A method and device for controlling the closing of a bypass valve of an air-conditioning unit

Abstract

The invention discloses a method, device, equipment and computer-readable storage medium for controlling the closing of a bypass valve of an air-conditioning unit. The method includes: when the bypass valve is in an open state, collecting the first suction pressure at the suction end of a compressor in real time; After the bypass valve is closed, after the first preset time length, the second suction pressure is collected, and it is judged whether the difference between the first suction pressure and the second suction pressure is less than the first preset value, and if so, then Determine that the bypass valve is not closed tightly; control the bypass valve to open, and after the second preset time length, control the bypass valve to close, and return to the execution of collecting the second suction pressure after the first preset time length step until the difference between the first inhalation pressure and the second inhalation pressure is greater than or equal to the first preset value. The above-mentioned technical solution disclosed in the present application can timely detect that the bypass valve is not tightly closed, and when the bypass valve is not tightly closed, it can be closed normally through control in time, so as to reduce waste of resources and avoid temperature rise as much as possible.

Description

technical field [0001] The present invention relates to the technical field of air-conditioning units, and more specifically, to a method, device, equipment and computer-readable storage medium for controlling the closing of a bypass valve of an air-conditioning unit. Background technique [0002] The refrigeration system of the air conditioner mainly includes a compressor, a condenser, a throttling device, an evaporator, and a bypass solenoid valve (bypass valve for short). For details, please refer to figure 1 , which shows the refrigeration schematic of the refrigeration system of the air conditioning unit. Among them, the compressor is used to inhale low-temperature refrigerant gas, compress it into high-temperature and high-pressure refrigerant gas and send it out; the condenser uses the external air sent by the blower to cool the high-temperature and high-pressure refrigerant gas to form a high-pressure refrigerant liquid at room temperature The throttling device uses...

AI Technical Summary

Problems solved by technology

However, when the bypass valve is closed, there may be a situation of lax closure, and this fault cannot be found in time at the initial stage, so maintenance personnel cannot find this fault in time and repair it, and this Continued faults will lead to a decrease in the cooling capacity of the refrigeration system, resulting in a waste of refrigeration resources, and will also cause an increase in the indoor ambient temperature and a decrease in comfort

Images