WO2023178812A1 - Coil disc, cookware lid assembly and cooking utensil - Google Patents

Abstract

A coil disc (30), a cookware lid assembly (20), and a cooking utensil (1). The coil disc (30) is provided with a middle region (31), an edge region (32), and a connection region (33) located between the middle region (31) and the edge region (32), the magnetic field intensity of the coil disc (30) at any one of the middle region (31) and the edge region (32) being greater than the magnetic field intensity at the connection region (33). The coil disc (30) is combined with a heating apparatus (40) at the bottom of a cooking cavity (110), so that a three-dimensional cyclic heating environment can be formed in the cooking cavity (110), ensuring that food in the cooking cavity (110) is uniformly heated; heating in a large region and relatively uniform heat conduction can be formed; the magnetic field intensities at the middle region (31) and at the edge region (32) are relatively higher, which helps to increase the temperature of the middle region (31) and the edge region (32) more immediately and quickly when steam in the cooking cavity (110) rises to form condensate water, thereby helping to more quickly and highly efficiently dissipate much condensate water accumulated at the middle region (31) and the edge region (32), and preventing the condensate water from falling back into the cooking cavity (110) to affect the taste of the food.

Description

Coil trays, lid assemblies and cooking utensils

This application claims priority to the Chinese patent application with application number 202210309676.3 filed on March 25, 2022, the entire content of which is incorporated into this application by reference.

Technical field

The present application relates to the technical field of cooking utensils, and specifically relates to a coil plate, a pot cover assembly and a cooking utensil.

Background technique

The bottom of cooking utensils such as traditional rice cookers is heated using a heating plate or IH wire plate, so that the heat generated is mostly concentrated at the bottom. During the cooking process, especially when the inner pot is relatively full of food, it is easy to cause uneven heating of the food, resulting in the problem of uncooked food, or even the bottom of the pan being burnt, but the upper layer of the food is still uncooked.

technical problem

The main purpose of this application is to propose a pot cover assembly and a cooking utensil, aiming to solve the problem of uneven heating of the pot body in traditional cooking utensils.

Technical solutions

In order to achieve the above object, this application proposes a coil disk, which is formed with a central region, an edge region, and a connection region located between the middle region and the edge region;

Wherein, the magnetic field strength of the coil disk at either the middle region or the edge region is greater than the magnetic field strength at the connection region.

In one embodiment, the coil disk includes a disk base and a coil winding wound on the disk base;

The coil winding is wound at least in the middle region and the edge region.

In one embodiment, the winding area of the coil winding at either the middle region or the edge region is larger than the winding area of the coil winding at the connection region.

In one embodiment, the number of winding layers of the coil winding at either the middle region or the edge region is greater than the number of winding layers of the coil winding at the connection region.

In one embodiment, the coil windings include a first coil wound in the middle region, a second coil wound in the edge region, and a third coil wound in the connection region;

The magnetic field intensity of any one of the first coil and the second coil is greater than the magnetic field intensity of the third coil.

In one embodiment, the coil windings are wound on the disk base in a staggered manner in the connection area.

In one embodiment, the coil winding includes a first coil wound in the middle region, and the number of winding layers of the first coil is not less than 2;

The maximum diameter of the edge area is D, and the maximum diameter of the middle area is not greater than 0.25D.

In one embodiment, the coil winding includes a second coil wound in the edge area, and the number of winding layers of the second coil is not less than 2;

The maximum diameter of the edge area is D, and the minimum diameter of the edge area is not less than 0.7D.

In one embodiment, the plate base is provided with a through hole along its thickness direction, and the through hole is used to connect the inner and outer sides of the cooking cavity of the cooking utensil;

The coil windings are arranged staggered at the through holes.

In one embodiment, the plate base is provided with a through hole along its thickness direction, and the through hole is used to connect the inner and outer sides of the cooking cavity of the cooking utensil;

The through hole is provided at the connection area.

In one embodiment, the plate base is provided with a mounting slot near its center, and the mounting slot is used for installing the thermometer of the cooking appliance;

The coil windings are wound sequentially along the periphery of the mounting slot.

In addition, to achieve the above purpose, this application also provides a pot cover assembly, including:

The pot lid body includes a cover plate located on one side of the pot lid body; and,

Coil plate, the coil plate is arranged in the main body of the pot cover, and is used to heat the cover plate when the power is energized. The coil plate is used to be arranged on the pot lid assembly of the cooking utensil. The coil plate A central region, an edge region, and a connecting region between the central region and the edge region are formed; the magnetic field intensity of the coil disk at either of the central region and the edge region is greater than that at the edge region. Magnetic field strength at the connection area.

In one embodiment, the pot cover body includes a cover body and a partition plate, the cover body, the partition plate and the cover plate are arranged in sequence, and the coil disk is limited between the cover body and the partition plate. between boards;

The partition plate is provided with a visible structure corresponding to the coil disk, and the cover plate is detachably connected to the partition plate.

In addition, to achieve the above purpose, this application also provides a cooking appliance, including:

The cooking base has a cavity with an opening at one end;

The pot lid assembly is releasably disposed on the open end of the cooking seat to form a cooking cavity together with the cooking seat. The pot lid assembly includes a pot lid body and a coil plate. The pot lid main body includes a cover plate provided on one side of the pot lid main body; the coil disk is provided in the pot lid main body and is used to heat the cover plate when power is supplied. The coil disk A central region, an edge region, and a connecting region between the central region and the edge region are formed; the magnetic field intensity of the coil disk at either of the central region and the edge region is greater than that at the edge region. The magnetic field strength at the connection area; and,

A heating device is provided on the cooking seat and used to heat the cooking cavity.

