CN207410544U - Electromagnetic oven - Google Patents

Abstract

The utility model provides an electromagnetic oven, include: panel (1), drain pan and coil panel (2), panel (1) lid is established on the drain pan, coil panel (2) are located panel (1) and drain pan enclose the cavity of forming, coil in coil panel (2) is including being close to inner ring region (21) at coil panel (2) center, keep away from outer loop region (22) at coil panel (2) center and be located middle zone (23) between inner ring region (21) and outer loop region (22), panel (1) coats and is stamped shielding layer (3), shielding layer (3) are located middle zone (23) of coil in the projection region on the vertical direction. The technical scheme provided by the utility model can reduce the manufacturing degree of difficulty and the cost of electromagnetism stove when realizing the even heating of pan.

Description

Electromagnetic oven

Technical field

The utility model is related to family's electro-technical field more particularly to a kind of electromagnetic ovens.

Background technology

Electromagnetic oven is that the magnetic force line cutting cookware generated using coil panel generates vortex current, the joule thermal effect of vortex current Cookware should be made to heat up, so as to fulfill heating.Electromagnetic oven is convenient and efficient due to heating, and does not have the advantages that open fire, it has also become people The very high a kind of cooking apparatus of frequency of use in life.

For existing electromagnetic oven when being heated, the magnetic field that coil panel generates is not to be evenly distributed in the bottom of cookware to add Thermal region, but compare concentration in certain region, so easily it is unevenly distributed the heat of cookware bottom, so as to influence The culinary art effect of cookware.To solve the above-mentioned problems, current electromagnetic oven be typically by change the distribution mode of coil panel come Change the Distribution of Magnetic Field of coil panel, the Distribution of Magnetic Field for making coil panel is relatively uniform, and then the uniformly heated effect of cookware.

But the method for the above-mentioned this distribution mode for changing coil panel, the manufacture difficulty of electromagnetic oven is not only increased, is gone back It increases manufacturing cost.

Utility model content

In view of this, the utility model provides a kind of electromagnetic oven, for realizing while being evenly heated of cookware, reduces The manufacture difficulty and cost of electromagnetic oven.

To achieve these goals, the utility model embodiment provides a kind of electromagnetic oven, including：Panel, bottom case and coil Disk, panel cover are located on bottom case, and coil panel is located in the cavity that panel is surrounded with bottom case, and the coil in coil panel is included by near line Enclose endocyclic area, the outer region away from coil disk center and the centre between endocyclic area and outer region of disk center Region is located in the intermediate region of coil covered with shielded layer, the view field of shielded layer in vertical direction on panel.

By setting shielded layer on panel, wherein, the view field of shielded layer in vertical direction is located in coil Between in region, so as to which shielded layer can weaken the magnetic field of the intermediate region of coil, make the magnetic field for acting on cookware bottom Distribution makes the heat of cookware bottom be distributed than more uniform than more uniform, reaches the uniformly heated effect of cookware；Moreover, During manufacture, one layer of low permeability magnetic material need to be only covered on panel and forms shielded layer, thus manufacture difficulty and system can be reduced Cause this.

As a kind of optional embodiment of the utility model embodiment, shielded layer is annular, and shielded layer is same with coil panel The heart is set.

By using ring shielding layer, shielded layer and coil panel are arranged concentrically, it can be with the manufacture of convenient electromagnetic stove, simultaneously Shield effectiveness can also be improved.

As a kind of optional embodiment of the utility model embodiment, the internal diameter of shielded layer is more than or equal to the outer diameter of coil 1/4, and less than or equal to coil outer diameter 2/3.

By the way that the internal diameter of shielded layer to be set greater than to 1/4 of the outer diameter equal to coil, and less than or equal to the outer diameter of coil 2/3, the stronger region of the magnetic field intensity of coil can be shielded, make the Distribution of Magnetic Field for acting on cookware bottom more equal It is even.

As a kind of optional embodiment of the utility model embodiment, the thickness range of shielded layer is 0.5-5mm.

By the way that the thickness range of shielded layer is arranged to 0.5-5mm, the shield effectiveness of shielded layer thereby may be ensured that.

