Multifunctional gas cooking safety monitoring device

Abstract

A multifunctional gas cooking safety monitoring device comprises an input power supply; a casing base; the surface of the casing upper cover is provided with one or more than one key, an alarm sound hole and a transparent frame plate; an electromagnetic valve; the control circuit board is provided with a radar sensor module which can sense whether a human body moves in a kitchen within safe time or not, and if not, a warning signal is sent out; the combustible gas sensor can detect whether flammable gas with a certain concentration exists in the air or not and send out a warning signal; a reset function key; a stewing time appointment function key; an indicating lamp; time can be displayed on the nixie tube; an alarm; and the main control chip can process signals sent by the radar sensor module and the combustible gas sensor and functions set by the reset function key and the stewing time reservation function key, and instructs the alarm to give an alarm and the electromagnetic valve to be closed or opened so as to cut off or recover the fuel gas.

Description

Technical Field

[0001] The utility model relates to a multifunctional gas cooking safety monitoring device. Background Art

[0002] In a busy industrial society with frequent social activities, kitchen safety precautions are not only a concern for gas leaks caused by outdated or improperly installed pipes, but the most common cause of disaster is inattention and negligence during cooking. For example, if you are halfway through cooking or frying fish and suddenly receive a phone call, the conversation could last too long and the pan could dry out or burn the food. In the worst case, this could lead to waste or the need for a new pan, while in the worst case, it could even cause a fire. Anyone who has cooked will likely have experienced this. The present invention primarily incorporates a radar sensor module. When cooking, if the radar does not detect human movement within a pre-set safety time, the control chip will immediately issue a warning and cut off the gas supply for safety reasons. Summary of the Invention

[0003] The technical problem addressed by this utility model is how to comprehensively prevent the various dangers that can occur during gas cooking, providing multiple layers of protection. The most effective approach requires an intelligent monitoring and alarm robot with both vision and smell. The so-called vision is a radar sensor module that transmits and receives high-frequency electromagnetic waves and detects the frequency difference between the transmitted and received signals to determine whether human movement exists within a certain angle range. If no human movement is detected within the system's preset cooking safety time, the system determines danger and issues a prompt alarm, effectively shutting off the gas supply. The so-called smell is a combustible gas sensor that can detect when the concentration of explosive gas in the air reaches a certain PPM. Before the human nose can detect it, it can sound an alarm and immediately close the solenoid valve to cut off the gas supply. Combining the safety detection and alarm functions of these two systems can form a comprehensive gas safety prevention and alarm system network.

[0004] As for stewing soup, boiling dumplings and steaming fish, which take a long time to cook, they can easily be overcooked, causing the water to dry out or the cooking utensils to burn, or even causing disasters. Therefore, if a stewing time reservation function can be set in advance, the time for stewing soup, boiling dumplings and steaming fish can be pre-set, and the reservation time can be displayed on the digital tube. As soon as the reservation time is about to arrive, an alarm will automatically sound one minute in advance to notify the owner to come back and handle it, and then the gas supply will be cut off. This will provide more comprehensive safety precautions for cooking work and be more convenient and practical.

[0005] In order to solve the above technical problems, the present invention proposes the following technical solutions: a multifunctional gas cooking safety monitoring device, comprising:

[0006] 1. Input power supply;

[0007] a housing base;

[0008] A housing upper cover having a plurality of ventilation holes, one or more button devices, an alarm sound hole, and a transparent frame plate around its surface;

[0009] A solenoid valve, one end of which is connected to the gas outlet pipe and the other end is connected to the gas inlet pipe of the stove. The opening and closing of the solenoid valve can control the inflow and outflow of gas;

[0010] a control circuit board, which is installed in the housing base and has one end connected to the solenoid valve via an electric wire;

[0011] The control circuit board is mainly installed with:

[0012] A radar sensor module, which transmits and receives high-frequency electromagnetic waves and detects the frequency difference between the transmitted and received signals. Within the system's preset safety buffer time, it can be used to sense whether there is human movement within a certain angle range of the cooking area. If not, it will issue a warning signal;

