TWM601798U - Anti-aircraft burning device of cooker - Google Patents

Abstract

This creation is an anti-air-burning device used to detect the temperature of a pot to prevent air-burning. It includes a support tube set in the furnace head, a temperature-sensing component, and an outer isolating sleeve. The temperature-sensing component includes a A temperature sensor and a spring inner sleeve are arranged inside; the outer isolating sleeve is sleeved on the periphery of the inner sleeve, and a plane volute spring is arranged inside the inner sleeve, so that the outer isolating sleeve can The inner sleeve is used as the supporting point for relatively elastic displacement; when the pot is placed on the stove head and heated, the temperature sensing component and the outer isolation sleeve are respectively elastically pressed against the bottom surface of the pot, and can cooperate with a magnetic induction switch group to detect the temperature sensing component The amount of displacement. The outer isolation sleeve can isolate the flame, so that the temperature sensor can accurately detect the temperature of the pot to prevent empty burning, and has the advantages of simplified structure, easy installation and reduced cost.

Description

Anti-aircraft burning device of cooker

This creation is a device related to the cooker to detect the temperature of the cooker to prevent empty burning. The technical content involves preventing flame and radiant heat interference through a temperature sensing component and an isolating sleeve, so that the temperature sensing component can accurately detect Knowing the temperature of the pot and being able to cooperate with a magnetic induction switch group to detect the displacement of the temperature sensing component has the advantage of simplified structure.

The known anti-air-burning device for stoves protrudes a temperature sensor on the stove head. When the user puts the pot on the stove to cook food, the temperature sensor is pressed down by the pot and elastically adheres to the pot. The bottom surface is used to detect the temperature of the bottom surface of the pot; if the temperature of the bottom surface of the pot rises above the normal temperature for cooking food, it is judged to be empty, and a signal is sent to control the stove to turn off the fire to avoid fire.

However, when the temperature sensor is in operation, it is easy to be affected by the flame and radiant heat of the burner and cause misjudgment. Therefore, the creator has developed the anti-air burning detection device for TWM566795 and CN208365591U gas stoves. The structure is fixed by a positioning piece. A spring and a second spring allow the temperature sensor and the isolating sleeve to move up and down elastically relative to the positioning member through each spring, and then the isolating sleeve isolates flames and radiant heat, so that the temperature sensor can accurately sense the temperature of the pot. However, the author found that there are still some refinements in its structure. For example, let the second spring directly press between the isolating sleeve and the temperature sensor, and let the first spring directly press between the temperature sensor and the furnace head pipeline. This saves the assembly process, or allows the temperature sensor to detect the displacement at the same time when it is displaced.

Furthermore, another known anti-air burning device such as CN202522337U stove temperature sensor is provided with a pipe at the bottom end of a temperature probe, and a wire that moves with the temperature probe and a fixed on the wire is penetrated inside the pipe. A magnet and a reed tube are provided on both sides of the tube corresponding to the magnetic resistance element. The magnetic resistance piece is located between the magnet and the reed tube on both sides of the outer side of the tube, and isolates the magnetic fields of the magnet and the reed tube from each other through the tube wall of the tube, so that the reed tube is always in an unactuated state.

When the user places the pot on the stove to cook food, the temperature probe is pressed down by the pot to drive the wire and the magnetic resistance part to move, so that the magnetic resistance part is far away from the position between the magnet and the reed tube. The reed tube then senses the magnetic force of the magnet to conduct, and the temperature sensor starts to detect the temperature of the pot.

However, in the structure of CN202522337U, because the magnetic resistance element is arranged inside the catheter, the sensing distance between the magnet and the reed tube arranged outside the catheter is limited by the diameter and wall thickness of the catheter, so that the magnet needs a larger volume. Make the reed tube feel.

Therefore, the author envisions that if the magnet and the reed tube can be sensed outside the catheter and the sensing distance between the two can be shortened, the size of the magnet will be effectively reduced, and the function of detecting the displacement of the temperature sensor will be integrated. , Simplify the overall structure to reduce the assembly process, so that the anti-aircraft burning device is more perfect.

