JP2007155240A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner comprising a means for automatically removing dust from air filters without enlarging an indoor unit main body, and shortening a dust removing time. <P>SOLUTION: Parts opposite to front and upper face portions of a heat exchanger 8, of the indoor unit main body 1 are provided with a front suction opening 4 and an upper suction opening 5, a front air filter 17 and an upper air filter 20 are movably disposed in opposition to these suction openings in a divided state, an air filter cleaning unit S comprising a rotary brush 30 for removing dust from each of the air filters and a dust receiving passage 31 for collecting dust, is disposed over the whole length in the axial direction on a central portion between portions opposite to the front suction opening and the upper suction opening, of a frame assembly 16, the front air filter is disposed on a front face of the frame assembly, the upper air filter is disposed on its upper face, the front air filter is reciprocated between the air filter cleaning unit and an upper air filter installation position, and the upper air filter is reciprocated between the air filter cleaning unit and an front air filter installation position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner provided with means for automatically removing dust trapped from room air by an air filter from the air filter.

In an indoor unit of an air conditioner, room air is sucked into the main body from the suction port, but dust contained in the room air is captured by an air filter provided facing the suction port, and only the room air is a heat exchanger. It is led to heat exchange. As the air conditioning operation continues, dust trapped in the air filter accumulates, and if left as it is, the flow of indoor air to the heat exchanger is hindered, leading to a decrease in heat exchange efficiency.
In order to improve heat exchange efficiency, it is ideally necessary to periodically remove dust adhering to the air filter. A front panel constituting the front surface of the main body is rotatably provided. When the front panel is opened, the air filter is exposed. The air filter can be easily removed from the main body by grasping and pulling down the lower end of the air filter. After removing the dust adhering to the air filter, it can be returned to its original position by pushing the air filter back into the main body.

However, an indoor unit of an air conditioner that is commonly used is called a so-called wall-mounted type, and is attached to a height of a wall surface of a room. For this reason, for example, it is difficult for elderly people and women to open and close the front panel and to attach and remove the filter, and the air filter is likely to remain dusty.
Therefore, for example, as disclosed in [Patent Document 1], an air conditioner provided with means for automatically removing dust adhering to the air filter has been provided. Specifically, an air filter is disposed from the front surface to the top surface of the inverted V-shaped heat exchanger accommodated in the housing. Near the top of the heat exchanger, there are provided a moving means for moving the air filter to the front and back surfaces of the housing, and a dust removing portion for scraping off dust as the air filter moves.
JP 2004-044933 A

  According to the technique of the above [Patent Document 1], the long air filter can be moved back and forth within the housing without being pulled out, and can be cleaned. In addition, a space for moving the air filter must be secured. Specifically, at the time of dust removal, the air filter is moved forward and the front lower end is moved to a portion facing the outlet. Further, the air filter is moved backward to move the lower end on the back side to the lower end on the back side of the housing.

A dust removal part is provided near the top of the heat exchanger, and the middle part of the air filter is moved back and forth between the dust removal part. It was difficult to always make the mounting positional relationship appropriate. For this reason, it is easy for the filter to be bent or slipped into the dust removing portion, resulting in a problem that the dust is left behind.

  The present invention has been made on the basis of the above circumstances, and the object of the present invention is to always keep the positional relationship between the air filter and the dust removing means for removing the dust adhering to the air filter, and to mass production. In terms of performance, product variations are less likely to occur, and there is a means to automatically remove dust from the air filter without increasing the size of the indoor unit body, reducing labor and reducing dust removal time. An air conditioner indoor unit is provided.

  In order to satisfy the above object, the indoor unit of the air conditioner of the present invention has a vertical frame on both the left and right sides facing the suction side of the heat exchanger of the indoor unit body that houses the heat exchanger and the blower inside. A frame with a horizontal frame is provided between both sides, and a frame assembly that forms an opening therebetween is provided. An air filter is movably disposed in the frame assembly and attached to the air filter. An air filter cleaning unit having a dust removing means for removing the removed dust and a dust receiving portion for collecting the removed dust is attached, and the air filter is configured to reciprocate through the air filter cleaning unit. And

Furthermore, the indoor unit of the air conditioner of the present invention includes an indoor unit main body that houses a heat exchanger and a blower therein, a front panel that covers the front surface of the indoor unit main body, and a front surface portion and an upper surface portion of the heat exchanger. Are provided with a front suction port and a top suction port, respectively.
Further, the indoor unit of the air conditioner of the present invention includes a front air filter and an upper air filter that are separately formed and movably arranged to face the front suction port and the upper surface suction port, respectively, and the width of the indoor unit body An air filter cleaning unit is provided that includes a front air filter that is provided over the direction and moves, a dust removing unit that removes dust attached to the upper air filter, and a dust receiving unit that collects the removed dust.

  Further, the indoor unit of the air conditioner of the present invention is attached from the front surface to the upper surface of the heat exchanger, and is provided with frame bodies on the left and right side portions, the upper and lower ends, and the central portion, and the opening between them is a front suction port. And an air filter cleaning unit over the entire length in the width direction in the center between the front suction port and the upper surface suction port of the frame assembly. The front air filter is placed on the front of the frame assembly and the upper air filter is placed on the upper surface. The front air filter is moved back and forth between the air filter cleaning unit and the upper air filter installation position, and the upper air filter is cleaned. The unit was configured to reciprocate between the unit and the front air filter installation position.

According to the present invention, by providing the frame assembly, each air filter can be accurately installed at a predetermined position, variation due to products can be eliminated, and the operation of the air filter cleaning unit with respect to the air filter can always be performed accurately. .
Furthermore, since the air purification unit is attached to the frame assembly, the productivity of the air conditioner itself is improved. In the front air filter, the contact surface with the air cleaning unit serves as a presser for the air filter and a guide for moving the air filter.
Further, the frame assembly is provided with a space for attaching the dust box constituting the air filter cleaning unit and can be pulled out from the front when the front panel is opened, so that the dust box can be easily arranged and cleaned.
In addition, since the air filter cleaning unit and the drive unit that drives all of the front moving mechanism and the upper moving mechanism are provided on the side surface of the frame assembly, there is no space problem and power transmission is ensured.
Furthermore, simply by attaching the dust box to the frame assembly, the dust receiving part in the dust box and the intake / exhaust device can be connected, and the dust can be reliably discharged outdoors.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic side sectional view of an indoor unit of an air conditioner, and FIG. 2 is a front view of the indoor unit body 1 with the front panel 2 removed. (Note that parts not marked in the description are not shown. The same applies hereinafter.)
The indoor unit main body 1 is composed of a front panel 2 and a rear plate casing 3 that constitute a front casing of the indoor unit main body 1, and has a horizontally long shape in the width direction with respect to the vertical direction. A front suction port 4 is opened at a part of the front side of the indoor unit body 1, and a movable panel 2 </ b> A supported by an opening / closing drive mechanism is fitted into the front panel 2 facing the front suction port 4.
When the operation is stopped, the movable panel 2A is joined to the surface of the front panel 2 to become the same surface and closes the front suction port 4. However, during operation, the movable panel 2A protrudes and displaces to the front, creating a gap communicating with the room. The front suction port 4 is controlled to be opened indoors. An upper surface suction port 5 is provided in the upper part of the indoor unit body 1. A frame-like crosspiece is fitted into the upper surface suction port 5 and is partitioned into a plurality of spaces by the crosspiece.

A blow-out opening 6 is opened at the front lower portion of the indoor unit body 1, and two blow-out louvers 7a and 7b are provided in parallel in the blow-out opening 6. The blowout louvers 7a and 7b can open and close the blowout opening 6 according to their respective rotation postures and set the blowout direction of the heat exchange air according to operating conditions.
In the indoor unit body 1, a heat exchanger 8 formed in a substantially inverted V shape by the front heat exchanger portion 8A and the rear heat exchanger portion 8B is disposed. An electrical component box 9 is juxtaposed on the side. The front heat exchanger portion 8A is formed in a curved shape substantially parallel to the front panel 2 with a gap therebetween, and faces the front suction port 4 and the upper suction port 5, while the rear heat exchanger portion 8B is straight. And is inclined obliquely and opposed to the upper surface suction port 5.

  An indoor fan 10 is disposed between the front and rear heat exchanger portions 8A and 8B of the heat exchanger 8. The indoor blower 10 includes a fan motor disposed in a space on one side end of the indoor unit main body 1 and a cross-flow fan in which one support shaft is mechanically connected to the rotation shaft of the fan motor. An intake / exhaust device (hereinafter referred to as “ventilation unit”), which will be described later, is shown in FIG. 2 only in the space on the other side end of the indoor unit body 1 that is adjacent to the bearing portion that supports the front end of the cross flow fan. 11 is provided.

