Light load dehumidification refrigeration method and device

Abstract

The invention provides a light load dehumidification refrigeration device. During refrigeration and dehumidification, a port D of a reversing valve (6) communicates with a port C of the reversing valve (6), a port E of the reversing valve (6) communicates with a port S, and the open degree of an electronic expansion valve (8) is controlled according to a superheat degree value; during dehumidification at a constant temperature, the revolving speed of an outdoor fan (9) is controlled according to the temperature of wind entering an evaporator (3) so as to decrease the revolving speed of the outdoor fan (9), and the open degree of the electronic expansion valve (8) is controlled according to the evaporation pressure; and the port D of the reversing valve (6) communicates with the port E, the port C communicates with the port S, a 1 portion (5) of the evaporator cools a liquid refrigerant output by the reversing valve (6), and a 2 portion (7) of the evaporator cools and dehumidifies indoor air.

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a light-load dehumidification and refrigeration method and device. Background technique [0002] Precision air conditioner refers to the precision air conditioner dedicated to the computer room that can fully meet the environmental conditions of the computer room. It is a new model that has been gradually developed in the past 30 years. Computer equipment and program-controlled switch products are placed in the computer room, which is composed of a large number of dense electronic components. To improve the stability and reliability of these devices, it is necessary to strictly control the temperature and humidity of the environment within a specific range. When comfortable air conditioners were used in early computer rooms, problems such as unstable operation of equipment in the computer room, interference with data transmission, and static electricity often oc...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a light-load dehumidification and refrigeration method and device. In the case of constant temperature dehumidification, by switching the flow direction of the refrigerant between the electronic expansion valve and the evaporator 1 and the evaporator 2, the existing problem is solved. The technical problems of redundant equipment and complex refrigerant flow paths in the equipment reduce the number of electronic expansion valves, and achieve the technical effect of simple and low-cost constant temperature dehumidification on the basis of refrigeration and dehumidification functions

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