JP4770101B2 - Air conditioner indoor unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an indoor unit of an air conditioner.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as an indoor unit of an air conditioner, as shown in FIG. 2, a casing 21 having a front grill 22 and a bottom frame 23, and a heat exchanger disposed in the casing 21 and bent in an inverted J shape. 24 and a filter 25 disposed on the upstream side of the heat exchanger 24 in the casing 21. The heat exchanger 24 includes a front side heat exchange unit 26 on the front side and a back side heat exchange unit 27 on the back side. The filter 25 extends upward from the vicinity of the lower end of the front grill 22 along the front heat exchanging portion 26, and further extends in the horizontal direction from the upper end side of the front heat exchanging portion 26 toward the back side.
[0003]
In the indoor unit of the air conditioner having the above-described configuration, during operation, the fan 28 sucks indoor air from the front side and the upper surface side, and removes dust, dust, and the like of the sucked indoor air by the filter 25, and then heat exchanger The air is blown into the room through a blowout port 29 provided on the lower side of the front grille 22 through 24.
[0004]
[Problems to be solved by the invention]
By the way, in the indoor unit of the air conditioner, the area of the horizontal portion 25a of the filter 25 with respect to the heat exchange processing area of the back heat exchange unit 27 is smaller than the area of the filter 25 with respect to the heat exchange processing area of the front heat exchange unit 26. There is a problem that dust or dust is likely to collect in the horizontal portion 25a of the filter 25 with respect to the rear heat exchange section 27, the pressure loss of the indoor air passing through the filter 25 is increased, the heat exchange efficiency is lowered, and this is contrary to energy saving. is there. Further, since the filter 25 is easily clogged, there is a problem that the filter needs to be frequently maintained.
[0005]
Therefore, an object of the present invention is to provide an indoor unit of an air conditioner that can prevent a decrease in efficiency and reduce the number of times of maintenance of a filter.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an indoor unit of an air conditioner according to the present invention has a reverse J-shape or reverse U-shape having a casing and a front heat exchange portion and a rear heat exchange portion disposed in the casing. In the 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, the upper end of the filter has a back end on the back side of the heat exchanger. It is bent so as to be positioned below the upper end, and a concave portion and a convex portion are formed under the back side of the filter to prevent dust attached to the back side of the filter from falling . It is characterized by.
[0007]
According to the indoor unit of the air conditioner configured as described above, during operation, the indoor air sucked from the front surface side and the upper surface side of the casing is reversed J-shaped or reversed after the filter removes dust and dirt. It blows out indoors through the front heat exchange part and the back heat exchange part of the heat exchanger bent in U shape. At this time, the upper part of the filter is bent so that the tip on the back side is located below the upper end of the heat exchanger, so that the filter corresponding to the back side heat exchange unit is upstream of the back side heat exchange unit. Therefore, 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 reduction in efficiency can be prevented. In addition, since dust or dust is less likely to clog the filter than in the past, the number of filter maintenance operations can be reduced.
[0008]
Further, since the filter is guided by the guide, the filter can be easily moved to a predetermined position.
[0009]
In addition, the concave and convex portions formed below the back side of the filter can hold dust such as dust and dirt attached to the back side of the filter, so that dust and dirt such as dust can be removed when the filter is pulled out. Can prevent falling.
[0010]
Moreover, the indoor unit of the air conditioner of one embodiment is characterized in that the filter has a back surface portion that is substantially parallel to the back surface of the back surface heat exchange unit.
[0011]
According to the outdoor unit of the air conditioner of the above embodiment, the filter has a back surface portion that is substantially parallel to the back surface of the back surface heat exchange unit, so that the filter for the back surface heat exchange unit is upstream of the back surface heat exchange unit. Since the processing area of the back portion of the filter increases much more than before, dust and dust are less likely to be clogged in the back portion of the filter. As a result, the pressure loss of the indoor air sucked into the casing is further reduced, and the reduction in efficiency can be more reliably prevented. In addition, since the filter is less likely to be clogged with dust and dirt, it is possible to reduce the number of filter maintenance operations.
[0012]
Moreover, the indoor unit of the air conditioner of one embodiment is characterized in that the guide is provided in the casing and guides the back surface portion.
[0013]
According to the outdoor unit of the air conditioner of the above embodiment, since the guide provided in the casing guides the back surface portion of the filter, the back surface heat exchange portion of the back surface heat exchange portion is opposed to be substantially parallel to the back surface of the back surface heat exchange portion. A filter can be held on the back side. Moreover, since the said guide guides the back surface part of a filter, a filter can be easily moved so that the back surface part of the filter may oppose the back surface of a back surface heat exchange part substantially parallel.
[0014]
Moreover, the indoor unit of the air conditioner according to an embodiment includes the casing having a front grille on the front side and a bottom frame on the back side, and the guide includes a first guide formed on the front grille, And a second guide formed on the bottom frame.
[0015]
According to the indoor unit of the air conditioner of the above embodiment, the first guide and the second guide are configured by configuring the guide with the first guide formed on the front grill and the second guide formed on the bottom frame. Thus, the filter can be guided from the front heat exchange section along the rear heat exchange section, and the filter can be guided downward on the upstream side of the rear heat exchange section.
[0016]
Moreover, the indoor unit of the air conditioner of one embodiment is characterized in that wheels are provided on the guide.
[0017]
According to the outdoor unit of the air conditioner of the embodiment, since the wheel is provided in the guide, the frictional resistance between the guide and the filter is reduced when the filter is attached and detached, and the filter is guided more smoothly by the guide. The As a result, the attaching and detaching operations of the filter are simplified, and the workability at the time of attaching and detaching the filter can be improved.
[0018]
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.
[0019]
According to the outdoor unit of the air conditioner of the above embodiment, since at least a part of the guide is made of a sliding member, the frictional resistance between the guide and the filter decreases when the filter is attached and detached, and the filter Is more guided to Sumes. As a result, the attaching and detaching operations of the filter are simplified, and the workability at the time of attaching and detaching the filter can be improved.
[0020]
Moreover, the indoor unit of the air conditioner of one embodiment is characterized in that a handle is provided on the front side of the upper part of the filter.
[0021]
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, it is easy to apply force to the filter by operating the filter with the handle. Improved operability. Therefore, the filter can be easily inserted from the front side toward the back side.
[0022]
Further, in the outdoor unit of the air conditioner of one embodiment, the filter is disposed so as to face the front-side filter disposed so as to face the front heat exchange unit, and the back heat exchange unit, It is characterized by comprising a front side filter and a separate back side filter.
[0023]
According to the outdoor unit of the air conditioner of the above embodiment, since the filters are configured by the separate front side filter and back side filter, it is easy to apply force to the back side filter, and when the back side filter is attached or detached Improved operability. Therefore, the back filter can be easily inserted from the front side toward the back side.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the indoor unit of the air conditioner of the present invention will be described in detail with reference to the illustrated embodiments.
[0025]
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 includes a casing 1, a heat exchanger 4 disposed in the casing 1 and bent in an inverted J shape, and a heat exchanger 4 in the casing 1. And a fan 8 disposed on the downstream side of the heat exchanger 4. The heat exchanger 4 has a front heat exchange part 6 on the front side and a rear heat exchange part 7 on the back side, and 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 is provided with openings (not shown) on the front side and the upper side. A detachable front panel 10 is attached to the front side of the front grill 2.
[0026]
Further, the upper part of the filter 5 is bent so that the rear end 13 is positioned below the upper end of the heat exchanger 4. The filter 5 has a back surface portion 5 a that faces the back surface of the back surface heat exchange unit 7 substantially in parallel. The filter 5 is guided by a first guide 11 which is a groove having a concave cross section formed in the front grille 2 and a second guide 12 which is formed in the bottom frame 3 and has a U-shaped cross section. 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 exchange unit 6, and the second guide 12 further vicinity of the upper end of the front heat exchange unit 6. The filter 5 is guided downward along the rear heat exchange section 7. The second guide 12 can hold the filter 5 on the back side of the back surface heat exchange unit 7 so that the back surface part 5a of the filter 5 faces the back surface of the back surface heat exchange unit 7 substantially parallel to the back surface. 5 can be moved easily.