The lower end portion of the front heat exchanger portion 8A is placed on the front drain pan 12a, and the lower end portion of the rear heat exchanger portion 8B is placed on the rear drain pan 12b. The front and rear drain pans 12a and 12b receive drain water dropped from the respective heat exchanger portions 8A and 8B, and can drain the water to the outside through a drain hose (not shown).
The outer surfaces of the side walls of the front and rear drain pans 12a and 12b are provided close to the indoor blower 10 and constitute a nose for the crossflow fan of the indoor blower 10. A partition wall member 14 connects the side wall portions of the front and rear drain pans 12a and 12b, which are noses, and the side portions of the outlet port 6. A space surrounded by the partition member 14 is a blowout ventilation path 15 that communicates the nose and the blowout opening 9.

On the other hand, a frame assembly 16 is interposed between the front panel 2 and the front side to the upper side of the heat exchanger 8, and this frame assembly is attached to the front panel 2 via a fixture. The front part of the frame assembly 16 includes front air filters 17 and 17 that are divided into left and right parts disposed on the front face of the frame body, and an air purification unit that is a secondary air filter disposed on the inner side of the frame body. 18 is attached back and forth.
Upper air filters 20, 20 divided into left and right parts are attached to the upper surface of the frame assembly 16. Further, an air filter cleaning unit S is attached between the upper end of each front air filter 17 and the front end of each upper air filter 20.

In other words, the front air filter 17 and the air cleaning unit 18 are interposed between the front suction port 4 and the front heat exchanger portion 8 </ b> A constituting the heat exchanger 8. The upper air filter 20 is interposed between the upper surface suction port 5, a part of the front side heat exchanger part 8A, and the rear side heat exchanger part 8B. Therefore, the air filter cleaning unit S is disposed to face a portion between the front suction port 4 and the upper suction port 5.
The air filter cleaning unit S is formed to have the same length in the width direction as the length in the width direction of the front air filter 17 and the upper air filter 20 and has a certain thickness dimension in the front-rear direction. The arrangement position of the air filter cleaning unit S is a so-called corner portion where the front surface portion and the upper surface portion of the front panel 2 intersect, and is a dead space that is inevitably formed between the front panel 2 and the heat exchanger 8. is there.

  Therefore, the frame assembly 16 with the front air filter 17, the air cleaning unit 18, the upper air filter 20, and the air filter cleaning unit S attached to the front panel of the indoor unit body of the conventional configuration is left as it is. Can be installed in the state. In other words, by attaching the frame assembly 16 to the existing indoor unit main body, an air conditioner having an air filter automatic cleaning function described later can be configured, and the indoor unit main body 1 can be shared.

  The existing air filter provided in the indoor unit main body 1 is composed of one sheet so as to face the upper surface suction port 5 together with the front surface suction port 4. Here, the front air filter 17 and the upper air filter 20 are combined. It is divided in two. Each of the front air filter 17 and the upper air filter 20 is divided into left and right parts with the intermediate part in the width direction of the heat exchanger 8 as a boundary, and is constituted by a total of four air filters.

  Each of the divided air filters 17 and 20 has a large width dimension of the upper and lower sides along the body width direction in the peripheral frame and the central reinforcing bar a provided in the center in the width direction and in a direction orthogonal to the width direction. Yes, the width of the other peripheral frame and the reinforcing bar is small. A mesh portion b having a predetermined mesh is provided in an opening formed between the frames.

  The air cleaning unit 18 includes a pair of left and right electric dust collectors 22 and 22 arranged side by side, and a dust collector power supply unit 23 disposed on the side of one (right side in FIG. 2) of the electric dust collector 22. Each electrostatic precipitator 22 is designed to have exactly the same size and shape, and includes a charge-side electrode that gives charge to the dust in the flowing air, and a dust-collection side electrode that captures the charged dust. Each electrode surface is coated with a deodorizing agent that adsorbs odorous components contained in the air, and has both a dust collecting function and a deodorizing function as an electric dust collector.

Each electric dust collector 22 is detachably attached to the air cleaning unit storage portion 16 a of the frame assembly 16, and the dust collector power source 23 is fixed to the air cleaning unit storage portion 16 a of the frame assembly 16 and is installed in the electrical component box 9. Electrically connected to electrical components. Terminal portions c project from the left and right side portions of each electrostatic precipitator 22, and the terminal portions c are engaged and electrically connected in a state of being attached to the air cleaning unit storage portion 16 a of the frame assembly 16. It is designed to function as one electric dust collector.
A side portion of the dust collector power supply unit 23 is provided with a connection portion d that is electrically connected to the terminal portion c of the electric dust collector 22. Each electrostatic precipitator 22 may be attached to either the left or right position, and the electric precipitator 22 and the precipitator power source 23 are electrically connected to each other when attached to the frame assembly 16.

FIG. 3 is a perspective view of the frame assembly 16, and FIG. 4 is a cross-sectional view of the frame assembly 16.
In FIG. 3, the front air filter 17, the upper air filter 20, and the air filter cleaning unit S are shown, but the air cleaning unit 18 is omitted. FIG. 4 shows a schematic cross section of the front air filter 17, the upper air filter 20, the air filter cleaning unit S, and the air cleaning unit storage portion 16 a.
The frame assembly 16 is formed in accordance with the shape of the outer frame body of the front panel 2 and has a vertical frame on both the left and right side portions, a central portion constructed between the both side portions, a lower front portion, and a horizontal frame on the back portion. It is comprised by the frame provided with.
Of these, some or all of the horizontal frames in the lower front portion and the rear portion are omitted, and only the horizontal frame in the central portion is used. The main body may be a frame provided with a vertical frame on both the left and right side portions and a central horizontal frame constructed between the both side portions.

  In addition, here, only the rear portion of the frame body has a total length that opposes the entire length in the width direction of the indoor unit body 1, and the frame portion at the center portion and the lower front portion excluding the rear portion is connected to the heat exchanger 8. It is formed in accordance with the dimension in the width direction and faces the heat exchanger 8. The side view shape is formed in accordance with the cross-sectional shape of the front panel 2. Between these frames is an opening that faces the front suction port 4 and the upper suction port 5.

  The opening on the front side of the frame body assembly 16 constitutes an air purification unit housing portion 16a to which the air purification unit 18 is attached inside the frame body, and the divided front air filter 17 is on the front side of the frame body. A front-side air filter housing portion 16b that is a space that can be attached and can extend the upper air filter 20 to the front side of the front air filter 17 on the front surface of the frame body is provided.

An upper air filter 20 divided on the inner side of the frame body is attached to the opening on the upper surface side of the frame assembly 16 and an upper air filter capable of extending the front air filter 17 on the upper surface side of the upper air filter 20. A storage portion 16c is provided. The left and right side portions of the upper surface side air filter housing portion 16c and the frame of the central partition portion serve as guide portions that support the air filters 17 and 20 in a movable manner.
As will be described later, the upper end of each front air filter 17 is inserted into and supported by the air filter cleaning unit S in a normal state in which the dust removal operation is not performed on the front air filter 17. Similarly, the front end of each upper air filter 20 is inserted into the air filter cleaning unit S and supported in a normal state (non-dust removal operation state) with respect to each upper air filter 20.

If the front panel 2 of the indoor unit body 1 is opened, the front and upper air filters 17 and 20 can be easily detached from the front and upper air filter storage portions 16b and 16c. In addition, the pair of electrostatic precipitators 22 constituting the air cleaning unit 18 can be easily detached from the air cleaning unit storage portion 16a.
The air filter cleaning unit S is an air filter provided between the front side air filter storage part 16b and the upper side air filter storage part 16c of the frame assembly 16 except for a part (a seal member 34 described later). It is configured to be detachable from the cleaning unit mounting portion 16d.

In this way, the air purification unit storage portion 16a in which the air purification unit 18 is disposed on the front side of the frame assembly 16 is configured, and the front air filter storage portion 16b in which the front air filter 17 is disposed on the front surface of the air purification unit 18. Thus, there is no need to provide a separate mounting frame on the front surface of the heat exchanger and attach an air cleaning unit as in the prior art, and the productivity of the air conditioner can be improved.
In particular, as shown in FIG. 3, the air filter cleaning unit S and an air filter moving mechanism (air filter moving means), which will be described later, are disposed on one side of the frame assembly 16 at a portion facing the air filter cleaning unit S. A drive unit 25 having a drive source for driving 55 and a drive mechanism is attached. The electrical component box 9 is disposed on the side of the drive unit 25.

FIG. 5 is a perspective view of the air filter cleaning unit S and a portion near the air filter cleaning unit S, and FIG. 6 is a longitudinal sectional view of the same portion as FIG.
The air filter cleaning unit S houses a rotating brush (dust removing mechanism) 30 that removes dust adhering to the front air filter 17 and the upper air filter 20 as will be described later, and the rotating brush 30 inside. A dust box 32 having a dust receiving passage (dust receiving portion) 31 for collecting dust removed by the rotating brush 30 and a seal member 34 capable of opening and closing an opening 33 provided in the dust box 32 are configured.
The dust box 32 is a combination of a box case 32a and a box cover 32b having openings facing each other, and accommodates the rotary brush 30 in a state of surrounding the rotary brush 30 along the axial direction. The opening 33 is provided on the lower surface of the box case 32a, from which a part of the rotating brush 30 is exposed.

