JPH09112949A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a low-cost air conditioner and to perform the sufficient heat insulation effect without absorbing the condensate into a heat insulator by laminating the insulator on the outer surface of a drain pan, and forming the insulator of two-layer type of closed cell foam heat insulator and open cell foam heat insulator. SOLUTION: A drain pan 4 for receiving the condensate condensed by a heat exchanger 2 is disposed under the exchanger 2. Closed cell foam heat insulator 9 having relatively high hardness is laminated on the outer surface of the pan 4, and an open cell foam heat insulator 10 of relatively soft urethane foam is laminated on the outer surface in a two-layer type. Accordingly, even if the surface temperature of the pan 4 is lowered, or the steam in the air in the insulator 9 is condensed by the closed cell foam insulator 9, the insulator does not absorb the air of high temperature and high humidity from the periphery due to the closed cell foam insulator but heat insulating performance can be performed. Accordingly, the surface of the open cell foam insulator 10 of the outside is not condensed, but sufficient heat insulating effect is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an air conditioner such as a fan coil unit which has a simple mechanism in which condensed water is not absorbed in a heat insulating material and a heat insulating effect can be sufficiently exerted. Is.

[0002]

2. Description of the Related Art Conventionally, in an air conditioner of a fan coil unit, a drain pan penetrates the main body in order to connect a hot / cold water pipe to a heat exchanger in a main body casing and simplify the cold insulation work of the connecting portion. It is extended to the lower part of the connection part to ensure that it receives condensate water that adheres to the part where the insulation is insufficient and drains it. FIG. 5 shows an embodiment of a conventional air conditioner. In FIG. 5, reference numeral 1 is a main body of the air conditioner, in which a heat exchanger 2 and a blower 3 are arranged, a drain pan 4 is arranged below the heat exchanger 2, and condensed water condensed by the heat exchanger is The drain pan is used to receive water. In order to prevent dew condensation on the surface of the drain pan 4 even when the dew condensation water of the drain pan 4 has a high outside temperature, a relatively soft foam material such as urethane foam is attached to the outer surface of the drain pan 4. In addition, at a position below the heat exchanger in the main body, a chamber 5 for forming left and right blowing air passages
And a panel 6 is disposed below the chamber 5 so that it can be attached to the ceiling 7.

[0003]

In the conventional air conditioner described above, since a relatively soft open-cell heat insulating material is attached to the outer surface of the drain pan 4 penetrating the main body 1,
If the drain pan through hole of the main body 1 is formed smaller than the size including the drain pan heat insulating material, the drain pan through portion can be reliably sealed and the main body penetrating work for attaching the drain pan 4 can be easily performed. However, since a relatively soft open-cell heat insulating material is directly attached to the outer surface of the drain pan 4, the cold water temperature is particularly low (about 5 ° C.), the fan operation is stopped, and only cold water is passed for a long time. If
When the ambient temperature and humidity are high, the air in the heat insulating material is cooled at the drain pan sticking part of the heat insulating material stuck to the surface of the drain pan 4, the water vapor in the air is condensed, and the volume is sharply reduced to lower the pressure. Therefore, in order to keep the pressure balance, the surrounding air is sucked into the heat insulating material more and more and is sequentially condensed in the heat insulating material, and finally the heat insulating material on the surface of the drain pan 4 is completely absorbed. In this state, the heat insulating effect is not exerted, and there is a problem that dew condensation on the drain pan causes water droplets to fall out of the drain pan, wet the ceiling, and the condensed water drops from the panel. Here, it is conceivable to use a closed-cell heat insulating material having a relatively high hardness as the heat insulating material attached to the surface of the drain pan 4, but in this case, it is difficult to penetrate the drain pan into the main body. If the drain pan through hole of the main body is made large to improve the work, the airtightness is deteriorated. The present invention provides an air conditioner that solves the problems of the conventional air conditioners described above, can be manufactured at low cost, and is capable of sufficiently exhibiting a heat insulating effect without dew condensation water being absorbed in the heat insulating material. The purpose is to

[0004]

In order to achieve the above object, an air conditioner of the present invention has a drain pan below a heat exchanger arranged in a casing of the air conditioner, and the drain pan is a main body box. An air conditioner configured to penetrate through the body is characterized in that a heat insulating material is attached to the outer surface of the drain pan, and the heat insulating material is a two-layer type of a closed cell insulating material and an open cell.

The air conditioner of the present invention having the above-mentioned structure has a closed-cell heat insulating material such as polyethylene having a relatively high hardness and an open-cell heat insulating material such as urethane foam having a relatively high hardness on the outer surface of the drain pan. Since it is arranged as a two-layer type, the heat insulating performance is improved and the mounting work can be easily performed.

In this case, the cross-sectional shape of the drain pan can be V-shaped.

The air conditioner of the present invention having the above-mentioned structure can surely discharge drain water.

