CN109419334B

CN109419334B - Cooking utensil and coil panel assembly thereof

Info

Publication number: CN109419334B
Application number: CN201810848404.4A
Authority: CN
Inventors: 朱旭光; 王本新
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2018-07-27
Filing date: 2018-07-27
Publication date: 2021-06-29
Anticipated expiration: 2038-07-27
Also published as: CN109419334A

Abstract

The application provides a cooking utensil and coil panel subassembly thereof, this cooking utensil still includes interior pot, heat preservation cover and is located pot and heat preservation cover between the coil panel subassembly. The coil panel assembly comprises a supporting piece and a coil panel seat, wherein the coil panel seat is provided with a bottom wall, the supporting piece is assembled on the upper side of the bottom wall of the coil panel seat, the bottom wall supports the supporting piece, and the coil is located on the bottom side of the bottom wall of the coil panel seat. The supporting piece is abutted against the bottom surface of the inner pot to support the inner pot, and the coil disc seat is pressed downwards on the heat-insulating cover. This application is by the pot in the supporting seat supports, compares and supports by whole coil panel subassembly, can practice thrift manufacturing cost; and the support of the support by the bottom wall is more smooth.

Description

Cooking utensil and coil panel assembly thereof

Technical Field

The present application relates to a cooking appliance and a coil panel assembly thereof.

Background

More and more cooking appliances employ a coil panel as a heating element, which is generally disposed between an inner pot and a heat-retaining cover for heating the inner pot. In the cooking process of the electric pressure cooker product, the inner cooker can be driven by pressure to move downwards along with the rise of the pressure in the cooker, so that a structure for supporting the inner cooker is required to be arranged at the bottom of the electric pressure cooker. In the prior art, a coil panel is used for supporting. The coil panel is provided with the electromagnetic coil, an insulating material is used, the requirement of high temperature resistance is met, and the mechanical performance required by supporting the inner pot is met, so that the whole coil panel is manufactured by polyphenylene sulfide (PPS) plastic, but the cost for manufacturing the coil panel by using the PPS plastic material is high, the process is complex, and the production efficiency is low. In addition, CN 201610634865.2 discloses a cooking utensil and a coil panel assembly, wherein the coil panel assembly is provided with a supporting member, the top surface of the supporting member is in contact with the inner pan, the top surface is a plane, and the heating area is small.

Therefore, there is a need for an improvement of the existing cooking appliance.

Disclosure of Invention

The application provides a coil panel subassembly and cooking utensil that pot and with low costs in can well supporting.

Specifically, the method is realized through the following technical scheme: a coil panel assembly of a cooking appliance comprises a support piece, a coil panel seat and a coil, wherein the coil panel seat is provided with a bottom wall, the support piece is assembled on the upper side of the bottom wall of the coil panel seat, the bottom wall supports the support piece, and the coil is located on the bottom side of the bottom wall of the coil panel seat. The inner pot is supported by the supporting seat, and compared with the supporting of the whole coil panel component, the manufacturing cost can be saved; and the support of the support by the bottom wall is more smooth.

According to one embodiment of the application, the support comprises an annular body. The annular main body enables the supporting piece to form a whole, and assembly is convenient.

According to one embodiment of the application, the support comprises a boss projecting upwards from the annular body, the annular body of the support being assembled and fixed to the bottom wall, the top surface of the boss being higher than the upper surface of the bottom wall.

According to one embodiment of the application, the boss of the support is provided with a sunken step dividing the top surface into a contact surface and a step surface. The contact area between the top surface and the inner pot can be reduced by the step surface, and the service life of the supporting piece is prolonged.

According to one embodiment of the present application, the step face has a width of 2-4mm and a sinkage height of 1-2 mm.

According to one embodiment of the application, the bottom wall of the coil disc seat is provided with an annular groove, in which the annular body of the support is placed. The groove can prevent the support from shaking.

