Four-way reversing valve and pilot valve body thereof

A technology of four-way reversing valve and pilot valve, applied in multi-way valves, valve details, valve devices, etc., can solve problems affecting people's comfort, room or office temperature reduction, etc., to achieve a comfortable living environment and office environment , maintain the indoor ambient temperature, the effect of good indoor ambient temperature

CN107289152AActive Publication Date: 2017-10-24ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-10-24

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Abstract

The invention discloses a four-way reversing valve and a pilot valve body thereof. The four-way reversing valve comprises a high-pressure pipeline A, a low-pressure pipeline C, a first switchover pipeline B and a second switchover pipeline D, wherein at a first working station, the high-pressure pipeline A communicates with the second switchover pipeline D and the low-pressure pipeline C communicates with the first switchover pipeline B; and at a second working station, the high-pressure pipeline A communicates with the first switchover pipeline B and the low-pressure pipeline C communicates with the second switchover pipeline D. The four-way reversing valve is characterized by further comprising a third working station, and the high-pressure pipeline A communicates with the low-pressure pipeline C at the third working station. By adoption of the four-way reversing valve and the pilot valve body thereof, the pressure on the high-pressure and low-pressure sides of a system can be quickly balanced, thereby enabling the system to enter the equal-pressure state; and accordingly, the purpose of defrosting by utilizing a high-temperature refrigerant can be fulfilled without switching the working states.
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Description

technical field

[0001] The invention relates to the technical field of refrigeration or heating by means of refrigerants, in particular to a four-way reversing valve and a pilot valve used in systems such as air conditioners, compressors, refrigerators, and water heaters. Background technique

[0002] The four-way reversing valve is mainly used in heat pump air conditioners, water heaters and other systems to realize the switching of refrigerant flow channels in the system, and then realize the functions of cooling, heating and defrosting of the whole system.

[0003] The pilot valve part is one of the important components of the four-way reversing valve. It is used for the reversing of the main valve body and builds the necessary foundation for the normal work of other parts to realize the basic functions of the four-way reversing valve.

[0004] like figure 1 As shown, when the coil of the pilot valve of the four-way reversing valve is not energized, its core iron is dise...

Examples

Embodiment Construction

[0034] The core of the present invention is to improve the pilot valve or the main valve body of the four-way reversing valve so that the high-pressure pipeline can be connected with the low-pressure pipeline, so as to quickly realize the pressure equalization between the high-pressure side and the low-pressure side of the system, and make the system in a pressure equalization state. state, so as to achieve the purpose of defrosting without switching the working state of the system and without affecting the use.

[0035] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Please refer to figure 2 , figure 2 It is a structural schematic diagram of a specific embodiment of the pilot valve of the four-way reversing valve provided by the present invention.

[0037] In a specific embo...