JP2016080223A - Exhaust cooling device of outdoor machine and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exhaust cooling device of an outdoor machine capable of efficiently lowering the exhaust temperature of the outdoor machine.SOLUTION: An exhaust cooling device 40 cooling exhaust of an outdoor machine 20 of an air conditioning device 1 includes a heat exchanger 30 that heats operating water by heat exchange with refrigerant flowing a refrigerant pipe 2 passing through a condenser 22 of the outdoor machine 20, and an evaporator 31 that further heats the heated operating water by heat exchange with exhaust having cooled the condenser 22 and evaporates the operating water, and then cools exhaust by evaporation latent heat.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an exhaust cooling device and an air conditioner for an outdoor unit.

  An air conditioner such as an air conditioner includes an indoor unit and an outdoor unit. In the summer, the outdoor unit operates as a condenser, and the refrigerant exchanges heat with the outside air to dissipate heat. In order to promote heat dissipation in the outdoor unit, Patent Document 1 discloses an auxiliary cooling device for an outdoor unit that detects the operation state of the outdoor unit from the temperature change of the refrigerant pipe and sprays water on the outdoor unit or its surroundings. Yes.

JP2013-234830A

  However, like the above-described conventional auxiliary cooling device, when water is sprayed on the outdoor unit and its surroundings, there is a problem that corrosion and scale accumulation are likely to occur due to water splashing on the heat radiation fins of the outdoor unit.

  In addition, when multiple outdoor units are installed in a facility such as an office building, the outdoor units tend to be crowded due to the problem of installation space. As a result, the suction temperature becomes high and the cooling capacity may be lowered. In this case, in the conventional auxiliary cooling device, it is difficult to sufficiently reduce the exhaust temperature of the outdoor unit, and this countermeasure has been required.

  Accordingly, an object of the present invention is to provide an exhaust cooling device and an air conditioner for an outdoor unit that can efficiently reduce the exhaust temperature of the outdoor unit.

  The object of the present invention is an apparatus for cooling the exhaust of an outdoor unit of an air conditioner, and heat exchanger that heats working water by exchanging heat with a refrigerant flowing through a refrigerant pipe passing through the condenser of the outdoor unit. And the heated working water is further heated and evaporated by heat exchange with the exhaust air cooled by the condenser, and a vaporizer for cooling the exhaust gas by the latent heat of vaporization. The

  In the outdoor unit exhaust cooling apparatus, the heat exchanger is preferably arranged so that the refrigerant is introduced into the condenser after exchanging heat with the working water.

  In addition, the object of the present invention is an air conditioner including an outdoor unit having a condenser and an indoor unit having an evaporator, wherein the working water is exchanged by heat exchange with a refrigerant flowing through a refrigerant pipe passing through the condenser. An air conditioner further comprising: a heat exchanger that heats the heated working water, and further evaporates the heated working water by heat exchange with the exhaust that has been air-cooled from the condenser, and cools the exhaust by latent heat of vaporization. Achieved by the device.

  In this air conditioner, the working water is preferably condensed water generated in the indoor unit.

  According to the present invention, it is possible to provide an exhaust cooling device and an air conditioner for an outdoor unit that can efficiently reduce the exhaust temperature of the outdoor unit.

It is a schematic block diagram of the air conditioning apparatus which concerns on one Embodiment of this invention. It is a schematic block diagram of the air conditioning apparatus which concerns on other embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of an air-conditioning apparatus according to an embodiment of the present invention. As shown in FIG. 1, the air conditioner 1 includes an indoor unit 10 and an outdoor unit 20. The indoor unit 10 includes an evaporator 11 and a blower 12, and the outdoor unit 20 includes a compressor 21, a condenser 22, an expansion valve 23, and a blower 24. The evaporator 11, the compressor 21, the condenser 22, and the expansion valve 23 are connected by the refrigerant pipe 2 to form a refrigerant circuit. During the cooling operation in summer, the evaporator 11, the compressor 21, and the condenser By cooling the refrigerant such as Freon in the order of 22 and the expansion valve 23 and operating the blowers 12 and 24, the room can be cooled.

  In the outdoor unit 20 of the present embodiment, the heat exchanger 30 interposed in the refrigerant pipe 2 between the compressor 21 and the condenser 22 and the exhaust E that has cooled the condenser 22 by the operation of the blower 24 pass therethrough. And an exhaust cooling device 40 including a transpiration device 31 arranged in the

  The heat exchanger 30 exchanges heat between the gaseous refrigerant flowing through the refrigerant pipe 2 and the working water. The working water is condensed water generated by condensing moisture contained in the air cooled by the evaporator 11 in the indoor unit 10 by the surface of the refrigerant pipe 2 or the heat radiation fins of the condenser 11. Condensed water (working water) generated in the indoor unit 10 is collected in the tank 32 via the drain pipe 3, and the supply amount from the tank 32 to the heat exchanger 30 is controlled by adjusting the opening degree of the on-off valve 33. . Although the structure of the heat exchanger 30 is not specifically limited, For example, a shell and tube type and a plate type can be mentioned.

