WO2012172727A1

WO2012172727A1 - Air conditioner

Info

Publication number: WO2012172727A1
Application number: PCT/JP2012/003222
Authority: WO
Inventors: 智貴森川; 杉尾　孝; 井上　雄二
Original assignee: パナソニック株式会社
Priority date: 2011-06-17
Filing date: 2012-05-17
Publication date: 2012-12-20
Also published as: JP2013002747A; CN103608627B; JP4947224B1; CN103608627A

Abstract

An air conditioner for which the oscillation fulcrum of an up/down breeze direction changing vane (12), which is provided in an indoor unit and which shifts the direction of air discharged from a discharge port up/down, is arranged on the approximate extended line of the rotary shaft (47) of a left/right breeze direction changing vane (14), which shifts the direction of air discharged from the discharge port to the left/right. Thus, the rotational axis position of the up/down breeze direction changing vane (12) and the rotary shaft (47) of the left/right breeze direction changing vane (14) are arranged with an appropriate positional relationship, enlarging the surface area of the left/right breeze direction changing vane (14) and improving the left/right breeze direction changing capability.

Description

Air conditioner

The present invention relates to an air conditioner including an indoor unit provided with a wind direction changing blade for changing the direction of air blown out from a blowout port, and controlling the wind direction changing blade to perform air conditioning operation, particularly air blown out from the blowout port. The positional relationship between the swing fulcrum of the up and down wind direction changing blade that changes the direction of up and down, and the rotational axis of the left and right wind direction changing blade that changes the air direction to the left and right.

The conventional air conditioner is provided with a wind direction changing blade that changes the direction of the air blown out from the outlet of the indoor unit. The wind direction changing blade is configured of a vertical wind direction changing blade that changes the direction of the air blown out from the air outlet up and down, and a left and right wind direction changing blade that changes the direction of the air blown out from the air outlet to the left and right.

The left and right wind direction changing blades are usually composed of a plurality of blades. When the air conditioner is stopped, the left and right air direction changing blades are covered with the up and down air direction changing blades or the like and accommodated in the indoor unit body. On the other hand, during operation of the air conditioner, the left and right wind direction changing blades are inclined at a desired angle by the remote control (remote control device) that controls the indoor unit, and change the wind blown out from the air outlet to the left and right .

In addition, it has also been proposed that winds blown out from the air outlet can be delivered to a wide area of a room by independently controlling a plurality of blades constituting the left and right wind direction changing blades for each pair of left and right blades. (See, for example, Patent Document 1).

Unexamined-Japanese-Patent No. 5-79690

When the air conditioner is stopped, for the purpose of aesthetics, the left and right wind direction changing blades need to be covered with the up and down wind direction changing blades and housed in the indoor unit body. Therefore, in general, the axis of the left and right wind direction changing blade is disposed on the windward side of the swing fulcrum (drive shaft) of the up and down wind direction changing blade.

During operation of the air conditioner, even when the left and right wind direction changing blades and the up and down wind direction changing blades are driven independently of each other, it is necessary to prevent both from interfering with each other. Therefore, it is necessary to reduce the shape of the left and right wind direction changing blades so as not to enter the path of the up and down wind direction changing blades. As a result, there arises a problem that the changing performance of the left and right wind directions is reduced.

The present invention has been made in view of these problems of the prior art, and by arranging the pivot point of the up and down wind direction changing blades and the rotation axis of the left and right wind direction changing blades in an appropriate positional relationship, An object of the present invention is to provide an air conditioner capable of improving the wind direction changing performance by securing the area of the wind direction changing blade.

In order to achieve the above object, the present invention provides an indoor unit with a fan for taking in and blowing out room air, and a wind direction changing blade for changing the direction of air blown out from the outlet, and controlling the wind direction changing blade An air conditioner for performing air conditioning operation, wherein the wind direction changing blade changes the direction of the air blown out from the outlet up and down, and the direction of the air blown out from the outlet The swing fulcrum of the up and down wind direction changing vanes is disposed on a substantially extended line of the rotation axis of the left and right wind direction changing vanes.

In the air conditioner according to the present invention, since the swing fulcrum of the up and down wind direction changing blade is disposed on the substantially extension of the rotation axis of the left and right wind direction changing blade, the area of the left and right wind direction changing blade is secured to improve the wind direction changing performance. It can be done.

These aspects and features of the present invention will become apparent from the following description in connection with the preferred embodiments of the attached drawings.

Longitudinal sectional view of the indoor unit constituting the air conditioner according to the present invention in the depth direction Schematic of the indoor unit of FIG. 1 Enlarged view of the air outlet of the indoor unit in FIG. 1 Enlarged view of the air outlet of the indoor unit in FIG. 1 Sectional view along line III-III in FIG. 2A Sectional view along line IV-IV in FIG. 2A Sectional view along line III-III in FIG. 2A when the side walls of the blowout are expanding toward the downstream side Sectional view along line IV-IV in FIG. 2A when the side walls of the blowout are expanding toward the downstream side Enlarged view of upper and lower blades when the air conditioner stops Schematic of the indoor unit during operation of the air conditioner Schematic of the indoor unit when the air conditioner stops Sectional view along line XX of FIG. 8 Sectional view along line XI-XI of FIG. 9 Graph showing left and right change performance of left and right blades Another graph showing left and right change performance of left and right blades Enlarged view of left and right side walls combining multiple straight parts and multiple arc shapes Front view of the indoor unit having the side wall of FIG. Front view of the indoor unit when the side wall is formed in one arc shape Front view of the indoor unit when the side wall is formed in one linear shape (A) Enlarged view of the left and right wind direction changing blade (b) Enlarged view of the left and right wind direction changing blade

In the air conditioner according to the embodiment of the present invention, the indoor unit is provided with a fan for taking in and blowing out indoor air, and a wind direction changing blade for changing the direction of air blown out from the blowout port. An air conditioner that performs air conditioning by controlling the air conditioning operation, wherein the wind direction changing blade vertically changes the direction of the air blown out from the outlet and the direction of the air blown out from the outlet. The swing fulcrum point of the up and down wind direction changing vanes is disposed on a substantially extended line of the rotation axis of the left and right wind direction changing vanes.

As described above, since the swing fulcrum (drive shaft) of the up and down wind direction changing blades is disposed on the substantially extension line of the rotation axis of the left and right wind direction changing blades, interference with the up and down wind direction changing blades when the left and right wind direction changing blades rotate. As a result, the area of the left and right wind direction changing blades can be secured, and as a result, the blown air can be changed with the left and right wind direction changing blades without leakage, and the changing performance can be improved.

In addition, the swing fulcrum of the up and down wind direction changing blades is disposed in the vicinity of the wind upper end during operation of the up and down wind direction changing blades, whereby the air outlet is operated (when the up and down air direction changing blades are opened). Since the portion entering the windward side in the inside is small, not only the resistance to the blown air can be reduced, but also the area of the left and right wind direction changing blades can be secured, and as a result, the left and right wind direction changing performance can be improved.

Furthermore, the left and right wind direction changing blades are formed with a concave shape that prevents interference with the up and down wind direction changing blades during operation, so that the area of the left and right wind direction changing blades is avoided while avoiding the trajectory of the up and down wind direction changing blades during operation. It becomes possible to secure.

In addition, the concave shape has a larger inclination angle with respect to the base of the concave shape on the leeward side than the windward side, thereby securing the area on the windward side that greatly affects the wind direction changing performance, and the design of the left and right wind direction changing blades Can be enhanced.

Furthermore, since the connecting bar connecting the plurality of blades constituting the left and right wind direction changing blades is disposed on the leeward side with respect to the rotation axis of the left and right wind direction changing blades, a decrease in air blowing performance can be suppressed. Leading to a reduction in

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

An air conditioner used in a general household is usually composed of an outdoor unit and an indoor unit mutually connected by refrigerant pipes, and FIG. 1 shows the indoor unit of the air conditioner according to the present invention.

The indoor unit has the indoor unit main body 2 and a movable front panel (hereinafter simply referred to as a front panel) 4 capable of opening and closing the front opening 2a of the indoor unit main body 2. While the panel 4 is in close contact with the indoor unit body 2 and closes the front opening 2a, during operation of the air conditioner, the front panel 4 moves in a direction away from the indoor unit main body 2 and the front opening 2a Open In addition, FIG. 1 has shown the state which the front panel 4 closed the front opening part 2a.

