Intelligent flame-off device for gas stove

Abstract

The utility model relates to the technical field of gas stoves, and specifically to an intelligent flame-off device for gas stoves, comprising a switch body for being installed on the gas stove and for rotatably controlling the on and off of gas, a ring-shaped card seat being detachably arranged on the outer side of the switch body, a ring-shaped auxiliary gear being arranged on the outer side of the card seat, and a circumferential limiting structure being arranged on the inner side of the card seat, so that the switch body and the card seat are clamped to each other in the circumferential direction so as to rotate together; the utility model also comprises a motor, a reduction mechanism, an output gear and a main control module, the main control module is electrically connected with a smoke sensor, a timer and a buzzer, and the main control module controls the start and stop of the motor and the start and close of the buzzer according to a smoke concentration signal fed back by the smoke sensor or a time signal fed back by the timer; compared with the prior art, the utility model can make a timely response when the stove is dry-burned or used for too long, thereby protecting the safety of the kitchen.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to an intelligent flame-off device for a gas stove. Background Art

[0002] With the improvement of quality of life and the enhancement of safety awareness, smart home products have gradually become the new favorite of consumers. Especially in kitchens where gas is frequently used, how to ensure fire safety through smart products is related to the happy life of thousands of families.

[0003] For example, a Chinese patent document with the announcement number CN201680440U discloses an automatic fire extinguishing gas stove. Provided is a safe and reliable automatic fire extinguishing gas stove that can time and automatically turn off the gas stove switch. It includes a gas stove body and a switch, and also includes a timing device, which is connected to the switch of the gas stove. Due to the adoption of the above technology, the positive effect compared with the prior art is that the function of automatically turning off the gas stove can be achieved even if people are not there when the time is set. The timing device consists of a power supply, a sounding device, a motor, a circuit switch, a timer, and a transmission wheel, which are connected in series through a circuit. The timer is used to set the time. When the set time has passed, the circuit is connected, and the motor starts to drive the transmission wheel. The motor and the transmission wheel are connected by an axis and rotate coaxially. The transmission wheel can drive the gas stove switch to turn off the gas stove. At the same time, the sounding device also starts to start and prompts with voice.

[0004] The above automatic fire extinguishing gas stove has the following aspects to be improved:

[0005] 1. The flame is automatically turned off by the timing device. The flame is turned off by the time set in advance. That is, no matter whether dry burning occurs or not, the flame will be automatically turned off after the countdown ends. The user needs to relight the gas to continue using it. It can be seen that although it plays a role in fire safety, it also brings certain inconvenience to use.

[0006] 2. The transmission wheel is directly connected to the motor shaft. Since the speed of the driving motor cannot be adjusted, the gas stove switch rotates too fast, which can easily cause the gas stove switch to be damaged; the reverse rotation of the gas stove switch can easily cause the motor shaft to reverse, which can easily damage the motor.

[0007] 3. The existing gear for controlling flameout is fixedly connected to the gas stove switch and cannot be detached, and needs to be manufactured in advance in the gas stove enterprise, which changes the original production line and increases the production cost. Summary of the invention

[0008] In view of the above technical problems in the prior art, the utility model provides an intelligent flame-off device for a gas stove.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] Provided is a gas stove intelligent flame-off device, comprising a switch body for being mounted on the gas stove and rotatably controlling the on and off of the gas, wherein a polygonal mounting groove is arranged at the bottom of the switch body, and the switch body is characterized in that: an annular clamping seat is detachably arranged at the outer side of the switch body, an annular auxiliary gear is arranged at the outer side of the clamping seat, and a circumferential limiting structure is arranged at the inner side of the clamping seat, so that the switch body and the clamping seat are clamped to each other in the circumferential direction so as to rotate together;

[0011] It also includes a motor, a reduction mechanism, an output gear and a main control module. The main control module is electrically connected to a smoke sensor, a timer and a buzzer. The main control module controls the start and stop of the motor and the start and stop of the buzzer according to the smoke concentration signal fed back by the smoke sensor or the time signal fed back by the timer.

[0012] A one-way bearing is provided at the center of the output gear. The reduction mechanism includes a bracket and a reduction gear set. The motor and the reduction gear set are installed on the bracket. The output shaft of the motor is connected to the output gear via the reduction gear set and the one-way bearing. The output gear is meshed with the auxiliary gear.