According to an embodiment of the application, support piece still includes certainly a plurality of installation departments of annular main part downwardly extending, coil disk seat is equipped with a plurality of mounting holes, support piece's installation department inserts in the mounting hole, the bottom surface of installation department supports presses on the diapire of mounting hole. The mounting hole can prevent the support from rotating in the groove.

According to an embodiment of the application, the installation department is equipped with the screw hole, the screw pass the diapire of mounting hole with the screw hole cooperation is in order to be fixed with support piece is to on the coil panel seat.

According to an embodiment of the application, the installation department with the boss corresponds from top to bottom and inwards extends respectively and forms a location portion with interconnect, location portion protrusion sets up in the inner circle of annular main part, the mounting hole is including being located the locating hole of recess one side, location portion stretches into in the locating hole. The positioning hole can prevent the supporting piece from rotating in the groove.

According to one embodiment of the application, the top surface of the support and/or the upper surface of the bottom wall of the coil tray are spherical. The whole heating area can be increased, and the heat loss in the heating process is reduced.

According to an embodiment of the application, the coil disc assembly is further provided with a winding frame, the winding frame is fixed on the bottom side of the coil disc seat, a wire groove is formed in the upper surface of the winding frame in a concave mode, and the coil is wound and fixed in the wire groove.

According to one embodiment of the application, the support partially overlaps the coil on a horizontal projection plane.

According to one embodiment of the application, the top surface of the bobbin is spherical. Heating is more uniform, and the heating area can be increased.

According to one embodiment of the application, the top surface of the support member is provided with a contact surface, the bottom surface of the coil base is provided with a support surface, the circumferential length dimension of the contact surface is a, the circumferential length dimension of the support surface is b, and a is smaller than b. A better supporting effect can be achieved.

According to an embodiment of the application, the support surface at least partially overlaps the corresponding contact surface on a horizontal projection plane.

According to an embodiment of the application, the centre line of the support surface overlaps the projection of the centre line of the corresponding contact surface on a horizontal plane.

According to one embodiment of the application, b is 2-6mm larger than a.

This application still provides another technical scheme, a cooking utensil, covers including interior pot and heat preservation, and the pot holds in this heat preservation covers in this, and this cooking utensil still includes aforementioned coil panel subassembly, and this coil panel subassembly is fixed the bottom of heat preservation cover is located in this between pot bottom and this heat preservation cover bottom in order to heat the interior pot, support piece with the bottom surface conflict of interior pot is used for supporting this interior pot, coil panel seat still includes a plurality of support columns, the support column downwardly extending supports and presses on the heat preservation cover to support this coil panel subassembly. The inner pot is supported by the supporting seat, and compared with the supporting of the whole coil panel component, the manufacturing cost can be saved. And the support of the support by the bottom wall is more smooth.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a perspective view of a cooking appliance according to an embodiment of the present application.

Fig. 2 is a partially exploded perspective view of the cooking appliance shown in fig. 1.

Fig. 3 is a cross-sectional view of the cooking appliance shown in fig. 1.

Fig. 4 is a partially enlarged view of fig. 3.

Fig. 5 is a perspective view of a coil disc assembly and a heat retaining cover of the cooking appliance shown in fig. 1.

Fig. 6 is a partially enlarged view of fig. 5.

Fig. 7 is a top view of a support of a coil pan assembly of the cooking appliance of fig. 1.

Fig. 8 is a schematic view of a contact surface and a support surface of a coil disc assembly of the cooking appliance of fig. 1.

Description of reference numerals:

the pot body 1, the pot cover 2, the inner pot 11, the heat preservation cover 12, the outer shell 13, the supporting piece 31, the annular main body 310, the mounting part 312, the boss 313, the positioning part 314, the top surface 315, the contact surface 316, the step surface 317, the threaded hole 318, the coil disc seat 32, the base body 320, the supporting column 321, the bottom wall 322, the side wall 323, the groove 324, the mounting hole 325, the positioning hole 326, the supporting surface 327, the upper surface 328, the winding frame 33, the wire groove 331, the through hole 332, the top surface 335, the supporting surface 327

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of devices, systems, apparatuses, and methods consistent with certain aspects of the present application, as detailed in the appended claims.

