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Cooling system, method and air-conditioning equipment for frequency converter capable of uniform cooling of frequency converter

A technology of cooling system and frequency converter, which is applied in mechanical equipment, electrical equipment structural parts, cooling/ventilation/heating transformation, etc. It can solve problems such as large temperature difference and condensation of frequency converter, achieve uniform cooling, improve reliability and The effect of service life

Active Publication Date: 2021-09-07
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a cooling system, method and air-conditioning equipment for a frequency converter that can uniformly cool down the frequency converter, so as to solve the problem of condensation in the frequency converter caused by excessive temperature difference due to local cooling in the prior art

Method used

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  • Cooling system, method and air-conditioning equipment for frequency converter capable of uniform cooling of frequency converter
  • Cooling system, method and air-conditioning equipment for frequency converter capable of uniform cooling of frequency converter
  • Cooling system, method and air-conditioning equipment for frequency converter capable of uniform cooling of frequency converter

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Embodiment 1

[0077] figure 1 It is a structural diagram of a cooling system of a frequency converter according to an embodiment of the present invention, such as figure 1 As shown, the system includes: an inlet pipeline 1, communicated with the outlet of the condenser 6, so that the low-temperature refrigerant discharged from the condenser 6 enters the first cooling branch and the second cooling branch; the first cooling branch 2, one end It is connected to the inlet pipeline 1, and the other end passes between the inverter box body 41 and the inverter working module 42, and communicates with the outlet pipeline 5, which is used for air between the inverter box body 41 and the inverter working module 42. Perform heat exchange, and then reduce the temperature of the inverter box 41; the second cooling branch 3, one end communicates with the inlet pipeline 1, and the other end passes through the inverter working module 42, communicates with the outlet pipeline 5, and is used to communicate w...

Embodiment 2

[0081] figure 2 It is a structural diagram of a cooling system of a frequency converter according to another embodiment of the present invention, such as figure 2 As shown, on the basis of the system of Embodiment 1, it also includes:

[0082] The first valve 21 is set on the first cooling branch 2 and is used to control whether the refrigerant flows through the first cooling branch 2 by opening or closing. Specifically, the first valve 21 can be an electromagnetic The opening or closing of the valve is controlled by an electric signal, and it can also be other types of valves, which are not specifically limited in the present invention. By setting the first valve 21, the opening or closing of the first cooling branch 2 can be controlled, and it can be controlled under different conditions. Next, control the opening or closing of the first cooling branch 2, and then control whether there is refrigerant flowing through the first cooling branch 2, so as to control whether to ...

Embodiment 3

[0088] image 3 It is a flowchart of a cooling method for a frequency converter according to an embodiment of the present invention, such as image 3 As shown, the method includes:

[0089] S301. Obtain the air temperature between the inverter box and the working module, the air temperature outside the inverter box, and the operating status of the compressor. The air temperature between the inverter box and the working module can be obtained through the In the air between the working modules, that is, a temperature sensor is installed in the inverter cabinet. The temperature in the inverter cabinet can be detected by the temperature sensor, which can reflect the temperature of the inverter cabinet; A temperature sensor is set in the air conditioner for detection, and the running state of the compressor can be obtained through a detection system inside the air conditioner.

[0090] S302. According to the air temperature between the inverter box and the working module and the ...

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Abstract

The invention discloses a cooling system, a method and an air conditioner for a frequency converter which can make the frequency converter cool down evenly. The system includes: a first cooling branch, one end of which is connected to the inlet pipeline, and the other end is connected to the outlet pipeline through the working modules of the inverter box, and is used for cooling with the air between the inverter boxes. heat exchange, thereby reducing the air temperature between the inverter box and the working module; the second cooling branch, one end is connected to the inlet pipeline, the other end is connected to the outlet pipeline through the inverter working module, and is used to communicate with all the Heat exchange is performed between the working modules of the frequency converter, thereby reducing the temperature of the working modules of the frequency converter. Through the invention, the inverter working module and the inverter box are cooled separately by adopting double branches, which can realize the uniform cooling of the inverter, avoid the problem of condensation of the inverter due to excessive temperature difference caused by partial cooling, and improve the air conditioning equipment. reliability and service life.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a cooling system and method for a frequency converter capable of uniform cooling of the frequency converter and air conditioning equipment. Background technique [0002] The long-term operation of the frequency converter in the frequency conversion unit will cause the temperature of the working module of the frequency converter and the casing to rise abnormally, so it needs to be cooled. Conventional inverter cooling method is to add cooling devices (such as fans) in the inverter to dissipate heat. This method increases the space structure of the inverter and increases the cost, but the cooling effect is not good; another cooling method is to use air conditioners. The low-temperature refrigerant in the refrigerant circulation system is used for cooling and cooling. While enhancing the cooling effect, it is easy to cause excessive temperature difference due to local cooli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00H05K7/20F24F11/30F24F11/64F24F11/84F24F11/61
CPCF24F11/30F24F11/61F24F11/64F24F11/84H02M1/00H05K7/20936
Inventor 卓明胜陈培生程琦黄凯亮林少丹
Owner GREE ELECTRIC APPLIANCES INC
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