Further, the indoor heat exchanger 6, the room air taken in from the front opening 2 a and the upper opening 2 b inside the indoor unit main body 2 is heat exchanged by the indoor heat exchanger 6 and blown out into the room. A fan 8 and an up / down air direction changing blade (hereinafter, simply referred to as “upper and lower blades”) 12 for opening and closing the air outlet 10 for blowing out heat-exchanged air into the room and changing the air blowing direction up and down Left and right wind direction changing blades (hereinafter referred to simply as "left and right blades") 14 for changing the left and right to the left and right, and between the front opening 2a and the top opening 2b and the indoor heat exchanger 6 A filter 16 is provided for removing dust contained in the room air taken in from the portion 2a and the top opening 2b.

The upper and lower wind direction changing blade 12 is provided with a lower blade 18 for opening and closing the blowout port 10 and an upper blade provided above the lower blade 18 and controlling the blowout direction of air blown out from the blowout port 10 in cooperation with the lower blade 18. It consists of 20 and. The lower blade 18 is connected to the drive shaft 22, while the upper blade 20 is connected to the drive shaft 24, and the

drive shafts

22 and 24 are connected to a drive source (not shown) such as a drive motor.

As shown in FIGS. 10 and 11, the left and right wind direction changing blades 14 are configured by a pair of blades 14a located on the left side and a pair of blades 14b located on the right side when viewed from the front of the indoor unit, One set of

blades

14a or 14b is composed of a plurality of (for example, four) blades intervened by the

connecting bars

15 and 15b. Further, each set of

blades

14 a and 14 b is connected to a separate drive source (for example, a drive motor) 26 and controlled independently by the drive source 26.

When the air conditioner starts operation, the up and down wind direction changing blades 12 are controlled to open and the air outlet 10 is opened, and the indoor fan 8 is driven so that the indoor air passes through the front opening 2a and the top opening 2b. It is incorporated into the interior of the indoor unit. The introduced indoor air exchanges heat with the indoor heat exchanger 6, passes through the indoor fan 8, passes through the air passage 28 formed on the downstream side of the indoor fan 8, and is blown out from the outlet 10.

Further, the blowing direction of the air from the blowout port 10 is controlled by the up and down wind direction changing vanes 12 and the left and right wind direction changing vanes 14, and the vertical angle of the up and down wind direction changing vanes 12 and the left and right direction angle of the left and right wind direction changing vanes 14 , It controls by the remote control (remote control apparatus) which controls an indoor unit.

Further, the air passage 28 located on the upstream side of the air outlet 10 is a rear guider 30 which is a rear wall of the air passage 28 located on the downstream side of the indoor fan 8 and the air passage located on the downstream side of the fan and facing the rear guider 30. It is formed of a stabilizer 32 which is a front wall of the passage 28 and both side walls 34 (see FIG. 3) of the indoor unit body 2.

The term “stabilizer” described above is located near the downstream of the indoor fan 8 and is a stabilizer that stabilizes the vortices generated near the front of the indoor fan 8, and the indoor fan 8 located downstream of the stabilizer. It can also be divided into the front wall portion of the diffuser responsible for pressure recovery of the air being transported, but in the present specification, these are collectively referred to as "stabilizers".

Further, although the front panel 4 has been described as movable, it may be fixed.

<Shape of up and down wind direction changing blade 12>
Here, the shape of the up and down wind direction changing blade 12 will be described in detail.

2A shows a schematic view of the indoor unit shown in FIG. 1, FIG. 3 is a cross-sectional view along line III-III in FIG. 2A, and FIG. 4 is a cross-sectional view along line IV-IV in FIG. It is.

FIG. 3 is a view of the upper blade 20 as viewed from the front of the indoor unit when the lower blade 18 opens the air outlet 10. When the air conditioner is stopped, the upper blade 20 has a substantially T shape as viewed from the front. It is

That is, the width of the upper blade 20 is not constant, and the narrow portion 20a connected to the drive shaft 24 and located between the side walls 34 of the indoor unit body 2 (the outlet 10) and the narrow portion when the air conditioner stops A wide portion 20 b is disposed above the air outlet 10 and covers the indoor unit body 2 above the air outlet 10. The lateral width (length in the left-right direction) of the narrow portion 20 a is set to be slightly shorter than the lateral width of the blower outlet 10, and the lateral width of the wide portion 20 b is set to be longer than the lateral width of the blower outlet 10.