In one embodiment, the heating device is an electromagnetic heating device.

beneficial effects

In the technical solution provided by this application, by arranging a coil disk on the pot lid assembly, the coil disk can heat the pot lid assembly, especially the cover plate, when the power is energized, thereby heating the top of the cooking cavity, combined with the bottom of the cooking cavity. The installed heating device can form bottom-up and top-down heat flow paths in the cooking cavity, creating a three-dimensional circulating heating environment to ensure even heating of food in the cooking cavity, helping to improve the cooking effect; the coil plate uses electromagnetic Heating mode operation, compared with resistance wire and other heating methods, can form a larger area to be heated and more uniform heat conduction, which helps to evenly heat the top of the cooking cavity; the magnetic intensity in the middle area and edge area is enhanced, which has When the steam rises in the cooking cavity and forms condensation water, it helps to increase the temperature of the central area and edge area more immediately and quickly, and helps to dissipate more condensation water accumulated in the middle area and edge area more quickly and efficiently, avoiding the Condensed water falls back into the cooking cavity and affects the taste of food.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a schematic perspective view of an embodiment of the cooking appliance provided by the present application;

Figure 2 is an exploded schematic diagram of the cooking seat and pot lid assembly of the cooking appliance in Figure 1;

Figure 3 is an exploded schematic diagram of the pot cover assembly in Figure 1;

Figure 4 is an exploded schematic view of the cooking seat in Figure 1;

Figure 5 is an exploded schematic diagram of the coil disk in Figure 1;

Figure 6 is a schematic diagram of the assembly of the coil disk in Figure 1;

Figure 7 is a schematic longitudinal section of the coil disk in Figure 1;

Figure 8 is an enlarged structural schematic diagram of position A in Figure 1;

Figure 9 is a schematic structural diagram of the heating area where the coil disk acts on the cover plate in Figure 1.

Explanation of reference numbers:

label	name	label	name
1	cooking utensils	217	steam valve components
10	cooking seat	218	Mounting slot
110	cooking chamber	220	thermometer
111	open end	230	Electronic control components
120	Pot body	30	coil disk
130	control device	31	central region
140	Temperature measurement component	32	edge area
20	Pot lid assembly	33	connection area
210	Pot lid body	310	tray seat
211	cover body	320	coil winding
212	shielding plate	321	first coil
213	Partition	322	second coil
214	Mounting brackets	330	Winding bracket
215	Cover plate	40	heating equipment
216	Through hole	​	​

The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

Embodiments of the invention

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that if there are directional instructions (such as up, down, left, right, front, back...) in the embodiments of the present application, the directional instructions are only used to explain the position of a certain posture (as shown in the drawings). (display) relative positional relationship, movement, etc. between the components. If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving “first”, “second”, etc. in the embodiments of this application, the descriptions of “first”, “second”, etc. are only for descriptive purposes and shall not be understood as indications or implications. Its relative importance or implicit indication of the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the meaning of "and/or" appearing in the entire text includes three parallel solutions. Taking "A and/or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions in various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist. , nor is it within the scope of protection required by this application.

In order to solve the above problems, the present application provides a coil plate. The coil plate is used in a pot lid assembly. The pot lid assembly is used in cooking utensils. The cooking utensils can be but are not limited to rice cookers, pressure cookers, food cookers, etc. Food processor, etc. Please refer to FIGS. 1 to 9 , which show specific embodiments of the coil plate provided by the present application used in cooking utensils.

Referring to FIGS. 1 to 4 , the coil plate 30 provided by the present application is used to be disposed on the pot cover assembly 20 of the cooking utensil 1 . The coil plate 30 is formed with a middle region 31 , an edge region 32 and a central region 32 located in the middle region. The connection area 33 between the area 31 and the edge area 32; wherein the magnetic field intensity of the coil disk 30 at either the middle area 31 or the edge area 32 is greater than at the connection area 33 the magnetic field strength.

In the technical solution provided by this application, the coil disk 30 is provided on the pot lid assembly 20, so that the coil disk 30 can heat the pot lid assembly 20, especially the cover plate 215, when power is supplied, thereby heating the top of the cooking cavity 110. , combined with the heating device 40 provided at the bottom of the cooking cavity 110, a bottom-up and top-down heat flow path can be formed in the cooking cavity 110, and a three-dimensional circulating heating environment can be constructed to ensure uniform heating of the food in the cooking cavity 110. Helps to improve the cooking effect; the coil plate 30 operates in an electromagnetic heating mode. Compared with heating methods such as resistance wires, it can form a larger area to be heated and more uniform heat conduction, which helps to evenly heat the top of the cooking cavity 110; The enhanced magnetic field strength in the middle region 31 and the edge region 32 helps to increase the temperature of the middle region 31 and the edge region 32 more immediately and quickly when the steam rises in the cooking cavity 110 to form condensation water, which helps to more quickly and efficiently Dissipate the condensed water accumulated in the middle area 31 and the edge area 32 to prevent the condensed water from falling back into the cooking cavity 110 and affecting the taste of the food, and effectively solve the problem of the condensed water generated at the cover 215 falling back into the food in the cooking cavity 110 during the cooking process ( For example, rice), causing the rice to drip white or become uncooked, affecting the food and taste; at the same time, it also effectively prevents the condensed water generated at the cover 215 from falling on the rice and dripping during the opening process of the pot cover assembly 20 On the cooking seat 10, it contaminates the cooking seat 10 or penetrates into the interior of the cooking seat 10, causing damage to the electronic control devices in the cooking seat 10.

