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Second throttle bidirectional heat expansion valve with filter structure

A technology of thermal expansion valve and secondary throttling, which is applied in the direction of filtration and separation, the device for absorbing fluid energy of the valve, and the lifting valve, etc. It can solve the problems of the energy efficiency ratio of the refrigeration system falling, stuck or blocked, and the refrigeration system cannot work normally, etc. , to achieve the effect of ensuring normal operation and overcoming fluctuations or oscillations

Inactive Publication Date: 2008-03-05
ZHEJIANG CHUNHUI INTELLIGENT CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the flow rate required by the cooling condition is different from that of the heating condition, and the throttle passage section of the valve port at the bellows sensing temperature does not match the required cross section of the valve port passage, when the residual impurities in the refrigeration system enter the thermal When the adjustment mechanism of the expansion valve is damaged, it may cause jamming or blockage, resulting in a decrease in the energy efficiency ratio of the refrigeration system, and the refrigeration system cannot work normally.

Method used

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  • Second throttle bidirectional heat expansion valve with filter structure
  • Second throttle bidirectional heat expansion valve with filter structure
  • Second throttle bidirectional heat expansion valve with filter structure

Examples

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Embodiment Construction

[0025] The first embodiment of the secondary throttling two-way thermal expansion valve with filter structure of the present invention is shown in Figure 1:

[0026] The throttle hole 8 is directly processed by the valve body 1, the passage section of the throttle hole 8 is smaller than the maximum cross section of the throttle passage 6 of the valve port, and the filter screen 2 is respectively placed at both ends of the valve body 1 and the left liquid connecting pipe 9 and the right liquid Between the connecting pipes 10. Its working process is shown in Figure 5 and Figure 1:

[0027] If the refrigeration system of the heat pump type air-conditioning device is in the cooling condition, the gaseous refrigerant is compressed by the compressor 41 to become a high-pressure and high-temperature gaseous refrigerant, and enters the outdoor heat exchanger 43 through the four-way electromagnetic reversing valve 42 to condense to become a high-pressure liquid refrigerant. The high-p...

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Abstract

This invention is a secondary throttle double direction thermostatic expansion valve with filtering structure. It includes valve body, steel ball, valve port throttling channel, valve port throttling fore-channel, valve port throttling back-channel, left liquid connecting pipe, right liquid connecting pipe and throttling hole. The cross section of throttling hole channel is smaller than the maximum cross section of valve port throttling channel. There are filtering net between both sides of valve body and left and right liquid connecting pipes. Liquid refrigerant undertakes double throttling. The cross section of valve port throttling channel is automatically adjusted. It can meet different flow requirement of refrigerating and heating work.

Description

technical field [0001] The invention relates to a secondary throttling bidirectional thermal expansion valve with a filtering structure, which belongs to the throttling technical field of a vapor compression heat pump refrigeration system, and is particularly suitable for the refrigeration system of a heat pump air conditioning device as a throttling element. Background technique [0002] The two-way thermal expansion valve currently used for throttling in the refrigeration system of heat pump air-conditioning devices only uses the bellows to sense the temperature and automatically adjusts the throttling channel section of the valve port for one throttling. The channel section before and after throttling is larger than that of the valve The maximum cross-section of the throttle passage, the left and right liquid connecting pipes and the valve body have no filtering structure. When the flow rate required by the cooling condition is different from that of the heating condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/14F16K47/00F25B41/06B01D35/00
CPCF25B2341/0683
Inventor 邓永林
Owner ZHEJIANG CHUNHUI INTELLIGENT CONTROL