CN87205894U

CN87205894U - Water heater with phatoelectric fuel-gas controller

Info

Publication number: CN87205894U
Application number: CN 87205894
Authority: CN
Inventors: 李华文
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1988-04-27

Abstract

The utility model relates to an automatically controlled fuel gas photoelectric water heater, which is a water heater adopting an ignition device whose combustible gas is controlled by a photoelectric circuit system. The inside of the combustible gas combustion chamber of the water heater is provided with a photoresistor and a pair of high-voltage pulse discharge electrodes. When the photoelectric automatically controlled water heater is used, ignition is quick and safe, and the sudden extinction of the tinder inside the water heater, the mass leakage of the combustible gas, environment pollution and other accidents can be prevented.

Description

Water heater with phatoelectric fuel-gas controller

What the present invention relates to is the water heater that a kind of electronics of being made up of electro-optical system is controlled gas fuel burning automatically.

Existing water heater control system with the gas fuel burning heating mainly contains: (1) timing system; (2) carbon monoxide warning system; (3) control system of thermocouple and magnetic valve composition; (4) temperature-sensitive bag and bellows control fine motion gas valve system; (5) control system of carbon monoxide and magnetic valve composition; (6) shutdown systems midway.These six kinds of control systems, manufacturing cost is higher, the complicated operation inconvenience, and in the water heater combustion process, kindling material extinguishes because of certain reason, and water heater closes the gas check valve time automatically above 60 seconds., as open and use taps to closing gas check valve during this period of time flame-out, kindling material nozzle and main fire-fighting are chewed and are emitted fuel gas simultaneously, 60 second time had 0.013 kilogram fuel gas and is released, not only waste a large amount of fuel gas, and easily contaminated environment, breaking out of fire or explosion accident.

Of the present inventionly provide the water heater that a kind of electronics of being made up of electro-optical system is controlled gas fuel burning automatically.Water heater with this device control can be lighted kindling material in 4 seconds in the flame-out back of kindling material, prevents that the accident of a large amount of escapes of fuel gas from taking place.

The present invention finishes as follows: open the switch in the kindling material electronic automatic control circuit, as not having kindling material in the water heater heating cabinet, photo resistance in the extinction cover is high value, oscillating circuit starting oscillation in the control circuit, at the above voltage of the secondary output 220V of first transformer, electric capacity is charged, when capacitance voltage is charged to 220V, neon bulb is breakdown, breakdown current makes the controllable silicon conducting, spark the elementary of second transformer, the secondary generation high-voltage pulse of second transformer, this phenomenon constantly produces, because transformer secondary output is connected with kindling material pipe and power generation head, just continuous discharge on these two discharge ends, the fuel gas in the kindling material pipe ignited becomes kindling material.

After kindling material was lighted, illumination was accepted in photo resistance, and resistance diminishes, the oscillating circuit failure of oscillations, first transformer and second transformer do not have high pressure output, discharge end discharge off phenomenon, as kindling material extinguish, control circuit works again, guarantees that the kindling material in the water heater combustion chamber does not extinguish.

Great advantage of the present invention is for being not more than for 4 seconds when kindling material by extinguishing to the time of rekindling, and can reduce the waste of fuel gas like this and to the pollution of environment, make the peace big raising quick to take offense of adopting the fuel gas water heater.

Below with reference to accompanying drawing invention is described in further detail:

Fig. 1 is a structural representation of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is circuit theory diagrams of the present invention.

With reference to Fig. 1, kindling material pipe (8) forms high pressure pulse discharge two utmost points with power generation head (7).Divide the kindling material air chamber (3) and overflow when fuel gas enters gas control valve (2) from air inlet pipe (1) from kindling material pipe (8).Main fire burns chamber this moment (5) occurs as no flame, photo resistance GR in the extinction cover (6) is high value, A point in kindling material electronic automatic control circuit this moment (10), current potential is higher, triode BG1 ends, triode BG2, the BG3 conducting, the 3V supply voltage is added in by capacitor C 1, resistance R 2, triode BG4, the oscillating circuit part that transformer B1 forms, oscillating circuit is started working, transformer B1 secondary end is through the above voltage of transformation output 200V, through diode D1 halfwave rectifier capacitor C 2 is charged, when capacitor C 2 voltages are charged to 200V, neon bulb N is breakdown, breakdown current is added to controllable silicon SCR control by resistance R 3 and extremely goes up, and makes the controllable silicon SCR conducting, and the voltage on the capacitor C 2 sparks at transformer B2 primary coil by controllable silicon, secondary the going up of transformer B2 produces a high-voltage pulse (reaching more than the 8000V), and this phenomenon repeats to take place.The kindling material pipe (8) interior owing to B2 level of transformer two ends and combustion chamber (5) links to each other with power generation head (7), in these discharge the two poles of the earth, form high pressure pulse discharge, the fuel gas of emitting in the kindling material pipe (8) that ignites forms kindling material, forms combustion flame by the kindling material fuel gas that main fire-fighting chews ejection that ignites then.

After kindling material is ignited, resistance reduced after photo resistance GR in the extinction cover (6) was subjected to illumination, circuit A point current potential descends, triode BG1 conducting, circuit B point current potential rises, and triode BG2, BG3 end, oscillating circuit quits work, B1 level of transformer no-output, B2 no high-voltage pulse of level of transformer emitted, and do not produce electrion on the discharge the two poles of the earth in combustion chamber (5).This moment, the entire circuit operating current only had several milliamperes.If because of certain reason kindling material extinguishes, photo resistance GR resistance increases again, and oscillating circuit is reworked, and kindling material is lighted in discharge again once more in discharge the two poles of the earth.Each kindling material was no more than for 4 seconds by extinguishing to the time of lighting.

With reference to Fig. 2, triode BG1, BG2, BG4 model are 3AX31B in the circuit.β=70, BG3 model are 3AX81B, β=70, electric capacity model C1 is 47 μ F/10V, and C2 is 0.47 μ F/160V, and resistance R 1 is that 51 Ω, R3, R4 are 200K for 1.5K, R2, triode D1 model is 1N4004, and controllable silicon SCR is 3CT1F, and variable resistor W1 is 0-22K.

Claims

1, a kind of combustion gas photoelectricity automatic control water heater, by the kindling material pipe, power generation head is formed, feature of the present utility model is that the kindling material control in the described water heater is to be finished by kindling material electronic automatic control circuit (10), extinction cover (6) is housed in the water heater combustion chamber (5), a photo resistance is housed in the extinction cover, kindling material pipe (8) and power generation head (7) are connected to transformer B in the kindling material electronic automatic control circuit (10) ₂Two end points of the inferior utmost point on, promptly extremely go up for two of high pressure pulse discharge.

2, combustion gas photoelectricity automatic control water heater as claimed in claim 1 is characterized in that described kindling material electronic automatic control circuit is by BG ₁, BG ₂, BG ₃The on-off circuit of forming, C ₁, R ₂, BG ₄, B ₁The oscillating circuit of forming and by D ₁, R ₃, C ₂, 3CT1f and B ₂Several parts of the high-voltage pulse charge-discharge circuit of forming are formed.