An induction cooker with precise temperature control

Abstract

The utility model discloses a kind of electromagnetic stoves of accurate temperature control, including electromagnetic stove body, electromagnetic stove body is provided with electromagnetic stove panel, installation cavity and electromagnetic heating element, electromagnetic heating element is installed in installation cavity;Electromagnetic heating element includes coil support and electromagnetic coil, the middle part of coil support is provided with installation port, electromagnetic coil is around installation port and is set in coil support;Electromagnetic stove panel is capped in installation cavity;Temperature measuring component, including temperature measuring support and temperature detection element, temperature measuring support is installed in installation port;Temperature measuring support is provided with temperature measuring cavity and magnetic material layer, magnetic material layer is around inside temperature measuring cavity, temperature detection element is installed in temperature measuring cavity and is threaded in magnetic material layer inside.The utility model's accurate temperature control electromagnetic stove, it is set magnetic material layer in temperature measuring cavity for installing temperature detection element, for guiding the magnetic field generated in electromagnetic coil heating process to pass through, reduce the influence of magnetic field on temperature detection element in electromagnetic coil heating process.

Description

Technical Field

[0001] This utility model relates to the field of induction cooker technology, and in particular to an induction cooker with precise temperature control. Background Technology

[0002] In related technologies, induction cookers use electromagnetic coils to heat the cooktop panel. To control the temperature of the induction cooker, a temperature sensor is usually placed in the lower center of the cooktop panel to detect the heating temperature of the pot, thereby controlling the heating temperature of the induction cooker.

[0003] Since the temperature sensing device uses a metal probe for temperature detection, when the electromagnetic coil is heated, the magnetic field generated by the electromagnetic coil will pass through the metal probe. This magnetic field will also heat the metal probe. Furthermore, if the area of ​​the metal probe is large, the magnetic flux of the magnetic field generated by the electromagnetic coil passing through the metal probe will also increase. This will cause the temperature detected by the metal probe to have its own heat, resulting in inaccurate temperature detection by the temperature sensing device. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides an induction cooker with precise temperature control, which provides a magnetic material layer in the temperature measuring cavity for installing the temperature sensing element, so as to guide the magnetic field generated during the heating process of the electromagnetic coil through it, thereby reducing the influence of the magnetic field on the temperature sensing element during the heating process of the electromagnetic coil.

[0005] The technical solution adopted by this utility model to solve its problem is: An induction cooker with precise temperature control, comprising: An induction cooker body is provided with an induction cooker panel, a mounting cavity, and an electromagnetic heating element. The electromagnetic heating element is installed in the mounting cavity. The electromagnetic heating element includes a coil bracket and an electromagnetic coil. The coil bracket has a mounting opening in the middle. The electromagnetic coil is wound around the coil bracket and arranged around the mounting opening. The induction cooker panel covers the mounting cavity. A temperature measuring component includes a temperature measuring bracket and a temperature sensing element. The temperature measuring bracket is installed at the mounting port. The temperature measuring bracket is provided with a temperature measuring cavity and a magnetic material layer. The magnetic material layer surrounds the inside of the temperature measuring cavity, and the temperature sensing element is installed in the temperature measuring cavity and passes through the magnetic material layer.

[0006] As an optional implementation, the induction cooker panel is provided with a temperature measuring port corresponding to the temperature measuring cavity; the temperature detection element is provided corresponding to the temperature measuring port; the temperature detection element is installed in the temperature measuring cavity and can move along the height direction of the temperature measuring cavity to extend out of the temperature measuring port or retract from the temperature measuring port.

[0007] As an optional implementation, a positioning seat is provided inside the temperature measuring cavity, and a positioning cavity is provided inside the positioning seat. The temperature detection element is movably installed in the positioning cavity and can move up and down along the height direction of the positioning cavity.

[0008] As an optional implementation, the temperature sensing element is provided with a limiting sleeve on its exterior. The limiting sleeve is movably inserted into the positioning cavity. A first limiting part is provided inside the positioning cavity. The limiting sleeve is provided with a second limiting part and a third limiting part. The second limiting part and the third limiting part are spaced apart in the height direction of the limiting sleeve. The second limiting part is located below the first limiting part and is used to abut against the first limiting part. The third limiting part is located outside the positioning cavity and is used to abut against the top surface of the positioning seat.