In view of the above, the coil disk 30 described in the present application is used in the pot cover assembly 20 . Therefore, the present application provides a pot lid assembly 20. The pot lid assembly 20 includes a pot lid main body 210 and the coil plate 30 as described above. The pot lid main body 210 includes a pot lid body 210. The coil disk 30 is disposed in the pot cover body 210 and is used to heat the cover 215 when power is supplied.

In addition, the pot cover assembly 20 described in the present application is used in the cooking appliance 1 . Therefore, the present application also provides a cooking utensil 1, which includes a cooking base 10, a pot cover assembly 20 and a heating device 40.

Wherein, the cooking seat 10 generally includes a casing, which can be set to any suitable shape, size, and material according to actual needs, such as being roughly cylindrical, prism-shaped, or spherical; The finished material can be set to metal material or plastic material, etc.

The cooking seat 10 has a cavity with an opening at one end. It can be understood that the casing can directly define the cavity; or, the cooking stand 10 includes a casing and a pot body 120, the casing defines an installation cavity, and the pot body 120 is installed in the installation cavity. within the cavity and defining the cavity.

The pot cover assembly 20 is releasably disposed on the open end 111 of the cooking base 10 to form a cooking cavity 110 together with the cooking base 10 . It can be understood that the pot cover assembly 20 can be opened and closed on the cooking base 10 in any suitable movable form. For example, one side edge of the pot lid assembly 20 is rotatably mounted on the open end 111 of the cooking base 10 so that the pot lid assembly 20 can be flipped around the side edge to open and close the opening of the cavity. Alternatively, the middle part of the pot lid assembly 20 can be rotatably mounted on the open end 111 of the cooking base 10 through a rotating shaft, so that the pot lid assembly 20 can rotate around the rotating shaft to open and close the opening of the cavity. Alternatively, the pot cover assembly 20 can move in translation relative to the open end 111 of the cooking base 10 , specifically through sliding translation or rolling translation, to achieve the purpose of opening and closing the opening of the cavity.

When the pot lid assembly 20 moves to close the cavity, that is, when the opening is closed, the pot lid assembly 20 seals with at least the open end 111 of the cooking seat 10 and together form a substantially closed enclosure. The cooking cavity 110 (for example, a steam escape hole may be reserved).

This design places no restrictions on the orientation of the opening end 111 of the cooking seat 10. Therefore, when the cooking seat 10 is fixed on any platform, the pot cover assembly 20 can be placed on the cooking surface according to actual needs. Any side of the base 10 is, for example, provided on the top side, any side or even the bottom side of the cooking base 10 . However, for ease of understanding, in the following embodiments, the cooking utensil 1 is installed in the up and down direction, that is, in the vertical direction, and the cooking seat 10 and the pot cover assembly 20 are arranged in sequence from bottom to top. Take the opening facing upward as an example for explanation.

Based on this, the heating device 40 is provided on the cooking seat 10 and is used to heat the bottom of the cooking cavity 110 . The heating device 40 is the main heating unit of the cooking appliance 1 and mainly heats the bottom of the cooking cavity 110 . During design, the heating device 40 can be disposed at the bottom of the cooking seat 10 so that the heating device 40 is closer to the bottom of the cooking cavity 110 , which contributes to the energy of the heating device 40 under the same heat supply. The structure of the whole machine is reduced and simplified, and the center of gravity of the whole machine is lowered, which is more conducive to the stability of the whole machine. Of course, in other embodiments, the heating device 40 can also be disposed on any side of the lower area of the cooking seat 10 to conduct heat to the bottom of the cooking cavity 110 . In addition, in addition to heating the bottom of the cooking cavity 110, the heating device 40 can also heat the sides of the lower area of the cooking cavity 110. For example, the heating surface of the heating device 30 is set to be suitable for the bottom of the pot body 120. The concave shape enables heating of the bottom of the pot body 120 and the sides of the lower area.

In specific applications, the specific form of the heating device 40 is not limited and can be any suitable heating method, such as resistance heating such as electric heating sheets or electric heating coils, electromagnetic induction heating, far infrared heating, and gas heating. In this embodiment, the heating device 40 is an electromagnetic heating device, that is, a device that mainly uses the principle of electromagnetic induction for heating.

Of course, for the good operation of the heating device 40 and the cooking utensil 1, the cooking utensil 1 generally also includes a control device 130. The control device 130 is generally provided on the cooking seat 10 and can be connected with the The heating device 40 is electrically connected to provide power and required control signals for the heating device 40 . The control device 130 can be used as the main control system of the cooking appliance 1, which is a mature technology and will not be described in detail.

In addition, the cooking appliance 1 may further include a temperature measuring component 140 , which is disposed at the bottom of the cooking seat 10 and used to measure the temperature of the bottom of the cooking cavity 110 . The temperature measurement component 140 is electrically connected to the control device 130 so that the control device 130 can adjust the working parameters of the heating device 40 according to the working status and measurement data of the temperature measurement component 140 . The temperature measurement component 140 is also an existing technology and will not be described again.