The purpose of this creation is to provide an anti-air-burning device for detecting the temperature of the pot to prevent air-burning. When the pot is placed on the stove head and heated, the temperature-sensing component and the outer isolation sleeve of the device elastically press against the pot. It has a bottom surface and can cooperate with a magnetic induction switch group to detect the displacement of the inner sleeve. The outer isolating sleeve can isolate the flame, so that the temperature sensing component can accurately detect the temperature of the pot to prevent empty burning. It has a simplified structure and installation The advantages of ease and cost reduction.

In order to achieve the above-mentioned purpose, this creation is an anti-air-burning device for a stove, which includes a support tube arranged in the stove head, a temperature sensing assembly arranged above the support tube, and a temperature sensing assembly arranged around the temperature sensing assembly. Outer isolation sleeve, of which: The temperature sensing component includes an inner sleeve arranged around the top of the support tube, the inner sleeve has a top plate, the bottom surface of the top plate is provided with a temperature sensor for sensing the temperature, and a top abuts against the bottom surface of the top plate and the support The spring between the top surfaces of the tube, through which the inner sleeve can elastically move up and down on the top of the support tube, and the top surface of the top plate of the inner sleeve can be elastically attached to the bottom surface of an external cookware; The center of the top end of the outer isolating sleeve has an opening larger than the outer diameter of the inner sleeve, and the inner peripheral wall of the outer isolating sleeve is provided with a flat spiral spring against the outer peripheral wall of the inner sleeve. The spring enables the outer isolating sleeve to elastically move up and down with the inner sleeve as a support point, and to push up against the bottom surface of the external pot, so as to isolate the flame and radiant heat of the burner from the outer isolating sleeve.

The following further describes the implementation of each element:

In implementation, the inner wall surface of the outer isolation sleeve is provided with a positioning portion, the peripheral wall surface of the inner sleeve is provided with a positioning ring groove relative to the horizontal position of the positioning portion, and the outer ring of the planar scroll spring is fixed on the positioning portion , The inner ring is fixed on the positioning ring groove.

In implementation, a neck portion smaller than the outer diameter of the inner sleeve body is provided around the inner sleeve, so that a step-shaped difference is formed between the neck portion and the inner sleeve body, and a ring wall extends downwards around the top plate. It is fixed on the periphery of the neck, and the positioning ring groove is formed between the bottom of the ring wall and the stepped section.

In implementation, the top end of the support tube is provided with a flange, the bottom of the inner sleeve is provided with a stopper, and the stopper is located below the flange to stop the inner sleeve from moving upward, and the spring is provided in the inner sleeve Between the top surface of the top plate and the flange of the support tube.

During implementation, the bottom of the outer isolation sleeve is provided with at least one through hole that can allow cold air to enter between the outer isolation sleeve and the inner sleeve or allow moisture to escape.

In implementation, the anti-air-burning device is further provided with a set of tube assembly at the position of the support tube away from the furnace head, and a wire that can move with it extends from the bottom end of the temperature sensor, and the wire passes through the support tube and the sleeve assembly, The temperature sensor activates a magnetic induction switch group after the inner sleeve is pushed down by the external pot to drive the wire to move, where: The bushing assembly is provided with a through slot communicating with the inside and the outside, the magnetic induction switch assembly includes a magnet and a magnetic induction element fixed on both sides of the bushing assembly at both sides of the through slot, and a partition is provided on the wire to pass through the through slot However, it is located between the magnet and the magnetic induction element, and when the wire is displaced, the partition can be moved to change the magnetic field between the magnet and the magnetic induction element, so that the magnetic induction element is activated.

