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Natural cooling machine room air conditioner and supercooling degree control method thereof

A computer room air-conditioning and natural cooling technology, which is applied to control input related to air characteristics, space heating and ventilation control input, air-conditioning system, etc. It can solve the problems of large refrigerant supercooling and insufficient heat exchange of evaporators, etc.

Inactive Publication Date: 2016-10-12
SHENZHEN ITEAQ NETWORK POWER TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a natural cooling machine room air conditioner and its supercooling degree control method to solve the problems of excessive refrigerant supercooling and insufficient heat exchange of the evaporator in view of the above-mentioned defects of the prior art

Method used

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  • Natural cooling machine room air conditioner and supercooling degree control method thereof
  • Natural cooling machine room air conditioner and supercooling degree control method thereof
  • Natural cooling machine room air conditioner and supercooling degree control method thereof

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Embodiment 1

[0034] Such as figure 1 As shown, in the first embodiment of the natural cooling machine room air conditioner of the present invention, the air conditioner includes a refrigerant pump 1 , a heat exchanger 2 , a restrictor 3 , an evaporator 4 and a condenser 9 connected through pipelines. The refrigerant pump 1 is integrated in the cabinet structure. The air conditioner also includes a regulating valve 7 for controlling the flow of refrigerant flowing into the heat exchanger 2 , and the refrigerant flowing out of the condenser 9 flows to the heat exchanger 2 and the restrictor 3 through the regulating valve 7 . In order to achieve a better regulating effect, two two-way valves are preferentially used for the regulating valve 7; the inlet of the first two-way valve 71 is connected to the output end of the subcooled liquid refrigerant of the condenser 9 through the refrigerant pump 1, and its outlet is connected to the outlet of the condenser 9. The refrigerant liquid inlet port...

Embodiment 2

[0048] Such as Figure 5 As shown, in order to achieve a stable heat exchange effect, the heat exchanger of the air conditioner in the natural cooling machine room in Embodiment 1 is improved, and a partitioned wall heat exchanger using hot water as the heat medium is used. The heat exchanger is provided with a heat exchange box 25, and the refrigerant flows through the heat exchanger liquid inlet 21, the heat exchange box 25, and the heat exchanger outlet 22 in sequence. The box is provided with a hot water inlet 23 and a hot water Exit 24. This type of heat exchanger heats the refrigerant flowing into the heat exchange box by the hot water circulating in the heat exchange box to reduce its subcooling degree.

Embodiment 3

[0050] Such as Image 6 As shown, in order to simplify the structure of the air conditioner, the regulating valve 7 of the first embodiment is improved, and a three-way valve is used to regulate the flow of the refrigerant flowing into the heat exchanger 2 . The regulating valve 7 is a three-way valve; the inlet of the three-way valve 7 is connected to the output end of the supercooled liquid refrigerant of the condenser 9 through the refrigerant pump 1, and the first outlet of the three-way valve 7 is connected to the liquid inlet of the heat exchanger 2 The second outlet is connected to the refrigerant input end of the throttling device 3.

[0051] The air conditioner also includes a controller 8 connected to the temperature sensor 5 , the pressure sensor 6 and the regulating valve 7 . The controller adopts the PID control method to adjust the deviation of the degree of subcooling of the refrigerant flowing into the restrictor 3, so that the actual value of the degree of su...

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Abstract

The invention relates to a natural cooling machine room air conditioner and a supercooling degree control method thereof. The natural cooling machine room comprises a condenser, a refrigerant pump, a flow regulator and an evaporator and further comprises a heat exchanger used for increasing the temperature of a refrigerant at the refrigerant input end of the flow regulator. The heat exchanger is arranged between the refrigerant pump and the flow regulator. Due to the manner that the heat exchanger is arranged before the flow regulator, heat exchange is conducted through the temperature difference to increase the temperature of the refrigerant with the large supercooling degree, the actual supercooling degree is reduced to the target supercooling degree, the refrigerant obtained after flow regulation can be in a two-phase state with gas and liquid mixed, and the distribution uniformity and heat exchange efficiency of the refrigerant in the evaporator are improved.

Description

technical field [0001] The invention relates to the field of air conditioners, and more specifically relates to a natural cooling machine room air conditioner and a method for controlling its supercooling degree. Background technique [0002] In order to maintain a constant indoor temperature in industrial and information computer rooms, one of the characteristics of computer room air conditioners is cooling throughout the year. When the outdoor temperature is lower than the indoor temperature, the outdoor natural cooling source can be directly or indirectly used. Direct use of natural cooling sources will be limited by air quality, geographical location and other conditions; indirect use of outdoor natural cooling sources is currently a common solution for computer room air conditioners. Among them, the natural cooling scheme of fluorine pump circulation is a competitive high-efficiency and energy-saving scheme. Fluorine pump circulation natural cooling air conditioning sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F24F11/00F24F13/30
CPCF24F5/0046F24F13/30F24F11/30F24F11/62F24F11/64F24F2110/00F24F2140/12F24F2140/20
Inventor 曹维兵欧阳超波张健辉游庆生李垂君
Owner SHENZHEN ITEAQ NETWORK POWER TECH CO LTD