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A shutdown delay cooling control circuit and cooling protection method for electric heating equipment

A delay circuit and shutdown delay technology, applied in lighting and heating equipment, heating methods, electric heating devices, etc., can solve the problems of fire and high heat, and achieve the effect of avoiding fire

Active Publication Date: 2022-04-26
SUZHOU INST OF TRADE & COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if these devices are used improperly, it will cause a fire accident. The main reason is that the internal heat is too high, especially after the shutdown, there is still a high dangerous temperature in the device, which will ignite the surrounding combustibles and cause a fire.

Method used

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  • A shutdown delay cooling control circuit and cooling protection method for electric heating equipment
  • A shutdown delay cooling control circuit and cooling protection method for electric heating equipment
  • A shutdown delay cooling control circuit and cooling protection method for electric heating equipment

Examples

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Embodiment 1

[0036] This embodiment describes in detail the shutdown delay cooling control circuit of the electric heating device of the present invention, which includes: a power supply, an electric heater RJ, a fan F, a delay circuit U2 and a delay control circuit, wherein, when the electric heating device is turned on , the power supply is connected to the electric heater and the fan to supply power for the electric heater and the fan; when the electric heating equipment is turned off, the power supply is disconnected from the electric heater, the power supply is connected to the delay circuit, and the delay circuit is connected to the delay control circuit , when the time of the delay circuit reaches the preset time, the delay control circuit controls the power supply to be disconnected from the fan.

[0037] The following will be described in conjunction with specific examples. In this embodiment, the delay control circuit includes: a first relay KA1, a second relay KA2, a first relay ...

Embodiment 2

[0042] This embodiment describes in detail the shutdown delay cooling protection method of the electric heating equipment of the present invention, which is a delay cooling protection method implemented by using the delay cooling control circuit of Embodiment 1. The startup process of the electric heating equipment is as follows figure 2 As shown, when starting up, the S1-1 of the power switch is turned on, the fan F starts to work, the first relay KA1 is in the pull-in state, and the power indicator D1 is on; at the same time, S1-2 is turned on, and the electric heater RJ starts to heat. The shutdown process of the electric heater is as follows: image 3As shown, when the machine is turned off, S1-2 is closed, and the electric heater RJ stops heating; at the same time, S1-1 is closed, the power is turned on through the KA1-2 switch, and the delay circuit U2 starts timing (here the preset time is set to 50S, In different embodiments, it can be set according to needs), when th...

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PUM

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Abstract

The invention discloses a shutdown delay cooling control circuit for electric heating equipment and a cooling protection method. The circuit includes: a power supply, an electric heater, a fan, a delay circuit and a delay control circuit. The electric heater and the fan are connected to supply power for the electric heater and the fan; when the electric heating equipment is turned off, the power supply is disconnected from the electric heater, the power supply is connected to the delay circuit, and the delay circuit is connected to the delay control circuit. When the time of the time circuit reaches the preset time, the time delay control circuit controls the power supply to be disconnected from the fan. The method includes: shutting down the electric heating equipment, stopping the electric heater, and stopping the work of the fan after delaying a preset time. The shutdown delay cooling control circuit and cooling protection method of the electric heating equipment of the present invention, after the shutdown, the fan delays working for a period of time and then cuts off the power, which can reduce the temperature in the equipment and then automatically cut off all power supplies to avoid excessive internal heat and cause a fire.

Description

technical field [0001] The invention relates to the technical field of electric heating equipment, in particular to a shutdown delay cooling control circuit and a cooling protection method for electric heating equipment. Background technique [0002] At present, there are a large amount of heating equipment on the market, and among household equipment, heaters and hair dryers have a huge amount. However, if these devices are used improperly, they will cause a fire accident. The main reason is that the internal heat is too high, especially after the shutdown, the high dangerous temperature will ignite the surrounding combustibles in the device, causing a fire. Contents of the invention [0003] In view of the problems existing in the above-mentioned prior art, the present invention proposes a shutdown delay cooling control circuit and cooling protection method for electric heating equipment. After lowering, all the working power of the equipment will be automatically cut o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B1/02F24D19/10
CPCH05B1/0202H05B1/0275F24D19/1096
Inventor 戴锐青桑一梅魏星建
Owner SUZHOU INST OF TRADE & COMMERCE