In implementation, the sleeve assembly includes an adapter tube connected to the support tube, and a clamping seat that can be clamped and fixed on the outside of the adapter tube; The piercing groove is composed of an elongated slot penetrating through the pipe wall of the adapter tube, and an elongated opening arranged on the clamping seat opposite to the elongated slot, and the partition plate passes through the wire The elongated slot and the elongated opening are located between the magnet and the magnetic induction element; The clamping seat is provided with a first fixing part for fixing the magnet and a second fixing part for fixing the magnetic induction element on two sides corresponding to the long opening.

In implementation, the anti-air-burning device is further provided with a set of tube assembly at the position of the support tube away from the furnace head, and a wire that can move with it extends from the bottom end of the temperature sensor, and the wire passes through the support tube and the sleeve assembly, The temperature sensor activates a magnetic induction switch group after the inner sleeve is pushed down by the external pot to drive the wire to move, where: The sleeve assembly is provided with a through slot communicating with the inside and the outside. The magnetic induction switch assembly includes a fixed element and a moving element arranged adjacent to each other. The fixed element is a magnet or magnetic induction fixed on the side of the through slot outside the sleeve assembly. The moving element is a corresponding magnetic induction element or magnet fixed on the wire and passing through the slot, and when the wire is displaced, the moving element is synchronously driven to change the magnetic field between the magnet and the magnetic induction element, thereby causing the The magnetic induction element is activated.

In implementation, the sleeve assembly includes an adapter tube connected to the support tube, and a clamping seat that can be clamped and fixed on the outside of the adapter tube, and the through slot is formed by a long gap penetrating the tube wall of the adapter tube. It is composed of a slot and an elongated opening arranged on the clamping seat opposite to the elongated slot. The moving element is fixed on the wire and passes through the elongated slot and the elongated opening; The side of the opening is provided with a third fixing part for fixing the fixing element.

In implementation, the magnetic induction element is a reed tube and/or Hall IC.

Compared with the prior art, the spring of this creation is directly elastically supported between the support tube and the temperature sensing assembly; the planar spiral spring is directly elastically supported between the outer isolation sleeve and the temperature sensing assembly, so that the outer isolation sleeve The inner sleeve of the temperature sensing component can be used as a support point to elastically move up and down, and the structure that requires additional positioning members in the known technology is omitted. It has the advantages of simplified structure, easy installation and reduced cost.

In addition, in this creation, the magnetic induction switch group is set on the outside of the connecting pipe through the clamping seat, and they can be sensed at a relatively close distance. It is no longer affected by the size of the pipe diameter as in the known technology, and the magnet can be relatively reduced. At the same time, it can detect the displacement of the temperature-sensing component to detect the type of pot, so that the function of the anti-air burning device is more perfect.

The following is based on the technical means of this creation, enumerating the implementation methods suitable for this creation, and the description with the drawings is as follows:

As shown in Figures 1 to 4, this creation is an anti-aircraft burning device for a stove, which includes a support tube 10 fixedly erected in the stove head, a temperature sensing assembly 100 arranged above the support tube 10, and a setting An outer isolation sleeve 20 around the temperature sensing assembly 100.

The top of the support tube 10 is provided with a flange 11; the temperature sensing assembly 100 includes an inner sleeve 30 arranged around the top of the support tube 10, the inner sleeve 30 has a top plate 31, and the bottom surface of the top plate 31 is provided with a A temperature sensor 32 for sensing temperature and a spring 40 abutting between the bottom surface of the top plate 31 and the flange 11 of the support tube 10. The spring 40 can make the inner sleeve 30 elastically move up and down on the top of the support tube 10.

The top center of the outer isolating sleeve 20 has an opening 21 larger than the outer diameter of the inner sleeve 30, so that the top plate 31 of the inner sleeve 30 can be elastically attached to the bottom surface of an external pot 200 around the opening 21, so that The temperature sensor 32 senses the temperature through the heat conduction of the top plate 31 of the inner sleeve 30.

The inner wall surface of the outer isolating sleeve 20 is provided with a flat spiral spring 50 that abuts against the outer wall surface of the inner sleeve 30, and the outer isolating sleeve 20 can use the inner sleeve 30 as a The supporting point is elastically displaced up and down, and is attached to the bottom surface of the external pot 200 to isolate the flame and radiant heat of the stove top from the outer isolation sleeve 20.

