JP3072421U - Air conditioner - Google Patents

Abstract

(57) [Summary] [Problem] To prevent water leakage from a drain pan. SOLUTION: A heat exchanger 5 is disposed in a housing 1 having an intake port 12 and a blow port 13 formed on a front surface thereof, and a synthetic resin drain pan 6 provided below the heat exchanger 5 is connected to the heat exchanger. 5 and a pair of left and right water collecting portions 6 integrally formed at both ends of the drain pan body 6a.
b and 6c, a drain pipe 8 is connected to a drain port 7 formed in one of the water collecting sections 6b, and a water stopcock 10 is formed in a drain port 9 formed in the other water collecting section 6c. In the connected air conditioner, a water absorbing sheet 15 is disposed on the bottom surface of the drain pan main body 6a.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an air conditioner in which water does not leak from a drain pan.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, there are techniques of this type of air conditioner described in Japanese Utility Model Publication No. Sho 62-1619 and Japanese Patent Laid-Open Publication No. Hei 1-306736. One example will be described with reference to FIGS. An indoor unit of an air conditioner, comprising: a housing (1) in which an engagement hole (1a) provided in a rear portion is engaged with an engagement piece (3a) of a mounting plate (3) fixed to a building frame (2). A blower fan 4 and a heat exchanger 5 are disposed in the heat exchanger 5. A drain pan 6 made of synthetic resin provided below the heat exchanger 5 includes a drain pan main body 6 a extending substantially over the entire length of the heat exchanger 5, and a drain pan main body 6 a. A drain pipe 8 is connected to a drain port 7 formed in one of the water collecting sections 6b, and a drain pipe 8 is formed in the other water collecting section 6c. The stopcock 10 is connected to the drain port 9 . Reference numeral 11 denotes a heat insulating material adhered to the lower surfaces of the water collecting portions 6b and 6c, 12 denotes an air inlet formed on the front panel of the housing 1, and 13 denotes a blower port formed below the drain pan main body 6a.

[0003] The procedure for installing the casing 1 will be described. When the drain pipe 8 is connected to the drain port 7 of one of the water collecting sections 6b, the building plate 3 is slightly inclined to the right in accordance with the connection. After the housing 1 is fixed to the frame 2, the engaging hole 1a of the housing 1 is engaged with the engaging piece 3a of the mounting plate 3 so that the housing 1 is slightly inclined from the horizontal line A as shown in FIG. It is installed on the building frame 2 so that it is inclined by α (about 5 °) and one water collecting part 6b is on the lower side. Thus, the drain water W can be collected on the right side of the drain pan 6, and can be smoothly drained from one of the water collecting portions 6b via the drain pipe 8.

[0004]

[Problems to be solved by the invention]

 In the above-described conventional configuration, the mounting plate 3 is slightly inclined rightward or leftward in accordance with the connection position of the drain pipe 8, so that the direction of the inclination can be easily mistaken. Therefore, as shown in FIG. 12, when the housing 1 is erroneously installed on the building frame 2 so as to be inclined from the horizontal line A at a slight inclination angle β and the other water collecting portion 6c is on the lower side. Then, the drain water W accumulates on the left side of the drain pan 6.

When the housing 1 is installed incorrectly as described above, the water is collected from the other water collecting portion 6 c on the drain pan main body 6 a by the surface tension of the drain water W and the water release of the synthetic resin drain pan 6. The tip Wa of the drain water W rises, and the water surface W. L may rise and exceed the top of the side wall of the other water collecting part 6c, and as a result, as shown by the arrow a, there is a possibility that water leaks due to overflow.

Further, since the drain water W stays in the other water collecting part 6 c, bacteria and fungi are liable to be generated in the drain water W which stays there. Served and not good for your health.

[0007] In view of the above problems, it is an object of the present invention to provide an air conditioner that prevents water from leaking from a drain pan and prevents drain water from staying in the drain pan.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the invention according to claim 1 is characterized in that a heat exchanger is arranged in a housing having an intake port and a ventilation port formed on a front surface, and a synthetic resin drain pan provided below the heat exchanger. A drain pan body extending over substantially the entire length of the heat exchanger, and a pair of left and right water collecting portions integrally formed at both ends of the drain pan main body, and a drain pipe is connected to a drain port formed in one of the water collecting portions. In addition, in an air conditioner in which a water stopcock is connected to a drain port formed in the other water collecting portion, a water absorption sheet is disposed on a bottom surface of the drain pan main body.

