Automatic cut-off protection device for kitchen range

Abstract

The technical scheme belongs to the technical field of kitchen electric appliances, and particularly relates to an automatic cut-off protection device of a stove, which comprises a cooking bench seat and a turning cover hinged to the cooking bench seat, a heating burner is mounted on the cooking bench seat, and the turning cover turns over along a hinge axis to cover the heating burner, the automatic cut-off protection device is characterized in that the cooking bench seat is provided with a control mechanism, and the control mechanism is connected with the turning cover. The end, close to the control mechanism, of the turning cover is provided with a pressing part, and when the turning cover is closed, the pressing part is matched with the control mechanism to enable the heating furnace head to be in a closed state; when the turning cover is opened, the control mechanism can enable the heating furnace head to be in a normal working state, the turning cover drives the abutting part control mechanism, and the abutting part acts on the control mechanism to enable the control mechanism to switch the heating furnace head to be in an on-off mode, so that operation of the heating furnace head is rapidly cut off, and the heating furnace head is always in a closed state to stop heating. The potential safety hazard of the heating furnace head caused by closing the turning cover due to improper operation is avoided, so that the use safety is improved.

Description

Technical Field

[0001] The present technical solution relates to the technical field of kitchen appliances, and particularly refers to an automatic cut-off protection device for a cooking stove. Background Art

[0002] An integrated gas stove and oven is a kitchen appliance product that mainly integrates multiple functions such as a gas stove and an oven, providing a more convenient and efficient kitchen cooking experience for kitchen equipment.

[0003] For example, in Chinese Patent CN204032174U, this patent discloses a multifunctional gas-electric hybrid oven, which includes a box body. An oven is arranged at the lower part of the box body, an upper cover is hinged above the box body, a gas stove heating component is arranged below the upper cover, and the upper cover is flipped and covered on the gas stove heating component along the hinge axis.

[0004] For the above-mentioned multifunctional gas-electric hybrid oven, when the existing gas stove heating component operates, if the user directly flips the upper cover to cover the heating component after heating is completed, the flip cover presses above the combustion flame, there is a safety hazard of deflagration caused by abnormal closing of the upper cover, and the safety performance is poor and needs to be improved. Summary of the Invention

[0005] In order to improve the problem of poor safety caused by abnormal closing of the upper cover of the gas stove heating component, the present technical solution provides an automatic cut-off protection device for a cooking stove.

[0006] The purpose of the present technical solution is achieved as follows:

[0007] An automatic cut-off protection device for a cooking stove includes a stove top base and a flip cover hinged to the stove top base. A heating burner is installed on the stove top base, and the flip cover is used to cover the heating burner. The stove top base is provided with a control mechanism. One end of the flip cover close to the control mechanism has a pressing portion. When the flip cover is closed, the pressing portion cooperates with the control mechanism to make the heating burner in a closed state; when the flip cover is opened, the control mechanism can make the heating burner in a normal working state.

[0008] With the above technical solution, when the automatic cut-off protection device of the cooking stove is in normal use, the heating burner is installed on the stove base for providing cooking heat. The flip cover is hinged to the rear side of the stove base to ensure that the flip cover can freely rotate along the hinge axis to completely cover the heating burner on the stove base, so that the heating burner can play a role in dust prevention and maintenance when not in use. The control mechanism realizes the control of the on-off state of the heating burner according to the open state of the flip cover. After the flip cover is opened to a set angle, the pressing part disengages from the control of the control mechanism. At this time, the control mechanism ensures that the heating burner is in the on state and can work normally when the heating burner is turned on. When the flip cover is closed to an angle less than the set angle, the pressing part acts on the control mechanism to switch the heating burner to the off mode, so as to quickly cut off the operation of the heating burner, make the heating burner always in the off state to stop heating, and avoid potential safety hazards of the heating burner caused by improper operation of closing the flip cover, thereby improving the use safety.

[0009] Preferably, the heating burner is a gas burner, and the gas intake is controlled by an electric control valve.

[0010] The control mechanism includes at least one microswitch, and the pressing part directly or indirectly acts on the microswitch, and the microswitch directly or indirectly controls the electric control valve to close.

