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Valve core of thermostatic expansion valve and the thermostatic expansion valve

A thermal expansion valve and spool technology, applied in the field of thermal expansion valves, can solve the problem of not being able to take into account the stability of the refrigerant flow and adjust the rapid cooling of the air conditioning system at the same time, achieve high adjustment accuracy and stability, and adjust the effect of rapid cooling of the refrigerant

Active Publication Date: 2012-12-12
ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal expansion valve, which can solve the problem that the existing thermal expansion valve cannot simultaneously adjust the stable flow of refrigerant and quickly cool down the air conditioning system.

Method used

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  • Valve core of thermostatic expansion valve and the thermostatic expansion valve
  • Valve core of thermostatic expansion valve and the thermostatic expansion valve
  • Valve core of thermostatic expansion valve and the thermostatic expansion valve

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Embodiment Construction

[0012] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0013] In an embodiment of the present invention, a thermal expansion valve is provided, which includes: a valve body 1 , a valve core 2 , a valve hole 3 , an inlet pipe 4 , an outlet pipe 5 , and a thermal expansion valve axis 6 . Wherein the spool is different from the common conical spool, which includes: at least two spool sections 2a, 2b, for example, can be two sections or can be a larger number of spool sections, connected together in turn, at least two valve sections The outer walls of the core segments 2a, 2b have different tapers. Such as figure 2 As shown, the taper of the spool section refers to the angles between the outer walls of the spool sections 2a, 2b and the axis 6: angle A and angle B respectively.

[0014] Such as figure 2 As shown, preferably, at least two spool sections 2a, 2b are two spool sections, whic...

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Abstract

The embodiment of the invention provides a thermostatic expansion valve, which comprises a valve core (2) of the thermostatic expansion valve. The valve core (2) is communicated with an inlet pipe (4) and an outlet pipe (5) of the thermostatic expansion valve respectively. The valve core (2) of the thermostatic expansion valve comprises at least two valve core sections (2a, 2b) connected together. The outer walls of the at least two valve core sections (2a, 2b) have different tapers. The at least two valve core sections (2a, 2b) are orderly arranged along the flow direction of a refrigerant in the thermostatic expansion valve according to the tapers thereof from small to large. During the stroke change process of the valve core (2), the at least two valve core sections (2a, 2b) regulate the flow quantity of the coolant segmentally. The thermostatic expansion valve realizes the effects of stably adjusting cooling medium and fast reducing temperature.

Description

technical field [0001] The invention relates to the field of refrigeration, in particular to a thermal expansion valve. Background technique [0002] At present, a thermal expansion valve is usually used to control the superheat degree of the gaseous refrigerant at the outlet of the evaporator by adjusting the liquid supply of the evaporator. In practical applications, the regulation of the refrigerant flow rate in the thermostatic expansion valve will be unstable due to the large flow characteristic gain, which will eventually lead to system oscillation. The biggest disadvantage when oscillation occurs is that liquid refrigerant will enter the compressor, causing liquid shock and damaging the compressor. [0003] In the process of realizing the present invention, the inventors found that the flow characteristic gain of the existing thermal expansion valve cannot be adjusted, and if only the method of reducing the flow characteristic gain is used to solve the oscillation pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/12F16K1/36
Inventor 陈江平陈亮徐博张胜昌蔡培裕彭方华
Owner ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT