KR20220095884A - Air-conditioner - Google Patents

Abstract

An objective of the present invention is to provide an air conditioner capable of minimizing the amount of protrusion of a front door unit when forming forward-directed airflow. The present invention relates to an air conditioner having a front door unit that opens and closes a front discharge port while moving in a forward and backward direction, and capable of maintaining a minimum protrusion of the front door unit when forming forward airflow.

Description

Air conditioner {AIR-CONDITIONER}

The present invention relates to an air conditioner having a front door that opens and closes a front discharge port while moving in a forward and backward direction, and more particularly, relates to an air conditioner capable of keeping the amount of protrusion of the front door to a minimum when forming a forward directing airflow. .

In general, an air conditioner uses a refrigerant refrigeration cycle consisting of a compressor, a condenser, an expansion mechanism, and an evaporator to cool and purify air in order to create a more comfortable indoor environment for users.

The indoor unit of the air conditioner may be classified into a ceiling type, a wall-mounted type, and a stand type according to an installation location. In the stand-type indoor unit, the discharge port may be formed on the front or side surface of the cabinet, and the suction port may be formed on the rear surface of the cabinet.

Ceiling-type or wall-mounted indoor units, including stand-type indoor units, generally include means for changing the discharge direction or airflow direction of air discharged through the discharge port.

In this regard, in Korean Patent Application Laid-Open No. 10-2007-0109419 (hereinafter referred to as Prior Document 1), the front panel is moved in the front-rear direction of the indoor unit of the air conditioner to vary the flow path formed in the front discharge port. , a configuration for switching the airflow direction of the air discharged to the front discharge port is disclosed.

However, since the configuration disclosed in Prior Document 1 must include a driving means for moving the front panel in the front-rear direction and a support means for movably supporting the front panel in the front-rear direction to change the airflow direction, There is a problem in that the size increases, the number of parts and manufacturing cost increase.

In addition, the configuration disclosed in Prior Document 1 has a problem in that the effective cross-sectional area of the front discharge port is significantly reduced when the forward direction airflow is formed compared to when the side direction airflow is formed, thereby reducing the air volume and significantly increasing the noise.

In addition, in the configuration disclosed in Prior Document 1, since the front panel having a cross-sectional area corresponding to the cross-sectional area of the front discharge port or wider than that of the front discharge port is applied, the flow resistance to the air discharged when the forward direction air flow is generated is rapidly increased, As a result, there is a problem that the efficiency is highly likely to be rapidly reduced.

On the other hand, Korean Patent Application Laid-Open No. 10-2018-0055792 (hereinafter referred to as Prior Document 2) discloses a configuration in which the flow path formed in the front discharge port is varied by using a front panel moving in the front-rear direction similar to that of Prior Document 1 has been In the configuration disclosed in Prior Document 2, a sufficient flow rate can be secured because a larger opening amount can be secured at the front discharge port when a forward direction airflow is formed compared to Prior Document 1.

However, the configuration disclosed in Prior Document 2 has a structure in which the front panel excessively protrudes forward compared to Prior Document 1 when the forward direction airflow is formed.

Due to such an excessive amount of protrusion of the front panel, the support structure for supporting the front panel reciprocally is unstable, and since a material having higher rigidity must be used to support the front panel, the manufacturing cost is inevitably increased. There is a problem that there is no

In addition, due to the excessive amount of protrusion of the front panel, that is, the opening of the front discharge port is inevitably large, the internal structure of the indoor unit is excessively exposed through the front discharge port, which can create psychological and aesthetic anxiety for users. There is a problem.

Korean Patent Publication No. 10-2007-0109419 Korean Patent Publication No. 10-2018-0055792

The present invention has been devised to solve the problems of the prior art, and a first object of the present invention is to provide an air conditioner capable of maintaining a minimum amount of protrusion of a front door when a forward direction airflow is formed.

Another object of the present invention is to provide an air conditioner capable of minimizing flow resistance of discharged air by applying a front door having a cross-sectional area smaller than that of a front discharge port.

In addition, a third object of the present invention is to provide an air conditioner capable of increasing the amount of air blown by applying an all-broadcast wind fan having a size larger than that of the front door unit and blowing air over a long distance when a forward direction airflow is formed.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

The air conditioner according to the present invention includes a cabinet, a heat exchanger, a blowing fan, a discharge guide, and a front door, and an outer circumferential surface of the front door forming the discharge passage together with the discharge guide is parallel to the rotation axis. has a first inclined surface that gradually rises while proceeding forward along do. Through this, the amount of protrusion of the front door can be kept to a minimum.

In addition, the inner peripheral surface of the discharge guide, a second inclined surface gradually descending while proceeding forward in a direction parallel to the rotation axis; and a third inclined surface formed in front of the second inclined surface, gradually ascending while progressing forward in a direction parallel to the rotation axis, and extending to the front discharge port, wherein the front door part is moved to the forward position In this state, a length in the front-rear direction through which the first inclined surface protrudes from the front discharge port in a direction parallel to the rotation axis is smaller than or equal to a length in the front-rear direction of the third inclined surface in a direction parallel to the rotation axis.

In addition, a longitudinal length of the third inclined surface in a direction parallel to the rotation axis is smaller than a front-back direction length of the first inclined surface in a direction parallel to the rotation axis.

In addition, a longitudinal length of the third inclined surface in a direction parallel to the rotation axis is smaller than a front-back direction length of the second inclined surface in a direction parallel to the rotation axis.

In addition, the first inclined surface forms a direction parallel to the rotation axis and a first inclination angle, the third inclined surface forms a direction parallel to the rotation axis and a third inclination angle, and the third inclination angle is greater than the first inclination angle becomes small

In addition, the second inclined surface forms a second inclination angle with a direction parallel to the rotation axis, and the second inclination angle is greater than the third inclination angle.

In addition, between the second inclined surface and the third inclined surface, a passage neck portion serving as the shortest distance from the rotation axis among the inner peripheral surfaces of the discharge guide is formed, and in a state in which the front door portion is moved to the frontmost position, the front view A minimum cross-sectional area among the cross-sectional areas of the discharge passage formed between the outer peripheral surface of the fisherman and the third inclined surface is less than or equal to the cross-sectional area of the discharge passage formed between the outer peripheral surface of the front door and the flow passage neck.

In addition, the minimum cross-sectional area is 70% or more and 100% or less of a cross-sectional area of the discharge passage formed between the outer peripheral surface of the front door and the passage neck.

In addition, the first inclined surface extends to a front end of the front door, a maximum radius of the front door is formed at the front end having a disk shape, and the maximum radius of the front door is that of the blowing fan. smaller than the maximum radius.

In addition, the maximum radius of the front door portion is smaller than the maximum radius of the front discharge port, which is a circular opening.

In addition, the blowing fan includes at least one blade extending in an oblique direction with respect to the rotation axis, and the maximum radius of the blowing fan is a linear distance from the rotation axis to an outer end of the blade.

In addition, when the front door part is moved to the rearmost position, the front door part is entirely accommodated in the discharge guide.

In addition, the first inclined surface extends to the front end of the front door,

When the front door part is moved to the rearmost position, the front end part of the front door part is positioned in the area of the third inclined surface in a direction parallel to the rotation axis.

In addition, the maximum radius of the front door is formed at the front end having a disk shape, and the maximum radius of the front door is greater than the linear distance from the rotation axis to the flow passage neck.

In addition, the front door unit may be stopped at an intermediate position between the frontmost position and the rearmost position, and when the front door unit is moved to the intermediate position, the front door unit may have been moved to the frontmost position. The air flow direction is changed to a different direction from the air flow direction that was discharged.

In addition, the intermediate position is formed between the front discharge port and the flow passage neck in a direction parallel to the rotation axis.

Also, in the intermediate position, the front end of the front door is the same as the front discharge port in a direction parallel to the rotation axis.

In addition, when the front door unit is stopped at the intermediate position, the cross-sectional area of the discharge passage formed between the first inclined surface and the third inclined surface is gradually decreased while proceeding forward in a direction parallel to the rotation axis.

In addition, the discharge guide includes at least one vane formed to protrude from the second inclined surface toward the discharge passage, and the at least one vane is located on the rotation axis from the rear end of the second inclined surface to the front end. extended in parallel directions.

In addition, the distance between the inner end of the at least one vane and the rotation axis is kept constant while proceeding in a direction parallel to the rotation axis.

In addition, the distance between the inner end of the at least one vane and the rotation axis is greater than or equal to the interval between the front end of the second inclined surface and the rotation axis.

The air conditioner according to the present invention can reduce the size of the front door itself and the size of the components supporting the front door by keeping the amount of protrusion of the front door to a minimum, and thus the manufacturing cost can be reduced. have an effect

In addition, the air conditioner according to the present invention has the effect of forming a psychological and aesthetic stability for the user by keeping the amount of protrusion of the front door to a minimum and thus the exposure of the internal structure to a minimum.

In addition, the air conditioner according to the present invention has the effect of increasing efficiency by minimizing flow resistance by applying a front door having a smaller cross-sectional area than that of the front discharge port, and allowing air to be blown to a more remote area.

