Bi-direction circulation expansion valve

An expansion valve and two-way valve technology, applied in the field of two-way flow expansion valve, can solve the problems of many parts, many leakage points, complex structure, etc., and achieve the effect of compact structure, improved service life and small volume

Active Publication Date: 2015-02-04
浙江泽顺制冷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This two-way flow expansion valve connects two expansion valve components in parallel, with many parts, complex structure, and difficult assembly; moreover, multiple valve bodies and protective covers are welded and fixed together, and there are too many interfaces between channels or inlets and outlets. More potential leak points, resulting in poorer seals

Method used

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  • Bi-direction circulation expansion valve
  • Bi-direction circulation expansion valve
  • Bi-direction circulation expansion valve

Examples

Experimental program
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Embodiment 2

[0040] like image 3 As shown, of course, the through-hole structure connecting the valve cavity 2a and the inlet cavity 2b between the valve core 8 and the valve seat 7 can also be eliminated, and a gasket 11 is sleeved on the valve core 8 to improve the sealing effect. Pass through the gap where the valve core 8 is pushed open. As for how to achieve the micro-balance of the refrigerant, the inlet 2b of the valve body 2 can be directly connected through the capillary 12, and the two ends of the capillary 12 can be set on the cavity wall where the spring seat 3 is located, or can be set at the interface 1a. In addition, in order to prevent the valve body 2 and the casing 1 from being deformed by the collision of the external force, a protective cover can be installed on the periphery of the casing 1 to play a protective role.

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Abstract

A bidirectionally communicating expansion valve comprises a valve body (2) having two inlet cavities (2b). A first two-way valve assembly and a second two-way valve assembly are disposed inside the valve body (2); valve cavities (2a) of the first two-way valve assembly and the second two-way valve assembly communicate with each other; a first one-way valve assembly is provided between a first outlet (2d) of the first two-way valve assembly and the inlet cavity (2b) of the second two-way valve assembly and used to enable a refrigerant to flow from the first outlet (2d) to the inlet cavity (2b) and then flow to the outside; and a second one-way valve assembly is provided between a first outlet (2d) of the second two-way valve assembly and the inlet cavity (2b) of the first two-way valve assembly and used to enable a refrigerant to flow from the first outlet (2d) to the inlet cavity (2b) and then flow to the outside. The bidirectionally communicating expansion valve has fewer components and a simple structure, and is easily assembled.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and relates to a mechanical automatic expansion valve for frequency conversion air conditioner refrigeration, in particular to a bidirectional flow expansion valve. Background technique [0002] Expansion valves are mainly used in air-conditioning refrigeration systems and are an important part of refrigeration systems. The expansion valve makes the liquid refrigerant of medium, high temperature and high pressure become wet steam of low temperature and low pressure through its throttling, and then the refrigerant absorbs heat in the evaporator to achieve the cooling effect. The phenomenon of insufficient utilization of evaporator area and cylinder knocking occurs. The two-way expansion valve is mainly used in the heating and cooling air-conditioning system. Two expansion valve components are arranged in parallel or in series to realize the two-way flow function. [0003] For example, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B41/06F25B41/31F25B41/38
CPCF16K1/32F25B41/06F16K1/54F16K17/18F25B41/38F25B41/325F25B41/33
Inventor 金耿阮义兵
Owner 浙江泽顺制冷科技有限公司
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