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Stable and safe electric heating body controller capable of comprehensively avoiding overheating protection failure

A technology for preventing overheating and electric heating elements, which is applied in the direction of electric heating devices, electrical components, etc., and can solve problems such as fire accidents and high temperature out of control

Pending Publication Date: 2019-02-15
刘少华
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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 design a device with automatic temperature control or manual control and overheating protection, electric heating wire (wire) break arc protection function, and the protection function will never fail (or never fail) no matter in normal or abnormal state. out of control) stable and safe electric heater or electric blanket controller; solve the technical problem of fire accidents caused by high temperature out of control of the existing electric blankets in abnormal faults, and completely eliminate the safety hazards and defects of the existing electric blankets in the past

Method used

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  • Stable and safe electric heating body controller capable of comprehensively avoiding overheating protection failure
  • Stable and safe electric heating body controller capable of comprehensively avoiding overheating protection failure
  • Stable and safe electric heating body controller capable of comprehensively avoiding overheating protection failure

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specific Embodiment 1

[0033] Specific embodiment of the present invention 1 ( figure 2 ) works:

[0034] Normal working principle: When the electric heating body or electric blanket is required to be put into heating work, the figure 2 After the two AC power input terminals (L, N) input the appropriate AC power, first set the gear temperature adjustment switch to the DWK to the ⑤ end (full power gear) or ⑥ end (half power gear), and then Press (or start) the normally open button CKA, so that the heating wire WR and the primary winding n1 of the current or voltage transformer 2HGQ are connected to the input AC power, and the two ends of the secondary winding n2 of the current or voltage transformer 2HGQ generate AC voltage , after being full-wave rectified by diodes 2D11 to 2D14 and filtered by capacitor 2C5, V +5 and V +6 The DC voltage is output at both ends, so that the light-emitting diode in the photocoupler 2GD is energized to emit light, and the photosensitive bidirectional thyristor in ...

specific Embodiment 2

[0041] Specific embodiment of the present invention 2 ( image 3 ) works:

[0042] Normal working principle: When the electric heating body or electric blanket is required to be put into heating work, the image 3 After the two AC power input terminals (L, N) input the appropriate AC power, first set the gear temperature adjustment switch to the DWK to the ⑤ end (full power gear) or ⑥ end (half power gear), and then Press (or start) the normally open button CKA to let the AC wire L 2 and AC wire L 3 And the heating wire WR is connected to the input AC power supply, the AC current is full-wave rectified by diodes 3D11 to 3D14, filtered by capacitor 3C5, and then in V +5 and V +6 DC voltage is output at both ends to provide DC current to the coil of electromagnetic relay Jb, so that the normally open contacts ① and ② of electromagnetic relay Jb are pulled and turned on. At the same time, the AC wire L 2 After the AC power supply voltage is stepped down by capacitor 3C3, res...

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Abstract

The invention relates to a stable and safe electric heating body controller capable of comprehensively avoiding overheating protection failure. The controller adopts the following technical scheme that: firstly, adopting a broken line detection circuit to control a lock control switch or the power supply of a lockout circuit (8) to avoid broken line flash fire; then, after current for maintaininglockout is provided for a self-locking circuit (1) through a hot pass line and a hot through line, controlling the lock control switch by the self-locking circuit (1) to turn on the broken line detection circuit and the alternating current power supply of an electric heating line; utilizing the overheating melting-through short circuit characteristics of an isolation layer between the hot pass line and the hot through line to control the self-locking circuit (1) and the lock control switch to be unlocked and disconnected so as to realize overheating protection; enabling a half-wave electrification device to be cooperated with a tap position temperature regulation switch to regulate and control the temperature of the electric heating line; and utilizing the current for maintaining lockout to control the self-locking circuit (1) and the lock control switch to be disconnected to prevent faults from being out of control, and guaranteeing that an overheating protection function never failsso as to completely eliminate false potential safety hazards and defects which are in the presence in traditional electric heating bodies or electric blankets. Obviously, the invention is the stable and safe electric heating body controller capable of comprehensively avoiding the overheating protection failure.

Description

technical field [0001] The invention belongs to the field of household appliances or electric heating control, and in particular relates to a stable and safe electric heating body controller which can fully prevent overheating protection failure under abnormal conditions, referred to as "stable electric heating body controller comprehensively preventing overheating protection failure". Since the electric blanket is a kind of flexible electric heating body, the present invention is also particularly suitable as a safety controller for the electric blanket. Background technique [0002] In cold weather, the electric blanket is the preferred heating appliance for warming the bed. It not only makes people feel warm and comfortable when sleeping, and makes it easy to fall asleep, but also its radiated infrared rays and low-frequency electromagnetic fields have certain physiotherapy and health care effects on the human body and rheumatism treatment effects; In addition, electric b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B1/02
CPCH05B1/0272
Inventor 刘少华
Owner 刘少华
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