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Automatic control cooking fume exhauster

A range hood and integrated circuit technology, which is applied in the field of automatic control range hoods, can solve the problems that gas leakage cannot be monitored in real time, the function is single, and the working time of range hoods cannot be automatically controlled according to people's wishes.

Inactive Publication Date: 2008-04-09
刘艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most range hoods have only one function. One is that the gas leakage cannot be monitored in real time and the motor of the range hood can be started automatically; the other is that the working time of the range hood cannot be automatically controlled according to the wishes

Method used

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  • Automatic control cooking fume exhauster

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Effect test

Embodiment Construction

[0012] In Figure 1, the normally open contact of the gas leakage automatic control circuit relay (K 1 -1), timing control circuit relay normally closed contact (K 2 -1) and motor switch (K 3 ) in parallel and then in series with the motor (M) and then connected to the 220V power supply (A), the light switch (K 4 ) and the lamp (L) are connected in series to a 220V power supply (A).

[0013] In Figure 2, the 220V power supply (A) passes through the transformer (T 2 ) transformer and rectifier circuit (D 2 ) rectifier and capacitor (C 4 ) is filtered to supply power to the subsequent stage circuit, and the input terminal of the gas sensor (B) passes through the variable resistor (R 13 ) is connected to the positive pole of the DC power supply, and the variable resistor (R 13 ) center tap connected to 555 integrated circuit (I 2 ) 2 feet and 6 feet, gas leakage automatic control circuit relay (K 1 ) and Zener diode (G 5 ) connected in parallel to one end of the 555 integ...

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Abstract

The invention relates to an auto-control ventilator which belongs to the field of household appliances and is characterized in that a normally open contact of a fuel gas leakage auto-control circuit relay, a normally closed contact of a timing control circuit relay is connected with an electric motor switch in parallel and then is connected with a 220 V power after being connected in series with the electric motor; an input end of a gas sensitive device is connected with the anode of a direct current supply through an adjustable resistance. A centretap of the adjustable resistance is connected with a 2 foot and a 6 foot of a 555 integrated circuit while the other end is connected with a cathode of the direct current supply. One end of the timing control circuit relay (K2) is connected with a 3 foot of the 555 integrated circuit (I1) while the other end is connected with the cathode of the power. By adopting the technical scheme, the invention has the advantages and beneficial effects that the invention can automatically start the electric motor of the ventilator to work in time when the fuel gas leaks; the ventilator can automatically control the working time according to the will of people and is safe as well as practical.

Description

Technical field [0001] The invention relates to an automatic control range hood, which belongs to the field of household appliances. Background technique [0002] At present, most range hoods have a single function. One is that the gas leakage cannot be monitored in real time and the range hood motor can be started automatically; Contents of the invention [0003] The purpose of the present invention is to provide an automatic control range hood, which can start the range hood to work in time when the gas leaks, and the range hood can automatically control the working time according to people's wishes. [0004] The purpose of the present invention is achieved like this: the circuit is made up of relay, gas sensor, 555 integrated circuit, transformer, rectifier circuit, resistance, capacitor, triode, Zener diode, motor, it is characterized in that: gas leakage automatic control circuit relay often Open contact, timing control circuit Relay normally closed contact and motor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20G05B11/01
Inventor 刘艳
Owner 刘艳
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