As a kind of optional embodiment of the utility model embodiment, shielded layer is specifically covered in the upper surface of panel.

By the way that shielded layer to be arranged on to the upper surface of panel, can be played while the magnetic field of shielded coil disk is realized Heat-blocking action reduces the temperature that cookware bottom is transferred to panel, and then reduces the Wen Sheng inside electromagnetic oven, extends making for electromagnetic oven Use the service life.

As a kind of optional embodiment of the utility model embodiment, shielded layer is specifically covered in the lower surface of panel.

By the way that shielded layer to be arranged on to the lower surface of panel, shielded layer can be hidden, so as to improve to a certain extent The aesthetics of electromagnetic oven.

As a kind of optional embodiment of the utility model embodiment, shielded layer is made of low permeability magnetic material.

Shielded layer is made by using low permeability magnetic material, can preferably realize the shielding to the magnetic field of coil panel, simultaneously The caloric value of shielded layer can be reduced.

As a kind of optional embodiment of the utility model embodiment, shielded layer is specifically adopted and is formed from aluminium.

Shielded layer is made by using aluminium, the manufacture and fixation of shielded layer can be facilitated, while shielded layer can be reduced Caloric value.

The side for passing through spraying, silk-screen or stickup as a kind of optional embodiment of the utility model embodiment, shielded layer Formula is covered on panel.

As a kind of optional embodiment of the utility model embodiment, panel includes heating region and operating area, screen Layer is covered to be located in heating region.

In the above embodiment, panel includes heating region and operating area, can promote the aesthetics of electromagnetic oven.

The construction of the utility model and its other purpose of utility model and advantageous effect will be in conjunction with the accompanying drawings Description of preferred embodiments and it is more obvious understandable.

Description of the drawings

Fig. 1 is the structure diagram for the electromagnetic oven that the utility model embodiment provides；

Fig. 2 is the structure diagram of shielded layer in the electromagnetic oven that the utility model embodiment provides.

Reference sign：

1- panels；

2- coil panels；

3- shielded layers；

11- heating regions；

12- operating areas；

21- endocyclic areas；

22- outer regions；

23- intermediate regions.

Specific embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, belongs to The scope of the utility model protection.

Existing electromagnetic oven is typically to change the Distribution of Magnetic Field of coil panel by changing the distribution mode of coil panel, makes line It is relatively uniform to enclose the Distribution of Magnetic Field of disk, and then the uniformly heated effect of cookware.But this distribution side for changing coil panel The method of formula, it is generally the case that manufacturing process and structure are all more complicated, therefore manufacture difficulty and manufacture cost are all higher.

For in existing electromagnetic oven, the uniformly heated effect of cookware is reached using the distribution mode for changing coil panel Mode, the technical issues of increasing the manufacture difficulty of electromagnetic oven and manufacture cost, the utility model provides a kind of electromagnetic oven, mainly It is by the region overlay shielded layer with the intermediate region face of coil on panel, is distributed by shielded layer to weaken coil panel Compare the magnetic field of concentration, to realize being evenly heated for cookware.

Below in conjunction with the accompanying drawings, the technical solution of the utility model is described in detail.It is described below with reference to attached drawing Embodiment be exemplary, it is intended to for explaining the utility model, and it is not intended that limitation to the utility model.

Fig. 1 is the structure diagram for the electromagnetic oven that the utility model embodiment provides, and Fig. 2 carries for the utility model embodiment The structure diagram of shielded layer in the electromagnetic oven of confession.As depicted in figs. 1 and 2, provided in this embodiment kind of electromagnetic oven, including：Face Plate 1, bottom case (not shown) and coil panel 2, the lid of panel 1 are located on bottom case, and coil panel 2 is located at the cavity that panel 1 is surrounded with bottom case In, the coil in coil panel 2 includes the endocyclic area 21 close to 2 center of coil panel, the outer region 22 away from 2 center of coil panel And the intermediate region 23 between endocyclic area 21 and outer region 22, it is hanging down covered with shielded layer 3, shielded layer 3 on panel 1 The upward view field of Nogata is located in the intermediate region 23 of coil.

Wherein, coil panel 2 includes coil, coil plate rail and magnetic stripe, and coil is wound on by epoxy resin or muscle position hot pressure The upper surface of coil plate rail, magnetic stripe is by epoxy resin, silicone adhesive or long muscle hot pressure in the lower surface of coil plate rail.

In current electromagnetic oven, the top magnetic surface of magnetic stripe is designed as plane or step surface mostly, this causes the magnetic field of coil panel 2 It there is apparent strong and weak region along the radial direction of coil panel 2, wherein, coil in coil panel 2 is close to the inner ring at 2 center of coil panel The magnetic field intensity of the outer region 22 at region 21 and separate 2 center of coil panel is relatively weak, the magnetic field of the intermediate region 23 of coil Intensity is then relatively strong (i.e. the magnetic line of force compares concentration).

Electromagnetic oven is that the magnetic force line cutting cookware generated using coil panel 2 generates vortex current, the Joule heat of vortex current Effect makes cookware heat up, so as to fulfill heating；The magnetic line of force through cookware is more, and the vortex of generation is bigger, and then the heat generated Amount is bigger, also just has a talk about, the heat distribution of cookware bottom and the Distribution of Magnetic Field positive correlation of coil panel 2.Thus, above-mentioned this coil The magnetic field of disk 2 is along the different situation of the radial direction strength distribution of coil panel 2, when can cause the electromagnetic oven to work, the middle area with coil The temperature of the cookware bottom of 23 face of domain than with coil endocyclic area 21, the temperature of the cookware bottom of 22 face of outer region all It is high.

In the present embodiment, shielded layer 3 is set on panel 1, the view field of shielded layer 3 in vertical direction is located at coil Intermediate region 23 in, the magnetic field of the intermediate region 23 of coil can be weakened so as to shielded layer 3, make to act on cookware bottom The Distribution of Magnetic Field in portion makes the heat of cookware bottom be distributed than more uniform than more uniform, reaches the uniformly heated effect of cookware； In addition, existing realize the uniformly heated electromagnetic oven of cookware by changing the distribution mode of coil panel 2, usual manufacturing process and Structure is all more complicated, and it is all very high to cause to be made difficulty and cost, and the electromagnetic oven in the present embodiment, during fabrication, only need to be One layer of low permeability magnetic material is covered on panel 1 and forms shielded layer 3, thus manufacture difficulty can be effectively reduced and be manufactured into This.

Specifically, panel 1 may be employed devitrified glass, ceramics or other materials and be made for carrying cookware.

The shape of panel 1 can be circular, square or other shapes, as depicted in figs. 1 and 2, in the present embodiment be with The shape of panel 1 is not intended to limit the utility model to illustrate exemplified by square.

In addition, the size of panel 1 can also be specifically arranged as required to, the present embodiment is not specially limited this.

In the present embodiment, shielded layer 3 can specifically be covered in the upper surface of panel 1, can also be covered in the following table of panel 1 Face.

Wherein, shielded layer 3 is covered in the upper surface of panel 1, can be with while the magnetic field of shielded coil disk 2 is realized Heat-blocking action is played, reduces the temperature that cookware bottom is transferred to panel 1, and then reduces the Wen Sheng inside electromagnetic oven, extends electromagnetism The service life of stove；Shielded layer 3 is covered in the lower surface of panel 1, i.e. shielded layer 3 is hidden in the cavity that panel 1 is surrounded with bottom case In, such user just can't see shielded layer 3, so as to improve the aesthetics of electromagnetic oven to a certain extent.

For the above two set-up mode of shielded layer 3, in specific implementation, can arbitrarily select as needed, this reality Example is applied to be not specially limited this.As depicted in figs. 1 and 2, simply it is located at the upper surface of panel 1 in the present embodiment with shielded layer 3 Exemplified by illustrate, be not intended to limit the utility model.

The view field of shielded layer 3 in vertical direction is located in the intermediate region 23 of coil, with the middle area to coil The magnetic field in domain 23 is weakened, and the Distribution of Magnetic Field for making to act on cookware bottom is than more uniform.In order to preferably realize said effect, The shape of shielded layer 3 and the shape of the intermediate region 23 of coil are substantially uniform.

The intermediate region 23 of coil it is generally annular in shape, in the present embodiment, in specific implementation, shielded layer 3 can be with For annular, the region on panel 1 with 23 face of intermediate region of coil can be arranged concentrically one or more shieldings with coil panel 2 Layer 3；Shielded layer 3 or arc, the region on panel 1 with 23 face of intermediate region of coil can be in coil panel 2 The heart is the circumferentially disposed multiple fan-shaped shielded layers 3 in the center of circle.

Wherein, in above-mentioned set-up mode, shielded layer 3 is annular, can facilitate manufacture, and shield effectiveness can be more preferable；Screen Layer 3 is covered for arc, can be saved material, and then be reduced cost.In the present embodiment, as shown in Fig. 2, as a kind of preferred implementation Mode, shielded layer 3 are annular, to facilitate manufacture, while improve shield effectiveness.

In addition, in specific implementation, shielded layer 3 can be circular ring shape, can so facilitate the manufacture of shielded layer 3；Shielding Layer 3 can also be in integrally petal, can so improve shield effectiveness, make the Distribution of Magnetic Field for acting on cookware bottom more equal It is even.It specifically can arbitrarily select as needed, the present embodiment is not specially limited this.

In the present embodiment, the installation position of shielded layer 3 is set according to the Distribution of Magnetic Field of coil panel 2, is mainly set The stronger region of magnetic field intensity (i.e. the intermediate region 23 of coil) in coil panel 2, with the magnetic field of the intermediate region 23 to coil Weakened, the Distribution of Magnetic Field for making to act on cookware bottom is than more uniform.

The size of coil is different with Distribution of Magnetic Field, and the size of intermediate region 23 is also different, therefore, in the present embodiment, shielding The size of layer 3 can be adjusted according to the size of coil；The number of turns of shielded layer 3 can also determine according to the Distribution of Magnetic Field of coil, example As shielded layer 3 for annular when, the Distribution of Magnetic Field of coil compares concentration in two regions, shielded layer 3 or two, sets respectively It puts on panel 1 compared with two Distribution of Magnetic Field on the region of the region face of concentration.

Under normal conditions, the stronger region of the magnetic field intensity of coil (i.e. the intermediate region 23 of coil) is located at coil outer diameter Region between 1/4 and 2/3, therefore, in order to improve shield effectiveness, the Distribution of Magnetic Field for making to act on cookware bottom than more uniform, In the present embodiment, the internal diameter of shielded layer 3 can be more than or equal to the 1/4 of the outer diameter of coil, and 2/ of the outer diameter less than or equal to coil 3, specific size can be consistent with the specific size of the intermediate region 23 of coil.

In order to ensure the shield effectiveness of shielded layer 3, in the present embodiment, the thickness range of shielded layer 3 can be 0.5-5mm.

In specific implementation, the thickness of 3 each several part of shielded layer can be identical, to facilitate the manufacture of shielded layer 3；Shielded layer 3 The thickness of each several part can not also be same, such as：In the panel 1 with the relatively large region face of the magnetic field intensity of coil panel 2 Thicker shielded layer 3 is installed, to realize stronger shield effectiveness to the magnetic field in the region；In the magnetic field intensity with coil panel 2 1 position of panel of relatively small region face sets relatively thin shielded layer 3, to realize weaker shielding to the magnetic field in the region Effect so that the Distribution of Magnetic Field for acting on cookware bottom is more uniform, and then makes the heat distribution of cookware bottom more equal It is even, reach and be preferably evenly heated effect.

For the thickness realization method of above-mentioned shielded layer 3, can be selected as needed in specific implementation, the present embodiment pair This is not specially limited.

In the present embodiment, shielded layer 3 may be employed low permeability magnetic material and be made, low permeability magnetic material can with weakened field intensity, The magnetic field of coil panel 2 is shielded；Moreover, the caloric value of itself of low permeability magnetic material is also smaller.

