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Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation

A technology of supplementing air to increase enthalpy and compression cycle, which is applied in the direction of irreversible cycle compressors, compressors, refrigerators, etc., can solve the problems of limiting the performance of oil cooling and compression cycle, so as to improve equal volume efficiency, improve performance, and simplify oil The effect of the cooling system

Inactive Publication Date: 2015-11-11
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of fuel injected and the temperature of fuel injected are the key factors affecting the performance of the system, which limits the performance of the oil-cooled compression cycle

Method used

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  • Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation
  • Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation
  • Refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the exhaust port of compressor 1 is connected to port A of oil separator 2, port B of oil separator 2 is connected to one end of the first heat exchanger 3, and the other end of the first heat exchanger 3 is connected to the first throttling device One end of 4 is connected, the other end of the first throttling device 4 is connected with port A of the flasher 5, port C of the flasher 5 is connected with the air supply port of compressor 1, and port B of the flasher 5 is connected with the second section One end of the flow device 6 is connected, the other end of the second throttling device 6 is connected with one end of the second heat exchanger 7, and the other end of the second heat exchanger 7 is connected with the suction port of the compressor 1 to form a supplementary air enthalpy increase Circulation; the exhaust port of compressor 1 is connected to port A of oil separator 2, port C of oil separator 2 is connected to one end of oil co...

Embodiment 2

[0026] Such as figure 2 As shown, the exhaust port of compressor 1 is connected to port A of oil separator 2, port B of oil separator 2 is connected to one end of the first heat exchanger 3, and the other end of the first heat exchanger 3 is connected to the first throttling device One end of 4 is connected, the other end of the first throttling device 4 is connected with port A of the flasher 5, port C of the flasher 5 is connected with the air supply port of compressor 1, and port B of the flasher 5 is connected with the second section One end of the flow device 6 is connected, the other end of the second throttling device 6 is connected with one end of the second heat exchanger 7, and the other end of the second heat exchanger 7 is connected with the suction port of the compressor 1 to form a supplementary air enthalpy increase Circulation; the exhaust port of compressor 1 is connected to port A of oil separator 2, port C of oil separator 2 is connected to one end of oil c...

Embodiment 3

[0030] Such as image 3 As shown, the exhaust port of compressor 1 is connected to port A of oil separator 2, port B of oil separator 2 is connected to one end of the first heat exchanger 3, and the other end of the first heat exchanger 3 is connected to the first throttling device 4, the other end of the first throttling device 4 is connected to the port A of the flasher 5, the port C of the flasher 5 is connected to the gas supply port of the compressor 1, and the port B of the flasher 5 is connected to the third The port A of the heat exchanger 11 is connected, the port B of the third heat exchanger 11 is connected with one end of the second throttling device 6, the other end of the second throttling device 6 is connected with one end of the second heat exchanger 7, and the second heat exchanger The other end of the device 7 is connected to the port C of the third heat exchanger 11, and the port D of the third heat exchanger 11 is connected to the suction pipe of the compre...

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Abstract

The invention provides a refrigerating system with oil cooling compression circulation and air supplementing enthalpy increasing circulation. The refrigerating system comprises a compressor, an oil separator, a first heat exchanger, a second heat exchanger, a flash vaporization device, a first throttling device, a second throttling device, a third throttling device and an oil cooling pipe which are connected through a pipeline. Air supplementing enthalpy increasing circulation is formed by the compressor, the oil separator, the first heat exchanger, the first throttling device, the flash vaporization device, the second throttling device and the second heat exchanger. Oil cooling compression circulation is formed by the compressor, the oil separator, the oil cooling pipe and the third throttling device. Heat exchanging is conducted between the oil cooling pipe and the flash vaporization device. Oil in a mixture (oil and refrigerant) at an exhaust port of the compressor ranges from 0 percent to 50 percent, and the mass percent of the oil can be adjusted. The oil spraying amount can be increased, compression heat can be effectively absorbed through the oil cooling compression process, the exhaust temperature of the compressor is reduced, and the isentropic efficiency and the isovolumetric efficiency of the compressor are improved. By means of combination with air supplementing enthalpy increasing circulation, refrigerant flash vaporization of the flash vaporization device is used for cooling oil, an oil cooling system is simplified, and the performance of oil cooling compression circulation is improved.

Description

technical field [0001] The invention relates to the field of refrigeration, in particular to a refrigeration system with an oil cooling compression cycle and an air supplementary enthalpy increasing cycle. Background technique [0002] At present, refrigeration equipment works under the condition of large temperature difference, and there are phenomena such as low efficiency and high exhaust temperature. The general solution is to use air supplementation to increase enthalpy cycle, through intermediate air supplementation to improve system efficiency and reduce exhaust temperature. But when the temperature difference is large to a certain extent, the supplementary air enthalpy increase cycle not only cannot solve the problem of excessive exhaust temperature, but also causes the system to shut down, and also has the problem of very low system performance. Another method is to inject oil into the cylinder of the compressor, and inject a certain amount of oil to absorb a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B31/00F25B41/06F25B41/31F25B41/37
CPCF25B1/00F25B1/047F25B31/00F25B41/37F25B41/31
Inventor 罗宝军
Owner HUNAN UNIV
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