JP6402961B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner including a drain pan that receives drain water in a housing.

  Conventionally, an air conditioner including an indoor heat exchanger in a casing and a drain pan disposed below the indoor heat exchanger and receiving drain water flowing down from the indoor heat exchanger is known (for example, Patent Document 1). In this type, the drain pan is formed with a water receiving portion and a storage portion for storing drain water at a lower position than the water receiving portion, and an indoor heat exchanger is disposed in the water receiving portion.

Japanese Patent No. 4985697

By the way, in this type of air conditioner, it is desirable to quickly drain the drain water received by the water receiving section to the storage section to increase drain water drainage efficiency. In order to realize this, a configuration is conceivable in which a storage portion is provided at a lower position with respect to the water receiving portion and a difference in height between the water receiving portion and the storing portion is ensured.
However, in the conventional configuration, the indoor heat exchanger is disposed in the water receiving portion of the drain pan. Therefore, if the height difference between the water receiving portion and the storage portion is increased, the casing is enlarged in the height direction.
Therefore, an object of the present invention is to provide an air conditioner that solves the problems of the conventional techniques described above and that improves drainage drainage efficiency without increasing the size of the casing.

In order to solve the above problems, the present invention provides an air conditioner including an indoor heat exchanger in a housing and a drain pan disposed below the indoor heat exchanger and receiving drain water flowing down from the indoor heat exchanger. In the apparatus, the drain pan is connected to the water receiving part that receives the drain water, the storage part that is provided at a lower position than the water receiving part, and stores the drain water, and the water receiving part and the storage part. And the wall portion is inclined from the water receiving portion toward the storage portion, and the indoor heat exchanger is inclinedly arranged according to an inclination angle of the wall portion, and the wall portion A sealing material having airtightness and water permeability is disposed between the side surface portion of the indoor heat exchanger, and the side surface portion of the indoor heat exchanger is in close contact with the wall portion via the sealing material, The wall portion has a flow of the drain water flowing from the water receiving portion into the storage portion. Provided in the middle of, the sealing material is characterized in that from the water receiving portion is arranged only on a wall portion inclined toward the reservoir.

  In this configuration, the indoor heat exchanger may be arranged such that a lower end portion of the indoor heat exchanger is separated from a bottom surface of the storage portion. In addition, a drain pump that discharges the drain water out of the housing may be disposed in the storage unit.

  According to the present invention, the drain pan is provided in a lower portion than the water receiving portion that receives the drain water, the storage portion that stores the drain water, and connects the water receiving portion and the storage portion. Since the wall portion is provided and the side surface portion of the indoor heat exchanger is disposed in close contact with the wall portion, the water receiving portion is stored without changing the positional relationship in the height direction between the indoor heat exchanger and the storing portion. It can form in a higher position with respect to a part. Thereby, the height difference between the water receiving portion and the storage portion of the drain pan can be greatly formed without increasing the size of the casing, and the drainage drainage efficiency can be improved.

It is a perspective view which shows the external appearance structure of the ceiling suspension type air conditioning apparatus of this embodiment. It is sectional drawing which shows the internal structure of an air conditioner main body. It is a top view which shows the internal structure of an air conditioner main body. It is a side view which shows the arrangement | positioning relationship between a drain pan and an indoor heat exchanger. It is sectional drawing which shows the internal structure of the air conditioning apparatus concerning another embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an external configuration of a ceiling-suspended air conditioner 1 according to the present embodiment. FIG. 2 is a cross-sectional view showing the internal structure of the air conditioner body 1a, and FIG. 3 is a plan view showing the internal structure.
As shown in FIG. 1, the ceiling-suspended air conditioner (air conditioner) 1 has side covers 45 disposed on both sides of a casing (housing) 12A of the air conditioner body 1a, and the casing of the air conditioner body 1a. The bottom panel 14 and the suction grille 37 are arranged in the lower part (bottom part) of 12A. The casing 12A is provided with a receiving window 50 in which a receiving unit (not shown) for receiving an instruction signal from a remote controller (not shown) for controlling the air conditioner main body 1a is arranged on the back surface thereof.

  As shown in FIG. 2, the air conditioner main body 1 a is installed and fixed to the lower surface of the indoor ceiling board 5 by being hooked by a suspension bolt 3 suspended from the ceiling. In this air conditioner body 1a, the indoor heat exchanger 15 and the blower 13 are arranged in order from the front surface where the air outlet 41 is provided. In addition, the electrical equipment box 11 and the refrigerant pipe 29 (FIG. 3). Various devices such as are stored.