Similarly, the width of the lower blade 18 is not constant, and the narrow portion 18a connected to the drive shaft 22 and located between the side walls 34 of the indoor unit body 2 (the outlet 10) and the outlet when the air conditioner stops And a wide portion 18 b covering the portion 10. The lateral width (length in the left-right direction) of the narrow portion 18 a is set to be slightly shorter than the lateral width of the air outlet 10, and the lateral width of the wide portion 18 b is set longer than the lateral width of the air outlet 10.

In FIGS. 1 and 3, the lower blade 18 is configured to cover all the outlets 10 when the air conditioner is stopped, but it is not necessary to cover all the outlets 10. It can also be configured to cover a portion of the

Here, when the air conditioner is stopped, the front face of the lower blade 18 and the upper blade 20 in a state in which the blowout port 10 is covered by the lower blade 18 and the indoor unit main body 2 above the blowout port 10 is covered by the upper blade 20 When the upper and lower wind direction changing blades 12 are open during operation of the air conditioner, the width (

portions

18b and 20b) of the lower blade 18 and the upper blade 20 (the

wide portions

18b and 20b) projects in front of the design surface. It will be expanded from the width | variety of the site | part (width

narrow part

18a, 20a) inside a surface.

By setting in this manner, the blowout air is sandwiched between the up and down wind direction changing blades 12 (the lower blades 18 and the upper blades 20) and the left and right side walls 34 inside the blowout port 10 and is changed without leaking While the air is blown out from the blowout port 10, even if the blowout air changed to the left and right is blown out further to the left and right from the left and right end portions of the blowout port 10 outside the blowout port 10, The vertical and horizontal change directions can be maintained without being diffused by the vertical wind direction change vanes 12 extended to the outside of the side wall 34.

The longer the horizontal width of the up and down wind direction changing blades 12 is, the larger the effect of maintaining the upward and downward change direction of the blowing wind, but in consideration of the design of the indoor unit, the width of the

wide portions

18b and 20b is the width of the indoor unit main body 2 It is preferable to set approximately equal to.

Particularly at the time of heating, the air warmed in the interior of the indoor unit tends to rise upward from the outlet 10, but this movement is controlled by the upper blade 20, and the lateral width of the upper blade 20 is further expanded. , The upward leak of warm air is prevented.

3 and 4 show the case where the left and right side walls 34 of the blower outlet 10 to which the

drive shafts

22 and 24 of the up and down wind direction changing blades 12 are attached are substantially parallel to each other. As described above, when the diffuser is formed such that the left and right side walls 34 of the air outlet 10 expand linearly or curvilinearly toward the downstream side, the diffuser of the side wall 34 and the left and right of the up and down wind direction changing vanes 12 are The width of the narrow portion 18a of the lower blade 18 and the narrow portion 20a of the upper blade 20 are gradually longer toward the downstream side so that the gap between the end and the end does not expand toward the downstream side. It is set.

By setting the shape in this way, when the blow-off wind changed left and right by the left and right wind direction changing blades 14 is blown out left and right along the diffuser of the side wall 34, from the gap between the up and down wind direction changing blades 12 and the side wall 34 Leakage to the upper or lower side can be reduced, and the up-down or left-right changing performance can be improved.

Further, as shown in FIG. 1, when the air conditioner is stopped, the length in the depth direction of the lower blade 18 and the upper blade 20 is made longer so that the lower blade 18 and a part in the depth direction of the upper blade 20 overlap. By doing this, the upper and lower changing performance can be improved.

FIG. 7 is an enlarged view of the up and down wind direction changing blade 12 when the air conditioner is stopped. As shown in FIG. 7, on the outer surface of the narrow portion 20 a of the upper blade 20, the opposing portion (tip portion) of the lower blade 18 A recess 20c having a shape complementary to that of the above is formed, and when the air conditioner is stopped, the opposing portion of the lower blade 18 is disposed close to the recess 20c of the upper blade 20, thereby eliminating the step in the overlapping portion (design surface However, the appearance of the indoor unit when the air conditioner stops is improved.

<Shape of left and right wind direction change blade 14>
FIG. 8 shows a schematic view of the indoor unit during operation of the air conditioner, and FIG. 9 shows a schematic view of the indoor unit when the air conditioner is stopped. 10 is a cross-sectional view taken along line XX in FIG. 8, and FIG. 11 is a cross-sectional view taken along line XI-XI in FIG.

