A thermal expansion valve

A thermal expansion valve and valve core technology, applied in the field of thermal expansion valves, can solve problems such as complex structure and high requirements for valve body processing technology, and achieve the effect of simplified processing technology, simple and reliable processing technology
CN103423926BActive Publication Date: 2016-08-17ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO LTD SHAOXING CITY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS CO LTD SHAOXING CITY
Publication Date
2016-08-17

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Abstract

The invention discloses a thermal expansion valve with a one-way control function, which comprises a valve body (1), a temperature-sensing component (2), and a first valve core component ( 4), the first valve core part (4) includes a valve stem (41) and a first valve core (42), and the valve body (1) is also provided with a housing part, and a cover body ( 5), the inner hole (16) of the cover body (5) communicates with the inlet channel (11) and the inner cavity (13) to form a fluid auxiliary channel. Compared with the prior art, the belt The thermal expansion valve with one-way control function simplifies the processing technology of the valve body by providing a cover body on the valve body. And in the preferred solution, the valve port and sealing position can be processed at one time by stretching, and the guiding part or restricting part is set by stamping, which makes the processing process simpler and more reliable, and is suitable for mass production.
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Description

technical field

[0001] The invention belongs to a refrigeration control system, in particular to a thermal expansion valve with a single control function used in an air conditioning system. Background technique

[0002] Thermal expansion valves are usually used in heat pump control systems. In heat pump control systems, the refrigerant can generally flow in reverse to achieve the functions of cooling and heating. The thermal expansion valves in the prior art are generally set in one direction, and the one-way valve is set on the external bypass. to the valve. When the system flows forward, the one-way valve is closed, and the medium is throttled through the expansion valve. When the system is flowing in the reverse direction, the one-way valve is opened, and the medium flows through the one-way valve. But the separate one-way valve and bypass channel Will increase installation costs and maintenance costs, the potential for leakage will increase.

[0003] Therefore, in rece...

Claims

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