The pot cover body 210 in this design is generally in the shape of a block or a plate with a certain thickness that matches the shape, size, and material of the cooking seat 10 . The pot cover body 210 has a bottom side facing the open end 111 of the cooking base 10 and a top side facing away from the open end 111 of the cooking base 10 . The cover plate 215 is formed on the bottom side of the pot cover body 210 and is disposed toward the open end 111 . When the open end 111 is closed, the cover plate 215 and the cavity of the cooking base 10 are enclosed together to form the entire structure. The cooking cavity 110.

The coil disk 30 may include a disk base 310 and a coil winding 320 wound on the disk base 310 . When the coil disk 30 is in operation, it can at least heat the cover plate 215 . It can be understood that the cover plate 215 is made of a thermally conductive material, such as a metal material.

In specific applications, the cover 215 may be a flat plate-like structure that matches the shape and size of the opening so as to exactly cover the opening; of course, in other embodiments, the At least one side of the cover plate 215 facing the opening may be configured in an arc shape with a certain curvature. For example, from the edge of the cover plate 215 to the center of the cover plate 215, it gradually protrudes toward the cooking seat 10 , or extends from the cover plate 215 to the center of the cover plate 215 . The edge of 215 to the center of the cover plate 215 extends in a concave direction gradually away from the cooking seat 10; or, the cover plate 215 as a whole can be arranged in a concave shape, with a plate-shaped body and a plate-shaped body gradually moving toward the cooking seat from the periphery of the plate-shaped body The peripheral side wall protrudes in the direction of 10. In this way, the coil disk 30 can be provided only corresponding to the plate-shaped body, or corresponding to the plate-shaped main body and the peripheral side wall respectively, so that when the coil disk 30 When 30 is working, heat can directly act on the plate-shaped body and directly or indirectly act on the peripheral side wall to achieve three-dimensional heating of the upper area of the cooking cavity 110 .

The pot cover body 210 generally also includes a cover body 211, which is provided on the side of the cover plate 215 facing away from the cooking seat 10. The cover body 211, the coil plate 30 and the The cover plates 215 are stacked in sequence, and the cover body 211 and the cover plate 215 jointly limit the coil disk 30 . The cover body 211 can be arranged in a plate shape and directly opposite to the cover plate 215 . Alternatively, the lower end of the cover body 211 is recessed with an accommodating groove, and the accommodating groove accommodates the coil disk 30 and the cover plate 215, so that the pot lid assembly 20 has a compact structure and is more aesthetically pleasing.

Next, the pot cover body 210 may further include a partition 213 disposed between the cover plate 215 and the cover body 211 . The partition 213 and the cover 211 jointly clamp and limit the coil disk 30 . It should be noted that when the cover 211 is specifically designed with the above-mentioned accommodating groove, the area between the cover plate 215 and the cover 211 refers to the area between the bottom of the accommodating groove and the The area between the cover plates 215.

The partition 213 is connected to the cover 211 . Specifically, the partition 213 can be directly connected to the cover 211, for example, installed on the side of the accommodating tank by welding, screwing, snapping, adhesion or adsorption. on the tank wall. Alternatively, the pot cover body 210 may further include a mounting bracket 214 for mounting the partition 213 and connected to the cover 211 . Specifically, please refer to FIGS. 1 to 4 . The mounting bracket 214 is generally annular and has an annular support surface for supporting and fixing the partition 213 . The annular support surface is disposed toward the coil disk 30 . In the same manner as above, the mounting bracket 214 can be installed on the side groove wall of the accommodating groove by, for example, welding, screwing, snapping, bonding or adsorption.

When the pot cover body 210 is provided with a mounting bracket 214 as described above, the mounting bracket 214 is connected to the cover body 211 to connect the cover body 211, the coil disk 30 and the partition plate 213 to form a One body. The cover 215 can be installed on the side of the mounting bracket 214 facing away from the partition 213 , and is detachably connected to the mounting bracket 214 . In this way, in actual application, the cover 215 can be removed according to actual needs, such as maintenance and replacement, disassembly and cleaning, etc., and the partition 213 can play a good isolation and protection role for at least the coil disk 30 to avoid the above-mentioned The disassembly and assembly process of the cover 215 may affect the use of the coil disk 30 or cause harm to the user.

Based on the above, further, the partition 213 is provided with a visualization structure at least at a portion corresponding to the coil disk 30 . The visualization structure may be embodied as a transparent window made of glass, transparent film, or other materials, or as a display surface that displays the image information at the coil disk 30 through principles such as reflection and refraction. For example, in this embodiment, in order to simplify the structure and reduce costs, the entire partition 213 can be made of glass material, which can not only achieve visualization purposes, but also reduce the heat acting on the cover 215 via the coil disk 30 It has a certain uniformity and heat preservation effect.

In addition, the coil disk 30 needs to induce heat in the energized state. Therefore, the pot cover assembly 20 generally also includes an electronic control component 230. The electronic control component 230 is electrically connected to the coil disk 30, provides power to the coil disk 30, and can also provide a preset value according to actual needs. control signal. The electrical control component 230 is, for example, an integrated circuit board. The electric control component 230 can be provided separately from the above-mentioned control device 130. Specifically, for example, it can be provided independently on the pot cover body 210 or on the cooking seat 10; of course, the electric control component 230 can also be provided separately from the above-mentioned control device 130. The control device 130 is integrally provided and constitutes part of the structure of the control device 130 .