[0011] With the above technical solution, a gas heating burner is adopted, and the opening and closing state of the valve is changed by at least one electric control valve to control whether the gas can flow to several heating burners. The pressing part directly or indirectly acts on the microswitch. The direct action method is to use the pressing part to abut against the microswitch, and the indirect action method can be indirectly controlled by methods such as distance induction and photoelectric induction. The microswitch determines the closing of the electric control valve and commands it to stop the gas supply to achieve flameout protection.

[0012] Preferably, the control mechanism includes a plurality of microswitches that are the same as the number of heating burners.

[0013] The electric control valve includes a plurality of branch electric control valves that are respectively arranged on the branch inlet gas pipelines and are used to control the corresponding heating burners.

[0014] Each microswitch respectively controls the corresponding branch electric control valve to close.

[0015] With the above technical solution, each heating burner is supplied with gas through a branch inlet gas pipeline, and a branch electric control valve is installed on each branch inlet gas pipeline. The branch electric control valve controls the blocking or conduction of the gas in the corresponding branch inlet gas pipeline. Based on the fact that there are multiple microswitches, one microswitch corresponds to controlling one branch electric control valve, and multiple microswitches cooperate to control multiple branch electric control valves to achieve the effect of unified control of the electric control valve.

[0016] Preferably, a corresponding thermocouple is provided beside each heating burner, and multiple thermocouples are provided corresponding to multiple microswitches one by one. The corresponding microswitch controls the corresponding thermocouple to open the circuit, so as to control the corresponding branch electric control valve to close.

[0017] Through the above technical solution, when the microswitch is in the closed state, the thermocouple on the branch electric control valve is in the conducting state. At this time, the thermocouple can measure the temperature at this point. The thermocouple converts the temperature into an electrical signal and transmits it to the control device. If the control device can detect the electrical signal, it will open the corresponding branch electric control valve, and the heating burner can be normally ignited. On the contrary, after the microswitch is opened, the thermocouple on the branch electric control valve is controlled to open the circuit, and the control device cannot detect the electrical signal of the thermocouple, so the branch electric control valve closes and cannot be normally ignited, realizing the indirect control of the electric control valve by the microswitch.

[0018] Preferably, the electric control valve includes a main electric control valve provided on the main inlet gas pipeline, and the main inlet gas pipeline is connected to the corresponding heating burner.

[0019] Through the above technical solution, based on the main electric control valve being provided on the main inlet gas pipeline, by operating one microswitch, one main electric control valve can be controlled to open or close.

[0020] Preferably, the heating burner is an induction cooker, and the control mechanism includes at least one microswitch, and the microswitch can control the conduction or closing of the control circuit of the corresponding induction cooker.

[0021] Through the above technical solution, for the heating burner using an induction cooker, the conduction or closing of the control circuit of the corresponding induction cooker is controlled by at least one microswitch. When the microswitch is closed, the circuit is conducting, and when the microswitch is opened, the circuit is open, realizing the shutdown protection.

[0022] Preferably, the control mechanism further includes a guide sleeve, a thimble arranged in the guide sleeve, and an elastic member, and the thimble slides relative to the guide sleeve;

[0023] The elastic member is located between the thimble and the microswitch, and the elastic force of the elastic member makes the thimble have a tendency to slide away from the microswitch;

[0024] When the thimble is pressed down, the thimble pushes the elastic member to open the microswitch, and when the thimble disengages, the switch device is in the closed state.

[0025] Through the above technical solution, the thimble is guided and slides within the guide sleeve, and the elastic force of the elastic member acts on the thimble. The elastic force causes the thimble to have an upward sliding tendency, so that the thimble protrudes corresponding to the position of the pressing portion on the upper end face of the stove base, ensuring that the pressing portion can cooperate with the thimble, improving accuracy. During the process of closing the flip cover, the pressing portion is driven to push the thimble, causing the thimble to slide downward against the elastic force of the elastic member, and the elastic member is compressed. Based on the fact that a microswitch is provided below the thimble, after the pressure of the thimble is sufficient to press the button of the microswitch, the microswitch is turned on to achieve the disconnection and connection of the energy supply of the heating burner. Conversely, when the flip cover is opened, the elastic force of the elastic member reversely pushes the thimble to disengage from the microswitch. At this time, the microswitch returns to the normally closed state. Through the linkage of the thimble and the pressing block, the rapid response and stable operation of the switch device are ensured, improving the operation reliability and accuracy.

