Automatic closing gas valve structure for flameout of gas cooker
By introducing a combination of a two-position three-way manual solenoid valve and a thermostat into the gas stove, the gas path is automatically cut off by using a thermocouple to sense changes in the furnace fire temperature and then manually reset via a button. This solves the problem of the inability of the solenoid valve to be controlled autonomously in the existing technology, and improves both safety and convenience.
Patent Information
- Application Number
- CN202520012073.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-03
AI Technical Summary
In existing gas stove flameout protection structures, the solenoid valve is only used to close the gas passage after the flame is extinguished. Users cannot control it to reopen, which poses a potential safety hazard.
It adopts a combination of a two-position three-way manual solenoid valve and a thermostat with thermocouple temperature control. It automatically cuts off the gas passage by sensing changes in furnace fire temperature through thermocouples, and can be manually reset by a button to achieve autonomous control.
It automatically cuts off the gas supply after the stove flame goes out, and allows users to manually reopen the gas supply via a button, improving safety and ease of use.
Smart Images
Figure CN223649364U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas stove technology, specifically to a structure for an automatic gas valve shut-off when the gas stove is turned off. Background Technology
[0002] A gas stove flameout protection device is a safety feature that detects the flameout status of the gas stove and automatically shuts off the gas valve when the flame is accidentally extinguished to prevent gas leakage and thus avoid fire. This function is crucial for ensuring household gas safety. The principle is based on the physical properties of metal, using temperature difference sensing to control the flameout protection action. When the flame is burning, the thermocouple is heated, generating a thermoelectric potential. This potential is conducted through a wire to an electromagnetic coil, creating a magnetic field that keeps the solenoid valve closed (at this time, the gas valve is open, and the combustion passage is open). Once the flame is extinguished, the thermoelectric potential of the thermocouple drops rapidly to zero, the coil is de-energized, and the solenoid valve quickly resets under the action of a spring, closing the gas passage.
[0003] The existing gas stove flameout protection structure uses an electromagnetic valve that is controlled and reset electronically. It is only used to close the gas passage after the flame is extinguished, and the ignition function can still be used. Users cannot control the reopening of the electromagnetic valve and the gas passage, which poses certain safety hazards. Therefore, an automatic gas valve shut-off structure for gas stoves after flameout is proposed. Utility Model Content
[0004] This utility model aims to solve at least one of the technical problems existing in the prior art.
[0005] Therefore, one objective of this utility model is to propose a gas stove automatic shut-off valve structure when the gas stove is turned off, which allows personnel to independently control the reopening of the solenoid valve and gas passage.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic gas valve shut-off structure for a gas stove, applied to a stove panel. A stove tray is fixedly connected to the bottom of the stove panel. Two ignition valve assemblies are installed inside the stove tray. A two-position three-way manual solenoid valve is installed inside the stove tray, with its end penetrating the stove panel. The two ignition valve assemblies are respectively connected to the two gas outlets of the two-position three-way manual solenoid valve. A thermostat is also installed inside the stove tray, electrically connected to the two-position three-way manual solenoid valve. Two burners are fixedly connected to the stove panel. Thermocouples are installed outside the burners and electrically connected to the thermostat. A gas distribution pipe is connected to the gas outlet of each ignition valve assembly. One end of the gas distribution pipe is connected to an ejector, which is connected to the burner.
[0007] Preferably, both ignition valve assemblies penetrate the cooktop panel, and both ignition valve assemblies are fixedly connected to a knob cover at their ends.
[0008] Preferably, an air inlet pipe is fixedly connected to the bottom of the cooktop, and the air inlet pipe is connected to the air inlet end of the two-position three-way manual solenoid valve.
[0009] Preferably, an ignition needle is installed on the outside of the burner head, and the ignition needle is electrically connected to the ignition valve assembly.
[0010] Preferably, a battery box is installed inside the cooktop, and a battery compartment cover is detachably connected to the bottom of the battery box. The battery box is electrically connected to the two-position three-way manual solenoid valve, the thermostat, and the ignition valve assembly.