With the above structure, when the pot is placed on the stove head to be heated, the temperature sensing component 100 and the outer isolation sleeve 20 respectively elastically abut the bottom surface of the pot 200 to isolate the flame through the outer isolation sleeve 20, so that the temperature sensing component 100 can accurately detect the temperature of the pot to prevent empty burning.

Furthermore, the spring 40 of the present invention is directly elastically supported between the support tube 10 and the temperature sensing component 100; the planar spiral spring 50 is directly elastically supported between the outer isolation sleeve 20 and the temperature sensing component 100, allowing the outside The isolation sleeve 20 can elastically move up and down with the inner sleeve 30 of the temperature sensing assembly 100 as a supporting point, and the structure that requires additional positioning members in the known technology is omitted. It has the advantages of simplified structure, easy installation and reduced cost.

In order to facilitate the assembly of the planar scroll spring 50, the outer isolating sleeve 20 is provided with a positioning portion 22 on the inner peripheral wall surface, and a positioning ring groove 33 is provided on the peripheral wall surface of the inner sleeve 30 relative to the positioning portion 22 to allow the plane The outer ring of the scroll spring 50 is fixed on the positioning portion 22 and the inner ring is fixed on the positioning ring groove 33.

In implementation, the positioning portion 22 of the outer isolation sleeve 20 can be a positioning concave ring as shown in the second figure, or as shown in the fifth figure, the positioning portion 22 can be a plurality of clamping pieces.

When the positioning ring groove 33 of the inner sleeve 30 is implemented, a neck 301 smaller than the outer diameter of the body of the inner sleeve 30 is provided around the upper part of the inner sleeve 30, so that the neck 301 and the body of the inner sleeve 30 are formed between A step-shaped step. A ring wall 311 extending downwards from the top plate 31 is superimposed and fixed on the periphery of the neck 301, so that the body of the inner sleeve 30 and the top plate 31 are assembled between the bottom of the ring wall 311 and the step-shaped step. The positioning ring groove 33 is formed without additional processing.

As shown in the figure, the top plate 31 and the ring wall 311 cover the top and surroundings of the inner sleeve 30, which can also prevent the overflow of water during cooking or boiling from affecting the normal operation of the temperature sensor 32.

In addition, a structure that restricts the vertical movement and rotation of the inner sleeve 30 is provided between the inner sleeve 30 and the support tube 10. For example, a stop portion 34 is provided at the bottom of the inner sleeve 30, and the stop portion 34 is located below the flange 11 of the support tube 10. When the inner sleeve 30 moves, the stop portion 34 can block the inner sleeve 30 The upward displacement prevents the inner sleeve 30 from separating from the support tube 10.

Furthermore, the flange 11 of the support tube 10 is provided with a limiting portion 12 on the periphery, the inner wall surface of the inner sleeve 30 is provided with a longitudinal guide portion 35, and the inner sleeve 30 is opposite to the limiting portion through the longitudinal guide portion 35. The part 12 moves up and down, and restricts the inner sleeve 30 from rotating relative to the support tube 10 to avoid twisting of the wires provided inside.

When the outer isolating sleeve 20 is implemented, at least one through hole 23 is provided at the bottom. The through hole 23 can allow cold air to enter between the outer isolating sleeve 20 and the inner sleeve 30 to isolate high temperatures, or to allow moisture to drip from the furnace head. The through hole 23 is discharged.

As shown in the figure, the outer isolating sleeve 20 can be integrally formed, or as shown in Figure 5, a lower sleeve 24 is assembled around the lower part, and a card is provided between the outer isolating sleeve 20 and the lower sleeve 24. The holding structure facilitates the manufacture and assembly of the outer isolation sleeve 20.