As shown in FIG. 8, the longitudinal wind changing blade 14 is set to have a length in the longitudinal direction longer than the length of the stabilizer 32, and the blowoff wind passing through the air passage 28 sandwiched between the rear guider 30 and the stabilizer 32. It is changed by the left and right wind direction changing blades 14 without leakage.

More specifically, in the cross section of FIG. 8, the downstream end of the stabilizer 32 is A, the upstream end is A ′, and the downstream end is viewed from the flow of air flowing through the air passage 28. Assuming that the distance from the portion A to the upstream end edge portion A ′ is L, the left and right wind direction changing blades 14 along the line parallel to the stabilizer 32 through the tip B when the left and right wind direction changing blades 14 face the front. The length (hereinafter simply referred to as “the length of the left and right wind direction changing blade 14”) is set to be longer than the length L of the rear guider 30, and as shown in FIG. 8 and FIG. The front end B of the frame projects forward from the design surface.

That is, as shown in FIG. 1 or FIG. 8, the end edge of the upper blade 20 on the swing fulcrum (drive shaft 24) side is disposed close to the downstream end edge A of the stabilizer 32 and the swing of the lower blade 18 is The end edge on the moving fulcrum (drive shaft 22) side is disposed close to the downstream end edge C of the rear guider 30, and when the two upper and lower wind direction changing blades 12 (upper blade 20 and lower blade 18) are opened In the state where the downstream end of the right and left wind direction changing blade 14 is brought close to the upstream end edge thereof, the blowout air passing through the air passage 28 sandwiched between the rear guider 30 and the stabilizer 32 is not leaked It can be made to pass between the two upper and lower wind direction changing blades 12, and can be changed downward while maintaining the left and right change state of the blowing wind.

FIG. 12 and FIG. 13 show the right / left changing performance of the left / right wind direction changing blade 14 and represents the ratio of the left / right changing angle of the blowing wind to the changing angle of the left / right wind direction changing blade 14.

As shown in the graph of FIG. 12, when the length of the left and right wind direction changing blade 14 is L / 3, L / 2, the left and right changing performance is 30% and 50%, respectively, and the length of the left and right wind direction changing blade 14 is In the case of L, the right / left changing performance is 90%, and it is understood that it is preferable to set the length of the left / right wind direction changing blade 14 longer than the length L of the rear guider 30. Note that L ′ shown in the graph of FIG. 12 indicates the length of the left and right wind direction changing blade 14 extending upstream from the upstream end edge A ′ of the stabilizer 32 (see FIG. 8), and the graph of FIG. These figures show that, even if the left and right wind direction changing blades 14 are extended upstream of the upstream end edge A ′ of the stabilizer 32, the right and left changing performance is not significantly improved.

Further, in the cross section of FIG. 8, when the downstream edge of the rear guider 30 is C when viewed from the flow of air flowing through the air passage 28, the horizontal axis of the graph of FIG. Side-to-side wind direction relative to the area of the air passage 28 along the blade surface of the left-to-right wind direction changing blade 14 surrounded by a straight line passing A and C and a straight line parallel to the straight line passing A and C through A ′. The ratio of the area of the change blade 14 (hereinafter simply referred to as "the area ratio of the left and right wind direction change blade 14") is shown, and when the area ratio of the left and right wind direction change blade 14 is 20% and 30%, the left and right change performance is When the area ratio of the left and right wind direction changing blades 14 is 70% at 30% and 50% respectively, the left and right changing performance is 90%, and the area ratio of the left and right wind direction changing blades 14 is set larger than 70%. It turns out that it is preferable.

In the present embodiment, when determining the shape of the left / right wind direction changing blade 14, the length in the depth direction of the left / right wind direction changing blade 14 is made as long as possible and does not interfere with surrounding members (rear guider 30, stabilizer 32 etc.) The area ratio of the left and right wind direction changing blades 14 is set to be larger than 70% by securing the minimum clearance of

