CN2539090Y

CN2539090Y - Auto-controlled fume exhaustor

Info

Publication number: CN2539090Y
Application number: CN 02226523
Authority: CN
Inventors: 王春生
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-01
Filing date: 2002-04-01
Publication date: 2003-03-05
Anticipated expiration: 2012-04-01

Abstract

The utility model relates to an automatic smoke exhaust ventilator, comprising a smoke exhaust ventilator and a control circuit. The control circuit is composed of a sensor, a central processing unit and a drive circuit. The sensor is a sensor of temperature induced circuit which is composed of a thermal resistor and a capacitor, and also a sensor of induced circuit of infrared ray or far infrared ray. The utility model is provided with a power-ON indicating circuit, a operating warning circuit, a lighting circuit which combines a human body sensing circuit and an optical control circuit, and a time display circuit. The utility model has the advantages of intelligent control, steady performance and easy use.

Description

Automatically control smoke exhaust ventilator

The utility model relates to a kind of automatic control smoke exhaust ventilator.

On the market existing, automatic cooking fume exhauster generally adopts gas sensor, it makes the gas sensor surface that resistance variations take place by the smog size, technical scheme that signal removes to realize automatic control, wherein number of patent application: CN86206637 comes to this thereby obtain: a kind of automatic cooking fume exhauster, by air exhauster, filter and organization.It is characterized in that having the electric bridgeware of the quick induction pieces of semiconductor gas of changes in resistance with the gas concentration difference, gas-electric bridgeware is movably connected on the member of connecting with control circuit by socket, can more take a breath on demand-electric bridgeware.Has the operating point of adjustment and capacitance-resistance time-delay halt circuit with it on the control circuit of Lian Jieing, the executing agency that makes motor operations of controlled circuit.But, after this product uses a period of time,, the entire circuit paralysis can not be worked along with increasing of oil smoke stain on the Smoke Sensor surface makes the air-sensitive induction pieces lose efficacy very soon, lose the lampblack-pumped purpose of automatic control.

The purpose of this utility model is to address the above problem, and a kind of intelligent control, stable performance, automatic control smoke exhaust ventilator easy to use are provided.

For realizing above-mentioned purpose, the utility model is to control smoke exhaust ventilator automatically, is made up of smoke exhaust ventilator and control circuit, and control circuit is made of sensor, central processing unit and drive circuit.Wherein, the sensor of the temperature sense circuit that sensor is made up of thermistor and capacitor also can be infrared ray or far infrared sensor circuit; , energising cue circuit and work cue circuit, and also auxilliary being provided with of the lighting circuit of body induction circuit and light-operated circuit combination, control circuit comprises time display circuit.

Because above-mentioned structure is by temperature sensor signal, again by the central processing unit analysis and drive corresponding circuit, can because of around environmental change judge, start relative circuit and make strain.Thereby solve not enough in the past place, have intelligent control, stable performance, advantage easy to use.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is a circuit diagram of the present utility model.

Be described with reference to the accompanying drawings the course of work of the present utility model:

Circuit theory is formed: power converting circuit, current rectifying and wave filtering circuit, mu balanced circuit, music circuit, warning circuit, central processing unit circuit, circuit of motor speed regulation control based, VFD show and external drive circuit, time display circuit, human body sensing and light-operated amplification driving circuit, temperature sensing circuit, pressure start-stop circuit, vibration and reset circuit.

Operation principle is as follows: when the user connects civil power 220/110AVC, electric current is powered to transformer B by RD, become AC low-tension 12V through transformer B and carry out rectification to the rectifier bridge that 1D-4 forms, obtain 12V direct current and stable 5V direct current simultaneously by the filter circuit of pressure-stabilizing of forming by C, R2, C2, C1, L7805, C4, C5 again, lighted by the demonstration indicator lamp that D, R3 form this moment, and static standby has been located in expression.12VDC powers to Q3, Q4, Q5, Q10 transistor collector (NPN) as relay J 1, J2, J3, J10 driving voltage.5VDC uses for PC processor 20 pin, IC, IC1, C3, IC3, C16, R12, R14, R20, GR, R21, R25, R10, Q7, Q2, Q1, Q6 in addition.

PC processor outer member is formed: TZ, C6, C7 oscillating circuit, C3, R4 reset circuit.PC work back support external circuit by: 2-3 pin style translation circuit has LEDx7, IC external drive and R1x7 current limliting exclusion are formed, the PC6 pin is for R6, Q6, ZB, the warning circuit of forming, the PC7-8-9 pin supplies R7 respectively, R8, R9, Q3, Q4, Q5, J1, J2, fan speed regulation and drive circuit that J3 forms, the PC11 pin is for R5, Q10, the light automatic control circuit that J forms, the PC12 pin is for R10, the temperature sensing circuit that C8 forms, the force switch circuit that 13 pin are formed for K, the PC14 pin is for Q9, IC4-2, IC4-1, Q8, BH, GR, human body sensing and the photocontrol search circuit formed, the PC15 pin is for IC3, R11, Q7, the music circuit that ZB1 forms, PC16-17 and 18-19 pin supply R respectively, R1, Q2, Q1, LED, Rx7, external drive and time display circuit that IC1 forms.

