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Air conditioning method and system for supplementing air and increasing enthalpy, and air conditioner

A technology of replenishing air to increase enthalpy and air conditioning, which is applied in the directions of damage protection, fluid circulation arrangement, refrigeration safety arrangement, etc. It can solve problems such as low efficiency of compressors, increased thermal resistance of heat exchangers, and poor heat transfer effects. Achieve the effects of improving operating efficiency, reducing frosting speed, and increasing superheat

Active Publication Date: 2017-05-03
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When frost occurs on the outdoor heat exchanger, the heat transfer effect will become poor, and the frost will gradually increase. The thermal resistance of the heat exchanger will increase, resulting in a decrease in heat exchange capacity. The refrigerant cannot absorb enough heat and returns directly to the compressor. Compressor is not efficient

Method used

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  • Air conditioning method and system for supplementing air and increasing enthalpy, and air conditioner
  • Air conditioning method and system for supplementing air and increasing enthalpy, and air conditioner
  • Air conditioning method and system for supplementing air and increasing enthalpy, and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1, such as figure 1 , 2 As shown, an air conditioning enthalpy-increasing system includes a refrigerant circulation circuit composed of a compressor 1, a reversing valve 2, an outdoor heat exchanger 3 and an indoor heat exchanger 7; the outdoor heat exchanger 3 and the indoor heat exchange An evaporating device 4 is connected to the main flow path between the devices 7, and an auxiliary flow path 62 is drawn from the main flow path 61 between the outdoor heat exchanger 3 and the indoor heat exchanger 7, and the auxiliary flow path 62 passes through the evaporating device 4 exchanges heat with the main channel 61, and then connects to the compressor 1, a throttling device 5 is fixed at the inlet of the auxiliary channel evaporating device, and a first temperature sensing device 81 is fixed at the outlet of the outdoor heat exchanger 3 , a second temperature sensing device 82 is fixed at the outlet of the auxiliary channel evaporating device 4, a pressure sensing...

Embodiment 2

[0049] Example 2, such as image 3 As shown, on the basis of Embodiment 1, an indoor heat exchanger 7 is added, which are respectively the first indoor heat exchanger 71 and the second indoor heat exchanger 72, and the number of the indoor heat exchangers can also be greater than two One, the indoor heat exchanger can be fully turned on for cooling, or partially turned on for cooling, and partially on standby.

Embodiment 3

[0050] Example 3, such as Figure 4 As shown, a method for air-conditioning air supplementation and enthalpy increase comprises the following steps:

[0051] Step S1, using the first temperature sensing device 81 to detect the outlet temperature Ta of the outdoor heat exchanger 3, the second temperature sensing device 82 to detect the outlet temperature Ts of the evaporating device 4, and using the pressure sensing device 83 to detect the return air pipe pressure Pe;

[0052] Step S2, the controller 13 calculates the degree of superheat Tsh at the outlet of the auxiliary flow path of the evaporation device according to the outlet temperature Ts of the evaporation device 4 and the pressure Pe of the return air pipe, and adjusts the throttle according to the outlet temperature Ta of the outdoor heat exchanger 3 and the degree of superheat Tsh at the outlet of the auxiliary flow path of the evaporation device. The opening of the flow device (5).

[0053] like Figure 5 As shown...

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Abstract

The present invention relates to a system and method for supplementing air and increasing enthalpy of an air conditioner. The system includes a refrigerant circulation circuit composed of a compressor, a reversing valve, an outdoor heat exchanger and an indoor heat exchanger; the outdoor heat exchanger and the indoor heat exchange An evaporator is connected to the main flow between the heat exchangers, and an auxiliary flow is drawn from the main flow between the outdoor heat exchanger and the indoor heat exchanger, and the auxiliary flow is connected to the compressor through the evaporator and the main flow through heat exchange, A throttling device is fixed at the inlet of the auxiliary flow path evaporating device, a first temperature sensing device is fixed at the outlet of the outdoor heat exchanger, and a second temperature sensing device is fixed at the outlet of the auxiliary flow path evaporating device , a pressure sensing device is fixed on the air return pipe of the compressor. The invention can slow down the frosting speed of the outdoor heat exchanger, ensure that the heat exchange capacity of the outdoor heat exchanger is fully utilized, and increase the superheat degree of the refrigerant at the outlet of the outdoor heat exchanger; at the same time, the superheat degree and enthalpy of the refrigerant on the return air side of the compressor are improved , thereby improving the operating efficiency of the compressor.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning method and system for replenishing air and increasing enthalpy, and an air conditioner. Background technique [0002] The refrigerant circulation of the existing air conditioner is composed of a compressor connected at the end, a reversing valve, an indoor heat exchanger, an outdoor heat exchanger and a reversing valve, so as to realize the cooling and heating of the air conditioner. [0003] The existing technical solution does not have a supercooling device, and the refrigerant entering the outdoor heat exchanger directly exchanges heat with the outside. When frost occurs on the outdoor heat exchanger, the heat transfer effect will become poor, and the frost will gradually increase. The thermal resistance of the heat exchanger will increase, resulting in a decrease in heat exchange capacity. The refrigerant cannot absorb enough heat and returns dire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B41/00F25B47/02F25B49/02F25B41/40
Inventor 马熙华熊美兵许永锋胡伟龙
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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