Refrigerant throttling device with temperature and pressure monitoring function

Abstract

The invention discloses a refrigerant throttling device with a temperature and pressure monitoring function. The refrigerant throttling device comprises a refrigerant throttling device, wherein a low-pressure cut-off switch is arranged above one side of a valve body of the refrigerant throttling device, a refrigeration controller is arranged under one side of the valve body, a signal wire socket is connected under the refrigeration controller, the low-pressure cut-off switch is connected with the refrigeration controller through a low-pressure cut-off signal wire, and the low-pressure cut-off switch is connected with the signal wire socket through another low-pressure cut-off signal wire. The refrigerant throttling device solves the problem that the existing throttling device cannot realize the direct monitoring on the refrigerant temperature and cannot automatically cut off the protection when the air inlet pressure of a compressor is too low, an additional temperature and pressure monitoring device is omitted for the refrigeration system, and the hardware cost and the use space are saved.

Description

technical field [0001] The invention relates to a refrigerant throttling control device, in particular to a refrigerant throttling device with temperature and pressure monitoring functions. Background technique [0002] In the refrigeration system, the throttling mechanism, the compressor, the condenser, and the evaporator are called the "four major parts" of the refrigeration system. They are one of the essential components in the refrigeration system. Controls the flow rate of the evaporator refrigerant and the superheat of the evaporator outlet. The existing throttling mechanism does not have the compressor inlet low pressure protection function and the temperature monitoring function, resulting in the existing refrigeration system requiring additional pressure monitoring devices and temperature monitoring devices to ensure the normal operation of the refrigeration system, which is costly and requires additional The device will take up a lot of space, because the monitor...

AI Technical Summary

Problems solved by technology

The existing throttling mechanism does not have the compressor inlet low pressure protection function and the temperature monitoring function, resulting in the existing refrigeration system requiring additional pressure monitoring devices and temperature monitoring devices to ensure the normal operation of the refrigeration system, which is costly and requires additional The device will take up a lot of space, because the monitoring is limited by the monitoring position, the actual monitoring data is not accurate enough, the compressor fails to stop in time, resulting in frosting of the evaporator, a sudden decrease in the life of the compressor or even damage

Images