  The seal member 34 is disposed at a lower portion of the opening 33 so as to face the opening 33. The seal member 34 is formed of a flexible elastic material such as synthetic rubber, and is supported by a lift mechanism 45 described later. Normally, it is in a position where it does not contact the portion of the rotating brush 30 exposed from the opening 33, and the opening 33 can be closed by operating the lift mechanism 45.

The dust receiving passage 31 is a space in the dust box 32 formed on the side of the rotating brush 30 and along the axial direction of the rotating brush 30, and is an opening through which a part of the peripheral surface of the rotating brush 30 is exposed. All but the part 33 are closed. The dust receiving passage 31 forms a passage surface below the axis of the rotating brush 30 and can reliably receive dust.
Further, a scraping projection 35 is provided between the dust receiving passage 31 and the housing portion of the rotating brush 30 by the box cover 32b constituting the dust box 32. The scraping protrusion 35 is always inserted into the bristles of the rotary brush 30 along the axial direction of the rotary brush 30 and is in a position where the bristles are in sliding contact with the rotation of the rotary brush 30.

FIG. 7 is a partial perspective view of the box cover 32b for explaining the scraping protrusion 35. As shown in FIG.
The scraping projections 35 are provided integrally with the box cover 32b over the width direction of the box cover 32b, and protrude from each other at a predetermined interval. Therefore, the scraping projection 35 has a comb shape and scrapes off dust adhering to the hair tips of the rotating brush 30 as the rotating brush 30 rotates. Due to the structure of the dust box 32, the dust that has been scraped off falls into the dust receiving passage 31.

8 is a perspective view of the dust box 32 with the box cover 32b removed, FIG. 9A is a perspective view showing a connection structure of the rotating brush 30, and FIG. 9B is a perspective view of the side of the dust box 32. FIG.
The rotary brush 30 has a unit structure divided into left and right so as to face the front air filter 17 and the upper air filter 20 divided in the left and right direction. That is, the axial lengths of the divided rotary brushes 30 and 30 are the same as the lengths of the divided front and upper air filters 17 and 20 in the width direction, and are arranged at the same positions.

Each of the divided rotary brushes 30 includes a shaft portion 30a and a plurality of brush portions 30b that are provided on the peripheral surface of the shaft portion 30a with a predetermined interval and are spirally planted along the axial direction. I have. Both side ends of the shaft portions 30a of the divided rotary brushes 30 are bifurcated connecting portions f. In particular, as shown in FIG. 9A, the divided rotary brushes 30 engage with each other. Therefore, it can be connected with one touch.
When the rotating brush 30 is inserted into the box case 32a in this state, the connecting portion f of the divided rotating brush 30 is supported by a bearing portion h provided on the box case 32a. In addition, the presser cover 36 is fitted into the bearing portion h, so that the connecting portions f of the divided rotary brush 30 are rotatably supported by the box case 32a.

  In particular, FIG. 9B shows an enlarged view of one side of the dust box 32 (the right side of FIG. 8). A brush connection gear 37 is rotatably supported on the side surface of the dust box 32 so as to be exposed to the outside of the side surface, and the periphery of the brush connection gear 37 is covered with a cover except for the notch opening i. If the divided rotating brushes 30 are connected to each other and inserted into the dust box 32, one of the divided rotating brushes 30 is connected to the brush connecting gear 37 via the connecting portion f.

Thus, due to the configuration of the rotating brush 30 and the dust box 32, the rotating brush 30 is detachable from the dust box 32, and the rotating brush 30 is rotatably supported by the dust box 32 in the attached state. The rotating brush 30 can be separated into two divided rotating brushes and can be freely connected to each other.
On the other hand, the opening 33 provided in the dust box 32 and exposing the rotary brush 30 faces the mesh part b provided between the peripheral frames or the intermediate frames of the upper air filters 17 and 20 before being divided. Therefore, the rotating brush 30 can come into reliable contact with the front air filter 17 and the surface of the mesh portion b of the upper air filter 20.

10A is a perspective view of one side of the dust box 32 incorporated in the indoor unit main body 1, and FIG. 10B is a perspective view of the other side of the dust box 32 attached to the frame assembly 16.
On both the left and right sides of the dust box 32, handle portions 38 are integrally provided. When the air filter cleaning unit S that accommodates the rotating brush is attached to or removed from the air filter cleaning unit attachment portion 16d of the frame assembly 16, it can be easily performed by holding the handle portion 38.

9 is attached to the air filter cleaning unit mounting portion 16d of the frame assembly 16 at the center portion of the dust box 32 to prevent the center portion of the dust box 32 from being lifted. The engaging part locked together is provided.
As shown in FIG. 10A, a rectangular air introduction hole 39 is provided in the box cover 32b that forms the upper surface of one side (right side) of the dust box 32. As shown in FIG. The air introduction hole 39 is provided so as to face the dust receiving passage 31 and communicate with each other.

  As shown in FIG. 10B, a dust discharge cover 40 is integrally attached to the other side of the dust box 32. The dust discharge cover 40 is provided at the end of the dust receiving passage 31 and communicates with the air introduction hole 39 through the dust receiving passage 31. The dust discharge cover 40 is accommodated in a discharge box 41 provided in the frame assembly 16 with the air filter cleaning unit S attached to a predetermined part of the frame assembly 16.

  A connection port 41 a is integrally provided in the discharge box 41, and a connection hose 42 is connected to the discharge box 41 as described later, and communicates with the ventilation unit 11. Therefore, one end portion of the dust receiving passage 31 formed in the dust box 32 communicates with the outside of the air filter cleaning unit S that is outside the dust box 32 through the air introduction hole 39, and the other end portion of the dust receiving passage 31 is the above dust. The ventilation unit 11 communicates with the dust discharge cover 40, the discharge box 41, and the connection hose 42.

  The dust box 32 thus configured is molded using an antistatic resin material and is subjected to antibacterial treatment. Therefore, it is possible to prevent the adhesion of dust and the generation of mold and maintain a clean state for a long time. Similarly, the antibacterial treatment of the rotating brush 30 can be used to prevent adhesion of dust and generation of mold and maintain a clean state for a long time.

  Further, a smooth surface treatment is applied to the dust contact portion so that the movement of the dust within the dust box 32 is smooth. In particular, the dust receiving passage 31 is designed to have a thrust area of 12 mm or more over substantially the entire cross-sectional area, so that the pressure loss can be kept small in the actual dust removal operation, and the flow of wind can be made smooth. Is done. Moreover, the ridgeline in the dust receiving passage 31 forms a curved surface of R2 mm or more on the windward side, so that it is possible to reliably prevent the occurrence of problems such as dust not being caught and moving.

  As will be described later, the dust box opening 33 is closed by the sealing member 34 and the dust in the dust receiving passage 31 is discharged to the ventilation unit 11. It has been found from various experiments that the dust in the dust receiving passage is reliably moved by setting the wind speed at the end of the dust receiving passage 31 to be 2 m / s or more.

As shown in FIG. 10A (also shown in FIG. 3), the drive unit 25 includes four drive sources, the first to fourth drive motors 46 to 49, and the drive motors 46 to 46. 49 is attached to the side surface part, and is comprised from the gear assembly G provided with the casing 51 which accommodates the gear train mentioned later inside.
The first drive motor 46 and the second drive motor 47 shown in FIGS. 5 and 6 move the front air moving mechanism 52 and the upper air filter 20 that move the front air filter 17 as described later. The upper moving mechanism 53 is a driving source for each, and the front moving mechanism 52 and the upper moving mechanism 53 constitute a filter moving mechanism.

  In order to secure the torque required to drive the front and upper moving mechanisms 52 and 53 in the filter moving mechanism, it is basically sufficient to prepare one large driving motor, but the large motor is used for the frame assembly. When attached, the large-diameter size interferes with the electrical component box 9 and the front panel 2. Therefore, two small drive motors 46 and 47 having half the required torque are prepared to eliminate the problem of the installation space.

  Again, the third drive motor 48 shown in FIG. 10A constitutes a brush drive mechanism that drives the rotary brush 30. The fourth drive motor 49 drives a switching mechanism 61 that selectively switches to transmit the driving force of the first and second drive motors 46 and 47 to either the front moving mechanism 52 or the upper moving mechanism 53. Is for.

FIG. 11 is a perspective view in which a part of the drive unit 25 is omitted.
Only the third drive motor 48 is shown, the other drive motors are omitted, and a side portion of the gear case 51 constituting the gear assembly G is removed to show a part of the gear train. However, the support seat k of the first drive motor 46 and the support seat m of the second drive motor 47 are provided close to each other, and the support seat n of the fourth drive motor 49 is the casing 51. It is shown that it is provided at the lower end of the.