As shown in the first and sixth figures, the anti-air burning device is further provided with a set of tube assembly 60 at the position of the support tube 10 away from the furnace head. The bottom end of the temperature sensor 32 extends with a wire 70 that can move with it. Pass through the support tube 10 and the sleeve assembly 60. As shown in the figure, the support tube 10 and the sleeve assembly 60 can be connected by a bend pipe, so that the sleeve assembly 60 can be horizontally arranged in the cooker.

The sleeve assembly 60 is provided with a through slot 61 communicating with the inside and the outside, and a magnetic induction switch assembly 80 on the sleeve assembly 60. The magnetic induction switch assembly 80 includes a magnet 81 and a magnet 81 and one fixed on both sides of the through slot 61 at intervals. Magnetic induction element 82.

A partition 71 is provided on the wire 70, and the partition 71 penetrates the through slot 61 and is located between the magnet 81 and the magnetic induction element 82. As shown in the figure, the trough 61 is provided on the bottom pipe wall of the horizontal sleeve assembly 60, which can prevent the moisture from the stove head from dripping through the trough 61 during cooking. In order to clearly show the placement positions of the slot 61, the magnet 81 and the magnetic induction element 82, the sixth and seventh figures are shown in an inverted direction.

As shown in Figures 7-9, when the user places an external pot on the stove to heat it, the temperature-sensing component can be pressed down and contact the bottom surface of the pot, and the wire is moved by the temperature-sensing component.

While the wire 70 is displaced, it drives the partition 71 fixed on the wire 70 to move away from the magnet 81 and the magnetic induction element 82, thereby changing the magnetic field between the magnet 81 and the magnetic induction element 82, so that the magnetic induction element 82 can sense the magnet 81 is activated, so that the temperature sensor begins to sense temperature.

When the sleeve assembly 60 is implemented, as shown in the seventh figure, it can include an adapter tube 62 that is connected to the support tube 10, and a clamping seat 63 that can be clamped and fixed on the outside of the adapter tube 62. The aforementioned sleeve assembly 60 The through slot 61 is composed of an elongated slot 611 passing through the pipe wall of the adapter pipe 62, and an elongated opening 612 arranged on the clamping seat 63 opposite to the elongated slot 611, the aforementioned partition After 71 passes through the long slot 611 and the long opening 612 from the wire 70, it is located between the magnet 81 and the magnetic induction element 82.

When the connecting pipe 62 and the clamping seat 63 are assembled, they can be locked and fixed by a screw element. Furthermore, the clamping seat 63 is protrudingly provided with a protrusion 631 extending into the elongated slot 611 of the adapter tube 62 to prevent the clamping seat 63 from deflecting relative to the adapter tube 62 after being assembled on the adapter tube 62.

In order to facilitate the installation and fixation of the magnetic induction switch assembly 80 on the clamping base 63, the clamping base 63 is provided with a first fixing portion 632 for fixing the magnet 81 and a magnetic induction element 82 on both sides corresponding to the elongated opening 612. The second fixed portion 633 is fixed, and the magnetic induction element 82 can be fixed to the second fixed portion 633 by potting and fixing.

With the setting of the clamping seat 63, the magnet 81 and the magnetic induction element 82 can be arranged outside the adapter tube 62, and can sense each other at a relatively short distance, which is no longer affected by the size of the tube diameter as in the known technology , The volume of the magnet can be reduced relatively. Furthermore, the trough 61 is provided at the bottom of the sleeve assembly 60, which can prevent the moisture from dripping from the stove head into the trough 61 during cooking, forming a simple waterproof measure.

The sleeve assembly 60 is assembled by separating the connecting tube 62 and the clamping seat 63. As shown in Figures 10 and 11, the sleeve assembly 60 can also be made of plastic, aluminum alloy or zinc alloy. forming.

As shown in the figure, the sleeve assembly 60 has a ring wall 613 protruding around the slot 61 corresponding to the magnet 81 and the magnetic induction element 82. The ring wall 613 is provided with a cover 614 for shielding the slot 61, the partition 71 passes through the through slot 61 from the wire 70 and is located in the ring wall 613 and the cover 614. In accordance with the aforementioned integrally formed structure, a water stop 64 is provided at the joint position between the sleeve assembly 60 and the support tube 10 or the elbow, which can prevent the penetration of moisture and strengthen the waterproof function.

The ring wall 613 mainly allows the partition 71 to move smoothly in the through groove 61 and prevents the partition 71 from being affected by the interference of foreign objects. The aforementioned ring wall and covering structure can also be applied to the clamping seat. For example, in the sixth figure, the clamping seat 63 has a ring wall 613 protruding around the elongated opening 612, and the partition 71 passes through the wire 70 The elongated slot 611 and the elongated opening 612 are located in the ring wall 613 after exiting.

The twelfth to fifteenth figures show another structure for starting the magnetic induction switch group. The difference from the sixth figure is that the magnetic induction switch group 80 includes a fixed element and a moving element arranged adjacent to each other, and the fixed element is a fixed element. The magnet 81 or the magnetic induction element 82 on the side of the slot 61 is corresponding to the magnetic induction element 82 or the magnet 81 fixed on the wire 70 and passing through the slot 61.

For example, in the twelfth and thirteenth figures, the magnetic induction element 82 is the fixed element, and the magnet 81 is the moving element. The magnet 81 is fixed on the wire 70 and passes through the slot 61. When the wire 70 is displaced, the magnet is synchronously driven. The magnetic induction element 82 is activated by changing the magnetic field between the magnetic induction element 82 and the magnetic induction element 82.

The fourteenth and fifteenth pictures use the magnet 81 as the fixed element and the magnetic induction element 82 as the moving element. Similarly, when the wire 70 is displaced, the magnetic induction element 82 will be synchronously driven to change the magnetic field between the magnet 81 and the magnetic induction Component 82.

In this embodiment, the sleeve assembly 60 also includes a connecting tube 62, a clamping seat 63, an elongated slot 611, and an elongated opening 612. The moving element is fixed on the wire 70 and passes through the elongated slot. The slot 611 and the elongated opening 612 are provided with a third fixing portion 634 on the side of the elongated opening 612 for fixing the fixing element.

Furthermore, the magnet 81 and the magnetic induction element 82 are also arranged outside the connecting tube 62 to achieve the purpose of sensing at a relatively close distance between each other, and to improve the disadvantage that the sensing function of the prior art is affected by the thickness of the tube wall.

When the magnetic induction element 82 is implemented, it can be a magnetic reed tube 821, or as shown in Figures 16 to 18, the magnetic induction element is a magnetic reed tube 821 and/or a Hall IC 822, and the Hall IC 822 It can detect the type of pots placed on the stove. For example, if you place a pan on the stove in the seventeenth picture, and place a wok in the eighteenth picture, the weight of the two kinds of pots will cause the temperature sensing component 100 to be pressed down differently. , The displacement amount of the magnet 81 driven by the wire 70 is different, so that the Hall IC 822 can detect the different magnetic force changes of the magnet 81 and can detect the type of pot.

Furthermore, because the Hall IC requires continuous power supply, a reed tube 821 can be installed on the Hall IC circuit during implementation. When the pot drives the magnetic sensing element 82 and/or the magnet 81 of the temperature sensing assembly 100 to move, The reed tube is activated first to turn on the circuit, and then the Hall IC detects the displacement, so that the circuit system does not need to continuously supply power to the Hall IC.

The above descriptions and drawings of the embodiments only illustrate the preferred embodiments of this creation, and are not intended to limit the scope of this creation. Anything similar or similar to the purpose, structure, device, feature, etc. of this creation should belong to The patent scope of this creation.