[0013] As a further optional technical solution, the bracket includes a first plate body, an intermediate plate body and a second plate body which are arranged in parallel and separated from each other and fixed to each other, the reduction gear group is rotatably installed between the first plate body and the second plate body, the motor is fixed to the first plate body and its output shaft passes through the first plate body to connect to the reduction gear group, the second plate body is rotatably provided with an output shaft connected to the reduction gear group, a one-way bearing is connected to the outside of the output shaft, and the output gear is connected to the outside of the one-way bearing.

[0014] As a further optional technical solution, the circumferential limiting structure includes a limiting groove arranged on the inner side of the holder and a limiting protrusion arranged on the outer side of the switch body, and the limiting protrusion is embedded in the limiting groove.

[0015] As a further optional technical solution, the circumferential limiting structure also includes a first limiting plane arranged on the inner side of the holder and a second limiting plane arranged on the outer side of the switch body, and the first limiting plane is in contact with the second limiting plane.

[0016] As a further optional technical solution, the auxiliary gear and the output gear are bevel gear sets.

[0017] As a further optional technical solution, the holder and the auxiliary gear are integrated with each other.

[0018] As a further optional technical solution, the main control module includes a loading box, the smoke sensor, the timer and the buzzer are integrated in the loading box, and the loading box is provided with a ventilation window.

[0019] As a further optional technical solution, the loading box is a transparent high temperature resistant box.

[0020] As a further optional technical solution, a high temperature resistant adhesive layer is provided at the bottom of the loading box.

[0021] Beneficial effects of the utility model:

[0022] Compared with the prior art, the intelligent flame-off device for a gas stove of the utility model has the following advantages:

[0023] 1. In actual use, you can choose a timer to control the fire to turn off after a preset time, or you can choose to automatically control the fire to turn off according to the surrounding smoke concentration, which is convenient to use;

[0024] 2. The motor drives the gears to rotate through the reduction mechanism, reducing the rotation speed of the auxiliary gears and the switch body to avoid gear slippage and gear damage caused by excessive rotation; through the one-way bearing, the output shaft of the motor can drive the output gear only when it rotates forward, and vice versa, the reverse rotation of the output gear will not drive the output shaft of the motor to reverse, thereby protecting the motor;

[0025] 3. The flame-off device of the gas stove can only be manufactured as an independent component from the gas stove and supplied as an accessory, which has little impact on the original manufacturing line of the gas stove manufacturer;

[0026] 4. The card holder is detachably connected to the switch body, and can be replaced to adapt to different switch bodies. The switch body can also be retained and the damaged motor and main control module can be replaced. It has strong adaptability and high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an intelligent flame-off device for a gas stove in an embodiment.

[0028] Figure 2 The figure is a schematic diagram of the structure of an intelligent flame-off device for a gas stove in an embodiment with a loading box hidden.

[0029] Figure 3 Schematic diagram of the structure of the card holder in the embodiment.

[0030] Figure 4 It is a schematic diagram of the structure of the motor, reduction mechanism and output gear in the embodiment.

[0031] Reference numerals:

[0032] Switch body 1;

[0033] Card holder 2, auxiliary gear 21, convex plate 22;

[0034] Circumferential limiting structure 3, limiting groove 31, limiting protrusion 32, first limiting plane 33, second limiting plane 34;

[0035] Motor 4;

[0036] Speed ​​reduction mechanism 5, bracket 51, first plate 52, middle plate 53, second plate 54, speed reduction gear set 55, output shaft 56;

[0037] Output gear 6, main control module 7, one-way bearing 8;

[0038] Smoke sensor 9, timer 10, buzzer 11, dry battery 12; loading box 13. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] A gas stove intelligent flame-off device according to this embodiment, such as Figures 1 to 4 As shown, it includes a switch body 1 for being installed on a gas stove and rotatably controlling the on and off of gas. A polygonal mounting groove is provided at the bottom of the switch body 1, and the mounting groove is used to be sleeved on the rotary switch shaft of the standard gas stove used. As an improvement:

[0041] An annular holder 2 is detachably provided on the outer side of the switch body 1, an annular auxiliary gear 21 is provided on the outer side of the holder 2, and a circumferential limiting structure 3 is provided on the inner side of the holder 2, so that the switch body 1 and the holder 2 are clamped to each other in the circumferential direction and rotate together.

