CN109222665B

CN109222665B - Electric stewpan and heating plate thereof

Info

Publication number: CN109222665B
Application number: CN201810616187.6A
Authority: CN
Inventors: 陈建新; 李泽涌
Original assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Current assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Priority date: 2018-06-14
Filing date: 2018-06-14
Publication date: 2024-05-03
Anticipated expiration: 2038-06-14
Also published as: CN109222665A

Abstract

The invention provides an electric stewpan and a heating plate thereof. The electric stewpan and the heating plate thereof provided by the invention adopt the graphene heating layer as the heating element, so that a brand new heating scheme is provided for electric stewpan products, the heat utilization efficiency of the electric stewpan can be greatly improved, and meanwhile, the structure of the heating component is simplified.

Description

Electric stewpan and heating plate thereof

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to an electric stewpan and a heating plate thereof.

Background

An electric stewpan is a common cooking utensil in daily life of people. The electric stewpan comprises a heating main body and an inner container accommodated in the heating main body, wherein the heating main body further comprises a heating disc, the heating disc is positioned at the bottom of the inner container, and the heating disc is used for emitting heat and transmitting the heat to the inner container to stew foods accommodated in the inner container.

The heating plate in the current electric stewpan is a cast aluminum heating plate or an electromagnetic coil plate, and the electric stewpan which heats by utilizing the cast aluminum heating plate or the electromagnetic coil plate has low heat utilization efficiency; in addition, the cast aluminum heating plate or the electromagnetic coil plate has a complicated structure.

Disclosure of Invention

The invention provides a heating plate and an electric stewpan, which are used for solving the technical problems of low heat utilization efficiency and complex heating plate structure of the electric stewpan in the prior art.

In order to solve the technical problems, the invention adopts a technical scheme that: provided is a heat generating plate including: the heating assembly comprises a transparent carrier plate and a graphene heating layer combined with the transparent carrier plate, wherein the first electrode and the second electrode are connected with the graphene heating layer to receive power input and further drive the graphene heating layer to radiate infrared rays.

According to a specific embodiment of the invention, the graphene heating layer is combined with the transparent carrier plate in a printing manner.

According to an embodiment of the present invention, the graphene heating layer is in a shape of a cake, a strip, a mesh or a ring.

According to a specific embodiment of the invention, the graphene heating layer is annular and is broken at one place so that the graphene heating layer has two ends which are close to each other, and the first electrode and the second electrode are respectively connected to the two ends.

In order to solve the technical problems, the invention adopts another technical scheme that: there is provided an electric stewpan comprising: the heating main body comprises any heating disc, the heating main body is provided with a liner cavity for accommodating the liner, the heating disc is arranged at the bottom of the liner cavity, and at least part of the liner is made of transparent materials.

According to a specific embodiment of the invention, the heating body further comprises a support, and the support is provided with an annular bearing table for bearing the heating plate.

According to one embodiment of the present invention, the liner is a glass liner or a quartz liner.

According to one embodiment of the invention, at least part of the liner has at least a two-layer structure.

According to an embodiment of the invention, the spacing between adjacent two of the at least two layers is less than or equal to 10mm.

According to one embodiment of the invention, the material of the outer pot is transparent; or the outer pot is provided with an opening to allow the interior of the heating body to be viewed from the exterior of the heating body.

The beneficial effects of the invention are as follows: compared with the prior art, the electric stewpan and the heating plate thereof provided by the invention adopt the graphene heating layer as the heating element, so that a brand new heating scheme is provided for the electric stewpan product, the heat utilization efficiency of the electric stewpan can be greatly improved, and the structure of the heating component is simplified.

Drawings

For a clearer description of the technical solutions of embodiments of the invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the invention, from which, without inventive effort, other drawings can be obtained for a person skilled in the art, wherein:

FIG. 1 is a schematic cross-sectional view of a first embodiment of an electric stewpan according to the present invention;

FIG. 2 is a schematic perspective view of the heat-generating plate of the first embodiment in FIG. 1;

FIG. 3 is an enlarged schematic view of area A of FIG. 1;

FIG. 4 is a schematic cross-sectional view of a second embodiment of an electric stewpan according to the present invention;

FIG. 5 is an exploded view of the carbon fiber heating tube, reflector, and transparent carrier plate of FIG. 4;

FIG. 6 is an enlarged schematic view of region B of FIG. 4;

FIG. 7 is a schematic cross-sectional view of a third embodiment of an electric stewpan according to the present invention;

fig. 8 is a schematic front view of a fourth embodiment of an electric stewpan of the present invention.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms "first," "second," and the like in this disclosure are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

First embodiment

Referring to fig. 1, an electric stewpan 10 in this embodiment includes a bladder 100 and a heating body 200. The heating body 200 is provided with a liner cavity 210, the liner cavity 210 is used for accommodating the liner 100, and the heating body 200 is provided with a heating plate 220 at the bottom of the liner cavity 210. The hotplate 220 may or may not be centrally located at the bottom of the liner cavity 210.