Referring to fig. 1 and 2, fig. 1 is a perspective view of a cooking appliance according to an embodiment of the present application, and fig. 2 is a partially exploded perspective view of the cooking appliance. The utility model provides a cooking utensil includes the pot body 1 and pot cover 2, pot body 1 is including interior pot 11, heat preservation cover 12 and shell 13, and this interior pot 11 holds in this heat preservation cover 12, and this heat preservation cover 12 is located this shell 13. A cooking cavity is formed between the inner pot 11 and the pot cover 2.

This cooking utensil still includes coil panel component 3, and this coil panel component 3 is located between this interior pot 11 bottom and this heat preservation cover 12 bottom for heat this interior pot 11. The coil disk assembly 3 includes a support ring 31, a coil disk holder 32, a bobbin 33, and a coil (not shown). The support 31 is assembled and fixed to the top side of the coil disk seat 32; the bobbin 33 is assembled and fixed to the bottom side of the coil bobbin 32. The support member 31 is supported on the upper side of the coil disk holder 32, and the coil disk assembly 3 is supported on the heat insulating cover 12 through the coil disk holder 32.

Referring to fig. 3 and 4, fig. 3 is a cross-sectional view of the cooking appliance, and fig. 4 is a partially enlarged view of fig. 3. The support member 31 supports the inner pot 11 with its top surface in contact with the bottom of the inner pot 11. The cooking appliance is in this embodiment an electric pressure cooker, which will be driven to move downwards during cooking as the pressure in the cooker increases. The pressure exerted by the gas in the cooking utensil pot on the inner pot 11 is transmitted to the heat-insulating cover 12 through the support 31 and the coil base 32. The heat-insulating cover 12 is made of metal, so that the heat-insulating cover can bear large pressure.

The coil base 32 in the application does not need to be in contact with the inner pot, so PPS plastic does not need to be used, and common heat-resistant plastic is used. Compared with the scheme that the inner pot 11 is supported by the integral coil base 32 made of PPS material, the inner pot 11 is supported by the supporting piece 31, so that the manufacturing cost can be saved. The supporting piece 31 is made of plastic high-temperature-resistant material, so that compared with a metal supporting piece, the processing and production cost is reduced; and plastic component heat conduction is lower than the metalwork, and the support piece 31 of this application can reduce the heat conductivity, can reduce the heat loss of coil, promotes the heating effect. The supporting member 31 is preferably made of PPS plastic (polyphenylene sulfide) which can resist high temperature and has good rigidity.

The detailed structure of the support 31 and the coil holder 32 will be described in detail.

Referring to fig. 2, the supporting member 31 is a one-piece member, and includes a ring-shaped body 310 and a plurality of mounting portions 312 extending downward from the ring-shaped body 310. The upper surface of the ring-shaped body 310 is provided with a plurality of bosses 313, and the top surfaces 315 of the bosses 313 are abutted against the bottom surface of the inner pot 11 to support the inner pot 11. The annular body 310 makes the support 31 a one-piece, easy to assemble. The mounting portions 312 correspond to the bosses 313 up and down and extend inward to be connected with each other to form a positioning portion 314. The positioning portion 314 is protrudingly provided in the inner race of the ring body 310.

With continued reference to fig. 2, the coil holder 32 includes a base 320 and a plurality of support posts 321. The base body 320 is provided with a bottom wall 322 and a ring-shaped side wall 323, the side wall 323 extends upwards from the outer edge of the bottom wall 322, the bottom wall 322 is provided with a groove 324 at a position close to the side wall 323, and the groove 324 is ring-shaped and is arranged around the outer edge of the bottom wall 322. The supporting column 321 extends downward from the bottom surface of the bottom wall 322 and presses against the bottom wall of the heat-insulating cover 12 to support the coil panel assembly 3.