In practical applications, the cooking utensil 1 generally also includes a display control panel, which provides a control interface and/or a display interface. The display control panel can be disposed on the upper end of the pot cover assembly 20, that is, the cover body. 211 places. Based on this, the electronic control component 230 can also be installed on the cover 211 . In order to reduce the mutual influence between the electric control component 230 and the coil disk 30, in one embodiment, the pot cover body 210 further includes a shielding plate 212, and the shielding plate 212 is at least corresponding to the electric control part. between component 230 and the coil disk 30 . The shielding plate 212 may specifically be an aluminum plate or the like.

Since this application mainly improves the coil disk 30, in the following embodiments, the structure of the coil disk 30 is mainly described with reference to the drawings. It should be noted that in the following embodiments, the coil winding 320 is wound on the upper side or the lower side of the disk base 310 as an example.

In this application, please refer to Figures 5, 6 and 9. The coil disk 30 is formed with a central region 31, an edge region 32 and a connection region 33 located between the middle region 31 and the edge region 32; The middle region 31 is close to the middle of the coil disk 30 , and the edge region 32 is close to the periphery of the coil disk 30 . The magnetic field strength of the coil disk 30 at either the middle region 31 or the edge region 32 is greater than the magnetic field strength at the connection region 33 .

Since the temperature at the edge of the cover 215 is relatively low when the cooking appliance 1 is cooking food, when the steam in the cooking cavity 110 rises upward, it is easier for the cover 215 to have a lower temperature. Condensed water condenses at the edge of the cover 215; in addition, among the steam rising upward in the cooking cavity 110, the amount of steam in the middle area is relatively largest, which makes the amount of steam in the center of the cover 215 larger than in other parts. Larger, it is easier to condense to form a large amount of condensation water. This design strengthens the magnetic field intensity in the middle region 31 and the edge region 32 so that the middle region 31 and the edge region 32 have a stronger heating effect, thereby enabling targeted heating of the areas where condensation water is likely to condense on the cover 215 to achieve better results. The good water removal effect, as mentioned above, effectively solves the problem of condensed water generated at the cover 215 falling back on the food (such as rice) in the cooking cavity 110 during the cooking process, causing the rice to drip white or become raw, affecting the food and taste; At the same time, it also effectively prevents the condensed water generated at the cover 215 from falling on the rice and the cooking seat 10 during the opening process of the pot lid assembly 20, contaminating the cooking seat 10 or penetrating into the interior of the cooking seat 10, causing adverse effects on cooking. The electronic control device in the base 10 is damaged.

As shown in FIG. 9 , since the coil disk 30 and the cover plate 215 in the pot cover body 210 are stacked from top to bottom, that is, the plates are facing each other. Therefore, the above-mentioned middle area 31 , edge area 32 and connection area 33 all fall within the projection area of the cover plate 215 on the coil disk 30 ; conversely, the above-mentioned middle area 31 , edge area 32 and connection area 33 are within the projection area of the cover plate 215 It also has a corresponding projection area.

As mentioned above, the coil disk 30 includes a disk base 310 and a coil winding 320 wound on the disk base 310; the coil winding 320 is wound at least in the middle region 31 and the edge region 32.

The winding method of the coil winding 320 in the middle region 31 and the edge region 32 is not limited. The disk base 310 has a winding center for the coil winding 320 to be wound around. The coil winding 320 may only include one winding unit, and the winding unit is wound around the winding center in a circular shape. In an elliptical shape or in any desired special shape; alternatively, the coil winding 320 may include a plurality of winding units, each of which is wound around its own winding center, and the plurality of winding units are respectively around the middle region 31 and the edge region 32 .

For ease of understanding, in the following embodiments, the coil winding 320 includes a winding unit as an example, and each coil segment of the coil winding 320 is generally wound in a circle.

In specific applications, the wire can be installed on the disk base 310 by bonding or other methods after winding the shaped coil winding 320 . Alternatively, in one embodiment, the coil disk 30 further includes a winding bracket 330 provided on the disk base 310. The winding bracket 330 defines a winding slot for winding the wire. The coil winding 320 is formed to make it easier to wind and shape.

Because the coil windings 320 are basically wound sequentially from the center of the disk base 310 to the edge of the disk base 310 . The winding bracket 330 may take on different structures. In one embodiment, the winding bracket 330 is protrudingly provided on the disk base 310 and is provided with multiple concentric arc-shaped annular ribs along the radial direction of the disk base 310. The winding groove with the opening facing upward is defined between every two annular ribs.

Alternatively, in one embodiment, the winding bracket 330 includes a winding portion protruding from the disk surface of the disk base 310 and a crimping portion extending in a radial direction from a free end of the winding portion, A laterally open winding groove is defined between the wire pressing portion and the disk base 310 .

It should be noted that in the above-mentioned middle region 31, edge region 32 and connection region 33, the difference between the small radius and the large radius of each region is defined as the ring width. This design does not limit the respective ring widths of the central region 31, the edge region 32 and the connecting region 33. They can have the same setting for each of them, or at least one or two of the ring widths can have differentiated settings. For example, the annular width of the central region 31 is set to be greater than the annular width of the edge region 32 and the annular width of the connecting region 33; or, the annular width of the edge region 32 is set to be greater than the annular width of the middle region 31 and the annular width of the connecting region 33; or, The ring widths of the central region 31 and the edge region 32 are respectively not larger than the ring width of the connection region 33, but the ring widths of the middle region 31 and the edge region 32 are always larger than the ring width of the connection region 33, etc. It can be understood that under the same conditions, the larger the ring width is, to a certain extent, the larger the area for the coil winding 320 to be wound, that is, the larger the heating area, and thus the better the heating effect.