[0013] A combustible gas sensor that can detect the presence of a certain concentration of flammable and explosive gases such as methane and propane in the air and send out a signal;

[0014] A reset function key;

[0015] One or more stewing time presetting function keys;

[0016] one or more indicator lights;

[0017] A digital tube which can digitally display whether the device has been reset to zero or display the stewing time;

[0018] an alarm;

[0019] A main control chip is responsible for comprehensively processing the signals sent by the radar sensor module and the combustible gas sensor, executing the designated functions of the reset function key and the stewing time reservation function key, and instructing the alarm to issue a warning and the solenoid valve to close or open to cut off or restore the gas supply.

[0020] A further limitation of the above technical solution is that it is additionally equipped with a backup battery box so that the backup battery can still be used to maintain normal cooking safety monitoring during power outages.

[0021] The above technical solution is further limited in that: the alarm is a buzzer or a speaker.

[0022] The above technical solution is further limited in that: the input power uses a 220V AC power line to input the power, which is converted into a 5V DC current for use after being stepped down and rectified inside the control circuit board.

[0023] A further limitation of the above technical solution is that the input power directly uses a charging head with an adapter and a data cable to supply 5V DC power to the control circuit board.

[0024] Compared with the existing kitchen disaster prevention simple gas leak alarm technology, the utility model has the following beneficial effects:

[0025] (1) Visual safety monitoring. The present invention is equipped with a radar sensor module that can be used to determine whether there is human movement within a certain angle of the cooking area within a certain period of time. For example, when cooking, as long as the radar does not detect human movement within the system's pre-set safety buffer time (for example, two minutes), the system will immediately issue a reminder to warn the owner to return and automatically cut off the gas supply in the next minute to ensure safety.

[0026] (2) Olfactory safety monitoring: This utility model is equipped with a combustible gas sensor that can detect whether there is a certain concentration of methane, propane and other flammable and explosive gases in the air, and send out a warning signal and automatically cut off the gas supply to ensure safety.

[0027] (3) In addition to the two aforementioned safety monitoring functions, the present invention also has a practical, convenient and safe function, which is to digitize the cooking process. When the stewing time reservation function key is pressed, the reservation time will be displayed on the screen. When the scheduled time is approaching, an automatic warning will be issued to remind the owner to return, and then the gas supply will be automatically cut off in the next minute. Therefore, there is no need to worry about stewing soup, boiling dumplings and steaming fish being overcooked and causing dry pot, burnt food or disaster. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 The figure shows a multifunctional gas cooking safety monitoring device case 1 of the present invention, which is an illustration of the internal configuration of the casing base with a 220V AC power input.

[0030] Figure 2 The figure shows a schematic diagram of a multifunctional gas cooking safety monitoring device with an additional solenoid valve installed in Case 1 of the present invention.

[0031] Figure 3 The figure shows a multifunctional cooking safety monitoring device for burners according to the present invention, Example 2, which is an illustration of the internal configuration of the housing base for inputting a DC5V DC power supply.

[0032] Figure 4 The figure shows a schematic diagram of installing a backup battery box in case 3 of a multifunctional burner cooking safety monitoring device of the present invention.

[0033] Figure 5 Shown is a three-dimensional combination diagram of the casing cover and casing base of Example 1 of a multifunctional burner cooking safety monitoring device of the present invention.

[0034] Figure 6 Shown is the overall appearance of Case 1 of a multifunctional burner cooking safety monitoring device of the present invention. DETAILED DESCRIPTION

[0035] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0038] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0039] The following is a detailed description of the implementation of the present invention in conjunction with the specific drawings.

[0040] like Figure 1 The figure shows a case 1 of a multifunctional burner cooking safety monitoring device of the present invention, which is an illustration of the internal configuration of the casing base with an AC220V AC power input. Figure 2 The figure shows a schematic diagram of a multifunctional burner cooking safety monitoring device according to the present invention, in which a solenoid valve is installed in case 1.

