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Multiple on-line system and control method thereof

A technology of a multi-connected system and control method, applied in refrigerators, compressors, refrigeration components, etc., can solve the problems of changing the refrigerant circulation volume, compressor liquid hammer, reducing energy efficiency, etc., so as to improve reliability and avoid liquid hammer problems. , the effect of improving energy efficiency

Active Publication Date: 2018-10-30
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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AI Technical Summary

Problems solved by technology

[0002] Usually, a multi-connected system is equipped with multiple indoor units with one outdoor unit. Therefore, under different working conditions and different loads, the amount of refrigerant required for the actual operation of the system varies. During the installation process of a multi-connected system, the refrigerant The charging amount is determined according to the design value of full load. However, the actual refrigerant circulation amount cannot be changed according to the actual load during system operation, so that the refrigerant amount of the system is too much or too little, which not only reduces the energy efficiency of the system operation, It may also cause the compressor to return to the liquid and cause liquid shock, which will reduce the reliability of the system operation.

Method used

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  • Multiple on-line system and control method thereof
  • Multiple on-line system and control method thereof

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] The multi-connection system and the control method of the multi-connection system according to the embodiments of the present invention are described below with reference to the accompanying drawings.

[0028] figure 1 is a schematic structural diagram of a multi-line system according to an embodiment of the present invention. Such as figure 1 As shown, the multi-connected system may include: an outdoor unit 10 , a plurality of indoor units 20 and a refrigerant amount regulating device 30 .

[0029] Among them, the plur...

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Abstract

The invention discloses a multiple on-line system and a control method thereof. The multiple on-line system comprises an outdoor unit, multiple indoor units and a refrigerant amount adjusting device.The outdoor unit comprises a compressor, a four-way valve, an outdoor heat exchanger and an outdoor throttling valve; the refrigerant amount adjusting device comprises an intermediate heat exchanger,an adjustable throttling valve, an electromagnetic valve and a gas-liquid separator, and is used for enabling the refrigerant amount to reach to the appropriate state through controlling the electromagnetic valve to be opened and adjusting the opening degree of the adjustable throttling valve when the refrigerant amount of the multiple on-line system is excessive or in shortage. According to the multiple on-line system provided by the embodiment of the invention, not only can the energy efficiency of system operation be improved, but also the liquid impact problem produced by liquid return ofthe compressor can be avoided, and the system operation reliability is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a multi-connection system and a control method for the multi-connection system. Background technique [0002] Usually, a multi-connected system is equipped with multiple indoor units with one outdoor unit. Therefore, under different working conditions and different loads, the amount of refrigerant required for the actual operation of the system varies. During the installation process of a multi-connected system, the refrigerant The charging amount is determined according to the design value of full load. However, the actual refrigerant circulation amount cannot be changed according to the actual load during system operation, so that the refrigerant amount of the system is too much or too little, which not only reduces the energy efficiency of the system operation, It is also possible to cause the compressor to return liquid and produce liquid hammer, which reduces the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B13/00F25B41/06F25B41/30
CPCF25B13/00F25B2313/0231F25B2600/25F25B41/30
Inventor 卜其辉许永锋梁伯启李宏伟吴孔祥董世龙吴晓鸿张宇
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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