[0009] According to the above-described configuration, the swelling of the tip of the drain water accumulated on the drain pan main body can be eliminated by the capillary phenomenon of the water-absorbing sheet disposed on the bottom surface of the drain pan main body, and the level of the drain water can be lowered. Therefore, even if the housing is incorrectly installed, it is possible to prevent water leakage from occurring due to overflow from the drain pan.

According to a second aspect of the present invention, in the first aspect, the water-absorbent sheets are arranged in a pair on the right and left sides of the bottom surface of the drain pan main body.

[0011] According to the above configuration, even when the housing is tilted in the left or right direction, the tip of the drain water collected on the drain pan body is attached to one of the water absorbing sheets disposed at both ends of the bottom surface of the drain pan body. The contact makes it possible to eliminate the swelling of the tip of the drain water, and is economical because only two small water-absorbing sheets are arranged.

According to a third aspect of the present invention, in the first aspect of the present invention, the water absorbing sheet is disposed on a bottom surface of the drain pan main body over substantially the entire length of the drain pan main body.

[0013] According to the above configuration, since the drain water is absorbed by the water absorbing sheet and diffused over substantially the entire length of the drain pan main body, it is possible to promote the evaporation of the drain water and quickly drain the water.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the water absorbing sheet extends to the bottom surface of each of the water collecting portions.

[0015] According to the above configuration, the drain water in the water collecting portion closed by the water stopcock is sucked up by the water absorbing sheet and actively evaporated, so that even if the housing is mistakenly installed, the drain pan is kept in the drain pan. To eliminate the problem that drain water does not accumulate, so that bacteria and fungi are generated in the drain water accumulating in the drain pan and air containing odor is blown out from the ventilation port as in the past. Can be.

According to a fifth aspect of the present invention, in the device according to any one of the first to fourth aspects, the heat insulating sheet is provided between the bottom surface of the drain pan main body and the water absorbing sheet over substantially the entire length of the drain pan main body. It is characterized by being interposed.

According to the above configuration, the heat insulation is performed so that the drain pan body is not cooled by the heat insulating sheet, so that it is possible to prevent the dew from adhering to the lower surface of the drain pan body by cooling.

The invention according to claim 6 is the invention according to claim 5, wherein the heat insulating sheet extends to the bottom surface of each water collecting portion.

According to the above configuration, not only the drain pan main body but also each water collecting portion is insulated by the heat insulating sheet so as not to be cooled. Therefore, the heat insulating material adhered to the lower surface of each water collecting portion is omitted. Cost can be reduced.

The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the water-absorbing sheet is made of a polymer water-absorbing body.

According to the above configuration, a large amount of drain water can be absorbed and drained positively by the water absorbing power specific to the polymer water absorber.

The invention according to claim 8 is characterized in that, in the invention according to claim 7, the polymer absorbent is formed of sodium polyacrylate.

According to the above configuration, it is possible to mass-produce a low-cost water-absorbing sheet capable of absorbing a large amount of drain water by the sodium polyacrylate and positively carrying it.

[0024]

[Embodiment of the invention]

 FIGS. 1 and 2 show an indoor unit of an air conditioner according to a first embodiment of the present invention, in which a pair of water-absorbing sheets 15 is disposed at both ends of a bottom surface of a drain pan main body 6a. A drain pipe 8 is connected to a drain port 7 of the water collecting section 6b, and a water stopcock 10 is connected to a drain port 9 of the other water collecting section 6c. Since the configuration other than the above is substantially the same as the conventional example shown in FIGS. 9 and 10, the same portions are denoted by the same reference numerals and description thereof will be omitted.

The water-absorbing sheet 15 is made of a material having a water-absorbing function, such as a felt, a sponge, and a polymer water-absorbing body capable of absorbing and actively transporting a large amount of drain water. It is preferable to use a body made of sodium polyacrylate. This makes it possible to mass-produce the water-absorbing sheet 15 capable of absorbing a large amount of drain water and positively transporting the same at low cost.

According to the above configuration, as shown in FIG. 3, the housing frame 2 is inclined such that the housing 1 is inclined leftward from the horizontal line A at a slight inclination angle β, and the other water collecting portion 6c is on the lower side. Even if it is installed by mistake, the tip Wa of the drain water W collected on the left side of the drain pan 6 comes into contact with the right water absorbing sheet 15, and the tip Wa of the drain water W rises due to the capillary phenomenon of the water absorbing sheet 15. Then, the drain water W is smoothly sent out into one of the water collecting portions 6b, and the water surface W. Since L can be reduced, it is possible to prevent the occurrence of water leakage due to overflow from the drain pan 6 of the housing 1 erroneously installed. Also, since only two small water absorbing sheets 15 are arranged, it is economical.