When PC had 5VDC voltage, the anti-jamming circuit protection PC operate as normal that resets by C3, R4 form started PC by TZ, C6, C7 oscillating circuit subsequently and enters the normal procedure running status, and the time shows " 00 ", and other locates closed condition.When the PC12 pin detected R10, C8 certain temperature change value is arranged: the time began from 01 timework, the 3 music circuit work of PC15 pin output high level drive IC after 1 minute PC15 pin step-down level music stop, PC2-3 pin drive IC, LEDx7 show that different pattern carries out glittering simultaneously, twice interrupted high-low level of PC6 pin output, after Q6 gets electric driving ZB and sends twice sound, blower fan M is opened in expression, and the high level of PC7 pin output simultaneously, Q3 get electric driving J3 relay, K3 closure, blower fan M have been realized the machine that blows in automatically with low-speed running function again.When PC had electronegative potential as retrieving 14 pin, after 11 pin output high level, Q10 got electric driving relay J, the closed RX of JK, RX1 lamp were lighted.

When constantly the raise R10 of PC12 pin and C8 of temperature detects when exceeding certain value than original temperature, PC9 pin output high level, PC7 pin output low level simultaneously, Q3 closes, Q5 conducting, J1 get electricly, and blower fan has been realized the purpose of blower fan automatic speed regulation to smoke at a high speed.

The user finishes dish truce back temperature and begins to descend, and when PC12 pin, R10, C8 detected the variation of temperature value, Q3 closed Q5 and opens, and measured after the certain hour temperature and continued decline, and PC7,8,9 pin output low levels are closed blower fan M and realized automatic shutdown function.Simultaneously, time showing, style demonstration, illumination etc. are closed and are treated to open next time, have reached the work purpose of going round and beginning again.

The automatic start-stop principle of throwing light on: people's body heat that this circuit is received by BH (sensing head) is released the body infrared signal and is amplified step by step, prime amplifies to form to be had: BH, R11, C9, C10, R13, R12, Q8 etc., middle rank amplifies by C11, R15, R14, R16, R17, C13, C14, R18, IC4-1, and the back level is amplified and light-operatedly is made up of C15, R19, R20, R21, R22, R23, IC4-2, D3, R24, R25, Q9, GR etc.When human body near the time BH have current changing signal to be sent to Q8 to amplify by C9, R3 feeds back C11, the R15 conducted signal to computing amplify IC4-1+utmost point R14, R16 forms reference voltage, R17, C13, C14, R18 form negative-feedback amplify output by C15 be coupled to final stage amplify IC4-2-utmost point R21, R19 and R21, R22, R23 forms reference voltage, GR is used for discerning daytime or lock night, pass through D3 by the final stage amplification, 24 drive triode Q9 conducting, after the PC14 pin detects the Q9 current potential and changes, the PC11 pin is exported electric high level J and is got, the LK closure, RX, two lamps of RX1 are lighted, there is not level to change through Q9 after time-delay a period of time, PC11 pin output low level, JK disconnects RX, the RX1 lamp extinguishes, thereby has realized automatic control illumination purposes.

Claims

1, a kind of automatic control smoke exhaust ventilator is made up of smoke exhaust ventilator and control circuit, and it is characterized in that: control circuit is made up of sensor, central processing unit and drive circuit.

2, a kind of automatic control smoke exhaust ventilator according to claim 1, it is characterized in that: sensor is the temperature sense circuit.

3, a kind of automatic control smoke exhaust ventilator according to claim 1 is characterized in that: sensor can also be that infrared ray or red line far away are responded to circuit outward.

4, a kind of automatic control smoke exhaust ventilator according to claim 2, it is characterized in that: the temperature sense circuit is made up of thermistor and capacitor.

5, a kind of automatic control smoke exhaust ventilator according to claim 1, it is characterized in that: control circuit also comprises time display circuit.

6, a kind of automatic control smoke exhaust ventilator according to claim 1, it is characterized in that: control circuit also is provided with the illumination automatic control circuit.

7, a kind of automatic control smoke exhaust ventilator according to claim 6 is characterized in that: lighting circuit is that body induction circuit and light-operated circuit are in conjunction with composition.

8, a kind of automatic control smoke exhaust ventilator according to claim 1, it is characterized in that: control circuit also is provided with the energising cue circuit.

9, a kind of automatic control smoke exhaust ventilator according to claim 1, it is characterized in that: control circuit is provided with the work cue circuit.