Triaxial pressure high-efficient air cooled heat pump unit applicable to large temperature difference

An air-cooled heat pump, large temperature difference technology, applied in refrigerators, compressors, refrigeration components, etc., can solve the problems of high exhaust temperature, large compressor compression ratio, cooling capacity/heating capacity and energy efficiency ratio. Widening application fields, improving reliability, and ingenious effects of unit design optimization

Active Publication Date: 2017-08-08
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a three-pressure high-efficiency air-cooled heat pump unit suitable for large temperature differences, so as to solve the problem of excessive compressor compression ratio and exhaust temperature when existing air source heat pumps are used for cooling in high-temperature conditions and heating in low-temperature conditions. Prominent technical problems such as excessively high, system cooling / heating capacity and energy efficiency ratio drop sharply

Method used

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  • Triaxial pressure high-efficient air cooled heat pump unit applicable to large temperature difference
  • Triaxial pressure high-efficient air cooled heat pump unit applicable to large temperature difference
  • Triaxial pressure high-efficient air cooled heat pump unit applicable to large temperature difference

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Embodiment 1

[0023] Such as figure 1 As shown, the present invention provides a three-pressure high-efficiency air-cooled heat pump unit suitable for large temperature differences. Heat exchanger 4-1, outdoor fan 4-2, first check valve 5-1, second check valve 5-2, third check valve 5-3, fourth check valve 5-4, Fifth one-way valve 5-5, sixth one-way valve 5-6, recooler 6, dry filter 7, observation mirror 8, first expansion valve 9, medium pressure gas-liquid separator 10, second expansion valve 11 , Indoor side heat exchanger 12, low-pressure gas-liquid separator 13, evaporation pressure regulator 14, auxiliary circuit compressor 15, auxiliary circuit oil separator 16 and connecting pipelines. The exhaust port of the main road compressor 1 is connected to the inlet of the fifth one-way valve 5-5 through the main road oil separator 2, and the outlet of the fifth one-way valve 5-5 is connected to the sixth one-way valve 5. The outlet of -6 is connected, and the gas outlet after the two are ...

Embodiment 2

[0026]The main circuit compressor 1 of the present invention is a fixed-frequency scroll compressor, and the auxiliary circuit compressor 15 is a fixed-frequency rolling rotor compressor; the indoor heat exchanger 12 is an air-cooled heat exchanger; The outdoor side heat exchanger 4-1 is a finned tube heat exchanger; the outdoor side fan 4-2 is a frequency conversion fan; the first expansion valve 9 is a manual expansion valve, and the second expansion valve 11 It is a blocking expansion valve; the evaporating pressure regulator 14 is a proportional regulator controlled by the pre-valve pressure (ie evaporating pressure); the subcooler 6 is a plate heat exchanger. Other structures are the same as in Embodiment 1.

Embodiment 3

[0028] The main circuit compressor 1 described in the present invention is a fixed-frequency rolling rotor compressor, and the auxiliary circuit compressor 15 is a fixed-frequency scroll compressor; the indoor side heat exchanger 12 is an air-cooled heat exchanger; The outdoor side heat exchanger 4-1 is a laminated heat exchanger; the outdoor side fan 4-2 is a frequency conversion fan; the first expansion valve 9 is a float type expansion valve, and the second expansion valve 11 It is a blocking expansion valve; the evaporating pressure regulator 14 is a proportional-integral regulator controlled by the pre-valve pressure (ie evaporating pressure); the subcooler 6 is a casing heat exchanger. Other structures are the same as in Embodiment 1.

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Abstract

The invention relates to the technical field of air conditioner heat pumps, in particular to a triaxial pressure high-efficient air cooled heat pump unit applicable to large temperature difference. The triaxial pressure high-efficient air cooled heat pump unit comprises a main path compressor, a main path oil separator, a four-way reversing valve, an outdoor heat exchanger, an outdoor draught fan, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a fifth one-way valve, a sixth one-way valve, a subcooler, a drying filter, an observation mirror, a first expansion valve, a medium-pressure gas-liquid separator, a second expansion valve, an indoor heat exchanger, a low-pressure gas-liquid separator, an evaporation pressure adjustor, an auxiliary path compressor, an auxiliary path oil separator and a connecting pipe. The triaxial pressure high-efficient air cooled heat pump unit solves the prominent problems about the high-temperature refrigeration working mode at summer and the low-temperature heating working mode at winter, has the characteristics of being wider in energy adjusting range and rapid and energy-saving in defrosting, and widens the application field of the air cooled heat pump.

Description

technical field [0001] The invention relates to the technical field of air-conditioning heat pumps, in particular to a three-pressure high-efficiency air-cooled heat pump unit suitable for large temperature differences. Background technique [0002] Facing the increasingly prominent problems of energy shortage and environmental pollution, the development of high-efficiency, energy-saving, comfortable, safe and reliable air-conditioning heat pump devices has become the key to the sustainable and rapid development of the air-conditioning industry. The conventional air source heat pump device uses air as the cooling and heating source. It has a simple structure, is easy to install and use, and can make full use of the energy in the air. It is an efficient and energy-saving air-conditioning equipment. However, when the outdoor temperature is too high in summer, the condensing pressure of the air source heat pump device is too high, the compression ratio of the compressor is too ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B29/00F25B31/00F25B41/04F25B41/06F25B47/02F25B41/20F25B41/31
CPCF25B29/003F25B31/00F25B47/022F25B47/025F25B2309/004F25B2347/02F25B2400/054F25B2500/31F25B2500/29F25B41/30F25B41/20F25B41/31
Inventor 崔四齐桑翎白静孙永春刘寅于海龙张莹付梦菲
Owner ZHONGYUAN ENGINEERING COLLEGE
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