Portable gas stove alarm device and implementation method thereof and portable gas stove

Abstract

The present application discloses a portable gas stove alarm device and an implementation method thereof, as well as a portable gas stove, wherein the device includes a temperature sensing device, a control circuit, and an alarm circuit; the temperature sensing device is arranged in a first area, and the first area is an area that is still lower than a preset temperature after receiving the total heat radiation from the combustion of the gas stove flame; the temperature sensing device is used to generate a start signal when the temperature of the first area is heated to a temperature greater than a preset temperature due to an additional heat source; the control circuit is used to generate a control signal according to the start signal; the alarm circuit is used to generate a warning signal according to the control signal and warn the user. This method can reduce safety risks and improve the safety of the gas stove. The present application can be widely used in the field of portable gas stove technology.

Description

Technical Field

[0001] The present application relates to the technical field of portable gas stoves, and in particular to a portable gas stove alarm device, an alarm implementation method and a portable gas stove. Background Art

[0002] With the development of society, portable gas stoves have entered thousands of households. In some small restaurants or individual families, portable gas stoves have been widely used due to their lightness. In restaurants, in order to facilitate cleaning and stable placement, combined with the appearance design of the gas stove, restaurant employees usually stack portable gas stoves one by one. Due to the special stacking method of the staggered gas stoves, the flame position of the previous portable gas stove will be directly below the gas bottle of the next gas stove, and the restaurant staff may forget to completely cut off the flame of the previous portable gas stove in actual operation, which may easily cause the flame of the previous portable gas stove to heat the next gas stove during the placement process, and ultimately cause the portable gas stove to have certain safety risks. In addition, some individual users will directly set the heating plate of the induction cooker on the dining table during decoration. In some family dinner scenes, when the owner uses the portable gas stove on the dining table, it is easy to cause the induction cooker to start by mistake, causing the gas bottle of the portable gas stove on the heating plate of the induction cooker to heat up quickly, which leads to safety risks. Therefore, there are still technical problems that need to be solved in the relevant technology. Summary of the invention

[0003] The purpose of this application is to solve one of the technical problems existing in the prior art to at least a certain extent.

[0004] To this end, an object of an embodiment of the present application is to provide a portable gas stove alarm device, an alarm implementation method and a portable gas stove, which can reduce safety risks and improve the safety of the gas stove.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the embodiment of the present application includes: a portable gas stove alarm device, including: a temperature sensing device, a control circuit and an alarm circuit;

[0006] The temperature sensing device is arranged in the first area, which is an area whose temperature is still lower than the preset temperature after being subjected to the total heat radiation of the flame of the gas furnace; the temperature sensing device is used to generate a start signal when the temperature of the first area is heated to a temperature higher than the preset temperature due to the additional heat source;

[0007] The control circuit is used to generate a control signal according to the start signal;

[0008] The alarm circuit is used to generate an alarm signal and warn the user according to the control signal.

[0009] In addition, a portable gas stove alarm device according to the above embodiment of the present invention may also have the following additional technical features:

[0010] Furthermore, in the embodiment of the present application, the control circuit includes a signal acquisition module and a control chip; the signal acquisition module is connected to the control chip; the signal acquisition module is connected to the temperature sensing device;

[0011] The signal acquisition module includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, a first diode, a first resistor and a boost chip;

[0012] One end of the temperature sensing device, one end of the second capacitor, one end of the third capacitor and one end of the first inductor are connected; the other end of the temperature sensing device is connected to a first power supply; one end of the first inductor serves as a first output end and outputs a first voltage;

[0013] The anode of the first diode and the other end of the first inductor are connected to the input end of the boost chip; the cathode of the first diode, one end of the fourth capacitor, and one end of the first capacitor are connected to one end of the first resistor; one end of the first resistor serves as the second output end of the signal acquisition module and outputs a second voltage;

[0014] The other end of the fourth capacitor, the other end of the first capacitor, the other end of the first resistor, the grounding end of the boost chip, the other end of the second capacitor and the other end of the third capacitor are all grounded.

