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Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner

A technology of supplementing air and increasing enthalpy and air conditioning, which is applied in refrigeration safety arrangement, fluid circulation arrangement, refrigeration components, etc., can solve the problems of low compressor efficiency and inability to effectively adjust the low pressure of the system, and achieves the improvement of enthalpy value and efficiency. Effect

Active Publication Date: 2015-11-18
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

[0003] However, the existing technical solution does not have a supercooling device, and when the system low pressure is too low, effective adjustment cannot be made, and the compressor can only absorb a very small amount of refrigerant to do work and compress, resulting in low efficiency of the compressor

Method used

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  • Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner
  • Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner
  • Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 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 performs heat exchange with the main flow path 61, and then is connected to the compressor 1. A throttling device 5 is fixed at the entrance of the evaporating device of the auxiliary flow path 62, and a throttling device 5 is fixed at the outlet of the evaporating device 4 of the auxiliary flow path 62. A temperature sensing device 8, a pressure sensing device 9 is fixed on the air return pi...

Embodiment 2

[0046] 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

[0047] Example 3, such as Figure 4 As shown, a method for air-conditioning to supplement air and increase enthalpy comprises the following steps:

[0048] Step S1, using the temperature sensing device 8 to detect the outlet temperature T of the evaporation device 4, and using the pressure sensing device 9 to detect the return air pipe pressure Pe;

[0049] In step S2, the controller 13 calculates the outlet superheat Tsh of the auxiliary flow path of the evaporation device according to the outlet temperature T of the evaporator 4 and the return air pipe pressure Pe, and adjusts the opening of the throttling device according to the return air pipe pressure Pe and the auxiliary flow outlet superheat Tsh.

[0050] Such as Figure 5 As shown, in 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 T of the evaporation device 4 and the pressure Pe of the return air ...

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Abstract

The invention relates to a system and a method for air supplying and enthalpy increasing for an air conditioner. The system comprises a refrigerant circulation loop composed of a compressor, a reversing valve, an outdoor heat exchanger and an indoor heat exchanger, wherein an evaporation device is connected to a main flow path between the outdoor heat exchanger and the indoor heat exchanger; an auxiliary flow path is led from the main flow path between the outdoor heat exchanger and the indoor heat exchanger; the auxiliary flow path carries out heat exchange with the main flow path through the evaporation device, and then is connected to the compressor; a throttling device is fixed at an inlet of the evaporation device of the auxiliary flow path; a temperature-sensing device is fixed at an outlet of the evaporation device of the auxiliary flow path; and a pressure-sensing device is fixed on an air return pipe of the compressor. According to the system and the method disclosed by the invention, a part of a refrigerant is led out from a supercooling device in case of an over-low pressure in the system, and the refrigerant in the auxiliary flow path is evaporated by the evaporation device and then injected to a low-pressure side of the system through adjustment of the throttling device, thereby achieving the purpose of increasing the low pressure and the enthalpy value of the air-returned refrigerant. Thus, the efficiency of the compressor is improved.

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] However, the existing technical solution does not have a subcooling device, and when the system low pressure is too low, effective adjustment cannot be made, and the compressor can only absorb a very small amount of refrigerant to do work and compress, resulting in low efficiency of the compressor. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an air-conditioning air-supplementing and enthalpy-incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25B41/00F25B41/40
CPCF25B41/00F25B49/02
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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