[0009] As an optional implementation, the magnetic material layer is disposed inside the limiting sleeve and surrounds the outer peripheral wall of the temperature sensing element.

[0010] As an optional implementation, the magnetic material layer is disposed in the temperature measuring cavity and surrounds the outer peripheral wall of the positioning seat.

[0011] As an optional implementation, the temperature measuring port is covered with a sealing sleeve, which is made of sealant material; The sealing sleeve includes a first sealing section and a second sealing section, the second sealing section being disposed around the first sealing section; the outer peripheral wall of the second sealing section is sealed to the inner peripheral wall of the temperature measuring port; the temperature sensing element is connected to the first sealing section, and the first sealing section is used to provide an elastic force that drives the temperature sensing element to extend upward out of the temperature measuring port.

[0012] As an optional implementation, an elastic component is provided inside the temperature measuring cavity, with one end of the elastic component connected to the temperature detection element and the other end of the elastic component connected to the bottom wall of the temperature measuring cavity.

[0013] As an optional implementation, the sealing sleeve further includes a third sealing section, wherein the first sealing section is disposed at the top of the second sealing section, the third sealing section is disposed at the bottom of the second sealing section, and extends outward from the bottom of the temperature measuring port to the space between the induction cooker panel and the temperature measuring bracket. The end face of the third sealing section and / or the temperature measuring bracket is provided with multiple sealing protrusions; the multiple sealing protrusions are distributed at intervals from the inside to the outside.

[0014] As an optional implementation, the top end of the temperature sensing element extends through the first sealing section; a magnetic shielding material layer is provided at the end of the temperature sensing element extending out of the first sealing section.

[0015] In summary, this utility model has the following technical effects: The temperature sensing element is installed inside the temperature measuring cavity of the temperature measuring bracket, and a magnetic material layer is set inside the temperature measuring cavity. The magnetic material layer surrounds the inner peripheral wall of the temperature measuring cavity and is located on the outer periphery of the temperature sensing element. Then, when the electromagnetic coil is energized, the magnetic field generated by the electromagnetic coil will directly pass through the magnetic material layer outside the temperature sensing element, guiding the magnetic field to avoid the temperature sensing element, reducing the influence of the magnetic field generated by the electromagnetic coil on the temperature sensing element, and the temperature detected by the temperature sensing element is the temperature of the pot body, thus improving the temperature detection accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of the first structure of the induction cooker of this utility model; Figure 2 for Figure 1 Enlarged structural diagram of point A in the diagram; Figure 3 This is a cross-sectional view of the second structure of the induction cooker of this utility model; Figure 4 for Figure 3 Enlarged structural diagram at point B in the diagram; Figure 5 This is a schematic diagram of the structure of the induction cooker of this utility model; Figure 6 This is a schematic diagram of the assembly structure of the temperature measuring component and the electromagnetic heating element of this utility model; Figure 7 This is an exploded structural diagram of the temperature measuring component and the electromagnetic heating element of this utility model. Figure 8 This is a schematic diagram of the temperature measuring bracket of this utility model; Figure 9 This is a schematic diagram of the temperature measuring bracket of this utility model from another perspective.

[0018] The meanings of the reference numerals in the attached drawings are as follows: 10, induction cooker body; 11, mounting cavity; 20, induction cooker panel; 30, coil bracket; 40, temperature measuring bracket; 41, temperature measuring cavity; 42, positioning seat; 421, positioning cavity; 422, first limiting part; 50, temperature detection element; 51, limiting sleeve; 511, third limiting part; 512, second limiting part; 52, magnetic shielding material layer; 521, fourth sealing section; 60, magnetic material layer; 70, sealing sleeve; 71, first sealing section; 72, second sealing section; 73, third sealing section; 80, elastic component. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0023] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0024] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0025] See Figures 1-9 This utility model discloses a precision temperature-controlled induction cooker, including an induction cooker body 10 and a temperature measuring component. The induction cooker body 10 is provided with an induction cooker panel 20, a mounting cavity 11, and an electromagnetic heating element, which is installed in the mounting cavity 11. The electromagnetic heating element includes a coil support 30 and an electromagnetic coil. An installation opening is provided in the middle of the coil support 30. The electromagnetic coil is wound around the coil support 30 and arranged around the installation opening. The induction cooker panel 20 is sealed in the mounting cavity 11, so that the electromagnetic coil can generate a magnetic field for electromagnetic heating after being energized.