[0026] Preferably, the stove base is provided with a control box, the control mechanism is located within the control box, the control box is provided with a seat body, and the microswitch is arranged within the seat body.

[0027] Through the above technical solution, the control mechanism is integrated into a dedicated control box, effectively protecting the control mechanism from the erosion of kitchen environmental factors such as oil fume and water vapor, providing a stable working environment, improving the protection effect, and facilitating the maintenance and overhaul of the control mechanism. When needed, only the control box needs to be removed for relevant operations.

[0028] The number of microswitches is equal to and corresponds one-to-one with the number of heating burners. Microswitches are usually used to detect the usage status of the cooking appliance, such as whether it is ignited, whether it is in the working state, etc., and transmit these status information to the control mechanism. Each heating burner has an independently controlled microswitch. Integrating multiple microswitches within the seat body reduces the complexity of the connection lines, facilitates the separate maintenance and replacement of the corresponding microswitches, and reduces the maintenance cost.

[0029] Preferably, the guide sleeve is provided with a pressing block, and the pressing block is located at one end of the thimble along the sliding direction for abutting against the microswitch;

[0030] Or / and, when there are multiple microswitches, the seat body is provided with a collective pressing plate, and the collective pressing plate is arranged between the microswitches or the elastic members, and the collective pressing plate is used to control the multiple microswitches.

[0031] Through the above technical solution, the pressure of the downward pressing of the thimble is transmitted to the pressing block through the spring, and the elastic force of the elastic member acts on both the thimble and the pressing block at the same time. The collective pressing plate is arranged between the microswitch and the pressing block, ensuring that when subjected to the pressure of the pressing block, the collective pressing plate can evenly cover and stably apply pressure to each microswitch, thereby realizing the simultaneous triggering of multiple microswitches, and further making the coordination of multiple microswitches better.

[0032] Preferably, the collective pressing plate has positioning portions near both ends close to the seat body, and positioning grooves for the positioning portions to be embedded and limited are provided on both sides of the seat body.

[0033] Through the above technical solution, the positioning portions protrude from both ends of the collective pressing plate to contact the seat body. The shape and size of the positioning grooves match those of the positioning portions. The collective pressing plate realizes sliding guidance along the length direction of the positioning grooves through the positioning portions, improving the stability of the movement of the collective pressing plate and achieving precise guidance.

[0034] The prominent and beneficial technical effects of this technical solution compared with the prior art are:

[0035] 1. In this technical solution, a flip cover is hinged to the stove top seat. The flip cover has a pressing portion, and the control mechanism controls the on / off of the heating burner according to the opening state of the flip cover, so that when the flip cover is closed and flipped, the operation of the heating burner is cut off and the heating stops, avoiding potential safety hazards of the heating burner caused by improper operation of closing the flip cover, thereby improving the use safety;

[0036] 2. In this technical solution, a collective pressing plate is provided on the seat body. The collective pressing plate is arranged between the micro switches and the pressing block. Each micro switch can control each corresponding heating burner. When the pressing block is pressed down, it pushes the collective pressing plate to control multiple micro switches to be triggered simultaneously, making the coordination of multiple micro switches better. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is the overall structural schematic diagram of this embodiment;

[0038] Figure 2 is of this embodiment Figure 1 schematic diagram from another perspective;

[0039] Figure 3 is the overall structural schematic diagram of the control box in the embodiment;

[0040] Figure 4 is the partial exploded schematic diagram of the control box in the embodiment;

[0041] Figure 5 is the partial cross-sectional schematic diagram of this embodiment;

[0042] Figure 6 is of the embodiment Figure 5 partial enlarged schematic diagram;

[0043] Figure 7 is of this embodiment Figure 2 schematic diagram of another operating structure;

[0044] Figure 8 is the trigger principle diagram of Embodiment 1;

[0045] Figure 9Schematic diagram of the trigger for Embodiment 2;

[0046] Figure 10 Schematic diagram of the trigger for Embodiment 3.