100: Temperature sensing components 200: foreign pots 10: Support tube 11: flange 12: Limiting part 20: Outer isolation sleeve 21: opening 22: Positioning Department 23: Through hole 24: Lower sleeve 30: inner sleeve 301: neck 31: top plate 311: Ring Wall 32: temperature sensor 33: Positioning ring groove 34: Stop 35: Longitudinal guide 40: spring 50: Planar spiral spring 60: Casing assembly 61: piercing 611: Long Slot 612: Long opening 613: Ring Wall 614: cover 62: Takeover 63: Clamping seat 631: convex column 632: first fixed part 633: second fixed part 634: third fixed part 64: Waterstop 70: Wire 71: partition 80: Magnetic induction switch group 81: Magnet 82: Magnetic induction element

Picture 1: The three-dimensional appearance of this creation. Figure 2: The structure diagram of the support tube, temperature sensing component, and outer isolation sleeve of this creation. Figure 3: A three-dimensional exploded view of the support tube, temperature sensing component, and outer isolation sleeve of this creation. Figure 4: The schematic diagram of the action of the temperature sensing component and the outer isolation sleeve of this creation being pressed down by the pot. Figure 5: A schematic view of the structure of the temperature sensing component and the outer isolation sleeve of the second embodiment. Figure 6: The inverted three-dimensional view of the casing assembly of this creation. Figure 7: A three-dimensional exploded view of the casing assembly of this creation upside down. Figure 8: A schematic diagram of the partition between the magnet and the magnetic induction element of this creation. Figure Ninth: A schematic diagram of the spacer moving away from the magnet and the magnetic induction element in this creation. Figure 10: An exploded perspective view of the sleeve assembly of the third embodiment inverted. Figure 11: A perspective exploded view of the sleeve assembly of the fourth embodiment inverted. Figure 12: A schematic view of the structure of the fifth embodiment using a magnet as a fixed element. Figure 13: A schematic diagram of the relative position of the magnet and the magnetic induction element in the fifth embodiment. Figure 14: A schematic diagram of the sixth embodiment with a magnetic induction element as a fixed element. Figure 15: A schematic diagram of the relative position of the magnet and the magnetic induction element in the sixth embodiment. Figure 16: A perspective view of the sleeve assembly of the seventh embodiment inverted. Figure 17: A schematic diagram of the displacement of the magnet when the pan is placed on the burner of the seventh embodiment. Figure 18: A schematic diagram of the displacement of the magnet when the burner is placed in the wok of the seventh embodiment.

100: Temperature sensing components

10: Support tube

11: flange

20: Outer isolation sleeve

21: opening

22: Positioning Department

23: Through hole

30: inner sleeve

301: neck

31: top plate

311: Ring Wall

32: temperature sensor

33: Positioning ring groove

34: Stop

40: spring

50: Planar spiral spring

70: Wire

Claims (10)

