CN2436827Y

CN2436827Y - Gas stove

Info

Publication number: CN2436827Y
Application number: CN 00228036
Authority: CN
Inventors: 游武场; 高峰
Original assignee: YINGHUAWEICHU (HUANAN) CO Ltd
Current assignee: YINGHUAWEICHU (HUANAN) CO Ltd
Priority date: 2000-04-27
Filing date: 2000-04-27
Publication date: 2001-06-27
Anticipated expiration: 2010-04-27

Abstract

The utility model relates to a gas cooker, which comprises a furnace body, security protecting controller for automatic timing and extinguishing and a battery box. An air door, an ignition device, a gas switch, a security solenoid valve, a gas pipeline, a flame detector and a thermocouple are arranged on a combustor. The security protecting controller for the automatic timing and the extinguishing comprises a circuit loop composed of a switch circuit assembly with micro-power consumption, a delaying mono-stable trigger assembly and a time controller assembly. The ignition device is independently arranged in an electric control part, and piezoelectric or pulse electronic ignition can be processed. A manual changeover switch is also provided, and thus the utility model can be used as gas furnace has extinguishing security protection. The utility model has the advantages of high reliability and safety, exact time keeping and easy use and is suitable for occasions with long service life.

Description

A kind of gas furnace

The utility model relates to a kind of gas-cooker, is meant a kind of gas furnace with automatic time control device especially.

The gas furnace of selling on the market keeps off time the higher person flame-out protection device only is housed at present, does not generally possess regularly protective device of time-delay, also needs to trigger the activation by mechanical switch even have.

The purpose of this utility model provides a kind of gas furnace deficiency, that have the automatic time control device that remedies prior art.

A kind of gas furnace of purpose design according to this; comprise body of heater; attached to self-clocking on the furnace body support and flame-out safety protection control device; burner and on flame detector and thermocouple; battery case; be installed on the air door of burner air inlet; be fixed in igniter and burnt gas switch on the panel; security solenoid valve and switch; gas pipeline connects, and wherein self-clocking and flame-out protector comprise the little power consumption on-off circuit assembly that interconnects and form control loop; the time-delay monostable flipflop assembly of control security solenoid valve adhesive holding circuit; the automatic time controller assembly of exporting according to the status information control circuit of flame combustion.During assembling, the output of self-clocking and flame-out protector is connected with flame detector, and the time-delay monostable flipflop in it is connected with security solenoid valve, and its circuit also is connected with thermocouple.And flame detector and thermocouple are installed on the burner simultaneously, and are connected on the port of self-clocking and flame-out protector.Be provided with manual change-over switch in the circuit in self-clocking and flame-out protector.In addition, but self-clocking and flame-out safety guard and not only can realize the piezoelectric ceramics igniting but the igniter of pulsed electron igniting between isolate mutually; Self-clocking and flame-out safety guard and igniter are isolated mutually.

The multiple flame-out safety precautions that the utility model adopts thermocouple, flame detector, manual change-over switch, security solenoid valve to constitute; and not only available common piezoelectric ceramics igniting but also the igniting of available pulsed electron; security solenoid valve is opened time controller on fire at once and is adopted commercially available low-power consumption large scale integrated circuit after the flame ignition; the liquid crystal display time, touch switch.When self-clocking and the inefficacy of flame-out safety protection control device, can disconnect manual change-over switch, gas furnace just becomes Daepori gas furnace logical, that have flame-out protection device.As seen, the utility model except that having realized the accident extinguishing safeguard protection, also realized on fire after self-clocking accurately, regularly, use is safer, reliable, long occasion of time spent such as especially be fit to pot congee, Baoshang, pot medicine, heat up water.

Accompanying drawing 1 (a, b) is respectively the utility model assembling master, schematic diagram is looked on the right side;

Accompanying drawing 2 is the circuit theory schematic diagram of self-clocking and flame-out safety protection control device;

Accompanying drawing 3 is the utility model control relation, mode principle schematic.

