Horizontal resistors, inverted controllers and air conditioner outdoor units

Abstract

The invention discloses a horizontal resistor, a backoff controller and an air conditioning outdoor unit, wherein the resistor is arranged on a printed circuit board of the backoff controller, the printed circuit board is provided with a heat radiator and a packaging device required for collecting current at the same side of the resistor, the resistor is horizontally arranged between the printed circuit board and the heat radiator and is close to the packaging device. All devices of the controller are free from dust pollution, and the service life of the controller can be prolonged; the resistor is horizontally arranged between the printed circuit board and the heat radiator and is close to the packaging device required for collecting current, so that the current sampling accuracy of the controller can be improved, the driving control of the controller is facilitated so as to facilitate the use of more large-power resistors in limited spaces; by setting suspending sides of the resistors, and changing the lead-out mode of the resistor, the height of the resistor can be reduced, and the heat radiation reliability of the resistor can be enhanced.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a horizontal resistor, an inverted controller and an air conditioner outdoor unit. Background technique [0002] With the continuous development of the air-conditioning industry, air-conditioners are becoming more and more popular, and the frequency conversion air-conditioning is also developing rapidly, and its technology is becoming more and more mature. Among them, the frequency conversion compressor driving circuit is the core part of the frequency conversion technology, and the current parameters such as the compressor and PFC are the core parameters of the driving circuit. Therefore, the current sampling circuit is particularly important. [0003] At present, in order to collect the current value of the outdoor unit in the shortest time, the current sampling device used in the current sampling circuit basically uses a resistor with an extremely low i...

AI Technical Summary

Problems solved by technology

[0005] The existing positive discharge control has a very serious disadvantage: since the outdoor unit operates in an outdoor environment, if the outdoor electric control box is placed upright, because it has an upward opening, the electronic components are placed in the outdoor electric control box. The upward surface of the control box, the dust can fall on the electronic components, so the external dust will seriously threaten the life of the controller

Considering the uniformity and effectiveness of the heat dissipation of the controller, heat-generating devices such as PFC devices and IPM modules need to be arranged at the center of the radiator 302, and the vertical non-inductive resistor 301 can only be placed outside the radiator 302 due to the height of the body. The non-inductive resistor 301 will be far away from the PFC device and IPM module, which is not conducive to drive control. In severe cases, the outdoor unit will lose control or the control will be inaccurate

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