Further, in this embodiment, the coil winding 320 is wound around at least the middle region 31 and the edge region 32 so that at least the center of the cover plate 215 and the edge of the cover plate 215 can be heated. Furthermore, the magnetic field strength of the coil disk 30 at either the middle region 31 or the edge region 32 is greater than the magnetic field strength at the connection region 33 .

In order to realize that the magnetic field strength of the coil disk 30 in either the middle region 31 or the edge region 32 is greater than the magnetic field strength in the connection region 33 , the coil winding 320 may only be in the middle region 31 and the edge area 32 while leaving the connection area 33 essentially free. That is to say, the magnetic field intensity at the connection area 33 is zero. Specifically, the coil winding 320 includes a first coil 321 wound around the middle region 31 and a second coil 322 wound around the edge region 32 . The coil windings 320 are wound on the disk base 310 in a manner staggered to the connection area 33 .

Based on this, in one embodiment, the coil winding 320 may be formed by at least two wires wound around the middle region 31 to form the first coil 321 and around the edge region 32 to form the third coil. Second coil 322, at this time, the connection area 33 is basically empty without any coils being arranged. Or in another embodiment, the coil winding 320 can be formed by winding the first coil 321 in the middle region 31 sequentially from a whole wire, and then winding the second coil in the edge region 32 . 322, at this time, only the connection leads between the first coil 321 and the second coil 322 are arranged in the connection area 33, and basically no electric induction heating is performed.

Of course, the coil winding 320 can also be wound in the middle region 31 , the edge region 32 and the connection region 33 , but it is ensured that the coil disk 30 is wound in both the middle region 31 and the edge region 32 . It suffices that the magnetic field intensity at any location is greater than the magnetic field intensity at the connection area 33 .

In the above embodiment, the magnetic field strength of the coil disk 30 in a region can be directly reflected by the magnetic field strength of the coil winding 320 in the region. That is, as mentioned above, the coil winding 320 includes the first coil 321 wound in the middle region 31 , the second coil 322 wound in the edge region 32 and the connecting region 33 . When the third coil is provided, the magnetic field intensity of either of the first coil 321 and the second coil 322 is set to be greater than the magnetic field intensity of the third coil.

For example, in order to realize that the magnetic field strength of the middle region 31 is greater than the magnetic field strength of the connection region 33 , the winding area of the first coil 321 in the middle region 31 can be set to be larger than that of the third coil in the middle region 31 . The winding area of the connection area 33; similarly, in order to realize that the magnetic field intensity of the edge area 32 is greater than the magnetic field intensity of the connection area 33, the winding area of the second coil 322 in the edge area 32 can be set to be greater than The winding area of the third coil in the connection area 33 . The winding area of the third coil in the connection area 33 may be zero, that is, the connection area 33 is empty.

And/or, in order to realize that the magnetic field strength of the middle region 31 is greater than the magnetic field strength of the connection region 33 , the number of winding layers of the first coil 321 in the middle region 31 can be set to be greater than that of the third coil in the middle region 31 . The number of winding layers of the connection area 33; similarly, in order to achieve that the magnetic field intensity of the edge area 32 is greater than the magnetic field intensity of the connection area 33, the winding layer of the second coil 322 in the edge area 32 can be set. The number of layers is greater than the number of winding layers of the third coil in the connection area 33 . The number of winding layers of the third coil in the connection area 33 may be zero, that is, the connection area 33 is empty.

For example, as shown in FIGS. 5 to 8 , the first coil 321 can be wound with two layers and multiple turns in the middle region 31 , and the second coil 322 can be wound with two layers and multiple turns in the edge region 32 , so The connection area 33 is left empty.

Further, in one embodiment, when the number of winding layers of the first coil 321 is not less than 2, and the maximum diameter of the edge region 32 is D, the maximum diameter D1 of the middle region 31 is not greater than 0.25 D. It can be understood that when D1 is set far beyond 0.25D, the winding area of the first coil 321 is increased, which helps to enhance the heating effect of the coil disk 30 in the middle area 31, but at the same time, it is easy to increase the heating effect in the middle area 31. The size of the coil disk 30 is increased, and the heating power in the middle region 31 is easily higher than required, resulting in a waste of energy.

Further, in one embodiment, the number of winding layers of the second coil 322 is not less than 2; the maximum diameter of the edge region 32 is D, and the minimum diameter D2 of the edge region 32 is not less than 0.7D. When D2 is set to be much smaller than 0.7D, the winding area of the second coil 322 is also increased, which helps to enhance the heating effect of the coil disk 30 at the edge area 32, but at the same time it is easy to increase the size of the edge area 32. , compressing the size of the middle region 31 leads to an increase in the size of the coil disk 30, which easily causes the heating power at the edge region 32 to be higher than required, resulting in a waste of energy.

Based on the above, in a specific application, the first coil 321 can be wound with two layers and multiple turns in the middle region 31 , and the second coil 322 can be wound with two layers and multiple turns in the edge region 32 , so The above-mentioned connection area 33 is left vacant; D1 is not greater than 0.25D and D2 is not less than 0.7D, which can ensure that the heating effect of the coil disk 30 on the center of the cover plate 215 is enhanced, and the heating effect on the edge of the cover plate 215 is enhanced to achieve the desired location. In addition to the purpose of dispersing the condensed water in time, it helps to reduce energy consumption and waste, and ensures that the structure of the coil disk 30 is compact.