[0026] The specific temperature measuring components include a temperature measuring bracket 40 and a temperature detection element 50. The temperature measuring bracket 40 is installed at the mounting port. The temperature measuring bracket 40 is provided with a temperature measuring cavity 41 and a magnetic material layer 60. The magnetic material layer 60 surrounds the inside of the temperature measuring cavity 41. The temperature detection element 50 is installed in the temperature measuring cavity 41 and passes through the magnetic material layer 60.

[0027] Based on the above structure, when using the precision temperature-controlled induction cooker of this utility model, during use, by energizing the electromagnetic coil, when an iron-containing pot is placed on the induction cooker panel 20, the magnetic field generated by the electromagnetic coil passes through the bottom of the pot to heat the pot. Since a temperature sensor 50 is installed inside the temperature measuring bracket 40, this temperature sensor 50 can detect the temperature of the pot on the induction cooker panel 20, thereby achieving control over the heating temperature of the pot.

[0028] However, since the temperature detection device 50 generally uses a metal probe for temperature detection, the sensor itself or the connecting wires induce eddy currents in the alternating magnetic field. When the electromagnetic coil is energized, the generated magnetic field passes through the metal probe, which electromagnetically heats the metal probe, causing it to have a certain temperature and generate additional heat. Therefore, the temperature detected by the temperature detection device 50 is its own temperature, and not entirely the temperature of the pot body, making the detected temperature too high and resulting in inaccurate temperature detection. Thus, the temperature detection of the pot body is incorrect.

[0029] In this embodiment, the temperature detection element 50 is installed inside the temperature measuring cavity 41 of the temperature measuring bracket 40, and a magnetic material layer 60 is provided inside the temperature measuring cavity 41. The magnetic material layer 60 surrounds the inner peripheral wall of the temperature measuring cavity 41 and is located on the outer periphery of the temperature detection element 50. Then, when the electromagnetic coil is energized, the magnetic field generated by the electromagnetic coil will directly pass through the magnetic material layer 60 outside the temperature detection element 50, guiding the magnetic field to avoid the temperature detection element 50, reducing the influence of the magnetic field generated by the electromagnetic coil on the temperature detection element 50, and the temperature detected by the temperature detection element 50 is the pot body temperature, thus improving the temperature detection accuracy.

[0030] In some related implementations, the magnetic material layer 60 is a magnet structure, or an iron-containing metal sleeve, or a material layer such as permalloy or ferrite. Furthermore, the temperature sensing element 50 can be an NTC thermistor or a detection probe, as used in the prior art.

[0031] As an optional implementation, a temperature measuring port is provided on the induction cooker panel 20. The temperature measuring port is correspondingly set to the temperature measuring cavity 41. The temperature detection element 50 is installed in the temperature measuring cavity 41 and is correspondingly set to the temperature measuring port. The temperature detection element 50 can move along the height direction of the temperature measuring cavity 41 to extend out of the temperature measuring port or retract from the temperature measuring port.

[0032] Based on this structure, when performing temperature measurement, the temperature detection element 50 can move upward along the height direction of the temperature measuring cavity 41. The temperature detection element 50 can extend out of the induction cooker panel 20 from the temperature measuring port, and the temperature detection element 50 can extend out to contact the bottom of the pot for temperature detection. This avoids the influence of factors such as the panel material of the induction cooker panel 20 (such as the thermal conductivity of microcrystalline glass) and the fit between the panel and the pot on heat conduction, thus making the temperature detection more accurate.

[0033] Of course, if the temperature of the cookware is not detected, the temperature detection element 50 can be moved downward along the temperature measuring cavity 41 and retracted into the temperature measuring cavity 41 to prevent the temperature detection element 50 from protruding and causing damage to the surface of the induction cooker panel 20.

[0034] As an optional implementation, in order to guide the temperature measuring cavity 41 to be provided with a positioning seat 42, and the positioning seat 42 is provided with a positioning cavity 421, the temperature measuring element 50 is movably installed in the positioning cavity 421 and can move up and down along the height direction of the positioning cavity 421.