  As shown in FIG. 3, the blower 13 includes four blower units 21 to 24, which are fixed and arranged on a rotary shaft 27 driven by a single motor 25.

  As shown in FIG. 3, the blower 13 of this configuration includes four blower units 21 to 24, which are fixed and arranged on a rotating shaft 27 driven by a single motor 25. The indoor heat exchanger 15 is a fin-and-tube type heat exchanger as shown in FIG. 2, and is installed obliquely in the air conditioner body 1a. A refrigerant pipe 29 is connected to the indoor heat exchanger 15, and the refrigerant pipe 29 is led out of the casing 12A of the air conditioner main body 1a to be used as a compressor, a pressure reducing device, and outdoor heat of an outdoor unit (not shown). Connected to an exchange or the like.

As shown in FIG. 2, a styrene foam drain pan 31 is installed below the indoor heat exchanger 15, and a sheet metal panel 33 is installed on the lower surface of the drain pan 31. The drain pan 31 includes a water receiving portion 31a that receives drain water flowing down from the indoor heat exchanger 15, and a drain reservoir (storage portion) 31b that is provided at a lower position than the water receiving portion 31a and stores drain water. . A drain pump unit is connected to the drain port 34 of the drain reservoir 31b via a flexible tube (not shown), and the drain pump accommodated in the drain pump unit is drain water collected (stored) in the drain reservoir 31b. Is discharged out of the casing 12A of the air conditioner body 1a.
As shown in FIG. 2, a resin suction grille 37 is installed below the blower 13, and an air cleaning filter 39 is attached to the suction grille 37. When the blower 13 is driven, indoor air is sucked into the air conditioner main body 1a through the suction grille 37 and the filter 39. After the heat is exchanged by the indoor heat exchanger 15, the louver 51 changes the wind direction. It is adjusted and blown out into the room through the air outlet 41. As shown in FIG. 3, the middle partition plate 43 is a partition plate that transversely partitions substantially the center of the air conditioner main body 1 a, and the blower 13 is disposed in a chamber partitioned by the middle partition plate 43. Yes.

By the way, in the ceiling-suspended air conditioner 1 of this configuration, it is desirable that the drain water received by the water receiving portion 31a is caused to flow quickly into the drain pool 31b to improve drain water drainage efficiency.
Further, in the configuration in which the drain water stored in the drain reservoir 31a is pumped by the drain pump and discharged out of the air conditioner main body 1a, when the drain pump stops, the drain water in the drain hose is returned to the drain reservoir 31b. The Here, when the return amount of the drain water is larger than the storage amount of the drain pool 31b, the drain water flows toward the water receiving portion 31a, and the lower end portion of the indoor heat exchanger 15 is immersed in the drain water. In this case, if the indoor heat exchanger 15 is immersed in drain water for a long time, the fins of the indoor heat exchanger 15 may be corroded.

In order to solve the above-described problem, the drain reservoir 31b is provided at a lower position with respect to the water receiving portion 31a, and the storage amount of the drain reservoir 31b is secured, and the height difference between the water receiving portion 31a and the drain reservoir 31b is increased. A configuration to ensure a large amount can be considered.
However, simply forming the drain pool 31b deeply causes a problem that the drain pan is increased in size in the height direction, and as a result, the air conditioner body 1a is increased in size in the height direction.

For this reason, in this embodiment, as shown in FIG. 4, the drain pan 31 includes an inclined wall portion (wall portion) 31c that connects between the water receiving portion 31a and the drain reservoir 31b. The indoor heat exchanger 15 is disposed in a state in which the lower side surface (side surface portion) 15A of the indoor heat exchanger 15 is in close contact with the sealing material 40 interposed therebetween.
Specifically, the inclined wall portion 31c is inclined downward from the water receiving portion 31a toward the drain reservoir 31b, and this inclination angle is substantially the same as the inclination angle at which the indoor heat exchanger 15 is installed. ing. Thereby, when the drain pan 31 is used, the inclined wall portion 31c and the lower portion side surface 15A of the indoor heat exchanger 15 are in surface contact with each other, so that the amount of air flowing through the gap between the drain pan 31 and the indoor heat exchanger 15 is suppressed. Thus, the heat exchange efficiency can be improved.
Further, a sealing material 40 is disposed between the drain pan 31 and the indoor heat exchanger 15. Since this sealing material 40 is an airtight member formed of a foamed resin material, for example, even if there is an error in the inclination angle between the inclined wall portion 31c and the indoor heat exchanger 15, the drain pan 31 and the indoor heat The gap with the exchanger 15 can be sealed.
Moreover, the sealing material 40 is provided with water permeability that allows water to pass therethrough. For this reason, since the drain water of the water receiving part 31a infiltrates into the sealing material 40, passes through the sealing material 40, and flows into the drain pool 31b, a decrease in drainage efficiency is suppressed.