The heating plate 220 comprises a heating component, a first electrode 221 and a second electrode 222, wherein the heating component comprises a transparent carrier plate 223 and a graphene heating layer 224 combined with the transparent carrier plate 223, and the first electrode 221 and the second electrode 222 are connected with the graphene heating layer 224 to receive power input and further drive the graphene heating layer 224 to radiate infrared rays.

The transparent carrier 223 may be made of a heat-resistant material such as glass or quartz. In this embodiment, the shape of the transparent carrier plate 223 is circular, and in other embodiments, the shape of the transparent carrier plate 223 may be polygonal or elliptical, and the material and shape of the transparent carrier plate 223 are not limited in this embodiment.

The graphene heat-generating layer 224 is bonded to the transparent support plate 223 by printing or the like in a suitable manner. Graphene can emit infrared rays when energized. The graphene heating layer 224 is also connected with a wire for supplying power to the graphene heating layer 224. In this embodiment, in order to make the graphene heating layer 224 reliably connected to the conductive line, the first electrode 221 and the second electrode 222 may be disposed on the graphene heating layer 224, and the first electrode 221 and the second electrode 222 are connected to the graphene heating layer 224 and the conductive line. In order to avoid the short circuit between the first electrode 221 and the second electrode 222 and to maximize the efficiency of the graphene heat-generating layer 224, the first electrode 221 and the second electrode 222 may be disposed at two relatively remote positions of the graphene heat-generating layer 224, for example, the first electrode 221 and the second electrode 222 may be disposed at two opposite positions of the edge of the graphene heat-generating layer 224, and of course, the first electrode 221 and the second electrode 222 may be disposed at other positions of the graphene heat-generating layer 224, which is not limited herein.

In the present embodiment, the graphene heat-generating layer 224 is ring-shaped and broken at one place such that the graphene heat-generating layer 224 has two ends that are close to each other, and the first electrode 221 and the second electrode 222 are connected to the two ends, respectively. In other embodiments, the graphene heat-generating layer 224 may also be in a shape of a cake, bar, mesh, or ring. The strip may have various shapes, for example, the strip has a first portion and a second portion, where the first portion and the second portion are connected, the first portion and the second portion are both arc-shaped, and a radius of the first portion may be greater than or less than a radius of the second portion. For another example, the strip may include at least two straight line segments connected in angular succession. For another example, the strip shape may be U-shaped or the like. The shape of the graphene heat-generating layer 224 is not limited in this embodiment.

When the graphene heating layer 224 is combined with the transparent carrier plate 223, an area of the graphene heating layer 224 may be less than or equal to an area of the transparent carrier plate 223. At least two graphene heating layers 224 may be further disposed on the transparent carrier 223, for example, two semicircular graphene heating layers 224 corresponding to each other may be disposed on the transparent carrier 223, so that the two semicircular graphene heating layers 224 are generally circular on the whole transparent carrier 223.

When the graphene heat-generating layer 224 is energized, the heat-generating power of the graphene heat-generating layer 224 may be any value from 300W to 2000W.

The material of the liner 100 is at least partially transparent. In this embodiment, the material of the liner 100 is all transparent. In other embodiments, only the bottom of the liner 100 may be provided with a transparent material, so that the graphene heat-generating layer 224 can pass infrared rays through the transparent portion of the bottom of the liner 100 into food when emitting infrared rays; alternatively, the inner container 100 may include a bottom wall and a side wall integrally connected to the outer periphery of the bottom wall, and the bottom wall and part or all of the side wall of the inner container 100 may be formed of a transparent material. The liner 100 may be a glass liner or a quartz liner.