[0035] To facilitate the positioning and assembly of the temperature sensing element 50, the temperature sensing element 50 can be installed in the positioning cavity 421 of the temperature measuring cavity 41. Therefore, the temperature sensing element 50 can be guided by the positioning cavity 421 to achieve up and down movement. The positioning cavity 421 is set inside the temperature measuring cavity 41, and the inner diameter of the positioning cavity 421 is smaller than the inner side of the temperature measuring cavity 41, which fits more closely to the outer diameter of the temperature sensing element 50. In this way, the positioning cavity 421 can prevent the temperature sensing element 50 from swaying during the up and down movement.

[0036] As an optional implementation, a limiting sleeve 51 can be provided on the outside of the temperature sensing element 50. The limiting sleeve 51 is movably inserted into the positioning cavity 421. Specifically, a first limiting part 422 is provided in the positioning cavity 421, and the limiting sleeve 51 is provided with a second limiting part 512 and a third limiting part 511. The second limiting part 512 and the third limiting part 511 are spaced apart in the height direction of the limiting sleeve 51. The second limiting part 512 is located at the top of the limiting sleeve 51, and the third limiting part 511 is located at the bottom of the limiting sleeve 51. The second limiting part 512 and the third limiting part 511 can protrude from the outer wall of the limiting platform. The second limiting part 512 is located below the first limiting part 422 and is used to abut against the first limiting part 422. The third limiting part 511 is located outside the positioning cavity 421 and is used to abut against the top surface of the positioning seat 42.

[0037] When assembling the temperature sensing element 50, the temperature sensing element 50 can be inserted into the limiting sleeve 51. The bottom end of the limiting sleeve 51 can be inserted into the positioning cavity 421. To facilitate the insertion of the third limiting part 511 at the bottom end of the limiting sleeve 51 into the positioning cavity 421 and to allow it to pass over the first limiting part 422 and be located below the first limiting part 422, a notch can be provided on the side wall of the positioning cavity 421 or on the first limiting part 422. When the limiting sleeve 51 is inserted, the third limiting part 511 can first... The corresponding notch passes through to the lower part of the first limiting part 422, and then the limiting sleeve 51 is rotated so that the third limiting part 511 corresponds to the lower part of the first limiting part 422. In this way, the limiting sleeve 51 moves up and down, and when it moves upward, the third limiting part 511 abuts against the first limiting part 422, limiting the upward movement of the limiting sleeve 51. This can prevent the temperature sensing element 50 from disengaging from the temperature measuring cavity 41 after moving upward, and limit the height of the temperature sensing element 50 extending to the induction cooker panel 20.

[0038] If the temperature sensor 50 extends too far from the temperature measuring port, it will protrude excessively from the induction cooker panel 20 and may be scratched when the cookware moves. Therefore, the third limiting part 511 at the bottom of the limiting sleeve 51 can abut against the first limiting part 422 to limit the upward stroke of the temperature sensor 50. This ensures that the extension height of the temperature sensor 50 is maintained at a height that allows it to extend beyond the temperature measuring port without protruding too far.

[0039] Specifically in this embodiment, after the third limiting part 511 of the limiting sleeve 51 abuts against the first limiting part 422 of the positioning cavity 421, the temperature detection element 50 can maintain a height of 2-3mm protruding from the induction cooker panel 20 after extending to the temperature measuring port. It should also be noted that the first limiting part 422, the second limiting part 512 and the third limiting part 511 can all be selected as protruding step structure, protruding rib structure or protruding hook structure, etc.

[0040] See Figure 1 as well as Figure 2 As an optional implementation, the magnetic material layer 60 is disposed within the limiting sleeve 51 and surrounds the outer peripheral wall of the temperature sensing element 50. With the positioning seat 42 and the limiting sleeve 51 provided, the temperature sensing element 50 is disposed within the limiting sleeve 51. In this case, the magnetic material layer 60 can surround the outside of the temperature sensing element 50 and be disposed inside the limiting sleeve 51. This position of the magnetic material layer 60 is closer to the temperature sensing element 50. When the electromagnetic coil is energized to generate a magnetic field, the magnetic material layer 60 can guide the magnetic field at a position closer to the temperature sensing element 50. That is, the magnetic material layer 60 is in close contact with the temperature sensing element 50 (such as an NTC thermistor or sensor housing) without any obvious gaps.

