Energy accumulating type efficient air-cooled heat pump unit

An air-cooled heat pump and energy storage technology, which is applied in the field of air-conditioning heat pumps, can solve the problems of high compression ratio of compressors, high exhaust temperature, system cooling capacity/heating capacity and energy efficiency ratio decline, so as to improve reliability and reduce Ingenious effect of operating cost and unit design optimization

Inactive Publication Date: 2019-09-17
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes an energy-storage type high-efficiency air-cooled heat pump unit to solve the problem of excessive compressor compression ratio, high exhaust temperature, and system cooling capacity / Prominent technical problems such as sharp drop in heating capacity and energy efficiency ratio

Method used

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  • Energy accumulating type efficient air-cooled heat pump unit
  • Energy accumulating type efficient air-cooled heat pump unit
  • Energy accumulating type efficient air-cooled heat pump unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1As shown, the present invention provides an energy storage type high-efficiency air-cooled heat pump unit, including a refrigeration compressor 1, a four-way reversing valve 2, an outdoor side heat exchanger 3, an outdoor side fan 4, a cold storage device 5, and a phase change cold storage medium 6. Evaporation coil for cold storage 7, recooling coil for cold storage 8, heat accumulator 9, phase change heat storage medium 10, evaporation coil for heat storage 11, recooling coil for heat storage 12, indoor heat exchange device 13, indoor side fan 14, gas-liquid separator 15, evaporation pressure regulating valve 16, expansion valve for energy storage 17, dry filter 18, observation mirror 19, main road expansion valve 20, first solenoid valve 21, second Solenoid valve 22, the 3rd solenoid valve 23, the 4th solenoid valve 24, the 5th solenoid valve 25, the first check valve 26, the second check valve 27, the 3rd check valve 28, the 4th check valve 29 and C...

Embodiment 2

[0039] The refrigeration compressor 1 described in this embodiment is a fixed-frequency refrigeration compressor, the outdoor heat exchanger 3 and the indoor heat exchanger 13 are finned tube heat exchangers, the outdoor fan 4 and the indoor fan 14 are variable frequency fans, The evaporating pressure regulating valve 16 is a proportional regulating valve controlled by the pre-valve pressure, which is a direct-acting evaporating pressure regulating valve, the expansion valve 17 for energy storage and the main expansion valve 20 are manual expansion valves, and the phase change cold storage medium 6 And the phase change thermal storage medium 10 is a solid-liquid phase change material and a liquid-gas phase change material. Other structures are the same as in Embodiment 1.

Embodiment 3

[0041] The refrigeration compressor 1 described in this embodiment is a variable speed refrigeration compressor, the outdoor heat exchanger 3 and the indoor heat exchanger 13 are stacked heat exchangers, the outdoor fan 4 and the indoor fan 14 are adjustable fans, The evaporating pressure regulating valve 16 is a proportional regulating valve controlled by the pre-valve pressure. It is a relay type evaporating pressure regulating valve, and the expansion valve 17 for energy storage and the main expansion valve 20 are choke expansion valves and phase change cold storage. The medium 6 and the phase change thermal storage medium 10 are solid-solid phase change materials and solid-gas phase change materials. Other structures are the same as in Embodiment 1.

[0042] Example 3

[0043] The refrigeration compressor 1 described in this embodiment is a two-stage refrigeration compressor, the outdoor side heat exchanger 3, the indoor side heat exchanger 13 are parallel flow heat excha...

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Abstract

The invention relates to the technical field of air conditioner heat pumps, in particular to an energy accumulating type efficient air-cooled heat pump unit. The energy accumulating type efficient air-cooled heat pump unit comprises a refrigerating compressor, a four-way reversing valve, an outdoor side heat exchanger, an outdoor side fan, a cold accumulator, a phase change cold accumulating medium, an evaporating coiled pipe for cold accumulation, a re-cooling coiled pipe for cold accumulation, a heat accumulator, a phase change heat accumulating medium, an evaporating coiled pipe for heat accumulation, a re-cooling coiled pipe for heat accumulation, an indoor side heat exchanger, an indoor side fan, a gas-liquid separator, an evaporating pressure regulating valve, an energy accumulation type expansion valve, a drying filter, an observing mirror, a main path expansion valve, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, a first check valve, a second check valve, a third check valve, a fourth check valve and a connecting pipeline. Through the assisting regulation of the cold accumulator and the heat accumulator and the skillful switching combination of one four-way reversing valve and four check valves, the problems of heat supply and refrigeration under extreme working conditions are solved, and the use temperature range of an air source heat pump is increased.

Description

technical field [0001] The invention relates to the technical field of air-conditioning heat pumps, in particular to an energy storage type high-efficiency air-cooled heat pump unit. Background technique [0002] In recent years, due to frequent large-scale and continuous smog in many parts of the country, major cities and local governments including Beijing, Hebei, and Henan have introduced relevant policies to speed up the elimination of scattered small coal-fired boilers, and make steady progress according to local conditions. Coal-to-electricity replacement transformation to promote energy conservation and emission reduction. At present, the air source heat pump technology is considered as the standard configuration of the country's "coal-to-electricity" transformation, but the existing air source heat pumps have the following prominent problems: under low temperature environment conditions, due to the excessive compression ratio of the compressor, the system produces hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B30/02F25D3/00F25B43/00F25B41/06F25B41/04F25B47/02F25B41/20F25B41/31
CPCF25B13/00F25B30/02F25D3/00F25B43/00F25B47/02F25B41/31F25B41/20
Inventor 崔四齐刘寅张超桑翎刘斌付晶萍王辉张淑林王佳男
Owner ZHONGYUAN ENGINEERING COLLEGE
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