[0015] Furthermore, in the embodiment of the present application, the control circuit includes a signal acquisition module and a control chip; the signal acquisition module is connected to the control chip; the signal acquisition module is connected to the temperature sensing device;

[0016] The signal acquisition module includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, a first diode, a first resistor and a boost chip;

[0017] One end of the temperature sensing device, one end of the second capacitor, one end of the third capacitor and one end of the first inductor are connected; the other end of the temperature sensing device is connected to a first power supply; one end of the first inductor serves as a first output end and outputs a first voltage;

[0018] The anode of the first diode and the other end of the first inductor are connected to the input end of the boost chip; the cathode of the first diode, one end of the fourth capacitor, and one end of the first capacitor are connected to one end of the first resistor; one end of the first resistor serves as the second output end of the signal acquisition module and outputs a second voltage;

[0019] The other end of the fourth capacitor, the other end of the first capacitor, the other end of the first resistor, the grounding end of the boost chip, the other end of the second capacitor and the other end of the third capacitor are all grounded.

[0020] Further, in the embodiment of the present application, the alarm circuit includes a visual alarm module and an auditory alarm module; the visual alarm module and the auditory alarm module are connected to the control chip;

[0021] The visual warning module includes a light emitting diode and a current limiting resistor; one end of the current limiting resistor is connected to a first voltage, and the other end of the current limiting resistor is connected to the positive electrode of the light emitting diode; the negative electrode of the light emitting diode is connected to the first output end of the control chip.

[0022] Further, in the embodiment of the present application, the auditory warning module includes a buzzer, a second resistor, a third resistor and a first transistor;

[0023] One end of the second resistor and one end of the third resistor are connected to the second output end of the control chip; the other end of the third resistor and the emitter of the first transistor are both grounded; the other end of the second resistor is connected to the base of the first transistor, the collector of the first transistor is connected to one end of the buzzer, and the other end of the buzzer is connected to the first voltage.

[0024] Furthermore, in an embodiment of the present application, the first area is the area between the gas cylinder and the flame of the gas stove; the distance between the temperature sensing device arranged in the first area and the gas cylinder body is less than or equal to 2 cm.

[0025] Furthermore, the preset temperature is T, where T satisfies the relationship: T=A*e s / L, where A is the ignition temperature of the gas stove fuel, s is the response time of the temperature sensing device, L is the distance between the temperature sensing device and the gas cylinder body, and e is the natural base.

[0026] Furthermore, the control circuit further comprises a pull-up resistor, and for any output terminal of the control chip, one end of the pull-up resistor is connected to the output terminal, and the other end of the pull-up resistor is connected to the first voltage.

[0027] Furthermore, the device also includes a gas source cut-off circuit, which is used to cut off the gas source of the gas stove while the alarm circuit generates an alarm signal to shut down the portable gas stove; the gas source cut-off circuit includes a fourth resistor, a fifth resistor, a sixth resistor, a second inductor L2, a second transistor and a second diode; one end of the fourth resistor is connected to the control circuit, and the other end of the fourth resistor is connected to the base of the second transistor; one end of the fifth resistor, one end of the sixth resistor and the anode of the second diode are connected to the collector of the second transistor; the other end of the fifth resistor and the other end of the sixth resistor are connected to one end of the second inductor L2; the cathode of the second diode and the emitter of the second transistor are connected to the first voltage; the other end of the second inductor L2 is grounded.

[0028] On the other hand, the present application also provides a portable gas stove alarm implementation method, which is implemented by any of the portable gas stove alarm devices described above, comprising:

[0029] The temperature sensing device is arranged in the first area; the first area is an area whose temperature is still lower than a preset temperature after being radiated by the maximum flame of the gas furnace;

[0030] When the temperature of the first area is heated to a temperature greater than a preset temperature due to an additional heat source, the temperature sensing device generates an opening signal;

[0031] In response to the start signal, the control circuit generates a control signal and transmits it to the alarm circuit; the alarm circuit generates a warning signal according to the control signal and warns the user.

[0032] In addition, the present application also provides a portable gas stove, comprising the portable gas stove alarm device described in any one of the above items.