[0041] Since the shielding principle of the magnetic material layer 60 is generally to "absorb" or "guide" the alternating magnetic field through high magnetic permeability, thereby reducing the magnetic field penetration into the interior of the detection device, the gap between the magnetic material layer 60 and the temperature detection device 50 is small. This reduces the air gap between the magnetic material layer 60 and the temperature detection device 50. Moreover, the extremely low magnetic permeability of air weakens the shielding effect. In this way, the magnetic field generated by the electromagnetic coil is more directly captured by the magnetic material, resulting in higher shielding efficiency. Consequently, the magnetic field affecting the temperature detection device 50 is less, and the detection accuracy of the temperature detection device 50 is higher.

[0042] Furthermore, if the magnetic material layer 60 is made of iron-containing material with a certain rigidity, it can also play a fixing role when placed close to the temperature detection element 50, reducing the displacement or loosening of the temperature detection element 50 caused by vibration (such as pots hitting the stove surface), and indirectly ensuring the stability of the temperature detection element 50.

[0043] See Figure 3 as well as Figure 4The magnetic material layer 60 is disposed in the temperature measuring cavity 41 and surrounds the outer peripheral wall of the positioning seat 42. With the positioning seat 42 provided, since the magnetic material layer 60 is disposed in the outer peripheral wall of the positioning seat 42 and the temperature detection element 50 is disposed in the positioning cavity 421 of the positioning seat 42, there is a gap between the magnetic material layer 60 and the temperature detection element 50, which is separated by the positioning seat 42. Since the magnetic material layer 60 generates heat after absorbing magnetic field energy, if it directly contacts the temperature detection element 50, it may affect the temperature detection element 50 through heat conduction, causing the temperature detection element 50 to produce errors. Therefore, the positioning seat 42 is used to separate the magnetic material layer 60 and the temperature detection element 50 to reduce this heat conduction interference, allowing the temperature detection element 50 to focus more on sensing the heat conducted by the cookware.

[0044] As an optional implementation, based on the structure of providing a temperature measuring port on the induction cooker panel 20, since the induction cooker panel 20 is easily contaminated with oil, water droplets, etc. after the cookware is placed on it, the oil, water droplets, etc. can easily enter the temperature detection element 50 through the temperature measuring port, affecting the detection accuracy of the temperature detection element 50.

[0045] Therefore, a sealing sleeve 70 can be provided to cover the temperature measuring port. Specifically, the sealing sleeve 70 includes a first sealing section 71 and a second sealing section 72, and the second sealing section 72 is arranged around the first sealing section 71. The outer peripheral wall of the second sealing section 72 is sealed and fitted with the inner peripheral wall of the temperature measuring port; the temperature detection element 50 is connected to the first sealing section 71.

[0046] The sealing sleeve 70 can be made of a sealant material used in related technologies, such as silicone or rubber, which have certain elastic properties. In this way, both the first sealing section 71 and the second sealing section 72 of the density sleeve have certain elastic properties. The temperature sensing element 50 is connected to the first sealing section 71 and can maintain the elastic force of extending the temperature measuring port upward under the action of the elastic force provided by the first sealing section 71.

[0047] Thus, the sealing sleeve 70 can cover the temperature measuring port, the first sealing section 71 of the sealing sleeve 70 can cover the top of the temperature measuring port, and the second sealing section 72 of the sealing sleeve 70 can surround the inner peripheral wall of the temperature measuring port, sealing the temperature measuring port in the circumferential direction. The temperature measuring port of the induction cooker panel 20 can be sealed by the first sealing section 71 and the second sealing section 72 at the top and in the circumferential direction, reducing the impact of oil stains, water droplets, etc., entering the temperature measuring cavity 41 through the temperature measuring port on the temperature measuring element 50. Therefore, the temperature measuring element 50 has high detection accuracy and a longer service life.

[0048] It should also be emphasized that, since the temperature sensing element 50 is connected to the first sealing section 71, it can maintain its upward extension of the temperature measuring port under the elastic force of the first sealing section 71. After the cookware is placed on the induction cooker panel 20, the cookware can rest against the first sealing section 71, and the first sealing section 71 is subjected to downward force. In this way, the temperature sensing element 50 can also move downward simultaneously. At the same time, the first sealing section 71 can maintain its rebound state under its own elastic force, so that the temperature sensing element 50 is kept in an upward and close-fitting state with the cookware by the elastic force of the first sealing section 71. Therefore, the temperature sensing element 50 is always in contact with the cookware during detection, so the detected temperature is more accurate.

