JPH10205802A - Radiation type air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively recover condensate of a radiation surface of a radiation panel at the time of cooling by providing a thin film having water absorbing properties on the surface of the panel. SOLUTION: A radiation panel 9 is opposed at its radiation surface 9a in a room 15, and at its non-radiation surface 9b to a garret (outdoor) 17. A thin film 19 having water absorbing properties is provided on the surface 9a of the panel 9 to cover substantially entire area. The film 19 is, for example, wound on a plurality of rollers 21 and movable at an arbitrary speed on the surface 9a. The film 19 is made of, for example, fiber having water absorbing properties such as hydrophilized polyester or cupra. Here, when a radiation cooling is executed, condensate is generated on the surface 9a, and this condensate is absorbed by the film 19. Water holding amount of the film 19 is limited. If the amount exceeds its limit, a driving motor 23 is operated to move the part of the film 19 in which moisture is sufficiently absorbed to a garret (outdoor) 17, and evaporated thereat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation type air conditioner, and more particularly, to a technique for preventing dew condensation on a radiation surface by an air flow.

[0002]

2. Description of the Related Art In recent years, a radiant air conditioner has been developed as an air conditioner which replaces a conventional convective air conditioner, in which cooling or heating is performed by a radiant panel disposed on a ceiling or the like of a room to be air-conditioned. ing. In this radiant air conditioner, when the radiant panel is cooled, heat rays from the human body and the like are absorbed by the radiant panel to perform cooling, and when the radiant panel is heated, heat rays from the radiant panel are applied to the human body and the like. Heat is absorbed and absorbed. Generally, such cooling or heating of the radiation panel is performed by a refrigerant pipe disposed in the radiation panel, or by circulating cool air or hot air in the radiation panel.

[0003]

However, the radiation type air conditioner has a problem in that condensation occurs on the radiation surface during cooling operation in summer or the like when the humidity becomes relatively high.

[0004] This is because the temperature of the radiation surface drops below the dew point temperature, and moisture in the indoor air supplied by convection condenses. In addition, such dew condensation on the radiation surface not only causes stains on carpets and furniture due to dripping, but also causes inconvenience such as propagation of various bacteria on the radiation surface.
However, it was not possible to keep the temperature of the radiation surface low without dew condensation occurring, and in practice, the cooling capacity had to be reduced, which did not provide a sufficient cooling effect.

Accordingly, an object of the present invention is to provide a radiant air conditioner capable of effectively collecting dew water on a radiant surface during cooling.

[0006]

According to a first aspect of the present invention, there is provided a radiation type air conditioner for cooling a room by heat radiation from a radiation surface of a radiation panel, wherein the radiation surface of the radiation panel has water absorbency. A thin film body is provided.

According to a second aspect of the present invention, in a radiant air conditioner for cooling a room by heat radiation from a radiant surface of a radiant panel, a thin film having water absorbency is provided on a radiant surface of the radiant panel. The thin film body is formed so as to be movable.

According to a third aspect of the present invention, in a radiant air conditioner for cooling a room by heat radiation from a radiation surface of a radiation panel, a thin film having water absorbency is provided on a radiation surface of the radiation panel. The thin film is formed so as to be movable outside the room, and the moisture absorbed by the thin film is evaporated outside the room.

According to a fourth aspect of the present invention, there is provided a radiation type air conditioner for cooling a room by heat radiation from a radiation surface of a radiation panel using a heat pump circuit, wherein the radiation surface of the radiation panel has water absorption. A thin film body is provided, the thin film body is formed so as to be movable outside, and moisture absorbed by the thin film body is evaporated outside by an outdoor heat exchanger.

According to these inventions, even if dew water is generated on the radiation surface during the cooling operation, the dew water is absorbed by the thin film. There is a limit to the amount of water absorbed by the thin film, and when the limit is exceeded, the thin film is moved out of the room, evaporated outside the room, and then returned to the radiation surface again. You.

[0011]

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, the radiant air conditioner includes a compressor 1, a four-way valve 3, an outdoor heat exchanger 5, a pressure reducing means 7, and a radiant panel 9. As shown in FIG. 1, the radiation panel 9 is disposed on the ceiling of a building 11, and a refrigerant pipe 13 is arranged inside the radiation panel 9 in a meandering shape (see FIG. 2).

Referring to FIG. 1, radiating panel 9 has a radiating surface 9.
a faces the room 15, and the non-radiation surface 9 b faces the back of the ceiling (“outdoor”) 17. A radiating surface 9a of the radiating panel 9 is provided with a water-absorbing thin film 19 covering almost the entire area. The thin film 19 is wound around a plurality of rollers 21, for example. It is configured to be movable at an arbitrary speed in the direction of. 23 is a driving motor.

The thin film body 19 is made of, for example, water-absorbing fibers such as polyester or cupra subjected to hydrophilic treatment. The thin film body 19 is required to have water retention, high thermal conductivity and high emissivity in addition to water absorption. When the thin film body 19 is made of the above-mentioned fiber or the like,
Emissivity is slightly inferior to metals and the like.

If this is a problem, as shown in FIG. 3 or FIG. 4, a cutout 19a is formed in the thin film member 19, and when the thin film member 19 covers the radiation surface 9a, all of the radiation surface 9a is removed. May not be covered.
When not covering the entire radiation surface 9a with the thin film member 19, the dew condensation water is prevented from dropping from the cutout portion 19a.
It is necessary to set the moving speed of the thin film body 19.

