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Two-way thermal expansion valve

A thermal expansion valve and spool technology, applied in the direction of valve lift, valve device, valve details, etc., can solve the problems of low reliability, same supply, increased cost, etc., achieve small difference in system superheat, reduce system Superheat difference, effect of steady centered movement

Active Publication Date: 2019-10-29
EMERSON CLIMATE TECH (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since a single thermostatic expansion valve cannot provide the same system superheat degree under cooling and heating conditions, it is necessary to set up two thermostatic expansion valves, which are used for cooling and heating respectively, but this increases the cost and increases the possibility of failure
[0006] In addition, the existing thermal expansion valve has many parts and complex structure, so the manufacturing and assembly costs are high and the reliability is low

Method used

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Examples

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Embodiment Construction

[0039] The following description of the preferred embodiments is exemplary only, and not limiting of the invention and its application or usage.

[0040] The directions of "up", "down", "top" and "bottom" mentioned in the following description are only relative to the orientation of the thermal expansion valve shown in the drawings, and can vary with the orientation of the thermal expansion valve. change in actual direction.

[0041] The following will refer to figure 1 and figure 2 A refrigeration system employing a bidirectional thermal expansion valve according to the present invention and its working principle are described.

[0042] In refrigeration conditions, such as figure 1 As shown, the compressor 100 discharges high-temperature and high-pressure liquid refrigerant (working medium), and the refrigerant enters the first heat exchange coil 104 (as a condenser) after passing through the four-way reversing valve 102 to become a low-temperature and high-pressure refri...

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Abstract

The invention relates to a two-way thermal expansion valve, which includes: a drive assembly, a main valve body assembly and an adjustment assembly. The main valve body assembly includes a valve housing and a valve core accommodated in the valve housing. The valve housing includes a first end secured to the drive assembly and an opposite second end secured to the regulator assembly, the valve housing including first and second chambers separated by a seat portion. The spool includes a first end operatively connected to the drive assembly and an opposite second end operatively connected to the adjustment assembly, the second end is located in the second cavity, and the spool includes an abutment portion cooperating with the seat portion . Wherein, the valve casing further includes a back pressure chamber located between the driving assembly and the first end of the valve core, and the main valve body assembly includes a channel configured to make the back pressure chamber and the second chamber fluidly communicate with each other.

Description

technical field [0001] The invention relates to a two-way thermal expansion valve. Background technique [0002] The thermal expansion valve is a key component to control the superheat of the system in the refrigeration system. It is generally installed between the liquid storage cylinder and the evaporator. It realizes the pressure drop from the condensing pressure to the evaporating pressure, which directly determines the operating performance of the entire system. [0003] The thermal expansion valve senses the temperature at the end of the evaporator through the temperature sensing package, thereby adjusting the opening of its orifice, thereby controlling the mass flow rate of the refrigerant flowing into the evaporator and adjusting the end temperature of the evaporator to ensure the flow of gaseous refrigerant. into the compressor to realize the safe operation of the compressor under reasonable evaporation efficiency. [0004] In the thermal expansion valve of the pri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/00F16K1/36F16K27/02F25B41/06F25B41/36
Inventor 万东东陈荣彬韩荣耀
Owner EMERSON CLIMATE TECH (SUZHOU) CO LTD
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