[0049] In addition, the temperature detection element 50 is sealed by the first sealing section 71, so that even when the detection is performed in contact with the cookware, oil stains, water droplets and the like can be isolated from the temperature detection element 50 by the first sealing section 71.

[0050] As an optional implementation, an elastic member 80 may also be provided in the temperature measuring cavity 41, with one end of the elastic member 80 connected to the temperature detection element 50 and the other end of the elastic member 80 connected to the bottom wall of the temperature measuring cavity 41.

[0051] Since the density sleeve is made of sealant, such as silicone or rubber, but silicone or rubber is prone to aging, the elasticity of the first sealing section 71 is prone to failure after long-term use. Therefore, an elastic component 80 is further provided to provide elastic stress to drive the temperature detection element 50 to move. The elastic stress provided by the elastic component 80 can be superimposed on the elastic force of the first sealing section 71, assisting the first sealing section 71 in supporting the temperature detection element 50, so that the temperature detection element 50 can always maintain an upward contact with the pot during use. Even after the first sealing section 71 fails after long-term use, it can still maintain upward support and contact. The temperature detection element 50 can still maintain a tight contact state for detection after long-term use, and the detection accuracy is high.

[0052] As an optional implementation, the sealing sleeve 70 further includes a third sealing section 73. The first sealing section 71 is located at the top of the second sealing section 72, and the third sealing section 73 is located at the bottom of the second sealing section 72. It extends outward from the bottom of the temperature measuring port to the space between the induction cooker panel 20 and the temperature measuring bracket 40. Based on this structure, when the sealing sleeve 70 seals the temperature measuring port, the first sealing section 71 can seal at the top of the temperature measuring port, while the second sealing section 72 measures the temperature in the circumferential direction of the temperature measuring port. The bottom of the sealing sleeve 70 can be positioned between the induction cooker panel 20 and the temperature measuring bracket 40 by the outwardly extending third sealing section 73. Even if oil stains, water droplets, etc., flow downward through the gap between the second sealing section 72 and the temperature measuring port to the bottom of the induction cooker panel 20, the third sealing section 73 is still held between the assembly gap between the temperature measuring bracket 40 and the induction cooker panel 20 to seal, thereby improving the sealing effect.

[0053] Furthermore, multiple sealing protrusions can be provided on the third sealing section 73, and the multiple sealing protrusions are spaced apart from the inside to the outside. So even if oil stains or water droplets enter the position of the third sealing section 73, they can be blocked layer by layer by the multiple sealing protrusions, resulting in a better sealing effect.

[0054] Alternatively, when the third sealing section 73 is clamped between the induction cooker panel 20 and the temperature measuring bracket 40, multiple sealing protrusions of the temperature measuring bracket 40 can also press on the third sealing section 73, so that multiple groove structures that cooperate with the sealing protrusions are squeezed on the third sealing section 73, thus achieving layer-by-layer sealing from the inside out.

[0055] Alternatively, multiple sealing protrusions can be provided on the end faces of both the third sealing section 73 and the temperature measuring bracket 40. The multiple sealing protrusions are distributed at intervals from the inside to the outside, and the multiple sealing protrusions on the third sealing section 73 and the multiple sealing protrusions on the temperature measuring bracket 40 are matched at intervals from top to bottom. In this way, more layers of seal can be formed from the inside to the outside when sealing is performed, resulting in a better sealing effect.

[0056] As an optional implementation, the top of the temperature sensing element 50 extends through the first sealing section 71; a magnetic shielding material layer 52, such as a ceramic material layer, is provided at the end of the temperature sensing element 50 extending from the first sealing section 71. In the case of an NTC thermistor, the magnetic shielding material layer 52 can be fitted over the metal probe of the thermistor. This further shields the magnetic field from affecting the temperature detection position by providing a magnetic shielding material on the outside of the temperature sensing element 50, resulting in higher detection accuracy.