[0041] comprehensive Figure 1 and Figure 2 As shown, the control circuit board 02 is installed inside the chassis base 01. A 220V power cord 03 is plugged into a kitchen wall outlet, while the other end of the cord 03 is plugged into a socket 05 on the control circuit board 02 via a terminal 04. The incoming 220V AC power is converted to 5V by a step-down chip 06. Rectifier 07 then converts the AC power to DC, which is then supplied to the various electronic components and chips on the control circuit board 02. The bottom of the chassis base 01 has holes 011 for hanging it from a steel nail on the wall, or it can be attached to the wall using strong double-sided tape.

[0042] The housing base 01 is provided with a plurality of female fixing studs 15 around its periphery for interlocking and fixing with the housing cover.

[0043] In our busy lives, the most easily overlooked safety issue is being distracted while cooking. For example, if you're halfway through cooking or frying fish and suddenly need to answer a phone call, you often end up talking too long, causing the pan to dry out or the food to burn. This can lead to equipment damage at best, and even disasters at worst. I believe everyone who cooks regularly will have experienced this. The present device incorporates a radar detection sensor module 08, a miniaturized 20*20mm module that ensures optimal sensor performance. By transmitting and receiving high-frequency electromagnetic waves, the sensor detects the frequency difference between the transmitted and received signals. The circular portion of the sensor's surface, representing a sensing area 081, can be used to detect the presence of moving objects within a certain range. The signal can penetrate materials such as glass and acrylic, allowing it to detect the presence of people or moving objects. This allows for constant monitoring of the surrounding cooking area, effectively preventing the hazards caused by human error during gas cooking.

[0044] The actual operation is detailed below with reference to the diagrams: When the 220V power cord is plugged into the wall outlet, indicator light 14 illuminates. When you're ready to cook, press reset button 10, and the digital tube will display 00. At this point, solenoid valve 22 opens, allowing gas to flow into the cooking stove for normal ignition. Because radar sensor module 08 constantly monitors, if the radar doesn't detect movement within a set safety time (e.g., two minutes), it indicates the cook has been away for too long, posing a danger. Therefore, upon receiving the signal from radar sensor module 08, main control chip 16 on control circuit board 02 immediately instructs buzzer 18 or speaker 13 to sound a warning, or simultaneously instructs solenoid valve 22 to shut off the gas supply after one minute for safety reasons.

[0045] Although stewing soup, boiling dumplings and steaming fish do not require on-site cooking, the stewing time is generally judged by experience, and overcooking may occur if not done carefully. Therefore, the utility model also has a reference manual with pre-set standard times for stewing soup, boiling dumplings and steaming fish, etc. The cook can refer to the manual to implement the stewing time reservation function. The steps are as follows: short press the stewing time reservation button 11, and each press will stew for 5 minutes. Pressing it twice will double the time. If the stewing time reservation button 11 is long pressed, the reservation time will continue to increase in units of minutes until it is released. The reservation time will be displayed on the digital tube 09. During this period, the gas supply will be maintained until the reservation time is approaching, and a warning notification will be automatically issued one minute in advance, and then the gas supply will be cut off one minute later. Therefore, there is no need to worry about overcooking or undercooking. It is not only practical and convenient but also avoids safety hazards. The food can be left alone after cooking and picked up at the time, achieving multiple goals at one stroke.

[0046] In addition, in order to prevent gas leaks due to aging or loose joints in the gas pipeline, the present invention is also equipped with a combustible gas sensor 12, which can detect whether there is a certain concentration of methane, propane and other flammable and explosive gases in the air. Before the human nose can detect it, it can smell the danger of gas leakage, and promptly sound an alarm and close the solenoid valve 22 to cut off the gas supply.

[0047] Because the present invention is a multifunctional monitoring device, it is an intelligent monitoring alarm robot with both visual and olfactory capabilities. It can prevent cooking disasters caused by human error (especially for elderly people with amnesia) or outdated stoves and pipes, preventing dry pots, burnt food, and even fires. Both the speaker 13 and the buzzer 18 can be used for alarms, or the buzzer alone can be used. However, if combined with a voice chip, a voice warning can also be used, which will attract the attention of those around you and achieve even greater effectiveness.