[0011] Preferably, the cooktop panel has two buttons inserted inside, and the two buttons are located above the two-position three-way manual solenoid valve.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] The thermocouple sensing in this invention causes the furnace flame to extinguish and the temperature to drop. The thermostat controls the two-position three-way manual solenoid valve to cut off the power supply, thereby cutting off the gas path for safety. At this time, the gas supply cannot be restored without manually pressing the two-position three-way manual solenoid valve. In addition, the stove panel is equipped with a button. Pressing the button activates the manual reset button of the two-position three-way manual solenoid valve, reconnecting the two-position three-way manual solenoid valve and the gas pipe, allowing for re-ignition. The user can independently control the reopening of the solenoid valve and the gas passage. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the automatic gas shut-off valve structure for a gas stove in this utility model.
[0015] Figure 2 This is a schematic diagram of the gas inlet pipe in the automatic shut-off gas valve structure for a gas stove according to this utility model.
[0016] Figure 3 This is a schematic diagram of the two-position three-way manual solenoid valve in the automatic shut-off gas valve structure for a gas stove in this utility model.
[0017] Figure 4 This is a schematic diagram of the gas distribution pipe in the automatic shut-off gas valve structure for a gas stove that shuts off when the flame goes out, according to this utility model.
[0018] In the diagram: 1. Cooktop panel; 2. Button; 3. Ignition needle; 4. Thermocouple; 5. Knob cover; 6. Battery compartment cover; 7. Gas inlet pipe; 8. Cooktop plate; 9. Two-position three-way manual solenoid valve; 11. Battery box; 12. Gas distribution pipe; 13. Thermostat; 14. Ejector; 15. Ignition valve assembly; 16. Burner head. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figures 1-4 This utility model provides an automatic gas valve shut-off structure for a gas stove after flameout, applied to a stove panel 1. A stove tray 8 is fixedly connected to the bottom of the stove panel 1. Two ignition valve assemblies 15 are installed inside the stove tray 8. A two-position three-way manual solenoid valve 9 is also installed inside the stove tray 8, with its end penetrating the stove panel 1. The two ignition valve assemblies 15 are respectively connected to the two gas outlets of the two-position three-way manual solenoid valve 9. A thermostat 13 is also installed inside the stove tray 8, and the thermostat 13 is connected to the two-position three-way manual solenoid valve 9. The solenoid valve 9 is electrically connected. Two burners 16 are fixedly connected to the cooktop panel 1. A thermocouple 4 is installed on the outside of the burner 16. The thermocouple 4 is electrically connected to the thermostat 13. The gas outlet of the ignition valve assembly 15 is connected to a gas distribution pipe 12. One end of the gas distribution pipe 12 is connected to an ejector 14. The ejector 14 is connected to the burner 16. An ignition needle 3 is installed on the outside of the burner 16. The ignition needle 3 is electrically connected to the ignition valve assembly 15. Two buttons 2 are inserted inside the cooktop panel 1. The two buttons 2 are located above the two-position three-way manual solenoid valve 9.
[0021] In use, the thermostat 13 and the probe of the thermocouple 4 are placed near the burner head 16. After ignition and combustion through the ignition valve assembly 15, gas distribution pipe 12, ejector 14, ignition needle 3 and burner head 16, the thermocouple 4 converts the temperature change into an electromotive force signal, which is transmitted to the thermostat 13. The thermostat 13 controls the two-position three-way manual solenoid valve 9 to remain in the normally open state. When the thermocouple 4 senses that the flame has gone out and the temperature has dropped, the thermostat 13 controls the two-position three-way manual solenoid valve 9 to cut off the power supply, thereby cutting off the gas path to achieve a safety purpose. The stove panel 1 is equipped with a button 2. Pressing the button 2 activates the manual reset button of the two-position three-way manual solenoid valve 9, reconnecting the two-position three-way manual solenoid valve 9 and the gas distribution pipe 12, allowing for re-ignition.