Conversely to the above configuration, the drain pipe 8 is connected to the drain port 9 and the water stopcock 10 is connected to the drain port 7. If the wrong side is installed in the building frame 2 so that the bottom 6b is on the lower side, the tip Wa of the drain water W collected on the right side of the drain pan 6 comes into contact with the left water absorbing sheet 15, and the same operation as described above is performed. Will be

FIG. 4 shows a main part of an indoor unit of an air conditioner according to a second embodiment of the present invention. Rubber and the like are provided on the bottom surface of the drain pan main body 6a over substantially the entire length of the drain pan main body 6a. And a pair of left and right water-absorbing sheets 15 is disposed at both ends of the heat-insulating sheet 16. Since the configuration other than the above is almost the same as that of the first embodiment shown in FIGS. 1 to 3, the same parts are denoted by the same reference numerals and description thereof is omitted.

According to the above configuration, the heat insulation sheet 16 insulates the drain pan main body 6 a so as not to be cooled, so that the lower surface of the drain pan main body 6 a, that is, the ceiling surface 13 a of the ventilation port 13, is prevented from adhering dew due to cooling. Can be prevented.

FIG. 5 shows a main part of an indoor unit of an air conditioner according to a third embodiment of the present invention, in which a water absorbing sheet 15 is provided on the bottom surface of the drain pan main body 6a. It is arranged over almost the entire length. Structures other than the above are substantially the same as those of the first embodiment shown in FIGS. 1 to 3, and therefore, the same parts are denoted by the same reference characters and description thereof will be omitted.

According to the above configuration, since the drain water W is absorbed by the water absorbing sheet 15 and diffused over substantially the entire length of the drain pan main body 6a, the evaporation of the drain water W can be promoted to drain the water quickly.

FIG. 6 shows a main part of an indoor unit of an air conditioner according to a fourth embodiment of the present invention. Rubber and the like are provided on the bottom surface of the drain pan main body 6a over substantially the entire length of the drain pan main body 6a. A heat-absorbing sheet 16 is adhered, and the water-absorbing sheet 15 is disposed on the heat-insulating sheet 16 over the entire length. The configuration other than the above is substantially the same as that of the third embodiment shown in FIG. 5, and therefore, the same portions are denoted by the same reference numerals and description thereof will be omitted.

According to the above configuration, similarly to the second embodiment shown in FIG. 4, it is possible to prevent dew from adhering to the ceiling surface 13 a of the air outlet 13 by cooling.

FIG. 7 shows a main part of an indoor unit of an air conditioner according to a fifth embodiment of the present invention, in which a water-absorbing sheet 15 extends from a bottom surface of a drain pan main body 6a to respective water collecting sections 6b, 6c is extended to the bottom surface.

According to the above configuration, the drain water W in the water collecting portion 6 c (or 6 b) closed by the water stopcock 10 is sucked up by the water absorbing sheet 15 and actively evaporated, so that the housing 1 is installed. Even if a mistake is made, the drain water W does not stay in the drain pan 6, and therefore, bacteria and molds are generated in the drain water W staying in the drain pan 6 as in the related art, and the odor is discharged from the air vent 13. It is possible to solve the problem that the contained air is blown out.

FIG. 8 shows a main part of an indoor unit of an air conditioner according to a sixth embodiment of the present invention, from the bottom of the drain pan main body 6a to the bottom of each of the water collecting sections 6b and 6c. A heat insulating sheet 16 is attached, and a water absorbing sheet 15 is arranged on the heat insulating sheet 16 over the entire length thereof. Since the configuration other than the above is substantially the same as that of the fifth embodiment shown in FIG. 7, the same portions are denoted by the same reference numerals and description thereof will be omitted.

According to the above configuration, not only the drain pan main body 6a but also the water collecting portions 6b and 6c are insulated by the heat insulating sheet 16 so as not to be cooled. Therefore, the heat insulating sheets 16 are bonded to the lower surfaces of the water collecting portions 6b and 6c. The cost can be reduced by omitting the heat insulating material 11 (see FIG. 9).

[0038]

[Effect of the invention]

 According to the first aspect of the present invention, it is possible to eliminate the rising of the tip of the drain water accumulated on the drain pan main body by capillary action of the water-absorbing sheet disposed on the bottom surface of the drain pan main body and lower the level of the drain water. Therefore, even if the housing is installed incorrectly, it is possible to prevent the occurrence of water leakage due to overflow from the drain pan.

According to the invention of claim 2, even when the casing is tilted in either of the left and right directions, one end of the drain water accumulated on the drain pan main body is disposed at both ends of the bottom surface of the drain pan main body. This makes it possible to eliminate the swelling of the tip of the drain water by contacting the water-absorbent sheet, and it is economical because only two small water-absorbent sheets are arranged.