It should be noted that in the above embodiment, the coil winding 320 is not limited to being wound in the middle region 31 , the edge region 32 and the connection region 33 , and the coil winding 320 needs to be wound in the entire region. This design does not limit the specific winding method of the coil winding 320 in each area. To achieve the above, the magnetic field intensity of the coil disk 30 in either the middle area 31 or the edge area 32 is greater than that in the middle area 31 and the edge area 32 . The magnetic field intensity requirement at the connection area 33 is sufficient. On this basis, the first coil 321 and/or the second coil 322 may be arranged in a single ring in the corresponding area, or may be arranged in multiple rings at intervals.

In addition, the magnetic field strength of the coil disk 30 in a region, in addition to being affected by the coil windings 320 wound in the region, can also be adjusted in other ways. For example, in one embodiment, magnetic components such as magnetic strips can be provided to gather the magnetic field lines in the required area to enhance the magnetic field strength; or in another embodiment, magnetic isolation components such as shields can be provided to Shield the magnetic field lines outside the required area to enhance the magnetic field strength in the required area.

Based on any of the above embodiments, the plate base 310 is provided with a through hole 216 along its thickness direction, and the through hole 216 is used to connect the inner and outer sides of the cooking cavity 110 of the cooking appliance 1 . The through hole 216 can realize the exchange of materials inside and outside the cooking cavity 110 , for example, discharging the steam generated during the cooking process in the cooking cavity 110 to the outside of the cooking cavity 110 , or putting food, such as food, etc., outside the cooking cavity 110 into the cooking cavity 110 Inside. Therefore, according to the actual needs of the cooking appliance 1, the through hole 216 can be used as a communication hole 216, such as a steam overflow hole of the cooking cavity 110, a feeding hole for materials (such as food ingredients, seasonings, water, etc.), and a heat dissipation hole. , pressure relief holes, etc.

Of course, since the through hole 216 communicates with the internal and external environments of the cooking cavity 110, in one embodiment, when the pot cover assembly 20 also includes functional components, the through hole 216 can also serve as a link between the functional components. Installation holes or avoidance holes. Specifically, the functional component is detachably connected to the pot lid main body 210 , and the connection point between the functional component and the pot lid main body 210 can be located at any part of the pot lid main body 210 . Moreover, at least part of the functional component is inserted through the through hole 216 and can be completely accommodated in the through hole 216 , or can pass through the through hole 216 and extend into the cooking cavity 110 . In this way, there is no need to open additional hole structures for the functional components, which helps simplify the processing process and ensures the structural strength of the pot cover body 210 .

The functional components can be set differently according to actual needs:

In one embodiment, when the cooking appliance 1 is, for example, a stir fryer or other product, and is provided with a stirring function, the functional component may be a stirring mechanism, which at least includes a stirring shaft and a stirring blade connected to the stirring shaft. At this time, the stirring shaft can pass through the through hole 216 and the stirring blade is installed in the cooking cavity 110 .

In one embodiment, when the cooking appliance 1 is a product such as an automatic food processor and is equipped with an automatic feeding function, a material crushing function, etc., the functional component may be a feeding mechanism, specifically, for example, an air blowing or exhausting mechanism, Conveyor belt mechanism, etc.; the functional component can also be a piercing mechanism, such as a knife for piercing capsules, a roller for grinding rice grains, etc.

In an embodiment, the functional component may also be a sensing mechanism, such as a thermometer 220, a humidity sensor, a pressure sensor, etc.

In view of the above, the pot lid body 210 may also include a steam valve assembly 217. The steam valve assembly 217 is connected to the lid body 211 and is movably installed at the through hole 216 to control the through hole 216. the opening size.

Based on the above embodiments related to the through holes 216 , the coil windings 320 are arranged staggered to the through holes 216 . In this way, it can be avoided that the arrangement of the through hole 216 interferes with the magnetic field of the coil winding 320 or the coil winding 320 causes a short circuit risk due to the influence of, for example, steam flowing through the through hole 216 .

Specifically, when the coil winding 320 does not wind the third coil in the connection area 33, that is, when the connection area 33 is empty, the through hole 216 is provided in the connection area 33, and all the connecting areas are directly used. The design of the coil disk 30 at the connection area 33 does not require additional changes to the winding method of the coil winding 320 .

In addition, in one embodiment, the cover 211 is provided with a mounting slot 218, and the cover plate 215 is located at the notch of the mounting slot 218. When the cover plate 215 completely closes the mounting slot 218, When the installation groove 218 is in a completely closed state; when the cover plate 211 is provided with an air hole connected to the installation groove 218, the steam in the cooking cavity 110 can enter the installation groove 218 through the air hole, so that The installation groove 218 can be connected to the inside of the cooking cavity 110 while remaining disconnected from the external environment of the cooking base 20 .

When the pot cover assembly 20 further includes a thermometer 220 , the thermometer 220 can be selectively installed at the through hole 216 and/or the installation groove 218 . For example, when there is one thermometer 220, it can be installed at the through hole 216 or the mounting slot 218; when there are two thermometers 220, or the same thermometer 220 has two temperature measurement devices. point, two thermometers 220 or two temperature measurement points can be separately installed at the through hole 216 and the installation slot 218 to provide more and richer measurement results, which is helpful for accurate measurement.

