Vapor-liquid sensor

Abstract

The invention discloses a sensor, and provides a vapor-liquid sensor which is high in detection sensitivity and stable and reliable in performance. The vapor-liquid sensor solves the technical problems that in the prior art, detection sensitivity is low, and as floating balls are easily attached to a guide rod, a vapor-liquid sensor fails. The vapor-liquid sensor comprises a valve body and a hollow guide rod with one end packaged in a containing cavity of the valve body, a magnetic switch is arranged at the portion, corresponding to the interior of the valve body, in the hollow guide rod, a floating ball set is connected to the portion, corresponding to the magnetic switch, outside the hollow guide rod in a sliding mode, an input port and an output port are formed in the portions, corresponding to the two ends of the floating ball set, in the containing cavity respectively, the floating ball set comprises a floating sleeve made of a PP material, an annular magnet and a close cover, the hollow guide rod is sequentially sleeved with the floating sleeve, the annular magnet and the close cover, the annular magnet is clamped between the floating sleeve and the close cover, and the portion, between the floating ball set and the valve body, of the hollow guide rod is sleeved with an auxiliary spring.

Description

technical field [0001] The invention relates to a sensor, in particular to a vapor-liquid sensor with stable performance and high sensitivity used in a refrigerant recovery machine. Background technique [0002] There were often no vapor-liquid sensors on the early refrigerant recovery machines, so when there was a lot of liquid refrigerant at the input port of the recovery machine and the input port of the input valve was not adjusted to be small enough, the internal copper pipes would vibrate severely , which is the liquid hammer phenomenon. Once liquid hammer occurs, it is necessary to reduce the opening of the input valve in time, otherwise it will cause crash, motor burnout, compressor piston ring damage, overload protector burnout, etc. Therefore, the operator needs to pay attention to the condition of the meter group at any time during the operation And adjust the input valve in time. In order to improve the degree of automation of the refrigerant recovery machine, ...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly provides a gas-liquid sensor with high detection sensitivity and stable and reliable performance, which solves the technical problems of low detection sensitivity in the prior art, and the floating ball is easy to stick to the guide rod, which leads to the failure of the gas-liquid sensor.

[0005] At the same time, the present invention also provides a gas-liquid sensor with compact structure, small volume and good sealing performance, which solves the problem that the channel of the gas-liquid sensor in the prior art can only be connected externally with copper pipes, which is not only bulky, but also easily occurs. Technical issues such as leakage phenomena

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