[0047] Reference numerals: 1, stove top base; 2, flip cover; 3, heating burner; 4, control box; 5, control mechanism; 51, micro switch; 52, guide sleeve; 53, ejector pin; 54, elastic member; 6, pressing portion; 8, assembly pressing plate; 9, positioning portion; 10, positioning groove; 11, rod sleeve; 12, pressing block; 14, seat body; 15, thermocouple; 16, main electric control valve; 17, branch electric control valve; 18, main intake pipeline. Detailed implementation manners

[0048] The following further elaborates in detail on the specific implementation manners of the present technical solution in conjunction with the accompanying drawings.

[0049] Embodiment 1:

[0050] Refer to Figure 1 , an automatic cut-off protection device for a cooking appliance, including a stove top base 1 and a flip cover 2. The flip cover 2 is hinged to the rear side of the stove top base 1 and rotates along the hinge axis to approach or move away from the upper surface of the stove top base 1. A heating burner 3 is installed on the top of the stove top base 1. The heating burner 3 has a heating function and can usually be a gas burner. There are multiple heating burners 3. In this embodiment, it shows a case where there are four heating burners 3. The four heating burners 3 are arranged in a rectangular shape and spliced into two rows, and each row has two heating burners 3. When the flip cover 2 rotates, it can abut against the stove top base 1 to cover and protect the multiple heating burners 3. On the front side of the stove top base 1 away from the hinge position of the flip cover 2, there is a control panel, and the control panel is provided with control switches corresponding to the four heating burners 3 one by one. The control switches are usually used to start the heating burners 3 for cooking and can adjust the flame size.

[0051] The flip cover 2 has a pressing portion 6. The pressing portion 6 is located at one end of the flip cover 2 close to the stove top base 1 and is provided in a protruding shape. When the flip cover 2 is completely closed, the protruding direction of the pressing portion 6 faces the stove top base 1. During the rotation of the flip cover 2, the abutting portion 6 moves synchronously with the flip cover 2 and always remains in the same side position.

[0052] Refer to Figure 2 , the stove top base 1 is provided with a control box 4. The control box 4 is located on the side of the stove top base 1 away from the hinge axis of the flip cover 2 and is fixed to the lower part of the stove top base 1 by bolts.

[0053] Refer to Figure 3 and Figure 4, the cooking range base 1 is provided with a control mechanism 5. The control mechanism 5 is installed in the control box 4. The control mechanism 5 includes a microswitch 51, a guide sleeve 52, a thimble 53 and an elastic member 54. The bottom of the guide sleeve 52 bends and extends towards the inner side wall of the control box 4 for being fixed to the inner side wall of the control box 4 by bolts. The thimble 53 slides relative to the guide sleeve 52. A convex ring portion protrudes from the lower end of the thimble 53 and is embedded in the top end of the guide sleeve 52. A convex ring portion two protrudes from the inner peripheral wall of the guide sleeve 52 corresponding to the convex ring portion one. When the thimble 53 slides upwards, the lower end face of the convex ring portion two abuts against the upper end face of the convex ring portion one to limit the thimble 53 from detaching. The microswitch 51 is located below the guide sleeve 52. The guide sleeve 52 is provided with a pressure block 12 which is located between the guide sleeve 52 and the microswitch 51. The upper end of the pressure block 12 is embedded in the bottom end of the guide sleeve 52 and slides relative to the guide sleeve 52. The sliding direction is arranged along the same axis as the sliding direction of the thimble 53.

[0054] The elastic member 54 is embedded in the guide sleeve 52. The two ends of the elastic member 54 respectively abut against the thimble 53 and the pressure block 12. The elastic member 54 adopts a return spring. The elastic force of the elastic member 54 acts on the lower end face of the thimble 53 and the upper end face of the pressure block 12 at the same time. This elastic force makes the thimble 53 have a tendency to slide upwards away from the pressure block 12, and makes the elastic force also make the pressure block 12 have a tendency to press down the microswitch 51. Under normal conditions, the natural elastic force of the elastic member 54 cannot press the microswitch 51 to open.

[0055] A seat body 14 is provided in the control box 4. The seat body 14 is bolt-fixed to the control box 4. There are multiple microswitches 51. In this embodiment, the case where there are four microswitches 51 is shown. The four microswitches 51 are arranged in parallel in sequence and fixed in the seat body 14. The seat body 14 is provided with an assembly pressure plate 8. The assembly pressure plate 8 is located between the microswitch 51 and the pressure block 12. The pressure block 12 abuts against the upper end face of the assembly pressure plate 8. The assembly pressure plate 8 abuts against and covers multiple microswitches 51 so that the assembly pressure plate 8 can press the buttons of multiple microswitches 51 at the same time.

