Low-voltage, DC and dual electronic expansion valve type refrigerating air-conditioning system

Abstract

The invention relates to the technical field of refrigerating air conditioner, and discloses a low-voltage, DC and dual electronic expansion valve type refrigerating air-conditioning system. The low-voltage, DC and dual electronic expansion valve type refrigerating air-conditioning system comprises a power switch, wherein the output end of the power switch is electrically connected with the input end of a power supply module, and the output end of the power supply module is electrically connected with the input end of a boosting discharging module; the output end of the boosting discharging module is electrically connected with the input end of a CPU, and the output of the CPU is correspondingly electrically connected with the input ends of a cooling water pump, a condenser, a compressor, a cooling fan and an alarming module; the output end of the cooling water pump is electrically connected with the input end of the condenser, and the output end of the condenser is correspondingly electrically connected with the input ends of a second electronic expansion valve and a first electronic expansion valve. With the adoption of the low-voltage, DC and dual electronic expansion valve type refrigerating air-conditioning system, the problem of unstable refrigerating effect can be avoided; the dual protection is provided to the air conditioning system when running, and thus the problem that the air conditioning system stops running in case of the damage of one expansion valve can be solved.

Description

technical field [0001] The invention relates to the technical field of refrigeration and air-conditioning, in particular to a refrigeration and air-conditioning system with low-pressure direct current double electronic expansion valves. Background technique [0002] Air conditioning is the air conditioner, which refers to the process of adjusting and controlling the temperature, humidity, cleanliness and speed of the ambient air in the building by artificial means, generally including cold source and heat source equipment, cold and hot medium transmission and distribution system , several parts of the terminal device and other auxiliary equipment, mainly including fans and pipeline systems, and the terminal device is responsible for using the cold and heat from the transmission and distribution to specifically treat the air so that the air parameters of the target environment meet the requirements. [0003] At present, the existing air-conditioning and refrigeration systems ...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a refrigeration and air-conditioning system with low-voltage direct-current double electronic expansion valves, which has the advantages of low-voltage direct current and stable refrigeration effect, and solves the problem that when the voltage is unstable, the refrigeration effect will be deteriorated and there will be Sometimes cooling, sometimes not cooling problem

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