  A drive gear is fitted on the rotary shaft of the third drive motor 48, and a brush drive gear 62 that meshes with the drive gear is supported by protruding from the end face of the third drive motor 48. This brush drive gear 62 is partially exposed from the notch opening i of the cover provided on the side surface of the dust box 32 described above with reference to FIG. 9B and meshes with the brush connection gear 37 connected to the rotating brush 30. It is like that. The third drive motor 48 and the brush drive gear 62 constitute the brush drive mechanism. Other gears shown here will be described with reference to FIGS. 12 and 13.

12 is a perspective view of a gear train constituting the gear assembly G. FIG. 13 shows a part of the gear train by omitting the side surface portion of the casing 51 of FIG. 12, and a lift mechanism 45 for supporting the seal member 34. FIG.
A pair of gears E having the same gear diameter are supported with a predetermined interval at the right corner of the casing 51 shown in FIG. The shafts of these gears E are inserted with the rotation shafts of the first drive motor 46 and the second drive motor 47 described above from the side surface of the casing 51 into the support seats k and m. It is attached to the casing 51 side surface. The rotation shafts of the first and second drive motors 46 and 47 protrude from the support seats k and m, and the gear E is fitted and fixed to each.

Each gear E is meshed with a gear that is only partially supported by the casing 51, and a gear B is integrally provided on the rear surface of the gear. The gear B meshes with an adjacent large-diameter gear A, and a small-diameter upper gear Fu is provided coaxially with the gear A.
In other words, although the gear A and the upper gear Fu are provided coaxially, the gear A is supported by a support shaft protruding from the side surface of the casing 51, and the upper gear Fu constitutes the upper moving mechanism 53. Fit to the end of the spindle. Therefore, the gear A and the upper gear Fu are freely rotatable with respect to each other.

  The casing 51 supports a gear C that meshes with the gear A. The gear C meshes with the gear C as will be described later, and the gear D is supported at the tip of the drive arm 64 constituting the switching mechanism 61. Further, the front gear Ff is supported at a position symmetrical to the upper gear Fu around the gear C. The front gear Ff is fitted to the end of the spindle that constitutes the front moving mechanism 52.

As described above, the filter moving mechanism including the front moving mechanism 52 and the upper moving mechanism 53 is configured by the combination of the first and second drive motors 46 and 47 and the gear train G.
On the other hand, the rotation shaft of the fourth drive motor 49 (not shown) projects inward through the casing 51, and the base end portion of the drive lever 65 is fitted and fixed to the rotation shaft. The drive lever 65 includes a tongue piece 65a that is integrally extended from the base end in a direction orthogonal to the axial direction, and the base end of the drive arm 64 rotates at the tip of the tongue piece 65a. It is connected freely.

  The fourth drive motor 49, drive lever 65, drive arm 64, and gear D constitute the switching mechanism 61. That is, the drive lever 65 and the drive arm 64 are integrally rotated according to the rotation direction of the fourth drive motor 49, and the position of the gear D at the tip of the drive arm 64 is changed.

Further, the front end portion of the drive arm 64 and the gear D constituting the switching mechanism 61 are rotatably supported by the lower end portion of the gear arm 66 through a pin. The gear arm 66 is supported at its upper end portion by the casing 51 via a support shaft portion p, and the gear C is also supported by the support shaft portion p.
The gear arm 66 is rotatable around the support shaft portion p together with the gear C, and the gear D and the distal end portion of the drive arm 64 are rotatably connected to the lower end portion of the gear arm 66. For this reason, the gear D always meshes with the gear C regardless of the rotational posture of the gear arm 66.

While the drive arm 64 is rotated by the fourth drive motor 49 via the drive lever 65, the gear D connected to the drive arm 64 maintains the meshed state with the gear C, while the gear D is the upper gear. It is possible to select a position that can mesh with either the Fu or the front gear Ff, or that does not mesh with any of the gears Fu and Ff.
As shown only in FIG. 12, a micro switch 67 is attached to the corner of the casing 51. Depending on the position of the rotational displacement of the drive arm 64, the drive arm 64 comes into contact with the actuator of the micro switch 67 and is turned on, and a detection signal is sent to the control unit.

  That is, the drive arm 64 turns on the micro switch 67 at a position where the gear D supported by the drive arm 64 does not mesh with either the upper gear Fu or the front gear Ff. In other words, when the micro switch 67 is in the OFF state, the gear D is in a position where it meshes with either the upper gear Fu or the front gear Ff.

  The gear arm 66 constituting the switching mechanism 61 also serves as a lift mechanism 45 that supports the seal member 34. As shown only in FIG. 13, the lower end portion of the gear arm 66 forms a predetermined radius of curvature around the support shaft portion p, and an inner tooth portion 68 is provided on the inner surface side. A switching gear 69 is engaged with the internal tooth portion 68, and the switching gear 69 is fitted and fixed to an end portion of a seal support shaft 70 provided through the side surface of the casing 51.

  The seal support shaft 70 is supported by a bearing tool attached to the frame assembly 16 and is provided on the lower surface side of the seal member 34 and facing the longitudinal direction of the seal member 34. Therefore, when the fourth drive motor 49 constituting the switching mechanism 61 is driven and the gear arm 66 is rotated via the drive lever 65 and the drive arm 64, the switching gear 69 is also rotated. .

A seal drive cam 71 is provided at a predetermined portion of the seal support shaft 70. The seal drive cam 71 is generally cylindrical and includes a semi-disc-shaped cam portion q projecting in the radial direction at a part of the peripheral surface.
On the other hand, the seal member 34 is attached to a seal base 73, and the seal base 73 is supported by a seal guide mechanism 74 having a so-called pantograph structure. The seal guide mechanism 74 is provided in the frame assembly 16 and is folded in a flat shape in a normal posture where no lift force is applied. The seal guide mechanism 74 rises and deforms in a state where the upward lift force is applied, and causes the seal member 34 to move together with the seal base 73. Pushes upward.

  The seal driving cam 71 is configured to be able to contact and separate from a part of such a seal guide mechanism 74. When the seal drive cam 71 is in contact with a part of the seal guide mechanism 74, the seal guide mechanism 74 performs a rising operation, the seal member 34 is pushed up, and the seal drive cam 71 is separated from the seal guide mechanism 74. The seal guide mechanism 74 is naturally folded into a flat shape, and the seal member 34 is lowered.

The gear mechanism 66, the seal drive cam 71, and the seal guide mechanism 74 constitute the lift mechanism 45 for the seal member 34.
Next, the front moving mechanism 52 and the upper moving mechanism 53 will be described.
As shown in FIGS. 5 and 6 again, a pair of support shafts 75a and 75b are provided along both sides of the seal member 34 that opens and closes the opening 33 of the dust box 32. As described above with reference to FIG. 12, the front gear Ff or the upper gear Fu constituting the gear train is fitted and fixed to one end portion (right end portion) of each of the support shafts 75a and 75b. . Actually, the front gear Ff is attached to the left support shaft 75a of FIGS. 5 and 6, and the upper gear Ff is attached to the right support shaft 75b.

  The other end portions (left end portions) of the support shafts 75a and 75b are rotatably supported by the frame assembly 16 via bearings. In addition, the front air filter drive gear 76 or the upper air filter drive gear 77 is provided at the middle portion of the support shafts 75a and 75b and at the divided front and opposite to the central reinforcing bar a of the upper air filters 17 and 20. Is fixed. Before these, a part of upper air filter drive gear 76,77 protrudes from the opening part provided in the said frame assembly 16 to the front side or upper surface side.

  On the other hand, a so-called rack (spur gear) 78 is provided along the longitudinal direction on the back side of the central reinforcing bar a. The upper air filter drive gears 76 and 77 mesh with each rack 78 as a so-called pinion before protruding from the opening of the frame assembly 16. The central reinforcing bar a is not limited to being provided with the rack 78, but a continuous uneven groove or a hole with a predetermined interval is provided, and means for engaging with the hole are provided on the support shafts 75a and 75b. May be.

In particular, as shown in FIG. 6, the axial center positions of the front air filter driving gear 76 and the upper air filter driving gear 77 are at positions that form an isosceles triangle when the axial center position of the rotating brush 30 is regarded as the apex. Is set.
In any case, if the front gear Ff constituting the gear train rotates, the front air filter drive gear 76 provided on the support shaft 75a rotates, and the front air filter 17 is moved from the relationship between the pinion and the rack. The front air filter drive gear 76 is urged to move in the rotational direction. Further, when the upper gear Fu constituting the gear train rotates, the upper air filter driving gear 77 provided on the support shaft 75b rotates, and the upper air filter 20 is connected to the upper air filter driving gear 77 due to the relationship between the pinion and the rack. It is biased to move in the direction of rotation.