[0042] In this embodiment, the motor 4, the speed reduction mechanism 5, the output gear 6 and the main control module 7 are also included. The main control module 7 is electrically connected to the smoke sensor 9, the timer 10 and the buzzer 11, and is also matched with a dry battery 12 to power the main control module 7, the motor 4, the smoke sensor 9, the timer 10 and the buzzer 11. The positions and shapes of these purchased electronic components are Figure 2Only a brief illustration is shown in the figure. When the switch body 1 rotates to turn on the gas, the dry battery 12 is powered on to trigger the system. Of course, a button can also be set in the main control module to start the manual operation. The smoke sensor 9 is used to monitor the surrounding smoke concentration in real time and transmit the monitored information to the data processing unit of the main control module 7. The timer 10 counts down synchronously. The main control module 7 controls the start and stop of the motor 4 and the start and close of the buzzer 11 according to the smoke concentration signal fed back by the smoke sensor 9 or the time signal fed back by the timer 10, that is, the main control module 7 receives and processes the data transmitted by the smoke sensor 9, and at the same time, counts down. If it is measured that there is an abnormal smoke concentration around the gas stove, or the time countdown ends, when any one of the conditions is met, a shutdown command will be issued to the motor 4, and the buzzer 11 will be controlled to issue a warning. The time of the timer 10 can be adjusted manually according to actual needs, and can be freely set to 1-60 minutes. When the countdown ends, the system controls the motor 4 to turn off the gas stove switch.

[0043] This embodiment only provides the hardware facilities of the fire-off device. In actual application, after the software engineer programs the main control module 7, by constructing a computer software function module, it is possible to make a timely response when the stove burns dry or is used for too long.

[0044] In this embodiment, a one-way bearing 8 is provided at the center of the output gear 6, the reduction mechanism 5 includes a bracket 51 and a reduction gear group 55, the motor 4 and the reduction gear group 55 are installed on the bracket 51, and the output shaft of the motor 4 is connected to the output gear 6 via the reduction gear group 55 and the one-way bearing 8, and the output gear 6 is meshed with the auxiliary gear 21.

[0045] Specifically, the bracket 51 includes a first plate 52, an intermediate plate 53 and a second plate 54 which are arranged in parallel and fixed to each other, a reduction gear set 55 is rotatably installed between the first plate 52 and the second plate 54, the motor 4 is fixed to the first plate 52 and its output shaft passes through the first plate 52 to connect to the reduction gear set 55, the second plate 54 is rotatably provided with an output shaft 56 connected to the reduction gear set 55, the one-way bearing 8 is connected to the outside of the output shaft 56, and the output gear 6 is connected to the outside of the one-way bearing 8. After the motor 4 is started, its output shaft drives the reduction gear set 55 to rotate, and then drives the output shaft 56 and the one-way bearing 8 to rotate, and then drives the output gear 6 to rotate, and finally drives the auxiliary gear 21 and the switch body 1 to rotate to turn off the gas.

[0046] In this embodiment, the circumferential limiting structure 3 includes a limiting groove 31 arranged on the inner side of the holder 2 and a limiting protrusion 32 arranged on the outer side of the switch body 1. The limiting protrusion 32 is embedded in the limiting groove 31. The limiting groove 31 can adopt a dovetail groove. The circumferential limiting structure 3 also includes a first limiting plane 33 arranged on the inner side of the holder 2 and a second limiting plane 34 arranged on the outer side of the switch body 1. The first limiting plane 33 fits the second limiting plane 34. Through this structure, the switch body 1 of the holder 2 can rotate together, while the upper and lower directions can be separated from each other. Furthermore, the switch body 1 and the holder 2 are arranged to be tightly pressed against each other with interference fit to avoid a loose structure.

[0047] In this embodiment, the auxiliary gear 21 and the output gear 6 are bevel gear sets with a compact structure.

[0048] In this embodiment, the holder 2 and the auxiliary gear 21 are integrated with each other and are formed by metal integrated turning and milling or casting.

[0049] In this embodiment, the main control module 7 includes a loading box 13, a dry battery 12, a smoke sensor 9, a timer 10 and a buzzer 11 are integrated in the loading box 13, and a ventilation window is provided in the loading box 13. The loading box 13 is a transparent high temperature resistant box body, and an existing PAM board can be selected. A high temperature resistant adhesive layer is provided at the bottom of the loading box 13 for bonding and fixing to the gas stove panel used.