According to an embodiment of the present application, the coil base 32 is further provided with a plurality of mounting holes 325 recessed downward from the top surface of the bottom wall 322. The outer side portion of the mounting hole 325 overlaps the groove 324 and is formed to be further recessed downward from the groove 324 when viewed from the top; the inner portion forms a positioning hole 326 located inside the groove 324.

As shown in fig. 3 and 4, the supporting member 31 is assembled downward to the base 320, is located on the upper side of the bottom wall 322 of the coil seat 32, and is supported by the bottom wall 322, and the coil is located on the bottom side of the bottom wall 322 of the coil seat. The annular main body 310 of the support 31 is mounted on the bottom wall 322 of the coil seat 32, the annular main body 310 of the support 31 is embedded in the annular groove 324, and the support 31 is prevented from shaking by the positioning of the annular groove 324. The top surface 315 of the projection 313 is higher than the upper surface of the bottom wall 322 for contacting with the bottom surface of the inner pot 11. The mounting portion 312 of the supporting member 31 is inserted into the mounting hole 325, and the bottom surface of the mounting portion 312 is pressed against the bottom surface of the mounting hole 325, so that the supporting member 31 is supported by the coil base 32. The positioning portion 314 of the supporting member 31 extends into the positioning hole 326 to prevent the supporting member 31 from rotating in the groove 324.

Referring to fig. 5, fig. 5 is a combined perspective view of the coil disc assembly 3 and the heat retaining cover 12 of the cooking appliance, and fig. 6 is a partially enlarged view of fig. 5. According to an embodiment of the present application, for more reliable fixing of the supporting member 31, a locking member, such as a screw, may be further provided. The mounting portion 312 of the support 31 is provided with a screw hole 318, and a screw (not shown) is screwed into the screw hole 318 of the mounting portion 312 of the support 31 from below the coil disk seat 32 through the bottom wall of the mounting hole 325, thereby securely fixing the support 31 to the coil disk seat 32. The supporting member 31 is fixed on the coil plate 32 to facilitate the transportation and assembly of the coil plate assembly 3, and the bobbin 33 is also locked on the coil plate 32. By this mounting the coil disc assembly 3 is assembled first, inside said heat-retaining cover 12 as a whole to the cooking appliance.

Referring to fig. 6 in combination with fig. 3, in the present embodiment, the bottom of the inner pot 11 is spherical, and the top surface 315 of the boss 313 of the supporting member 31 is a concave spherical surface corresponding to the shape of the bottom of the inner pot 11, so as to fit the bottom of the inner pot 11, thereby achieving good supporting and heating effects. The top surface 315 is provided with a sunken step near the inner side edge thereof, and the step divides the top surface 315 into a contact surface 316 contacting the inner pot 11 and a step surface 317 not contacting the inner pot 11. The contact surface 316 is a concave spherical surface corresponding to the bottom of the inner pan 11. As an embodiment of the present application, the width of the step face 317 is designed to be 2 to 4mm, preferably 3 mm; the height of the sink is 1-2mm, preferably 1 mm.

Because this cooking utensil during operation, contact surface 316 needs the interior pot 11 that the long-time contact is in high temperature state, and the bigger life of area of contact is shorter, for increasing support piece 31's life-span, this application has increased in the inboard of this top surface 315 step face 317 reduces this support piece 31 and this interior pot 11's area of contact, and the reducible heat transfer of less area of contact avoids this support piece 31 to appear hot melt, phenomenons such as deformation, can prolong support piece 31's life-span, the better stability of having guaranteed this cooking utensil.

In other alternative embodiments, the step surface 317 may be disposed at the outer side or the middle of the top surface 315, and both of them may perform the function of reducing the contact area, and therefore, the specific location of the step surface 317 is not limited.

