Air-condition bidirectional throttle valve with three-time throttling and vibration damping function

Abstract

The invention discloses an air-condition bidirectional throttle valve with a three-time throttling and vibration damping function. A sealed steel ball is installed in a central hole of an upper membrane cover which is located at the top end of the valve; a membrane is installed between the upper membrane cover and a lower membrane cover; a transmission block is installed below the membrane and is fixed to the valve body through a transmission block positioning round plate; a transmission rod, the upper end of which penetrates the transmission block positioning round plate and is connected to a groove of the transmission block, is installed at the central position of the valve body; the lower end of the transmission rod penetrates a liquid outlet and is connected to a tapered valve core; an adjusting spring is connected below the tapered valve core; a ball pad is connected below the adjusting spring; the ball pad is connected to an adjusting seat through three steel balls which are distributed uniformly at left and right. The air-condition bidirectional throttle valve with the three-time throttling and vibration damping function overcomes the problem that the refrigeration capability is balanced difficultly during the bidirectional flow by adding each single-throttling channel at the two ends of the valve opening of the throttle valve, reduces resonant interaction by changing partial structure of the valve core, and overcomes the problems of blockage of an air flow channel, reduced flow area and insufficient temperature induction of an air box head when the valve works in a state of relatively big open degree by changing partial structure of the transmission block.

Description

technical field [0001] The invention relates to an air-conditioning refrigerant throttling control valve, in particular to an air-conditioning two-way throttling valve with three throttling and damping 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 has only one or two throttling during use, and it is difficult to achieve a balance of refrigeration capacity during two-way flow. After adjustment, the flow fluctuates greatly, and the anti-interference ability is weak. For phenomena such as "howling" caused by resonance, once the valve is opened a lot during the adjustment process, the contact between the transmission blo...

AI Technical Summary

Problems solved by technology

The existing throttling mechanism has only one or two throttling during use, and it is difficult to achieve the balance of refrigeration capacity during two-way flow. After adjustment, the flow fluctuates greatly, and the anti-interference ability is weak. Phenomena such as "howling" caused by resonance, once the valve is opened a lot during the adjustment process, the contact between the transmission block and the lower membrane cover will cause the flow channel to be reduced or even cut off, and the diaphragm cannot feel the temperature of the backflow gas in time

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