A temperature sensor for electric cooker and its design method

Abstract

The present invention relates to the technical field of temperature sensors, and more specifically, to an electric cooker temperature sensor and a design method thereof, comprising: a movable heat transfer cover and a mounting base arranged below the movable heat transfer cover; an insulating bracket is installed in the mounting cavity of the movable heat transfer cover, a thermistor and a thermal fuse are installed on the insulating bracket, a heat conductive sheet is arranged between the thermistor and the movable heat transfer cover; a pressure spring is arranged between the insulating bracket and the mounting base. In an electric cooker temperature sensor of the present invention, a heat conductive sheet is arranged between the thermistor and the movable heat transfer cover, which can ensure the heat transfer effect, improve the temperature detection effect of the thermistor, and solve the problems of slow thermal response and poor thermal response consistency of existing products; two thermal fuses are arranged inside the sensor to improve the safety of use.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature sensors, and more particularly to an electric cooker temperature sensor and a design method thereof. Background Art

[0002] Temperature is a very critical physical quantity for controlling the cooking of smart rice cookers. Smart rice cookers can monitor temperature and judge possible heating defects, so as to detect and deal with them in time, prevent the occurrence of sticking, and run according to the pre-set temperature to ensure the quality of cooking. To achieve this process, the temperature must be collected by combining thermistor temperature sensor with a single-chip microcomputer. Then digital temperature conversion and output can be realized. However, the current temperature sensor device used for rice cookers / electric pressure cookers / electric cooking pots is composed of an axial glass-sealed thermistor plus an insulating sleeve. Since the insulating sleeve is insulated and the thermistor is installed in the sleeve, there is also a gap, and the axial glass-sealed thermistor cannot be effectively installed close to the heat transfer surface. Therefore, the current product has a slow thermal response and poor thermal response consistency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an electric cooker temperature sensor and a design method thereof.

[0004] The electric cooker temperature sensor and the design method thereof described in the present invention adopt the following technical solutions:

[0005] An electric cooker temperature sensor comprises: a movable heat transfer cover and a mounting base arranged below the movable heat transfer cover; an insulating bracket is assembled in the mounting cavity of the movable heat transfer cover, a thermistor and a thermal fuse are mounted on the insulating bracket, a heat conducting sheet is arranged between the thermistor and the movable heat transfer cover; a pressure spring is arranged between the insulating bracket and the mounting base.

[0006] Furthermore, the insulating bracket is a ceramic bracket, and a protective groove is provided on the insulating bracket for the electrode wires of the thermistor and the electrode wires of the thermal fuse to pass through.

[0007] Furthermore, two thermal fuses are provided, and the two thermal fuses are arranged oppositely on two sides of the thermistor or are arranged in parallel on one side of the thermistor; the heat conducting sheet is located between the two thermal fuses and the movable heat transfer cover.

[0008] Furthermore, a pressure silicone pad is provided at the connection between the thermistor and the insulating bracket.

[0009] Furthermore, the heat conducting sheet is a ceramic heat conducting sheet, one side of the heat conducting sheet is adhered to the movable heat transfer cover through heat conducting silicone, and the other side of the heat conducting sheet is connected to the thermistor and the thermal fuse through heat conducting silicone.

[0010] Furthermore, an anti-mistake groove is provided on the heat conducting sheet, and the anti-mistake groove is engaged with the anti-mistake protrusion on the movable heat transfer cover.

[0011] Furthermore, the middle part of the movable heat transfer cover is slidably arranged in the central hole of the heating plate; the insulating bracket comprises: a support platform, the support platform is fixedly arranged in the mounting ring, the mounting ring is threadedly connected to the inner thread surface of the movable heat transfer cover, the bottom of the support platform is fixedly connected to the vertical support body, the middle part of the vertical support body is slidably arranged in the vertical hole of the mounting base, and the bottom of the vertical support body is connected to the limiter clamped under the mounting base; a control part for controlling the limiter to be retracted into the vertical support body or extended out of the vertical support body is arranged in the vertical support body; a pressure spring is sleeved on the vertical support body and is located between the support platform and the mounting base.