In addition, the air conditioner according to the present invention can reduce the protrusion amount and size of the front door, so it is possible to sufficiently secure the discharge capacity by applying a blower fan having a larger blowing capacity, and it is possible to smoothly blow air to a remote area has the effect of

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a front perspective view of an indoor unit according to an embodiment of the present invention.
2 is a rear perspective view of an indoor unit according to an embodiment of the present invention.
3 is an exploded perspective view of the indoor unit shown in FIG. 1 .
4 is a front perspective view showing a state in which the front door part is moved to the rearmost position as the all-broadcast wind module shown in FIG. 3 .
FIG. 5 is a cross-sectional view of FIG. 4 .
6 is an exploded perspective view of FIG. 4 .
7 is a front perspective view showing a state in which the front door part is moved to the most forward position as the all-broadcast wind module shown in FIG. 3 .
FIG. 8 is a cross-sectional view of FIG. 7 .
9 is a perspective view showing a state in which the push ring and the planetary gear device are coupled according to an embodiment of the present invention.
10 is a side view of the push ring shown in FIG.
11 is a front perspective view of a front door driving unit according to an embodiment of the present invention.
12 is a rear perspective view of a front door driving unit according to an embodiment of the present invention.
13 is a perspective view in which a carrier housing is added in FIG. 11 .
14 is a perspective view illustrating a state in which a push ring and a moving cylinder are combined according to an embodiment of the present invention.
15 is a perspective view illustrating a state in which the moving cylinder is advanced with respect to the push ring in FIG. 14 .
16 is a front perspective view illustrating a state in which the first discharge guide and the second discharge guide are coupled according to an embodiment of the present invention.
17 is a front perspective view of the first discharge guide shown in FIG. 16 .
18 is a front perspective view of the second discharge guide shown in FIG. 16 .
19 is a rear side view of the second discharge guide shown in FIG. 16 .
20 is a cross-sectional view illustrating a state in which the front door is moved to the rearmost position according to an embodiment of the present invention.
21 and 22 are cross-sectional views illustrating a state in which the front door is moved to a mating position according to an embodiment of the present invention.
23 and 24 are cross-sectional views illustrating a state in which the front door is moved to the most forward position according to an embodiment of the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, it goes without saying that the first component may be the second component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when it is described that a component is “connected”, “coupled” or “connected” to another component, the components may be directly connected or connected to each other, but other components are “interposed” between each component. It should be understood that “or, each component may be “connected,” “coupled,” or “connected,” through another component.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Also, as used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Throughout the specification, when “A and/or B” is used, it means A, B or A and B, unless otherwise stated, and when “C to D” is used, it means that there is no specific opposite description. Unless otherwise specified, it means that it is greater than or equal to C and less than or equal to D.

Hereinafter, the present invention will be described with reference to the drawings for explaining the indoor unit 1 of an air conditioner according to embodiments of the present invention.

First, the entire assembly structure constituting the indoor unit 1 according to an embodiment of the present invention will be schematically described with reference to FIGS. 1 to 3 , and the structure of each assembly will be schematically described.

<Overall composition>

The indoor unit 1 of an air conditioner according to an embodiment of the present invention opens and closes the cabinet assembly (I) forming an outer body, the front discharge port formed on the front side of the cabinet assembly (I), and the side discharge port formed on both sides of the cabinet assembly (I), or A door assembly (II) for changing the direction, a blower fan assembly (III) disposed inside the cabinet assembly (I) to form an airflow, and a heat exchange assembly (III) for exchanging air flowing by the blower fan assembly (III) with a refrigerant Ⅳ), the filter assembly (VI) that filters the air flowing into the cabinet assembly (I), the filter cleaning assembly (VII) that removes foreign substances attached to the filter assembly (VI), and the outside of the cabinet assembly (I) It is configured to include a humidification assembly (V) for humidifying the air discharged to the.

<Cabinet Assembly>

The cabinet assembly (I) according to an embodiment of the present invention includes a rear upper cabinet 11 that forms a suction port 111 rearward, and a space in which a heat exchanger 41 is disposed, and a rear upper cabinet ( 11) disposed below the base portion 12 and forming a space in which a part of the humidification assembly V is disposed, and a rear lower cabinet 13 covering the rear and sides of the base portion 12, and the rear It may include a front cabinet 14 disposed on the open front of the upper cabinet 11 and the rear lower cabinet (13).

The rear upper cabinet 11 is formed to have a U-shape with an open front and an upper surface as a whole, and is disposed above the rear lower cabinet 13 and the base part 12 . A front cabinet 14 to be described later is disposed on the opened front surface, and a top cover 15 is disposed on the opened upper surface.

The rear upper cabinet 11 may form a space in which the heat exchanger 41, the front wind module 31, and the side broadcast wind modules 32a, 32b, and 32c are disposed therein. As means for supporting these structures, a heat exchanger mounting member (not shown) on which the heat exchanger 41 is mounted inside the rear upper cabinet 11, and an all-broadcast wind module mounting member on which the all-broadcast wind module 31 is mounted (not shown) and a side broadcast wind module mounting member (not shown) to which the side broadcast wind modules 32a, 32b, and 32c are mounted may be respectively disposed.

A suction port 111 is formed at the rear of the rear upper cabinet 11 , and a filter assembly VI may be disposed at the suction port 111 side. The filter assembly (VI) may include a plurality of filter modules (62a, 62b, 62c, 62d) disposed left and right behind the rear upper cabinet (11).

In addition, between the plurality of filter modules 62a, 62b, 62c, 62d disposed left and right at the rear of the rear upper cabinet 11, a rail type for guiding the vertical (U-D direction) movement of the filter cleaner 72 is provided. A movement guide 71 is disposed.

The movement guide 71 protrudes from the center of the plurality of filter modules 62a, 62b, 62c, 62d disposed left and right at the rear of the rear upper cabinet 11 and extends in the vertical direction (U-D direction) can be placed in this way.

Meanwhile, at the rear of the rear upper cabinet 11 , an ionization unit (not shown) may be additionally disposed at a portion where the rail-shaped movement guide 71 is mounted. The ionizer serves to ionize the air flowing to the suction port 111 through a discharge by receiving a high voltage.

In addition, a refrigerant pipe hole 132 through which the refrigerant pipe 42 of the heat exchange assembly IV passes may be formed in the rear lower surface of the rear lower cabinet 13 . Furthermore, a power line hole 1312 through which a power line supplying power from an external power source passes may be formed in the rear lower surface of the rear lower cabinet 13 .

On the other hand, the base part 12 is disposed below the rear upper cabinet 11, and forms a space in which the water tank 51 and the heating part (not shown), which are components of the humidification assembly V, are disposed. In addition, a power supply (not shown) in which a power line connected to the filter cleaning assembly VII is wound may be disposed inside the base 12 .

As shown in FIG. 3 , the base part 12 may have a box shape with an open front. A portion of the rear lower cabinet 13 and the side door unit 22 of the door assembly II may be disposed on the outer periphery of the base 12 .

In addition, in the base part 12, a power line through hole (not shown) through which a power line connected to the filter cleaning assembly (VII) passes, and a humidification passage pipe (not shown) of the humidification assembly (V) penetrates through and extends. A humidification passage tube through hole (not shown) may be formed.

In addition, the rear upper cabinet 11 may be mounted on the upper side of the base part 12 , and a separate support member for supporting other structures including the rear upper cabinet 11 may be additionally mounted.

In a state in which the vertical base unit 12 and the rear upper cabinet 11 are coupled to each other, the front cabinet 14 is disposed on the front surfaces of the base unit 12 and the rear upper cabinet 11 .

The front cabinet 14 forms the front surface of the indoor unit 1, and as shown in the figure, at a position corresponding to the front air module 31 as an upper position, the air that has been heat-exchanged by the heat exchange assembly (IV) is transferred to the front air module ( 31) is accelerated by the front discharge port 141 to be discharged is formed.

In addition, a camera sensor 142 for detecting conditions of an indoor space may be installed in the front cabinet 14 . As illustrated by way of example, the camera sensor 142 may be installed at the top of the front cabinet 14 .

Here, the condition of the indoor space may include the size of the indoor space, the number of occupants in the indoor space, and the location of the occupants.

<Door assembly>

The door assembly (II) includes a front door module 21 that opens and closes a front outlet 141 formed in the front cabinet 14 and switches the direction of an airflow discharged through the front outlet 141, and is formed on both sides, respectively. It includes a side door module 22 for opening and closing the side outlets 224a and 224b, and a hidden vane module 23 for changing the direction of the airflow discharged through the side outlets 224a and 224b.

The front door module 21 is provided to reciprocate in the front-rear direction between the rearmost position for closing the flow path of the air discharged through the front discharge port 141 and the frontmost position for forming the forward-direction airflow.

The operation mode in which the forward direction airflow is generated in a state in which the front door module 21 protrudes to the forward position may be defined as a direct wind operation mode in order to distinguish it from an indirect wind operation mode to be described later.

Furthermore, the front door module 21 may be stopped at a mating position corresponding to an intermediate point between the rearmost position and the forwardmost position. The mating position corresponds to a position where the outer panel 211 disposed on the most front side of the front door module 21 is substantially horizontal with the front surface of the front cabinet 14 .

When the front door module 21 is stopped at the mating position, the air discharged to the front discharge port 141 by the shape of the outer surface of the front door module 21 is radially outward from the front discharge port 141 rather than the front. It creates an exhaust side directional airflow. Such an operation mode may be defined as an indirect wind operation mode.

On the other hand, the outer panel 211 disposed on the most front side of the door module 21 is formed of a translucent material, and the light generated by the display unit (not shown) provided on the inside passes through the outer panel 211 to the outside. can be investigated with Accordingly, the outer panel 211 according to an embodiment of the present invention functions as a display that provides the user with information about the operating state of the indoor unit 1 and the air quality condition around the indoor unit 1 to the user.

The side door module 22 serves to open and close the side discharge ports 224a and 224b formed on both sides of the cabinet assembly I.

That is, in the side door module 22, the side broadcast wind modules 32a, 32b, and 32c are installed in the same way that the indoor unit 1 is completely stopped and only the front air wind module 31 of the indoor unit 1 is operated. It serves to close the side discharge ports 224a and 224b in a non-operational state.

In this way, the side air outlets 224a and 224b are closed through the side door module 22 in a state in which the side broadcast wind modules 32a, 32b, and 32c do not operate, so that fine dust, etc. It can be effectively blocked from the inflow of foreign substances, etc., which are introduced and adhered to the inside, or foreign substances that may cause malfunction.

The side door module 22 is. A pair of side doors 221a and 221b that open and close the side discharge ports 224a and 224b while moving in the front-rear direction (F-R direction), and a side door driving unit 222a that generates driving force in each of the side doors 221a and 221b , 222b) and a pair of support frames 223a and 223b for supporting each of the side doors 221a and 221b and the side door driving units 222a and 222b.

The side doors 221a and 221b are movably supported from a frontmost position in which the side discharge ports 224a and 224b are completely closed to a rearmost position in which the side discharge ports 224a and 224b are fully opened. As shown in FIGS. 1 to 3 , the side doors 221a and 221b are connected to the cabinet assembly (I) to form an aesthetic sense for the user and form a sense of unity with the front cabinet 14 and the rear upper cabinet 11. is extended to cover the whole with a predetermined width from the top to the bottom of the can be

For movable support of the side doors (221a, 221b), one end is attached to the side door (221a, 221b) and the other end is supported by the support frames (223a, 223b) to be movable and slidably supported by a guide connector (not shown). More may be provided.

Exemplarily, the side door driving units 222a and 222b may use a gear motor to drive the side doors 221a and 221b in an electric manner, a pinion gear connected to an output shaft of the gear motor, and a rotational force of the pinion gear to linearly reciprocate. It may be configured to include a rack gear that converts to .

