WO2001029486A1

WO2001029486A1 - Indoor unit of air conditioner

Info

Publication number: WO2001029486A1
Application number: PCT/JP2000/007261
Authority: WO
Inventors: Tetsuya Yamashita
Original assignee: Daikin Industries, Ltd.
Priority date: 1999-10-20
Filing date: 2000-10-19
Publication date: 2001-04-26
Also published as: AU7949100A; JP4770101B2

Abstract

An indoor unit of air conditioner, comprising a heat exchanger (4) bent in reverse J-shape and having a front heat exchanging part (6) and a rear heat exchanging part (7) disposed in a casing (1) and a filter (5) disposed on the upstream side of the heat exchanger (4), wherein the upper part of the filter (5) is bent so that a tip (13) thereof on the rear side is positioned below the upper end of the heat exchanger (4), and the filter (5) has a rear part (5a) facing toward the rear face of the rear heat exchanging part (7) generally in parallel with each other, whereby a reduction in efficiency can be prevented, and the frequency of maintenances of the filter can be reduced.

Description

Description Air conditioning unit indoor unit Technical field

The present invention relates to an indoor unit of an air conditioner. Background art

Conventionally, as an indoor unit of an air conditioner, as shown in FIG. 2, a casing 21 having a front grille 22 and a bottom frame 23 and an inside of the casing 21 are arranged in an inverted J-shape. there is provided with a heat exchange 4 that is bent, and a filter 2 5 disposed on the upstream side of the heat exchanger ² 4 of the casing 2 in 1 in. The heat exchanger 24 includes a front heat exchange section 26 on the front side and a rear heat exchange section 27 on the rear side. The finoleta 25 extends upward from the vicinity of the lower end of the front grille 22 along the front heat exchange section 26, and further extends horizontally from the upper end side of the front heat exchange section 26 toward the rear side.

In the indoor unit of the air conditioner with the above configuration, during operation, the fan 28 sucks in the room air from the front side and the top side, and removes the dust and dirt from the sucked room air by the filter 25. The air is blown into the room from an air outlet 29 provided on the lower side of the front grill 22 via the exchanger 24.

By the way, in the indoor unit of the air conditioner, the horizontal portion of the filter 25 with respect to the heat exchange processing area of the rear heat exchange section 27 is larger than the area of the filter 25 with respect to the heat exchange processing area of the front heat exchange section 26. Since the area of 25a is small, dust and dirt easily accumulate on the horizontal portion 25a of the filter 25 with respect to the rear heat exchange section 27, and the pressure loss of room air passing through the filter ²⁵ increases, There is a problem that the heat exchange efficiency is reduced, which is against energy saving. Also, since the above filter 25 is easily clogged,

'There is also the problem that it needs to be done frequently. Disclosure of the invention An object of the present invention is to provide an indoor unit of an air conditioner that can prevent a decrease in efficiency and can reduce the number of maintenances of a filter.

In order to achieve the above object, an indoor unit of an air conditioner of the present invention has a casing and an inverted J-shape or an inverted U-shape disposed in the casing and having a front heat exchange section and a rear heat exchange section. In an indoor unit of an air conditioner including a heat exchanger and a filter disposed on the upstream side of the heat exchanger in the casing, an upper portion of the filter has a rear end, the upper end of which is the heat exchanger. It is characterized in that it is bent below the upper end.

According to the indoor unit of the air conditioner having the above configuration, at the time of operation, the room air sucked from the front side and the top side of the casing removes dust and dirt by the filter, and then becomes an inverted J-shape. The heat is blown into the room through the front and back heat exchange sections of the heat exchanger bent in an inverted U shape. At this time, the upper part of the filter is bent so that the rear end is located below the upper end of the heat exchanger, so that the upper part of the filter corresponds to the rear heat exchange part on the upstream side of the rear heat exchange part. The processing area of the filter is larger than before, so the filter is less likely to be clogged with dust and dirt. Therefore, the pressure loss of the indoor air sucked into the casing is reduced, and a decrease in efficiency can be prevented. Further, dust and dirt are less likely to clog the filter than before, so that the number of filter maintenance operations can be reduced.

