CN210124595U - Cooking utensil - Google Patents

Abstract

The utility model provides a cooking utensil, include: a pot body having a cooking cavity; the pot cover is covered on the pot body; wherein, the pot body includes shell, interior pot and conductive structure, and interior pot includes interior pot body and electric heat membrane, and interior pot body has the solid of revolution shape, and the gyration generating line of the solid of revolution is including the curve section that is used for forming the lateral wall of interior pot body, and the curve section outwards bulges, and on the outer wall of pot body including the electric heat membrane adheres to, conductive structure sets up in the shell, under the condition that interior pot set up in the shell, conductive structure switches on with the electric heat membrane, and the electric heat membrane can be circular telegram and generate heat. The first conductive structure comprises conductive rods, and the conductive rods are arranged along the vertical direction or the normal direction of the inner pot body. The technical scheme of the utility model the problem that electric pressure cooker heating rate is slow, power is low among the prior art has been solved effectively.

Description

Cooking utensil

Technical Field

The utility model relates to a small household electrical appliances field particularly, relates to a cooking utensil.

Background

Electric heating cooking appliances such as electric pressure cookers have been widely used by consumers due to their advantages of fast heating speed, simplicity and easy operation. Most of electric pressure cookers in the market adopt a mode of arranging an electric heating plate at the bottom of an inner container for heating, and the heating power is low. And the electric pressure cooker has a complex structure and a heavier integral structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cooking utensil to solve the problem that the electric pressure cooker in the prior art is slow in heating speed and low in power.

In order to achieve the above object, according to an aspect of the present invention, there is provided a cooking appliance, including: a pot body having a cooking cavity; the pot cover is covered on the pot body; wherein, the pot body includes the shell, interior pot and first conductive structure, interior pot is including interior pot body and electric heat membrane, interior pot body has the solid of revolution shape, the gyration generating line of the solid of revolution is including the curve section that is used for forming the lateral wall of interior pot body, the curve section is outside salient, the electric heat membrane is on the outer wall of pot body including adhering to, first conductive structure sets up in the shell, under the condition that the pot set up in the shell including, first conductive structure switches on with the electric heat membrane, the electric heat membrane can circular telegram generate heat, first conductive structure includes the conducting rod, the normal direction of vertical direction or interior pot body is arranged along the conducting rod.

Further, the pot body still includes the chassis that sets up in the shell, and the chassis is located the below of interior pot, and the conducting rod wears to establish on the chassis and can switch on with the electric heat membrane.

Further, the first conducting structure further comprises an elastic part and a cover cap, the cover cap is arranged on one side, away from the inner pot, of the chassis, the conducting rod penetrates through the cover cap, and the elastic part is arranged between the conducting rod and the cover cap and applies elastic force towards the inner pot to the conducting rod.

Furthermore, the conducting rod penetrates through the edge part of the bottom plate along the normal direction of the inner pot body.

Furthermore, the inner pot body is made of metal.

Further, the electric heating film comprises an insulating heat-conducting coating, a semiconductor coating and a heat-insulating coating which are sequentially arranged from inside to outside, and the insulating heat-conducting coating is arranged on the surface of the inner pot body.

Further, the insulating heat-conducting coating is a nitride layer.

Further, the material of the nitride layer is one or more of boron nitride, aluminum nitride and silicon nitride.

Furthermore, the material of the semiconductor coating is semiconductor ceramic.

Further, the cooking appliance is an electric pressure cooker.

Further, the cooking utensil is an electric pressure cooker, the inner pot body is made of metal, the electric heating film comprises an insulating heat-conducting coating, a semiconductor coating and a heat-insulating coating which are sequentially arranged from inside to outside, the insulating heat-conducting coating is arranged on the surface of the inner pot body, the insulating heat-conducting coating is a nitride layer, the nitride layer is made of boron nitride, one or more in aluminium nitride and silicon nitride, the material of semiconductor coating is semiconductor ceramic, the pot body is still including setting up the chassis in the shell, the below of pot in the chassis is located, the conducting rod wears to establish on the chassis and can switch on with the electric heat membrane, a conductive structure still includes elastic component and block, the one side of pot in the chassis is kept away from to the block setting, the conducting rod passes the block, the elastic component sets up between conducting rod and block and exerts the elastic force of pot in the orientation to the conducting rod, the marginal part at the chassis is worn to establish along the normal direction of interior pot body to the conducting rod.

