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Over-temperature protection circuit and method, air conditioner

A technology of over-temperature protection circuit and temperature-sensing circuit, which is applied to instruments, regulating electrical variables, and control/regulating systems, etc., can solve problems such as frequent restart of equipment and damage to equipment, and achieve the effect of preventing frequent restart of equipment.

Active Publication Date: 2018-12-07
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides an over-temperature protection circuit and method, and an air conditioner to at least solve the technical problem that the over-temperature protection circuit in the related art is likely to cause frequent restarts of the equipment and cause great damage to the equipment

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  • Over-temperature protection circuit and method, air conditioner
  • Over-temperature protection circuit and method, air conditioner
  • Over-temperature protection circuit and method, air conditioner

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses an over-temperature protective circuit and method and an air conditioner. The over-temperature protective circuit includes a compactor and a reference voltage circuit, wherein the compactor is used for comparing the temperature induction voltage of a target device with reference voltage and outputting control signals according to a comparison result, the control signals are used for controlling the target device to be switched on or switched off, and the temperature induction voltage changes along with the temperature changes of the target device; the reference voltage circuit is connected with the compactor and used for outputting the reference voltage corresponding to the voltage value according to different values of the control signals. The over-temperature protective circuit and method and the air conditioner solves the technical problems that over-temperature protective circuits are likely to cause frequent restart of equipment and great damage to the equipment in relative technologies.

Description

technical field [0001] The invention relates to the field of over-temperature protection circuits, in particular to an over-temperature protection circuit and method, and an air conditioner. Background technique [0002] By replacing the AC fan with a DC fan, the energy efficiency level of the air conditioner can be effectively improved. In the application of DC fans, excessive temperature will cause damage to the motor and cause abnormal operation of the motor. Therefore, over-temperature protection is one of its important protection functions. In the prior art, the commonly used over-temperature protection schemes are as follows: [0003] 1. The over-temperature protection of a large number of DC fans is to use the NTC (Negative Temperature Coefficient, negative temperature coefficient) resistor or PTC (Positive Temperature Coefficient, positive temperature coefficient) resistor in the intelligent power module to detect the temperature, and the temperature change will cau...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/569
CPCG05F1/569
Inventor 敖文彬郭伟林姚丽娜吴文贤陈兰兰
Owner GREE ELECTRIC APPLIANCES INC
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