The gear motor is firmly fixed to the support frames 223a and 223b corresponding to the fixing members, and the rack gear engaged with the pinion gear may be firmly fixed to the inner surface of the side doors 221a and 221b.

Meanwhile, as described above, the side doors 221a and 221b are provided to extend from the upper end to the lower end of the cabinet assembly I. Therefore, since the height is very large compared to the width of the side doors 221a and 221b, it is difficult to effectively drive the individual side doors 221a and 221b with only a single driving unit.

Accordingly, two side door driving units 222a and 222b are provided for each of the individual side doors 221a and 221b, respectively, and as shown, they are respectively disposed at positions adjacent to the upper and lower ends of the individual side doors 221a and 221b. it is preferable

The support frames 223a and 223b rotatably support the side doors 221a and 221b and form a part of both sides of the cabinet assembly I together with the rear upper cabinet 11 and the rear lower cabinet 13 . In more detail, the support frames 223a and 223b may be disposed between the rear upper cabinet 11 and the front cabinet 14 .

In addition, side discharge ports 224a and 224b extending in the vertical direction (U-D direction) are formed in the support frames 223a and 223b.

As shown, a plurality of side vanes 225a and 225b for guiding the direction of the discharged air may be disposed in the side discharge ports 224a and 224b.

The plurality of side vanes 225a and 225b may be integrally formed with the support frames 223a and 223b. The plurality of side vanes 225a and 225b according to an embodiment of the present invention may be disposed and fixed to be inclined toward the front, thereby guiding the air discharged to the outside of the cabinet in the forward direction. Accordingly, the air discharged through the side outlets 224a and 224b in a state in which the hidden vane module 23 does not act forms a forward direction airflow by the plurality of side vanes 225a and 225b. Here, the forward direction airflow may be defined as a discharge airflow having an effective discharge angle of about 25 degrees with respect to the forward direction (F-direction).

Meanwhile, vanes performing the same function as the side vanes 225a and 225b provided in the support frames 223a and 223b may be configured to be formed on members other than the support frames 223a and 223b. Illustratively, it is also possible to configure the side vanes to be integrally formed on the side surfaces of the discharge guides 326 of the side broadcast wind modules 32a, 32b, and 32c to be described later.

Of course, as shown in FIG. 3 , it is also possible to configure the support frames 223a and 223b to be provided with side vanes 225a and 225b and the discharge guide 326 to be provided with the side vanes 3261 at the same time.

The hidden vane module 23 serves to convert the forward direction airflow discharged through the side outlets 224a and 224b into a side direction airflow.

As described above, the air discharged to the side outlets 224a and 224b generates a forward directed airflow by the side vanes 225a and 225b of the support frames 223a and 223b or the side vanes 3261 of the discharge guide 326. will form

The hidden vane module 23 serves as a vane for changing the direction of the forward direction airflow in this way. The direction change of the forward direction airflow is performed by plate-shaped hidden vanes 231a and 231b disposed adjacent to the front side of the side outlets 224a and 224b as shown in FIG. 3 .

In more detail, the hidden vanes 231a and 231b of the hidden vane module 23 are installed in the front cabinet 14 when the side broadcast wind modules 32a, 32b, and 32c are operating in the direct wind mode to form a forward direction airflow. A hidden state or a hidden state is maintained in the storage position on the rear side. Accordingly, the hidden vanes 231a and 231b do not affect the airflow of the air discharged through the side discharge ports 224a and 224b, and the discharged air maintains a forward-facing airflow.

However, when the hidden vane driving unit (not shown) is operated to switch from the direct wind mode to the indirect wind mode, the hidden vanes 231a and 231b are horizontally moved from the above-described storage position to the outside.

When the horizontal movement is started, the hidden vanes 231a and 231b are stopped after the movement to the final deployed position is completed.

When the movement of the hidden vanes 231a and 231b to the final deployment position is completed, the air discharged through the side outlets 224a and 224b is resisted by the hidden vanes 231a and 231b, and in particular, the side outlets 224a and 224b. The air passing through the front end side of 224b) directly collides with the hidden vanes 231a and 231b, and the direction of movement is changed.

At this time, since the flow velocity of the air passing through the front end side is the fastest among the air discharged through the side discharge ports 224a and 224b, the air whose movement direction is changed as it collides with the hidden vanes 231a and 231b is on the rear side It affects the direction of movement of the exhaust air. Due to this effect, the air passing through the side outlets 224a and 224b changes the overall movement direction to form a lateral direction airflow.

FIG. 3 shows an embodiment in which one left hidden vane 231a and one right hidden vane 231b are respectively provided to correspond to the left side discharge port 224a and the right side discharge port 224b. However, the present invention is not limited thereto, and it will be seen that a modified example in which the left hidden vane 231a and the right hidden vane 231b are respectively divided into a plurality are possible. For convenience, the following description will be based on an embodiment in which one 231a, 231b is provided on the left and right sides, and a detailed configuration of the hidden vanes 231a and 231b will be described later with reference to FIG. 4 or less.

The hidden vane driving unit (not shown) uses a gear motor to drive the hidden vanes 231a and 231b in an electric way, a pinion gear (not shown) connected to the output shaft of the gear motor, and the rotational force of the pinion gear as a linear reciprocating motion. It may be configured to include a rack gear (not shown) that converts.

The gear motor is configured to be firmly supported by a separate bracket (not shown), and the rack gear engaged with the pinion gear is integrally formed with the hidden vanes 231a and 231b or is formed separately to the hidden vanes 231a and 231b. can be attached to As will be described later, a plurality of fastening holes 231h may be formed in the hidden vanes 231a and 231b so that the rack gear can be attached using fastening means such as bolts.

<Blowing fan assembly>

The blower fan assembly (III) includes a front air module 31 for discharging air to the front air outlet 141 of the indoor unit 1, and a side air blower for discharging air to side air outlets 224a and 224b on both sides of the indoor unit 1 modules 32a, 32b, 32c.

The blower fan assembly (III) according to an embodiment of the present invention may include, for example, one front broadcast wind module 31 and three side broadcast wind modules 32a, 32b, and 32c. The front wind module 31 and the side wind modules 32a, 32b, and 32c are disposed in front of the heat exchange assembly IV.

The all-broadcast wind module 31 is disposed on the upper side of the side-broadcast wind modules 32a, 32b, and 32c. The all-broadcast wind module 31 discharges air to the front outlet 141 formed in the front cabinet 14 .

The all-broadcast wind module 31 may include an all-broadcast wind fan 311 , an all-broadcast wind motor 312 , and an all-broadcast wind fan housing 313 . In the all-broadcast wind module 31 according to an embodiment of the present invention, the air discharged through the selection of the structural shape of the all-broadcast wind housing 313 and the aforementioned front door module 21 and the position of the front door module 21 is It may be operated in a direct wind mode discharged to a distance in the front or in an indirect wind mode in which air is discharged radially outward from the front outlet 141 .

The side broadcast wind module (32a, 32b, 32c) is disposed below the front wind module (31). A plurality of side broadcast wind modules 32a, 32b, and 32c according to an embodiment of the present invention may be disposed vertically. Each of the side broadcast wind modules 32a, 32b, and 32c may discharge the discharged air through the side air outlets 224a and 224b.

Each side broadcast wind module (32a, 32b, 32c) is a side broadcast wind fan (321a, 321b, 321c), a side broadcast wind motor (322a, 322b, 322c), a side broadcast wind fan housing (323a, 323b, 323c), a suction guide ( 325a, 325b, and 325c), and discharge guides 326a, 326b, and 326c.

The side broadcast wind modules (32a, 32b, 32c) are disposed in front of the heat exchanger (41), suck the heat-exchanged air through the side suction guides (325a, 325b, 325c), and the discharge guides (326a, 326b, 326c) It can be discharged through the side discharge ports (224a, 224b).

The air flowing by the side broadcast wind module (32a, 32b, 32c) is the direction of the discharge air flow by the side vanes (225a, 225b) of the side outlets (224a, 224b) or the side vanes of the discharge guides (326a, 326b, 326c) This can be determined. As described above, the airflow determined by the side vanes 225a and 225b of the side outlets 224a and 224b or the side vane 3261 of the discharge guide 326 is preset as the forward direction airflow.

<Heat Exchange Assembly>

The heat exchange assembly IV serves to heat exchange the indoor air sucked into the rear upper cabinet 11 with the refrigerant.

The heat exchange assembly (IV) may include a heat exchanger (41) through which a refrigerant exchanging heat with indoor air flows, and a refrigerant pipe (not shown) forming a refrigerant flow path such that the refrigerant flows into or out of the heat exchanger (41). have.

The refrigerant pipe may include a refrigerant inlet pipe 42 through which the refrigerant flowing into the heat exchanger 41 flows, and a refrigerant outlet pipe (not shown) through which the refrigerant discharged from the heat exchanger 41 flows.

The heat exchanger 41 is disposed at the rear of the blower fan assembly III. The heat exchanger 41 may be disposed between the intake port 111 and the discharge ports 22 and 141 to exchange heat with air flowing through the indoor unit 1 . In addition, the heat exchanger 41 is disposed between the filter assembly (VI) and the blower fan assembly (III).

As shown in FIG. 3 , the heat exchanger 41 may have a length corresponding to the height at which the plurality of side broadcast wind modules 32a , 32b , 32c and the front broadcast wind module 31 are vertically disposed.

The heat exchanger 41 may be disposed inside the rear upper cabinet 11 . The heat exchanger 41 may be supported by being fastened to a heat exchanger coupling part (not shown) formed inside the rear upper cabinet 11 .

<Humidification Assembly>

The humidification assembly V may discharge humidified air to the outside of the indoor unit 1 . The humidification assembly (V) includes a water tank 51 for storing water, a heating unit (not shown) for receiving and heating water from the water tank 51, and a humidification discharge port (not shown) for discharging heated humidified air. It may include a humidification flow pipe (not shown) for guiding the humidified air heated by the nozzle (not shown) to the humidifying discharge nozzle).

<Filter assembly>

The filter assembly VI serves to remove foreign substances contained in the air introduced into the suction port 111 .

The filter assembly (VI) is movably disposed at the rear of the rear upper cabinet (11). The filter assembly VI may be disposed at the intake port 111 formed at the rear of the rear upper cabinet 11 to filter indoor air flowing into the intake port 111 . The filter assembly (VI) is movably disposed in the rear upper cabinet (11).