According to the third aspect of the present invention, the drain water is absorbed by the water-absorbent sheet and diffused over substantially the entire length of the drain pan main body. it can.

According to the invention described in claim 4, drain water in the water collecting portion closed by the water stopcock is sucked up by the water absorbing sheet and actively evaporated, so that even if the installation of the housing is mistaken, However, drain water does not stay in the drain pan, so that bacteria and fungi are generated in the drain water staying in the drain pan and air containing odor is blown out from the air vent as in the related art. Can be eliminated.

According to the invention of claim 5, since the heat insulation sheet insulates the drain pan body so as not to be cooled, it is possible to prevent the dew from adhering to the lower surface of the drain pan body by cooling.

According to the present invention, not only the drain pan main body but also each water collecting portion is insulated so as not to be cooled by the heat insulating sheet. Therefore, the heat insulating material adhered to the lower surface of each water collecting portion is removed. It can be omitted and cost can be reduced.

According to the present invention, a large amount of drain water can be absorbed by the water absorbing power specific to the polymer water absorbing body and can be positively transported to the drain pipe side.

According to the invention of claim 8, it is possible to mass-produce a low-cost water-absorbing sheet capable of absorbing a large amount of drain water by sodium polyacrylate and carrying it positively.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an indoor unit of an air conditioner according to a first embodiment of the present invention.

FIG. 2A is a plan view of the main part, and FIG. 2B is a longitudinal sectional view of the main part.

FIG. 3 is a schematic vertical sectional view showing the same drainage state.

FIG. 4A is a plan view showing a main part of an indoor unit of an air conditioner according to a second embodiment of the present invention, and FIG. 4B is a longitudinal sectional view of the main part.

FIG. 5A is a plan view showing a main part of an indoor unit of an air conditioner according to a third embodiment of the present invention, and FIG. 5B is a longitudinal sectional view of the main part.

FIG. 6A is a plan view showing a main part of an indoor unit of an air conditioner according to a fourth embodiment of the present invention, and FIG. 6B is a longitudinal sectional view of the main part.

FIG. 7A is a plan view showing a main part of an indoor unit of an air conditioner according to a fifth embodiment of the present invention, and FIG. 7B is a longitudinal sectional view of the main part.

FIG. 8A is a plan view showing a main part of an indoor unit of an air conditioner according to a sixth embodiment of the present invention, and FIG. 8B is a longitudinal sectional view of the main part.

FIG. 9 is a partially cutaway side view showing a conventional example.

10A is a plan view of the main part, and FIG. 10B is a longitudinal sectional view of the main part.

FIG. 11 is a schematic vertical sectional view showing the same drainage state.

FIG. 12 is a schematic longitudinal sectional view showing the water leakage state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 5 Heat exchanger 6 Drain pan 6a Drain pan main body 6b One water collecting part 6c The other water collecting part 7 Drain port 8 Drain pipe 9 Drain port 10 Water stopcock 12 Intake port 13 Vent port 15 Water absorption sheet 16 Heat insulation sheet

Claims (8)

[Utility model registration claims] 1. A heat exchanger is disposed in a housing having an intake port and a blow port formed on a front surface thereof, and a drain pan made of a synthetic resin provided below the heat exchanger extends substantially over the entire length of the heat exchanger. And a pair of left and right water collecting portions integrally formed at both ends of the drain pan main body, and a drain pipe is connected to a drain port formed in one of the water collecting portions, and formed in the other water collecting portion. An air conditioner in which a water stopcock is connected to a drain port provided above, wherein a water absorbing sheet is disposed on a bottom surface of the drain pan main body. 2. The air conditioner according to claim 1, wherein a pair of left and right water absorbing sheets are disposed at both ends of a bottom surface of the drain pan main body. 3. The air conditioner according to claim 1, wherein the water-absorbing sheet is disposed on a bottom surface of the drain pan main body over substantially the entire length of the drain pan main body. 4. The air conditioner according to claim 1, wherein the water absorbing sheet extends to a bottom surface of each of the water collecting sections. 5. A heat insulating sheet is interposed between the bottom surface of the drain pan main body and the water absorbing sheet over substantially the entire length of the drain pan main body.
The air conditioner according to any one of the above. 6. The air conditioner according to claim 5, wherein the heat insulating sheet extends to a bottom surface of each water collecting part. 7. The air conditioner according to claim 1, wherein the water absorbing sheet is made of a polymer water absorbing body. 8. The polymer absorbent according to claim 7, wherein the polymer absorbent is made of sodium polyacrylate.
The air conditioner as described.