CN201259328Y

CN201259328Y - Water heater control device

Info

Publication number: CN201259328Y
Application number: CNU2008200510470U
Authority: CN
Inventors: 李秋达
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-18
Filing date: 2008-07-18
Publication date: 2009-06-17
Anticipated expiration: 2018-07-18

Abstract

The utility model discloses an improved control device of a water heater. A lighting circuit is provided with two energy storage capacitors, wherein, one capacitor is connected with a dry battery through a switch tube and a diode, and an opening actuating circuit of an electromagnetic valve is connected between the switch tube and the diode in parallel; the other energy storage capacitor forms a lighting loop with the switch tube and a transformer in the lighting circuit. The control device has the advantages that: 1.the electromagnetic valve in the control device adopts single coils, thus reducing the coil number and the production cost of products; 2.the valve is opened to light by high voltage of the original boosting energy storage in the circuit, and the dry battery can supply power for maintaining the valve to be opened, so the circuit structure is simplified, the cost is saved, and the safety is obviously improved by not using the commercial power; 3. the force for opening and closing the valve is large, the working travel is increased, the opening and the closing of the electromagnetic valve in large travel and large flow quantity are realized, the gas leakage phenomenon of the electromagnetic valve is avoided, and the use effect is good.

Description

A kind of controlling device for water heater

Technical field:

The utility model relates to the gas heater technical field, especially relates to the control device of water heater.

Background technology:

In the present existing controlling device for water heater, its combustion gas unicoil magnetic valve all adopts the mains-supplied of 220V, great majority need be used the action that two groups of coils are finished the valve opening solenoid valve, closed valve and keep by the gas electromagnetic valve of dry cell power supply, production cost is higher, have certain potential safety hazard, and the phenomenon that leaks air easily in actual use.

For addressing the above problem, Granted publication number proposes to install additional the boost technical scheme of driver module of energy storage for the utility model patent of CN 2466462Y in magnetic valve, this technical scheme adopts dry cell power supply, and reduced coil quantity, but the more complicated of energy storage boost module own, production cost of products is greatly improved, and practical popularization significance is little.

The utility model content:

The purpose of this utility model is the weak point that exists at prior art and a kind of new controlling device for water heater is provided that it has the advantages that security is good, production cost is low, can not leak gas.

For achieving the above object, the utility model includes solenoid valve control circuit, oscillation step-up circuit, firing circuit, flame detection circuit, be provided with energy storage capacitor in the firing circuit, it is characterized in that: described energy storage capacitor is two, one of them links to each other with dry cell with diode by switching tube, be parallel with the valve opening solenoid valve executive circuit that is made of electromagnetic valve coil and triode between switch triode and diode, the base stage of switching tube is controlled by resistance and another triode by IC; Switching tube in another energy storage capacitor and the firing circuit and transformer constitute ignition circuit.

Described switching tube is controllable silicon or triode.

The beneficial effects of the utility model are: the magnetic valve in (1), the control device adopts unicoil, has reduced coil quantity, has reduced production cost of products; (2), directly utilize the high pressure of original energy storage that boosts in the circuit to open valve successively and light a fire, and keep opening of valve, simplified line construction, saved cost, and owing to do not relate to civil power, security significantly improves also by dry cell power supply; (3) dynamics of open and close valve is bigger, and impulse stroke also increases, and has realized big stroke, big flow that magnetic valve opens and closes, has avoided the magnetic valve gas leak phenomenon, and result of use is very good.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is described further:

Accompanying drawing 1 is the circuit theory diagrams of the utility model embodiment one;

Accompanying drawing 2 is the circuit theory diagrams of the utility model embodiment two.

The specific embodiment:

The following stated only is preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.

See shown in the accompanying drawing 1: the utility model includes and controls solenoid valve control circuit, oscillation step-up circuit, firing circuit, the flame detection circuit that IC links to each other, be provided with energy storage capacitor in the firing circuit, wherein, energy storage capacitor is two, one of them energy storage capacitor C3 links to each other with dry cell with diode D5 by triode Q4, be parallel with the valve opening solenoid valve executive circuit that is made of electromagnetic valve coil L1 and triode Q1 between switching tube Q4 and diode D5, the base stage of triode Q1 links to each other with IC by resistance R 8; Controllable silicon E1 in another energy storage capacitor C2 and the firing circuit and transformer T2 constitute ignition circuit.