[0050] A convex plate 22 is provided on the outer side of the card holder 2 for easy picking up by hand.

[0051] The device has been tested over 1,000 times, and the test results show that in two situations, the smart flameout can be automatically triggered, control the gas switch to turn off, and emit a buzzer, with an accuracy rate of 100%. The device can effectively prevent disasters caused by improper use of gas, and can implement intelligent intervention and warnings in dangerous situations. It is conducive to solving the problem of forgetting to turn off the gas stove; after comparative investigation and actual testing, compared with similar products on the market, it adds important functions, real-time monitoring of smoke concentration, automatic shutdown of the control switch, and matches most stove switches on the market, which greatly fills the gap in the market. By comparing the prices of products on the market, this work has a low production cost and a lower mass production price, has a large selling price advantage, and has broad market prospects.

[0052] In the description of the present invention, it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0053] Therefore, the above detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the utility model.

[0054] In the description of the present utility model, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A gas stove intelligent flame-off device, comprising a switch body (1) for being mounted on a gas stove and for rotatably controlling the on and off of gas, wherein a polygonal mounting groove is provided at the bottom of the switch body (1), and wherein: An annular clamping seat (2) is detachably provided on the outer side of the switch body (1), an annular auxiliary gear (21) is provided on the outer side of the clamping seat (2), and a circumferential limiting structure (3) is provided on the inner side of the clamping seat (2), so that the switch body (1) and the clamping seat (2) are mutually clamped in the circumferential direction and rotate together; It also includes a motor (4), a speed reduction mechanism (5), an output gear (6) and a main control module (7); the main control module (7) is electrically connected to a smoke sensor (9), a timer (10) and a buzzer (11); the main control module (7) controls the start and stop of the motor (4) and the start and stop of the buzzer (11) according to a smoke concentration signal fed back by the smoke sensor (9) or a time signal fed back by the timer (10); A one-way bearing (8) is provided at the center of the output gear (6); the speed reduction mechanism (5) comprises a bracket (51) and a speed reduction gear set (55); the motor (4) and the speed reduction gear set (55) are mounted on the bracket (51); the output shaft of the motor (4) is connected to the output gear (6) via the speed reduction gear set (55) and the one-way bearing (8); and the output gear (6) is meshed with the auxiliary gear (21).

2. The intelligent flame-off device for a gas stove according to claim 1, characterized in that: The bracket (51) comprises a first plate (52), an intermediate plate (53) and a second plate (54) which are arranged in parallel and fixed to each other. A reduction gear set (55) is rotatably mounted between the first plate (52) and the second plate (54). The motor (4) is fixed to the first plate (52) and its output shaft passes through the first plate (52) and is connected to the reduction gear set (55). The second plate (54) is rotatably provided with an output shaft (56) connected to the reduction gear set (55). A one-way bearing (8) is connected to the outside of the output shaft (56), and an output gear (6) is connected to the outside of the one-way bearing (8).

3. The intelligent flame-off device for a gas stove according to claim 1 is characterized in that: The circumferential limiting structure (3) comprises a limiting groove (31) arranged on the inner side of the clamping seat (2) and a limiting protrusion (32) arranged on the outer side of the switch body (1); the limiting protrusion (32) is embedded in the limiting groove (31).

4. The intelligent flame-off device for a gas stove according to claim 3 is characterized in that: The circumferential limiting structure (3) also includes a first limiting plane (33) arranged on the inner side of the holder (2) and a second limiting plane (34) arranged on the outer side of the switch body (1), and the first limiting plane (33) is in contact with the second limiting plane (34).

5. The intelligent flame-off device for a gas stove according to claim 1, characterized in that: The auxiliary gear (21) and the output gear (6) are bevel gear sets.

6. The intelligent flame-off device for a gas stove according to claim 1, characterized in that: The holder (2) and the auxiliary gear (21) are integrated with each other.

7. The intelligent flame-off device for a gas stove according to claim 1, characterized in that: The main control module (7) comprises a loading box (13), a smoke sensor (9), a timer (10) and a buzzer (11) are integrated in the loading box (13), and a ventilation window is provided in the loading box (13).

8. The intelligent flame-off device for a gas stove according to claim 7, characterized in that: The loading box (13) is a transparent high temperature resistant box body.

9. The intelligent flame-off device for a gas stove according to claim 7 or 8, characterized in that: The bottom of the loading box (13) is provided with a high temperature resistant adhesive layer.

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