Referring to FIG. 2 , the filter assembly VI according to an embodiment of the present invention includes filter modules 62a , 62b , 62c , and 62d for removing foreign substances in the air sucked into the suction port 111 . In the filter assembly (VI), the filter modules (62a, 62b, 62c, 62d) may be disposed in the intake port 111 or may be disposed outside the lateral surface of the rear upper cabinet (11).

The filter assembly (VI) according to an embodiment of the present invention is equipped with a filter in which the filter modules 62a, 62b, 62c, 62d, and the filter modules 62a, 62b, 62c, 62d for removing foreign substances in flowing air are mounted. It includes a member (not shown) and a moving member (not shown) for changing the position of the filter mounting member.

The filter modules 62a, 62b, 62c, and 62d may have a structure in which the filter module is drawn into or drawn out from the filter mounting member in the width direction of the filter module formed on the left and right when the filter module is disposed at the suction port.

The filter modules 62a, 62b, 62c, and 62d according to an embodiment of the present invention include the first filter modules 62a and 62b covering the left side of the inlet 111 of the rear upper cabinet 11, and the rear upper cabinet It may include second filter modules 62c and 62d that cover the right side of the suction port 111 of (11).

The first filter modules 62a and 62b may be disposed to cover the left side of the suction port 111 , or may be disposed to the left side of the left side of the rear upper cabinet 11 . The second filter modules 62c and 62d may be disposed to cover the right side of the suction port 111 , or may be disposed to the right side of the right side of the rear upper cabinet 11 .

When both the first filter modules 62a and 62b and the second filter modules 62c and 62d are disposed in the suction port 111, the filter cleaner 72 forms a movable surface.

The filter modules 62a, 62b, 62c, and 62d are detachably disposed on the filter mounting member. The filter modules 62a, 62b, 62c, and 62d may filter foreign substances in the air introduced into the suction port 111 .

The filter modules 62a, 62b, 62c, and 62d according to an embodiment of the present invention include a pre-filter 621 through which large dust in the air introduced into the inlet 111 is filtered, and air particles ionized by an ionization unit to collect the air. It may include a dust collecting filter unit (not shown) for filtering, and a deodorizing filter unit (not shown) for removing odors in the air.

The filter modules 62a , 62b , 62c , and 62d according to an embodiment of the present invention may further include a filter case 622 mounted to the filter mounting member and the pre-filter 621 is mounted thereto. A plurality of suction holes are formed in the filter case 622 in a direction in which the pre-filter 621 is mounted. The filter case 622 may include a vertical rib 6221 and a horizontal rib 6222 on the surface on which the pre-filter 621 is mounted.

The vertical ribs 6221 and the horizontal ribs 6222 form a lattice shape with each other, and the rigidity of the filter case 622 can be reinforced. The pre-filter 621 is formed in a mesh shape, and can filter out large-sized foreign substances in the air flowing into the filter modules 62a, 62b, 62c, and 62d.

The lower end 60a of the filter assembly VI may be disposed above the rear lower cabinet 13 . When the lower end 60a of the filter assembly (VI) is disposed at the lowermost end of the movement range in which the filter cleaner 72 of the filter cleaning assembly (VII) to be described below can move along the movement guide 71, the filter cleaner (72) is disposed above the upper end.

<Filter cleaning assembly>

The filter cleaning assembly (VII) moves up and down along the rear surface of the filter assembly (VI), and can remove foreign substances from the outside of the filter assembly (VI). The filter cleaning assembly VII removes foreign substances caught in the pre-filter 621 of the filter modules 62a, 62b, 62c, and 62d.

The filter cleaning assembly (VII) moves in the vertical direction (U-D direction) from the rear of the filter assembly (VI), and guides the movement of the filter cleaner 72 and filter cleaner 72 to remove foreign substances caught in the filter assembly (VI). It may be configured to include a power supply unit 73 for supplying power to the movement guider 71, and the filter cleaner 72.

<Detailed composition of front door module and front wind module>

Hereinafter, detailed configurations of the front door module 21 and the front wind module 31 will be described with reference to FIGS. 4 to 19 .

4 is a perspective view showing the front door module 21 and the front wind module 31 according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of FIG. 4 . 6 is an exploded perspective view of FIG. 5 . 4 and 5 show a state in which the front discharge port 141 is closed.

The front door module 21 is provided on the front side of the front cabinet 14 and performs a function of opening and closing the front discharge port 141 formed at the front end of the third discharge guide 317 to be described later or changing the direction of the air flow. .

The front wind module 31 is coupled to the front door module 21 , is disposed inside the cabinet assembly I, and performs a function of discharging air through the front outlet 141 .

The module case 41 is equipped with the front door module 21 and the front wind module 31, and serves to accommodate and support a part of the components constituting the front door module 21 and the front wind module 31. . The module case 41 may be provided in a shape suitable for mounting each component constituting the front door module 21 and the front wind module 31 .

As shown in FIG. 6 , the front door module 21 includes a front door part 21a and a front door driving part 21b.

The front door driving unit 21b for moving the front door unit 21a in the front-rear direction includes a push ring 214 , a moving cylinder 215 , a first motor 216 , a planetary gear device 217 , and a support plate 218 . , and a carrier housing 2191 may be included.

Referring to FIG. 9 , the push ring 214 may rotate by receiving a driving force from the first motor 216 . The push ring 214 is coupled to the moving cylinder 215 , and as the push ring 214 rotates, the moving cylinder 215 may move along a straight path in the front-rear direction of the indoor unit 1 .

The push ring 214 is formed in a ring shape as a whole, and the moving cylinder 215 is mounted on the outer periphery of the push ring 214 to move in the front-rear direction as the push ring 214 rotates. The push ring 214 is mounted on the support plate 218 and rotates, but may be provided so as not to move in the front-rear direction.

The moving cylinder 215 may be mounted on the outer periphery of the push ring 214 and coupled to the push ring 214 to move forward and backward according to the rotation of the push ring 214 .

A moving air guide 2192 is coupled to the front portion of the moving cylinder 215 . The moving air guide 2192 moves forward and backward together with the movement of the moving cylinder 215, and opens and closes the front discharge port 141, as shown in FIGS. 5 and 8, and the opening of the front discharge port 141 (Opening rate) can be adjusted and the direction of the discharge air flow can be changed.

In more detail, the moving air guide 2192 moves forward and backward between the most forward position (Pf), which is the most forward position, and the rearmost position (Pr), which is the most rearward position, based on a direction parallel to the rotation axis (X-X) direction. It is supported by the moving cylinder 215 to be movable in a straight line.

When the moving air guide 2192 reaches the frontmost position (Pf) or the rearmost position (Pr), the temporarily stopped state is maintained. The forward position (Pf) is a function position where the discharge air flow (Fo) of the air discharged to the front discharge port 141 generates a forward direction air flow, and the forward position (Pf) is the moving air guide 2192, the discharge flow path Fin ) is the functional location to block.

On the other hand, the moving air guide 2192 may be maintained in a stationary state at an intermediate position between the frontmost position (Pf) and the rearmost position (Pr). The intermediate position at which the stationary state is maintained in the present embodiment may be defined as the mating position Pm at which the outer panel disposed at the front of the front door forms the same plane as the front cabinet. The mating position Pm is a functional position in which the discharge air flow Fo of the air discharged to the front discharge port 141 forms a lateral direction air flow having a direction away from the rotation axis X-X direction. Specific details will be described later with reference to FIG. 20 or less.

Meanwhile, the first motor 216 may receive power from a power source to provide a driving force to the push ring 214 . The rotation and stop operations of the first motor 216 may be controlled by a controller (not shown) provided in the indoor unit 1 . The first motor 216 may be stably mounted on the support plate 218 .

The planetary gear device 217 may be coupled to the output shaft of the first motor 216 , and may reduce the driving force of the first motor 216 and transmit it to the push ring 214 . At this time, the planetary gear device 217 may receive a driving force from the output shaft of the first motor 216 , and may output a driving force from the push ring 214 .

The support plate 218 is coupled to the push ring 214 , and the first motor 216 and the planetary gear device 217 may be accommodated therein. The first motor 216 may be mounted on the support plate 218 and transmit a driving force to the planetary gear device 217 through a rotation shaft.

The carrier housing 2191 may be equipped with a push ring 214 , a moving cylinder 215 , and a support plate 218 . The carrier housing 2191 itself maintains a stationary state without rotation or movement in the forward and backward directions.

At this time, the push ring 214 mounted on the carrier housing 2191 may rotate relative to the carrier housing 2191 as the first motor 216 rotates. In addition, the moving cylinder 215 mounted on the carrier housing 2191 may move linearly in the front-rear direction with respect to the carrier housing 2191 as the first motor 216 rotates.

The moving air guide 2192 may be coupled to the front side of the moving cylinder 215 . The moving air guide 2192 is mounted on the moving cylinder 215 and can move in the front-rear direction with respect to the carrier housing 2191 as the moving cylinder 215 moves in the front-rear direction.

Of course, the display lighting unit 210 to be described later may also be coupled to the front portion of the moving cylinder 215 to move in the front and rear directions together with the moving cylinder 215 . That is, the moving cylinder 215 , the moving air guide 2192 , and the display lighting unit 210 together constitute the front door unit 21a moving in the front-rear direction.

The display lighting unit 210 may include an inner panel 213 , a printed circuit board 212 , and an outer panel 211 .

The inner panel 213 may be coupled to the moving cylinder 215 to move linearly in the front-rear direction together with the moving cylinder 215 . The printed circuit board 212 is accommodated in the inner panel 213 , and may include circuits for electrical operation, various active elements and passive elements.

The outer panel 211 may be coupled to the inner panel 213 , may be disposed in front of the inner panel 213 , may be electrically connected to the printed circuit board 212 , and may include a display unit 211a.

All or part of the front surface of the outer panel 211 may be provided as the display unit 211a. Characters, figures, etc. indicating the operating state of the air conditioner may be displayed on the display unit 211a. Meanwhile, an input unit (not shown) through which a user inputs a command for controlling the operation of the air conditioner may be provided on the front surface of the outer panel 211 .