[0033] The advantages and benefits of the present application will be partially given in the following description, and partially become apparent from the following description, or be understood through the practice of the present application:

[0034] The device of the present application includes a temperature sensing device, a control circuit and an alarm circuit. The present application detects the temperature change caused by the heating of the additional heat source by the temperature sensing device set in the first area. When the temperature change causes the temperature to be greater than the preset temperature, the temperature sensing device generates an open signal and sends it to the control circuit. The control circuit generates a control signal according to the open signal. The control signal can make the alarm circuit generate an alarm signal for alarm. The present application can reduce the risk of the additional heat source continuously heating the gas bottle and improve the safety of the portable gas stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1It is a module schematic diagram of a portable gas stove alarm device in a specific embodiment of the present invention;

[0036] Figure 2 A schematic diagram of the circuit structure of a portable gas stove alarm device in a specific embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the circuit structure of an alarm circuit in a specific embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the circuit structure of an auditory warning module in a specific embodiment of the present invention;

[0039] Figure 5 A schematic diagram of the distance between the temperature sensing device and the gas cylinder body in a specific embodiment of the present invention;

[0040] Figure 6 A schematic diagram of the circuit structure of a gas source cut-off circuit in a specific embodiment of the present invention;

[0041] Figure 7 The figure is a schematic diagram of the steps of a method for realizing an alarm of a portable gas stove in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below with reference to the accompanying drawings to explain the principles and processes of the portable gas stove alarm device, alarm method and portable gas stove in the embodiments of the present invention.

[0043] First, the defects in the related technology are explained:

[0044] With the development of society, portable gas stoves have entered thousands of households. In some small restaurants or individual families, portable gas stoves have been widely used due to their lightness. In restaurants, in order to facilitate cleaning and stable placement. Combined with the appearance design of the gas stove, restaurant employees usually stack portable gas stoves one by one. Due to the special stacking method of the staggered gas stoves, the flame position of the previous portable gas stove will be directly below the gas bottle of the next gas stove, and the restaurant staff may forget to completely cut off the flame of the previous portable gas stove in actual operation, which may easily cause the flame of the previous portable gas stove to heat the next gas stove during placement, and ultimately cause the portable gas stove to have certain safety risks. In addition, some individual users will directly set the heating plate of the induction cooker on the dining table during decoration. In some family dinner scenes, when the owner uses the portable gas stove on the dining table, it is easy to cause the induction cooker to start by mistake, causing the gas bottle of the portable gas stove on the heating plate of the induction cooker to heat up quickly, which in turn leads to safety risks. Therefore, there are still technical problems that need to be solved in the relevant technology.

[0045] Reference Figure 1 ,exist Figure 1 In the present application, a portable gas stove alarm device is provided. The device may include a temperature sensing device 1, a control circuit 2 and an alarm circuit 3. The temperature sensing device 1 may be connected to the control circuit 2, and the control circuit 2 may be connected to the alarm circuit 3. The temperature sensing device 1 may be arranged in a first area. The temperature sensing device may be a temperature device with a negative temperature coefficient, such as an NTC sensor or a thermal switch. The first area is an area where the temperature is still lower than a preset temperature after receiving the total heat radiation from the combustion of the gas stove flame. It is understandable that the first area may be an area where the temperature rises after receiving the total heat radiation from the combustion of the gas stove flame, but the rate of its temperature rise is relatively low and is not enough to rise to the set temperature under the action of the heat radiation from the gas stove flame. The first area may also be an area where the temperature remains unchanged after receiving the total heat radiation from the combustion of the gas stove flame. That is to say, in this area, the speed of heat dissipation and the speed of heat generation by the total heat radiation remain equal, and the temperature will not rise. The temperature sensing device 1 may be used to generate an opening signal when the temperature of the first area is heated to a temperature greater than a preset temperature due to an additional heat source. The additional heat source includes but is not limited to the heat source generated by the electromagnetic heating gas stove and the heat source generated by the additional flame. The control circuit 2 can generate a corresponding control signal according to the start signal generated by the temperature sensing device 1. According to the structure of the alarm circuit 3, the alarm signal can be a high level or a low level. The alarm circuit 3 can drive the internal buzzer or display or light emitting diode according to the control signal generated by the control circuit 2, generate a warning signal and warn the user.