In this way, the front air filter drive gear 76 and the rack 78 provided on the front air filter 17 constitute a front moving mechanism 52 that moves the front air filter 17. The upper air filter drive gear 77 and the rack 78 provided on the upper air filter 20 constitute an upper moving mechanism 53 that moves the upper air filter 20.
The box case 32a constituting the dust box 32 is provided with a front guide 80 and an upper guide 85. That is, the front guide 80 and the upper guide 85 are integrally attached to the air filter cleaning unit S.

In other words, the front guide 80 is provided across the width direction of the box case 32a, and here includes a front guide shaft 81 made of a stainless steel rod. The front guide shaft 81 is located on the upper surface side of the frame assembly 16 and is provided in parallel with the support shaft 75a to which the front air filter drive gear 76 is fitted via the frame assembly 16. .
On both the left and right side portions and the central portion of the front guide shaft 81, a spacing holder 82 is provided for uniformly maintaining the spacing between the dust box 32 and the front guide shaft 81. The spacing holder 82 includes a protrusion 82a that can be freely contacted and separated at the corner of the box case 32a. The position of the front guide shaft 81 is fixed by contacting the protrusion 82a with the box case 32a. In addition, the distance between the dust box 32 and the front guide shaft 81 is set uniformly over the entire length.

Further, a filter guide 83 is attached to the front guide shaft 81 at a portion facing the central reinforcing bar a of each divided front air filter 17. The filter guide 83 has a deformed elliptical cross section and is formed of a smooth synthetic resin material. The filter guide 83 has a width that is slightly larger than the width of the central reinforcing bar a.
On the upper surface side of each filter guide 83, guide flanges t are provided on both sides in the width direction, and the width direction of the central reinforcing bar a can be fitted between the guide flanges t. Further, in a normal state, a part of the lower end side of the peripheral surface of the filter guide 83 is assembled so as to contact the upper surface of the central reinforcing bar a of the front air filter 17.

Similarly, the upper guide 85 is provided over the width direction of the box case 32 and includes an upper guide shaft 86 made of a stainless steel rod. The upper guide shaft 86 is located on the upper surface side of the frame assembly 16 and is provided in parallel with the support shaft 75 b to which the upper air filter drive gear 77 is fitted via the frame assembly 16.
Although not particularly shown here, the left and right side portions and the central portion of the upper guide shaft 86 are also provided with a spacing holder that uniformly maintains the spacing between the dust box 32 and the upper guide shaft 86. This spacing holder is provided with a protrusion that can freely come into contact with and separate from the corner of the box case 32a, and the position of the upper guide shaft 86 is fixed by abutting the protrusion against the box case 32a. Similarly, the distance from the guide shaft 86 is set uniformly over the entire length.

Further, a filter guide 88 is attached to the upper guide shaft 85 at a portion facing the central reinforcing bar a of each divided upper air filter 20. The filter guide 88 has a deformed elliptical cross section and is formed of a smooth synthetic resin material. The filter guide 88 has a width that is slightly larger than the width of the central reinforcing bar a.
On the upper surface side of each filter guide 88, guide flanges t are provided on both sides in the width direction, and the width direction of the central reinforcing bar a can be fitted between the guide flanges t. Further, in a normal state, a part of the lower end side of the peripheral surface of the filter guide 88 is assembled so as to contact the upper surface of the central reinforcing bar a of the upper air filter 20.

14 is a perspective view for explaining a connection structure between the air filter cleaning unit S and the ventilation unit 11, FIG. 15 is a partial perspective view of the inside of the ventilation unit 11, and FIG. 16 is a side cover of the fan casing 90 constituting the ventilation unit 11. It is the perspective view which removed.
The ventilation unit 11 originally has a function of discharging the air on the primary side or the secondary side of the heat exchanger 8 to the outside after taking indoor air into the indoor unit main body 1. As will be described later, it also serves as an intake / exhaust device for sucking dust collected by the air filter cleaning unit S from the front air filter 17 and the upper air filter 20 and discharging it to the outdoors. Therefore, the intake / exhaust device will be described below as the ventilation unit 11.

As described above with reference to FIG. 10 (B), the dust box 32 constituting the air filter cleaning unit S is provided with the dust discharge cover 40 at the side end, and the air filter cleaning unit S is assembled to the frame body. In a state of being attached to 16, it is accommodated in a discharge box 41 provided in the frame assembly 16.
As shown in FIG. 14, the discharge box 41 is integrally provided with a hose connection port 41a, and one end of a connection hose 42 is connected thereto. The connection hose 42 is bent so as to form a gentle curve, and is connected to a connection port 91 provided in the ventilation unit 11. That is, as will be described later, the dust removed from the front air filters 17 and 20 circulates in the connection hose 42 so that it is not clogged in the middle.

  As shown in FIG. 15, the fan casing 90 constituting the ventilation unit 11 is provided with a mounting hole 93, and the connection port 91 and the dust discharge path are formed on the outer peripheral surface of the fan casing 90 so as to communicate with the mounting hole 93. A dust guiding case 95 having 94 is attached. The connection port 91 is connected to the connection hose 42 extending from the air filter cleaning unit S, and communicates with the inside of the fan casing 90 of the ventilation unit 11 through the dust discharge path 94.

A wind damper 96 is provided in the middle of the dust discharge path 94 in the dust guide case 95, and the wind damper 96 is covered with a damper case 97. Dust guided from the connection hose 42 to the dust discharge path 94 is introduced into the fan casing 90 of the ventilation unit 11 via the wind damper 96.
The wind damper 96 is made of a plate that is bent into a substantially U shape when viewed from the side, and the damper case 97 is formed to match the shape of the wind damper 96 and protrudes from the dust guide case 95. To do. One end of the wind damper 96 is rotatably supported by the dust guide case 95 via the support shaft u, and the other end of the wind damper 96 hangs down on the dust discharge path 94 due to gravity. Close.

When a wind pressure higher than a predetermined pressure is applied to the connection hose 42, the other end of the wind damper 96 is pushed upward by the wind pressure to open the dust discharge path 94. If the wind pressure exceeding the predetermined pressure disappears from this state, the wind damper 96 closes the dust discharge path 94 again.
As shown in FIG. 16, the ventilation unit 11 includes a ventilation passage opening / closing damper 98 provided at a ventilation inlet opening at the center of the side surface of the fan casing 90, a mechanism for driving the damper 98, and the inside of the fan casing 90. It is comprised from ventilation mechanisms, such as the ventilation fan 99 arrange | positioned.

The ventilating passage opening / closing damper 98 is composed of a disc-shaped partition plate that covers the ventilation inlet and a disc-shaped damper that is rotatably disposed on the surface, and is open to predetermined portions of the partition plate and the damper, respectively. It has. In other words, the openings are communicated with each other by rotating the damper and overlapping the positions of the openings.
One of the openings communicates with the secondary space of the heat exchanger 8 and the other of the heat exchanger 8 before passing through the upper air filters 17 and 20 and being led to the heat exchanger 8. It is configured to communicate with the primary side space. The drive mechanism of the opening / closing damper 98 rotates the ventilation passage opening / closing damper 98 based on a control signal.

  As a result, when the secondary ventilation mode is selected, an action of guiding the heat exchanger secondary air that has passed through the heat exchanger 8 to the ventilation fan 99 is performed. When the primary side ventilation mode is selected, the operation of leading the heat exchanger primary side air before passing through the upper air filters 17 and 20 and being led to the heat exchanger 8 to the ventilation fan 99 is performed. When the fully closed mode is selected, an action of closing the ventilation suction port is performed.

  The fan casing 90 includes an exhaust port 90a, and an exhaust duct is connected to the exhaust port 90a. The portion of the fan casing 90 in which the exhaust port 90 a is provided from the mounting hole 93 to which the dust guide case 95 is mounted is set so as to be farthest from the tip of the ventilation fan 99. The exhaust duct penetrates the mounting wall surface of the indoor unit body 1 and protrudes outdoors, and the air blowing mechanism 100 constituting the ventilation unit 11 communicates with the outdoors via the exhaust duct.

  By selecting the secondary side ventilation mode or the primary side air ventilation mode, the ventilation suction port of the fan casing 90 is opened by switching the ventilation passage opening / closing damper 98, and the ventilation fan 99 in the fan casing 90 is rotationally driven. The air on the secondary side of the heat exchanger or the air on the primary side of the heat exchanger is discharged to the outside so as to perform a so-called ventilation action. The selection of the primary side and the secondary side is selected according to the state in the indoor unit main body as well as the state in the air-conditioned room. Further, when the fully closed mode is selected, the opening / closing damper 98 closes the ventilation suction port.

  Since the connection hose 42 communicating the air filter cleaning unit S and the ventilation unit 11 is connected to a dust guide case 95 provided between the ventilation suction port and the exhaust port 90a of the fan casing 90, the ventilation suction port If the ventilation fan 99 is rotationally driven by closing the above, negative pressure is applied to the air filter cleaning unit S side via the connection hose 42.

