CN102563721A - Gas cooker with automatic fire control - Google Patents

Abstract

The invention relates to a gas cooker with automatic fire control, comprising a cooker shell, a burner installed on the cooker shell, a temperature sensor, a thermocouple, a valve core assembly, a knob, an air intake pipe and a detection end, the temperature sensor, the thermocouple They are respectively connected to the detection ends, and are characterized in that a control circuit and a solenoid valve of a spool assembly are arranged in the cooker shell, the control circuit includes an MCU control module and a control part, and the input terminal of the MCU control module is connected to a detection The output end of the MCU control module is connected to the control part, and the output end of the control part is connected to the pin of the solenoid valve, and the solenoid valve is connected to the gas delivery pipe of the valve core assembly. The output end of the solenoid valve is connected to the wire pin of the solenoid valve, and the solenoid valve is connected to the gas delivery pipe of the valve core assembly. The beneficial effect is that: through the control circuit, it is possible to judge whether there is cooking utensils on the burner and to detect the ignition condition, and then to control the gas volume of the burner, so as to adjust the fire power of the outer and inner rings of the burner.

Description

Gas cooker with automatic fire control

technical field

The invention relates to the technical field of cookers, in particular to a gas cooker with automatic fire control.

Background technique

When people are steaming vegetables or boiling water, they sometimes forget to put the container on the gas hood because of other things. If it burns out, in severe cases, there may even be a fire; for the control of gas firepower, a lot of control technologies have been disclosed in advance, please refer to the reference document for details. Comparative document 1, the Chinese patent document with the patent number of 88221518.3 discloses "an automatic energy-saving valve for a gas stove", which solves the problem that when the gas stove is temporarily used during connection and use, the flame size does not change without adjusting the on-off valve. It is troublesome to waste energy to adjust the switch valve; the main technical characteristics of the gas stove automatic energy-saving valve are: when heating, the cooker must be placed on the gas stove, and the weight of the cooker makes the energy-saving valve open through leverage. To remove the cooking utensils, without the weight of the cooking utensils, the energy-saving valve is opened under the action of the spring. Therefore, the automatic energy-saving valve of the gas stove can automatically adjust the gas supply volume to save energy when the gas stove is temporarily not in use during continuous use; Compared with the gas stove energy-saving valve disclosed in the article, it completely adopts a mechanical adjustment and control method, which has low fire control accuracy and belongs to the early energy-saving design method; 

Comparative document 2, the Chinese patent document with the patent No. 02259965.7 discloses "a kind of automatic fire control gas stove", the size of the flame is controlled by an additional switch, and the switch is composed of a vertically installed pressure rod and a pressure rod installed on the pressure rod. The upper spring chamber and the lower valve chamber are composed; one end of the valve chamber is connected with the intake pipe, and the other end is connected with the original ignition switch of the stove; When the cooking utensil is placed on top, the upper end of the pressure rod touches the outer bottom of the cooking utensil to achieve the purpose of saving gas. The gas hood disclosed in this reference document has the function of automatic fire control, and its structure can be divided into a pot induction module and a control gas circuit module. Both modules are mechanically realized. Rod, and then the linkage device of the pressure rod drives the movement of the valve block in the gas circuit to control the gas circuit, so as to realize the control of large and small fires. However, the gas hood does not have the function of weighing. When the object to be heated is placed on the gas hood, the gas hood cannot judge how much firepower the object needs. Continue to heat. This method adds a mechanical interlocking device to the gas path, which is difficult to control and is prone to leakage, which is not conducive to industrial production.

People hope that the product can automatically control the firepower according to the state of use of the cooker.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a gas cooker with automatic fire control for judging whether there is a cooker on the burner and detecting the ignition condition, and then controlling the gas volume of the burner.

The technical solution involved in the present invention is: a gas cooker with automatic fire control, including a cooker shell, a burner installed on the cooker shell, a temperature sensor, a thermocouple, a valve core assembly, a knob, an air inlet pipe and a detection end, the The temperature sensor and the thermocouple are respectively connected to the detection end, and it is characterized in that a control circuit and a solenoid valve of a spool assembly are arranged in the cooker shell, the control circuit includes an MCU control module and a control part, and the MCU control module The input end of the MCU control module is connected to the detection end, the output end of the MCU control module is connected to the control part, and the output end of the control part is connected to the pin of the solenoid valve, and the solenoid valve is connected to the gas delivery pipe of the valve core assembly.

The control part includes a first resistor, a second resistor, a triode and an electromagnetic switch; wherein the output terminal DRIVE1 of the MCU control module is connected to one end of the second resistor and the base of the triode through the first resistor, and the collector of the triode is connected to the electromagnetic switch. One end of the switch, the emitter of the triode and the other end of the second resistor are grounded, the other end of the electromagnetic switch is electrically connected to the DC operating voltage, and the normally open contact of the electromagnetic switch is electrically connected to the pin of the electromagnetic valve.

The valve core assembly includes a valve core main body, an outer ring air pipe, an inner ring air pipe, an outer ring nozzle, an inner ring nozzle and a lead wire, wherein the outer ring air pipe and the inner ring air pipe are respectively connected to the outer ring nozzle and the inner ring nozzle, The electromagnetic valve is installed on the outer ring gas pipeline or the inner ring gas pipeline.

The detection end includes a knob detection end, a pot detection end, a temperature detection end and an ignition detection end, and the knob detection end, the pot detection end, the ignition detection end and the temperature detection end are respectively electrically connected to the input end of the MCU control module ; The temperature sensor is connected to the temperature detection terminal, and the thermocouple is connected to the ignition detection terminal.