Referring to fig. 2 to 6, as mentioned above, the bottom of the inner pot 11 is spherical, and the top surface 315 of the supporting member 31 is configured to be a concave spherical surface corresponding to the shape of the bottom of the inner pot 11, so as to increase the heating area and improve the heating effect. The bottom surface of the inner pot 11 is not in contact with the coil tray 32, but the upper surface 328 of the bottom wall 322 of the coil tray 32 is also designed to be a concave spherical surface corresponding to the inner pot 11. Accordingly, the top surface 335 of the bobbin 33 on which the coil is disposed is also a concave spherical surface. The coils disposed on the top surface 335 of the bobbin 33 are also formed into a concave spherical structure accordingly. By adopting the design mode, circulation can be generated in the heating process, so that the heating is more uniform, and a better cooking effect is obtained. The whole heating area can be increased, and the heat loss in the heating process is reduced. As an embodiment of the present application, the lower surface of the annular body 310 of the support 31 is also spherical; the lower surface of the bottom wall 322 of the coil base 32 is also spherical, so that the thickness of the annular body 310 and the bottom wall 322 is uniform, and uniform heating is realized.

In this embodiment, the inner pot 11 protrudes outward to form a spherical bottom, so the upper surfaces of the supporting member 31, the coil seat 32 and the bobbin 33 are all set to be concave spherical surfaces; if the bottom of the inner pot 11 is a concave sphere, the upper surfaces of the supporting member 31, the coil seat 32 and the bobbin 33 may be convex spheres.

In this embodiment, a slot 331 is formed on the upper surface of the bobbin 33, and the coil is wound and fixed in the slot 331 of the bobbin 33 in a circle. The bottom surface of the bobbin 33 may be further provided with a magnetic strip (not shown). The bobbin 33 is provided at an edge thereof with a through hole 332 through which a screw is fastened to the bottom side of the coil holder 32 to securely fix the bobbin 33 to the coil holder 32. Alternatively, the coil may be disposed on the bottom surface of the coil base 32, or may be clamped and fixed by the coil base 32 and the bobbin 33.

According to an embodiment of the present application, the support 31 covers a part of the wire slot 331 of the bobbin 33 when viewed from a top view, that is, the support 31 overlaps a part of the coil located at the edge of the bobbin 33 on a horizontal projection plane. In particular, the ring-shaped body 310 is partially overlapped with the coil on the horizontal projection plane. . With this arrangement, since the supporting member 31 does not need to escape from the coil, the design size can be enlarged appropriately, thereby increasing the area of the contact surface 316 of the supporting member 31 for contacting with the inner pan 11 and improving the supporting strength. Since the supporting member 31 is made of plastic material, it does not affect the electromagnetic field generated by the coil, so it can be overlapped.

Referring to fig. 7 and 8, fig. 7 is a top view of the supporting member 31, and fig. 8 is a schematic view of the contact surface 316 and the supporting surface 327 of the coil panel assembly 3. Fig. 8 is a schematic horizontal plane projection diagram of the coil panel assembly 3, wherein the solid line part is a projection of a contact surface 316 of the supporting member 31 of the coil panel assembly 3 contacting the inner pan 11, and the dotted line part is a projection of a region of the coil panel base 32 contacting the heat insulating cover 13, which may also be referred to as a projection of a supporting surface 327.

The supporting surface 327 is located right below the contact surface 316, and the supporting surface 327 and the corresponding contact surface 316 at least partially overlap on a horizontal plane projection plane. The centerline of the bearing surface 327 overlaps the centerline of the contact surface 316. The contact surface 316 has a circumferential length dimension a in the annular direction and the support surface 327 has a circumferential length dimension b in the annular direction, wherein a is less than b. In a preferred embodiment, b is 2-6mm greater than a. This size design makes holding surface 327 wider on the annular direction, makes heat preservation cover 12 supports this interior pot 11 better, improves the bearing strength, has strengthened the stability of product. In addition, the contact surface 316 is slightly narrow in the annular direction, so that the contact area between the supporting member 31 and the inner pot 11 can be reduced, and the service life can be prolonged.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. The utility model provides a cooking utensil's coil panel subassembly, includes support piece, coil panel seat and coil, its characterized in that: the coil disc seat is provided with a bottom wall, the support piece is assembled on the upper side of the bottom wall of the coil disc seat, the bottom wall supports the support piece, the support piece comprises an annular main body and a boss protruding upwards from the annular main body, and the top surface of the boss is higher than the upper surface of the bottom wall; the coil disc assembly is further provided with a winding frame located on the bottom side of the coil disc seat, a wire slot is concavely formed in the upper surface of the winding frame, and the coil is wound and fixed in the wire slot and located on the bottom side of the bottom wall of the coil disc seat.

