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Air conditioner, and overheating protection method and overheating protection device of power device in air conditioner

A technology of power devices and protection devices, applied in the field of overheating protection devices, can solve problems such as inability to meet heat dissipation requirements, achieve the effect of solving overheating damage and ensuring reliable operation

Active Publication Date: 2017-07-14
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, under high temperature conditions, this pure air-cooled heat dissipation method still cannot meet the heat dissipation requirements.

Method used

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  • Air conditioner, and overheating protection method and overheating protection device of power device in air conditioner
  • Air conditioner, and overheating protection method and overheating protection device of power device in air conditioner
  • Air conditioner, and overheating protection method and overheating protection device of power device in air conditioner

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] The method for preventing overheating protection of power devices in an air conditioner, the device for preventing overheating of power devices in an air conditioner, and the air conditioner provided with the device will be described below with reference to the accompanying drawings.

[0032] figure 1 is a control circuit topology diagram of an air conditioner according to an embodiment of the present invention. Such as figure 1 As shown, the controller of the air conditioner may include a rectifier bridge, a PFC (Power ...

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Abstract

The invention discloses an air conditioner, and an overheating protection method and an overheating protection device of a power device in the air conditioner. The power device comprises a rectifier bridge, a power switching tube, a diode and an intelligent power module (IPM); and the power device undergoes heat dissipation through a refrigerant radiating pipe. The overheating protection method comprises the following steps: a pipe temperature of the current refrigerant radiating pipe is acquired; and target running frequency of a compressor in the air conditioner is adjusted according to the pipe temperature of a current refrigerant radiating pipe in order to allow the power device to work within a safe working temperature range. The target running frequency of the compressor in the air conditioner is adjusted according to the pipe temperature of the current refrigerant radiating pipe in order to allow the power device to work within the safe working temperature range, so that the problem that the power device is damaged due to overheating is solved effectively, and reliable operation of the air conditioner is ensured.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an overheat protection method for power devices in an air conditioner, an overheat protection device for power devices in an air conditioner, and an air conditioner with the device. Background technique [0002] In the electronic control of the inverter air conditioner, there are power devices such as IPM (Intelligent Power Module, Intelligent Power Module), IGBT (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor), rectifier bridge, and fast recovery diode. A lot of heat is generated during work, which can easily cause overheating damage. Therefore, pure air-cooled heat dissipation can be used for heat dissipation, that is, these power devices are concentrated on a radiator (such as an aluminum radiator), and the contact area with the air is increased through the radiator to improve the heat dissipation effect. [0003] However, under high temperature...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/33F24F11/62F24F11/63F24F11/70
Inventor 黄招彬
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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