Next, the operation of the indoor unit of the air conditioner configured as described above will be described.
When the user presses the operation button on the remote control (remote control panel), the indoor blower 10 is driven and the air cleaning unit 18 is activated. Further, the compressor is driven in the outdoor unit communicating with the indoor unit via the refrigerant pipe, and the refrigeration cycle operation is started.
The room air is guided into the indoor unit body 1 from the front inlet 4 and the upper inlet 5 and passes through the front air filter 17 and the upper air filter 20 which are divided into two. At this time, dust contained in the room air is captured by the front air filter 17 and the upper air filter 20. The room air from which dust has been removed by the front air filter 17 passes through a pair of electrostatic precipitators 22 constituting the air cleaning unit 18, and finer dust is electrically collected and deodorized.

The cleaned indoor air flows through the heat exchanger 8 and performs a heat exchange action with the refrigerant led to the room air. After that, the heat exchange air is guided along the blowout ventilation path 15, guided from the blowout opening 6 to the blowout louvers 7a and 7b and blown into the room, and the efficient air conditioning operation is continued.
The user selects the “air filter cleaning mode” by operating the remote control (remote control panel), or after the air-conditioning operation is completed every predetermined period, or a preset time, or a predetermined time zone, etc. In addition, the “air filter cleaning mode” is automatically performed.
With the selection of the air filter cleaning mode, the control unit sends drive signals to the first drive motor 46, the second drive motor 47, and the third drive motor 48 in the drive unit. Initially, the front moving mechanism 52 constituting the filter moving mechanism is driven, and at the same time, the brush driving mechanism is activated. A drive signal is sent to the fourth drive motor 49 at the end of selection of the air filter cleaning mode, and the switching mechanism 61 connected to the fourth drive motor 49 changes the gear D to the front gear Ff. Is switched to the position where it meshes.

Specifically, as shown in FIG. 17A, the drive arm 64 of the switching mechanism 61 is generally urged to move in the direction of the arrow (left side) in the figure, and the gear D is meshed with the gear C. Is maintained in mesh with the front gear Ff.
In this state, the pair of gears E are driven to rotate in the same direction by driving the first and second drive motors 46 and 47. The gear B rotates through the gear E, and the rotational force is transmitted from the gear A meshing with the gear B to the gear C. Then, the rotational force is transmitted from the gear C to the front gear Ff via the gear D, and the support shaft 75a that supports the front gear Ff rotates. The support shaft 75a is provided with a front air filter drive gear 76, and the front air filter 17 is pressed against the front guide 80 from the upper surface side and meshed with the rack 78 of the central reinforcing bar a.

  If each front air filter drive gear 76 rotates, the divided front air filters 17 will certainly start moving by the same amount at the same time. Each divided front air filter 17 gradually comes out of the air filter housing portion 16b on the front surface side, and both side portions are guided by the guide portions of the frame assembly 16 and moved upward. At this time, the seal drive cam 71 constituting the lift mechanism 45 is separated from the seal guide mechanism 74, the seal guide mechanism 74 is folded flat, the seal member 34 is in the lowered position, and the opening of the dust box 32. 33 is open.

Therefore, the front air filter 17 is inserted through a gap formed between the lower end of the dust box 32 and the seal member 34. At the same time, the brush drive mechanism is activated, and the rotary brush 30 is rotationally driven in the clockwise direction shown in FIGS. The front air filter 17 faces the rotating brush 30 sequentially from the upper end to the lower end side, and moves upward while sliding.
The dust adhering to the front air filter 17 is smoothly and reliably scraped off and removed by the rotating brush 30. That is, since the rotary brush 30 is also divided into left and right with respect to the front air filter 17 divided into left and right, the variation in contact with each divided front air filter 17 is reduced, and dust is scraped off. The effect can be enhanced.

And the rotating brush 30 divided | segmented into right and left is unified, and is rotationally driven integrally. With respect to the divided front air filter 17, the two front air filter drive gears 76 constituting the front moving mechanism 52 are provided on one spindle 75a and rotate at the same time. The partial air filter 17 can be moved simultaneously and simultaneously by the same amount.
Dust is transferred from the front air filter 17 to the rotating brush 30. Immediately after this, the rotating brush 30 passes in contact with the scraping projection 35. Since the scraping projection 35 is formed in a comb-like shape, the dust transferred to the rotating brush is scraped off and falls into the dust receiving passage 31. The dust receiving passage 31 has a sealed structure except that a portion facing the rotating brush 30 is open, and thus the scraped dust is not scattered from the dust receiving passage 31 to the periphery.

  Immediately after the front air filter 17 from which the adhering dust has been removed has come out of the contact portion of the rotary brush 30 of the dust box 32, the upper edge of the front air filter 17 is aligned with the upper guide 85 and the corner of the dust box 32. Led to the gap. Since the gap is set and held accurately and uniformly by the gap holder 82, the front air filter 17 passes through the gap.

  When the front air filter 17 passes through the gap, the central reinforcing bar a is in sliding contact with the filter guide 88 constituting the upper guide 85. Specifically, the central reinforcing bar a slides while being fitted in a guide flange t provided in the filter guide 88. In addition, since the front air filter 18 is guided on both sides along the guide portions provided in the frame assembly 16, it moves upward while maintaining the correct posture without tilting in the width direction.

  Eventually, each front air filter 17 is inserted into an upper air filter storage portion 16c provided in the frame assembly 16 and storing the upper air filter 20 while dust is removed by the rotating brush 30. That is, the front air filter 17 is guided on the upper side of the upper air filter 20 so as to face each other with a narrow gap therebetween. When the upper end of the front air filter 17 is inserted into the rear end of the air filter housing portion 16c on the upper surface side, the control unit controls the first and second drive motors 46 and 47 to temporarily stop.

  Accordingly, each front air filter 17 moves forward, and dust is removed over the entire surface by the air filter cleaning unit S during that time. And it accommodates in the air filter accommodating part 16c of an upper surface side facing the upper air filter 20. FIG. In this state, the lower peripheral frame of the front air filter 17 is in the dust box 32, the central reinforcing bar a is pressed against the filter guide 88, and the meshing state of the rack 78 and the front air filter drive gear 76 is maintained. Yes.

  Next, the control unit sends a drive signal that rotates in the reverse direction to the first and second drive motors 46 and 47. The third drive motor 48 is controlled to increase the rotation speed, although the rotation direction does not change. Each gear constituting the gear train rotates in the direction opposite to the rotation direction described above, and the front moving mechanism 52 moves the divided front air filter 17 downward by the same amount simultaneously. It should be noted that the fourth drive motor is kept stopped.

Although all dust is removed from the front air filter 17 by the dust removing action, dust may remain on the front air filter 17 depending on conditions. Therefore, even when the front air filter 17 is moved downward, it is brought into sliding contact with the rotating brush 30, so that all remaining dust is reliably removed.
Since the rotating direction of the rotating brush 30 does not change, the dust transferred to the rotating brush 30 is peeled off from the rotating brush 30 by the scraping projection 35 and falls to the dust receiving passage 31. Also at this time, all the dust is collected in the dust receiving passage 31 and is not scattered around.

The front air filter 17 moves backward and returns from the air filter housing portion 16c on the upper surface side to the air filter housing portion 16b on the front surface side. Both side portions of the front air filter 17 are guided by the guide portions of the frame assembly 16 and smoothly move without tilting.
Eventually, the front air filter 17 completely returns to the original air filter housing portion 16b on the front side. The control unit that senses this state sends a stop signal to the first and second drive motors 46 and 47. In this way, the dust removing action on the front air filter 17 is completed.

  Next, the control unit sends a drive signal to the fourth drive motor 49 to operate the switching mechanism 61. That is, as shown in FIG. 17B from the state of FIG. 17A, the fourth drive motor 49 is driven to rotate and displace the drive lever 65 counterclockwise. The drive arm 64 connected to the drive lever 65 moves rightward in the drawing, and the gear D supported by the drive arm 64 meshes with the upper gear Fu while maintaining the meshing relationship with the gear C. Accordingly, the rotational driving force transmitted from the first and second drive motors 46 and 47 to the gear D is changed to be transmitted to the upper gear Fu.

  On the other hand, as the drive arm 64 moves, the gear arm 66 connected to the drive arm 64 rotates by a predetermined angle with the support shaft portion p as a fulcrum. The switching gear 69 that meshes with the inner tooth portion 68 of the gear arm 66 rotates, and the seal support shaft 70 and the seal drive cam 71 rotate. The cam portion q provided on the seal driving cam 71 is separated from the seal guide mechanism 74 until then, and the seal guide mechanism 74 is folded flat.

  While the seal driving cam 71 is rotating, the cam portion q comes into contact with the seal guide mechanism 74 and pushes up the seal member 34. However, the seal driving cam 71 continues to rotate, and the cam portion q again returns to the seal guide mechanism 74. Separate from. Therefore, the seal guide mechanism 74 is again folded flat, and the seal member 34 is separated from the opening 33 of the dust box 32 again, and a gap is formed between them.