The all-broadcast wind module 31 includes an all-broadcast wind fan 311, a fan housing 313, a first discharge guide 315, an all-broadcast wind motor 312, a second discharge guide 316, and a third discharge guide 317. may include

The all-broadcast wind fan 311 receives a driving force from the all-broadcast wind motor 312 and rotates to force air to flow to the front outlet 141 . Since the front outlet 141 is provided in a circular opening shape, it is appropriate that the blade 3112 of the front air blower fan 311 is provided to form a flow shape and flow path of air corresponding to the shape of the front outlet 141 . .

As shown in FIG. 5 , the all-broadcast fan 311 may include a fan hub 3111 , a shroud 3112 , and a plurality of blades 3113 . Preferably, it may be a four-flow fan that sucks air toward the rear center and discharges it radially outward.

At this time, the axis of rotation (X-X) of the front air fan 311 extends in a direction from the front cabinet 14 to the rear upper cabinet 11, preferably, the axis of rotation (X-X) is in the front-rear direction (F-R direction) is in the form of an extension of

The fan hub 3111 may be formed to have a shape that is gradually opened while proceeding toward the front toward the edge from the central portion of the all-broadcast wind fan 311 as a whole. One end of the plurality of blades 3113 is firmly fixed to the fan hub 3111 .

The shroud 3112 is spaced apart from the fan hub 3111 in the rotational axis direction, is disposed behind the fan hub 3111 , and forms a flow path of air together with the fan hub 3111 . The other ends of the plurality of blades 3113 are firmly fixed to the shroud 3112 .

The plurality of blades 3113 are respectively connected between the fan hub 3111 and the shroud 3112 . Each of the blades 3113 may be radially spaced apart from each other in the rotational direction. Each blade 3113 extends generally obliquely with respect to the axis of rotation X-X.

The blowing capacity of the all-broadcast fan 311 is determined through the size, that is, the radius size of the blade 3113 . The radius of the blade 3113 may be defined as a linear distance from the rotation axis X-X to the radially outer end of the blade 3113 .

On the other hand, as will be described later, the cross-sectional area of the discharge flow path Fin determined between the front door part 21a and the front discharge port 141 is kept relatively narrow compared to the related art. Therefore, in order to maintain an appropriate discharge capacity, as shown in FIG. 8 , the radius of the all-broadcast fan 311 of the indoor unit 1 according to the embodiment of the present invention, that is, the radius dF of the blade 3113 is the front It may be formed to be larger than the maximum radius dD of the door portion 21a.

As will be described later, the maximum radius dD of the front door portion 21a is formed at the front end of the front door portion 21a.

On the other hand, the fan housing 313 may accommodate the front air fan 311 and guide the flow of air so that the air discharged from the front air fan 311 is directed to the front outlet 141 . For such a flow guide, the inner peripheral surface of the fan housing 313 has a curved shape concave toward the rear.

The first discharge guide 315 is disposed in front of the front air fan 311, and can change the flow direction of the air discharged from the front air fan 311.

The second discharge guide 316 may be disposed in front of the first discharge guide 315 , and guide the flow of air introduced from the first discharge guide 315 toward the front discharge port 141 . That is, the first discharge guide 315 and the second discharge guide 316 form a discharge flow path of the air discharged from the all-broadcast wind fan 311 and, at the same time, direct the rotational speed component included in the air flow toward the front. It serves to transform into components. To this end, the first discharge guide 315 and the second discharge guide 316 are provided with a first vane 3153 and a second vane 3162 for changing or guiding the direction of the air flow, respectively.

Detailed configurations of the first discharge guide 315 and the second discharge guide 316 will be described later with reference to FIGS. 16 to 19 .

The all-broadcast wind motor 312 is disposed in the central portion of the first discharge guide 315, and the output shaft passes through the central portion of the first discharge guide 315 and can be coupled to the fan hub 3111 of the all-broadcast wind fan 311. have. The all-broadcast wind motor 312 receives electric power from a power source and operates to generate a driving force to rotate the all-broadcast wind fan 311 .

In order to fix the all-broadcast wind motor 312 to the first discharge guide 315, the all-broadcast wind motor 312 is fixed to the center of the first discharge guide 315 and coupled to the front inner wall of the first discharge guide 315. A motor bracket 312a may be coupled to the first discharge guide 315 .

The third discharge guide 317 may be disposed in front of the second discharge guide 316 , and may form a discharge flow path Fin formed at the rear of the front discharge port 141 together with the moving air guide 2192 .

The discharge flow path Fin having a ring shape is formed to have a variable cross-sectional area along the flow direction.

The third discharge guide 317 together with the second discharge guide 316 forms an outer boundary surface of the discharge passage Fin, and the moving air guide 2192 forms an inner boundary surface of the discharge passage Fin. The discharge passage Fin may be provided in a ring shape as a whole by the third discharge guide 317 and the moving air guide 2192 .

A detailed configuration of the discharge flow path Fin will be described later with reference to FIGS. 20 to 24 .

Hereinafter, detailed configurations of the front door unit 21a and the front door driving unit 21b will be described with reference to FIGS. 7 to 15 .

As described above, the moving air guide 2192 of the front door part 21a may include a body part 2192a and an air guide part 2192b.

The body part 2192a may be coupled to the moving cylinder 215 of the front door driving part 21b and provided in a cylindrical shape. Accordingly, the body portion 2192a may move in the front-rear direction according to the movement of the moving cylinder 215 .

The air guide portion 2192b is integrally formed on the outer circumferential surface of the body portion 2192a and has a shape in which the outer surface is gradually expanded while proceeding toward the front. As will be described later, the outer peripheral surface of the air guide 2192b has a first inclined surface 21a1 that gradually rises while proceeding forward in a direction parallel to the rotation axis X-X.

At this time, the first inclined surface 21a1 includes a curved section 2492b-2 (refer to FIG. 20) in which a cross section cut by a plane passing through the rotation axis X-X is curved, and a straight section 2492b- in which the cross section is a straight line. 3, see FIG. 20).

The cross-sectional straight portion 2492b-3 (refer to FIG. 20 ) forms a first inclination angle θ1 with the direction parallel to the rotation axis X-X. The rising angle of the cross-sectional straight part 2492b-3 is constantly maintained at the first inclination angle θ1 while proceeding in a direction parallel to the rotation axis X-X.

At this time, the first inclination angle θ1 is set to have a range of 30° to 50°. This is because if an inclination angle exceeding 50° is set, the flow resistance increases rapidly and noise may increase at the same time.

In addition, inclined surfaces having a first inclination angle θ1 are formed on the outer peripheral surface of the outer panel 211 disposed in front of the moving air guide 2192 and the outer peripheral surface of the inner panel 213 .

In this embodiment, the outer peripheral surface of the air guide part 2192b, the outer peripheral surface of the outer panel 211, and the outer peripheral surface of the inner panel 213 form a continuous inclined surface. Unless otherwise limited, the outer peripheral surface of the air guide part 2192b, the outer peripheral surface of the outer panel 211, and the outer peripheral surface of the inner panel 213 together form the first inclined surface 21a1 of the front door defined as forming.

Meanwhile, the first inclined surface 21a1 includes a second inclined surface 3161a and a third inclined surface 3171 respectively formed on the inner peripheral surface of the second discharge guide 316 and the inner peripheral surface of the third discharge guide 317, as will be described later. Together, a discharge passage (Fin) is formed. Each of these inclined surfaces has a circular cross section perpendicular to the axis of rotation (X-X). Accordingly, the discharge flow path Fin formed by these inclined surfaces may be provided in a ring shape as a whole.

However, the shape of the discharge flow path Fin may be changed as the front door driving unit 21b is driven to move the front door unit 21a, that is, as the moving air guide 2192 moves.

As shown in FIG. 5 , when the moving cylinder 215 moves to the rearmost position Pr, the air guide unit 2192b also moves to the rearmost position Pr together with the moving cylinder 215 while the discharge flow path Fin ) is gradually narrowed, and eventually the discharge flow path Fin may be closed.

As shown in FIG. 8 , when the moving cylinder 215 moves to the forward position Pf, the air guide unit 2192b also moves to the forward position Pf together with the moving cylinder 215 to provide a discharge flow path Fin. may be variable. In a state in which the moving cylinder 215 is at the forwardmost position Pf, the width of the discharge flow path Fin becomes the maximum, and at this time, the opening degree of the front discharge port 141 may become the maximum. As will be described later, when the opening degree of the front discharge port 141 is maximized, a forward direction airflow may be generated.

The configuration related to the change in the shape of the discharge flow path and the change in the direction of the discharge air flow according to the position of the moving air guide 2192 will be described later with reference to FIGS. 21 to 24 .

As shown in FIG. 11 , the moving cylinder 215 may have a first coupling part 2153 protruding radially inward of the moving cylinder 215 and provided with a first through hole 2153a on the inner periphery may be formed. .

As shown in FIG. 6 , the inner panel 213 has a second coupling part protruding from the inner periphery in the radial direction of the inner panel 213 and having a second through hole 2131a corresponding to the first through hole 2153a. 2131 may be formed.

The first coupling part 2153 and the second coupling part 2131 may be provided in plurality, and in this case, the number of the first coupling part 2153 and the second coupling part 2131 may be the same. The inner panel 213 may be coupled to the moving cylinder 215 by fastening a coupling mechanism such as a bolt to the first through hole 2153a and the second through hole 2131a.

Accordingly, the inner panel 213 can move in the front-rear direction together with the moving cylinder 215 . At this time, it can move in the front-rear direction together with the moving air guide 2192 disposed between the inner panel 213 and the moving cylinder 215 .

Meanwhile, as shown in FIG. 13 , the planetary gear device 217 of the front door driving unit 21b may include a sun gear 2171 , a plurality of planetary gears 2172 , and a ring gear 2173 .

The sun gear 2171 may be coupled to a rotation shaft of the first motor 216 to rotate by receiving a driving force from the first motor 216 .

The planetary gear 2172 may be meshed with the outer periphery of the sun gear 2171 , orbit the sun gear 2171 , and may be provided in plurality.

The ring gear 2173 may be meshed with the outer periphery of the planetary gear 2172 , and may be disposed on the inner periphery of the push ring 214 . At this time, the ring gear 2173 may be manufactured integrally with the push ring 214 .

On the other hand, since the support plate 218 is equipped with a plurality of planetary gears 2172 , the support plate 218 may serve as a carrier for rotatably supporting the planetary gears 2172 .

Due to this structure, the rotational driving force of the first motor 216 may be decelerated by the planetary gear device 217 and transmitted to the ring gear 2173 and the push ring 214 .