[0046] Furthermore, the control circuit 2 may include a signal acquisition module and a control chip IC1. The signal acquisition module may be connected to the control chip IC1; the signal acquisition module may be connected to the temperature sensing device 1. The control chip IC1 may be connected to the alarm circuit 3. Figure 2 , the temperature sensing device is K1. The signal acquisition module may include a first capacitor C3, a second capacitor C5, a third capacitor C6, a fourth capacitor C7, a first inductor L1, a first diode D5, a first resistor R28 and a boost chip IC3. One end of the temperature sensing device K1, one end of the second capacitor C5, and one end of the third capacitor C6 can be connected to one end of the first inductor L1; the other end of the temperature sensing device 1 can be connected to the first power supply; one end of the first inductor L1 serves as the first output end and outputs the first voltage VCC; the positive electrode of the first diode D5 and the other end of the first inductor L1 can be connected to the input end of the boost chip IC3; the negative electrode of the first diode D5, one end of the fourth capacitor C7, and one end of the first capacitor C3 can be connected to one end of the first resistor R28. One end of the first resistor R28 can serve as the second output end of the signal acquisition module and output a second voltage, and the second voltage can be 3.3V. The other end of the fourth capacitor C7, the other end of the first capacitor C3, the other end of the first resistor R28, the grounding terminal of the boost chip IC3, the other end of the second capacitor C5 and the other end of the third capacitor C6 are all grounded.

[0047] Further, refer to Figure 3 , the alarm circuit 3 may include a visual alarm module and an auditory alarm module; the visual alarm module and the auditory alarm module may be connected to the control chip IC1; the visual alarm module may include a light emitting diode LED2 and a current limiting resistor R2. One end of the current limiting resistor R2 is connected to the first voltage VCC, and the other end of the current limiting resistor R2 is connected to the positive electrode of the light emitting diode LED2; the negative electrode of the light emitting diode LED2 is connected to the first output terminal of the control chip IC1.

[0048] Further, refer to Figure 4 The auditory warning module may include a buzzer BUZ1, a second resistor R5, a third resistor R6, and a first transistor Q1. One end of the second resistor R5 and one end of the third resistor R6 may be connected to the second output end of the control chip IC1; the other end of the third resistor R6 and the emitter of the first transistor Q1 are both grounded; the other end of the second resistor R5 may be connected to the base of the first transistor Q1, the collector of the first transistor Q1 may be connected to one end of the buzzer BUZ1, and the other end of the buzzer BUZ1 may be connected to the first voltage VCC.

[0049] Further, refer to Figure 5 The first area may be the area between the gas bottle and the gas stove flame. Specifically, Figure 5In the embodiment, the distance between the temperature sensing device 1 and the gas cylinder body is L, and L≤2cm.

[0050] Furthermore, the preset temperature is set to T, wherein the preset temperature T can satisfy the relationship: T=A*e s / L, where A is the ignition temperature of the gas furnace fuel, which can be obtained from the fuel parameters. s is the response time of the temperature sensing device, which can be obtained from the parameter value of the corresponding temperature device. L is the distance between the temperature sensing device and the gas cylinder body, which can be obtained by measurement. e is the natural base.

[0051] Further, refer to Figure 3 The control circuit 2 may further include a pull-up resistor R27. For any output terminal or multiple output terminals of the control chip IC1, one end of the pull-up resistor R27 may be connected to one or more output terminals of IC1, and the other end of the pull-up resistor R27 may be connected to the first voltage VCC.

[0052] Furthermore, the alarm device may also include a gas source cut-off circuit. The gas source cut-off circuit can cut off the gas source of the gas stove when the alarm circuit 3 generates an alarm signal, so as to shut down the portable gas stove. Figure 6 The gas source cut-off circuit may include a fourth resistor R17, a fifth resistor R21, a sixth resistor R22, a second inductor L2, a second triode Q4 and a second diode D1; one end of the fourth resistor R17 may be connected to the control circuit 2, and the other end of the fourth resistor R17 may be connected to the base of the second triode Q4; one end of the fifth resistor R21, one end of the sixth resistor R22 and the anode of the second diode D1 may be connected to the collector of the second triode Q4; the other end of the fifth resistor R21 and the other end of the sixth resistor R22 may be connected to one end of the second inductor L2; the cathode of the second diode D1 and the emitter of the second triode Q4 may be connected to the first voltage VCC; the other end of the second inductor L2 is grounded. The second inductor L2 may generate a magnetic field by energizing to interfere with the magnetic field of the igniter of the gas furnace to cut off the gas of the gas furnace.

