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A multi-connected air-conditioning system and its control method for variable load

A technology of multi-connected air conditioners and compressors, which is applied to the operation mode of machines, refrigerators, refrigeration components, etc., can solve problems such as reducing reliability, reducing energy efficiency of multi-connecting air-conditioning systems, and inability to change the amount of refrigerant circulation.

Inactive Publication Date: 2018-11-06
文登源泰精密机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] A multi-connected air-conditioning system generally has one outdoor unit equipped with multiple indoor units. Therefore, under different working conditions and different loads, the amount of refrigerant required for the actual operation of the system varies. , the refrigerant charging amount is determined according to the full load design value, and the actual refrigerant circulation amount cannot be changed according to the actual load during operation. hit, reducing reliability

Method used

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  • A multi-connected air-conditioning system and its control method for variable load
  • A multi-connected air-conditioning system and its control method for variable load
  • A multi-connected air-conditioning system and its control method for variable load

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Embodiment Construction

[0037] The present invention will be further described below through specific embodiments.

[0038] Such as figure 1A multi-connected air-conditioning system and its variable load control method are shown, the multi-connected air-conditioning system includes: a compressor 10, the compressor 10 has an exhaust port 11 and a return port 12, and the return port of the compressor 10 A return air temperature sensor 13 and a return air pressure sensor 14 are provided near the air port 12, an exhaust temperature sensor 15 and an exhaust pressure sensor 16 are provided near the exhaust port 11 of the compressor 10; a four-way valve 20, the four The one-way valve 20 has a first port 21, a second port 22, a third port 23 and a fourth port 24, the first port 21 of the four-way valve 20 is connected to the exhaust port 11 of the compressor 10, the The third interface 23 of the four-way valve 20 is connected to the air return port 12 of the compressor 10; the outdoor heat exchanger 30, one...

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Abstract

The invention discloses a multi-connected air-conditioning system and a load-changing control method thereof. The multi-connected air-conditioning system includes: a compressor, a four-way valve, an outdoor heat exchanger, an electronic throttling component, an air-side cut-off valve, and an indoor heat exchange device, liquid side shut-off valve, first solenoid valve, second solenoid valve, liquid storage tank, third solenoid valve and capillary. By setting the liquid storage tank and three solenoid valves, under the cooling and heating operation, according to the actual operating load, the current amount of refrigerant is judged by pressure, temperature, superheat and other conditions. When the amount of refrigerant circulation needs to be adjusted, through Switch the solenoid valve to realize the storage and release of the refrigerant, and adjust the actual circulation of the refrigerant.

Description

technical field [0001] The invention belongs to the field of electrical appliances, and relates to a multi-connected air-conditioning system, in particular to a multi-connected air-conditioning system and a control method for variable loads thereof. Background technique [0002] A multi-connected air-conditioning system generally has one outdoor unit equipped with multiple indoor units. Therefore, under different working conditions and different loads, the amount of refrigerant required for the actual operation of the system varies. , the refrigerant charging amount is determined according to the full load design value, and the actual refrigerant circulation amount cannot be changed according to the actual load during operation. hit, reducing reliability. [0003] The Chinese utility model patent with application number 200320107603.9 is an intelligent multi-connected central air conditioner with variable refrigerant flow rate. The compressor, high pressure switch, oil sepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B29/00F25B41/04F25B49/02F25B41/20
Inventor 不公告发明人
Owner 文登源泰精密机械厂
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