Use the technical scheme of the utility model, on the outer wall of pot body including the electric heat membrane adheres to, the electric heat membrane that the circular telegram was generated heat is direct to interior pot body heating. Compare in the heating methods of electric hot tray, the laminating of electric heat membrane and interior pot body is inseparabler, and heating power is higher, rate of heating is faster. Compared with other heating modes, such as electromagnetic heating (or IH heating), the electric heating film heating mode has lower structural requirements on the inner pot, and only a conductive structure needs to be arranged to enable the electric heating film to be electrified and heated. When the inner pot is placed into the shell, the conducting rods can be in contact with the contacts of the electric heating film along the vertical direction or the normal direction of the inner pot body, the reaction is sensitive, and the heating effect is guaranteed. Meanwhile, the contact area between the conductive rod and the contact can be effectively increased by arranging the conductive rod vertically or along the normal direction of the inner pot body, and the electrifying effect is ensured.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an exploded schematic view of a first embodiment of a cooking appliance according to the present invention;

FIG. 2 shows a schematic cross-sectional structural view of the cooking appliance of FIG. 1;

fig. 3 shows a partially enlarged structural view at a of the cooking appliance of fig. 2;

fig. 4 shows a schematic cross-sectional structural view of a second embodiment of the cooking appliance according to the present invention;

fig. 5 shows a partial enlarged structural view at C of the cooking appliance of fig. 4;

FIG. 6 shows an exploded view of the inner pan of the cooking appliance of FIG. 1;

FIG. 7 shows an exploded view of the handle structure of the inner pan of FIG. 6;

FIG. 8 is a schematic view of a partial enlarged structure at B of FIG. 2;

FIG. 9 shows a schematic view of the inner pot of FIG. 6 from another perspective; and

fig. 10 shows a partially enlarged schematic view of fig. 9 at D.

Wherein the figures include the following reference numerals:

10. a housing; 20. an inner pot; 21. an inner pot body; 22. an electrothermal film; 23. a handle structure; 231. a handle body; 232. a handle bracket; 233. an empty avoiding groove; 234. a screw; 30. a first conductive structure; 31. a conductive rod; 32. an elastic member; 33. capping; 40. a chassis; 50. a second conductive structure; 51. a contact; 60. a third conductive structure; 61. a contact; 62. an elastic member; 70. a middle plate; 71. accommodating grooves; 80. and (4) a heat preservation cover.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The first embodiment is as follows:

as shown in fig. 1, a cooking appliance of the first embodiment includes a pot body having a cooking cavity for containing food to be cooked, and a pot cover covering the pot body. Wherein, the pot body includes shell 10, interior pot 20 and first conductive structure 30, and interior pot 20 includes interior pot body 21 and electric heat membrane 22, and electric heat membrane 22 is attached to including on the outer wall of pot body 21, and first conductive structure 30 sets up in shell 10, including under the condition that pot 20 sets up in shell 10, first conductive structure 30 switches on with electric heat membrane 22, and electric heat membrane 22 can the circular telegram generate heat.

Use the technical scheme of this embodiment, electric heat membrane 22 is attached to including on pot body 21's outer wall, and the electric heat membrane 22 of circular telegram fever directly heats pot body 21. Compare in the heating methods of electric hot tray, the laminating of electric heat membrane and interior pot body is inseparabler, and heating power is higher, rate of heating is faster. Compared with other heating modes, such as electromagnetic heating (or IH heating), the electric heating film heating mode has lower structural requirements on the inner pot, and only a conductive structure needs to be arranged to enable the electric heating film to be electrified and heated.

The technical scheme of the embodiment can be applied to electric heating cooking appliances such as electric pressure cookers and electric cookers.

Preferably, the inner pot body 21 of the present embodiment is made of a metal material with good thermal conductivity, and may also be made of an alloy material or a metal composite material with good thermal conductivity, so as to sufficiently transfer heat into the cooking cavity to heat the cooked food. Further, as shown in fig. 2 and 3, the inner pot body 21 of the present embodiment has a shape of a revolving body, and a revolving generatrix of the revolving body includes a curved section due to a side wall of the inner pot body 21 in a stroke, and the curved section is outwardly protruded. It should be noted that the curved section forming the side wall of the inner pot body 21 may be a section of circular arc section, or may include a plurality of circular arc sections with different centers of circles. The center of the curve section and the rotation center of the revolving body are spaced. The bottom wall of the inner pot body 21 can be flat or arc-shaped. For the specific embodiment of the inner pot body, reference may also be made to patent documents already disclosed, such as patent application publication No. CN103070616A, utility model patent publication No. CN203074340U, and utility model patent publication No. CN 203074275U. Such inner pot can further improve heat conduction efficiency and heating effect, improves the taste of eating the material.

