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

Abstract

The carbon dioxide transcritical refrigeration circualting rotor type expansion energy-saving device is formed from cylinder body, rolling piston, eccentric wheel shaft, base seat and electromagnetic valve. The internal cavity of expansion energy-saving device can be divided into two high-pressure cavities and two low-pressure cavities by means of main and secondary bearings and partion board. After the carbon dioxide is come into the expasion cylinder, it can driven eccentric wheel shaft to make it rotate and make expansion cylinder produce volume change to lower liquid pressure and output mechanical power. According to the rotating angle of eccentric wheel shaft its circuit control system can output signal to control opening and closing of the electromagentic valve to control suction time of the expansion energy-saving device to make it circularly apply work.

Description

technical field [0001] The invention belongs to an energy-saving device in refrigeration air-conditioning or heating mechanical equipment. Background technique [0002] At present, the refrigerants commonly used in the refrigeration and air-conditioning industry are CFCs (chlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons). Because of their damaging effects on the ozone layer and their greenhouse effect, scientists around the world are intensely researching alternatives. Among them, carbon dioxide has been reintroduced into the refrigeration heat pump industry due to its excellent environmental protection characteristics, good heat transfer and flow properties. Professor Gustav Lorentzen, the former chairman of the International Society of Refrigeration, first proposed the use of transcritical cycles in the early 1990s, using CO 2 Refrigerant is the fundamental method to solve CFC replacement. However, to achieve CO in industrial tec...

AI Technical Summary

Problems solved by technology

Generally, the method of recovering work, such as mechanical work to drive the generator to generate electricity, is difficult to use due to the unstable output voltage, and the energy conversion will cause energy loss, resulting in a decrease in efficiency

It is difficult to guarantee the life of the generator in a closed system

Since the speed of the expander is different from that of the main compressor, and its speed changes continuously with the operating state, it is difficult to realize the coaxiality of the expander and the main compressor, and it is not conducive to the adjustment of variable working conditions

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