Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same

A heat pump system, low-temperature air-conditioning technology, applied in the direction of machines/engines, lighting and heating equipment, irreversible cycle compressors, etc., can solve the problem of heating capacity attenuation, energy saving, environmental protection, and safety that cannot meet the requirements of social development and cannot be started normally Operation and other issues to achieve the effect of improving heating capacity and energy efficiency ratio

Active Publication Date: 2006-07-12
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the ordinary air source heat pump air conditioners sold in the market have serious attenuation of heating capacity under the low temperature outdoor conditions, and even cannot start and run normally. In the cold regions of northern my country, they can only be used i

Method used

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  • Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same
  • Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same

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Embodiment Construction

[0015] see figure 1 As shown, a low-temperature air-conditioning heat pump system 1 includes a liquid accumulator 12, a gas-liquid separator 15, a secondary cooling coil 19, a four-way valve 16, an outdoor unit heat exchanger 17, an outdoor unit electronic expansion valve 18 and a compressor Air supply system. The air supply system for the compressor includes an EVI solenoid valve 14, an EVI electronic expansion valve 13, a compressor 9 provided with an air supply port, and a liquid storage device 12. Machine 11 is connected with EVI electromagnetic valve 14.

[0016] In order to better implement the present invention, the air supply system of the compressor may also include two temperature sensing packages 20 and 21 . In this embodiment, the temperature sensing package is a thermistor, and the compressor is an air-jet digital scroll compressor. The liquid reservoir 12 is connected with the EVI solenoid valve 14 and the EVI electronic expansion valve 13 by metal pipes, the ...

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PUM

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Abstract

The invention relates to a low-temperature air-condition heat pump and the method for reducing temperature adjusting vibration which has better warming effect in outdoor low temperature. The invention comprises a liquid storage device, a gas-liquid separator, an auxiliary cooling coil, a cross valve, an outdoor heat exchanger, an outdoor electric expansion valve and a compressor air-feeding system. The invention uses an ejection digital whorl compressor and a compressor air-feeding system, while the outdoor temperature is lower than 0Deg. C, the compressor air-feeding system will work, the EV electromagnetic valve is switched on to feed saturate refrigeration agent in middle pressure to the compressor to realize two-step compression inside the compressor and improve the heating amount and energy-efficiency rate.

Description

【Technical field】 [0001] The invention relates to the field of air source heat pump air conditioners, in particular to a low temperature air conditioner heat pump system with good heating effect under outdoor low temperature conditions and a method for reducing temperature adjustment fluctuations. 【Background technique】 [0002] At present, the ordinary air source heat pump air conditioners sold in the market have serious attenuation of heating capacity under the low temperature outdoor conditions, and even cannot start and run normally. In the cold regions of northern my country, they can only be used in the transition season, and cannot Meet basic heating needs. The traditional central heating methods in northern my country mainly use coal and gas, but these heating methods cannot meet the requirements of social development in terms of energy saving, environmental protection, and safety. Therefore, it is necessary to develop an ultra-low temperature heat pump air-condition...

Claims

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Application Information

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IPC IPC(8): F25B13/00F04C28/24
CPCF25B2700/2101F25B2400/23F25B2400/13F25B13/00F25B2600/2509F25B2700/21F25B2313/02741F25B1/10
Inventor 苏玉海刘桂平孙常权
Owner GREE ELECTRIC APPLIANCES INC
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