In this embodiment, the heating body 200 further includes a support 230, and the support 230 is provided with an annular bearing table 231, where the annular bearing table 231 is used to bear the heating plate 220. Specifically, the holder 230 includes a bottom surface 232 and a side portion 233 integrally connected to the outer periphery of the bottom surface 232, and the annular bearing 231 is located on the side portion 233. When the heat-generating plate 220 is carried on the carrying platform, the graphene heat-generating layer 224 is located on a side of the transparent carrier 223 close to the bottom surface 232, and a side of the transparent carrier 223 facing away from the bottom surface 232 is used for placing the liner 100.

The heating body 200 further includes an outer pot 240, the outer pot 240 includes a housing 241 and a heat-retaining cover 242, the heat-retaining cover 242 and the housing 241 are stacked and the top edge of the heat-retaining cover 242 is fixedly connected with the top edge of the housing 241.

The liner 100 further includes a cover carrying table 110 integrally connected to the top of the sidewall, where the cover carrying table 110 is used for carrying the cover 300, and the cover 300 and the liner 100 cooperate to form a containing space for containing food.

By the mode, the electric stewpan and the heating plate thereof provided by the invention adopt the graphene heating layer as the heating element, so that a brand new heating scheme is provided for electric stewpan products, the heat utilization efficiency of the electric stewpan can be greatly improved, and meanwhile, the structure of the heating component is simplified.

Second embodiment

Referring to fig. 3 to 6, the electric stew pan 40 in the present embodiment includes a heating main body 500 and a liner 400, the heating main body 500 is provided with a liner cavity 510, the heating main body 500 is provided with a carbon fiber heating device 520 at the bottom of the liner cavity 510, and the carbon fiber heating device 520 is used for emitting infrared rays to perform infrared heating on the liner 400 installed in the liner cavity 510. The bladder 400 is mounted in the bladder cavity 510.

In this embodiment, the carbon fiber heating device 520 includes a transparent tube 521, a carbon fiber heating element 522, and electrodes, the carbon fiber heating element 522 is spiral, both ends of which are connected to the electrodes, the transparent tube 521 is covered on the carbon fiber heating element 522, and the inside of the transparent tube 521 is vacuum or non-vacuum. Wherein, the electrodes are connected to both ends of the carbon fiber heating element 522 specifically: a first end of the carbon fiber heating element 522 is connected to the first electrode 523, and a second end of the carbon fiber heating element 522 is connected to the second electrode 524.

Alternatively, at least one carbon fiber heat generating body 522 may be provided in one carbon fiber heat generating device 520, for example, 1, 5 or 10 carbon fiber heat generating bodies 522 may be provided in one carbon fiber heat generating device 520 to increase heat generating power. When a plurality of carbon fiber heating elements 522 are provided in one carbon fiber heating device 520, the first electrode 523 and the second electrode 524 may be connected to one carbon fiber heating device 520 or may be connected to at least two carbon fiber heating devices 520, which is not limited herein.

Alternatively, the material of the transparent pipe 521 may be a transparent material such as quartz, glass, or polymer. It should be understood that the transparent pipe 521 should have good heat resistance. The transparent pipe 521 may be made of the same material as the inner container 400.

In another embodiment, the carbon fiber heating apparatus 520 may not include the transparent tube 521, that is, the carbon fiber heating apparatus 520 includes the carbon fiber heating element 522 and the electrode, and the carbon fiber heating element 522 is in a spiral shape and both ends are connected to the electrode. In yet another embodiment, the carbon fiber heating apparatus 520 may further include an inner tube, and the carbon fiber heating element 522 is spirally wound around the inner tube. In other embodiments, the transparent tube 521 is not only covered on the carbon fiber heating element 522, but also on the electrode to protect the electrode.

Similar to the first embodiment, the electrodes are also connected to wires for supplying power to the carbon fiber heating body 522.

The material of bladder 400 is at least partially transparent. In this embodiment, the material of the inner container 400 is all transparent. In other embodiments, only the bottom wall of the bladder 400 is provided as a transparent material, or the bottom wall of the bladder 400 and a portion or all of the side walls are provided as a transparent material. The inner container 400 may be a glass inner container or a quartz inner container.

The carbon fiber heating device 520 is arranged in a circular arc shape, and in this embodiment, the carbon fiber heating device 520 is arranged in a semicircular shape. An electric stewpan 40 can have a carbon fiber heating device 520 disposed therein. In other embodiments, the carbon fiber heat generating device 520 may be provided in a circular, oval, or other shape. At least two carbon fiber heating devices 520 may be provided within one electric stewpan 40. The present embodiment does not limit the shape and number of the carbon fiber heat generating devices 520.

When the carbon fiber heat generating device 520 is energized, the heat generating power of the carbon fiber heat generating device 520 may be any value from 300W to 2000W.

In order to make full use of the infrared rays emitted from the carbon fiber heating body 522, the heating body 500 may further be provided with a reflecting cover 530, the reflecting surface of the reflecting cover 530 may be a concave surface, and the carbon fiber heating device 520 may be disposed on the reflecting surface. The reflecting surface of the reflecting cover 530 is provided with a clamping portion 531, and the carbon fiber heating device 520 is clamped in the clamping portion 531. In other embodiments, the carbon fiber heat generating device 520 may be secured to the reflective surface of the reflective cover 530 by other means, such as welding, plugging, etc. The manner in which the heat generating tube is fixed to the reflecting surface of the reflecting cover 530 is not limited in this embodiment.

The heating body 500 further includes a support 540, the support 540 is provided with a coupling groove (not shown), the reflecting cover 530 is provided with a coupling piece 532 corresponding to the position of the coupling groove, and the coupling groove and the coupling piece 532 are engaged to fix the reflecting cover 530 on the support 540. In this embodiment, the connection slot is a socket, the connection piece 532 is an insertion portion, and the connection piece 532 can be at least partially inserted into the socket, so that the reflective cover 530 is fixed on the support 540. Alternatively, the plug-in portion may be bent in order to make the connection of the plug-in hole and the plug-in portion more reliable.

The heating body 500 further includes a transparent carrier plate 550, and the support 540 is provided with an annular carrying platform 541, where the annular carrying platform 541 is used to carry the transparent carrier plate 550. Specifically: the holder 540 includes a bottom surface 542 and a side portion 543 integrally connected to the outer periphery of the bottom surface 542, and the annular mount 541 is located on the side portion 543. The material of the transparent carrier 550 may be the same as or different from that of the liner 400.

Similarly, the inner container 400 further includes a cover carrying table 410 integrally connected to the top of the sidewall, the cover carrying table 410 is used for carrying a cover, and the cover and the inner container 400 cooperate to form a containing space for containing food.

By the mode, the electric stewpan provided by the invention adopts the carbon fiber heating device as the heating element, a brand new heating scheme is provided for electric stewpan products, and the heat utilization efficiency of the electric stewpan can be greatly improved.

Third embodiment

Referring to fig. 7, the difference between the present embodiment and the first embodiment is that: liner 700 in this embodiment is at least partially of a multi-layer construction. Other components of the electric stewpan 70 in this embodiment may be the same as those in the first embodiment or the second embodiment.

Wherein, the multi-layer structure is vacuum or non-vacuum. The spacing between two adjacent layers of the multi-layer structure is less than or equal to 10mm. For example, the spacing between adjacent two of the multi-layer structures may be 1mm, 5mm, 10mm, or the like. The distance between two adjacent layers of structures is the minimum distance between two adjacent layers of structures. The number of layers of the multilayer structure is at least two, for example, the number of layers of the multilayer structure may be 2, 3, 4, or the like. In this embodiment, the distance between two adjacent layers of structures is not limited, and the specific distance can be flexibly selected according to practical situations.

In this embodiment, the liner 700 includes a bottom wall 710 and a side wall 720 integrally connected to the outer periphery of the bottom wall 710, and the bottom wall 710 and the side wall 720 are both of a multi-layer structure. In another embodiment, the liner 700 includes a bottom wall 710 and a side wall 720 integrally connected to the outer periphery of the bottom wall 710, the side wall 720 has a multi-layer structure, and the bottom wall 710 has a single-layer structure. In still another embodiment, the liner 700 includes a bottom wall 710 and a side wall 720 integrally connected to the outer periphery of the bottom wall 710, the bottom wall 710 has a multi-layer structure, and the side wall 720 has a single-layer structure.

The liner 700 further includes a cover carrying platform 730 integrally connected to the top of the sidewall 720, where the cover carrying platform 730 is used for carrying a cover, and the cover carrying platform 730 has a single-layer structure or a multi-layer structure. In this embodiment, the cover loading table 730 has a single-layer structure, and the cover loading table 730 can be sized to fit the cover, so that the cover can be loaded on the cover loading table 730.

Through the mode, the inner container is at least partially of a multi-layer structure, so that after the electric stewing pan is powered off, the cooling time of the inner container of the multi-layer structure is longer than that of the inner container of the single-layer structure, and the inner container can still supply heat to food in a longer time, so that the heat preservation duration of the food can be improved.

Fourth embodiment

Referring to fig. 8, the difference between this embodiment and any of the above embodiments is that: heating body 810 employs a transparent housing; or heating body 810 is provided with an opening 820 to allow viewing of the interior of heating body 810 from the exterior of heating body 810. Other components of the electric stewpan in this embodiment may be the same as those of any of the embodiments described above.

When the outer pot of the heating body 810 includes a housing and a heat-insulating cover, the heat-insulating cover and the housing are stacked, and the top edge of the heat-insulating cover is fixedly connected with the top edge of the housing, both the housing and the heat-insulating cover in the embodiment may be made of transparent materials; or the housing and the heat-retaining cover are each provided with an opening 820 to allow the interior of the heating body 810 to be viewed from the outside of the heating body 810, for example, the housing is provided with a first opening and the heat-retaining cover is provided with a second opening corresponding to the position of the first opening. And when the outer pot of the heating body 810 includes only the outer case, the outer case is made of transparent material; or the housing is provided with an opening 820.

Wherein the number of openings 820 may be at least one. For example, the number of openings 820 may be 1,2,3, or 4. And the shape of the opening 820 may be polygonal, circular, oval, or other combined shape, wherein the polygon may be a triangle, a quadrilateral, or a pentagon, etc. The present embodiment does not limit the number and shape of the openings 820.

In order to provide an overall aesthetic appearance to the electric stewpan, a transparent baffle may be provided at the opening 820 for mating with the opening 820 to close the opening 820. The transparent partition is mounted to the opening 820 by injection molding, screw fastening, snap fastening, or adhesive fastening.

The transparent partition board can be made of glass material, transparent plastic or other transparent materials, and the glass material can be quartz glass material or silicon glass material. The material of the transparent partition may be the same as or different from the material of the inner container. The manner in which the transparent partition is fixed to the opening 820 and the material of the transparent partition are not limited in this embodiment.

The transparent partition plate can be made of a color-changing material, the color-changing material can change the transparency degree of the transparent partition plate along with the change of temperature, for example, the color-changing material is opaque at normal temperature and becomes transparent after reaching the preset temperature.

In this way, since the heating body is provided with the opening to allow the interior of the heating body to be viewed from the exterior of the heating body and the material of the inner container is at least partially transparent, a user can see the cooking condition of food from the opening when using the electric stew pot, thereby avoiding the situation that the user frequently takes the pot cover off in order to see the cooking condition.

The foregoing description is only of embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims

1. An electric stewpan is characterized by comprising a heating main body and an inner container; the heating body includes a heating plate, the heating plate includes: the heating component comprises a transparent carrier plate and a graphene heating layer combined with the transparent carrier plate, wherein the first electrode and the second electrode are connected with the graphene heating layer to receive power input and drive the graphene heating layer to radiate infrared rays; the material of the inner container is all transparent material, the inner container is at least partially of a multi-layer structure, and a space exists between two adjacent layers of structures in the multi-layer structure.

2. The electric saucepan of claim 1, wherein the graphene heating layer is bonded to the transparent carrier plate by printing.

3. The electric saucepan of claim 1, wherein the graphene heating layer is in a shape of a cake, strip, mesh or ring.

4. An electric stewpan according to claim 3, wherein the graphene heat-generating layer is annular and broken at one location such that the graphene heat-generating layer has two ends in close proximity, the first and second electrodes being connected to the two ends respectively.

5. The electric saucepan of claim 1, wherein the heating body has a bladder cavity to accommodate the bladder, the heat generating plate being mounted at a bottom of the bladder cavity.

6. The electric stewpan of claim 5, wherein the heating body further comprises a support provided with an annular bearing table for bearing the heat-generating plate.

7. The electric saucepan of claim 5, wherein the inner bladder is a glass inner bladder or a quartz inner bladder.

8. The electric saucepan of claim 5, wherein at least part of the inner bladder is of a 2-layer, 3-layer or 4-layer construction.

9. The electric saucepan of claim 8, wherein a spacing between adjacent ones of the at least two layers is less than or equal to 10mm.

10. The electric stewpan according to claim 5, wherein the heating body is a transparent outer shell; or the outer pot is provided with an opening to allow the interior of the heating body to be viewed from the exterior of the heating body.