2. A coil disk assembly of a cooking appliance as claimed in claim 1, wherein: the annular body is assembled and fixed to the bottom wall.

3. A coil tray assembly for a cooking appliance according to claim 2, wherein: the boss of the support member is provided with a sunken step, and the top surface is divided into a contact surface and a step surface by the step.

4. A coil tray assembly of a cooking appliance as claimed in claim 3, wherein: the width of the step surface is 2-4mm, and the sinking height is 1-2 mm.

5. A coil disk assembly of a cooking appliance as claimed in claim 1, wherein: the bottom wall of the coil disc seat is provided with an annular groove, and the annular main body of the supporting piece is arranged in the groove.

6. A coil tray assembly of a cooking appliance as claimed in claim 5, wherein: support piece still includes certainly a plurality of installation departments of annular main part downwardly extending, coil disk seat is equipped with a plurality of mounting holes, support piece's installation department inserts in the mounting hole, the bottom surface of installation department supports and presses on the diapire of mounting hole.

7. A coil tray assembly for a cooking appliance according to claim 6, wherein: the installation department is equipped with the screw hole, the screw pass the diapire of mounting hole with the screw hole cooperation is in order with support piece is fixed extremely on the coil disk seat.

8. A coil tray assembly for a cooking appliance according to claim 6, wherein: the installation department with the boss corresponds from top to bottom and inwards extends respectively and forms a location portion with interconnect, location portion protrusion sets up in the inner circle of annular main part, the mounting hole is including being located the locating hole of recess one side, location portion stretches into in the locating hole.

9. A coil disk assembly of a cooking appliance as claimed in claim 1, wherein: the top surface of the supporting piece and/or the upper surface of the bottom wall of the coil base are spherical surfaces.

10. A coil disk assembly of a cooking appliance as claimed in claim 1, wherein: the winding frame is fixed on the bottom side of the coil disc seat.

11. A coil disk assembly of a cooking appliance as claimed in claim 1, wherein: the support and the coil partially overlap on a horizontal projection plane.

12. A coil tray assembly for a cooking appliance according to claim 10, wherein: the top surface of the bobbin is spherical.

13. A coil disk assembly of a cooking appliance as claimed in claim 1, wherein: the top surface of the supporting piece is provided with a contact surface, the bottom surface of the coil disc seat is provided with a supporting surface, the circumferential length of the contact surface is a, the circumferential length of the supporting surface is b, and a is smaller than b.

14. A coil tray assembly for a cooking appliance according to claim 13, wherein: the supporting surface and the corresponding contact surface are at least partially overlapped on a horizontal projection plane.

15. A coil pan assembly of a cooking appliance as claimed in claim 14, wherein: the center line of the supporting surface is overlapped with the projection of the center line of the corresponding contact surface on the horizontal plane.

16. A coil tray assembly for a cooking appliance according to claim 13, wherein: the b is 2-6mm larger than the a.

17. The utility model provides a cooking utensil, includes interior pot and heat preservation cover, and this interior pot holds in this heat preservation cover its characterized in that: the cooking utensil further comprises a coil panel assembly as claimed in any one of claims 1 to 16, the coil panel assembly is fixed at the bottom of the heat-insulating cover and positioned between the bottom of the inner pot and the bottom of the heat-insulating cover to heat the inner pot, the supporting piece is abutted with the bottom surface of the inner pot to support the inner pot, and the coil panel seat further comprises a plurality of supporting columns which extend downwards and are abutted against the heat-insulating cover to support the coil panel assembly.