Moreover, the indoor unit of the air conditioner of one embodiment is characterized in that the filter has a rear surface portion substantially parallel to the rear surface of the rear heat exchange unit. According to the outdoor unit of the air conditioner of the above embodiment, the filter has a back surface that is substantially parallel to the back of the back heat exchange unit, so that the back heat exchange unit is located upstream of the back heat exchange unit. Since the processing area of the rear surface of the filter with respect to the filter is much larger than before, the rear surface of the filter is less likely to be clogged with dust and dirt. As a result, the pressure loss of the room air sucked into the casing is further reduced, and the efficiency can be more reliably prevented from lowering. Further, since the filter is less likely to be clogged with dust and the like than in the past, the number of filter maintenance operations can be reduced. In one embodiment, the indoor unit of the air conditioner includes a guide for guiding the filter to a predetermined position. According to the indoor unit of the air conditioner of the embodiment, since the filter is guided by the guide, the filter can be easily moved to a predetermined position.

In one embodiment of the indoor unit of the air conditioner, the guide is provided in the casing, and guides the rear surface.

According to the outdoor unit of the air conditioner of the above embodiment, the guide provided on the casing guides the rear part of the filter, so that the rear heat exchange unit faces the rear surface of the rear heat exchange unit substantially in parallel. The filter can be held on the back side of the. In addition, since the guide guides the rear surface of the filter, the filter can be easily moved such that the rear surface of the filter faces substantially parallel to the rear surface of the rear heat exchange unit.

In one embodiment, the indoor unit of the air conditioner, wherein the casing has a front grille on a front side and a bottom frame on a rear side, wherein the guide is a first guide formed on the front grille, A second guide formed on the bottom frame.

According to the indoor unit of the air conditioner of the above embodiment, the first guide formed on the front grille and the second guide formed on the bottom frame constitute a guide, whereby the first guide and the second guide are formed. The guide guides the filter from the front heat exchange section to the rear heat exchange section, and the filter can be guided downward on the upstream side of the rear heat exchange section. The indoor unit of the air conditioner according to one embodiment is characterized in that wheels are provided on the guide.

According to the outdoor unit of the air conditioner of the above embodiment, since the wheels are provided on the guide, the frictional resistance between the guide and the filter is reduced when the filter is attached or detached, and the filter is guided more smoothly by the guide. You. As a result, the work of attaching and detaching the filter is simplified, and the workability when attaching and detaching the filter can be improved.

Moreover, the indoor unit of the air conditioner of one embodiment is characterized in that at least a part of the guide is made of a sliding member.

According to the outdoor unit of the air conditioner of the embodiment, at least a part of the guide is formed of a sliding member. The frictional resistance with the filter is reduced, and the filter is designed more smoothly by the guide. As a result, the work of attaching and detaching the filter is simplified, and the workability when attaching and detaching the filter can be improved.

The indoor unit of the air conditioner according to one embodiment is characterized in that a handle is provided on a front side of an upper portion of the filter.

According to the outdoor unit of the air conditioner of the above embodiment, since the handle is provided on the upper front side of the filter, operating the filter with the handle makes it easier to apply force to the filter, and Operability when attaching and detaching is improved. Therefore, the filter can be easily inserted from the front side to the rear side. In one embodiment, the outdoor unit of the air conditioner, wherein the filter is disposed so as to face the front heat exchange unit, and the filter is disposed so as to face the rear heat exchange unit. It is characterized by comprising the above-mentioned front side filter and a separate rear side filter.

According to the outdoor unit of the air conditioner of the embodiment, since the filter is constituted by the separate front side filter and rear side filter, it becomes easy to apply a force to the rear side filter, and the rear side filter can be attached and detached. Operability at the time is improved. Therefore, the back side filter can be easily inserted from the front side to the back side.

Moreover, the outdoor unit of the air conditioner of one embodiment is characterized in that a concave portion and a protrusion are formed at a front end portion on the back side of the filter.

According to the outdoor unit of the air conditioner of the above embodiment, even if dust such as dust or dirt attached to the back side of the filter is about to fall along the filter, the concave portion and the projection are formed at the tip on the back side of the filter. As a result, dust such as dust and dirt is held by the concave portions and the protrusions. Therefore, it is possible to prevent dust such as dust and dirt from falling when the filter is pulled out. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention. FIG. 2 is a schematic sectional view of a room unit of a conventional air conditioner.

FIG. 3 is a schematic diagram of a modification of the outdoor unit of the air conditioner according to the embodiment of the present invention. It is sectional drawing.

FIG. 4 is a schematic sectional view of an indoor unit of an air conditioner according to another embodiment of the present invention.

FIG. 5 is a schematic sectional view of an indoor unit of an air conditioner according to still another embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the indoor unit of the air conditioner of the present invention will be described in detail with reference to the illustrated embodiment.