  The working water heated by heat exchange with the refrigerant in the heat exchanger 30 is supplied to the evaporator 31 via the supply pipe 4. The configuration of the evaporator 31 is not particularly limited, but is preferably a vaporization type that holds the working water in the holding body and vaporizes it by blowing air, for example, a tube (holding body) made of a moisture permeable membrane that allows only water vapor to pass through. Supply the working water to the inside, supply the exhaust from the condenser 22 to the outside of the tube to vaporize the working water, or impregnate the filter (holding body) by dropping the working water. A drop osmosis type in which the filter is evaporated through the exhaust from the condenser 22 can be preferably exemplified. Since the working water supplied to the evaporator 31 has no possibility of coming into contact with the radiation fins of the evaporator 22, corrosion of the evaporator 22 and scale problems can be prevented.

  In the air conditioner 1 having the above configuration, the refrigerant flowing through the refrigerant pipe 2 absorbs heat in the evaporator 11 of the indoor unit 10 and radiates heat in the condenser 22 of the outdoor unit 20 as in the conventional air conditioner. To cool the room. Then, by providing the exhaust cooling device 40 including the heat exchanger 30 and the evaporator 31, the working water heated by heat exchange with the refrigerant in the heat exchanger 30 air-cooled the condenser 22 in the evaporator 31. It is further heated and evaporated by heat exchange with the exhaust E. Since the temperature of the exhaust E decreases due to this latent heat of vaporization, the temperature rise around the outdoor unit 20 is suppressed, and the suction temperature of the condenser 22 is reliably prevented from becoming high, and the air conditioning apparatus 1 is cooled. Can be performed stably.

  As an example, when the outside air temperature was 30.5 ° C. (humidity: 60% RH), the temperature change of the exhaust E when the air conditioner 1 of this embodiment was operated was measured. The temperature of the exhaust E which exchanged heat with the refrigerant in the condenser 22 increased to 50 ° C. (humidity: 20% RH) by operation, but the temperature of the exhaust E after passing through the evaporator 31 was 28 ° C. (humidity: 75). % RH), which was lower than the outside temperature. On the other hand, the working water rose from 7 ° C. to 40 ° C. before and after introduction into the heat exchanger 30, and the subsequent evaporation of the working water in the evaporator 31 was promoted.

  As mentioned above, although one Embodiment of this invention was explained in full detail, the specific aspect of this invention is not limited to the said embodiment. For example, in the present embodiment, the heat exchanger 30 is interposed in the refrigerant pipe 2 between the compressor 21 and the condenser 22, and the gaseous refrigerant is introduced into the condenser 22 after exchanging heat with the working water. However, the arrangement of the heat exchanger 30 is not necessarily limited to this embodiment. For example, as shown in FIG. 2, the heat exchanger 30 is disposed between the condenser 22 and the expansion valve 23. The refrigerant condensed in the condenser 22 may be configured to exchange heat with the working water.

  Moreover, although the exhaust water E is efficiently cooled by using the condensed water which generate | occur | produced in the indoor unit 10 in this embodiment, the working water operates the water etc. which were supplied from other water sources, such as a tap water. It can also be used as water.

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 2 Refrigerant pipe 10 Indoor unit 11 Evaporator 20 Outdoor unit 22 Condenser 30 Heat exchanger 31 Evaporator 40 Exhaust cooling device

Claims (4)

A device for cooling the exhaust of an outdoor unit of an air conditioner,
A heat exchanger that heats the working water by heat exchange with the refrigerant flowing through the refrigerant pipe passing through the condenser of the outdoor unit;
An exhaust cooling device for an outdoor unit comprising: a heated evaporator that further heats and evaporates the heated working water by heat exchange with the exhaust air cooled by the condenser and cools the exhaust gas by the latent heat of evaporation.   The exhaust cooling device for an outdoor unit according to claim 1, wherein the heat exchanger is arranged so that the refrigerant is introduced into the condenser after exchanging heat with working water. An air conditioner comprising an outdoor unit having a condenser and an indoor unit having an evaporator,
A heat exchanger that heats the working water by heat exchange with the refrigerant flowing through the refrigerant pipe passing through the condenser;
An air conditioner further comprising a vaporizer for further heating and evaporating the heated working water by heat exchange with the exhaust air from which the condenser is air-cooled, and cooling the exhaust gas by latent heat of evaporation.   The air conditioner according to claim 3, wherein the working water is condensed water generated in the indoor unit.

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