CN215336498U

CN215336498U - Electromagnetic heating appliance

Info

Publication number: CN215336498U
Application number: CN202120042203.2U
Authority: CN
Inventors: 朱泽春; 刘斌; 金立旺; 谢伟峰
Original assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Current assignee: Hangzhou Joyoung Household Electrical Appliances Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-12-28
Anticipated expiration: 2031-01-07

Abstract

The utility model discloses an electromagnetic heating appliance, which solves the technical problem that when the existing electromagnetic heating appliance is placed on a metal sheet to work, the metal sheet is reversely heated so that the metal sheet is raised.

Description

Electromagnetic heating appliance

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of kitchen appliances, in particular to an electromagnetic heating appliance.

[ background of the utility model ]

The electromagnetic heating device utilizes the current to generate a magnetic field through the coil, when the magnetic line of force of the magnetic field passes through the iron pan, the magnetic induction line cuts to generate vortex and collides with the pan to generate heat so as to achieve the purpose of heating food in the pan, thus having the advantages of rapid heating, no open fire, safety, convenience and the like, and being more and more popular and accepted by consumers.

When an existing electromagnetic heating appliance is placed on an operation table surface provided with a metal sheet to work, due to the fact that a generated magnetic field surrounds the electromagnetic heating appliance, a magnetic induction line penetrates through the metal sheet below the electromagnetic heating appliance, the metal sheet is caused to be in contact with a base of the electromagnetic heating appliance after being heated and expanded, the base is deformed, and when the metal sheet is heated seriously, the base is even caused to be molten or cause fire risks.

[ Utility model ] content

The present invention is directed to overcome the disadvantages of the prior art and to provide an electromagnetic heating device, wherein a safety ring is protruded on the bottom surface of a housing to press a metal sheet, thereby effectively preventing the metal sheet from being expanded and tilted, and preventing the heated metal sheet from contacting the bottom surface of the housing to deform or melt the housing.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an electromagnetic heating appliance comprises a shell and an electromagnetic wire coil arranged in the shell, wherein a safety ring is convexly arranged on the bottom surface of the shell and corresponds to the electromagnetic wire coil.

Furthermore, a plurality of heat dissipation channels communicated with the inside and the outside of the safety ring are arranged at intervals in the circumferential direction of the safety ring.

Furthermore, the number of the heat dissipation channels is 50-100.

Furthermore, the bottom wall of the shell is partially arched downwards to form the safety ring, the bottom surface of the safety ring is partially sunken upwards to form a heat dissipation groove, and the heat dissipation channel is formed inside the heat dissipation groove.

Furthermore, the longitudinal section of the safety ring is V-shaped or trapezoid with wide top and narrow bottom.

Furthermore, the safety ring is an annular plate which is formed by independent machining, the annular plate is fixed on the bottom surface of the shell, a plurality of heat dissipation holes or heat dissipation notches are formed in the annular plate at intervals in the circumferential direction, and the heat dissipation holes or the heat dissipation notches form the heat dissipation channel.

Furthermore, a safety gap is arranged between the bottom surface of the safety ring and the working table surface.

Furthermore, the safety clearance is 2 mm-10 mm.

Furthermore, the electromagnetic wire coil comprises a wire coil bracket and an electromagnetic induction coil wound on the wire coil bracket, the area of the electromagnetic induction coil is S1, the area enclosed by the safety ring is S2, and S2 is more than 0.3S1 and less than 1.5S 1.

Further, the electromagnetic wire coil includes the drum support and is in around the dress electromagnetic induction coil on the drum support, the internal diameter of safety ring with the external diameter of electromagnetic induction coil differs the absolute value and is not more than 5 cm.

The utility model has the beneficial effects that:

in the utility model, the bottom surface of the shell is convexly provided with the safety ring, and the safety ring is arranged corresponding to the electromagnetic wire coil. Because the part of the metal sheet corresponding to the electromagnetic wire coil is heated most seriously, the safety ring is arranged corresponding to the electromagnetic wire coil and can press the metal sheet through the safety ring so as to effectively prevent the metal sheet from expanding and warping, thereby avoiding the deformation or melting of the shell caused by the contact of the heated metal sheet with the bottom surface of the shell; in addition, the smoothness and the appearance of the operating table top are effectively ensured; secondly, because the electromagnetic wire coil fixed stay is on the diapire of casing, consequently the safety ring corresponds the electromagnetic wire coil setting, also can effectively strengthen the structural strength of casing diapire to realize the stable stay to the electromagnetic wire coil, guarantee electromagnetic wire coil's working distance.