[0027]
In the indoor unit of the air conditioner having the above configuration, during operation, the fan 8 sucks room air from the front side and the top side through the front grill 2 and removes dust, dust, and the like from the sucked room air with the filter 5. Then, it blows out into the room | chamber interior from the blower outlet 9 provided in the lower side of the front grille 2 through the front heat exchange part 6 and the back surface heat exchange part 7 of the heat exchanger 4. At this time, the upper part of the filter 5 is bent so that the rear-side tip 13 is positioned below the upper end of the heat exchanger 4. Since the processing area of the back surface portion 5a of the filter 5 is increased as compared with the prior art, the back surface portion 5a of the filter 5 is less likely to be clogged with dust. As a result, the pressure loss of the indoor air sucked into the casing 1 is reduced, and the efficiency reduction can be prevented. In addition, since the filter 5 is less likely to be clogged with dust or dust than before, the number of maintenance of the filter 5 can be reduced.
[0028]
In addition, 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 connected to the front heat exchange section 6 by the first guide 11 and the second guide 12. The filter 5 can be guided downward on the upstream side of the back surface heat exchanging unit 7.
[0029]
In the said embodiment, although the heat exchanger 4 was reverse J shape, reverse U shape may be sufficient.
[0030]
Moreover, in the said embodiment, although the back surface part 5a of the said filter 5 was opposed substantially parallel to the back surface of the back surface heat exchange part 7, the back surface part 5a was opposed substantially parallel to the back surface of the back surface heat exchange part 7. It does not have to be. In short, the upper part of the filter 5 may be bent and the tip 13 on the back side of the filter 5 may be positioned below the upper end of the heat exchanger 4.
[0031]
In the above embodiment, the first guide 11 formed on the front grill 2 and the second guide 12 formed on the bottom frame 3 constitute the guide for guiding the filter 5. Alternatively, a guide may be formed on a seal member that is formed near the upper end of the rear heat exchange unit 7 and blocks the air flow between the upper end of the front heat exchange unit 6 and the upper end of the rear heat exchange unit 7.
[0032]
Further, the first and second guides 11 and 12 may be, for example, rod-shaped members, plate-shaped members, or the like.
[0033]
Moreover, you may form at least one part of the said 1st, 2nd guides 11 and 12 with a sliding member. 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 becomes small. Therefore, the attachment and removal work of the filter 5 is facilitated, and workability can be improved.
[0034]
Moreover, in the said embodiment, although the 2nd guide 12 was formed in the bottom frame 3, you may form the 2nd guide 32 which has the wheel 31 in the bottom frame 3, as shown in FIG. In this case, when the filter 5 is attached or detached, the frictional resistance between the back surface portion 5a of the filter 5 and the second guide 32 decreases, and the back surface portion 5a of the filter 5 is guided smoothly by the second guide 32. As a result, the attachment and removal work of the filter 5 is facilitated, and workability is improved.
[0035]
FIG. 4 shows a schematic cross-sectional view of an indoor unit of an air conditioner according to another embodiment of the present invention. As shown in FIG. 4, the indoor unit of this air conditioner is different from the indoor unit of the air conditioner shown in FIG. Therefore, the same components as the indoor unit of the air conditioner of the embodiment shown in FIG.
[0036]
The filter 105 includes a front side filter 45 disposed so as to face the front heat exchange unit 6, and a back side filter 55 disposed so as to face the back surface heat exchange unit 7. The upper part of the back-side filter 55 is bent so that the back-side tip 63 is positioned below the upper end of the heat exchanger 4. The back filter 55 has a back surface portion 55 a that faces the back surface of the back surface heat exchange unit 7 substantially in parallel, and is guided by the first guide 11 and the second guide 12. The front end 55b of the back filter 55 and the back end 45a of the front filter 45 overlap.