[0056] The two ends of the assembly pressure plate 8 close to the seat body 14 have positioning portions 9. Two positioning grooves 10 are opened on the opposite sides of the seat body 14 along the arrangement direction of the microswitches 51. The positions of the two positioning grooves 10 correspond to the two positioning portions 9 one by one. The shape and size of the positioning portion 9 are adapted to the positioning groove 10. The two positioning portions 9 are embedded in the corresponding two positioning grooves 10. Through the cooperation of the positioning portion 9 and the positioning groove 10, the assembly pressure plate 8 is limited to slide along the length direction of the positioning groove 10. The length direction of each positioning groove 10 is vertically perpendicular to the arrangement direction of the microswitches 51.

[0057] See Figure 6 and Figure 8, the upper end of the thimble 53 passes through the stove base 1 and protrudes from the upper end surface of the stove base 1. The microswitch 51 can be a normally closed switch, and the number of microswitches 51 is the same as the number of heating burners 3.

[0058] The stove base 1 is provided with a main gas inlet pipe for supplying gas to the four heating burners 3. The main gas inlet pipe includes branch gas inlet pipes corresponding to the four heating burners 3 one by one. Electric control valves are arranged on the branch gas inlet pipes. The electric control valves include a plurality of shunt electric control valves 17 respectively arranged on the branch gas inlet pipes and used to control the corresponding heating burners 3. The shunt electric control valves 17 control whether the branch gas inlet pipes are opened or closed one by one.

[0059] The control mechanism 5 includes four microswitches 51 and four thermocouples 15. Each thermocouple 15 can detect temperature and output an electric signal. Each microswitch 51 controls the corresponding shunt electric control valve 17 to close through the thermocouple 15.

[0060] Regarding the upper end surface of the stove base as a horizontally arranged end surface, there is an included angle between the flip cover and the upper end surface of the stove base. The included angle β = 0 - 95°. When the flip cover completely abuts against the stove base, β = 0°. The microswitch has a trigger value for button pressing, and the trigger value is set corresponding to the included angle. The trigger value α = 50 - 75°, and α is preferably 60°.

[0061] The specific direct control method is that when the flip cover 2 is closed, after the flip cover 2 rotates to an angle relative to the stove base 1 less than α, the pressing portion 6 abuts against the thimble 53. The thimble 53 is pressed and slides downward along the guide sleeve 52 after overcoming the elastic force of the elastic member 54. The elastic member 54 increases the elastic pressure on the pressure block 12. The pressure block 12 presses down the collective pressure plate 54, so that the collective pressure plate 54 simultaneously opens the four microswitches 51. The four microswitches 51 control the four thermocouples 15 to be open-circuited simultaneously one by one. Each thermocouple 15 cannot detect temperature and output an electric signal. The control system cannot receive the corresponding electric signal, so that the control system makes corresponding instructions to control the four shunt electric control valves 17 to close. The four shunt electric control valves 17 cut off the gas input of the four branch gas inlet pipes one by one. After the multiple heating burners 3 cannot obtain gas, they will go out, and the heating burners 3 can be in a closed state, thus achieving a protection effect.

[0062] When the flip cover 2 is opened and rotated to an angle relative to the stove base 1 greater than α, the elastic force of the elastic member 54 pushes the ejector pin 53 to disengage in a direction away from the pressure block 12, reducing the elastic pressure of the elastic member 54 on the pressure block 12. At the same time, the four microswitches 51 are closed. At this time, the four thermocouples 15 are simultaneously energized, and the four thermocouples 15 start to detect the temperature (the temperature is room temperature or the temperature when the heating burner 3 is ignited) and output an electrical signal. After receiving the electrical signal, the control device opens the four branch electric control valves 17, and the four branch electric control valves 17 respectively open the four branch inlet gas pipelines to conduct the gas input, enabling the heating burner 3 to be in a normal working state.