[0022] In order to facilitate the rotation of the ignition valve assembly 15, both ignition valve assemblies 15 penetrate the stove panel 1, and both ends of the ignition valve assemblies 15 are fixedly connected with knob covers 5.
[0023] In order to connect to the gas pipeline, the bottom of the stove plate 8 is fixedly connected to the gas inlet pipe 7, which is connected to the gas inlet end of the two-position three-way manual solenoid valve 9.
[0024] The stove panel 8 has a battery box 11 installed inside. The bottom of the battery box 11 is detachably connected to a battery compartment cover 6. The battery box 11 is electrically connected to a two-position three-way manual solenoid valve 9, a thermostat 13, and an ignition valve assembly 15.
[0025] Based on the above technical solution, the working steps of this solution are summarized as follows: When this utility model is in use, the probes of the thermostat 13 and thermocouple 4 are placed near the burner head 16. After ignition and combustion through the ignition valve assembly 15, gas distribution pipe 12, ejector 14, ignition needle 3 and burner head 16, the thermocouple 4 converts the temperature change into an electromotive force signal, which is transmitted to the thermostat 13. The thermostat 13 controls the two-position three-way manual solenoid valve 9 to remain in the normally open state. When the thermocouple 4 senses that the flame has gone out and the temperature has dropped, the thermostat 13 controls the two-position three-way manual solenoid valve 9 to cut off the power supply, thereby cutting off the gas path to achieve the safety purpose. The stove panel 1 is equipped with a button 2. Pressing the button 2 activates the manual reset button of the two-position three-way manual solenoid valve 9, reconnecting the two-position three-way manual solenoid valve 9 and the gas distribution pipe 12, allowing for re-ignition.
[0026] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A gas stove automatic shut-off valve structure for gas stove flameout, applied to the stove panel (1), characterized in that: A cooktop plate (8) is fixedly connected to the bottom of the cooktop panel (1). Two ignition valve assemblies (15) are installed inside the cooktop plate (8). A two-position three-way manual solenoid valve (9) is installed inside the cooktop plate (8). The end of the two-position three-way manual solenoid valve (9) passes through the cooktop panel (1). The two ignition valve assemblies (15) are respectively connected to the two gas outlets of the two-position three-way manual solenoid valve (9). A thermostat (13) is also installed inside the cooktop plate (8). The thermostat (13) is electrically connected to the two-position three-way manual solenoid valve (9). Two burners (16) are fixedly connected to the stove panel (1). A thermocouple (4) is installed on the outside of the burner (16). The thermocouple (4) is electrically connected to the thermostat (13). The gas outlet of the ignition valve assembly (15) is connected to a gas distribution pipe (12). One end of the gas distribution pipe (12) is connected to an ejector (14). The ejector (14) is connected to the burner (16).
2. The gas stove automatic shut-off valve structure according to claim 1, characterized in that: Both ignition valve assemblies (15) penetrate the cooktop panel (1), and both ends of the two ignition valve assemblies (15) are fixedly connected with knob covers (5).
3. The gas stove automatic shut-off valve structure according to claim 1, characterized in that: The bottom of the cooktop (8) is fixedly connected to an air inlet pipe (7), which is connected to the air inlet end of the two-position three-way manual solenoid valve (9).
4. The gas stove automatic shut-off valve structure according to claim 1, characterized in that: An ignition needle (3) is installed on the outside of the burner head (16), and the ignition needle (3) is electrically connected to the ignition valve assembly (15).
5. The gas stove automatic shut-off valve structure according to claim 4, characterized in that: The stove plate (8) has a battery box (11) installed inside. The bottom of the battery box (11) is detachably connected to a battery compartment cover (6). The battery box (11) is electrically connected to the two-position three-way manual solenoid valve (9), the thermostat (13) and the ignition valve assembly (15).
6. The gas stove automatic shut-off valve structure according to claim 4, characterized in that: The stove panel (1) has two buttons (2) inserted inside, and the two buttons (2) are located above the two-position three-way manual solenoid valve (9).