An anti-air-burning device for a cooker includes a support tube arranged in the burner head of the cooker, a temperature sensing assembly arranged above the support tube, and an outer isolation sleeve arranged around the temperature sensing assembly, wherein: The temperature sensing component includes an inner sleeve arranged around the top of the support tube, the inner sleeve has a top plate, the bottom surface of the top plate is provided with a temperature sensor for sensing the temperature, and a top abuts against the bottom surface of the top plate and the support The spring between the top surfaces of the tube, through which the inner sleeve can elastically move up and down on the top of the support tube, and the top surface of the top plate of the inner sleeve can be elastically attached to the bottom surface of an external cookware; The center of the top end of the outer isolating sleeve has an opening larger than the outer diameter of the inner sleeve, and the inner peripheral wall of the outer isolating sleeve is provided with a flat spiral spring against the outer peripheral wall of the inner sleeve. The spring enables the outer isolating sleeve to elastically move up and down with the inner sleeve as a support point, and to push up against the bottom surface of the external pot, so as to isolate the flame and radiant heat of the burner from the outer isolating sleeve. The anti-air-burning device of a cooker according to claim 1, wherein the inner wall surface of the outer isolation sleeve is provided with a positioning portion, and the outer wall surface of the inner sleeve is provided with a positioning ring groove in a horizontal position relative to the positioning portion, the The outer ring of the planar scroll spring is fixed on the positioning part, and the inner ring is fixed on the positioning ring groove. The anti-air-burning device for a cooker according to claim 2, wherein a neck portion smaller than the outer diameter of the inner sleeve body is provided around the upper portion of the inner sleeve, so that a step-like difference is formed between the neck portion and the inner sleeve body A ring wall extends downward around the top plate to be superimposed and fixed on the periphery of the neck, and the positioning ring groove is formed between the bottom of the ring wall and the stepped section. The anti-air-burning device for a cooker according to claim 1, wherein the top end of the support tube is provided with a flange, the bottom of the inner sleeve is provided with a stopper, and the stopper is located below the flange to stop inside The sleeve is displaced upward, and the spring is arranged between the top surface of the top plate of the inner sleeve and the flange of the support tube. The anti-air-burning device for a cooker according to claim 1, wherein the bottom of the outer isolation sleeve is provided with at least one through hole that can allow cold air to enter between the outer isolation sleeve and the inner sleeve or allow moisture to drain. The anti-air-burning device for a cooker according to claim 1, wherein the anti-air-burning device is further provided with a set of tube assembly at a position of the support tube away from the stove head, and a wire that can move with it extends from the bottom end of the temperature sensor. The wire passes through the support tube and the sleeve assembly, and the temperature sensor activates a magnetic induction switch group after the temperature sensor drives the wire to move as the inner sleeve is pressed down by the external cookware, wherein: The bushing assembly is provided with a through slot communicating with the inside and the outside, the magnetic induction switch assembly includes a magnet and a magnetic induction element fixed on both sides of the bushing assembly at both sides of the through slot, and a partition is provided on the wire to pass through the through slot However, it is located between the magnet and the magnetic induction element, and when the wire is displaced, the partition can be moved to change the magnetic field between the magnet and the magnetic induction element, so that the magnetic induction element is activated. The anti-air-burning device for a cooker according to claim 6, wherein the sleeve assembly includes an adapter tube connected to the support tube, and a clamping seat that can be clamped and fixed outside the adapter tube; The piercing groove is composed of an elongated slot penetrating through the pipe wall of the adapter tube, and an elongated opening arranged on the clamping seat opposite to the elongated slot, and the partition plate passes through the wire The elongated slot and the elongated opening are located between the magnet and the magnetic induction element; The clamping seat is provided with a first fixing part for fixing the magnet and a second fixing part for fixing the magnetic induction element on two sides corresponding to the long opening. The anti-air-burning device for a cooker according to claim 1, wherein the anti-air-burning device is further provided with a set of tube assembly at a position of the support tube away from the stove head, and a wire that can move with it extends from the bottom end of the temperature sensor. The wire passes through the support tube and the sleeve assembly, and the temperature sensor activates a magnetic induction switch group after the temperature sensor drives the wire to move as the inner sleeve is pressed down by the external cookware, wherein: The sleeve assembly is provided with a through slot communicating with the inside and the outside. The magnetic induction switch assembly includes a fixed element and a moving element arranged adjacent to each other. The fixed element is a magnet or magnetic induction fixed on the side of the through slot outside the sleeve assembly. The moving element is a corresponding magnetic induction element or magnet fixed on the wire and passing through the slot, and when the wire is displaced, the moving element is synchronously driven to change the magnetic field between the magnet and the magnetic induction element, thereby causing the The magnetic induction element is activated. The anti-air-burning device for a cooker according to claim 8, wherein the sleeve assembly includes an adapter tube connected to the support tube, and a clamping seat that can be clamped and fixed on the outside of the adapter tube, and the through slot is formed by a It is composed of an elongated slot penetrating through the pipe wall of the adapter tube and an elongated opening arranged on the clamping seat opposite to the elongated slot, the moving element is fixed on the wire and passes through the elongated slot And a long opening; the clamping seat is provided with a third fixing portion on the side of the long opening for fixing the fixing element. The anti-air-burning device for a cooktop according to any one of claims 6 to 9, wherein the magnetic induction element is a reed tube and/or a Hall IC.

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