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Variable frequency air conditioner circuit board and variable frequency air conditioner

An inverter air conditioner and circuit board technology, which is applied to inverter air conditioner circuit boards and inverter air conditioner fields, can solve the problems of rising cost and increasing PCB area, and achieve the effects of compact layout, shortened wiring distance, and reduced PCB area.

Active Publication Date: 2018-08-28
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a circuit board for an inverter air conditioner, which aims to solve the problem that the PCB area increases and the cost increases when designing the existing air conditioner circuit board for DC motors compatible with two driving modes at the same time

Method used

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  • Variable frequency air conditioner circuit board and variable frequency air conditioner
  • Variable frequency air conditioner circuit board and variable frequency air conditioner

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no. 1 example

[0034] Further, as the second embodiment of the inverter air conditioner circuit board provided by the present invention, based on the first embodiment of the compressor control system of the present invention, in this embodiment, the first IPM module IPM1 and the second IPM module are connected The two conductors of the DC bus of the IPM2 are close to the first connection side 106 , and the parts of the DC bus close to the first connection side 106 are arranged parallel to each other. As shown in the figure, the two wires 1021 and 1011 of the DC bus bars 102 and 101 close to the first connecting side 106 are arranged in parallel, so that the area surrounded by the two DC bus bars can be as small as possible. It is very large, and the MCU IC1 between the two IPM modules works on weak current, so the area surrounded by the DC bus should be as small as possible to minimize the interference to the weak current area, and enable IC1 to control the two IPM modules to drive the load ...

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Abstract

The invention provides a variable frequency air conditioner circuit board and a variable frequency air conditioner. A PCB of the variable frequency air conditioner circuit board is provided with a bridge rectifier, filter capacitors, a first IPM, an MCU, a first block terminal, a second IPM and a second block terminal connected with the second IPM module. The first IPM and the second IPM are arranged close to the two side edges of the PCB correspondingly. The MCU is arranged between the first IPM and the second IPM. Furthermore, the second IPM and the first block terminal are arranged close tothe same side edge of the PCB. The first block terminal is arranged close to the connecting side edge of the two side edges. The second block terminal is arranged between the first block terminal andthe second IPM. Devices on the circuit board can be made compact in layout while the circuit board is driven by a DC motor adopting two driving modes, and the wiring distance is short. Accordingly, the area of the PCB of the whole circuit board is reduced, and the cost of the circuit board is reduced.

Description

technical field [0001] The invention relates to the field of frequency conversion air conditioner control, in particular to a frequency conversion air conditioner circuit board and a frequency conversion air conditioner. Background technique [0002] The DC motor used in the outdoor fan of the existing frequency conversion air conditioner is divided into two types according to the driver: built-in type and external type, and the commutation device driven by the motor of the built-in type is arranged on Inside the motor, the commutation device of the external motor is set outside the motor, specifically on the external circuit board connected to the motor interface. In order to meet market needs, in some cases it is necessary to develop a drive that has the above two driving methods at the same time. The control circuit board is compatible with the application of these two motors at the same time. Since these two drive circuits contain strong and weak current parts, the devic...

Claims

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Application Information

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IPC IPC(8): F24F11/88
Inventor 刘胜利廖建珍
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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