A plurality of heat dissipation channels communicated with the inside and the outside of the safety ring are arranged at intervals in the circumferential direction of the safety ring. By the design, hot air in the safety ring and cold air outside the safety ring can generate convection through the heat dissipation channel, so that the temperature of the metal sheet and the bottom of the shell is reduced, and the expansion and upwarp of the metal sheet and the overheating and melting of the bottom of the shell are effectively prevented.

The number of the heat dissipation channels is 50-100. By the design, the cooling effect on the metal sheet and the bottom of the shell can be effectively improved; but also can ensure the structural strength of the safety ring so as to avoid the pressing failure of the metal sheet caused by the deformation of the safety ring.

The bottom wall of the shell is partially arched downwards to form a safety ring, the bottom surface of the safety ring is partially sunken upwards to form a heat dissipation groove, and a heat dissipation channel is formed inside the heat dissipation groove. By the design, the assembling steps are reduced, and the assembling efficiency is improved; in addition, the design scheme of the heat dissipation groove also avoids the communication between the heat dissipation channel and the inside of the shell, and further avoids foreign matters such as water, oil and the like from entering the inside of the shell.

The safety ring has a V-shaped or trapezoid shape with a wide upper part and a narrow lower part. So design, can strengthen the structural strength of collar to guarantee to effectively press the sheet metal, and then effectively prevent that the sheet metal inflation from upwarping.

A safety gap is arranged between the bottom surface of the safety ring and the working table surface. So design has increased the flow area between the safety ring is inside and outside to make the interior hot-air of safety ring and the outer cold air of safety ring still can produce the convection current through the safety clearance, and then further promote the cooling effect to sheet metal and casing bottom.

The safety clearance is 2 mm-10 mm. By the design, the situation that the electromagnetic heating appliance cannot be stably placed due to machining errors can be avoided, the heat dissipation and cooling effects on the metal sheet and the bottom of the shell can be guaranteed, and in addition, the situation that the metal sheet can be tilted to a large height due to overlarge safety clearance can be avoided.

The electromagnetic wire coil comprises a wire coil bracket and an electromagnetic induction coil wound on the wire coil bracket, the area of the electromagnetic induction coil is S1, the area enclosed by the safety ring is S2, and S2 is more than 0.3S1 and less than 1.5S 1. By the design, the metal sheet can be effectively pressed by the safety ring, the metal sheet is prevented from being warped to contact the bottom surface of the shell, and the material cost of the safety ring can be reduced.

The electromagnetic wire coil comprises a wire coil support and an electromagnetic induction coil wound on the wire coil support, and the absolute value of the difference between the inner diameter of the safety ring and the outer diameter of the electromagnetic induction coil is not more than 5 cm. So design, both can avoid the safety ring too big time and the installation of other structures in the casing to produce and interfere to and sheet metal rises to stick up and contacts the casing bottom surface, can avoid the safety ring too little to cause press to proof warp the effect unsatisfactory to sheet metal again.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic structural diagram of a base with an electromagnetic wire coil installed thereon, which is placed on a metal sheet according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

FIG. 3 is a bottom view of the base in accordance with one embodiment of the present invention;

fig. 4 is a partially enlarged schematic view of a safety ring according to a first embodiment of the utility model.

Reference numerals:

100. an electromagnetic wire coil; 200. a support leg; 300. a metal thin plate; 400. a safety ring; 410. a heat sink; 500. a base; 600. a heat dissipation gap.

[ detailed description ] embodiments

The utility model provides an electromagnetic heating appliance which comprises a shell and an electromagnetic wire coil arranged in the shell, wherein a safety ring is convexly arranged on the bottom surface of the shell and corresponds to the electromagnetic wire coil. Because the part of the metal sheet corresponding to the electromagnetic wire coil is heated most seriously, the safety ring is arranged corresponding to the electromagnetic wire coil and can press the metal sheet through the safety ring so as to effectively prevent the metal sheet from expanding and warping, thereby avoiding the deformation or melting of the shell caused by the contact of the heated metal sheet with the bottom surface of the shell; in addition, the smoothness and the appearance of the operating table top are effectively ensured; secondly, because the electromagnetic wire coil fixed stay is on the diapire of casing, consequently the safety ring corresponds the electromagnetic wire coil setting, also can effectively strengthen the structural strength of casing diapire to realize the stable stay to the electromagnetic wire coil, guarantee electromagnetic wire coil's working distance.