[0037]
According to the indoor unit of the air conditioner having the above-described configuration, the filter 105 is configured by the separate front-side filter 45 and the back-side filter 55. Therefore, the dimensions of the front-side filter 45 and the back-side filter 55 are as follows. It is smaller than the filter 5 of FIG. Therefore, the front side filter 45 and the back side filter 55 are easy to handle, and the operability when the front side filter 45 and the back side filter 55 are attached and detached is improved. That is, the front-side filter 45 and the rear-side filter 55 can be easily attached and detached. For example, when attaching the said back side filter 55, it is easy to apply force to the back side filter 55, and the back side filter 55 can be easily inserted toward the back side from the front side.
[0038]
Further, a filter 75 shown in FIG. 5 may be used instead of the filter 105. As shown in FIG. 5, the filter 75 includes a handle 71 on the upper front side and a back surface portion 75 a that faces the back surface of the back surface heat exchange unit 7 substantially in parallel. A concave portion 73 and a projection 74 are formed at the tip portion 72 on the back side of the filter 75.
[0039]
The indoor unit of the air conditioner having the filter 75 is provided with a handle 71 on the front side of the upper part of the filter 75, so that the filter 75 can be operated with the handle 71 and a force is easily applied to the filter 75. be able 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 toward the back side. Further, since the filter 75 is integral, the manufacturing cost can be reduced as compared with the indoor unit of FIG.
[0040]
Further, even if dust such as dust or dust adhering to the back side of the filter 75 tries to fall along the filter 75, dust such as dust or dust is held by the recess 73 and the protrusion 74. Accordingly, dust such as dust or dust can be prevented from dropping when the filter 75 is pulled out.
[0041]
【The invention's effect】
As is clear from the above, the indoor unit of the air conditioner of the present invention is such that the upper part of the filter is bent so that the front end on the back side is located below the upper end of the heat exchanger. Since the processing area of the filter corresponding to the rear heat exchanging portion is increased on the upstream side of the exchanging portion as compared with the conventional one, it is difficult for the filter to be clogged with dust and dirt. Therefore, the pressure loss of the indoor air sucked into the casing is reduced, and a reduction in efficiency can be prevented. In addition, since dust or dust is less likely to clog the filter than in the past, the number of filter maintenance operations can be reduced.
[0042]
Further, since the filter is guided by the guide, the filter can be easily moved to a predetermined position.
[0043]
In addition, the concave and convex portions formed below the back side of the filter can hold dust such as dust and dirt attached to the back side of the filter, so that dust and dirt such as dust can be removed when the filter is pulled out. Can prevent falling.
[0044]
Moreover, the indoor unit of the air conditioner according to an embodiment includes a filter for the back surface heat exchange unit on the upstream side of the back surface heat exchange unit, because the filter has a back surface portion that is substantially parallel to the back surface of the back surface heat exchange unit. Since the processing area of the back portion of the filter increases much more than before, dust and dust are less likely to be clogged in the back portion of the filter. As a result, the pressure loss of the indoor air sucked into the casing is further reduced, and the reduction in efficiency can be more reliably prevented. In addition, since the filter is less likely to be clogged with dust and dirt, it is possible to reduce the number of filter maintenance operations.
[0045]
Further, in the indoor unit of the air conditioner of one embodiment, since the guide provided in the casing guides the back surface portion of the filter, the back surface heat exchange portion of the back surface heat exchange portion is opposed substantially parallel to the back surface of the back surface heat exchange portion. A filter can be held on the back side.
[0046]
Moreover, since the said guide guides the back surface part of a filter, a filter can be easily moved so that the back surface part of the filter may oppose the back surface of a back surface heat exchange part substantially parallel.
[0047]
Moreover, the indoor unit of the air conditioner according to the embodiment includes a first guide and a second guide by configuring the guide with a first guide formed on the front grille and a second guide formed on the bottom frame. Thus, the filter can be guided from the front heat exchange section along the rear heat exchange section, and the filter can be guided downward on the upstream side of the rear heat exchange section.
[0048]
Moreover, since the indoor unit of the air conditioner according to an embodiment has the guide provided with wheels, the frictional resistance between the guide and the filter is reduced when the filter is attached and detached, and the filter is guided more smoothly by the guide. The As a result, the attaching and detaching operations of the filter are simplified, and the operability when attaching and detaching the filter can be improved.
