JPH05346236A - Cooler - Google Patents

Abstract

PURPOSE:To improve heat exchanging efficiency by utilizing dew condensate by a method wherein water absorbing member of an evaporation type air cooler is coated with a covering member which is prominent in the heat conductivity and this covering member is brought into contact with an outdoor side heat exchanger. CONSTITUTION:Dew condensate generated in an indoor heat exchanger 3 is led by a drain pipe 8 to be absorbed, and exposed to an cooling airstream (a) from a fan 2 to be vaporized. As the dew condensate absorbs latent heat during its vaporization, the cooling airstream (a) is cooled, and therefore, cooling effect by the cooling airstream (a) of an outdoor heat exchanger 1 is increased. Thus the efficiency of the heat exchange due to refrigerant condensation of the outdoor heat exchanger 1 can be increased. Further, as a covering member 12 made of a material prominent in the heat conductivity to cover the surface of a water absorbing member 10 is kept in contact with the outdoor heat exchanger 1, heat of the outdoor heat exchanger 1 is transmitted to the dew condensate which has invaded the water absorbing member 10 through the covering member 12, and therefore, the outdoor heat exchanger 1 can be cooled efficiently.

Description

Detailed Description of the Invention

The present invention relates to an improvement of a cooling device provided with an outdoor heat exchanger for condensing a refrigerant by air cooling and an indoor heat exchanger for evaporating the refrigerant from the outdoor heat exchanger.

In this type of cooling device, when heat is exchanged by evaporation of the refrigerant in the air-cooling fin-coil in the indoor heat exchanger, moisture in the room-air is transferred to the outer surface of the fin-coil. Condensation is formed as cold water due to condensation. In the conventional cooling device, this condensed water is collected in a drain pan and discharged from the drain pipe to the outside of the room.The condensed water is not used by being incorporated in the heat exchange cycle of the cooling device and is simply treated as waste. Therefore, the energy was wasted considerably in order to produce the condensed water.

The present invention uses the dew condensation water generated in the indoor heat exchanger, which has been conventionally treated as waste, as an auxiliary energy source for heat exchange by air cooling in the outdoor heat exchanger. It is intended to improve the heat exchange efficiency of the cooling device by effectively utilizing it, and its characteristic is that the dew condensation water generated in the indoor heat exchanger in the air cooling air flow to the outdoor heat exchanger. Is provided with an evaporative air cooler that evaporates the air flow, and the evaporative air cooler is coated with a water absorbing material that permeates the condensed water with a covering material made of a material having good thermal conductivity. And that the coating material has an air hole that allows an air flow to pass therethrough, and the coating material is in contact with the outdoor heat exchanger.

Embodiments of the present invention will be described below with reference to the drawings. In the cooling device of FIG. 1, 1 is a fin
An outdoor heat exchanger consisting of a coil-type refrigerant condenser, which performs heat exchange to condense the refrigerant in the fins / coils outdoors by air cooling, and forcibly applies an air cooling air flow a to the fins / coils. The air blower 2 is provided with a fan for circulating the air so as to blow the air toward it. Further, 3 is an indoor heat exchanger composed of a fin-coil type refrigerant evaporator, which evaporates the refrigerant in the air-cooling fins / coils to perform heat exchange for cooling the indoor air. The fan 4 is provided with a fan for circulating the flow a ′ so as to hit the fin coil. The refrigerant condensed in the outdoor heat exchanger 1 is compressed by the compressor 5, is sent to the indoor heat exchanger 3 through the feed passage 6, and is then evaporated.
It returns to the outdoor heat exchanger 1 through the return path 7. The indoor heat exchanger 3 is provided with a drain pipe 8 that receives dew condensation water generated by condensation of water in the indoor air on the outer surfaces of the fins and coils during evaporation of the refrigerant in a drain pan and then discharges the water to the outside.

In the cooling apparatus according to the present invention, the dew condensation water generated and discharged in the indoor heat exchanger 3 is supplied to the outdoor heat exchanger 1 in the air cooling air flow a. It is provided with an evaporative air cooler 9 for evaporating it. That is, the evaporative air cooler 9 is connected to the drain pipe 8 to guide and evaporate the condensed water generated in the indoor heat exchanger 3.