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Example one

Referring to fig. 1 to 4, the electromagnetic heating device in the present embodiment may be an electromagnetic oven, an electric ceramic oven or a heat retainer, and taking the electromagnetic oven as an example, the electromagnetic oven includes a housing, an electromagnetic wire coil 100, a main control board and a heat dissipation fan are disposed in the housing, an air inlet is disposed at the bottom of the housing corresponding to the heat dissipation fan, a support leg 200 is disposed on the housing, and the support leg 200 is supported on a metal sheet 300, so that an air inlet channel is formed between the bottom of the housing and the metal sheet 300. In the embodiment, the safety ring 400 is arranged on the bottom surface of the shell in a protruding manner, the safety ring 400 is arranged corresponding to the electromagnetic wire coil 100, and the part of the metal sheet 300 corresponding to the electromagnetic wire coil 100 is heated most seriously, so that the safety ring 400 is arranged corresponding to the electromagnetic wire coil 100, the metal sheet 300 can be pressed by the safety ring 400, and the metal sheet 300 is effectively prevented from expanding and warping, so that the deformation or melting of the shell caused by the contact of the heated metal sheet 300 with the bottom surface of the shell is avoided; in addition, the smoothness and the appearance of the operating table top are effectively ensured; secondly, because the electromagnetic wire coil 100 is fixedly supported on the bottom wall of the shell, the safety ring 400 is arranged corresponding to the electromagnetic wire coil 100, and the structural strength of the bottom wall of the shell can be effectively enhanced, so that the electromagnetic wire coil 100 can be stably supported, and the working distance of the electromagnetic wire coil 100 can be ensured.

Specifically, the housing in this embodiment includes a base 500 and an upper cover assembly (not shown in the drawings), the bottom wall of the base 500 is partially arched downward to form the safety ring 400, the bottom surface of the safety ring 400 is partially recessed upward to form a plurality of heat dissipation grooves 410 circumferentially spaced, and heat dissipation channels are formed inside the heat dissipation grooves 410 and communicated with the inside and the outside of the safety ring 400. Therefore, the hot air in the safety ring 400 and the cold air outside the safety ring 400 can generate convection through the heat dissipation channel, so as to reduce the temperature of the metal sheet 300 and the base 500, and effectively prevent the metal sheet 300 from expanding and warping and the base 500 from being melted by overheating; in addition, the safety ring 400 and the base 500 are integrally processed and formed, so that the assembly steps are reduced, and the assembly efficiency is improved; finally, because safety ring 400 is inside to be hollow structure, the heat dissipation channel design in this scheme has also avoided heat dissipation channel and the inside intercommunication of casing, and then has avoided inside water, oil foreign matter gets into the casing.

Preferably, the number of the heat dissipation channels in the present embodiment is 50 to 100. When the number of the heat dissipation channels is less than 50, the flow area inside and outside the safety ring 400 is small, and the cooling effect on the metal sheet 300 and the base 500 is not obvious; when the number of the heat dissipation channels is greater than 100, the rib positions between two adjacent heat dissipation grooves 510 become thin, so that the structural strength of the rib positions is reduced, and the rib positions are easily deformed when being heated, thereby losing the pressing effect on the metal sheet 300; therefore, the number of the heat dissipation channels in the embodiment is preferably 80, and by adopting the design, the cooling effect on the metal sheet 300 and the base 500 can be effectively improved; but also the structural strength of the safety ring 400 is ensured to prevent the safety ring 400 from deforming to cause the pressing failure of the metal sheet 300. Of course, the number of the heat dissipation channels may be, but is not limited to, 50, 60, 70, 90, 100, etc.

Preferably, the safety ring in this embodiment has a V-shaped or narrow-down trapezoid longitudinal section, and with such a design, the structural strength of the mounting ring 400 can be further enhanced, so as to ensure that the metal sheet 300 is effectively pressed, and further effectively prevent the metal sheet 300 from expanding and warping.

In addition, in the embodiment, the safety gap 600 is provided between the bottom surface of the safety ring 400 and the working platform, that is, the safety gap 600 is provided between the safety ring 400 and the metal sheet 300, so that the flow area between the inside and the outside of the safety ring 400 is increased, and the hot air in the safety ring 400 and the cold air outside the safety ring 400 can also generate convection through the safety gap 600, thereby further improving the cooling effect on the metal sheet 300 and the base 500.

The height H of the safety clearance 600 in this embodiment is 2mm to 10 mm. When the H is less than 2mm, the bottom surface of the safety ring is lower than the support legs easily due to processing errors, so that the electromagnetic heating appliance is not stably placed, and the heat dissipation and cooling effects on the metal sheet 300 and the base 500 are reduced; when H is greater than 10mm, the anti-tilting effect of the safety ring 400 on the metal sheet 300 is poor, that is, the tilting height of the metal sheet 300 is increased; therefore, the preferred H in the embodiment is 5mm, and by adopting the design, the situation that the electromagnetic heating appliance cannot be stably placed due to machining errors can be avoided, and the heat dissipation and cooling effects on the metal sheet 300 and the base 500 can be guaranteed; in addition, the metal sheet 300 can be prevented from being tilted too much. Of course, H may also be, but is not limited to, 2mm, 3mm, 4mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., alternatively.