In the conventional configuration, as shown by a broken line in FIG. 4, the lower end portion 15B of the indoor heat exchanger 15 is arranged in contact with the water receiving portion 51a, so that the height difference between the water receiving portion 51a and the drain reservoir 31b. Therefore, it is difficult to quickly drain the drain water received by the water receiving portion 51a to the drain pool 31b and increase the drainage efficiency of the drain water.
On the other hand, in this embodiment, since the lower portion side surface 15A of the indoor heat exchanger 15 is brought into close contact with the inclined wall portion 31c, the water heat is not changed without changing the positional relationship between the indoor heat exchanger 15 and the drain reservoir 31b. The receiving part 31a can be provided in a higher place than before. Therefore, a large difference in height between the water receiving portion 31a and the drain reservoir 31b can be secured without increasing the size of the air conditioner main body 1a in the height direction, and the drain water received by the water receiving portion 31a can be quickly supplied to the drain reservoir 31b. The drainage efficiency of drain water can be increased.
Furthermore, since the bottom surface 31b1 of the drain reservoir 31b extends below the lower end portion 15B of the indoor heat exchanger 15 as compared with the conventional configuration, the drain reservoir volume can be increased correspondingly and returned from the drain pump. The drain water can suppress the lower end 15B of the indoor heat exchanger 15 from being immersed in the drain water.

As described above, a ceiling provided with the indoor heat exchanger 15 in the casing 12A and the drain pan 31 disposed below the indoor heat exchanger 15 and receiving drain water flowing down from the indoor heat exchanger 15. In the suspended air conditioner 1, the drain pan 31 includes a water receiving portion 31a that receives drain water, a drain reservoir 31b that is provided at a lower position than the water receiving portion 31a, and stores drain water, and these water receiving portions 31a. And an inclined wall portion 31c that connects the drain reservoir 31b, and the lower side surface 15A of the indoor heat exchanger 15 is brought into close contact with the inclined wall portion 31c, so that the height of the indoor heat exchanger 15 and the drain reservoir 31b is increased. The water receiving portion 31a can be formed at a higher position with respect to the drain reservoir 31b without changing the positional positional relationship. Thereby, without increasing the size of the air conditioner main body 1a in the height direction, it is possible to ensure a large difference in height between the water receiver 31a and the drain reservoir 31b, and the drain water received by the water receiver 31a is supplied to the drain reservoir 31b. It drains quickly and can improve drainage efficiency of drain water.
Further, by bringing the lower side surface 15A of the indoor heat exchanger 15 into close contact with the inclined wall portion 31c of the drain pan 31, air is prevented from flowing through the gap between the drain pan 31 and the indoor heat exchanger 15, and heat exchange is performed. Reduction in efficiency can be suppressed.

  Further, according to the present embodiment, the indoor heat exchanger 15 is arranged such that the lower end portion 15B of the indoor heat exchanger 15 is separated from the bottom surface 31b1 of the drain reservoir 31b. 15 can be extended to below the lower end portion 15B, and the volume of the drain pool can be increased accordingly.

  Moreover, according to this embodiment, since the drain pump unit which discharges drain water out of the air conditioner main body 1a is connected to the drain reservoir 31b via the flexible tube, the drain water accumulated in the drain reservoir 31b. Can be quickly discharged out of the machine. Furthermore, by increasing the storage amount of the drain pool 31b, it is possible to suppress the lower end portion 15B of the indoor heat exchanger 15 from being immersed in the drain water by the drain water returned from the drain pump.