12 is a perspective view of the front door driving unit 21b shown in FIG. 11 as viewed in the opposite direction by 180 degrees. 13 is a view in which the carrier housing 2191 is added in FIG. 11 .

As shown in FIG. 13 , the push ring 214 may include a guide boss 2141 formed to protrude from the outer circumferential surface. Correspondingly, the moving cylinder 215 may include a guide slit 2151 into which the guide boss 2141 is inserted, and a guide slit 2151 for guiding the forward and backward movement of the moving cylinder 215 according to the rotation of the push ring 214. .

The guide boss 2141 may be provided in plurality, and may be disposed on the outer periphery of the push ring 214 at regular intervals in the circumferential direction, respectively. A plurality of guide slits 2151 are provided in the same number as the guide boss 2141 , and each of the guide slits 2151 may be disposed at a position corresponding to the push ring 214 on the circumference of the moving cylinder 215 .

The guide boss 2141 is inserted into the guide slit 2151 to be guided by the guide slit 2151 to move. As the guide boss 2141 moves along the guide slit 2151 , the rotational motion of the push ring 214 may be converted into a forward and backward linear reciprocating motion of the moving cylinder 215 .

Referring to FIG. 10 , the guide slit 2151 is formed in a direction inclined with respect to the circumferential direction of the moving cylinder 215 , and one end 2151a is disposed adjacent to the front portion of the moving cylinder 215 and the other end portion 2151b may be formed adjacent to the rear portion of the moving cylinder 215 .

Due to this structure, when the push ring 214 rotates, the guide boss 2141 of the push ring 214 can rotate along the guide slit 2151 formed in the circumferential direction and the inclined direction of the moving cylinder 215 . .

At this time, since the push ring 214 rotates only and does not move in the front-rear direction, the moving cylinder 215 can relatively move back and forth in a direction parallel to the rotation axis (X-X). Accordingly, the moving air guide 2192 moving together with the moving cylinder 215 may move in the front-rear direction to adjust the opening degree of the front discharge port 141 .

The front-back direction spacing LL between the one end 2151a and the other end 2151b may coincide with the front-rear movement range of the moving cylinder 215 . Accordingly, when the guide boss 2141 moves from the end of one end 2151a of the guide slit 2151 to the end of the other end 2151b, the maximum moving distance in the front-rear direction of the moving cylinder 215 may be obtained. In addition, it can be confirmed that the front-back direction spacing LL between the one end 2151a and the other end 2151b has a size significantly smaller than the diameter of the moving cylinder 215 . That is, it is possible because the amount of movement in the front-rear direction of the front door part 21a can be maintained in a very small range than that of the prior art.

As the rotational direction of the first motor 216 is changed, the moving cylinder 215 may move forward and backward toward the front and perform a reciprocating linear motion.

In the illustrated embodiment, by coupling the rotating push ring 214 and the moving cylinder 215 moving linearly in the front and rear directions to each other, and coupling the moving air guide 2192 to the moving cylinder 215, the moving air guide By moving the 2192 in the front-rear direction, it is possible to efficiently open and close the discharge flow path Fin or to adjust the opening degree of the discharge flow path Fin.

Accordingly, by adjusting the opening degree of the discharge flow path Fin, the amount of discharged air and the airflow direction can be easily controlled. Specific details will be described later with reference to FIGS. 20 to 24 .

On the other hand, the guide slit 2151 may be provided between one end 2151a and the other end 2151b and a path changing portion 2151c extending in parallel with the circumferential direction of the moving cylinder 215 may be formed.

When the guide boss 2141 moves along the guide slit 2151 and is positioned at the path change unit 2151c, the forward and backward movement of the moving cylinder 215 may be stopped for a while.

The rotation speed and angle of the first motor 216 are controlled to control the forward and backward positions of the moving air guide 2192, but sometimes the rotation speed and rotation angle of the first motor 216 may not be controlled to the desired values. can Accordingly, when only the rotation speed and rotation angle of the first motor 216 are controlled, the forward and backward positions of the moving air guide 2192 may be arranged at different positions from those designed.

In this case, it is possible to effectively suppress a change in the position of the moving air guide 2192 from the designed one by providing the path change unit 2151c in the guide slit 2151 .

In the illustrated embodiment, when the guide boss 2141 is placed on the route change unit 2151c, the front-rear position of the moving air guide 2192 may coincide with the designed one. Therefore, when the guide boss 2141 is placed, a path change unit 2151c that matches the design of the front-rear direction position of the moving air guide 2192 is provided in the guide slit 2151, and the first motor 216 receives a control command It is possible to suppress the moving air guide 2192 from stopping at a position deviated from the designed position even in the case of a different operation.

Meanwhile, the length of the path change unit 2151c may be appropriately selected according to a design value. In addition, the same structure as that of the path change unit 2151c may be formed on one end 2151a and the other end 2151b of the guide slit 2151, and the effect is the same as described above.

Meanwhile, as shown in FIG. 14 , a guide groove 2191a in which the longitudinal direction is disposed in the front-rear direction may be formed in the carrier housing 2191 . The moving cylinder 215 may have a guide rail portion 2152 disposed in the longitudinal direction in the front-rear direction and coupled to the guide groove portion 2191a.

A plurality of guide groove portions 2191a may be provided, and each of the guide groove portions 2191a may be disposed at regular intervals in the circumferential direction of the carrier housing 2191 . A plurality of guide rail portions 2152 may be provided equal to the number of guide groove portions 2191a, and each of the guide rail portions 2152 may be provided at a position corresponding to the guide groove portion 2191a in the circumferential direction of the moving cylinder 215 .

The guide groove portion 2191a may include a guide body portion 2191a-1 and a recessed groove portion 2191a-2. The guide body portion 2191a - 1 may be formed to protrude from the inner periphery of the carrier housing 2191 . The recessed groove portion 2191a-2 is formed by partially recessing the guide body portion 2191a-1, and the guide rail portion 2152 may be mounted thereon.

The carrier housing 2191 is fixedly coupled to at least one of the fan housing 313 , the first discharge guide 315 , and the second discharge guide 316 , and neither rotates nor moves linearly in the front and rear directions. Accordingly, when the guide rail portion 2152 disposed in the front-rear direction of the moving cylinder 215 is coupled to the guide groove portion 2191a disposed in the front-rear direction of the carrier housing 2191, the moving cylinder 215 is the guide groove portion 2191a. ) and can be moved in the forward and backward directions, but cannot rotate like the push ring 214 .

Therefore, due to the coupling structure of the guide rail portion 2152 and the guide groove portion 2191a, the carrier housing 2191 suppresses the rotation of the moving cylinder 215, so even if the push ring 214 rotates, the moving cylinder 215 can only move linearly in the forward and backward directions without rotating.

<Detailed composition of discharge guide>

Hereinafter, detailed configurations of the discharge guides 315 , 316 , and 317 provided in the indoor unit 1 according to an embodiment of the present invention will be described with reference to FIGS. 16 to 20 .

As described above, the first discharge guide 315 is disposed in front of the all-broadcast wind fan 311, forms a discharge flow path (Fin) of air, and simultaneously moves the rotational speed component included in the flow toward the front. It serves to transform into components.

16 and 17 , the first discharge guide 315 includes an outer ring 3151 having a cylindrical shape. A ring-shaped air discharge passage (Fin) is formed inside the outer ring 3151 . The inner circumferential surface 3151a of the outer ring 3151 is maintained parallel to the rotation axis X-X of the all-broadcast wind fan 311 so that the cross-sectional area of the discharge passage Fin can be constantly maintained according to the flow direction of the air.

A dome-shaped motor accommodating part 3152 which is convexly formed toward the rear is formed inside the outer ring 3151 . The motor accommodating part 3152 is formed with a space in which the all-broadcast wind motor 312 is accommodated therein. In addition, a plurality of fastening bosses 3152a for supporting the all-broadcast wind motor 312 are integrally formed inside the motor accommodating part 3152 . As exemplarily shown, three fastening bosses 3152a may be provided at equal intervals along the circumferential direction in the motor accommodating part 3152 so as to support the all-broadcast wind motor 312 in three places.

In addition, a through hole 3152b concentric with the output shaft is formed in the center of the motor accommodating part 3152 so that the output shaft of the all-broadcast wind motor 312 can be extended therethrough.

Among the outer circumferential surfaces 3152a of the motor accommodating part 3152, the portion overlapping with the inner circumferential surface 3151a of the outer ring 3151 in at least the direction of the rotation axis (X-X) is, together with the inner circumferential surface 3151a of the outer ring 3151 described above. A ring-shaped discharge passage (Fin) is formed. Like the inner circumferential surface 3151a of the outer ring 3151, the outer circumferential surface 3151a of the motor accommodating part 3152 can be maintained so that the cross-sectional area of the discharge flow path Fin can be constantly maintained according to the flow direction of the air. The portion overlapping the inner circumferential surface 3151a may extend parallel to the rotation axis X-X of the all-broadcast wind fan 311 .

On the other hand, between the inner peripheral surface 3151a of the outer ring 3151 and the outer peripheral surface 3152a of the motor accommodating part 3152, a plurality of first vanes 3153 arranged at equal intervals along the circumferential direction are provided.

The outer end of each first vane 3153 is integrally connected to the inner peripheral surface 3151a of the outer ring 3151 and the inner end is integrally connected to the outer peripheral surface 3152a of the motor accommodating part 3152 .

Each of the first vanes 3153 serves to increase the straight-line speed component of the air flow by minimizing the rotational speed component included in the passing air flow. To this end, the first vane 3153 has an airfoil having a direction opposite to that of the blade 3113 of the all-broadcast wind fan 311 .

Since the air flow passing through the first vane 3153 can minimize the rotation speed component and increase the straight speed component, the air flow discharged to the front outlet 141 reaches a more remote area with the same power consumption as will be described later. be able to do

An extension portion 3153a protruding toward the second vane 3162 and having a width corresponding to the radial width of a second vane 3162 to be described later on the radially outer side as the front end side of the first vane 3153 may be provided.

On the other hand, a plurality of fastening portions 3154 are formed on the outer circumferential surface of the outer ring 3151 . The plurality of fastening parts 3154 includes a hook fastening part 3154b and a bolt fastening part 3154a. Some of the hook fastening parts 3154b have a purpose for fastening to the fan housing, and other parts have a use for fastening to a second discharge guide 316 to be described later. The second discharge guide 316 is provided with a hook fastening portion 3163b coupled to the hook fastening portion 3154b of the outer ring 3151 in a hook manner.