Accompanying drawing is depicted as a utility model embodiment with two burners 3.Therefore air door 4, igniter 5, burnt gas switch 8, security solenoid valve 9, flame detector 11, thermocouple 12 all have two covers, also have body of heater 1, self-clocking and flame-out safety protection control device 2, gas pipeline 10, battery case 7.Little power consumption electronic switch A assembly, time-delay monostable flipflop B assembly, time controller C assembly are arranged in self-clocking and flame-out safety protection control device, and manual change-over switch 6.Wherein, thermocouple, flame detector all promptly are installed on the burner and are connected with flame-out protector with self-clocking again; Security solenoid valve is installed on the burnt gas switch and with self-clocking and is connected with flame-out protector; Manual change-over switch and battery case are installed on the side panel of body of heater and with self-clocking and are connected with flame-out protector; The LCDs of time controller is installed on the front panel of body of heater; Igniter is independent of self-clocking and flame-out safety protection control device.Duty of the present utility model is by the little power consumption electronic switch control in self-clocking and the flame-out protector.

Fig. 2 has provided the two covers control circuit in parallel that is used for the double burner gas furnace because the principle and the course of work are identical, so only just the circuit kit below wherein be illustrated.

As seen from Figure 2, NAND gate and the RC resistance-capacitance network be made up of MOS type FET of little power consumption electronic switch constitutes.Its operation principle is: when lighting flame, flame detector will detect and produce electric current, and this faint electric current promotes the shaping amplification negative circuit output low level that aforementioned NAND gate is formed, and starts security solenoid valve adhesive holding circuit and time controller.Security solenoid valve adhesive holding circuit is then by time-delay monostable flipflop, triode T3, T4, resistance R 10, R11, R12, compositions such as security solenoid valve 9 and thermocouple 12.When it receives the low level signal of little power consumption switch output, time-delay monostable flipflop output one low level between the temporary steady state period of time-delay makes triode T3, T4 conducting, provide adhesive to keep electric current by R12 to security solenoid valve after the T4 conducting, safety electromagnetic is opened at once.When stable state finishes temporarily, the thermoelectrical potential that thermocouple produces will replace triode T4 to provide operating current for security solenoid valve.Once accident extinguishing, the hot thermocouple electromotive force disappears, and security solenoid valve is closed outage, thereby turn-offs combustion gas, realizes safeguard protection.

For realizing regularly closing fire, adopted the recoil booster circuit.This circuit is by triode T5, resistance R 13, R14, capacitor C 6, C7, diode D6, bidirectional trigger diode D5, controllable silicon D7, security solenoid valve 9 compositions such as grade.When time controller regularly or after timing time arrives, send a low level signal, triode T5 conducting, the oscillation boosting loop starting of oscillation that T5 and oscillation transformer B1 constitute, oscillating current after boosting charges to capacitor C 6 by elements such as diode D6 and security solenoid valves, when electric capacity two terminal potentials rise to certain value, bidirectional trigger diode D5 conducting, trigger controllable silicon D7 conducting, capacitor C 6 is through coil, the controllable silicon D7 back discharge of security solenoid valve, cause the security solenoid valve outage to close valve, finish and regularly close fire.

Claims

1; a kind of gas furnace; comprise body of heater (1); attached to self-clocking on the furnace body support and flame-out safety protection control device (2); burner (3) and on flame detector (11) and thermocouple (12); battery case (7); be installed on the air door (4) of burner air inlet; be fixed in igniter (5) and burnt gas switch (8) on the panel; security solenoid valve (9) and switch; gas pipeline (10) connects, and it is characterized in that self-clocking and flame-out protector comprise little power consumption switch (A) circuit unit that interconnects and form control loop; time-delay monostable flipflop (B) assembly of control security solenoid valve adhesive holding circuit; time controller (C) assembly according to the output of the status information automatic control circuit of flame combustion.

2, gas furnace according to claim 1 is characterized in that the output of self-clocking and flame-out protector is connected with flame detector, and the time-delay monostable flipflop (B) in it is connected with security solenoid valve, and its circuit also is connected with thermocouple.

3, gas furnace according to claim 2 is characterized in that flame detector and thermocouple are installed on the burner simultaneously, and is connected on the port of self-clocking and flame-out protector.

4, gas furnace according to claim 1 and 2 is characterized in that being provided with manual change-over switch (6) in the circuit in self-clocking and the flame-out protector.

5, gas furnace according to claim 3, but it is characterized in that self-clocking and flame-out safety guard and not only can realize isolating mutually between the igniter of piezoelectric ceramics igniting but also pulsed electron igniting.

6, combustion furnace according to claim 4 is characterized in that self-clocking and flame-out safety guard and igniter isolate mutually.