Thermal protection device, motor and thermal protection method thereof

A thermal protection device, thermal protection technology, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as large safety hazards, and achieve the effect of overcoming poor safety, good safety, and ensuring safety.

Active Publication Date: 2020-03-10
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a thermal protection device, a motor and a thermal protection method thereof in view of the above defects, so as to solve the potential safety hazards in the motor protection mode in which the thermal protector is automatically disconnected or switched on according to the motor temperature in the prior art. problem, to achieve the effect of improving security

Method used

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  • Thermal protection device, motor and thermal protection method thereof
  • Thermal protection device, motor and thermal protection method thereof
  • Thermal protection device, motor and thermal protection method thereof

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Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] According to an embodiment of the present invention, a thermal protection device is provided. see figure 1 A schematic structural view of an embodiment of the device of the present invention is shown. The thermal protection device may include: a main circuit 10 and a control circuit 20 .

[0032] Specifically, the main circuit 10 may include: a thermal p...

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PUM

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Abstract

The invention discloses a thermal protection device, an electric motor and a thermal protection method thereof. The device comprises a main circuit (10) and a control circuit (20), wherein the main circuit (10) comprises a thermal protector (1). The thermal protector (1) is used for thermal protection of a motor to be controlled. The control circuit (20) is arranged in parallel with the main circuit (10), and is configured to control the thermal protector (1) in the main circuit (10) to be turned off and not to be reset when the cumulative number of times the main circuit (10) is turned off due to the thermal protection of the motor to be controlled reaches a set number of times. The scheme of the invention can solve the problem that the motor protection mode in which the thermal protectoris automatically turned off or turned on according to the motor temperature has large safety hidden danger, so as to achieve the effect of improving the safety.

Description

technical field [0001] The invention belongs to the technical field of motor protection, specifically relates to a thermal protection device, a motor and a thermal protection method thereof, in particular to a self-protecting motor protection system, a motor with the system, and a self-protection method of the motor. Background technique [0002] Motor systems require protective devices for operational safety. At present, most of the electrical protection of low-power motors use two protection methods: resettable thermal protector and non-resettable thermal fuse. The thermal fuse is a one-time protection device. When it is working, if the temperature of the motor equipment is abnormal, it will automatically work and cut off the circuit. The performance is reliable, but it will cause the motor equipment to no longer work, resulting in waste. Therefore, thermal links are often inferior to resettable thermal protectors in terms of efficiency. When the motor is running, the th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/085
CPCH02H7/0856
Inventor 武星李俊伟康宁漆凌君
Owner GREE ELECTRIC APPLIANCES INC
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