[0049]
In the indoor unit of an air conditioner according to an embodiment, since at least a part of the guide is made of a sliding member, the frictional resistance between the guide and the filter is reduced when the filter is attached and detached. Is more guided to Sumes. As a result, the attaching and detaching operations of the filter are simplified, and the workability when attaching and detaching the filter can be improved.
[0050]
Moreover, since the indoor unit of the air conditioner of one embodiment has a handle on the front side of the upper part of the filter, it is easy to apply force to the filter by operating the filter with the handle, and when the filter is attached or detached Improved operability. Therefore, the filter can be easily inserted from the front side toward the back side.
[0051]
In addition, since the outdoor unit of the air conditioner of one embodiment is configured by a separate front-side filter and rear-side filter, it is easy to apply force to the rear-side filter, and when the rear-side filter is attached or detached Operability is improved. Therefore, the back filter can be easily inserted from the front side toward the back side.
[Brief description of the drawings]
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 an indoor unit of a conventional air conditioner.
FIG. 3 is a schematic cross-sectional view of a modified example of the outdoor unit of the air conditioner according to the embodiment of the present invention.
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.
[Explanation of symbols]
1 ... Casing
2. Front grill
3 ... Bottom frame
4 ... Heat exchanger
5,75,105 ... filter
5a, 55a, 75a ... back side
6 ... Front heat exchange section
7 ... Back heat exchange section
13 ... tip
11 ... 1st guide
12, 32 ... Second guide
31 ... wheel
45 ... Front side filter
55 ... Back side filter
71 ... handle
72 ... tip
73 ... concave
74 ... Protrusions

Claims (8)

An inverted J-shaped or inverted U-shaped heat exchanger (4) having a casing (1) and a front heat exchanging portion (6) and a rear heat exchanging portion (7) disposed in the casing (1). And an indoor unit of an air conditioner comprising a filter (5, 75, 105) disposed upstream of the heat exchanger (4) in the casing (1),
The upper part of the filter (5, 75, 105) is bent so that the rear end (13) is located below the upper end of the heat exchanger (4) ,
A guide (11, 12, 32) for guiding the filter (5, 75, 105) to a predetermined position;
Below the back side of the filter (5, 75, 105), there are a concave portion (73) and a convex portion (for preventing dust attached to the back side of the filter (5, 75, 105) from dropping. 74) is formed . The indoor unit of the air conditioner characterized by the above-mentioned. In the indoor unit of the air conditioner according to claim 1,
The indoor unit of an air conditioner, wherein the filter (5, 75, 105) has a back surface portion (5a, 55a, 75a) opposed substantially parallel to the back surface of the back surface heat exchange portion (7). In the indoor unit of the air conditioner according to claim 1 ,
The indoor unit of an air conditioner, wherein the guide (12, 32) is provided in the casing (1) and guides the back surface (5a, 55a, 75a). In the indoor unit of the air conditioner according to claim 1 ,
The casing (1) has a front grill (2) on the front side and a bottom frame (3) on the back side, and the guides (11, 12, 32) are formed on the front grill (2). An air conditioner indoor unit comprising a first guide (11) and a second guide (12, 32) formed on the bottom frame (3). In the indoor unit of the air conditioner according to claim 1 ,
An indoor unit of an air conditioner, wherein the guide (32) is provided with wheels (31). In the indoor unit of the air conditioner according to claim 1 ,
An indoor unit of an air conditioner, wherein at least a part of the guide (11, 12, 32) is made of a sliding member. In the indoor unit of the air conditioner according to claim 1 ,
An indoor unit of an air conditioner, wherein a handle (71) is provided on the front side of the upper part of the filter (75). In the indoor unit of the air conditioner according to claim 1 ,
The filter (105) is disposed so as to face the front heat filter (45) disposed to face the front heat exchange part (6) and the rear heat exchange part (7). An indoor unit of an air conditioner comprising a filter (45) and a separate back filter (55).

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