The evaporative cooler 9 is formed by covering a water absorbing material 10 for permeating dew condensation water with a coating material 12. As the water absorbing material 10, a fiber bundle, felt, sponge or the like can be used. For example, as shown in FIG. 2, the water-absorbing material 10 is suitable so that air can flow to the side of the cooling air flow a blown by the blower 2 to the refrigerant condensing fins and coils of the outdoor heat exchanger 1. A plurality of rows may be provided at different intervals, and the drain pipe 8 may be connected to the water absorbing material 10 via the liquid branch pipe 11 so that the dew condensation water is uniformly permeated and absorbed.

Covering material 12 having air holes such as slits
Is to cover the water absorbent material 10 in a semi-exposed state to protect and reinforce the water absorbent material 10. For example, as shown in FIG. It may be covered so as to be exposed from the air holes 13 of the slits, or as shown in FIG. 3B, the water absorbing material 10 made of fiber bundles may have a plurality of air holes 13 having through holes such as slits in a uniform distribution. 3C, or as shown in FIG. 3C, a water absorbing material 10 made of strip-shaped sponge or felt is covered with a rectangular tube-shaped covering material 12, and an air hole 13 is formed through each of them. It can be installed in the In any case, permeate the condensed water into the water absorbent material 10,
A cooling air flow a is applied to this to evaporate the condensed water. Since the covering material 12 is made of a material having good thermal conductivity such as metal and is in contact with the fins / coils of the outdoor heat exchanger 1, evaporation of condensed water and fins / coils Very advantageous for accelerating the action with cooling.

According to the cooling device having the above structure, the dew condensation water generated in the indoor heat exchanger 3 is introduced from the drain pipe 8 to each water absorbing material 10 of the evaporative air cooler 9 to be permeated and absorbed, and the blower. 2 is applied to the air flow a for air cooling a and evaporated. Since the dew condensation water absorbs latent heat when evaporating, the air cooling air flow a is cooled, and the cooling effect of the outdoor heat exchanger 1 by the air cooling air flow a is enhanced. Therefore, the efficiency of heat exchange for refrigerant condensation in the outdoor heat exchanger 1 is enhanced.

Further, since the coating material 12 made of a material having good thermal conductivity such as a metal covering the surface of the water absorbing material 10 is in contact with the outdoor heat exchanger 1, the heat of the outdoor heat exchanger 1 is increased. Is conducted to the condensed water that has permeated the water absorbing material 10 through the covering material 12, and the outdoor heat exchanger 1 is cooled. Further, since the temperature of the dew condensation water rises and the evaporation amount of the dew condensation water increases, the amount of latent heat taken from the air cooling air flow a increases, and the air cooling air flow a increases.
Is further cooled, and the cooling effect by the air cooling air flow a is further enhanced. Therefore, the present invention is highly effective in reducing the load on the outdoor heat exchanger 1 and enhancing the heat exchange efficiency.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram showing an embodiment of a cooling device of the present invention.

FIG. 2 is a perspective view schematically showing the structure of an evaporative air cooler.

FIG. 3 (A) is a partially cutaway perspective view showing a first embodiment of the water absorbing material and the covering material. (B) It is a partially broken perspective view showing a second embodiment of the water absorbing material and the covering material. (C) It is a partially broken perspective view showing a third embodiment of the water absorbing material and the covering material.

[Explanation of symbols]

 1 Outdoor Heat Exchanger 3 Indoor Heat Exchanger 9 Evaporative Air Cooler 10 Water Absorbing Material 12 Covering Material 13 Air Hole a Air Flow for Air Cooling

Claims (1)

[Claims] 1. An air-cooling air for the outdoor heat exchanger, comprising: an outdoor heat exchanger for condensing the refrigerant by air cooling; and an indoor heat exchanger for evaporating the refrigerant from the outdoor heat exchanger. In a cooling device provided with an evaporative air cooler that evaporates condensate water generated in the indoor heat exchanger against the air flow in the flow, the evaporative air cooler absorbs the condensed water. A coating material made of a material having good thermal conductivity, the coating material having air holes through which the air flow passes, and the coating material A cooling device characterized by being brought into contact with a heat exchanger.