[0063] The specific working process of this solution is as follows:

[0064] In this technical solution, a plurality of heating burners 3 are installed on the stove base 1, the flip cover 2 freely rotates along the hinge axis and completely covers the heating burners 3, the stove base 1 is provided with a control box 4, and the control mechanism 5 in the control box 4 realizes the on-off control of the heating burners 3 according to the opening state of the flip cover 2. When the opening angle of the flip cover 2 exceeds α, the pressing portion 6 and the ejector pin 53 in the control mechanism 5 are disengaged from each other, and the switch device 7 is not triggered by the pressure block 12. At this time, the heating burner 3 is in a conducting state and can work normally when the heating burner 3 is turned on. When the flip cover 2 is rotated and closed to less than α, the pressing portion 6 acts on the control mechanism 5 to switch the heating burner 3 to the off mode, thereby quickly cutting off the operation of the heating burner 3, so that the heating burner 3 is always in the off state to stop heating, avoiding potential safety hazards of the heating burner 3 caused by improper operation of closing the flip cover 2, and thus improving the use safety.

[0065] Embodiment 2:

[0066] See Figure 9, An automatic cut-off protection device for a cooking appliance, which is different from that of Embodiment 1 in that each microswitch 51 indirectly controls the corresponding branch electric control valve 17 to close. The specific indirect control method is that the control mechanism 5 includes one microswitch 51, and one microswitch 51 controls four thermocouples 17 at the same time. When the angle of the flip cover relative to the stove base 1 is greater than α, this microswitch 51 turns on. The microswitch 51 controls the four thermocouples 15 to be open-circuited at the same time. The four thermocouples 15 cannot detect the temperature and output an electrical signal, and the control system cannot receive the corresponding electrical signal, so that the control system gives corresponding instructions to control the four branch electric control valves 17 to close, thereby cutting off the gas input of the four branch inlet pipelines, enabling the heating burner 3 to be in a closed state. On the contrary, this microswitch 51 turns off to stop the control, so that the four thermocouples 15 are conducting at the same time. The four thermocouples 15 start to monitor the temperature (the temperature is room temperature or the temperature when the heating burner 3 is firing) and output an electrical signal. After receiving the electrical signal, the control device opens the four branch electric control valves 17, so that the four branch inlet pipelines are conducted, and the heating burner 3 is in a normal working state.

[0067] Embodiment 3:

[0068] See Figure 10 , An automatic cut-off protection device for a cooking appliance, which is different from that of Embodiment 1 in that the control mechanism 5 includes one microswitch 51, and the electric control valve includes a main electric control valve 16 arranged on the main inlet pipeline 18. The main inlet pipeline 18 is provided with four branch inlet pipelines corresponding to the four heating burners 3 one by one. When the angle of the flip cover relative to the stove base 1 is less than α, the control mechanism 5 controls the microswitch 51 to turn on. The microswitch 51 controls the main electric control valve 16 to close, so that the main inlet pipeline 18 is disconnected, and the gas cannot be transported through the main inlet pipeline 18 to the four branch inlet pipelines, making the heating burner 3 in a closed state. On the contrary, the control mechanism 5 controls the microswitch 51 to turn off. At this time, the main electric control valve 16 is opened, and the main inlet pipeline 18 is in a conducting state, and the gas can be transported to the four branch inlet pipelines, thereby providing gas for the four heating burners 3 and making the heating burner 3 in a normal working state.

[0069] Embodiment 4:

[0070] An automatic cut-off protection device for a cooking appliance, which is different from that of Embodiment 1. The heating furnace head 3 can generally be an induction cooker. The control mechanism 5 includes a micro switch 51, and the micro switch 51 can control the conduction or closing of the control circuit of the corresponding induction cooker. When the flip cover 2 is closed, after the flip cover 2 rotates to an angle relative to the stove base 1 less than α, the control mechanism 5 controls the micro switch 51 to open, and the micro switch 51 controls the control circuit of the induction cooker to close, cutting off the power supply to the induction cooker, so that the induction cooker is in the off state. On the contrary, when the flip cover 2 is opened, after the flip cover 2 rotates to an angle relative to the stove base 1 greater than α, the control mechanism 5 releases the control of the micro switch 51. The micro switch 51 is a normally closed switch. The micro switch 51 is closed, and the micro switch 51 controls the control circuit of the induction cooker to open, conducting the power supply to the induction cooker, so that the induction cooker is in the normal working state.