  The control unit sends drive signals to the first and second drive motors 46 and 47 and controls the third drive motor 48 to have the same rotational speed as when the upper air filter 20 is moved backward. Send drive signal. The upper moving mechanism 53 is activated, and the divided upper air filter 20 exits from the air filter housing portion 16c on the upper surface side and faces the front side of the front air filter 17 housed in the air filter housing portion 16b on the front surface side. The same amount is sent at the same time. On the way, the dust passes through the dust box 32 and is removed by the rotating brush 30.

  Similarly, the dust removed from the upper air filter 20 by the rotating brush 30 is surely collected in the dust receiving passage 31 and is not scattered around. The upper guide 85 presses the upper air filter 20 against the upper air filter drive gear 77 to ensure that the central reinforcing bar a is engaged with the rack 78. The front guide 17 and the guide part smoothly move and guide the upper air filter 20 without tilting.

  The forward movement in which the upper air filter 20 faces the air filter housing portion 16b on the front surface side housing the front air filter 17 and the front side of the front air filter 17 with a narrow gap therebetween is completed. In this state, the control unit controls the first and second drive motors 46 and 47 to temporarily stop. Then, the control unit sends reverse rotation drive signals to the first and second drive motors 46 and 47, and reversely drives all the gears constituting the gear train and the upper air filter drive gear 77 to perform the upper air filter. Make a backward movement that raises 20.

A drive signal is sent to the third drive motor 48, and the stop state is continued for the fourth drive motor 49. Since the rotating brush 30 rotates in the clockwise direction, which is the opposite direction, to the upper air filter 20 that moves up this time, even if dust remains in the upper air filter 20, these are surely removed. To do.
Also at this time, the upper air filter 20 is guided by the front guide 80 and the guide portion of the frame assembly 16, and moves smoothly without being inclined. When the upper air filter 20 returns to the air filter housing portion 16c on the upper surface side again, the control unit sends a stop signal to the first and second drive motors 46 and 47 and the third drive motor 48. Here, the dust removing action on the entire upper air filter 20 is completed.

As described above, the front air filter 17 is first reciprocated to completely remove dust, and then the upper air filter 20 is reciprocated to completely remove dust. However, the present invention is not limited to this. It is not something. First, dust may be removed from the upper air filter 20, and then dust may be removed from the front air filter 17.
That is, either one of the air filters is reciprocated with respect to the air filter cleaning unit S to remove adhering dust, and then the other air filter is reciprocated with respect to the air filter cleaning unit S to be adhered. Remove dust. Or the sensor which detects the dust adhesion amount in the front air filter 17 and the upper air filter 20 is provided, and you may make it make dust removal action only with respect to an air filter with much dust adhesion amount.

  When the cleaning operation for the divided front air filter 17 and upper air filter 20 is completed, the control unit sends a drive signal to the fourth drive motor 49 to operate the lift mechanism 45. That is, the fourth drive motor 49 is rotated in the reverse direction from the state shown in FIG. 17B, and a part of the drive arm 64 turns on the microswitch 67 as shown in FIG. When receiving the signal, the control unit stops the fourth drive motor 49.

  The gear D supported by the drive arm 64 is separated from the upper gear Ff to cancel the meshing relationship, and is also separated from the lower gear Fu and is not in meshing relationship. The gear D is located at an intermediate portion between the upper gear Fu and the front gear Ff, and is in meshing relationship with only the gear C. The gear arm 66 connected to the drive arm 64 is in a substantially vertical position, and the cam portion q of the seal drive cam 71 provided on the seal support shaft 70 is also in a substantially vertical position.

As shown in FIG. 13 again, the seal guide mechanism 74 rises due to the cam portion q, and the seal member 34 attached to the seal base 73 is urged upward and comes into close contact with the lower surface of the dust box 32. Accordingly, the opening 33 provided on the lower surface of the dust box 32 is completely closed by the seal member 34.
Next, the control unit sends a drive signal to the ventilation fan 99 after selecting the ventilation damper fully closed mode for the ventilation unit 11. Along with the rotation of the ventilation fan 99, negative pressure is applied to the dust discharge path 94 of the dust guide case 95, and the wind damper 96 provided here is opened. Therefore, the negative pressure acts on the air filter cleaning unit S from the dust guide case 95 through the connection hose 42 and the discharge box 41.

Specifically, negative pressure is applied to the dust receiving passage 31 by the rotational drive of the ventilation fan 99 through the dust discharge cover 40 covered by the discharge box 41, and the dust collected in the dust receiving passage 31 is sucked. The
Since one end of the dust receiving passage 31 communicates with the air introduction hole 39 provided at the end of the box case 32a, the air around the dust box 32 is forced from the air introduction hole 39 to the dust receiving passage 31. Sucked. Therefore, the dust collected in the dust receiving passage 31 is also scraped out by the sucked air, and comes out of the dust box 32 and guided to the connection hose 42.

In addition, the material selection and surface treatment of the dust box 32 itself are made, and the conditions for allowing the dust to easily pass through all of the configuration of the dust receiving passage 31 have been adjusted, so that the dust does not stay in the dust receiving passage 31, It is quickly and reliably discharged and sucked from the connection hose 42 to the ventilation unit 11.
The dust introduced from the connection hose 42 through the connection port 91 of the dust guide case 95, the dust discharge path 94 opened by the wind damper 96 and the mounting hole 93 of the fan casing 90 is contained in the fan casing 90. It moves along the peripheral surface and is discharged to the outside from the exhaust port 90a.

The distance between the fan casing 90 and the peripheral wall of the ventilation fan 99 is such that the mounting hole 93 and the exhaust port 90a are farthest away from other parts, and are collected in the dust receiving passage 31 here. The dust that has been done is guided. Therefore, the amount of dust adhering to the leading edge of the ventilation fan 99 can be suppressed, and the cleanliness of the ventilation fan 99 can be maintained over a long period of time.
As described above, the frame assembly 16 including the front air filter 17 and the upper air filter 20 and the air cleaning unit 18 can be attached to the existing indoor unit main body 1 here. Some types do not have a ventilation unit 11 in the machine. In this case, a dust box 32 that does not have an air introduction hole on one side portion of the dust box 32 constituting the air filter cleaning unit S and is not provided with a dust discharge cover on the other side portion is attached.

  Even with such an air filter cleaning unit, dust adhering to the front air filter 17 and the upper air filter 20 can be reliably removed and collected in the dust receiving passage 31. And a user opens the front panel 2 for every predetermined period, exposes the air filter cleaning unit S, and removes it. Since the air filter cleaning unit S is detachably attached to the air filter cleaning unit attachment portion 16d of the frame assembly 16, the removal work can be easily performed.

In this state, dust remains collected in the dust receiving passage 31, and the box case 32a and the box cover 32b constituting the dust box 32 are combined to form a substantially sealed structure. The dust will not scatter or fall around.
If the air filter cleaning unit S is placed in a low place and the box cover 32b is opened from the box case 32a, it can be confirmed that dust is collected in the dust receiving passage 31 in the box case 32a. It may be removed by suction.

That is, an air conditioner having an air filter automatic cleaning function can be configured by attaching the above-described frame assembly 16 to an indoor unit that has been used conventionally, and the air conditioner can be shared.
As described above, according to the present invention, the front air filter 17 and the upper air filter 20 that face the front inlet 4 and the upper inlet 5 of the indoor unit body 1 are configured separately from each other. Then, one air filter, for example, the front air filter 17 is reciprocated with respect to the air filter cleaning unit S to remove the adhering dust, and then the other air filter, for example, the upper air filter 20 is reciprocated. And dust was removed.

  Therefore, the amount of movement of the front and upper air filters 17 and 20 during dust removal is halved compared to the one with a single-type air filter facing both the front and top suction ports in the prior art. As a result, the dust removal time is shortened by half and the workability is improved. Further, only one of the cleaning operations can be performed according to the degree of dust adhesion. Since the movement position of each air filter is the same as the arrangement position of the other air filter, it is not particularly necessary to secure a space at the movement destination.

Since each air filter moves in the state which cross | intersected in the air filter cleaning unit S, and does not protrude outside from the indoor unit main body 1, the improvement of aesthetics can be obtained. The structure of the air filter and the air filter cleaning unit can be simplified as compared with the method of winding the air filter around the shaft as in the prior art. Miniaturization and simplification can be achieved, and durability and reliability can be improved.
Since the dust adhering to both air filters 17 and 20 is removed by one rotating brush 30 constituting the dust removing means provided in the air filter cleaning unit S, the air filter cleaning unit S is made compact and the arrangement space is reduced. Don't take it.
Since the dust collected in the air filter cleaning unit S is discharged to the outside using the ventilation unit 11 which is an intake / exhaust device, it is possible to save time and effort. At this time, since the opening 33 formed in the dust box 32 is closed by the seal member 34, there is no air leakage in the dust receiving passage 31, and the suction action against dust is extremely effective.