  Moreover, according to this embodiment, the inclined wall part 31c inclines below toward the drain reservoir 31b from the water receiving part 31a, and the indoor heat exchanger 15 is inclinedly arranged according to the inclination angle of the inclined wall part 31c. Therefore, the inclined wall portion 31c and the lower portion side surface 15A of the indoor heat exchanger 15 can be easily brought into surface contact, and air can flow through the gap between the inclined wall portion 31c and the indoor heat exchanger 15. Can be prevented, and a decrease in heat exchange efficiency can be suppressed.

  In addition, according to the present embodiment, since the sealing member 40 having airtightness is disposed between the inclined wall portion 31c and the lower side surface 15A of the indoor heat exchanger 15, the inclined wall portion 31c and the indoor heat are provided. Even if there is some error in the inclination angle with the exchanger 15, the gap between the drain pan 31 and the indoor heat exchanger 15 can be sealed. Moreover, since the sealing material 40 has air permeability and water permeability that allows water to pass therethrough, the drain water of the water receiving portion 31a infiltrates the sealing material 40, passes through the sealing material 40, and flows into the drain pool 31b. The decrease in drainage efficiency is suppressed.

As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this.
For example, in the above-described embodiment, the drain pump unit is connected to the drain reservoir 31b via a flexible tube. However, the present invention is not limited to this, and the drain pump may be arranged in the drain reservoir 31b. .
Further, in the present embodiment, the configuration in which the present invention is applied to the indoor heat exchanger 15 and the drain pan 31 in the ceiling-suspended air conditioner 1 has been described. However, as shown in FIG. It is also possible to apply to the indoor heat exchanger 115 and the drain pan 131 of the built-in air conditioner 100. In this configuration, the drain pan 131 includes a water receiving part 131a that receives drain water flowing down from the indoor heat exchanger 115, a drain reservoir 131b that is provided at a lower position than the water receiving part 131a and stores drain water, and these A wall portion 131c connecting the water receiving portion 131a and the drain reservoir 131b is provided, and the lower portion side surface 115A of the indoor heat exchanger 115 is in close contact with the wall portion 131c. Also in this configuration, the sealing material 40 is disposed between the wall 131c and the lower side surface 115A of the indoor heat exchanger 115.
According to this configuration, the drain reservoir 131b can be formed deeply by bringing the lower side surface 115A of the indoor heat exchanger 115 into close contact with the wall 131c. For this reason, a space can be provided between the bottom surface of the drain reservoir 131b and the lower end portion of the indoor heat exchanger 115, and the amount of storage in the drain reservoir 131b can be increased, so that the drain pump is returned. The drain water can suppress the lower end portion of the indoor heat exchanger 15 from being immersed in the drain water.

1 Ceiling-suspended air conditioner (air conditioner)
1a Air conditioner body 12A Casing (housing)
15, 115 Indoor heat exchanger 15A, 115A Lower side surface (side surface portion)
15B Lower end part 31, 131 Drain pan 31a, 131a Water receiving part 31b, 131b Drain pool (storage part)
31b1 Bottom 31c Inclined wall (wall)
131c Wall part 40 Sealing material 51a Water receiving part 100 Embedded ceiling type air conditioner (air conditioner)

Claims (3)

In an air conditioner including an indoor heat exchanger in a housing and a drain pan that is disposed below the indoor heat exchanger and receives drain water flowing down from the indoor heat exchanger,
The drain pan is provided with a water receiving portion that receives the drain water, a storage portion that stores the drain water, and a wall portion that connects the water receiving portion and the storage portion. And
The wall portion is inclined from the water receiving portion toward the storage portion, and the indoor heat exchanger is inclinedly arranged according to an inclination angle of the wall portion, and the wall portion and a side surface of the indoor heat exchanger are arranged. A sealing material having airtightness and water permeability is disposed between the inner wall and the side portion of the indoor heat exchanger is in close contact with the wall portion via the sealing material,
The wall portion is provided in the middle of the flow path of the drain water flowing from the water receiving portion to the storage portion ,
The air conditioner characterized in that the sealing material is disposed only on a wall portion inclined from the water receiving portion toward the storage portion .   The air conditioner according to claim 1, wherein the indoor heat exchanger is disposed with a lower end portion of the indoor heat exchanger spaced apart from a bottom surface of the storage portion.   The air conditioner according to claim 1 or 2, wherein a drain pump that discharges the drain water to the outside of the housing is connected to or disposed in the storage unit.

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