JPH0674629A - Cooling device for condensor - Google Patents

Abstract

PURPOSE:To provide a cooling device for a condenser capable of cooling the condenser with a less consumption amount of water as compared with that of a direct cooling operation and further capable of performing a substantial improvement of a heat exchanging cycle. CONSTITUTION:In a heat exchanging system having a cycle in which a heat absorber 1 is cooled with gasification heat of refrigerant, the refrigerant after its gasification is compressed to generate heat and then the heat is released through the condenser 2, there are provided a cooling water feeding pipe 3 for feeding cold water and an atomization part 4 arranged at a terminal end of the cooling water feeding pipe 3 and for injecting water against the condenser 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condenser cooling device, and more particularly to a heat exchange having a cycle in which a heat absorber is cooled by heat of vaporization of a refrigerant, the vaporized refrigerant is compressed to generate heat, and the condenser radiates the heat. The present invention relates to a device applied to a system.

[0002]

2. Description of the Related Art Conventionally, a heat absorber is cooled by heat of vaporization of a refrigerant,
In a device applied to a heat exchange system having a cycle in which a refrigerant after vaporization is compressed to generate heat and is radiated by a condenser, the condenser is generally air-cooled.

That is, as shown in FIG. 2, a heat absorber 1 in a cooling state, a compressor 5 for compressing the vaporized refrigerant,
The condenser 2 which dissipates the heat of the heated refrigerant is annularly connected by a thermally insulated refrigerant pipe 6. An electric fan 7 is provided near the condenser 2 to forcibly cool the heat of the condenser 2 by air. In this heat exchange cycle, heat is taken from the surroundings by rapidly expanding the volume of the refrigerant in the heat absorber 1, the low-pressure refrigerant is compressed by the compressor 5 to generate heat, and the heat is forcedly cooled by the condenser 2 by the condenser 2. It is dissipated by the fan and acts to liquefy the refrigerant gas.

[0004]

However, in the above-mentioned prior art, since the temperature and humidity of the air are limited and the air is cooled with a small amount of heat,
The coefficient of performance (COP) of the cooler cannot be expected sufficiently. Therefore, the condenser cannot be cooled efficiently, which is a factor that hinders the efficiency of the heat exchange cycle.

Therefore, there is a method in which the condenser is directly cooled by using ground water or the like, but the equipment is large in scale, and a large amount of water is required, so that waste of resources and influence on the environment are concerned. To be done.

The present invention has been made in view of the above matters, and can cool the condenser with a small amount of water consumption as compared with the case of directly cooling, and can greatly improve the efficiency of the heat exchange cycle. It is a technical object to provide such a cooling device for a condenser.

[0007]

In order to solve the above technical problems, the present invention has the following constitution. That is, in the heat exchange system having a cycle in which the heat absorber 1 is cooled by the heat of vaporization of the refrigerant, the refrigerant after vaporization is compressed to generate heat and the heat is dissipated by the condenser 2, a cooling water introduction pipe 3 for introducing cold water.
And a spraying section 4 provided at the end of the cooling water introducing pipe 3 and having a spray port for spraying cold water to the condenser 2. In addition, when the water pressure is low, a pressurizing pump can be provided in the cooling water introduction pipe, if necessary.

Further, the spraying section 4 may be detachably mounted at a portion facing the condenser 2 from the outside with the injection port facing the condenser 2. That is, this device can be easily installed in an existing air conditioner or the like, or can be retrofitted.

[0009]

When the atomized water is sprayed on the condenser 2, the water is rapidly evaporated by the heat of the condenser 2. At this time, the condenser 2 is rapidly cooled by the latent heat of vaporization of water, and the temperature of the refrigerant can be greatly reduced. Therefore, the efficiency of the heat exchange cycle is greatly improved.

Further, since the latent heat of vaporization of water is used, the condenser can be cooled with a small amount of water consumption as compared with the case of direct cooling, the cooling device does not become excessive, and water resources are further reduced. And the power consumption can be saved.

[0011]

EXAMPLE An example of the present invention will be described with reference to FIG.
This device is configured by connecting a heat absorber 1 in a cooling state, a compressor 5 for compressing the vaporized refrigerant, and a condenser 2 for dissipating the heat of the heated refrigerant through a heat insulating pipe 6 in an annular shape. An electric fan 7 is provided near the condenser 2 to forcibly cool the heat of the condenser 2 by air. In this heat exchange cycle, heat is absorbed from the surroundings by rapidly expanding the volume of the refrigerant in the heat absorber 1, the low-pressure refrigerant is compressed by the compressor 5 to generate heat, and the heat is dissipated by the condenser 2. Acts like.