[0012] Furthermore, the limiter includes: a pressing slide, two pressing slides are relatively slidably arranged in the side sliding openings on both sides of the vertical support body, the outer protrusions at the outer ends of the two pressing slides can be embedded in the side clamping grooves on both sides of the vertical support body, and a tension spring is fixedly connected between the two inner protrusions at the inner ends of the two pressing slides; the upper sides of the inner ends of the two pressing slides are provided with pressure-bearing inclined surfaces; the control part includes: a lifting and lowering pressure block slidably arranged in the vertical sliding groove of the vertical support body, the triangular pressing head at the bottom of the lifting and lowering pressure block presses between the two pressure-bearing inclined surfaces, the lifting and lowering pressure block is threadedly connected to the bottom of the control screw, the control screw is rotatably connected to the screw plate in the vertical sliding groove, the worm wheel fixed to the bottom of the control screw is meshed with the worm gear rotatably arranged on the support platform, and the top of the control wheel on the worm gear passes through the upper surface of the support platform.

[0013] Furthermore, three groups of parallel wire guiding channels are provided on the support platform, six wire embedding columns are fixed at the bottom of the support platform, and the six wire embedding columns are sealed and slidably arranged in the six power connection holes of the mounting base, and the six power connection holes are all connected with power connection clamps, and a power connection plug block which can be plugged into the power connection clamp is provided in the installation cavity of each wire embedding column, so that when the pot in the electric cooker generates pressure on the movable heat transfer cover so that the movable heat transfer cover drives the support platform to slide to a preset distance in the direction of the mounting base, the six power connection plug blocks are plugged into the six power connection clamps; each wire guiding channel includes two wire penetration holes, and the two wire penetration holes are connected to the installation cavities of the two wire embedding columns, and the two ends of the thermistor are connected one by one with the two power connection plug blocks, and two thermal fuses are provided, and the two power connection plug blocks at the two ends of each thermal fuse are connected one by one.

[0014] Furthermore, rack teeth are provided on the side surfaces of both sides of the vertical support body, and the two rack teeth are meshed with two gears fixed in the middle of the two bidirectional screws, and the two bidirectional screws are relatively rotatable in the recess below the mounting base, and the two ends of the two bidirectional screws are threadedly connected with the two movable seat plates, and the outer ends of the two movable seat plates are fixed with three partition plates, and the six partition plates are slidably arranged in the six horizontal holes of the mounting base, and the six partition plates are inserted into the six power connection holes of the mounting base to isolate the six power connection blocks and the six power connection clamps when the inner pot of the electric cooker does not generate pressure on the movable heat transfer cover; two top pressure slides are clamped under the two gears.

[0015] A design method for an electric cooker temperature sensor, applied to the electric cooker temperature sensor, comprises:

[0016] A protective groove is provided on the insulating support for the electrode wires of the thermistor and the electrode wires of the thermal fuse to pass through;

[0017] Install the thermistor and two thermal fuses in parallel on the insulating bracket, and pass the electrode wires at both ends of the thermistor and the two thermal fuses through the protective grooves and connect them to the rice cooker control panel;

[0018] The movable heat transfer cover is connected to the connecting base, a heat conducting sheet is arranged between the thermistor and the movable heat transfer cover, and a pressure spring is arranged between the insulating bracket and the connecting base.

[0019] It can be seen from the above scheme that the beneficial effects of the present invention are:

[0020] In an electric cooker temperature sensor of the present invention, a heat conductive sheet is arranged between the thermistor and the movable heat transfer cover, which can ensure the heat transfer effect, improve the temperature detection effect of the thermistor, and solve the problems of slow thermal response and poor thermal response consistency of existing products; two thermal fuses are arranged inside the sensor to improve the safety of use.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 A schematic diagram of a first solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 1 ;

[0024] Figure 2 A schematic diagram of a first solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 2 ;

[0025] Figure 3 A cross section of a first solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 1 ;

[0026] Figure 4 A cross section of a first solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 2 ;

[0027] Figure 5 A schematic diagram of a second solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 1 ;

[0028] Figure 6 A schematic diagram of a second solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 2 ;

[0029] Figure 7 A cross section of a second solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 1 ;

[0030] Figure 8 A cross section of a second solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 2 ;

[0031] Fig. 9 A partial schematic diagram of a second solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 1 ;

[0032] Fig.10 A partial schematic diagram of a second solution of an electric cooker temperature sensor provided by an embodiment of the present invention Figure 2 ;

[0033] Fig.11 A schematic diagram of an insulating bracket provided in an embodiment of the present invention;

[0034] Fig.12 A schematic diagram of a limiter and a control unit provided in an embodiment of the present invention;

[0035] Fig.13 A schematic diagram of a power connection clamp provided in an embodiment of the present invention;

[0036] Fig.14 A partial view of a vertical support and a gear provided in an embodiment of the present invention;

[0037] Fig.15 A schematic diagram of a mounting base provided in an embodiment of the present invention.