Similarly, the plurality of bolt fastening parts 3154a may be provided for bolting to the fan housing and for bolting to the second discharge guide 316 .

On the other hand, the second discharge guide 316 is disposed in front of the first discharge guide 315 and guides the air passing through the first discharge guide 315 toward the front discharge port 141. A discharge flow path Fin. However, it serves to increase the flow rate by gradually reducing the cross-sectional area of the discharge passage (Fin).

18 and 19 , the second discharge guide 316 includes a guide ring 3161 coupled to the front of the first discharge guide 315 .

The guide ring 3161 forms a discharge flow path Fin continuously connected to the first discharge guide 315, and serves to gradually reduce the flow path cross-sectional area while proceeding forward.

To this end, the inner circumferential surface 3161a of the guide ring 3161 is provided with a second inclined surface 3161a1 that gradually descends while proceeding forward in a direction parallel to the rotation axis X-X.

The second inclined surface 3161a1 forms a second inclination angle θ2 with respect to a direction parallel to the rotation axis X-X. In order to prevent flow loss due to a sudden change in the discharge flow path Fin, the descending angle of the second inclined surface 3161a1 to the rear end and the front end 3161b of the second inclined surface 3161a1 is a second inclination angle θ2. It may be kept constant, and preferably, the second inclination angle θ2 may be limited to have a range of 40˚˚.

As will be described later, the second inclination angle θ2 is greater than the third inclination angle θ3 of the third inclined surface 3171a formed on the inner circumferential surface 3171 of the third discharge guide 317 .

In addition, the front-back direction length L_Z1 of the second inclined surface 3161a1 in a direction parallel to the rotation axis X-X is greater than the front-back direction length L_Z2 of the third inclined surface 3171a in a direction parallel to the rotation axis X-X. can be formed.

On the other hand, the second discharge guide 316 includes a second vane 3162 formed to protrude radially inward from the inner circumferential surface 3161a of the guide ring 3161 , that is, toward the discharge passage Fin.

The second vane 3162 serves to finally increase the straight-line speed component with respect to the air that has passed through the first vane 3153 described above. However, the first vane 3153 and the second vane 3162 do not need to be provided as airfoils, and may be provided in the form of a partition in which the thickness is maintained constant.

As shown, the second vane 3162 is formed to protrude radially inward from the inner circumferential surface 3161a of the guide ring 3161, and extends in a straight line along the direction parallel to the rotation axis X-X.

Each of the second vanes 3162 are arranged at equal intervals along the circumferential direction of the inner circumferential surface 3161a of the guide ring 3161 . In this case, the second vane 3162 may be disposed at the same interval as the first vane 3153 .

In addition, the interval between the inner end 3162a of the second vane 3162 and the rotation axis (X-X) is kept constant while proceeding in a direction parallel to the rotation axis (X-X).

In addition, as shown in FIG. 20 , the interval dV between the inner end 3162a of the second vane 3162 and the rotation axis X-X is the front end 3161b and the rotation axis of the second inclined surface 3161a1. greater than or equal to the interval between (X-X). That is, the second vane 3162 may be limited so as not to protrude more inward than the second inclined surface 3161a1 in the radial direction. This is to minimize the flow loss by limiting the area of the second vane 3162 that can act as a resistance to the air flow.

On the other hand, a plurality of fastening portions 3163 are formed on the outer circumferential surface of the guide ring 3161 . The plurality of fastening parts 3163 includes hook fastening parts 3163b and 3163c and bolt fastening parts 3163a. Among the hook fastening parts 3163b and 3163c, those formed on the rear side have a purpose for fastening to the first discharge guide 315 , and those formed on the front side are used for fastening with the second discharge guide 316 . have

The third discharge guide 317 is disposed in front of the second discharge guide 316 and serves to form a discharge flow path Fin continuous to the second discharge guide 316 . Furthermore, the third discharge guide 317 serves to gradually expand the cross-sectional area of the discharge flow path Fin, which has been reduced by the second inclined surface 3161a1 of the second discharge guide 316 .

In order to expand the flow passage cross-sectional area, as shown in FIG. 20 , the inner peripheral surface 3171 of the third discharge guide 317 is a third inclined surface 3171a that gradually rises while proceeding forward in a direction parallel to the rotation axis X-X. ) is provided.

In order to prevent flow loss due to a sudden change in the discharge flow path Fin, the rising angle of the third inclined surface 3171a to the rear end 3174 and the front end 3173 of the third inclined surface 3171a is the third inclination angle ( θ3) can be kept constant.

At this time, the third inclination angle θ3 is smaller than the first inclination angle θ1 of the first inclined surface 21a1 of the front door part 21a as will be described later. Furthermore, the third inclination angle θ3 may be smaller than the second inclination angle θ2 of the second discharge guide 316 .

On the other hand, the rear end 3174 of the inner circumferential surface 3171 of the third discharge guide 317 has a cross-sectional area of the discharge passage Fin that has been gradually reduced by the inner circumferential surface 3161a of the second discharge guide 316 again gradually. It acts as a channel neck portion 3174 that is a turning point that expands to . The front end of the inner peripheral surface 3171 of the third discharge guide 317 becomes a circular front discharge port 141 through which air is discharged to the outdoor unit.

Also, as illustrated, the length L_Z2 of the third inclined surface 3171a in the X-X direction may be smaller than the length L_Z1 of the second inclined surface 3161a1 in the X-X direction. Through this, the length in the direction of the rotation axis (X-X) including the second discharge guide 316 and the third discharge guide 317 can be minimized, and it has a larger length of the axis of rotation (X-X) and has a larger blowing capacity. An all-broadcast wind fan 311 can be applied.

Meanwhile, a fastening part 3175 coupled to the hook fastening part 3163c of the above-described second discharge guide 316 may be provided on the outer circumferential surface 3172 of the third discharge guide 317 .

<Detailed composition of the discharge flow path according to the position of the front door>

Hereinafter, a change in the discharge flow path Fin and a change in the discharge air flow Fo according to the position of the front door unit 21a provided in the indoor unit according to an embodiment of the present invention will be described with reference to FIGS. 20 to 24 . .

20 shows a state in which the front door portion 21a is stopped at the rearmost position Pr.

The rearmost position of the front door part 21a, and the forwardmost position and intermediate position, which will be described later, may all be defined as a stop position of the outer panel 211 disposed in the front of the front door part 21a. Hereinafter, unless otherwise limited, the position of the front door unit 21a will be described based on the position of the outer panel 211 of the front door unit 21a.

When the front door part 21a is moved to the rearmost position, the outer panel 211 of the front door part 21a is in the third inclined surface area Z2 based on the rotation axis X-X direction.

At this time, the maximum radius of the front door part 21a is the radius of the outer panel 211, and the radius dD of the outer panel 211 is smaller than the maximum radius of the front discharge port 141, but the rotation axis X-X ) is formed to be larger than the linear distance (dV) from the passage neck portion 3174. Therefore, the outer panel 211 of the front door part 21a cannot move to the second inclined surface area Z1 further rear than the flow path neck part 3174 by passing the flow path neck part 3174, and the front of the flow path neck part 3174. is stopped at a position adjacent to

As such, when the outer panel 211 of the front door unit 21a is stopped at the front side of the flow passage neck 3174, the gap between the outer circumferential surface of the outer panel 211 and the third inclined surface 3171a is minimized, and substantially discharged. The flow path (Fin) is in a closed state.

Meanwhile, when the first motor of the front door driving unit 21b is driven in the state shown in FIG. 20 , the above-described push ring is rotated. As described above, the rotation of the push ring is again converted into a linear motion of the moving cylinder, and the moving cylinder is linearly moved forward.

By the linear movement of the moving cylinder, the front door 21a coupled to the front of the moving cylinder is moved forward together with the moving cylinder.

When the movement is started from the rearmost position Pr, the front door part 21a is moved to the mating position Pm and then stopped, or after moving to the mating position Pm, it is not stopped and immediately to the frontmost position ( It can be moved up to Pf).

21 and 22 show a stopped state after the front door part 21a is moved to the mating position Pm.

When the front door portion 21a is moved to the mating position Pm, the front surface of the outer panel 211 disposed at the forefront of the front door portion 21a is the front discharge port 141 in the direction parallel to the rotation axis X-X. ), and the front surface of the outer panel 211 forms the same plane as the front cabinet 14 .

At this time, the front door portion 21a is generally accommodated inside the second discharge guide 316 and the third discharge guide 317, and protrudes from the front discharge port 141 in a direction parallel to the rotation axis X-X. is almost non-existent.

On the other hand, as shown, the length L2 in the direction of the rotation axis (X-X) of the first inclined surface 21a1 composed of the outer panel 211, the inner panel 213 and the air guide part 2192b is the third inclined surface 3171a. ) of the axis of rotation (X-X) is formed longer than the length (L3).

In addition, the rear end of the first inclined surface 21a1 goes beyond the third inclined surface area Z2 and is disposed in the second inclined surface area Z1, and the time point at which the cross section of the discharge passage Fin is reduced is the passage neck portion 3174 ) is moved further backwards. In particular, the cross-sectional curved portion 2492b-2 of the first inclined surface 21a1 is entirely disposed in the second inclined surface region Z1, and the cross-sectional straight portion 2192b-3 is formed between the second inclined surface region Z1 and the second inclined surface region Z1. It is in a state that it spans the third inclined surface area Z2 at the same time.

Also, as described above, the first inclination angle θ1 of the first inclined surface 21a1 is greater than the third inclination angle θ3 of the third inclined surface 3171a. Through this, compared with the state in which the front door part 21a of FIGS. 23 and 24 is moved to the forwardmost position, the cross-sectional area of the discharge flow path Fin formed between the first inclined surface 21a1 and the third inclined surface 3171a This is formed narrower, and the flow velocity of air in the discharge passage (Fin) is further increased.

Also, the effective discharge port formed between the front end of the front door 21a and the front end 3173 of the third discharge guide 317 is substantially perpendicular to the rotation axis (X-X) direction. The flowing flow has a predetermined inclination by the first inclined surface 21a1 and the third inclined surface 3171a. That is, the effective discharge port formed between the front end of the front door 21a and the front end 3173 of the third discharge guide 317 forms an angle that is not perpendicular to the flow direction of the air in the discharge passage Fin. will do

Therefore, among the airflows that have exited the effective outlet, a decrease in flow velocity and an increase in pressure occur first at the front lower side of the effective outlet, and as a result, as shown in FIG. A lateral direction airflow is formed.

