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Super low temperature heat pump air conditioner system

An air-conditioning system and heating technology, applied in the field of ultra-low temperature heat pump air-conditioning systems, can solve the problems of energy saving, environmental protection and safety failing to meet the requirements of social development, ordinary air source heat pump air conditioners unable to meet the heating demand, unable to start and operate normally, etc. Stable and reliable operation of the air conditioner, overcoming the effects of severe heating attenuation, low compression ratio and exhaust temperature

Active Publication Date: 2008-04-23
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, under the condition of outdoor low temperature, the heating capacity attenuation is very serious, and even cannot start and run normally; Once in use, the ordinary air source heat pump air conditioner can hardly meet the basic heating demand in the cold winter season
As we all know, the traditional central heating methods in northern my country are mainly coal-fired and gas-fired, but this heating method cannot meet the requirements of social development in terms of energy saving, environmental protection or safety.

Method used

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  • Super low temperature heat pump air conditioner system
  • Super low temperature heat pump air conditioner system
  • Super low temperature heat pump air conditioner system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 , 4 , as shown in 5, where figure 1 The part inside the dotted line box in the figure indicates the ultra-low temperature heat pump system, and the solid line with arrows in the figure indicates the flow direction of the refrigerant when the heat pump system is heating. An ultra-low temperature heat pump air-conditioning system, including an air-injection enthalpy-increasing scroll compressor 11, a flash evaporator assembly, a main throttling component, a gas-liquid separator 15, a four-way valve 16, an outdoor heat exchanger 17, and an indoor heat exchanger 19; The components are connected together through copper pipes to form a complete set of ultra-low temperature heat pump air conditioning system. Wherein, the compressor 11 has two suction ports, a first suction port 111 and a second suction port 112 .

[0018] The flasher assembly includes a flasher 12 , four throttling devices 13 , two one-way valves 14 and two solenoid valves 18 . Described f...

Embodiment 2

[0026] Such as image 3 As shown, it is a schematic diagram of the principle of this embodiment; it can be seen from the figure that the difference between this embodiment and the first embodiment is that in this embodiment, three sets of parallel flash evaporator assemblies replace the original set of flash evaporator assemblies , and a solenoid valve is connected in series before the air inlet 121 of the flash evaporator in the second and third groups of flash evaporator assemblies. The solenoid valve at point A can also be placed at point B; the one-way valve at point a can be placed at point b and point c.

[0027] The principle of low-temperature heat pump with multiple flash evaporators: During the heating cycle, the refrigerant coming out of the indoor heat exchanger is initially throttled, and a part of the refrigerant is vaporized to increase the subcooling degree of the other part of the refrigerant, increasing the number of flash evaporators. The evaporator can mor...

Embodiment 3

[0029] The difference between this embodiment and the first embodiment is that in this embodiment, the compressor has only one suction port, and the steam outlet 122 of the flasher 12 is connected to the suction port of the compressor 11 through a pipeline. Port 111 is connected; equivalent to the suction port of compressor 11, the intermediate pressure gas (state point 9) that will come out from the steam outlet 122 of the flash evaporator 12 and then enters from the outdoor unit heat exchanger 17 to evaporate to state point 1 The gases are mixed first and then inhaled. The suction temperature of the compressor is increased, and the heating capacity and energy efficiency ratio of the whole system are improved.

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Abstract

This invention relates to a super low temperature heat pump air conditioner system which has good heating effect even under outdoor super low temperature working state. The system includes compressor, main throttling component, indoor external heat exchanger, gas-liquid separator, four-way valve and electromagnetic valve. Each part is connected through pipeline. The system also has a flash evaporator groupware. One outlet of the flash evaporator groupware connects to the air absorbing opening of compressor through pipeline. This invention uses enhanced air jet scroll compressor and steam spraying system. When heating under low temperature working state, the flash evaporator is used to spray refrigerant. It makes the compressor absorb more refrigerant. It fulfills quasi-double stages compression. The heating quantity and energy-efficiency ratio are increased. It can also keep low compression ratio and exhausting temperature. The air conditioner can work steady.

Description

technical field [0001] The invention relates to the field of air source heat pump air conditioners, in particular to an ultra-low temperature heat pump air conditioner system with good heating effect under outdoor ultra-low temperature conditions. Background technique [0002] At present, the ordinary air source heat pump air conditioners sold in the market, under the condition of outdoor low temperature, the heating capacity attenuation is very serious, and even cannot start and run normally; Once in use, ordinary air source heat pump air conditioners can hardly meet the basic heating needs in the cold winter season. As we all know, the traditional central heating methods in northern my country mainly use coal and gas, but this heating method cannot meet the requirements of social development in terms of energy saving, environmental protection or safety. Therefore, it is necessary to develop an ultra-low temperature heat pump air conditioner that can operate normally in se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00
Inventor 张辉黄辉孟宪运刘北泉陈伟文超
Owner GREE ELECTRIC APPLIANCES INC
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