Multi-compressor air conditioning system and control method thereof

An air-conditioning system and multi-compressor technology, applied in air-conditioning systems, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve problems such as compressor burnout and large load, and achieve the effect of improving system operation reliability.

Inactive Publication Date: 2015-07-22
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] The technical problem to be solved by the present invention is to provide a multi-compressor air-conditioning system and its control method, so as to solve the problem of "starting with pressure difference, causing the compressor to be overloaded when starting, and the compressor to burn out" in the prior art. question

Method used

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  • Multi-compressor air conditioning system and control method thereof
  • Multi-compressor air conditioning system and control method thereof

Examples

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Effect test

no. 1 example

[0035] Such as figure 1 Shown, a kind of multi-compressor air-conditioning system, it comprises as follows:

[0036] Compressor unit 1, compressor unit 1 includes an exhaust end and a return air end; compressor unit 1 includes two compressors connected in parallel, each compressor has an exhaust port and an air return port, and each compressor has a single exhaust port. The exhaust end is composed of multiple exhaust ports, and the air return end is composed of multiple air return ports; the two compressors include a main compressor 11 and a slave compressor 12, and the exhaust from the compressor 12 A return trachea is provided between the port and the air return port, and a solenoid valve 13 is provided on the return trachea.

[0037] Four-way valve 2, four-way valve 2 has four ports of evaporator end E, suction end S, exhaust end D and condenser end C, the exhaust end of compressor unit 1 and the exhaust end D of four-way valve 2 Connected by pipes; the evaporator end E o...

no. 2 example

[0051] Such as figure 2 Shown, a kind of multi-compressor air-conditioning system, it comprises as follows:

[0052] Compressor unit 1, compressor unit 1 includes an exhaust end and a return air end; compressor unit 1 includes at least two compressors connected in parallel, each compressor has an exhaust port and an air return port, and the exhaust port of each compressor is provided with One-way valve; the exhaust end is composed of multiple exhaust ports, and the gas return port is composed of multiple gas return ports; the compressor unit 1 includes three compressors connected in parallel, and the three compressors are divided into one main compressor 11, one The first slave compressor 12, a second slave compressor 14; two are all provided with a return trachea between the exhaust port and the air return port of the compressor (12; 14), and each return trachea A solenoid valve (13; 15) is provided.

[0053] Four-way valve 2, four-way valve 2 has four ports of evaporator ...

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Abstract

The invention relates to a multi-compressor air conditioning system which comprises a compressor unit, a four-way valve, an outdoor heat exchanger and a gas-liquid separator. The compressor unit comprises an exhaust end and a gas return end; the compressor unit comprises at least two compressors which are connected with each other in parallel, each compressor is provided with an exhaust hole and a gas return hole, and the exhaust hole of each compressor is provided with a one-way valve; the exhaust end is composed of the multiple exhaust holes, and the gas return end is composed of the multiple gas return holes; at least two compressors comprise a main compressor and at least one auxiliary compressor, a gas exhaust and return pipe is arranged between the exhaust hole and the gas return hole of each auxiliary compressor, and a magnetic valve is arranged on each gas exhaust and return pipe. The invention further relates to a control method for the multi-compressor air conditioning system. The multi-compressor air conditioning system and the control method thereof have the advantages that when the auxiliary compressors stop operating, the magnetic valves are opened, the gas exhaust and the gas return of the auxiliary compressors are communicated to quickly balance the pressure in the compressors, therefore, the auxiliary compressors can be prevented from being started with pressure difference, and the operational reliability of the system can be improved.

Description

technical field [0001] The invention relates to a multi-compressor air-conditioning system and a control method thereof. Background technique [0002] At present, most of the air-conditioning systems are equipped with two or more compressors. Through the different number of compressors, the output of cooling or heating can be changed to meet the needs of users and provide users with a more comfortable experience. Specifically, when the user turns on and off the indoor unit, or adjusts the set temperature of the indoor unit, the output of the outdoor unit of the air conditioner changes, and the corresponding compressor appears, running→stop→running. When the compressor is running, the exhaust side There will be a certain pressure difference between the exhaust side and the return air side. When the compressor stops running, the pressure difference between the exhaust side and the return air side will take a certain amount of time to balance. There will be a start with a pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/00F24F1/10F25B41/04F25B41/06F24F11/00F25B41/24F25B41/34
CPCF24F1/10F24F1/16F24F11/00F25B49/022Y02B30/70
Inventor 卜其辉许永锋梁伯启李宏伟蒋运鹏吴晓鸿
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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