A frame 8 is provided on the back side of the condenser 2 opposite to the electric fan 7. A cooling water introducing pipe 3 for introducing cold water such as tap water or well water is supported on the frame 8, and a spray portion 4 for injecting water to the condenser 2 is provided at the end of the cooling water introducing pipe 3. ing. The spraying section 4 is arranged so that the radiating fin surface of the condenser can be entirely covered by spraying water by the ultrafine particle jetting nozzle attached to the jet nozzle mounting header provided toward the pipe-shaped condenser 2. There is. The longitudinal direction of the condenser 2 is arranged in the vertical direction, and a plurality of pipes are arranged in the lateral direction of the condenser 2 so that extremely fine mist can be sprayed over the entire condenser 2.

The frame 8 is provided with various attachments so that it can be easily attached to and detached from the outdoor unit A in which the condenser 2 is installed, and can be adapted to various types of outdoor units A.

If the water pressure supplied from the cooling water introducing pipe 3 is low, the spray state will be poor, and sufficient evaporation latent heat may not be obtained. In this case, it is preferable to increase the water pressure by providing the pressurizing pump 9 on the cooling water introducing pipe 3.

The operation will be described below. When atomized water is sprayed on the condenser 2, the ultrafine-grained water is rapidly evaporated by the heat of the condenser 2. At this time, the condenser 2 is rapidly cooled by the latent heat of vaporization of water, and the temperature of the refrigerant can be greatly reduced. Therefore, the efficiency of the heat exchange cycle is greatly improved.

By the way, generally, the temperature of water is 15
The temperature of the condenser 2 is 40 to 50 degrees. Normally, in the case of water cooling, the cooling temperature difference is about 5 ° C.
Then, for sensible cooling, 5 kcal with 1 kg of water, that is, 5
The cooling effect is kcal / kg.

In the present invention, in actuality, the spray cooling efficiency due to the contact effect between the fins of the condenser and the spray water must be taken into consideration. However, as compared with the above-mentioned water cooling, ultrafine grained water utilizing latent heat of vaporization is used. In the case of spraying, most of it uses the heat of vaporization, so theoretically the latent heat of vaporization is 580 Kca / kg at a water temperature of 25 degrees, so it is directly cooled with the same weight of water. It is possible to obtain a large cooling effect as compared with the case. As a result, if the ultrafine-grained spray water efficiently reaches the heat dissipation surface of the condenser, condenser cooling similar to the water-cooled condenser method can be expected.

As described above, according to the present invention, the condenser 2 is cooled by utilizing latent heat of vaporization of water.
It is possible to cool the condenser with a water consumption of about several hundredths as compared with the case of directly cooling, and it is possible to save resources.

When the same condenser as the conventional one is used, the cooling capacity can be greatly increased, and if the same condenser is used, the capacity of the condenser can be reduced and the outdoor unit can be made compact. You can

Further, since the efficiency is greatly improved, the power consumption can be reduced and the power load pattern can be leveled.

[0021]

According to the present invention, the condenser can be cooled with much less water consumption as compared with the case of direct cooling, and the efficiency of the heat exchange cycle can be greatly improved.

Further, since it can be easily installed in an existing or new air conditioner or the like or can be retrofitted as an option, it has a wide range of application. The present invention is applicable not only to a residential scale but also to a large-capacity condenser for various facilities with large scale. It can be applied to a cooling device and contributes greatly to energy saving.

[Brief description of drawings]

FIG. 1 is an overall schematic view showing an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a conventional example.

[Explanation of symbols]

 1 ... Heat absorber, 2 ... Condenser, 3 ... Cooling water inlet pipe, 4 ... Spraying unit, 9 ... Pressurizing pump

Claims (2)

[Claims] 1. In a heat exchange system having a cycle in which a heat absorber is cooled by heat of vaporization of the refrigerant, the refrigerant after vaporization is compressed to generate heat and is radiated by a condenser, a cooling water introducing pipe for introducing cold water and the cooling A cooling device for a condenser, comprising: a spraying portion provided at the end of a water introducing pipe, the spraying portion having an injection port for injecting ultrafine grained water into the condenser, and utilizing heat of vaporization of water. 2. The condenser cooling device according to claim 1, wherein the spraying portion is detachably attached to a portion of the spraying portion facing the condenser from the outside, with the injection port facing the condenser.