[0053] In addition, refer to Figure 7 The present application also provides a portable gas stove alarm implementation method. The method can be implemented by the portable gas stove alarm device described above. The method may include but is not limited to steps S101-S103.

[0054] S101, setting a temperature sensing device in a first area; the first area is an area where the temperature is still lower than a preset temperature after being radiated by the maximum flame of the gas stove.

[0055] S102: When the temperature of the first area is heated to a temperature greater than a preset temperature due to an additional heat source, the temperature sensing device generates an on signal.

[0056] S103, in response to the start signal, the control circuit generates a control signal and transmits it to the alarm circuit; the alarm circuit generates a warning signal according to the control signal and warns the user.

[0057] Specifically, the designer can set the temperature sensing device in the first area. The first area can be an area that is still below the preset temperature after being radiated by the maximum flame of the gas stove. The preset temperature can be 65°C. When the temperature of the first area is heated to more than 65°C due to the additional heat source, the resistance of the temperature sensing device itself decreases and generates a start signal. After receiving the start signal, the control circuit works normally to generate a control signal and transmits it to the alarm circuit. The control signal can be a high-level signal. After the alarm circuit receives the high-level control signal, it can generate a sound warning signal or a visual warning signal through the internal circuit of the buzzer or LED according to the high-level control signal and warn the user.

[0058] In this embodiment, a temperature sensing device arranged in the first area detects the temperature change caused by the heating of the additional heat source. When the temperature change causes the temperature to be greater than the preset temperature, the temperature sensing device generates an opening signal and sends it to the control circuit. The control circuit generates a control signal according to the opening signal. The control signal can make the alarm circuit generate an alarm signal for alarm and can also cut off the gas source synchronously. This application can reduce the risk of the additional heat source continuously heating the gas bottle and improve the safety of the portable gas stove.

[0059] In addition, the present application also provides a portable gas stove, which may include the portable gas stove alarm device as described above.

[0060] The contents of the above-mentioned portable gas stove alarm device embodiment are all applicable to the present portable gas stove embodiment. The functions specifically implemented by the present portable gas stove embodiment are the same as those of the above-mentioned portable gas stove alarm device embodiment, and the beneficial effects achieved are also the same as those achieved by the above-mentioned portable gas stove alarm device embodiment.

[0061] In some optional embodiments, the function / operation mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the function / operation involved, the two boxes shown in succession can actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiment presented and described in the flow chart of the application is provided by way of example, for the purpose of providing a more comprehensive understanding of technology. The disclosed method is not limited to the operation and logic flow presented herein. Optional embodiments are expected, wherein the order of various operations is changed and the sub-operation described as a part of a larger operation is performed independently.

[0062] In addition, although the present application is described in the context of functional modules, it should be understood that, unless otherwise specified, one or more of the functions and / or features can be integrated into a single physical device and / or software module, or one or more functions and / or features can be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding the present application. More specifically, in view of the properties, functions, and internal relationships of the various functional modules in the device disclosed herein, the actual implementation of the module will be understood within the conventional techniques of the engineer. Therefore, those skilled in the art can implement the present application set forth in the claims without excessive experimentation using ordinary techniques. It is also understood that the specific concepts disclosed are merely illustrative and are not intended to limit the scope of the present application, which is determined by the full scope of the attached claims and their equivalents.

[0063] In the above description of this specification, the description with reference to the terms "one embodiment / example", "another embodiment / example" or "certain embodiments / examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