In this case, the closed-cell heat insulating material of the two-layer type heat-insulating material is directly attached to the outer surface of the drain pan, and the continuous-cell soft insulating material is attached to the outer surface of the closed-cell insulating material. You can

The air conditioner of the present invention having the above structure can be surely attached to the drain pan integrally, and the heat insulating effect is also improved.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an air conditioner of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an air conditioner main body having a required capacity, and inside the air conditioner main body, a heat exchanger 2 and a blower 3 are opposed to each other as shown in the figure, or air blown from the blower blows the heat exchanger. The drain pan 4 is disposed below the heat exchanger 2 so as to receive the condensed water condensed by the heat exchanger 2, and the drain pan 4 penetrates up to the main body box. Is configured as follows. On the outer surface of the drain pan 4, a heat insulating material having a two-layer structure of a closed cell insulating material having a relatively hard hardness and an open cell insulating material such as a relatively soft urethane foam is attached. Further, a chamber 5 that constitutes a left and right blowing air passage is inserted into the main body so that the air sent from the blower is guided to the chamber 5 through a heat exchanger, and a panel 6 is provided at the lower portion. And the panel 6 is attached to the ceiling 7.

2 and 3 are sectional views showing a heat insulating material attached to the outer surface of the drain pan 4. The heat insulating material is a closed cell heat insulating material 9 having a relatively high hardness, and a relatively soft hardness. It is composed of an open-cell heat insulating material 10. The heat insulating material 9 is made of closed-cell polyethylene or the like having a relatively high hardness, and is directly attached to the outer surface of the drain pan 4. Further, the insulating material 10 having open cells having relatively soft hardness
Is made of urethane foam or the like and is attached to the outer surface of the heat insulating material 9.

Even if these two kinds of heat insulating materials 9 and 10 are not attached to each other, the two heat insulating materials, that is, the independent air insulating material 9 having a relatively hard hardness and the continuous air insulating material 10 having a relatively soft hardness, are used. Alternatively, the layers may be integrally formed, cut into a desired shape, and attached at one time. FIG.
In this example, a continuous-cell heat insulating material is attached to the surface of the drain pan 4, a closed-cell heat insulating material is attached to the surface thereof, and an open-cell thermal insulating material is further attached to the surface thereof.

In the above-described attachment of the heat insulating material to the drain pan, when the open cell heat insulating material is attached to the outer surface of the drain pan, the closed cell heat insulating material is attached to the surface. Alternatively, the object can be achieved by pasting air-tight tapes and then pasting open-cell heat insulating material on the surface thereof.

In such a structure, even if the surface temperature of the drain pan is lowered, since the heat insulation material of the closed cells is attached, even if the water vapor in the air inside the heat insulation material is condensed, it is higher than the ambient temperature due to the closed cells. Without sucking in moist air
Since the heat insulating performance can be exhibited, dew condensation does not occur on the surface of the heat insulating material 10, and the assembling workability and the sealing property are also improved. Also in the configuration shown in FIG. 4, since there is a closed-cell heat insulating material in the middle, the same effect as described above can be obtained.

[0015]

According to the air conditioner of the present invention, in an air conditioner having a heat exchanger and a drain pan, the drain pan penetrating the main body box body, a heat insulating material attached to the surface of the drain pan. Since the closed-cell heat insulating material and the continuous-cell heat insulating material are used respectively, the drain pan penetration portion is kept airtight without condensation on the drain pan heat insulating material, and the assembling workability is improved.

Further, according to the air conditioner of the present invention, since the V-shaped drain pan is used in cross section, it can be manufactured at low cost.

Further, according to the air conditioner of the present invention, the air conditioner can be surely attached to the drain pan integrally, and the heat insulating effect is also improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of an air conditioner of the present invention, (a) is a longitudinal sectional view, and (b) is a front view.

FIG. 2 is a sectional view showing a drain pan of the air conditioner of the present invention.

FIG. 3 is a sectional view showing a drain pan of the air conditioner of the present invention.

FIG. 4 is a cross-sectional view showing a drain pan of the air conditioner of the present invention.

FIG. 5 is a configuration diagram showing a conventional air conditioner, in which (a) is a longitudinal sectional view and (b) is a front view.

[Explanation of symbols]

 1 Air conditioner main body 2 Heat exchanger 3 Blower 4 Drain pan 9 Insulating material with closed cells 10 Insulating material with continuous cells

Claims (3)

[Claims] 1. An air conditioner having a drain pan below a heat exchanger arranged in a casing of the air conditioner, the drain pan penetrating to a main body box, wherein the outer surface of the drain pan is thermally insulated. The air conditioner is characterized in that the heat insulating material is a two-layer type including closed-cell insulating material and open-cell material as well as pasting the material. 2. The air conditioner according to claim 1, wherein the drain pan has a V-shaped cross section. 3. A double-layered heat insulating material, wherein the closed-cell heat insulating material is directly attached to the outer surface of the drain pan, and the closed-cell heat insulating material is attached to the outer surface of the open-cell soft insulating material. The air conditioner according to claim 1 or 2.