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Fault detection device and fault detection method

A fault detection and fault technology, applied in the field of fault detection devices, can solve problems such as low reliability and potential safety hazards, and achieve the effect of reducing potential safety hazards and solving low reliability

Pending Publication Date: 2020-11-13
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a fault detection device and a fault detection method to at least solve the technical problems of low reliability and potential safety hazards in the related art of preventing the chassis of an air conditioner from freezing

Method used

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  • Fault detection device and fault detection method
  • Fault detection device and fault detection method

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Experimental program
Comparison scheme
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Embodiment 1

[0030] According to an aspect of an embodiment of the present invention, a fault detection device is provided, figure 1 is a schematic diagram of a fault detection device provided according to an embodiment of the present invention, such as figure 1 As shown, the fault detection device includes: a heating device 11 , a relay 13 and a controller 15 . The fault detection device will be described below.

[0031] The heating device 11 is used to heat the components to be heated of the air conditioner external unit.

[0032] Optionally, the above-mentioned heating device may be an electric heater.

[0033]Optionally, the above-mentioned component to be heated may be the chassis of the outdoor unit of the air conditioner; since the chassis of the outdoor unit of the air conditioner is easy to freeze in winter when the temperature is low, there is a hidden danger of reaching the blades of the external fan. Therefore, The chassis of the outdoor unit needs to be heated to prevent it...

Embodiment 2

[0051] According to an embodiment of the present invention, a method embodiment of a fault detection method is provided. It should be noted that, when applied to any of the above fault detection devices, the steps shown in the flow chart of the accompanying drawings can be performed in a group such as computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0052] Figure 4 is a flowchart of a fault detection method according to an embodiment of the present invention, such as Figure 4 As shown, the fault detection method includes the following steps:

[0053] Step S402, acquiring sampling signals at preset sampling points, and processing the sampling signals to obtain voltage differences between sampling points, wherein the sampling points are sampling positions preset at both ends of the relay in the fault detection devic...

Embodiment 3

[0066] According to another aspect of the embodiments of the present invention, a fault detection device is also provided, Figure 5 is a schematic diagram of a fault detection device according to an embodiment of the present invention, such as Figure 5 As shown, the fault detection device may include: a first acquisition unit 51 , a second acquisition unit 53 and a first determination unit 55 . The fault detection device will be described in detail below.

[0067] The first acquiring unit 51 is used to acquire the sampling signal at the preset sampling point, and process the sampling signal to obtain the voltage difference between the sampling points, wherein, the sampling point is preset between the two relays in the fault detection device end sampling position.

[0068] The second acquiring unit 53 is used to acquire the preset voltage difference between the sampling points of the circuit where the heating device is located in different states, wherein the heating device...

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PUM

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Abstract

The invention discloses a fault detection device and a fault detection method. The fault detection device comprises a heating device used for heating a to-be-heated part of an air conditioner outdoorunit; a relay which is arranged between the heating equipment and a power supply and used for controlling the on-off state of the heating equipment; and a controller which is used for determining a voltage difference value between the sampling points on the basis of sampling signals acquired from sampling points preset at the two ends of the relay, determining whether a circuit where the heating equipment is located has a fault or not according to the voltage difference value, and determining a fault type in combination with the current on-off state of the relay when the circuit has the fault.The technical problems that in the prior art, the reliability of the mode of preventing the air conditioner outdoor unit chassis from freezing is low, and potential safety hazards exist are solved.

Description

technical field [0001] The present invention relates to the technical field of home appliance control, in particular to a fault detection device and a fault detection method. Background technique [0002] In winter, in order to prevent the chassis from freezing and reaching the fan blades, the external unit of the air conditioner often uses the chassis electric heater to heat the chassis to prevent freezing and melting. The existing method is usually started when the temperature is lower than a certain value. The heater, but when the heater is open or short-circuited, the controller cannot detect it, and there is a danger of freezing and damaging the fan blades. [0003] Aiming at the problems of low reliability and potential safety hazards in the way of preventing the icing of the chassis of the air-conditioning external unit in the above-mentioned related technologies, no effective solution has been proposed so far. Contents of the invention [0004] Embodiments of the ...

Claims

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Application Information

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IPC IPC(8): G01R19/10G01R19/165G01R31/52G01R31/56
CPCG01R19/10G01R19/16576G01R31/52G01R31/56
Inventor 吴学增陈代兵李奇芮李忠华陈俊熹
Owner GREE ELECTRIC APPLIANCES INC