A supercooling device applied to a natural cold source maglev refrigeration system

Abstract

The invention discloses a supercooling device for a magnetic suspension refrigerating system with a natural cold source. The supercooling device comprises an evaporator, a magnetic suspension compressor, a primary supercooling section and a secondary supercooling section; an outlet of the evaporator is connected with an air suction port of the magnetic suspension compressor; the primary supercooling section comprises a coiled pipe of a refrigerant system and a coiled pipe of the natural cold source, a part of condenser pipes in the coiled pipe of the natural cold source is used as a primary supercooling pipe, an exhaust port of the magnetic suspension compressor is sequentially communicated with the coiled pipe of the refrigerant system and the primary supercooling pipe, and the remaining condenser pipes of the coiled pipe of the natural cold source are used for cooling refrigerating media; a liquid outlet of the primary supercooling pipe is sequentially connected with the secondary supercooling section and an inlet of the evaporator by pipelines; and a branch is arranged at the liquid outlet of the primary supercooling pipe and is connected with a cooling inlet of a motor of the magnetic suspension compressor. The supercooling device has the advantages that the supercooling device is simple and reliable in structure, the purpose of secondary supercooling is realized, a high degree of supercooling can be realized, the refrigerating capacity of unit refrigerants is improved, the refrigerant charge and consumption of copper pipes of a heat exchanger are reduced, and the energy efficiency of a unit is improved.

Description

technical field [0001] The invention belongs to air-conditioning refrigeration technology, in particular to a refrigeration compressor and a natural cold source combined chiller. Background technique [0002] With the promulgation of national energy conservation and emission reduction policies, the use of second cold sources and natural cold sources has become one of the main energy-saving means in the air-conditioning industry, especially in the field of computer room air-conditioning, because data centers have cooling needs throughout the year, in transitional seasons and winter The energy saving effect of using natural cold source will be more significant. [0003] The cooling demand of data centers generally comes from the cooling needs of IT equipment. Data centers that use chilled water generally exchange heat between the chilled water in the chilled water equipment and the air in the computer room, so as to achieve cooling in the computer room and increase the water t...

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Problems solved by technology

[0008] To control the condensing temperature and increase the subcooling method, under the conditions of the existing heat exchange technology, it is generally necessary to increase the area of ​​the heat exchange coil correspondingly, generally it is necessary to deepen the number of rows, or increase the windward area , but deepening the number of rows will increase the cost of the heat exchanger, and increasing the windward area will make the structure of the unit larger, and the increase in the windward area will also reduce the wind speed on the face, so that the heat transfer on the air side will also be weakened

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