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Multi-split system and outdoor unit thereof, control method and device, and storage medium

A technology of a multi-line system and control method, which is applied in refrigeration and liquefaction, refrigerators, compressors, etc., can solve the problem that the air inlet of the compressor cannot provide medium-pressure gaseous refrigerant, and it is difficult for the air outlet of the compressor to inject enthalpy. , limit the improvement of energy efficiency, etc., to achieve the effect of preventing burnout, preventing liquid shock, and reducing the superheat of suction

Active Publication Date: 2019-02-26
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

[0002] At present, the existing two-pipe heat recovery multi-connection system, because the air return pipe on the outdoor unit side of the air conditioner only has low-pressure gaseous refrigerant, it cannot provide medium-pressure gaseous refrigerant for the air injection port of the air injection enthalpy compressor, so it is difficult to realize it at the compressor air outlet Enthalpy injection, so the air injection enthalpy increasing technology is currently only used in heat pumps and three-pipe heat recovery systems, and there is no two-pipe heat recovery multi-line system with the function of air injection enthalpy increase, which limits the energy efficiency of the two-pipe heat recovery multi-line system promote

Method used

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  • Multi-split system and outdoor unit thereof, control method and device, and storage medium
  • Multi-split system and outdoor unit thereof, control method and device, and storage medium
  • Multi-split system and outdoor unit thereof, control method and device, and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0099] The outdoor throttling device includes an outdoor main throttling device 61 and an outdoor auxiliary throttling device 62. The inlet of the main circuit communicates with the refrigerant input pipe 413 through the second pipeline 402, and the outlet of the main circuit passes through the third pipeline 403 and the second pipeline respectively. The four pipelines 404 are connected to the input end of the outdoor heat exchanger 30 and the entrance of the auxiliary pipeline, the outdoor main throttling device 61 is arranged on the third pipeline 403, and the outdoor auxiliary throttling device 62 is arranged on the fourth pipeline 404, as Figure 1 to Figure 6 shown.

[0100] The outdoor throttling device includes an outdoor main throttling device 61 and an outdoor auxiliary throttling device 62, and the main road inlet of the outdoor subcooler 50 communicates with the refrigerant input pipe 413 of the outdoor unit of the air conditioner through the second pipeline 402, and...

Embodiment 2

[0121] The outdoor throttling device includes an outdoor auxiliary throttling device 62 , the first port of the main circuit communicates with the refrigerant output pipe 414 through the second pipeline 402 , and the second port of the main circuit communicates with the outdoor heat exchanger 30 through the third pipeline 403 The output end of the main road is connected, the second port or the first port of the main road is connected with the entrance of the auxiliary road through the fourth pipeline 404, and the outdoor auxiliary throttling device 62 is arranged on the fourth pipeline 404, such as Figure 7 to Figure 12 shown.

[0122]The outdoor throttling device includes an outdoor auxiliary throttling device 62, and the first port of the main circuit of the outdoor subcooler 50 communicates with the refrigerant output pipe 414 of the outdoor unit of the air conditioner through the second pipeline 402, and the second port communicates with the refrigerant output pipe 414 of ...

Embodiment 3

[0176] The difference from the first embodiment is that the air conditioner outdoor unit is the air conditioner outdoor unit of the second embodiment.

[0177] The flow direction of the refrigerant output by the outdoor unit is basically the same as that in Embodiment 1, and will not be repeated here.

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Abstract

The invention provides an air conditioner outdoor unit, a two-pipe heat recovery multi-split system and a control method and control device thereof, and a storage medium, wherein the air conditioner outdoor unit comprises a main circulation flow path which comprises a first gas-liquid separator, jet enthalpy increasing compressor, reversing device and outdoor heat exchanger which are connected through a pipeline, wherein two ends of the main circulation flow path are respectively communicated with an inlet and outlet of a refrigerant distribution device through a refrigerant output pipe and arefrigerant input pipe; an jet enthalpy increasing flow path which comprises an outdoor subcooler and outdoor throttling device which are connected through a pipeline, wherein the jet enthalpy increasing flow path can be conducted during system refrigeration operation and / or heating operation so as to achieved jet enthalpy increasing; wherein the outdoor subcooler is provided with a main pipelineand an auxiliary pipeline, the outlet of the auxiliary pipeline is respectively connected with an air injection port of the compressor and the inlet of the first gas-liquid separator through a first pipeline and a branch pipeline, and the first pipeline and the branch pipeline are respectively provided with a control valve. According to the invention, the two-pipe control system has the function of increasing the jet enthalpy and can prevent liquid impact from occurring when the jet enthalpy is started.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, and specifically relates to a two-pipe heat recovery multi-connected system and its air conditioning outdoor unit, a control method, a control device, and a computer-readable storage medium. Background technique [0002] At present, the existing two-pipe heat recovery multi-connection system, because the air return pipe on the outdoor unit side of the air conditioner only has low-pressure gaseous refrigerant, it cannot provide medium-pressure gaseous refrigerant for the air injection port of the air injection enthalpy compressor, so it is difficult to realize it at the compressor air outlet Enthalpy injection, so the air injection enthalpy increasing technology is currently only used in heat pumps and three-pipe heat recovery systems, and there is no two-pipe heat recovery multi-line system with the function of air injection enthalpy increase, which limits the energy efficiency of...

Claims

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Application Information

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IPC IPC(8): F25B13/00F25B41/04F25B41/06F25B49/02F25B41/20F25B41/30
CPCF25B13/00F25B2313/0233F25B2313/027F25B2313/029F25B2600/25F25B41/30F25B41/20Y02B30/70
Inventor 颜利波杨国忠王命仁
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD