Low temperature heat pump air conditioning system

Abstract

The invention relates to a low temperature heat pump air conditioning system, consisting of a compressor, an electromagnetic four-way valve, an outdoor heat exchanger, a throttle mechanism, a super cooling intercooler, an indoor heat exchanger and a gas-liquid separator. In the invention, an air supply device for the super cooling intercooler is provided, when heating is carried out under the low temperature working condition, the super cooling intercooler is used for supplementing the compressor with medium pressured saturated refrigerant gas to increase the super cooling degree of the refrigerant in the main circulation and simultaneously increase inspiration capacity of the compressor so as to enhance the mass flux of the refrigerant in the main circulation, thus heating capacity is increased and compression ratio and gas discharge temperature are decreased. The low temperature heat pump air conditioning system has the advantages of simple structure, easy manufacturing, low manufacturing cost, high efficiency, energy-saving, stable and reliable operation, etc.

Description

1. Technical field [0001] The invention relates to the field of air source heat pump air conditioners, in particular to a heat pump air conditioner system with good heating effect under outdoor low temperature conditions. 2. Background technology [0002] At present, the ordinary air source heat pump air conditioners sold in the market have serious attenuation of heating capacity under 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 transitional seasons. In the cold winter, the basic heating demand cannot be met. Therefore, in cold areas, the traditional central heating method is generally still used, and these heating methods need to consume a lot of minerals or oil, which pollutes the environment and is not economical. Now the world Advocate energy saving and emission reduction. Some low-temperature heat pump air-conditioning systems use a frequency conversion system or a scro...

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 condition of outdoor low temperature, and even cannot start and run normally. In the cold regions of northern my country, they can only be used in transitional seasons

In the cold winter, the basic heating demand cannot be met. Therefore, in cold areas, the traditional central heating method is generally still used, and these heating methods need to consume a lot of minerals or oil, which pollutes the environment and is not economical. Now the world Advocate energy saving and emission reduction

Some low-temperature heat pump air-conditioning systems use a frequency conversion system or a scroll compressor with two suction ports for steam injection and enthalpy increase. This makes the system complex and increases the cost. Therefore, it is necessary to develop a simple structure, easy manufacture, and low cost. High-efficiency and energy-saving low-temperature heat pump air-conditioning system

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