As shown in fig. 1 to 3, the pot body of the present embodiment further includes a bottom plate 40 disposed in the outer shell 10, the bottom plate 40 is located below the inner pot 20, and the first conductive structure 30 is disposed on the bottom plate 40 and can be conducted with the electric heating film 22. The bottom plate 40 separates the circuit board of the cooking appliance and the like from the inner pot 20 at both sides, and plays a role of supporting the inner pot 20.

Specifically, as shown in fig. 3, the first conductive structure 30 of the present embodiment includes conductive bars 31, and the conductive bars 31 are arranged in the vertical direction. Under the condition that the inner pot 20 is arranged in the shell 10, the conducting rod 31 is in contact conduction with a contact on the electrothermal film 22, the electrothermal film 22 can be electrified to generate heat, the structure is simple, and the operation is convenient.

The electrothermal film 22 of the embodiment comprises an insulating heat-conducting coating, a semiconductor coating and a heat-insulating coating which are sequentially arranged from inside to outside, wherein the insulating heat-conducting coating is arranged on the surface of the inner pot body 21.

Preferably, the material of the insulating and heat conducting coating can be one or more of boron nitride, aluminum nitride and silicon nitride, for example.

Preferably, the semiconductor coating can be a temperature-resistant semiconductor ceramic material formed by mixing a semiconductor material such as graphene, carbon nanotubes, silver and the like with a ceramic material such as alumina, aluminum nitride and the like.

Preferably, the heat-insulating coating can be, for example, a heat-resistant insulating coating using mica powder, cenospheres, or the like as a main material. Of course other coatings of materials having insulating properties may be used.

When the inner pot 20 is manufactured and molded, after the outer surface of the inner pot body 21 is subjected to rough treatment, a high-temperature-resistant insulating heat-conducting coating is sprayed, then a high-temperature-resistant semiconductor ceramic material is silk-screened, and then a high-temperature-resistant insulating coating is sprayed. The electrode is arranged between the semiconductor ceramic material and the high-temperature-resistant insulating and heat-preserving coating, and the main material of the electrode can be composite carbon.

Preferably, the top of the conductive rod 31 is silver plated, which softens when conducting to achieve better contact with the contact.

As shown in fig. 3, the first conductive structure 30 of the present embodiment further includes an elastic member 32 and a cap 33, the cap 33 is disposed on a side of the bottom plate 40 away from the inner pot 20, the conductive rod 31 passes through the cap 33, and the elastic member 32 is disposed between the conductive rod 31 and the cap 33 and applies an elastic force to the conductive rod 31 toward the inner pot 20. Preferably, the elastic member 32 of the present embodiment is a spring, the conductive rod 31 is provided with an abutting portion engaged with the spring, and the conductive rod 31 is movable in the cap 33. Under the condition that the inner pot 20 is arranged on the chassis 40, the conductive rod 31 is retracted into the cover cap 33 under the action of gravity of the inner pot 20 and keeps in contact with the electrothermal film 22 under the action of the elastic piece 32, so that the electrified state is ensured.

In order to prevent the user from getting an electric shock when the inner pot 20 is put in or taken out and improve the safety of the cooking utensil, the inner pot 20 of the embodiment is grounded through a grounding structure. As shown in fig. 6 to 8, the grounding structure of the present embodiment includes a second conductive structure 50 and a third conductive structure 60, the second conductive structure 50 is disposed in the inner pot 20 and connected to the inner pot 20, the third conductive structure 60 is disposed in the outer pot and grounded, and under the condition that the inner pot 20 is disposed in the outer pot, the second conductive structure 50 and the third conductive structure 60 are conducted, so as to ground the inner pot 20.

Specifically, as shown in fig. 2, in the cooking appliance of the present embodiment, the pot body further includes a heat-insulating cover 80, the bottom plate 40 is located below the inner pot 20, the inner pot 20 is disposed in the heat-insulating cover 80 and located on the bottom plate 40, the heat-insulating cover 80 is grounded, and the third conductive structure 60 is connected to the heat-insulating cover 80. Therefore, the inner pot 20 is connected with the heat-insulating cover 80 in series, so that the inner pot 20 and the heat-insulating cover 80 are grounded simultaneously, and the safety of a user is ensured.