Next, the electromagnetic wire coil 100 in this embodiment includes a wire coil holder and an electromagnetic induction coil wound on the wire coil holder, an area of the electromagnetic induction coil is S1, an area surrounded by the safety ring is S2, and it satisfies 0.3S1 < S2 < 1.5S 1. When the S2 is less than 0.3S1, the inner diameter of the safety ring 400 is too small, so that the part for pressing the metal sheet 300 is small, and the part of the metal sheet 300, which corresponds to the electromagnetic wire coil 100 and is located outside the safety ring 400, is still expanded and tilted; when S2 is greater than 1.5S1, not only the safety ring 400 shields a portion of the air inlet, but also the portion of the metal sheet 300 corresponding to the electromagnetic wire coil 100 is entirely located in the safety ring 400, so that the possibility that the metal sheet 300 will contact the base 500 after being tilted due to thermal expansion is increased. Therefore, the S2 in this embodiment is preferably 0.9S1, so as to effectively ensure that the safety ring 400 can press the metal sheet 300, prevent the metal sheet 300 from tilting and contacting the base 500, and reduce the material cost of the safety ring 400. Of course, S2 may also be optional but not limited to 0.4S1, 0.5S1, 0.6S1, 0.7S1, 0.8S1, S1, 1.1S1, 1.2S1, 1.3S1, 1.4S 1.

Finally, the inside diameter of safety ring 400 is not more than 5cm with the external diameter of electromagnetic induction coil's difference absolute value in this embodiment, so design, both can avoid safety ring too big time and the installation of other structures in the casing to produce interference, shelter from partial intake and can't effectively prevent sheet metal 300 and warp contact base 500, can avoid safety ring too little to cause press to prevent warping the effect unsatisfactory to sheet metal 300 again.

It is understood that in other embodiments of the present invention, the safety ring is an annular plate formed by independent machining, the annular plate is screwed or welded to the bottom surface of the base, and the annular plate is provided with a plurality of heat dissipation holes or heat dissipation notches at intervals along the circumferential direction, and the heat dissipation holes or the heat dissipation notches form a heat dissipation channel.

While the utility model has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the utility model is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the utility model as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. The utility model provides an electromagnetic heating utensil, includes the casing and locates the electromagnetic wire coil in the casing, its characterized in that, the protruding safety ring that is equipped with in bottom surface of casing, the safety ring corresponds the electromagnetic wire coil sets up, safety ring circumference interval is equipped with the inside and outside heat dissipation channel of a plurality of intercommunication safety rings, the local downward hunch-up of diapire of casing forms the safety ring.

2. An electromagnetic heating appliance as claimed in claim 1 wherein said heat dissipation channels are 50 to 100 in number.

3. An electromagnetic heating device as claimed in claim 1, wherein the bottom surface of said safety ring is partially recessed upward to form a heat sink, and said heat sink forms said heat dissipation channel therein.

4. An electromagnetic heating device as claimed in claim 3, wherein said safety ring has a V-shaped or trapezoidal longitudinal cross-section with a wide top and a narrow bottom.

5. The electromagnetic heating device as claimed in claim 1, wherein the safety ring is an annular plate formed by independent machining, the annular plate is fixed on the bottom surface of the housing, the annular plate is provided with a plurality of heat dissipation holes or heat dissipation notches at intervals along the circumferential direction, and the heat dissipation holes or the heat dissipation notches form the heat dissipation channel.

6. An electromagnetic heating appliance as claimed in any one of claims 1 to 5 wherein a safety gap is provided between the underside of the safety ring and the countertop.

7. An electromagnetic heating appliance as claimed in claim 6 wherein said safety gap is between 2mm and 10 mm.

8. An electromagnetic heating appliance as claimed in any one of claims 1 to 5 wherein said electromagnetic coil comprises a coil support and an electromagnetic coil wound on said coil support, said electromagnetic coil having an area of S1, said safety ring defining an area of S2, 0.3S1 < S2 < 1.5S 1.

9. An electromagnetic heating appliance as claimed in any one of claims 1 to 5 wherein said electromagnetic coil includes a coil support and an electromagnetic induction coil wound on said coil support, said safety ring having an inner diameter which differs from an outer diameter of said electromagnetic induction coil by no more than 5cm in absolute terms.