[0065] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the described embodiments. Technical personnel familiar with the field may make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A portable gas stove alarm device, characterized in that: include: Temperature sensing devices, control circuits and alarm circuits; The temperature sensing device is arranged in the first area, which is an area whose temperature is still lower than the preset temperature after being subjected to the total heat radiation of the flame of the gas furnace; the temperature sensing device is used to generate a start signal when the temperature of the first area is heated to a temperature higher than the preset temperature due to the additional heat source; The control circuit is used to generate a control signal according to the start signal; The alarm circuit is used to generate an alarm signal and warn the user according to the control signal; the control circuit includes a signal acquisition module and a control chip; the signal acquisition module is connected to the control chip; the signal acquisition module is connected to the temperature sensing device; The signal acquisition module includes a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, a first diode, a first resistor and a boost chip; One end of the temperature sensing device, one end of the second capacitor, one end of the third capacitor and one end of the first inductor are connected; the other end of the temperature sensing device is connected to a first power supply; one end of the first inductor serves as a first output end and outputs a first voltage; The anode of the first diode and the other end of the first inductor are connected to the input end of the boost chip; the cathode of the first diode, one end of the fourth capacitor, and one end of the first capacitor are connected to one end of the first resistor; one end of the first resistor serves as the second output end of the signal acquisition module and outputs a second voltage; The other end of the fourth capacitor, the other end of the first capacitor, the other end of the first resistor, the grounding end of the boost chip, the other end of the second capacitor and the other end of the third capacitor are all grounded; the alarm circuit includes a visual alarm module and an auditory alarm module; the visual alarm module and the auditory alarm module are connected to the control chip; The visual warning module includes a light emitting diode and a current limiting resistor; one end of the current limiting resistor is connected to a first voltage, and the other end of the current limiting resistor is connected to the positive electrode of the light emitting diode; the negative electrode of the light emitting diode is connected to the first output end of the control chip; the first area is the area between the gas bottle and the flame of the gas stove; the distance between the temperature sensing device arranged in the first area and the gas bottle body is less than or equal to 2 cm; The preset temperature is T, where T satisfies the relationship: T=A*e s / L, where A is the ignition temperature of the gas stove fuel, s is the response time of the temperature sensing device, L is the distance between the temperature sensing device and the gas cylinder body, and e is the natural base.

2. The portable gas stove alarm device according to claim 1, characterized in that: The auditory warning module includes a buzzer, a second resistor, a third resistor and a first transistor; One end of the second resistor and one end of the third resistor are connected to the second output end of the control chip; the other end of the third resistor and the collector of the first transistor are both grounded; the other end of the second resistor is connected to the base of the first transistor, the collector of the first transistor is connected to one end of the buzzer, and the other end of the buzzer is connected to the first voltage.

3. The portable gas stove alarm device according to claim 1, characterized in that: The control circuit further includes a pull-up resistor. For any output terminal of the control chip, one end of the pull-up resistor is connected to the output terminal, and the other end of the pull-up resistor is connected to the first voltage.

4. The portable gas stove alarm device according to claim 1, characterized in that: The device also includes a gas source cut-off circuit, which is used to cut off the gas source of the gas stove when the alarm circuit generates an alarm signal to shut down the portable gas stove; the gas source cut-off circuit includes a fourth resistor, a fifth resistor, a sixth resistor, a second inductor, a second transistor and a second diode; one end of the fourth resistor is connected to the control circuit, and the other end of the fourth resistor is connected to the base of the second transistor; one end of the fifth resistor, one end of the sixth resistor and the anode of the second diode are connected to the collector of the second transistor; the other end of the fifth resistor and the other end of the sixth resistor are connected to one end of the second inductor; the cathode of the second diode and the emitter of the second transistor are connected to the first voltage; the other end of the second inductor is grounded.

5. A portable gas stove alarm method, characterized in that: The portable gas stove alarm device according to any one of claims 1 to 4 is implemented, comprising: The temperature sensing device is arranged in the first area; the first area is an area whose temperature is still lower than a preset temperature after being radiated by the maximum flame of the gas furnace; When the temperature of the first area is heated to a temperature greater than a preset temperature due to an additional heat source, the temperature sensing device generates an opening signal; In response to the start signal, the control circuit generates a control signal and transmits it to the alarm circuit; the alarm circuit generates an alarm signal according to the control signal and warns the user; the first area is the area between the gas bottle and the flame of the gas stove; the distance between the temperature sensing device set in the first area and the gas bottle body is less than or equal to 2cm; the preset temperature is T, where T satisfies the relationship: T=A*e s / L, where A is the ignition temperature of the gas stove fuel, s is the response time of the temperature sensing device, L is the distance between the temperature sensing device and the gas cylinder body, and e is the natural base.

6. A portable gas stove, characterized in that: It comprises a portable gas stove alarm device as described in any one of claims 1 to 4.

Images