[0038] Icons: movable heat transfer cover 1; mounting base 2; insulating bracket 3; thermistor 4; thermal fuse 5; heat conductive sheet 6; pressure spring 7; protective groove 8; pressure silicone pad 9; anti-fool groove 10; support platform 11; mounting ring 12; vertical support body 13; top pressure slide plate 14; expansion spring 15; lifting and lowering pressure block 16; control screw 17; worm gear 18; worm 19; wire embedding column 20; power connection clamp 21; power connection plug block 22; bidirectional screw 23; gear 24; movable seat plate 25; partition plug plate 26. DETAILED DESCRIPTION

[0039] In order to clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0041] Embodiment 1

[0042] See also Figure 1-4 The present invention provides an electric cooker temperature sensor, comprising: a movable heat transfer cover 1 and a mounting base 2 arranged below the movable heat transfer cover 1; an insulating bracket 3 is installed in the mounting cavity of the movable heat transfer cover 1, a thermistor 4 and a thermal fuse 5 are mounted on the insulating bracket 3, a heat conducting sheet 6 is arranged between the thermistor 4 and the movable heat transfer cover 1; a pressure spring 7 is arranged between the insulating bracket 3 and the mounting base 2; two thermal fuses 5 are provided, and the two thermal fuses 5 are arranged oppositely on both sides of the thermistor 4 or the two thermal fuses 5 are arranged in parallel on one side of the thermistor 4.

[0043] The working principle and technical effects of the above technical solution are as follows:

[0044] In the electric cooker temperature sensor of the present invention, a heat conductive sheet 6 is arranged between the thermistor 4 and the movable heat transfer cover 1, which can effectively improve the heat transfer efficiency. The heat conductive sheet 6 can transfer the heat of the movable heat transfer cover 1 to the thermistor 4 more evenly, so that the temperature detection of the thermistor 4 is more accurate and timely. This design helps to reduce the response time of the thermistor 4 to temperature changes, thereby improving the response speed of the temperature control system; by using the heat conductive sheet 6, the thermistor 4 can obtain a more stable and consistent temperature signal, solving the problems of slow thermal response and poor consistency that may occur in existing products, thereby improving the accuracy of temperature detection and the reliability of the system; two thermal fuses 5 are arranged inside, and this design greatly improves the safety during use. Safety, the thermal fuse 5 can cut off the circuit in the event of overheating, thereby preventing safety hazards caused by overheating of the equipment. The two thermal fuses 5 provide double protection. Once one thermal fuse 5 fails, the other thermal fuse 5 can still work effectively, further enhancing the safety of the system; the design of the insulating bracket 3 not only provides a stable installation position, but also can isolate the thermistor 4 from other high-temperature components to prevent high temperature from affecting the performance of the thermistor 4, which helps to improve the long-term stability and durability of the sensor: since the temperature detection effect of the thermistor 4 is improved, the temperature control system of the electric cooker can respond to temperature changes more quickly, making the temperature control during the cooking process more precise, improving the user's operating experience and cooking effect.

[0045] The insulating support 3 is a ceramic support and is provided with a protective through-groove 8 for the electrode wires of the thermistor 4 and the electrode wires of the thermal fuse 5 to pass through.

[0046] The insulating bracket 3 is a ceramic bracket and is provided with a protective groove 8 for the electrode wires of the thermistor 4 and the thermal fuse 5 to pass through. The ceramic bracket has excellent insulation performance and can effectively prevent short circuit or leakage between the electrode wires. The high resistivity of the ceramic ensures the safety and stability of the electrical system and reduces the risk of failure due to poor insulation; the protective groove 8 provides a safe passage for the electrode wires, avoiding direct contact of the electrode wires with other components or high-temperature surfaces, thereby reducing the risk of damage to the electrode wires or aging of the insulation layer, and helping to ensure the stability and reliability of the electrical connection; the ceramic bracket not only has excellent insulation performance, but also has high mechanical strength, and can firmly support the thermistor 4 and the thermal fuse 5 to prevent them from displacement or loosening during use, thereby ensuring the precise positioning of the components and long-term stable operation.

[0047] A pressure silicone pad 9 is provided at the connection between the thermistor 4 and the insulating bracket 3. The pressure silicone pad 9 can fill the tiny gap between the thermistor 4 and the insulating bracket 3 to ensure a tighter and more stable connection between the two. This stable connection helps reduce poor contact or looseness caused by vibration or temperature changes; the pressure silicone pad 9 can provide an additional electrical insulation layer between the thermistor and the insulating bracket; this helps prevent electrical failures and leakage, and enhances the electrical safety of the entire temperature sensor; during installation or use, a certain amount of mechanical stress may be generated between the thermistor 4 and the insulating bracket 3, and the pressure silicone pad 9 can absorb this stress, reduce potential damage to the thermistor 4 and the insulating bracket 3, and extend their service life.

[0048] The heat conducting sheet 6 is a ceramic heat conducting sheet, one side of which is adhered to the movable heat transfer cover 1 through heat conducting silicone, and the other side of which is connected to the thermistor 4 and the thermal fuse 5 through heat conducting silicone. The heat conducting sheet 6 is provided with an anti-mistake groove 10, which is engaged with the anti-mistake protrusion on the movable heat transfer cover 1; the heat conducting sheet 6 is provided with a semicircular groove for the thermistor 4 to engage. The heat conducting sheet 6 can effectively transfer heat from the movable heat transfer cover 1 to the thermistor 4 and the thermal fuse 5. The high thermal conductivity of the heat conducting sheet 6 ensures that the heat can be distributed quickly and evenly, thereby improving the response speed of temperature detection and control. The thermal conductive silicone forms a layer of thermal conductive interface between the heat conducting sheet 6 and the movable heat transfer cover 1, the thermistor 4 and the thermal fuse 5, which can fill in the tiny poor contact points and ensure that heat is effectively transferred from one component to another. The flexible properties of the silicone also allow some mechanical vibrations and small displacements under temperature changes without affecting the heat transfer effect. Since the ceramic heat conducting sheet can efficiently transfer heat, the thermistor 4 can respond to temperature changes faster, thereby improving the reaction speed and accuracy of the temperature control system. This is particularly important for devices such as electric cookers that require precise temperature control. The ceramic heat conducting sheet can evenly distribute heat to the thermistor and the thermal fuse, thereby preventing local overheating or uneven cooling, and ensuring the stability and reliability of the entire system. In summary, the combined design of ceramic heat conductive sheet and thermal conductive silicone optimizes the efficiency and uniformity of heat transfer, improves the response speed and accuracy of the temperature sensor, and also enhances the stability and safety of the system. These design improvements together improve the overall performance of the rice cooker temperature sensor.

[0049] Embodiment 2

[0050] See also Figure 5-15In an electric cooker temperature sensor of the present invention, the middle part of a movable heat transfer cover 1 is slidably arranged in the central hole of a heating plate; an insulating bracket 3 comprises a support platform 11, the support platform 11 is fixedly arranged in a mounting ring 12, the mounting ring 12 is threadedly connected to the inner thread surface of the movable heat transfer cover 1, the bottom of the support platform 11 is fixedly connected to a vertical support body 13, the middle part of the vertical support body 13 is slidably arranged in a vertical hole of a mounting base 2, and the bottom of the vertical support body 13 is connected to a limiter clamped under the mounting base 2; a control part for controlling the limiter to be retracted into the vertical support body 13 or extended out of the vertical support body 13 is arranged in the vertical support body 13; a pressure spring 7 is sleeved on the vertical support body 13 and is located between the support platform 11 and the mounting base 2.

[0051] In an electric cooker temperature sensor of the present invention, the middle part of a movable heat transfer cover 1 is slidably arranged in the central hole of a heating plate, and a mounting base 2 is mounted in the electric cooker base by means of bolts and nuts. Since a support platform 11 is fixed in a mounting ring 12, and the mounting ring 12 is threadedly connected to the inner thread surface of the movable heat transfer cover 1, the movable heat transfer cover 1 and the mounting ring 12 are more convenient to disassemble or connect. The movable heat transfer cover 1 is connected to an insulating bracket 3, and the insulating bracket 3 is movably connected to the mounting base 2. When a failure or maintenance occurs, the movable heat transfer cover 1 can be rotated to separate the movable heat transfer cover 1 from the mounting ring 12. At this time, the control unit can control the limiter to be retracted into a vertical support body 13, and then the support platform 11 and the vertical support body 13 can be controlled to move upward, and the vertical support body 13 can be pulled out from the vertical hole of the mounting base 2, so that the thermistor 4 and the thermal fuse 5 mounted on the support platform 11 can be easily repaired, maintained or replaced, thereby solving the problem that the electric cooker temperature sensor in the prior art cannot be directly removed and needs to disassemble the electric cooker shell and the electric cooker shell. With regard to the heating plate, the above-mentioned structure makes it easier to replace the thermal fuse 5 when it is blown. Since the operation is very simple, the user can replace it by himself, saving time and cost. The middle part of the movable heat transfer cover 1 is slidably arranged in the central hole of the heating plate, ensuring the stable positioning of the movable heat transfer cover 1 on the heating plate and avoiding the displacement of the heat transfer cover, thereby ensuring the accuracy and reliability of the sensor. The support platform 11 of the insulating bracket 3 is fixed in the mounting ring 12 and is connected to the inner thread surface of the movable heat transfer cover 1 through threads. The vertical support body 13 at the bottom of the support platform 11 is slidably arranged in the vertical hole of the mounting base 2, ensuring the stability and accurate positioning of the present invention in the heating plate. The limiter connected to the bottom of the vertical support body 13 can be clamped under the mounting base 2 to prevent the vertical support body from excessive movement, thereby ensuring the correct gap between the support platform 11 and the movable heat transfer cover 1. The pressure spring 7 is sleeved on the vertical support body 13 and is located between the support platform 11 and the mounting base 2 to ensure good contact between the thermistor 4 and the heat conductive sheet 6. The pressure spring 7 can also absorb mechanical stress caused by vibration or temperature changes, maintaining the stability of the component and the long-term reliability of the sensor.

[0052] The limiter includes: a pressing slide 14, two pressing slides 14 are relatively slidably arranged in the side sliding openings on both sides of the vertical support body 13, the outer protrusions at the outer ends of the two pressing slides 14 can be embedded in the side grooves on both sides of the vertical support body 13, and a stretching spring 15 is fixedly connected between the two inner protrusions at the inner ends of the two pressing slides 14; the upper sides of the inner ends of the two pressing slides 14 are provided with pressure-bearing inclined surfaces; the control part includes: a lifting and lowering pressure block 16 slidably arranged in the vertical slide groove of the vertical support body 13, the triangular pressing head at the bottom of the lifting and lowering pressure block 16 presses between the two pressure-bearing inclined surfaces, the lifting and lowering pressure block 16 is threadedly connected to the bottom of the control screw 17, the control screw 17 is rotatably connected to the screw plate in the vertical slide groove, the worm wheel 18 fixed to the bottom of the control screw 17 is meshed with the worm 19 rotatably arranged on the support platform 11, and the top of the control wheel on the worm 19 passes through the upper surface of the support platform 11.

[0053] The limiter and control unit have simple structure, convenient operation and strong practicality. Figure 7 As shown, at this time, the limiter is extended out of the vertical support body 13. When it is necessary to control the limiter to be retracted into the vertical support body 13, the control wheel is turned to drive the worm 19 to rotate. When the worm 19 rotates, it can drive the worm wheel 18 to rotate, thereby driving the control screw 17 to rotate through the worm wheel 18. The control screw 17 rotates to change its position with the inner thread groove of the lifting and lowering pressure block 16. When the limiter is retracted into the vertical support body 13, the length of the control screw 17 inserted into the inner thread groove of the lifting and lowering pressure block 16 becomes larger. At this time, the lifting and lowering pressure block 16 slides upward in the vertical support body 13, so that the triangular top pressure head at the bottom of the lifting and lowering pressure block 16 gradually releases the pressure on the two pressure-bearing inclined surfaces, and the two top pressure slide plates 14 are under the elastic force of the tension spring 15. The two pressing slides 14 move away from each other and stretch the tension springs 15, and the outer protrusions at the outer ends of the two pressing slides 14 disengage from the side grooves on both sides of the vertical support body 13, thereby blocking the bottom of the mounting base 2 through the two pressing slides 14 to achieve a stable connection with the mounting base 2.

[0054] The support platform 11 is provided with three groups of parallel wire guiding channels. Six wire embedding columns 20 are fixed at the bottom of the support platform 11. The six wire embedding columns 20 are sealed and slidably arranged in the six power connection holes of the connecting base 2. The six power connection holes are all connected with power connection clamps 21. A power connection plug block 22 which can be plugged into the power connection clamp 21 is arranged in the installation cavity of each wire embedding column 20. When the pot in the electric cooker generates pressure on the movable heat transfer cover 1 so that the movable heat transfer cover 1 drives the support platform 11 to slide to a preset distance in the direction of the connecting base 2, the six power connection plug blocks 22 are plugged into the six power connection clamps 21. Each wire guiding channel includes two wire penetration holes, and the two wire penetration holes are connected with the installation cavities of the two wire embedding columns 20. The two ends of the thermistor 4 are connected to the two power connection plug blocks 22 one by one. Two thermal fuses 5 are arranged. The two power connection plug blocks 22 at the two ends of each thermal fuse 5 are connected one by one.

[0055] The two ends of the thermistor 4 are connected to the two power plug blocks 22 one by one, and the two power plug blocks 22 at the two ends of each thermal fuse 5 are connected one by one. The power plug blocks 22 and the power clamps 21 are used to replace the wires, so as to solve the problem that the wires are bent for a long time and easily damaged or fatigued due to the long-term up-and-down movement of the movable heat transfer cover 1 when the electric cooker is used in the prior art, thereby improving the service life and measurement accuracy of the present invention. When the inner pot of the electric cooker is placed in the outer pot of the electric cooker, pressure is generated on the movable heat transfer cover 1, and the movable heat transfer cover 1 drives the support platform 11 to move downward, and the support platform 11 carries The six wire embedding columns 20 are driven to move downward, so that the six wire embedding columns 20 are sealed and slid in the six power connection holes of the installation base 2, and the six power connection plug blocks 22 are driven to move downward and inserted into the six power connection clips 21. The six power connection clips 21 are connected to the circuit board. After the six power connection plug blocks 22 move downward and are inserted into the six power connection clips 21, the circuit connection and control are realized. When the inner pot of the electric cooker is taken out of the outer shell of the electric cooker, the six power connection plug blocks 22 move upward and separate from the six power connection clips 21 to cut off the circuit. The electric cooker temperature sensor in the above scheme has the following advantages:

[0056] 1. Improve connection stability: Using the mechanical cooperation of the power plug block 22 and the power clamp 21 to replace the traditional wire connection can provide a more solid and durable connection method. This connection method reduces wire damage or fatigue caused by the frequent movement of the movable heat transfer cover 1, thereby improving the service life and measurement accuracy of the entire sensor.

[0057] 2. Easy to maintain and replace: Since there are no wire connections, there is no need to worry about damage or wear of the wires, which means that when the sensor needs to be replaced or maintenance is performed, it can be removed and replaced more easily without having to worry about wire problems.

[0058] 3. Reduce electrical failures: Improve the reliability of electrical connections. The cooperation between the power plug block 22 and the power clamp 21 can provide a more stable electrical connection, reduce the risk of electrical failures caused by poor contact or wire breakage, and improve the overall reliability of the system.

[0059] 4. Simplify the assembly process: The design of power plug blocks and power clips simplifies the assembly process, makes it easier to achieve standardized interfaces and connection methods, and improves production and assembly efficiency.

[0060] 5. Strong adaptability: With better scalability, this design can easily adapt to different sensor and circuit board configurations, because the combination of the power plug block and the power clip provides a flexible connection method, making the sensor more easily compatible with different circuit systems.

[0061] 6. Improved safety: With the automatic power-off function, when the inner pot is taken out, the power plug block 22 and the power clamp 21 will automatically separate, thereby cutting off the circuit, improving the safety of the device in the non-working state, and avoiding unnecessary energy consumption and potential electrical risks.

[0062] 7. Reduce pollution and corrosion: Six wire embedding columns 20 are sealed and slidably installed in the six power connection holes of the installation base 2. The six power connection holes are all connected with power connection clamps 21. Each wire embedding column 20 has an installation cavity provided with a power connection plug block 22 that can be plugged into the power connection clamp 21, which can reduce corrosion and pollution caused by factors such as water vapor and improve the durability and reliability of the entire equipment.

[0063] The power connection clip 21 includes a power connection plate and two elastic metal conductive clips connected to the power connection plate. The tops of the two elastic metal conductive clips form an angle. The adjacent ends of the tops of the two elastic metal conductive clips are provided with a top pressing inclined surface that slidably cooperates with the power connection plug block 22, so that the power connection plug block 22 can be inserted between the two elastic metal conductive clips and maintain a stable connection under the elastic force of the two elastic metal conductive clips, thereby realizing current conduction with good stability.

[0064] The vertical support body 13 is provided with rack teeth on both side surfaces, and the two rack teeth are meshed with two gears 24 fixed in the middle of the two bidirectional screws 23. The two bidirectional screws 23 are relatively rotatable in the recess below the mounting base 2. The two ends of the two bidirectional screws 23 are threadedly connected with the two movable seat plates 25. The outer ends of the two movable seat plates 25 are fixedly connected with three partition plug-ins 26. The six partition plug-ins 26 are slidably arranged in the six horizontal holes of the mounting base 2. The six partition plug-ins 26 are inserted into the six power connection holes of the mounting base 2 to isolate the six power connection blocks 22 and the six power connection clamps 21 when the inner pot of the electric cooker does not generate pressure on the movable heat transfer cover 1; the two top pressure slide plates 14 are clamped under the two gears 24.

[0065] When the inner pot of the electric cooker is taken out from the outer shell of the electric cooker, the six partition plugs 26 are plugged into the six power connection holes of the mounting base 2 to isolate the six power connection plug blocks 22 and the six power connection clips 21 when the inner pot of the electric cooker does not exert pressure on the movable heat transfer cover 1. This situation can be better applied to taking out the inner pot of the electric cooker without cutting off the power after the food in the inner pot of the electric cooker is cooked. The design of the above scheme has the following advantages: avoiding electrical short circuit and effectively isolating the circuit. When the inner pot of the electric cooker is taken out, the partition plug 26 can effectively isolate the power connection plug block 22 and the power connection clip 21, thereby preventing the electrical connection from accidentally shorting when the inner pot is not exerting pressure. The circuit or contact between the inner pot and the power plug 22 can be avoided to avoid electrical failure or short circuit caused by electrical contact problems, improve safety, and prevent electrical accidents. When the inner pot is taken out, the function of the partition plug 26 is to cut off the circuit to prevent the power plug block 22 and the power clip 21 from making electrical contact without pressure, thereby improving the safety of the equipment and reducing the potential risk of electrical accidents. It can adapt to different operating scenarios. This design can achieve safe isolation after the food in the inner pot of the electric cooker is cooked, even if the power is not cut off. Through the design of the automatically plugged partition plug 26, when operating the inner pot, the user does not need to manually disconnect the power or perform complicated operations. This automatic partition design makes the operation more convenient and improves the user experience; by effectively isolating the electrical connection, the maintenance and repair frequency required due to damage or failure of the electrical part is reduced, and the maintenance cost is reduced.

[0066] When the inner pot of the electric cooker is installed in the outer shell of the electric cooker, the inner pot of the electric cooker generates pressure on the movable heat transfer cover 1, so that the vertical support body 13 moves downward. Rack teeth are arranged on the side surfaces of the vertical support body 13. When the vertical support body 13 moves, it drives the two gears 24 to rotate. The two gears 24 drive the two bidirectional screws 23 to rotate. When the vertical support body 13 moves downward, the two bidirectional screws 23 rotate to drive the two movable seat plates 25 to approach each other, thereby driving the six partition plug plates 26 to disengage from the six electrical connection holes through the two movable seat plates 25, so that when the vertical support body 13 moves to a preset distance, the six The power plug block 22 is inserted into the six power clips 21 to achieve a stable connection between the six power plug blocks 22 and the six power clips 21. Conversely, when the inner pot of the electric cooker is taken out, the support platform 11 moves upward under the elastic force of the pressure spring 7, thereby driving the movable heat transfer cover 1 to move upward, and the movable heat transfer cover 1 drives the vertical support body 13 to move upward, thereby controlling the six partition plates 26 to be reinserted into the six power connection holes for effective cutting. A compression spring can also be arranged between the two movable seat plates 25 to improve the effect of reinserting the six partition plates 26 into the six power connection holes.

