Critical-cross carbon dioxide refrigerating system restriction sleeve

A short-throttle tube and carbon dioxide technology, which is applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of high manufacturing cost, low reliability, and large structure, and achieve low cost, overall cost reduction, and size compact effect

Inactive Publication Date: 2006-02-22
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

"Its shortcomings are: because the throttling mechanism is actually composed of three valve parts, the structure is complex; especially the high-pressure control valve has a huge structure, relatively high manufacturing costs, and low reliability, and is only suitable for Carbon dioxide refrigeration system with fixed displacement compressor

Method used

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  • Critical-cross carbon dioxide refrigerating system restriction sleeve

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Embodiment Construction

[0014] Such as figure 1 As shown, the present invention includes: valve body 1, high-pressure gas inlet 2, inlet filter screen 3, high-pressure chamber 4, cylinder 5, piston top dead center 6, piston 7, sealing ring 8, adjusting bolt 9, spring 10, main section Flow short pipe 11, auxiliary throttle short pipe 12, low-pressure chamber 13, outlet filter screen 14, low-pressure liquid outlet 15, one end of high-pressure chamber 4 is connected with high-pressure gas inlet 2, and an inlet filter screen is arranged behind the high-pressure gas inlet 2 3. The cylinder 5 is connected to the other end of the high-pressure chamber 4, and the cylinder 5 is provided with a piston 7, a spring 10, an adjusting bolt 9 and a sealing ring 8 in sequence, and the top dead center of the piston 6 is set on the top of the cylinder 5. The parallel main throttle short tube 11 and auxiliary throttle short tube 12 are vertically arranged in the valve body 1, the inlet of the main throttle short tube 11...

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Abstract

This invention relates to a critical carbon dioxide refrigerating system restriction sleeve, which belongs to cryogenic technology field. The invention comprises valve body, high-voltage air intake, intake filter, high-voltage cavity, cylinder, piston top center, piston, sealing ring, adjusting bolt, spring, main restriction sleeve, auxiliary restriction sleeve, low-voltage cavity, outlet filter and low-voltage liquor outlet, wherein one end of the high-voltage cavity is connected with the high-voltage air intake, and behind the high-voltage inlet it sets the intake filter, the cylinder is connected with the other end of the high-voltage cavity; in the cylinder it sets piston, spring, adjusting bolt and sealing ring sequentially, and the piston top center is set in the top of the cylinder; the parallel main restriction sleeve and auxiliary restriction sleeve are set in the valve body vertically, and the intake of the main restriction sleeve is connected directly with the high-voltage cavity. The invention applies the restriction sleeve as the restrictive element, by which the flow can be adjusted automatically according to the intake high-voltage changing of the restriction sleeve.

Description

technical field [0001] The invention relates to a component in the technical field of refrigeration, in particular to a short throttle tube of a transcritical carbon dioxide refrigeration system. Background technique [0002] At present, the scope of research on carbon dioxide as an alternative refrigerant involves almost all fields of refrigeration and air conditioning. As the automotive air conditioner itself has the characteristics of severe turbulence, harsh operating conditions, and serious refrigerant leakage, it has become the first choice for the application of carbon dioxide as an alternative refrigerant. As mentioned by Lorentzen and Pettersen, a typical transcritical CO2 automotive air-conditioning system is mainly composed of a compressor, an air cooler, a throttling element, an evaporator, a low-pressure liquid receiver, and an intermediate heat exchanger. At the same time, there is an optimal pressure in the transcritical carbon dioxide refrigeration cycle, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06F25B9/00
CPCF25B2400/0411F25B41/06F25B2341/0661F25B2309/061F25B41/385
Inventor 金纪峰陈江平陈芝久
Owner SHANGHAI JIAO TONG UNIV
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