[0057] Of course, when the magnetic shielding material layer 52 is provided, a fourth sealing section 521 can be further provided at the bottom end of the first sealing section 71 and fitted outside the magnetic shielding material layer 52 to prevent oil stains, water droplets and the like from entering the temperature detection element 50 through the assembly gap between the magnetic shielding material layer 52 and the first sealing section 71, so as to achieve a better sealing effect.

[0058] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An induction cooker with precise temperature control, characterized in that, include, An induction cooker body is provided with an induction cooker panel, a mounting cavity, and an electromagnetic heating element. The electromagnetic heating element is installed in the mounting cavity. The electromagnetic heating element includes a coil bracket and an electromagnetic coil. The coil bracket has a mounting opening in the middle. The electromagnetic coil is wound around the coil bracket and arranged around the mounting opening. The induction cooker panel covers the mounting cavity. A temperature measuring component includes a temperature measuring bracket and a temperature sensing element. The temperature measuring bracket is installed at the mounting port. The temperature measuring bracket is provided with a temperature measuring cavity and a magnetic material layer. The magnetic material layer surrounds the inside of the temperature measuring cavity, and the temperature sensing element is installed in the temperature measuring cavity and passes through the magnetic material layer.

2. The induction cooker with precise temperature control according to claim 1, characterized in that, The induction cooker panel is provided with a temperature measuring port corresponding to the temperature measuring cavity; the temperature detection element is provided corresponding to the temperature measuring port; the temperature detection element is installed in the temperature measuring cavity and can move along the height direction of the temperature measuring cavity to extend out of the temperature measuring port or retract from the temperature measuring port.

3. The induction cooker with precise temperature control according to claim 2, characterized in that, The temperature measuring cavity is provided with a positioning seat, and the positioning seat is provided with a positioning cavity. The temperature detection element is movably installed in the positioning cavity and can move up and down along the height direction of the positioning cavity.

4. The induction cooker with precise temperature control according to claim 3, characterized in that, The temperature sensing element is provided with a limiting sleeve on its exterior. The limiting sleeve is movably inserted into the positioning cavity. A first limiting part is provided inside the positioning cavity. The limiting sleeve is provided with a second limiting part and a third limiting part. The second limiting part and the third limiting part are spaced apart in the height direction of the limiting sleeve. The second limiting part is located below the first limiting part and is used to abut against the first limiting part. The third limiting part is located outside the positioning cavity and is used to abut against the top surface of the positioning seat.

5. The induction cooker with precise temperature control according to claim 4, characterized in that, The magnetic material layer is disposed inside the limiting sleeve and surrounds the outer peripheral wall of the temperature sensing element.

6. The induction cooker with precise temperature control according to claim 3, characterized in that, The magnetic material layer is disposed in the temperature measuring cavity and surrounds the outer peripheral wall of the positioning seat.

7. The induction cooker with precise temperature control according to any one of claims 2-6, characterized in that, The temperature measuring port is covered with a sealing sleeve, which is made of sealant material. The sealing sleeve includes a first sealing section and a second sealing section, the second sealing section being disposed around the first sealing section; the outer peripheral wall of the second sealing section is sealed to the inner peripheral wall of the temperature measuring port; the temperature sensing element is connected to the first sealing section, and the first sealing section is used to provide an elastic force that drives the temperature sensing element to extend upward out of the temperature measuring port.

8. The induction cooker with precise temperature control according to claim 7, characterized in that, An elastic component is provided inside the temperature measuring cavity. One end of the elastic component is connected to the temperature detection element, and the other end of the elastic component is connected to the bottom wall of the temperature measuring cavity. The elastic component is used to provide an elastic stress that drives the temperature detection element to move upward.

9. The induction cooker with precise temperature control according to claim 7, characterized in that, The sealing sleeve also includes a third sealing section. The first sealing section is located at the top of the second sealing section, and the third sealing section is located at the bottom of the second sealing section, extending outward from the bottom of the temperature measuring port to the space between the induction cooker panel and the temperature measuring bracket. The end face of the third sealing section and / or the temperature measuring bracket is provided with multiple sealing protrusions; the multiple sealing protrusions are distributed at intervals from the inside to the outside.

10. The induction cooker with precise temperature control according to claim 7, characterized in that, The top of the temperature sensing element extends through the first sealing section; a magnetic shielding material layer is provided at the end of the temperature sensing element extending out of the first sealing section.

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