As shown in fig. 6, the inner pot 20 of the present embodiment further includes a handle structure 23, and the handle structure 23 is disposed on the inner pot body 21. The outer pot comprises an outer shell 10 and a middle plate 70, wherein the middle plate 70 is arranged at an opening of the outer shell 10, and a receiving groove 71 for receiving the handle structure 23 is arranged on the middle plate 70. The middle plate 70 may function to shield a gap between the outer shell 10 and the inner pot 20, so that the cooking appliance is beautiful; the receiving groove 71 can also function as a support handle structure 23 for fixing the inner pot 20 in the heat-insulating cover 80. The user can take and place the inner pot 20 through the handle structure 23, the operation is simple and convenient, the position of the inner pot 20 is convenient to fix, and the first conductive structure is convenient to be connected.

Specifically, as shown in fig. 8, the third conductive structure 60 of the present embodiment is disposed on the receiving groove 71 with the contact 61 thereof penetrating upward on the bottom wall of the receiving groove 71, and accordingly, the second conductive structure 50 is disposed in the handle structure 23 with the contact 51 thereof disposed toward the contact 61. The above structure enables the connection direction of the second conductive structure 50 and the third conductive structure 60 to be consistent with the placing direction of the inner pot 20 towards the outer shell 10, so that the second conductive structure 50 and the third conductive structure 60 are accurately connected, and the grounding effect is ensured.

In other embodiments not shown in the drawings, the contact of the third conductive structure may also be disposed on the sidewall or other positions of the receiving groove, and the contact of the second conductive structure may also be disposed on the side surface or other corresponding places of the handle structure to achieve conduction.

Preferably, as shown in fig. 7 and 8, the third conductive structure 60 of the present embodiment further includes an elastic member 62, and the elastic member 62 is disposed on the contact 61 and applies an elastic force toward the handle structure 23 to the contact 61. Preferably, the elastic member 62 of the present embodiment is a spring, and the contact 61 is provided with an abutting portion engaged with the spring, and the contact 61 is movable in the middle plate 70. Under the condition that the inner pot 20 is arranged in the heat preservation cover 80, the contact 61 can be retracted into the middle plate 70 under the action of the gravity of the inner pot 20 and kept in contact with the contact 51 under the action of the elastic piece 62, and the electrified state is ensured.

Specifically, as shown in fig. 7 and 8, the handle structure 23 of the present embodiment includes a handle body 231 and a handle support 232, the handle body 231 is connected to the inner pan body 21 through the handle support 232, the handle support 232 is made of metal, and the second conductive structure 50 is conducted with the handle support 232. In order to provide sufficient supporting force and structural strength, the handle bracket 232 of the present embodiment is made of metal material, such as steel, and the handle bracket 232 is connected to the contact 51 by utilizing the conductivity of the metal material, so that the electric charge is connected to the ground along the contact 51, the contact 61 and the heat-insulating cover 80, thereby ensuring the safety of the user.

Preferably, as shown in fig. 6 to 8, the handle holder 232 of the present embodiment is riveted to the inner pot 20, and the handle body 231 is disposed on the handle holder 232 by a screw 234, which facilitates electrical connection between the handle holder 232 and the inner pot 20.

Preferably, as shown in fig. 9 and 10, an avoiding groove 233 is provided at a side of the handle body 231 facing the third conductive structure 60, and the contact 51 of the second conductive structure is located in the avoiding groove 233. The avoiding groove 233 increases the range of the contact 51 and the contact 61 which can be butted, when the inner pot 20 is placed in the heat-insulating cover 80, the contact 61 is guided into the avoiding groove 233 to be in contact conduction with the contact 51, and the contact 61 is prevented from being pressed into the middle plate 70 by other insulated parts of the handle body 231, so that the contact 51 and the contact 61 are prevented from being conducted to influence the grounding effect, and further, the use safety of a user is influenced.

Example two:

the cooking appliance of the second embodiment changes the position of the current-conducting rod 31 compared to the cooking appliance of the first embodiment. As shown in fig. 4 and 5, the bottom plate 40 of the present embodiment has a curved shape similar to the curved tendency of the bottom of the inner pot body 21, and the conductive rods 31 are arranged at the edge portion of the bottom plate 40 in the normal direction of the inner pot 20. The normal direction refers to a direction perpendicular to a tangential plane at any point on the inner pot 20. Therefore, the contact area between the conductive rod 31 and the contact on the inner pot can be effectively increased, and the electrified state is further ensured.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the electrothermal film is attached to the outer wall of the inner pot body, and the electrothermal film which is electrified to generate heat directly heats the inner pot body. Compare in the heating methods of electric hot tray, the laminating of electric heat membrane and interior pot body is inseparabler, and heating power is higher, rate of heating is faster. Compared with other heating modes, such as electromagnetic heating (or IH heating), the electric heating film heating mode has lower structural requirements on the inner pot, and only a conductive structure needs to be arranged to enable the electric heating film to be electrified and heated. When the inner pot is placed into the shell, the conducting rods can be in contact with the contacts of the electric heating film along the vertical direction or the normal direction of the inner pot body, the reaction is sensitive, and the heating effect is guaranteed. Meanwhile, the contact area between the conductive rod and the contact can be effectively increased by arranging the conductive rod vertically or along the normal direction of the inner pot body, and the electrifying effect is ensured.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A cooking appliance, comprising:

a pot body having a cooking cavity;

the pot cover is covered on the pot body;

wherein the pan body comprises an outer shell (10), an inner pan (20) and a first conductive structure (30), the inner pot (20) comprises an inner pot body (21) and an electric heating film (22), the inner pot body (21) is in a revolving body shape, the revolution generatrix of the revolution body comprises a curve section for forming the side wall of the inner pot body (21), the curve section protrudes outwards, the electric heating film (22) is attached to the outer wall of the inner pot body (21), the first conductive structure (30) is arranged in the outer shell (10), under the condition that the inner pot (20) is arranged in the outer shell (10), the first conductive structure (30) is conducted with the electric heating film (22), the electric heating film (22) can be electrified to generate heat, the first conducting structure (30) comprises a conducting rod (31), the conductive rods (31) are arranged in a vertical direction or a normal direction of the inner pot body (21).

2. The cooking appliance according to claim 1, wherein the pot body further comprises a bottom plate (40) arranged in the outer shell (10), the bottom plate (40) is positioned below the inner pot (20), and the conductive rod (31) is arranged on the bottom plate (40) in a penetrating manner and can be conducted with the electrothermal film (22).

3. The cooking appliance according to claim 2, wherein the first conductive structure (30) further comprises a resilient member (32) and a cap (33), the cap (33) being disposed on a side of the bottom plate (40) remote from the inner pot (20), the conductive rod (31) passing through the cap (33), the resilient member (32) being disposed between the conductive rod (31) and the cap (33) and applying a resilient force to the conductive rod (31) towards the inner pot (20).

4. The cooking appliance according to claim 2, wherein the conductive rod (31) is inserted through an edge portion of the bottom plate (40) in a normal direction of the inner pot body (21).

5. The cooking appliance according to claim 1, wherein the inner pot body (21) is made of metal.

6. The cooking appliance according to claim 1, wherein the electrothermal film (22) comprises an insulating and heat-conducting coating, a semiconductor coating and a heat-insulating coating which are sequentially arranged from inside to outside, and the insulating and heat-conducting coating is arranged on the surface of the inner pot body (21).

7. The cooking appliance of claim 6, wherein the insulating, thermally conductive coating is a nitride layer.

8. The cooking appliance of claim 7, wherein the nitride layer is one or more of boron nitride, aluminum nitride, and silicon nitride.

9. The cooking utensil of claim 6, wherein the semiconductive coating is a semiconductive ceramic.

10. The cooking appliance of claim 1, wherein the cooking appliance is an electric pressure cooker.

11. The cooking appliance according to claim 1, wherein the cooking appliance is an electric pressure cooker, the inner pot body (21) is made of metal, the electric heating film (22) comprises an insulating heat-conducting coating, a semiconductor coating and a heat-insulating coating which are sequentially arranged from inside to outside, the insulating heat-conducting coating is arranged on the surface of the inner pot body (21), the insulating heat-conducting coating is a nitride layer, the nitride layer is made of one or more of boron nitride, aluminum nitride and silicon nitride, the semiconductor coating is made of semiconductor ceramic, the pot body further comprises a chassis (40) arranged in the outer shell (10), the chassis (40) is positioned below the inner pot (20), the electric conducting rod (31) is arranged on the chassis (40) in a penetrating manner and can be communicated with the electric heating film (22), the first electric conducting structure (30) further comprises an elastic piece (32) and a cover cap (33), the cover cap (33) is arranged on one side, far away from the inner pot (20), of the chassis (40), the conducting rod (31) penetrates through the cover cap (33), the elastic piece (32) is arranged between the conducting rod (31) and the cover cap (33) and applies elastic force towards the inner pot (20) to the conducting rod (31), and the conducting rod (31) penetrates through the edge of the chassis (40) along the normal direction of the inner pot body (21).

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