Device for automatically adjusting flux of refrigeration working medium

A technology of refrigeration working fluid and automatic adjustment, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of complicated equipment and manufacturing, and cannot provide general expansion technology for mixed working fluids, so as to improve the coefficient of performance and load, Facilitate development and application, and improve the effect of COP

Inactive Publication Date: 2011-04-27
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although electronic expansion valves can provide an expansion process for non-azeotropic working fluids in principle, the equipment and manufacture are very complicated. This technology is still in the research and development stage, and it cannot provide a general expansion technology suitable for various mixed working fluids.

Method used

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  • Device for automatically adjusting flux of refrigeration working medium
  • Device for automatically adjusting flux of refrigeration working medium
  • Device for automatically adjusting flux of refrigeration working medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, when the device of the present invention is used for a unit with switchable cooling and heating modes, when the unit is in the cooling mode, the external unit 24 is a condenser, and the internal unit 25 is an evaporator, and the high-temperature and high-pressure refrigeration unit coming out of the compressor 21 The substance enters the four-way valve 23, enters from terminal d, flows out from terminal a, enters the external machine 24, and is condensed into a liquid state. Under the guidance of the one-way valve 29, the liquid working medium enters the float expansion valve 26 through the dry filter 27 and the solenoid valve 28, and the ball valve 213 can be opened as required to store the liquid working medium in the liquid reservoir 214; Next, the liquid working medium flowing from the external machine 24 will be directly injected into the working chamber of the float expansion valve 26. Due to the special design of the valve, the valve bo...

Embodiment 2

[0029] like figure 1 As shown, when the device of the present invention is used in a unit with switchable refrigeration and heating modes, when the unit is in the heating mode, the external unit 24 is an evaporator, the internal unit 25 is a condenser, and the high-temperature and high-pressure refrigeration from the compressor 21 The working fluid enters the four-way valve 23, enters from terminal d, flows out from terminal c, enters the internal unit 25, and is condensed into a liquid state. Under the guidance of the one-way valve 211, the liquid working medium enters the float expansion valve 26 through the dry filter 27 and the solenoid valve 28, and the ball valve 213 can be opened as required to store the liquid working medium in the liquid reservoir 214; Next, the liquid working medium flowing from the internal unit 25 will be directly injected into the working chamber of the float expansion valve 26. Due to the special design of the valve, the valve body is only affect...

Embodiment 3

[0032] like figure 2 As shown, when the device of the present invention is used in a single-function refrigeration unit, the external machine 24 is a condenser, and the internal machine 25 is an evaporator, and the high-temperature and high-pressure refrigerant coming out of the compressor 21 enters the external machine 24 and is condensed into a liquid working medium . The liquid working medium enters the float expansion valve 26 through the dry filter 27 and the electromagnetic valve 28, and the ball valve 213 can be opened as required to store the liquid working medium in the liquid reservoir 214; The liquid working medium will be directly injected into the working chamber of the float expansion valve 26. Due to the special design of the valve, the valve body is only affected by the buoyancy of the float ball and is not affected by the pressure difference force of the expansion valve. The movement of the valve body is smooth and free. The working medium can be expanded ac...

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PUM

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Abstract

The invention discloses a device for automatically adjusting the flux of a refrigeration working medium, which is characterized by comprising a compressor, a condenser, a dry filter, an electromagnetic valve, a floating ball expansion valve, a ball valve, a reservoir, an evaporator and a gas-liquid separator, wherein the outlet of the compressor is connected with the inlet of the condenser; the outlet of the condenser is connected with the inlet of the floating ball expansion valve through the dry filter and the electromagnetic valve; the outlet of the floating ball expansion valve is connected with the inlet of the evaporator; the outlet of the evaporator is connected with the inlet of the gas-liquid separator; the outlet of the gas-liquid separator is connected with the inlet of the compressor; a top air outlet of the floating ball expansion valve is connected with the inlet of the dry filter; and the bottom of the floating ball expansion valve is connected with the reservoir through the ball valve. Due to the improvement on the heat transfer property of the condenser and the evaporator, the refrigeration and heating load of a system can be improved, and the coefficient of performance of the system can be improved by over 15 percent.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and in particular relates to a device for automatically adjusting the flow rate of refrigeration working fluid. Background technique [0002] Refrigeration cycles are widely used in refrigeration, air conditioning, and heat pump systems to cool and heat objects or spaces. The most critical technology in the refrigeration system is the control of the refrigerant flow. At present, there is no mature control technology possible, and the widely used devices based on capillary tubes, thermal expansion valves, and electronic expansion valves are mainly used as automatic control devices for refrigerant flow. These control devices have serious limitations, which limit the development of refrigeration technology. Although the capillary is cheap, it is a constant flow control device. When the operating parameters change, the operating efficiency of the system is greatly reduced, and even cannot be o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B41/06F25B41/04
Inventor 陈九法安二铭乔卫来朱晟徐相梅陈军伟高龙庞丽颖
Owner SOUTHEAST UNIV
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