Electric controller based on thermally superconductive heat dissipating plate and air conditioner outdoor unit

Abstract

An electric controller based on a thermally superconducting heat dissipation plate (2) comprises an electric controller body (1) and the thermally superconducting heat dissipation plate (2); the electric controller body (1) comprises a PCB circuit board (11) and an electronic component (12); the electronic component (12) comprises a high-heat-output power device (121) and a low-heat-output electronic component (122), the high-heat-output power device (121) is located on a first surface of the PCB circuit board (11) and the low-heat-output electronic component (122) is located on a second surface of the PCB circuit board (11); and the thermally superconducting heat dissipation plate (2) is attached to the surface of the high-heat-output power device (121). Also disclosed is an air conditioner outdoor unit using the electric controller.

Description

BACKGROUND OF THE PRESENT INVENTIONField of Invention[0001]The present invention relates to the technical field of air conditioning devices, and in particular, to an electric controller based on a thermally superconducting heat dissipation plate, and an air conditioner outdoor unit.Description of Related Arts[0002]With the development of technology, people have higher requirements on quality of life, high-efficient, silent, variable-frequency, and energy-saving air conditioners with intelligent control have become indispensable in daily life. As function of the electric controller of an air conditioner becomes stronger, power modules such as an insulated gate bipolar transistor (IGBT), a metal-oxide semiconductor field-effect transistor (MOSFET), a diode, and an intelligent power module (IPM) in the electric controller generate more heat, and a heat dissipation requirement becomes higher. Therefore, air conditioner manufacturer pays more attention to thermal designs of electric cont...

AI Technical Summary

Benefits of technology

[0024]2) The electric controller is disposed vertically to facilitate installation of the thermally superconducting heat dissipation plate, so that an available space of the thermally superconducting heat dissipation plate is increased and the heating electronic component is located at a lower end of the thermally superconducting heat dissipation plate, facilitating heat conduction of the thermally superconducting heat dissipation plate from bottom to top.

[0025]3) The high-heat-output power device in the electric controller is disposed on one surface of the PCB circuit board, and the low-heat-output electronic component is disposed on the other surface of the PCB circuit board, thereby facilitating installation of the thermally superconducting heat dissipation plate and the high-heat-output power device as well as protection for other electronic components, and enhancing the reliability of the air conditioner outdoor unit.

[0026]4) The cooling fins are disposed on the thermally superconducting heat dissipation plate, thereby effectively increasing the heat dissipation area, improving the heat dissipation capability, and expanding a usage range of the electric controller of the air conditioner.

[0027]5) The thermally superconducting heat dissipation plate is provided with the openings, which can enhance air convection on the upper surface of the thermally superconducting heat dissipation plate, help drain water accumulated on the surface of the thermally superconducting heat dissipation plate, and further facilitate water proofing of the electric controller, so that the water proofing of the electric controller is easier.

[0028]6) The thermally superconducting heat dissipation plate is disposed in a gap between the outer edge of the fan and the housing, so that the space of the outdoor unit is utilized effectively while heat is dissipated by using the air flow of the air conditioner fan, thereby enhancing the heat dissipation effect.

[0029]7) The air conditioner outdoor unit according to the present invention does not use a heat dissipation structure that is based on a refrigerant and a cold plate, so that a refrigerant pipeline branch can be reduced while a heat dissipation requirement of the electric controller with high heat output can be met, thereby simplifying the structure of the radiator, reducing system leakage points and improving the reliability of the system.

Problems solved by technology

For a high-performance variable-frequency heat pump air conditioner, the conventional radiator made of extruded aluminum can no longer meet the heat dissipation requirement.

However, refrigerant inlet and outlet pipes need to be disposed in this heat dissipation method, which will make the refrigerant pipeline system of the entire air conditioner complex, and increase the amount of the refrigerant and the load of the compressor.

Moreover, adding refrigerant branch requires joint connections and new pipes, not only costs but also leakage points of the refrigerant system are increased, which will lower the reliability of the system.

Images