Compared with the prior art, the present invention has the beneficial effects of: through the control circuit, it is possible to judge whether there is a cooker on the burner and to detect the ignition condition, and then to control the gas volume of the burner, thereby adjusting the outer and inner rings of the burner. firepower.

Description of drawings

Fig. 1 is a schematic diagram of the structure involved in the present invention;

Fig. 2 is the structural representation of spool assembly;

Fig. 3 is a working principle diagram of the control circuit;

FIG. 4 is a specific circuit diagram of FIG. 3 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in the figure, a gas cooker with automatic fire control includes a cooker shell 1, a burner 2 installed on the cooker shell 1, a temperature sensor 3, a thermocouple 4, a valve core assembly 5, a knob 8, an air intake pipe 6 and The detection end, the temperature sensor 3, and the thermocouple 4 are respectively connected to the detection end. The feature of the present invention is that a control circuit 7 and a solenoid valve 502 of the valve core assembly 5 are arranged in the stove shell 1. The control circuit 7 includes The MCU control module 12 and the control part 13, the input end of the MCU control module 12 is connected to the detection end, the output end of the MCU control module 12 is connected to the control part 13, and the output end of the control part 13 is connected to the pin of the solenoid valve 502, so The solenoid valve 502 is connected to the air delivery pipe of the valve core assembly 5 .

In this embodiment, the control part 13 includes a first resistor R1, a second resistor R2, a transistor Q1 and an electromagnetic switch J; wherein the output terminal DRIVE1 of the MCU control module 12 is connected to the second resistor R2 through the first resistor R1 One end of the transistor Q1 and the base of the transistor Q1, the collector of the transistor Q1 is connected to one end of the electromagnetic switch J, the emitter of the transistor Q1 and the other end of the second resistor R2 are grounded, the other end of the electromagnetic switch J is electrically connected to the DC operating voltage, and the electromagnetic switch The normally open contact of J is electrically connected to the wire pin of the solenoid valve 502 .

In this embodiment, the valve core assembly 5 includes a valve core body 506, an outer ring gas delivery pipe 501, an inner ring air delivery tube 508, an outer ring nozzle 504, an inner ring nozzle 505 and a lead wire 503, wherein the outer ring gas delivery pipe 501 and the The inner ring gas delivery pipe 508 is respectively connected to the outer ring nozzle 504 and the inner ring nozzle 505, and the solenoid valve 502 is installed on the outer ring gas delivery pipe 501 or the inner ring gas delivery pipe 508 to control the gas flow. the

In this embodiment, the detection end includes a knob detection end 9, a pot detection end 10, a temperature detection end 14 and an ignition detection end 11. The knob detection end 9, the pot detection end 10, the ignition detection end 11 and the temperature The detection terminals 14 are respectively electrically connected to the input terminals of the MCU control module 12 ; the temperature sensor 3 is connected to the temperature detection terminal 14 , and the thermocouple 4 is connected to the ignition detection terminal 11 .

When working, the use of the knob, the temperature of the pot and the ignition are detected through the control circuit. When the detected signal is input to the MCU control module 12, the MCU control module 12 implements intelligent control of the solenoid valve 502 to achieve gas volume control. , so as to adjust the outer and inner ring firepower of the burner.

Claims (4)

1. A gas cooker with automatic fire control, comprising a cooker shell (1), a burner (2) installed on the cooker shell (1), a temperature sensor (3), a thermocouple (4), and a valve core assembly (5 ), knob (8), air intake pipe (6) and detection end, the temperature sensor (3), thermocouple (4) are respectively connected with the detection end, it is characterized in that there is a The solenoid valve (502) of the control circuit (7) and the spool assembly (5), the control circuit (7) includes the MCU control module (12) and the control part (13), the input of the MCU control module (12) The terminal is connected to the detection terminal, the output terminal of the MCU control module (12) is connected to the control part (13), and the output terminal of the control part (13) is connected to the pin of the solenoid valve (502), and the solenoid valve (502) is connected to the valve core assembly (5) on the air pipe. 2. The gas cooker with automatic fire control according to claim 1, characterized in that the control part (13) includes a first resistor (R1), a second resistor (R2), a triode (Q1) and an electromagnetic switch (J ); wherein the output terminal DRIVE1 of the MCU control module (12) is connected to one end of the second resistor (R2) and the base of the transistor (Q1) through the first resistor (R1), and the collector of the transistor (Q1) is connected to the electromagnetic switch One end of (J), the emitter of the triode (Q1) and the other end of the second resistor (R2) are grounded, the other end of the electromagnetic switch (J) is electrically connected to the DC operating voltage, and the normally open contact of the electromagnetic switch (J) is electrically connected Connect to the wire pin of the solenoid valve (502). 3. The gas cooker with automatic fire control according to claim 1, characterized in that the valve core assembly (5) includes a valve core body (506), an outer ring gas delivery pipe (501), an inner ring gas delivery pipe (508) , the outer ring nozzle (504), the inner ring nozzle (505) and the lead wire (503), wherein the outer ring air pipe (501) and the inner ring air pipe (508) are respectively connected to the outer ring nozzle (504) and the inner ring nozzle (505 ), the electromagnetic valve (502) is installed on the outer ring gas pipeline (501) or on the inner ring gas pipeline (508). 4. The gas cooker with automatic fire control according to claim 1, characterized in that the detection end includes a knob detection end (9), a pot detection end (10), a temperature detection end (14) and an ignition detection end ( 11), the knob detection terminal (9), pot detection terminal (10), ignition detection terminal (11) and temperature detection terminal (14) are respectively electrically connected to the input terminal of the MCU control module (12); the temperature The sensor (3) is connected to the temperature detection terminal (14), and the thermocouple (4) is connected to the ignition detection terminal (11).

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