When the front door portion 21a is moved forward from the mating position Pm, it may be moved to the forwardmost position as shown in FIGS. 23 and 24 .

As shown, when the front door part 21a is moved to the most forward position, only a part of the first inclined surface 21a1 passes through the front discharge port 141 to the outside of the front cabinet 14 and the third discharge guide 317 . is protruded into

In more detail, the outer panel 211 and the inner panel 213 constituting the first inclined surface 21a1 are moved through the front discharge port 141 as a whole, and of the air guide part 2192b of the moving air guide 2192. A part of the front side passes through the front discharge port 141 .

At this time, the length L_ex in the front-rear direction in which the first inclined surface 21a1 protrudes from the front discharge port 141 in the direction parallel to the rotation axis X-X is the third inclined surface 3171a in the direction parallel to the rotation axis X-X. ) can be proposed at a level that is smaller than or equal to the front-back direction length (L_Z2).

In this way, by limiting the protrusion length of the first inclined surface 21a1 to a level less than or equal to the longitudinal length L_ex of the third inclined surface 3171a, the power consumption for moving the moving air guide 2192 forward can be minimized. and it is possible to minimize the size of the front door driving unit 21b for moving the moving air guide 2192 forward. In addition, since the internal structure of the discharge flow path Fin, which can be visually confirmed from the outside, can be kept to a minimum, it can be significantly aesthetically stabilized compared to the related art.

On the other hand, in a state in which the front door part 21a is moved to the most forward position, the air discharged through the discharge passage Fin forms a forward direction airflow.

That is, the lateral direction airflow formed at the mating position is converted into the forward direction airflow.

The forward direction airflow may be defined as the discharge airflow Fo in which an effective discharge angle formed between the direction parallel to the rotation axis X-X and the discharge airflow direction is about 20 degrees.

However, the present invention is configured to form a forward-facing airflow, and to allow the airflow to reach a more distant location while securing a sufficient discharge capacity.

First, among the outer peripheral surfaces of the air guide portion 2192b constituting the first inclined surface 21a1, the cross-sectional straight-line portion 2192b-3 is positioned in front of the flow passage neck portion 3174 in the overall rotational axis X-X direction.

Accordingly, the flow passage cross-sectional area A at the location of the flow passage neck 3174 may be maintained larger than that of the discharge flow passage Fin formed when the front door portion 21a is in the mating position. Due to this, the flow resistance can be significantly reduced and a larger amount of air blown can be secured.

In addition, as described above, the third inclination angle θ3 of the third inclined surface 3171a formed on the inner circumferential surface 3171 of the third discharge guide 317 is greater than the first inclination angle θ1 of the first inclined surface 21a1. formed smaller.

Accordingly, the discharge passage Fin formed between the first inclined surface 21a1 and the third inclined surface 3171a may be maintained at a level less than or equal to the passage cross-sectional area of the passage neck 3174 or may be gradually reduced.

For this reason, the flow rate may be continuously increased or at least a certain level of flow rate may be maintained until the final discharge is completed. As a result, the discharge air flow Fo can be reached to a more distant area.

On the other hand, since excessive reduction of the flow passage cross-sectional area increases the flow resistance, it needs to be maintained within a predetermined range. Illustratively, the smallest flow path cross-sectional area among the flow path cross-sectional areas B1 and B2 formed by the first inclined surface 21a1 and the third inclined surface 3171a is smaller than or equal to the flow path cross-sectional area A in the flow path neck 3174, and , may be set to be greater than or equal to 70% of the passage cross-sectional area A of the passage neck 3174.

Also, similarly to the mating position described above, the effective discharge port formed between the front end of the front door 21a and the front end 3173 of the third discharge guide 317 flows in the discharge passage Fin. It forms an angle that is not perpendicular to the direction.

However, unlike in the above-described mating position, a decrease in the flow rate and an increase in pressure occur first at the upper front side of the effective discharge port among the airflows exiting the effective discharge port.

As a result, as shown in FIG. 24 , the discharge air flow Fo can form a forward discharge air flow having a direction that generally moves forward.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and a variety of It is obvious that variations can be made. In addition, even if the effect of the configuration of the present invention is not explicitly described and described while describing the embodiment of the present invention, it is natural that the effect predictable by the configuration should also be recognized.

1: Indoor unit Ⅰ: Cabinet assembly
Ⅱ: Door assembly Ⅲ: Blowing fan assembly
IV: heat exchange assembly V: humidification assembly
Ⅵ: filter assembly Ⅶ: filter cleaning assembly
21: front door module 22: side door module
224a, 224b: side outlet 225a, 225b: side vane
23: hidden vane module 31: all broadcast wind module
32a, 32b, 32c: side broadcast wind module
322a, 322b, 322c: side broadcast wind motor
321a, 321b, 321c: side air fan
323a, 323b, 323c: side air fan housing
21a: front door unit 21b: front door driving unit
2192: moving air guide 315: first discharge guide
316: second discharge guide 317: third discharge guide

Claims (21)

a cabinet in which an inlet through which air is introduced is formed on the rear side, and a front outlet port through which air is discharged is formed on the front side;
a heat exchanger for exchanging heat between the air introduced into the suction port and the refrigerant;
a blower fan having a rotation axis extending from the front side of the cabinet toward the rear side of the cabinet and sucking in the heat-exchanged air;
a discharge guide in which the front discharge port is formed at a front end, and a discharge flow path for guiding the air discharged from the blowing fan to the front discharge port is formed therein; and
a front door provided inside the discharge guide and movably provided in a direction parallel to the rotation axis between a frontmost position moved maximally forward and a rearmost position maximally moved rearward;
including,
The outer circumferential surface of the front door forming the discharge flow path together with the discharge guide has a first inclined surface that gradually rises while proceeding forward in a direction parallel to the rotation axis,
When the front door part is moved to the frontmost position, a part of the first inclined surface passes through the front outlet and protrudes to the outside of the cabinet.
In claim 1,
The inner circumferential surface of the discharge guide is
a second inclined surface gradually descending while proceeding forward in a direction parallel to the rotation axis; and
a third inclined surface formed in front of the second inclined surface, gradually ascending while progressing forward in a direction parallel to the rotation axis, and extending to the front discharge port;
including,
In a state in which the front door part is moved to the forward position, the length in the front-rear direction in which the first inclined surface protrudes from the front discharge port in a direction parallel to the rotation axis is the front-rear direction of the third inclined surface in a direction parallel to the rotation axis. An air conditioner that is less than or equal to the length.
In claim 2,
A front-back direction length of the third inclined surface in a direction parallel to the rotation axis is smaller than a front-back direction length of the first inclined surface in a direction parallel to the rotation axis line.
In claim 3,
A front-back direction length of the third inclined surface in a direction parallel to the rotation axis line is smaller than a front-back direction length length of the second inclined surface in a direction parallel to the rotation axis line.
In claim 2,
The first inclined surface forms a direction parallel to the rotation axis and a first inclination angle,
The third inclined surface forms a direction parallel to the rotation axis and a third inclination angle,
The third inclination angle is smaller than the first inclination angle.
In claim 5,
The second inclined surface forms a direction parallel to the rotation axis and a second inclination angle,
The air conditioner in which the second inclination angle is greater than the third inclination angle.
In claim 2,
Between the second inclined surface and the third inclined surface, a passage neck portion which is the shortest distance from the rotation axis among the inner peripheral surfaces of the discharge guide is formed;
In a state in which the front door part is moved to the forward position, a minimum cross-sectional area among the cross-sectional areas of the discharge flow path formed between the outer peripheral surface of the front door part and the third inclined surface is formed between the outer peripheral surface of the front door part and the flow passage neck part An air conditioner that is less than or equal to the cross-sectional area of the discharge flow path.
In claim 7,
The minimum cross-sectional area is 70% or more and 100% or less of a cross-sectional area of a discharge passage formed between an outer peripheral surface of the front door and the passage neck.
In claim 2,
The first inclined surface extends to the front end of the front door, and the maximum radius of the front door is formed at the front end of the disk shape,
The maximum radius of the front door is smaller than the maximum radius of the blowing fan.
10. In claim 9,
A maximum radius of the front door portion is smaller than a maximum radius of the front discharge port, which is a circular opening.
10. In claim 9,
The blowing fan includes at least one blade extending in an oblique direction with respect to the rotation axis,
The maximum radius of the blowing fan is an air conditioner that is a linear distance from the rotation axis to the outer end of the blade.
In claim 7,
When the front door part is moved to the rearmost position, the front door part is entirely accommodated in the discharge guide.
In claim 12,
The first inclined surface extends to the front end of the front door,
When the front door unit is moved to the rearmost position, the front end of the front door unit is positioned in the area of the third inclined surface in a direction parallel to the rotation axis.
In claim 13,
The maximum radius of the front door is formed at the front end of the disk shape,
The maximum radius of the front door portion is greater than a linear distance from the rotation axis to the flow passage neck portion.
In claim 7,
The front door unit may be stopped at an intermediate position between the frontmost position and the rearmost position,
When the front door unit is moved to the intermediate position, the air flow direction is switched to a direction different from the air flow direction that was discharged to the front discharge port when the front door unit was moved to the forward position.
In claim 15,
The intermediate position is an air conditioner formed between the front discharge port and the flow passage neck in a direction parallel to the rotation axis.
In claim 15,
The intermediate position is an air conditioner in which the front end of the front door is at the same position as the front outlet in a direction parallel to the rotation axis.
In claim 15,
When the front door is stopped at the intermediate position,
The cross-sectional area of the discharge flow path formed between the first inclined surface and the third inclined surface is gradually decreased while proceeding forward in a direction parallel to the rotation axis.
In claim 2,
The discharge guide includes at least one vane that is formed to protrude from the second inclined surface toward the discharge passage,
The at least one vane extends from a rear end of the second inclined surface to a front end in a direction parallel to the rotation axis.
In paragraph 19,
An air conditioner in which a distance between the inner end of the at least one vane and the rotation axis is kept constant while proceeding in a direction parallel to the rotation axis.
21. In claim 20,
The distance between the inner end of the at least one vane and the axis of rotation is greater than or equal to a distance between the front end of the second inclined surface and the axis of rotation.

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