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Air-conditioning system

An air-conditioning system and refrigerant technology, which is applied in air-conditioning systems, space heating and ventilation, heating methods, etc., can solve the problems of lower energy efficiency ratio, low refrigerant utilization rate, waste of resources, etc., to achieve high refrigerant utilization rate and improve stability. , Improve the effect of running stability

Inactive Publication Date: 2015-09-02
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, after throttling twice, the refrigerant utilization rate is about 0.8*0.8=0.64, which is low
However, the power of the compressor remains unchanged, resulting in lower energy efficiency ratio and waste of resources

Method used

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Examples

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Embodiment Construction

[0038] figure 2 is a schematic system schematic diagram of an air conditioning system according to an embodiment of the present invention. Such as figure 2 As shown, the air conditioning system may generally include a compressor 10 , a condenser 20 , a subcooling device 30 , an air conditioning expansion valve 40 and an evaporator 50 connected through refrigerant pipelines.

[0039] The compressor 10 is configured to compress the gaseous refrigerant flowing thereinto increase the temperature and pressure of the refrigerant. In particular, the compressor 10 adopts an inverter compressor. By controlling the operating frequency of the inverter compressor, the amount of refrigerant absorbed and discharged by the inverter compressor can be adjusted, that is, more refrigerant can enter the evaporator 50 through variable capacity, so as to improve the utilization of refrigerant. Rate.

[0040] The condenser 20 is configured to receive the refrigerant flowing out from the inverte...

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Abstract

The invention provides an air-conditioning system. The air-conditioning system comprises a frequency conversion compressor, condensers, a super-cooling device, an air-conditioning expansion valve and an evaporator which are connected through refrigerant pipelines. The super-cooling device is configured to receive a total flow path refrigerant flowed out from the condensers. The total flow path refrigerant is distributed into a main pipeline and a branch pipeline of the super-cooling device when the total flow path refrigerant is flowed into the super-cooling device. The refrigerant flowed into the branch pipeline is subjected to throttling expansion through a super-cooling expansion valve arranged on the branch pipeline, then cools the refrigerant in the main pipeline or the total flow path refrigerant through heat exchange, and finally flows into a refrigerant input pipe of the frequency conversion compressor, so that the working temperature of the frequency conversion compressor can be reduced to a preset temperature range. By employing the air-conditioning system, the operation stability of the compressor is improved, and the heating is not attenuated under an outdoor low temperature condition.

Description

technical field [0001] The invention relates to an air conditioning system, in particular to an air conditioning system for heating under low temperature conditions. Background technique [0002] When ordinary fixed-frequency or variable-frequency heat pump air conditioners are heating in low-temperature conditions, due to the low outdoor temperature, the operating conditions of the compressor of the unit are very bad, resulting in an increase in the compression ratio of the compressor and a high exhaust temperature. Seriously affect the operation of the unit. [0003] In order to improve the operating environment of heat pump air conditioners, some air conditioner manufacturers use air-conditioning systems with compressors that increase enthalpy to overcome this problem, that is, use "steam injection to increase enthalpy" to overcome this problem. Specifically, such as figure 1 As shown, the compressor 10 is a steam injection enthalpy increasing compressor, and a flash ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B1/00F25B40/02F25B39/02F24F5/00
CPCF25B1/00F25B40/02F25B41/31
Inventor 袁志杰张治荣隋建军
Owner HAIER GRP CORP
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