2B and 2C are enlarged views of the vicinity of the outlet 10 during operation. As shown in FIG. 2B, in the present embodiment, the distance α between the extension line of the rotary shaft 47 of the left and right wind direction changing blade 14 and the rotational center of the drive shaft 22 of the lower blade 18 is about 5 mm on the leeward side. . When the lower blade 18 opens during operation of the air conditioner, the region on the windward side from the drive shaft 22 approaches the left and right wind direction changing blades 14, and thus the lower blade 18 and the left and right wind direction changing blades 14 may interfere with each other. Therefore, it is necessary to determine the shape by notching the left and right wind direction changing blades 14 or the like so that the two do not interfere with each other. Here, in order to minimize the notch and maximize the area of the left and right wind direction changing blades 14, it is preferable that the distance α is 0 (the drive shaft 22 of the lower blade 18 is a rotation of the left and right wind direction changing blades 14). Exists on the extension of the axis 47). On the other hand, the longer the length of the lower blade 18 in the flow channel direction, the larger the torque required to drive the lower blade 18. Therefore, in the present embodiment, the distance α is set to about 5 mm so that the area of the left and right wind direction changing blades 14 can be secured while suppressing the necessary torque.

Although the distance α is set to about 5 mm on the downwind side in the present embodiment, the same effect can be obtained if it is within 10 mm on the downwind side. Furthermore, if it is set upwinding with respect to the extension line of the rotation axis 47 of the left and right wind direction changing blades 14, although the torque required to move the lower blade 18 becomes large, the part entering the windward inside the outlet Can be made small, which is effective in securing the blowing performance. Also in this case, if α is within −10 mm (10 mm upwind from the rotation shaft 47 of the left and right wind direction changing blades 14), the same effect can be obtained in terms of securing the area of the left and right wind direction changing blades 14.

Further, as shown in FIG. 2C, the distance β between the rotation center of the rocking fulcrum (drive shaft 22) of the lower blade 18 and the wind upper end of the lower blade 18 is set to about 10 mm. By arranging the drive shaft 22 of the lower blade 18 substantially at the upper end of the wind as described above, the lower blade 18 enters the windward side in the outlet 10 during operation of the air conditioner (when the lower blade is opened). Since the portion is smaller, not only the resistance by the lower blade 18 to the air blown out can be reduced, but also the area of the left and right wind direction changing blade 14 can be secured.

Although the distance β is set to 10 mm in this embodiment, the same effect can be obtained as long as it is within 20 mm.

18a and 18b are enlarged views of the left and right wind direction changing blade 14. FIG. In the present embodiment, on the opposite side of the side of the left and right wind direction changing blades 14 having the rotation shaft 47, a concave shape 48 is provided to prevent interference with the lower blade 18 during operation. By providing the concave shape 48 in this manner, it is possible to secure the area of the left and right wind direction changing blade 14 while avoiding the trajectory of the lower blade 18 at the time of operation.

Furthermore, as shown in FIG. 18b, in the concave shape 48, the shape is more gentle on the leeward side than on the windward side (θu <θL). That is, in the concave shape 48, the leeward side from the windward side is an inclination angle with respect to the base of the concave shape 48 (Otherwise, for example, the inclination angle with respect to the rotation axis 47 of the left and right wind direction changing blades 14 The inclination angle to the blowing direction of the wind is increased. As a result, the design of the left and right wind direction changing blades 14 is enhanced while securing the area on the windward side that has more influence on the wind direction changing performance.

Further, a connecting bar 15 connecting a plurality of blades constituting the left and right wind direction changing blades 14 is disposed on the leeward side of the rotation shaft 47 of the left and right wind direction changing blades. Thereby, the influence which the connection crosspiece 15 which becomes resistance to the air which blows out on a ventilation performance can be made small.

Since the tip B of the left and right wind direction changing vanes 14 projects forward from the design surface when the front and rear wind direction changing vanes 14 are turned, when the air conditioner is stopped, closing the up and down wind direction changing vanes 12 in this state The up and down wind direction changing blades 12 interfere with the left and right wind direction changing blades 14.

Therefore, in the present invention, when the operation of the air conditioner is stopped, as shown in FIG. 11, one pair of left side blades 14a of the left and right wind direction changing blades 14 is inclined to the left and The upper and lower winds are controlled so that the air outlet 10 is closed by the up and down wind direction changing blades 12 after the blades 14b of the blade 14b are inclined to the right (after the tips of the two pairs of

blades

14a and 14b are opened). Interference between the wind direction changing blade 12 and the left and right wind direction changing blade 14 is avoided.