Further, according to the present invention, the frame assembly 16 is attached to the front surface of the heat exchanger 8, the air filter cleaning unit S is provided at the center of the frame assembly 16, the front air filter 17 is provided on the front surface, and the upper air filter 20 is provided on the upper surface. Arranged. The air filter cleaning unit S and each of the air filters 17 and 20 can be accurately installed at predetermined positions in the indoor unit main body 1, variation due to products can be suppressed, and the operation of the air filter cleaning unit S can always be performed accurately.
In addition, by installing the frame assembly 16 without changing the arrangement and structure of the heat exchanger 8 and the blower 10 in the conventional indoor unit body, an air conditioner having an air filter automatic cleaning function can be configured. It can provide a highly versatile air conditioner.
Further, the frame assembly 16 includes a front filter 17 on the front surface, a front side air filter storage portion 16b for storing the moved upper air filter 20, and an upper air filter 20 on the upper surface. An upper surface side air filter storage portion 16c for storing the moved front air filter 17 was provided. In addition, the front side air filter accommodating part 16b was provided in the front side of the air purifying unit accommodating part 16a which arrange | positions the air purifying unit 18 which is a secondary air filter.

Therefore, unlike the conventional indoor unit, it is not necessary to provide separate mounting frames for the air filter and the air cleaning unit on the front surface of the heat exchanger, and the productivity of the air conditioner can be improved. The front air filter 17 is disposed in a moving space formed between the front panel 2 and the air purification unit 18, and the contact surface between the front panel 2 and the air purification unit 18 is the press of the front air filter 17. , Act as a guide when moving.
Since the dust box 32 is detachably attached to the center of the frame assembly 16, the dust box 32 can be easily cleaned and inspected. Since the air filter cleaning unit S and the driving unit 25 for driving the front and upper moving mechanisms 52 and 53 are attached to the side surface of the frame assembly 16, power transmission can be performed reliably.

Since the dust box 32 and the seal member 34 are installed at the center of the frame assembly 16, the opening 33 and the seal member 34 through which the rotary brush 30 is exposed can be fixed at predetermined positions, and dimensional errors due to products can be suppressed. Accordingly, the opening 33 can be reliably sealed and air leakage can be prevented, so that the dust can be reliably moved during the dust discharging operation.
By simply attaching the dust box 32 to the frame assembly 16, the dust receiving passage 31 and the ventilation unit 11 (that is, the intake / exhaust device) can be connected, and the dust can be reliably discharged to the outside.
Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

The schematic longitudinal cross-sectional view of the indoor unit in the air conditioner based on Embodiment in this invention. The front view of the indoor unit which removed the front panel based on the embodiment. The perspective view of the frame assembly based on the embodiment. Sectional drawing of the frame assembly based on the embodiment. The perspective view which made the cross section the air filter cleaning unit based on the embodiment, and its vicinity site | part. The longitudinal cross-sectional view of the same site | part as FIG. 5 based on the embodiment. The perspective view inside a box case based on the embodiment. The internal perspective view of the dust box based on the embodiment. The perspective view which shows the connection structure of the rotating brush based on the embodiment, and the perspective view of a dust box side part. The one side part perspective view of a set dust box in the indoor unit main body based on the embodiment, and the other side part perspective view of the dust box attached to the frame assembly. The perspective view which abbreviate | omitted a part of drive part based on the embodiment. The perspective view of the gear train which comprises the gear assembly based on the embodiment. The partial perspective view of a part of gear train and a lift mechanism based on the embodiment. The perspective view of an air filter cleaning unit part and ventilation unit based on the embodiment. The partial perspective view inside a ventilation unit based on the embodiment. The perspective view which removed the cover of the ventilation unit based on the embodiment. The figure explaining the action | operation of the gear train based on the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 8 ... Heat exchanger, 10 ... Blower, 1 ... Indoor unit body, 2 ... Front panel, 4 ... Front suction port, 5 ... Top suction port, 17 ... Front air filter, 20 ... Upper air filter, 30 ... Rotating brush (Dust removing means), 31 ... dust receiving passage (dust receiving portion), S ... air filter cleaning unit, 16 ... frame assembly, 16a ... air cleaning unit housing, 16b ... air filter housing on the front side , 16c ... Air filter housing on the upper surface side, 32 ... Dust box, 34 ... Seal member, 52 ... Front movement mechanism, 53 ... Upper movement mechanism, 25 ... Drive part, 33 ... Opening, 11 ... Ventilation unit (intake and exhaust) apparatus).

Claims (6)

Opposite the suction side of the heat exchanger of the indoor unit body that houses the heat exchanger and blower inside, there are provided a vertical frame on both the left and right sides and a frame with a horizontal frame built between the both sides A frame assembly that forms an opening therebetween,
An air filter is movably disposed in the frame assembly, and a dust removing means for removing dust attached to the air filter and an air filter cleaning unit including a dust receiving portion for collecting the removed dust are attached,
An indoor unit of an air conditioner, wherein the air filter is configured to reciprocate through the air filter cleaning unit. An indoor unit main body that houses a heat exchanger and a blower inside, a front panel that covers the front surface of the indoor unit main body, and a front suction port and a top suction port that are respectively opposed to the front and top surfaces of the heat exchanger In the indoor unit of an air conditioner equipped with
A front air filter and an upper air filter that are divided and formed to face the front suction port and the upper surface suction port, respectively, and are movably disposed;
An air filter provided with a dust removing means for removing dust adhering to the moving front air filter and the upper air filter, and a dust receiving portion for collecting the removed dust, which is provided across the width direction of the indoor unit main body. A cleaning unit;
A frame assembly that is mounted from the front to the top of the heat exchanger, and has frame bodies on the left and right sides, upper and lower ends, and the center, with the opening therebetween facing the front suction port and the top suction port. And
The air filter cleaning unit is installed over the entire length in the width direction at the center between the front suction port and the upper surface suction port of the frame assembly.
A front air filter is disposed on the front surface of the frame assembly, an upper air filter is disposed on the upper surface, and the front air filter is reciprocated between the upper air filter installation position via the air filter cleaning unit, An indoor unit of an air conditioner, wherein the upper air filter is configured to reciprocate between a front air filter installation position via an air filter cleaning unit. The frame assembly is
An air purifying unit storing part for storing the air purifying unit and a front air filter storing part for storing the front air filter and storing the upper air filter that has been moved,
2. The indoor unit of an air conditioner according to claim 1, further comprising an upper air filter housing portion that houses the upper air filter disposed on the upper surface portion and accommodates the front air filter that has moved. The air filter cleaning unit includes a dust box provided with the dust removing means and a dust receiving portion,
The indoor unit of an air conditioner according to claim 1, wherein the dust box can be pulled forward from the frame assembly by opening the front panel. The air filter cleaning unit
The dust removing means is accommodated, and an opening is provided for exposing the dust removing means to the moving part of the front air filter and the upper air filter. The dust receiving part is provided adjacent to the dust removing means. Dust box,
A seal member for closing the opening of the dust box after completion of the dust removal operation for the front air filter and the upper air filter;
In the frame assembly, a seal member is installed so as to be movable in the vertical direction, and the dust box is disposed above the seal member.
A front moving mechanism for reciprocating the front air filter between the front air inlet and the upper air inlet of the frame assembly and the upper air filter installation position, and the upper air filter as the front air filter installation position. An upper movement mechanism that reciprocates between
2. The indoor unit of an air conditioner according to claim 1, wherein a drive unit for driving the front moving mechanism and the upper moving mechanism is attached to a side surface portion of the frame assembly. An indoor unit main body that houses a heat exchanger and a blower inside, a front panel that covers the front surface of the indoor unit main body, and a front suction port and a top suction port that are respectively opposed to the front and top surfaces of the heat exchanger In the indoor unit of an air conditioner equipped with
A front air filter and an upper air filter that are separately formed facing the front suction port and the upper surface suction port, and are movably installed;
A dust removing means that is disposed across the width direction between the front suction port and the upper suction port and removes dust attached to each air filter as each air filter moves. An opening that exposes the air filter to the moving part of the air filter, a dust box that is provided adjacent to the dust removing means and collects dust, and an opening of the dust box after completion of the dust removing operation for each air filter An air filter cleaning unit including a seal member for closing the part;
A front movement mechanism for reciprocating the front air filter with respect to the upper air filter installation position; and an upper movement mechanism for reciprocating the upper air filter with respect to the front air filter installation position;
An air intake / exhaust device that is disposed on one side of the indoor unit main body and sucks and collects dust collected in a dust receiving portion of the dust box to the outside;
A frame assembly that is mounted from the front side to the upper side of the heat exchanger, forms a frame at the left and right sides, the upper and lower ends, and the central part, and the opening therebetween is opposed to the front inlet and the upper inlet. Comprising
A seal member of the air filter cleaning unit is arranged in the center of the frame assembly so as to be movable up and down in the width direction, and a dust box is detachably arranged on the upper part of the seal member. An indoor unit of an air conditioner, wherein an intake / exhaust device is connected via a frame assembly.

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