Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device

A refrigeration cycle, carbon dioxide technology, applied in refrigerators, refrigeration and liquefaction, gas cycle refrigerators, etc., can solve the problems affecting the recovery efficiency of expansion work, increase leakage, increase gap, etc., and achieve small deformation and leakage. Reduced and improved mechanical efficiency

Inactive Publication Date: 2004-12-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the rotor expander, the sliding plate of the rolling piston is easily deformed under high pressure, resulting in an increase in the gap and increased leakage, and the friction of the sliding plate in the chute is very large, which will affect the recovery efficiency of expansion work

Method used

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  • Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device
  • Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device
  • Carbon dioxide transcrisis refrigeration circulation swing rotor type expansion energy saving device

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Embodiment Construction

[0008] The present invention is in the layout of the system as attached image 3 The dotted box part in .

[0009] During installation, the expansion cylinder intake pipe 11 of the present invention is connected with the outlet of the gas cooler 27, the expansion cylinder exhaust port 18 is connected with the entrance of the evaporator 26, and the entrance of the compression cylinder is a gas-liquid separator, which is separated from the evaporation The gas from the compressor, the gas from the outlet of the compressed cylinder is mixed with the exhaust gas from the main compressor, and enters the gas cooler.

[0010] When working, the supercritical high-pressure carbon dioxide fluid (usually with a pressure of about 10Mpa) enters the expansion high-pressure chamber 22 from the expansion cylinder intake pipe 11. At this time, the solenoid valve 13 is in an open state, and the high-pressure fluid enters the cylinder to push the expansion swing rotor 5 to rotate. And drive the ...

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PUM

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Abstract

The carbon dioxide transcritical refrigeration circular swinging rotor type expansion energy-saving device is formed from cylinder body, swinging rotor, camshaft, base seat and electromagnetic valve. It is mainly characterized by that the piston of cylinder is designed into swinging rotor, one swinging rotor is placed between the main bearing and intermediate partition board, another swinging rotor is placed between the partion board and secondary bearing. The rolling ring is cover-mounted on the eccentric wheel of main shaft, the swing bar can be freely up-down slided in the cylindrical guideway, and can be leftward and right ward swinged. The swing bar of piston and rolling ring are combined into one body, so that they have no need of sealing and lubricating, and can reduce leakage and eliminate friction loss, so that it can obtain the effect of saving energy and protecting environment.

Description

technical field [0001] The invention belongs to an energy-saving device in refrigeration, air-conditioning and heating mechanical equipment. Background technique [0002] Although the research on the development of CO2 expanders has gained consensus, studies have shown that the COP (coefficient of performance) of the CO2 system is sensitive to the efficiency of the CO2 expander, and only CO 2 Only when the system obtains more than 60% of the ideal expansion work can it exceed the energy efficiency ratio of the traditional working fluid system. The key issue is how to improve the efficiency of the expander and obtain higher recovery work. Different forms of expanders have different mechanical efficiencies, due to the CO 2 The pressure in the expansion process of the system is high, and the pressure difference before and after expansion is large. Therefore, controlling leakage and reducing friction is the fundamental way to improve the mechani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B9/00
CPCF25B9/008F25B2309/061
Inventor 马一太杨昭李敏霞张云宪涂铭海李丽新
Owner TIANJIN UNIV
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