That is, at the time of operation of the air conditioner, with the up and down wind direction changing vanes 12 open, the left and right wind direction changing vanes 14 long in the flow direction in the air passage 28 do not interfere with the up and down wind direction changing vanes 12 Not only can the left and right change be made freely, but also the wind direction change performance on the left and right can be improved. When the air conditioner is stopped, the wind direction change blade 14 is inclined before changing the wind direction of the outlet 10 up and down. By controlling so as to close with the blades 12, the left and right wind direction changing blades 14 can be accommodated in the indoor unit body 2.

In the above embodiment, when the air conditioner is stopped, the left set of blades 14a is inclined to the left, and the right set of blades 14b is inclined to the right. 14a and 14b may be inclined in the same direction.

Further, the left and right wind direction changing blades 14 may be configured by a plurality of blades controlled simultaneously, instead of the two pairs of

blades

14a and 14b controlled independently.

<Sidewall shape of outlet 10>
The “sidewall shape of the air outlet 10” referred to here is a cross section (a cross section substantially perpendicular to the design surface) along the surface of the lower blade 18 in a state where the lower blade 18 is most downward. The shape when the side wall 34 is viewed from the front means the shape of the left and right side walls 34 in the cross section along line IV-IV in FIG. 2A, and the cross section parallel to the cross section has the same shape It is presenting.

The left and right side walls 34 have a cross-sectional shape that spreads outward toward the blower outlet 10 in the air passage 28, and the cross-sectional shape thereof has a plurality of straight lines toward the blower outlet 10 as shown in FIG. It is what combined the

part

36,40 and the some

circular arc part

38,42.

More specifically with reference to FIG. 14, each of the left and right side walls 34 is formed on the immediate downstream side of the indoor fan 8 and extends outward with a straight portion 36 substantially orthogonal to the central axis of rotation of the indoor fan 8. An arc portion 38 formed on the downstream side of the straight portion 36 and connected to the straight portion 36, a straight portion 40 formed on the downstream side of the arc portion 38 to spread outward, and connected to the arc portion 38, and a straight portion so as to spread outward An arc portion 42 formed on the downstream side of 40 and connected to the straight portion 40 is provided, and the arc portion 42 is connected to the straight portion 46 at the lower front of the indoor unit main body 2.

As shown in FIG. 16, in the case where the side wall 34 opposed to the generally planar left and right wind direction changing vanes 14 has one arc shape, in the air passage 28 a between the side wall 34 and the outermost left and right wind direction changing vanes 14. Since a local constriction 44 is generated and the width of the ventilation passage 28 a gradually narrows from the upstream side toward the constriction 44 and further gradually widens from the constriction 44 toward the downstream, ventilation resistance is increased. growing.

On the other hand, when the air blown out from the indoor fan 8 passes through the closed space between the left and right wind direction changing blades 14 and the straight portion 40 of the side wall 34, the shapes shown in FIGS. Since the ventilation passage 28a between the change blade 14 and the side wall 34 is not narrowed locally, it is possible to reduce the air flow resistance of the blowing air changed to the left and right between the left and right wind direction change blade 14 and the side wall 34. it can.

Furthermore, as shown in FIG. 17, when the side wall 34 opposed to the left and right wind direction changing blade 14 is formed into one linear shape, when the blowout air is blown out from the blowout port 10 into the open space, it is blown out from the blowout port 10 The wind blows away from the wall, and the so-called "Coanda effect" in which the flow direction changes along the object can not be expected.

On the other hand, in the case of the shapes shown in FIGS. 14 and 15, when the blowout air is blown out from the outlet 10 on the downstream side of the straight portion 40 to the open space, Since the blowing air is blown out right and left sideways without peeling from the wall surface, the air flow can be generated along the direction of the left and right wall, and the Coanda effect can be enhanced.

Therefore, the blowing air flowing through the left and right side walls 34 does not weaken the flow in the air passage 28a, and further, even after being blown out from the outlet 10, the flow strength is largely changed by the left and right It will be blown out.

Further, as shown in FIG. 14, by providing the arc portion 38 spreading outward on the upstream side of the straight portion 40, the wind blown out forward from the indoor fan 8 follows the straight portion 40 of the side wall 34 spreading outward. Not only is the flow guided between the left and right wind direction changing blades 14 and the straight portion 40 of the side wall 34 smoother, the downstream end of the circular arc portion 42 is the straight portion 46 of the front surface of the indoor unit main body 2 By setting the shape so as to be substantially in contact with the air flow, the flow of the blowing air flows along the front surface of the indoor unit main body 2.