[0067] Embodiment 3

[0068] See also Figure 1-15 , a design method of an electric cooker temperature sensor, applied to the electric cooker temperature sensor, comprising:

[0069] A protective groove 8 is provided on the insulating support 3 for the electrode wires of the thermistor 4 and the electrode wires of the thermal fuse 5 to pass through;

[0070] The thermistor 4 and two thermal fuses 5 are installed in parallel on the insulating bracket 3, and the electrode wires at both ends of the thermistor 4 and the two thermal fuses 5 are passed through the protective through slot 8 and connected to the electric cooker control panel;

[0071] The movable heat transfer cover 1 is connected to the mounting base 2 , and a heat conducting sheet 6 is arranged between the thermistor 4 and the movable heat transfer cover 1 , and a pressure spring 7 is arranged between the insulating bracket 3 and the mounting base 2 .

[0072] The electric cooker temperature sensor manufactured by adopting the design method of the electric cooker temperature sensor of the present invention has good stability and high detection accuracy.

[0073] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An electric cooker temperature sensor, characterized in that: include: A movable heat transfer cover and a mounting base arranged below the movable heat transfer cover; An insulating bracket is installed in the installation cavity of the movable heat transfer cover, a thermistor and a thermal fuse are installed on the insulating bracket, a heat conducting sheet is arranged between the thermistor and the movable heat transfer cover; a pressure spring is arranged between the insulating bracket and the mounting base; The insulating bracket includes: a support platform, the support platform is fixed in the mounting ring, the mounting ring is threadedly connected to the inner thread surface of the movable heat transfer cover, the bottom of the support platform is fixedly connected to the vertical support body, the middle of the vertical support body is slidably arranged in the vertical hole of the connecting base, and the bottom of the vertical support body is connected to the limiter clamped under the connecting base; a control part for controlling the limiter to be retracted into the vertical support body or extended out of the vertical support body is arranged in the vertical support body; a pressure spring is sleeved on the vertical support body and is located between the support platform and the connecting base; The support platform is provided with three groups of parallel wire guiding channels, six wire embedding columns are fixed at the bottom of the support platform, and the six wire embedding columns are sealed and slidably arranged in the six power connection holes of the connecting base, and the six power connection holes are all connected with power connection clamps, and the installation cavity of each wire embedding column is provided with a power connection plug block which can be plugged into the power connection clamp, so that when the pot in the electric cooker generates pressure on the movable heat transfer cover so that the movable heat transfer cover drives the support platform to slide to a preset distance in the direction of the connecting base, the six power connection plug blocks are plugged into the six power connection clamps; each wire guiding channel includes two wire penetration holes, and the two wire penetration holes are connected with the installation cavities of the two wire embedding columns, and the two ends of the thermistor are connected one by one with the two power connection plug blocks, and two thermal fuses are provided, and the two ends of each thermal fuse are connected one by one with the two power connection plug blocks; Rack teeth are provided on the side surfaces of both sides of the vertical support body, and the two rack teeth are meshed with two gears fixed in the middle of the two bidirectional screws. The two bidirectional screws are relatively rotatable in the recess below the mounting base, and the two ends of the two bidirectional screws are threadedly connected to the two movable seat plates. The outer ends of the two movable seat plates are fixedly connected to three partition plates, and the six partition plates are slidably arranged in the six horizontal holes of the mounting base, and the six partition plates are plugged into the six electrical connection holes of the mounting base.

2. The electric cooker temperature sensor according to claim 1, characterized in that: The limiter includes: A pressure slide, the two pressure slides are relatively slidably arranged in the side sliding openings on both sides of the vertical support body, the outer protrusions at the outer ends of the two pressure slides can be embedded in the side clamping grooves on both sides of the vertical support body, and a tension spring is fixedly connected between the two inner protrusions at the inner ends of the two pressure slides; the upper sides of the inner ends of the two pressure slides are provided with pressure-bearing inclined surfaces; the control part comprises: a lifting and lowering pressure block slidably arranged in the vertical sliding groove of the vertical support body, the triangular pressure head at the bottom of the lifting and lowering pressure block presses between the two pressure-bearing inclined surfaces, the lifting and lowering pressure block is threadedly connected to the bottom of the control screw, the control screw is rotatably connected to the screw plate in the vertical sliding groove, the worm wheel fixed to the bottom of the control screw is meshed with the worm gear rotatably arranged on the support platform, and the top of the control wheel on the worm gear passes through the upper surface of the support platform.

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