[0048] The solenoid valve 22 is separated from the housing base 01. A solenoid valve power supply socket 17 is welded to the bottom of the housing base 01. Inserting the terminal 19 of an electrical wire 51 into the solenoid valve power supply socket 17 supplies power to the solenoid valve 22. Inserting the plug 21 of the electrical wire from the solenoid valve 22 into the output socket 20 of the electrical wire 51 completes the power connection between the solenoid valve 22 and the housing base 01.

[0049] Taking a commonly used gas cylinder as an example, the installation method of the solenoid valve 22 is explained. As shown in the figure, the left side of the gas cylinder pressure reducing valve 25 is the gas output pipeline 26, and the right side of the pressure reducing valve 25 is the gas input pipeline 29. A pressure gauge 27 is installed above the gas input pipeline 29, and the right side of the gas input pipeline 29 is the gas on / off knob 28. The left side of the solenoid valve 22 is the gas outlet 23, and the right side is the gas inlet 24. A dedicated gas pressure-resistant hose 34 is used to connect the gas inlet 24 on the right side of the solenoid valve 22 and the gas output pipeline 26 on the left side of the gas cylinder pressure reducing valve 25 together. Then, the two ferrules 30 on the dedicated gas pressure-resistant hose 34 are tightened with screws 35 to prevent gas leakage.

[0050] like Figure 3 Shown is a diagram illustrating the internal configuration of the housing base for the 5V DC power input, a multifunctional gas cooking safety monitoring device, Example 2. To reduce the complexity of the control circuit board 02 and the overall weight of the product, an adapter 31 and data cable 311 can also be used to power the device, similar to charging a mobile phone. First, plug the adapter 31 into a 220V wall outlet. Then, insert the USB connector end of the data cable 311 into the adapter 31. Finally, plug the other end of the data cable 31, the micro USB connector 32, into the USB charging port 33 soldered onto the control circuit board 02. This provides 5V DC power to the control circuit board 02. This power supply method offers the advantages of being lightweight and easy to hang, and the device itself is separate from the power cord. If there's a power supply problem, simply replace the adapter 31 and data cable 311, without having to disassemble the entire device to repair the step-down chip or rectifier, which could render the entire device useless.

[0051] like Figure 4The figure shows a schematic diagram of the installation of a backup battery box in case 3 of the multifunctional gas cooking safety monitoring device of the present invention. In order to prevent power outages, a backup battery box 37 can be set on one side of the housing base 02. The positive pole 38 and the negative pole 39 of a rechargeable 3.7V cylindrical battery 371 can be connected and integrated with the power circuit of the control circuit board 02. When the power outage occurs at home, the backup battery 37 can be used for power supply automatically or manually. The indicator light 14 will flash in the following ways to represent different situations: (1) Flash once every few seconds, indicating normal power supply. (2) Constantly on, indicating power outage and battery power supply. (3) Flash quickly, indicating insufficient battery power and the battery should be replaced. (4) Flash quickly and sound an alarm, indicating that the preset stewing time is approaching, or that no one is on site for the 2-minute safety buffer time when cooking. Of course, in order to avoid the complexity of the system automatically charging the battery and to reduce the cost and price, the battery box 37 can also be designed as a battery box that can be installed with three 1.5V ordinary dry batteries, and consumers can purchase the dry batteries and install them by themselves.

[0052] like Figure 5 Shown is a three-dimensional diagram of the combined housing cover and housing base of Example 1 of a multifunctional kitchen cooking safety monitoring device according to the present invention. A power indicator light cover 40 is located in the center of the upper portion of the housing cover 42. The housing cover 42 also features numerous ventilation holes 43, side ventilation slots 44, and a lower ventilation slot 41. Furthermore, the housing cover 42 is fitted with a large rectangular transparent frame 45 directly above the radar sensor module 08. This not only prevents the radar from emitting electromagnetic waves to detect surrounding conditions but also protects the radar from damage or contamination. Furthermore, the housing cover 42 also features a small rectangular transparent frame 46 directly above the digital display 09. This allows the cook to clearly see the time displayed on the digital display 09 from outside and protects the digital display 09 from damage or contamination. Of course, the small rectangular transparent frame 46 can be omitted, allowing the digital display 09 to be directly exposed. Located below the transparent frame 46 of the digital tube 09 on the upper cover 42 are two button covers. The left one is a reset button cover 49, which is attached to the front end of the reset function key 10 on the control circuit board 02. The right one is a stew timer button cover 50, which is attached to the front end of the stew timer function key 11 on the control circuit board 02. A speaker hole 47 and a buzzer hole 48 are located near the center of the upper cover 42.

[0053] like Figure 6Shown is the overall appearance of Example 1, a multifunctional gas cooking safety monitoring device according to the present invention. The housing base 01 and housing cover 42 are screwed together for easy disassembly and repair. A solenoid valve power supply socket 17 welded to the underside of the housing base 01 is connected to the housing base 01. Inserting the terminal 19 of an electrical wire 51 into the socket 17 delivers power to the solenoid valve housing 36. Inserting the plug 21 of the electrical wire attached to the housing 36, which houses the solenoid valve 22, into the output socket 20 of the electrical wire 51 completes the power connection between the housing 36 and the control circuit board 02 within the housing base 01.

[0054] To the left of the gas cylinder pressure reducing valve 25 is the gas output line 26, and to the right of the pressure reducing valve 25 is the gas input line 29. A pressure gauge 27 is located above the gas input line 29, and to the right of the gas input line 29 is the gas on / off knob 28. The gas outlet 23 is located on the left side of the solenoid valve housing 36, and the gas inlet 24 is located on the right side of the solenoid valve housing 36. A dedicated gas hose 34 is used to connect the gas inlet 24 on the right side of the solenoid valve housing 36 to the gas output line 26 on the left side of the gas cylinder pressure reducing valve 25. The two ferrules 30 on the dedicated pressure-resistant hose 34 are then tightened with screws 35 to prevent leakage.

Claims

1. A multifunctional gas cooking safety monitoring device, characterized by: The multifunctional gas cooking safety monitoring device comprises:

1. Input power supply; a housing base; A housing upper cover having a plurality of ventilation holes, one or more button devices, an alarm sound hole, and a transparent frame plate around its surface; A solenoid valve, one end of which is connected to the gas outlet pipe and the other end is connected to the gas inlet pipe of the stove. The opening and closing of the solenoid valve can control the inflow and outflow of gas; a control circuit board, which is installed in the housing base and has one end connected to the solenoid valve via an electric wire; The control circuit board is mainly installed with: A radar sensor module, which transmits and receives high-frequency electromagnetic waves and detects the frequency difference between the transmitted and received signals. Within the system's preset safety buffer time, it can be used to sense whether there is human movement within a certain angle range of the cooking area. If not, it will issue a warning signal; a combustible gas sensor that can detect the presence of a certain concentration of methane or propane flammable and explosive gas in the air and send out a signal; A reset function key; One or more stewing time presetting function keys; one or more indicator lights; A digital tube which can digitally display whether the device has been reset to zero or display the stewing time; an alarm; A main control chip is responsible for comprehensively processing the signals sent by the radar sensor module and the combustible gas sensor, executing the designated functions of the reset function key and the stewing time reservation function key, and instructing the alarm to issue a warning and the solenoid valve to close or open to cut off or restore the gas supply.

2. The multifunctional gas cooking safety monitoring device according to claim 1, characterized in that : A backup battery box is also installed so that the backup battery can be used to maintain normal cooking safety monitoring during power outages.

3. The multifunctional gas cooking safety monitoring device according to claim 1 is characterized in that : The alarm is a buzzer or a speaker.

4. The multifunctional gas cooking safety monitoring device according to claim 1 is characterized in that The input power is a 220V AC power line, which is then converted into a 5V DC power after voltage reduction and rectification inside the control circuit board.

5. The multifunctional gas cooking safety monitoring device according to claim 1 is characterized in that : The input power directly uses a charging head with an adapter and a data cable to supply 5V DC power to the control circuit board.

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