FIG. 1 is a schematic sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention. As shown in FIG. 1, the indoor unit of the air conditioner is provided with a casing 1, a heat exchanger 4 disposed in the casing 1 and bent in an inverted J-shape, and a heat exchanger in the casing 1. The heat exchanger 4 includes a filter 5 disposed upstream of the heat exchanger 4 and a fan 8 disposed downstream of the heat exchanger 4. The heat exchanger 4 has a front heat exchange section 6 on the front side and a rear heat exchange section 7 on the back side. The casing 1 has a front grill 2 on the front side and a bottom frame 3 on the back side. The front grill 2 has openings (not shown) on the front side and the top side. A removable front panel 10 is attached to the front side of the front grill 2.

The upper part of the filter 5 is bent so that the rear end 13 is located below the upper end of the heat exchanger 4. The filter 5 has a back surface 5 a that faces the back surface of the back heat exchange unit 7 substantially in parallel. Further, the filter 5 is guided by a first guide 11 which is a groove having a concave cross section formed in the front grill 2 and a second guide 12 which has a U-shaped cross section formed in the bottom frame 3. . Specifically, the first guide 11 guides the filter 5 upward from the vicinity of the lower end of the front grill 2 along the front heat exchanging section 6, and furthermore, the second guide 12 The filter 5 is guided downward from the vicinity of the upper end of the section 6 along the rear heat exchange section 7. According to the second guide 12, the filter 5 can be held on the rear side of the rear heat exchanging section 7 so that the rear section 5 a of the filter 5 faces substantially parallel to the rear of the rear heat exchanging section 7. At the same time, the finoleta 5 can be easily moved. In the indoor unit of the air conditioner having the above configuration, during operation, the fan 8 sucks the room air from the front side and the top side through the front grill 2 from the front side and the top side, and filters the sucked room air dust and the like with the filter 5. After removal, the air is blown into the room from the outlet 9 provided on the lower side of the front grill 2 through the front heat exchange section 6 and the rear heat exchange section 7 of the heat exchanger 4. At this time, the upper portion of the filter 5 is bent so that the rear end 13 is located lower than the upper end of the heat exchanger 1 4, so that the heat exchange processing area of the rear heat exchange section 7 is formed. Since the processing area of the rear portion 5a of the filter 5 with respect to the filter 5 is increased as compared with the conventional case, the rear portion 5a of the filter 5 is not easily clogged with dust and dirt. As a result, the pressure loss of the indoor air sucked into the casing 1 is reduced, and a decrease in efficiency can be prevented. Further, since dust and dirt are less likely to clog the filter 5 than before, the number of maintenance operations of the filter 5 can be reduced.

Further, since the first guide 11 is formed on the front grill 2 and the second guide 12 is formed on the bottom frame 3, the filter 5 is formed by the first guide 11 and the second guide 12. The filter 5 can be guided from the front heat exchange section 6 along the rear heat exchange section 7 to guide the filter 5 downward on the upstream side of the rear heat exchange section 7.

In the above embodiment, the heat exchanger 4 has an inverted J shape, but may have an inverted U shape.

Further, in the above-described embodiment, the back surface 5a of the filter 5 is opposed substantially parallel to the back surface of the back heat exchange unit 7, but the back surface 5a is substantially parallel to the back surface of the back heat exchange unit 7. It does not have to be. The point is that the upper end of the filter 5 is bent so that the rear end 13 of the filter 5 is located below the upper end of the heat exchanger 4.

In the above embodiment, the guide for guiding the filter 5 is constituted by the first guide 11 formed on the front grill 2 and the second guide 12 formed on the bottom frame 3. A guide is formed in the seal member formed near the upper end of the heat exchange section 6 and the rear heat exchange section 7 to block the flow of air between the upper end of the front heat exchange section 6 and the upper end of the rear heat exchange section 7. May be.

Further, the first and second guides 11 and 12 may be, for example, a rod-shaped member or a plate-shaped member.

Further, at least a part of the first and second guides 11 and 12 is formed by a sliding member. Is also good. In this case, when the filter 5 is attached or detached, the frictional resistance between the filter 5 and the first and second guides 11 and 12 is reduced. Therefore, the work of mounting and removing the filter 5 is facilitated, and the workability can be improved.

Further, in the above embodiment, the force forming the second guide 12 on the bottom frame 3 As shown in FIG. 3, the second guide 32 having the wheels 31 may be formed on the bottom frame 3. Good. In this case, when the filter 5 is attached or detached, the frictional resistance between the rear portion 5 a of the filter 5 and the second guide 32 decreases, and the rear portion 5 a of the finoleta 5 becomes smooth with the second guide 32. You will be guided. As a result, the work of installing and removing the filter 5 is facilitated, and the workability is improved.