Brief description is the operation principle of embodiment one once:

(1): K switch 1 is closed, entire circuit energising, port3 and port1 input high level, Port2 input low level;

(2): port1 position resistance R 1 makes the EC utmost point conducting of Q3, power supply is through K switch 1, capacitor C 1, Q2, coil EE16, resistance R 3, triode Q3, produce hard oscillation, produce the DC voltage that is higher than cell voltage at T1 utmost point of step-up transformer, and give energy storage capacitor C2 charging through diode D1, simultaneously, give energy storage capacitor C3 charging through diode D3, port3 makes the EC utmost point conducting of triode Q1 through resistance R 8, makes cell voltage form path through the EC utmost point that diode D5 flows through magnetic valve L1, triode Q1;

(3): when the voltage of energy storage capacitor C3 during greater than charging voltage (time is controlled by IC), port2 input high level electric current is opened switching tube Q4 through resistance R 12, Q5, R10, and the electric current of capacitor C 3 forms discharge loop (duration of valve opening is controlled by IC) by the EC utmost point of switching tube Q4, coil L1, triode Q1; When the voltage of energy storage capacitor C2 during greater than charging voltage, trigger controllable silicon E1, through controllable silicon E1, transformer T2 begins sparking by the C2 discharge;

(4): the port2 input low level, switching tube Q4 ends, and turn-offs discharge loop;

(5): close valve, the Port3 input low level, triode Q1 ends, and disconnects coil L1 discharge loop, or cut-off switch K1, can close valve.

See the embodiment two shown in the accompanying drawing 2, what they were different with embodiment one is, energy storage capacitor C3 links to each other with dry cell with diode D5 by controllable silicon E2, and other is identical with embodiment one.

Brief description is the operation principle of embodiment two once:

(1): K switch 1 is closed, entire circuit energising, port3 and port1 output high level, Port2 output low level;

(2): port1 position resistance R 1 makes the EC utmost point conducting of Q3, power supply is through K switch 1, capacitor C 1, Q2, coil EE13, resistance R 3, triode Q3, produce hard oscillation, produce the DC voltage that is higher than cell voltage at T1 utmost point of step-up transformer, and give energy storage capacitor C2 charging through diode D1, simultaneously, give energy storage capacitor C3 charging through diode D3, port3 makes the EC utmost point conducting of triode Q1 through resistance R 8, makes cell voltage flow through the magnetic valve L1Q1EC utmost point through diode D5 and forms path;

(3): when the voltage of energy storage capacitor C3 during greater than charging voltage (time is controlled by IC), port2 output high level of current is through resistance R 7, triggering controllable silicon E2, and the electric current of capacitor C 3 is by the EC utmost point discharge (duration of valve opening is controlled by IC) of controllable silicon E2, coil L1, triode Q1; When the voltage of energy storage capacitor C2 during greater than charging voltage, trigger E1, through E1, T2 begins sparking by the C2 discharge;

(4): the port2 output low level, change high level into behind the port1 output low level 0.2S, turn-off controllable silicon E2 discharge loop;

(5): close valve, the Port3 output low level, the EC utmost point of shutoff triode Q1 disconnects the coil discharge loop, or cut-off switch K1, can close valve.

Claims

1. controlling device for water heater, it includes solenoid valve control circuit, oscillation step-up circuit, firing circuit, flame detection circuit, be provided with energy storage capacitor in the firing circuit, it is characterized in that: described energy storage capacitor is two, one of them links to each other with dry cell with diode by switching tube, be parallel with the valve opening solenoid valve executive circuit that is made of electromagnetic valve coil and triode between switch triode and diode, the base stage of switching tube is controlled by resistance and another triode by IC; Switching tube in another energy storage capacitor and the firing circuit and transformer constitute ignition circuit.

2. controlling device for water heater according to claim 1 is characterized in that: described switching tube is controllable silicon or triode.