Here, "substantially contact" means that the distance from the center of curvature of the arc portion 42 to the straight portion 46 is equal to the curvature radius of the arc portion 42 or slightly smaller than the curvature radius of the arc portion 42. Means.

Furthermore, the flow blown out from the outlet 10 into the open space tends to separate from the side wall 34, but the radius of curvature (for example, R45) of the downstream arc portion 42 becomes the radius of curvature for the upstream arc portion 38 (for example, When it is set larger than R10), the Coanda effect is improved, and the flow blown out from the blowout port 10 into the open space becomes difficult to separate from the side wall 34.

In addition, when the left and right wind direction changing blades 14 are most inclined, the air passage 28a between the left and right wind direction changing blades 14 and the straight portion 40 is shaped so as to narrow slightly toward the downstream side. As a result of the narrowing, the flow of the blown air, which has been accelerated, adheres to the arc portion 42 and the straight portion 46 by the Coanda effect, and further flows along the front surface of the indoor unit main body 2.

In the present embodiment, although the case where the up and down wind direction changing blades are configured by two pieces has been described, it may be configured by other numbers.

Note that the effects possessed by the embodiments can be exhibited by appropriately combining any of the various embodiments described above.

While the present invention has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art. Such variations and modifications are to be understood as included within the scope of the present invention as set forth in the appended claims, unless they depart therefrom.

Japanese patent application no. The disclosure content of the specification of 2011-134884, of the drawings and of the claims is hereby incorporated by reference in its entirety.

Since the air conditioner according to the present invention can increase the blade area and improve the changing performance by lengthening the length of the left and right wind direction changing blades, various air conditioners used in general homes can be obtained. It is useful as an air conditioner.

2 indoor unit body 2a front opening 2b top opening 4 front panel,
6 indoor heat exchanger 8 indoor fan 10 air outlet 12 up / down air direction changing blade 14 left / right air direction changing blade 14a left blade 14b right blade 15 connecting bar 15a left connecting bar 15b right connecting bar 16 filter 18 lower blade 18a narrow width Part 18b Wide part 20 Upper blade 20a Wide part 20b Wide part 20c Concave part 22 Drive shaft 24 Drive shaft 26

Drive source

28, 28a Ventilation path 30 Rear guider 32 Stabilizer 34 Side wall 36 Straight part 38 Arc part 40 Arc part 42 Arc part 44 Narrowing Part 46 Straight part 47 Rotary shaft 48 Concave shape

Claims

The indoor unit is provided with a fan for taking in and blowing out indoor air and a wind direction changing blade for changing the direction of the air blown out from the air outlet, and the air conditioner performs the air conditioning operation by controlling the wind direction changing blade. ,
The wind direction changing blade has a vertical wind direction changing blade for changing the direction of air blown out from the air outlet up and down, and a left and right air direction changing blade for changing air direction blown out from the air outlet to left and right ,
The air conditioner according to claim 1, wherein a swing fulcrum of the up and down wind direction changing blades is disposed substantially on an extension of a rotation axis of the left and right wind direction changing blades.
The air conditioner according to claim 1, wherein a swing fulcrum point of the up and down wind direction changing blade is disposed in the vicinity of a wind upper end during operation of the up and down wind direction changing blade.
The air conditioner according to any one of claims 1 and 2, wherein the left and right wind direction changing vanes have a concave shape that prevents interference with the up and down wind direction changing vanes during operation.
The air conditioner according to claim 3, wherein, in the concave shape of the left and right wind direction changing blades, an inclination angle with respect to a bottom side of the concave shape is larger on the leeward side than the windward side.
The air conditioner according to any one of claims 1 to 4, wherein a connecting bar connecting a plurality of blades constituting the left and right wind direction changing blades is disposed on the leeward side with respect to the rotation axis of the left and right wind direction changing blades.
The upper and lower wind direction changing blades are a lower blade that opens and closes the air outlet, and an upper blade that is provided above the lower blade and that cooperates with the lower blade to control the blowing direction of air blown out from the air outlet. Have
The air conditioner according to any one of claims 1 to 5, wherein a rocking fulcrum point disposed on a substantially extended line of the rotary shaft of the left and right wind direction changing blades is a rocking fulcrum point of the lower blade.