FIG. 4 is a schematic sectional view of an indoor unit of an air conditioner according to another embodiment of the present invention. The air conditioner indoor unit differs from the air conditioner indoor unit shown in FIG. 1 only in the filter 105 as shown in FIG. Therefore, the same components as those of the indoor unit of the air conditioner according to the embodiment shown in FIG.

The filter 105 is composed of a front filter 45 arranged so as to face the front heat exchange section 6 and a rear filter 55 arranged so as to face the rear heat exchange section 7. ing. The upper portion of the rear filter 55 is bent such that the rear end 63 is located lower than the upper end of the heat exchanger 4. The back side filter 55 has a back side 55 a facing the back side of the back side heat exchange section 7 substantially in parallel, and is guided by the first guide 11 and the second guide 12. The front end 55b of the rear filter 55 and the rear end 45a of the front filter 45 overlap each other. According to the indoor unit of the air conditioner having the above configuration, the filter 105 is constituted by the separate front side filter 45 and the rear side filter 55, so that the front side filter 45 and the rear side Each dimension of the filter 55 is smaller than that of the filter 5 of FIG. Therefore, the front-side filter 45 and the rear-side filter 55 are easy to operate, and the operability when attaching and detaching the front-side finoletor 45 and the rear-side finoletor 55 is improved. In other words, the front filter 45 and the rear filter 55 can be easily attached and detached. For example, when installing the rear filter 55, it is easy to apply force to the rear filter 55, and the rear filter 55 can be easily inserted from the front to the rear. it can.

Further, a filter 75 shown in FIG. 5 may be used instead of the filter 105. As shown in FIG. 5, the filter 75 has a handle 71 on the upper front side and a back part 75 a that is substantially parallel to the back of the back heat exchange part 7. I have. A concave portion 73 and a projection 74 are formed on the front end portion 72 of the filter 75 on the back side.

The interior unit of the air conditioner having the above-mentioned filter 75 has a handle 71 on the upper front side of the filter 75, so that the filter 75 can be operated with the handle 71. Force can be easily applied to As a result, the operability when attaching and detaching the filter 75 is high, and the filter 75 can be easily inserted from the front side to the rear side. Further, since the filter 75 is integrated, the manufacturing cost can be reduced as compared with the indoor unit shown in FIG.

Further, even if dusts and dirt attached to the rear side of the finleter 75 try to fall along the filter 75, the dusts and dirt are held by the concave portions 73 and the projections 74. Therefore, when the filter 75 is pulled out, dust and dirt can be prevented from falling.

Claims

Range of request

1. An inverted J-shaped or U-shaped heat exchanger (1) disposed in the casing (1) and having a front heat exchange section (6) and a rear heat exchange section (7). 4) and a filter (5, 75, 105) disposed upstream of the heat exchanger (4) in the casing (1). The upper part of the air conditioner is characterized in that the upper part of the air conditioner is bent below the upper end of the heat exchanger (4). Indoor unit.

2. The filter (5, 75, 105) has a back surface portion (5a, 55a, 75a) substantially parallel to the back surface of the back heat exchange portion (7). Indoor unit of air conditioner.

3. An indoor unit for an air conditioner, comprising: a guide (11, 1, 2, 3 2) for guiding the filter (5, 75, 105) to a predetermined position.

4. The guide (12, 32) is provided in the casing (1), and guides the back surface (5a, 55a, 75a). Cut.

5. The casing (1) has a front grille (2) on the front side and a bottom frame (3) on the back side, and the guides (11, 12, 23) are provided with the front grille (11). An indoor unit for an air conditioner, comprising: a first guide (11) formed in 2); and a second guide (12, 32) formed in the bottom frame (3). .

6. An indoor unit for an air conditioner, wherein the guide (3 2) is provided with wheels (3 1).

7. An indoor unit for an air conditioner, wherein at least a part of the guides (11, 12 and 32) is made of a sliding member.

8. An air conditioner indoor unit characterized in that a handle (71) is provided on the upper front side of the filter (75).

9. The filter (105) has a front filter (45) that is arranged to face the front heat exchange section (6) and a filter that faces the rear heat exchange section (7). An indoor unit for an air conditioner, comprising: the front filter (45) and a separate rear filter (55).

10. A room unit of an air conditioner, wherein a concave portion (73) and a projection (74) are formed in a front end portion (72) on the back side of the filter (75).