Next, the operation will be described. During the cooling operation, referring to FIG. 2, the four-way valve 3 is switched to the position indicated by the solid line. Then, the refrigerant flows through the compressor 1, the four-way valve 3, the outdoor heat exchanger 5, the pressure reducing means 7, and the refrigerant pipe 13 of the radiation panel 9 in this order, and is returned to the compressor 1. According to this, heat is absorbed by the radiation panel 9 and radiation cooling is performed. When the temperature of the radiation panel 9 approaches the dew point temperature, dew condensation occurs, and dew condensation water is generated on the radiation surface 9a. According to this embodiment, the dew water is absorbed by the thin film member 19. However, there is a limit to the amount of water retained in the thin film member 19, and when the amount of water retained exceeds the limit, the driving motor 23 is operated, and as shown in FIG. Body 1
The portion 9 is moved to the ceiling (“outdoor”) 17. The moisture absorbed by the thin film 19 is evaporated at the ceiling 17. The driving motor 23 may be operated intermittently or continuously.

According to this embodiment, since the above-mentioned outdoor heat exchanger 5 constituting a part of the heat pump type circuit is arranged at the rising portion 25 of the thin film member 19, this outdoor heat exchanger 5 The moisture absorbed by the thin film body 19 due to the waste heat is forcibly evaporated at the ceiling 17. What is shown on both sides of the outdoor heat exchanger 5 is a heater 27 for heating.
And the fan 29, and the moisture that has been forcibly evaporated is exhausted to the outside from the vent 31 of the building by the fan 29.

According to this, since the indoor moisture during the cooling operation can be discharged to the outside, a comfortable air-conditioning environment can be created. Further, according to this embodiment, even when the present air conditioner is not used, the indoor humidity can be adjusted by operating the driving motor 23 in an intermediate period or the like. . That is, when the driving motor 23 is operated, the moisture in the room moves to the outside of the room by the movement of the thin film member 19, so that the humidity in the room can be adjusted. For example, a change in relative humidity due to an increase in the number of occupants or a change in temperature can be absorbed, and dew condensation on windows, walls, and the like can be prevented.

During the heating operation, referring to FIG. 2, the four-way valve 3 is switched to the position shown by the dotted line. Then, the refrigerant flows through the compressor 1, the four-way valve 3, the refrigerant pipe 13 of the radiation panel 9, the pressure reducing means 7, and the outdoor heat exchanger 5 in this order, and is returned to the compressor 1. According to this, radiation is performed by the radiation panel 9 to perform radiation heating.

During the heating operation, the moisture moving from the outdoors to the ceiling 17 is absorbed by the thin film 19 located on the ceiling 17, and when the driving motor 23 is operated, the moisture is reduced. Since the air conditioner moves to the indoor side by the movement of the room 19, the humidity in the room is increased, the low humidity during the heating operation can be improved, and a comfortable air-conditioning environment can be created.

Referring to FIG. 2, what is indicated by a dotted line is a decompression means 33 and an indoor heat exchanger 35 as another embodiment. If the indoor heat exchanger 35 is connected in parallel with the radiant panel 9 in this manner, the indoor heat exchanger 35 can be used to perform convective air conditioning of the room by opening and closing the pressure reducing means 33.

Although the present invention has been described with reference to an embodiment, it is apparent that the present invention is not limited to this.

[0023]

According to these inventions, even if dew water is generated on the radiation surface during the cooling operation, the dew water is absorbed by the thin film. There is a limit to the amount of water absorbed by the thin film, and when the limit is exceeded, the thin film is moved out of the room, evaporated outside the room, and then returned to the radiation surface again. You.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a radiation type air conditioner according to the present invention.

FIG. 2 is a diagram showing a refrigerant circuit of the radiant air conditioner.

FIG. 3 is a plan view showing an example of a thin film body.

FIG. 4 is a plan view showing an example of a thin film body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 5 Outdoor heat exchanger 9 Radiation panel 9a Radiation surface 13 Refrigerant piping 15 Indoor 17 Above ceiling ("outdoor") 19 Thin film body 21 Roller 23 Motor for driving

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor's Agency Masayuki 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (4)

[Claims] 1. A radiant air conditioner for cooling a room by heat radiation from a radiant surface of a radiant panel, wherein a radiant air is provided on a radiant surface of the radiant panel. Harmony equipment. 2. A radiant air conditioner for cooling a room by heat radiation from a radiation surface of a radiation panel, wherein a thin film having water absorbency is provided on a radiation surface of the radiation panel, and the thin film is formed movably. A radiation type air conditioner characterized by the following. 3. A radiation type air conditioner for cooling a room by heat radiation from a radiation surface of a radiation panel, wherein a thin film having water absorbency is provided on a radiation surface of the radiation panel, and the thin film is movable outside the room. A radiation type air conditioner characterized in that the moisture absorbed by the thin film is evaporated outside the room. 4. A radiant air conditioner for cooling a room by heat radiation from a radiant surface of a radiant panel using a heat pump circuit, wherein a thin film having water absorbency is provided on the radiant surface of the radiant panel. A radiation type air conditioner, wherein a body is formed to be movable outside a room, and moisture absorbed by the thin film body is evaporated outside the room by waste heat of an outdoor heat exchanger.