[0071] The above shows and describes the basic principle, main features and advantages of the present technical solution. Those skilled in the art should understand that the present technical solution is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present technical solution. Without departing from the spirit and scope of the present technical solution, the present technical solution will have various changes and improvements, and these changes and improvements all fall within the scope of the present technical solution claimed. The scope of protection required by the present technical solution is defined by the appended claims and their equivalents.

Claims

1. An automatic cut-off protection device for a stove, comprising a stove base (1) and a flip cover (2) hinged to the stove base (1), a heating burner (3) being mounted on the stove base (1), and the flip cover (2) being used to cover the heating burner (3), characterized in that: The stove base (1) is provided with a control mechanism (5); the flip cover (2) has a pressing portion (6) at one end close to the control mechanism (5); when the flip cover (2) is closed, the pressing portion (6) cooperates with the control mechanism (5) to put the heating furnace head (3) in a closed state; when the flip cover (2) is opened, the control mechanism (5) can put the heating furnace head (3) in a normal working state.

2. The automatic cut-off protection device for cookers according to claim 1, characterized in that: The heating burner (3) is a gas burner, and the gas intake is controlled by an electric control valve; The control mechanism (5) comprises at least one micro switch (51), the pressing portion (6) acts directly or indirectly on the micro switch (51), and the micro switch (51) directly or indirectly controls the electric control valve to close.

3. The automatic cut-off protection device for cookers according to claim 2, characterized in that: The control mechanism (5) comprises a plurality of micro switches (51) whose number is the same as the number of the heating furnace heads (3); The electric control valve comprises a plurality of branch electric control valves (17) respectively arranged on the branch air inlet pipelines and used for controlling the corresponding heating furnace heads (3); Each micro switch (51) controls the corresponding branch electric control valve (17) to close.

4. The automatic cut-off protection device for cookers according to claim 3, characterized in that: A corresponding thermocouple (15) is arranged next to each heating furnace head (3), and a plurality of thermocouples (15) are arranged one by one corresponding to a plurality of micro switches (51). The corresponding micro switches (51) control the corresponding thermocouple (15) to be disconnected, thereby controlling the corresponding branch electric control valve (17) to be closed.

5. The automatic cut-off protection device for cookers according to claim 2, characterized in that: The electric control valve comprises a main electric control valve (16) arranged on a main air intake pipeline, and the main air intake pipeline is connected to a corresponding heating furnace head (3).

6. The automatic cut-off protection device for cookers according to claim 1, characterized in that: The heating furnace head is an induction cooker, and the control mechanism (5) comprises at least one micro switch (51), and the micro switch (51) can control the control circuit of the corresponding induction cooker to be turned on or off.

7. The automatic cut-off protection device for cookers according to any one of claims 1 to 6, characterized in that: The control mechanism (5) further comprises a guide sleeve (52), a ejector pin (53) arranged on the guide sleeve (52), and an elastic member (54), wherein the ejector pin (53) slides relative to the guide sleeve (52); The elastic member (54) is located between the ejector pin (53) and the micro switch (51), and the elastic force of the elastic member (54) causes the ejector pin (53) to have a tendency to move away from the micro switch (51); When the ejector pin (53) is pressed down, the ejector pin (53) pushes the elastic member (54) to open the micro switch (51); when the ejector pin (53) is disengaged, the micro switch (51) is in a closed state.

8. The automatic cut-off protection device for cookers according to claim 7, characterized in that: The stove base (1) is provided with a control box (4), the control mechanism (5) is located in the control box (4), the control box (4) is provided with a seat body (14), and the micro switch (51) is arranged in the seat body (14).

9. The automatic cut-off protection device for cookers according to claim 8, characterized in that: The guide sleeve (52) is provided with a pressing block (12), and the pressing block (12) is located at one end of the ejector pin (53) along the sliding direction and is used to abut against the micro switch (51); Or / and, when there are multiple micro switches (51), the base (14) is provided with a collective pressure plate (8), the collective pressure plate (8) is arranged between the micro switches (51) or the elastic member (54), and the collective pressure plate (8) is in contact with multiple micro switches (51).

10. The automatic cut-off protection device for cookers according to claim 9, characterized in that: The two ends of the assembly pressure plate (8) close to the seat body (14) are provided with positioning parts (9), and the two sides of the seat body (14) are provided with positioning grooves (10) for the positioning parts (9) to be embedded and limited.

Images