In one embodiment, the thermometer 220 is disposed at the installation slot 218, and the temperature measuring end of the thermometer 220 can be in contact with the cover 215, or facing the cover 215 and connected with the cover. 215 keeps the interval. When the cover 215 is provided with an air hole connected to the cooking cavity 110 so that the installation slot 218 is semi-closed, more high-temperature steam can be accumulated to prevent the high-temperature steam from flowing out of the cooking cavity 110 . Therefore, disposing the thermometer 220 at the installation groove 218 has a better and more accurate measurement effect for sensing temperature changes in the cooking cavity 110 during the cooking process. Further, the installation groove 218 can be arranged as close to the center of the pot cover body 210 as possible. Since most of the steam in the cooking cavity 110 gathers in the middle and rises, the thermometer 220 arranged near the center can receive more and more primitive steam, thereby contributing to accurate measurement. The through hole 216 is provided on the side of the installation slot 218 to prevent the overflow of steam at the through hole 216 or the installation of functional components from interfering with the measurement process or results of the thermometer 220 . Of course, the thermometer 220 can directly measure the steam temperature in the installation groove 218, or when the steam adheres to the cover plate 215, the temperature of the cooking cavity 110 can be obtained by measuring the temperature of the cover plate 215 and converting it.

In the same manner as the through hole 216 , the coil winding 320 is wound sequentially along the periphery of the mounting slot 218 , which can prevent the installation slot 218 from interfering with the magnetic field of the coil winding 320 . In a further solution, when the mounting slot 218 is disposed corresponding to the center of the coil disk 30 and the mounting slot 218 is defined by a cylindrical structure, the cylindrical structure can also serve as a base for the coil winding 320 . The winding posts facilitate the winding and shaping of the coil winding 320 on the disk base 310 .

The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Under the inventive concept of the present application, equivalent structural transformations made by using the contents of the description and drawings of the present application, or direct/indirect application Other related technical fields are included in the patent protection scope of this application.

Claims (15)

1. A coil disk, wherein the coil disk is formed with a central region, an edge region and a connection region between the central region and the edge region;

   Wherein, the magnetic field strength of the coil disk at either the middle region or the edge region is greater than the magnetic field strength at the connection region.
2. The coil disk according to claim 1, wherein the coil disk includes a disk base and a coil winding wound on the disk base;

   The coil winding is wound at least in the middle region and the edge region.
3. The coil disk according to claim 2, wherein the winding area of the coil winding at either of the middle region and the edge region is larger than the winding area of the coil winding at the connection region. .
4. The coil disk according to claim 2 or 3, wherein the number of winding layers of the coil winding at either the middle region or the edge region is greater than the number of winding layers of the coil winding at the connection region. The number of winding layers.
5. The coil disk of claim 2, wherein the coil windings include a first coil wound in the middle region, a second coil wound in the edge region, and a third coil wound in the connection region. Three coils;

   The magnetic field intensity of any one of the first coil and the second coil is greater than the magnetic field intensity of the third coil.
6. The coil disk according to claim 2, wherein the coil windings are wound on the disk base in a staggered manner in the connection area.
7. The coil disk according to claim 6, wherein the coil winding includes a first coil wound in the middle region, and the number of winding layers of the first coil is not less than 2;

   The maximum diameter of the edge area is D, and the maximum diameter of the middle area is not greater than 0.25D.
8. The coil disk according to claim 6 or 7, wherein the coil winding includes a second coil wound in the edge area, and the number of winding layers of the second coil is not less than 2;

   The maximum diameter of the edge area is D, and the minimum diameter of the edge area is not less than 0.7D.
9. The coil plate according to claim 2, wherein the plate base is provided with a through hole along its thickness direction, and the through hole is used to connect the inner and outer sides of the cooking cavity of the cooking appliance;

   The coil windings are arranged staggered at the through holes.
10. The coil plate according to claim 6, wherein the plate base is provided with a through hole along its thickness direction, and the through hole is used to connect the inner and outer sides of the cooking cavity of the cooking appliance;

    The through hole is provided at the connection area.
11. The coil plate according to claim 2, wherein the plate base is provided with a mounting slot, and the mounting slot is used for installing a thermometer of the cooking appliance;

    The coil windings are wound sequentially along the periphery of the mounting slot.
12. A pot cover assembly, which includes:

    The pot lid body includes a cover plate located on one side of the pot lid body; and,

    The coil disk according to any one of claims 1 to 11, the coil disk is arranged in the main body of the pot cover and used to heat the cover plate when electricity is supplied.
13. The pot lid assembly according to claim 12, wherein the pot lid body includes a lid body and a partition plate, the lid body, the partition plate and the cover plate are arranged in sequence, and the coil disk is limited at the position. between the cover and the partition;

    The partition plate is provided with a visible structure corresponding to the coil disk, and the cover plate is detachably connected to the partition plate.
14. A cooking utensil, including:

    The cooking base has a cavity with an opening at one end;

    The pot cover assembly according to claim 12 or 13, which is releasably disposed on the open end of the cooking seat to form a cooking cavity together with the cooking seat; and,

    A heating device is provided on the cooking seat and used to heat the cooking cavity.
15. The cooking appliance of claim 14, wherein the heating device is an electromagnetic heating device.