Big supercooling degree machine room air conditioner

Abstract

The invention discloses a big supercooling degree machine room air conditioner. A condenser consists of two parallel condenser tubes; and a supercooler is positioned between the two parallel condensertubes of the condenser. The refrigeration cycle comprises that: a refrigerant is converted into high-temperature high-pressure gas by the compressor, enters the two parallel condenser tubes of the condenser to exchange heat with air and enters a high-pressure liquid reservoir; the refrigerant flowing out of the high-pressure liquid reservoir enters a supercooler for supercooling heat exchange andbecomes the refrigerant with a big supercooling degree; the refrigerant with the big supercooling degree is throttled by an expanding valve and enters an evaporator for heat exchange; and finally therefrigerant is returned to the compressor to complete the whole refrigeration cycle. Because the refrigerant is supercooled after the high-pressure liquid reservoir, the problem that the supercoolingdegree is lowered because the conventional refrigerant is supercooled and then enters the high-pressure liquid reservoir is effectively solved; and because of the big supercooling degree, the refrigerant does not bubble when passing the expanding valve, the operating stability and reliability of the expanding valve are improved, and the refrigerating capacity and the refrigerating energy efficiency of the system are also improved.

Description

Technical field: [0001] The invention relates to a machine room air conditioner, in particular to a machine room air conditioner with a large supercooling degree. Background technique: [0002] At present, the vast majority of computer room air-conditioning systems do not have subcooling equipment, and a small number of systems are equipped with subcoolers. The location of the subcooler often greatly affects the actual subcooling effect of the system. This will bring a series of problems, such as unstable expansion valve, low cooling energy efficiency ratio EER, insufficient cooling capacity, etc. These all affect the use effect of the computer room air conditioner to a certain extent. Invention content: [0003] In order to overcome the shortcomings of the prior art, such as the unstable operation of the expansion valve, low refrigeration energy efficiency ratio, and insufficient cooling capacity, the present invention provides a computer room air conditioner with a larg...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the prior art, such as the unstable operation of the expansion valve, low refrigeration energy efficiency ratio, and insufficient cooling capacity, the present invention provides a computer room air conditioner with a large subcooling degree, which can effectively increase the system supercooling degree and improve Self-operating conditions; increase cooling capacity and improve system cooling energy efficiency ratio (EER)

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