In specific implementation, the material such as may be employed aluminium, copper or soft magnetism of shielded layer 3 is made.As a kind of preferred Embodiment, in the present embodiment, shielded layer 3, which is adopted, to be formed from aluminium, and aluminum material is easily molded, moreover, self-heating amount is minimum, is used Aluminium manufacture shielded layer 3 can facilitate the manufacture and fixation of shielded layer 3, while can reduce the caloric value of shielded layer 3.

In the present embodiment, shielded layer 3 can be covered in by modes such as spraying, silk-screen or stickups on panel 1.Such as：It can By by aluminium powder by spraying or silk-screen in a manner of be compounded in panel 1 surface formed shielded layer 3；Aluminium flake can also be passed through to stickup The surface that mode is fixed on panel 1 forms shielded layer 3.In specific implementation, can arbitrarily select as needed, the present embodiment pair This is not specially limited, as long as one layer of reliable and stable shielded layer 3 can be formed on the surface of panel 1.

In addition, as shown in Figure 1, in the present embodiment, panel 1 can include heating region 11 and operating area 12.

Wherein, the heating region 11 of panel 1 is located at the surface of coil panel 2, for placing cooker, 3 specific position of shielded layer In heating region 11.

Operating area 12 is located at the one side of heating region 11, and operation button, knob, display can be set on operating area 12 The structures such as screen and indicator light, user can be turned on and off electromagnetic oven by operation button and knob and set heating power With heating mode etc.；The current working condition of electromagnetic oven is checked by display screen and indicator light.

It should be noted that panel 1 can include heating region 11 and operating area 12 simultaneously, heating can also be only included Region 11.

Wherein, the structure including heating region 11 and operating area 12, the i.e. upper surface of electromagnetic oven use one to panel 1 simultaneously A whole structure is realized, thus visually better appearance；Panel 1 only includes the structure of heating region 11, is realizing operating space It during domain, can be realized by plastic shell, thus the cost of electromagnetic oven can be reduced.

For the structure of panel 1, in specific implementation, can be arranged as required to, the present embodiment does not do special selection.Figure It is simply illustrated in 1 by taking panel 1 includes heating region 11 and operating area 12 as an example, is not intended to limit this reality With new.

In the present embodiment, bottom case can specifically include lower cover and upper cover, wherein, lower cover is with bottom plate and is disposed around bottom plate The cavity body structure of the side wall of surrounding；Upper cover is frame-type structure；Upper cover lid is located in the open top of lower cover.

Panel 1 is fixed on the frame of upper cover formation, and specifically during connection, panel 1 can pass through bonding way and/or clamping Mode is fixed on lid.

In addition, in specific implementation, the upper surface of panel 1 can be with the upper surface flush of the upper cover of bottom case；It can also be high In the upper surface of the upper cover of bottom case, can specifically select as needed, the present embodiment is not specially limited.

It can be fixed together between the upper cover and lower cover of bottom case by way of being spirally connected and being buckled, i.e., in upper cover and lower lid Screw hole can be opened up, upper cover is fixed on lower lid by screw, to ensure the connectivity robustness between upper cover and lower cover；Together When, the buckle structure of mutual cooperation can be set in upper cover and lower lid, upper cover and lower cover are carried out by buckle structure simply solid It is fixed, it is cost-effective simultaneously, convenient for the fixation that is spirally connected between upper cover and lower cover.

In addition, aeration structure can be set on lower lid, in order to the heat dissipation inside electromagnetic oven, electromagnetic oven internal temperature rise is avoided Service life that is excessively high and influencing electromagnetic oven.

In addition, the bottom of lower cover can set support feet, electromagnetic oven is used to support, while bottom plate is made to be contacted with air, is carried The heat dissipation effect of high electromagnetic oven.

It is similar with the structure of existing electromagnetic oven in the present embodiment, it is provided with coil in the cavity that panel 1 and bottom case surround Disk 2, circuit board, wind turbine and other radiating elements etc..Wherein, there is microcontroller, insulated gate bipolar transistor on circuit board (Insulated Gate Bipolar Transistor, IGBT), IGBT drive circuit, resonance circuit etc..

Coil panel 2, circuit board, the concrete structure of wind turbine and other radiating elements may refer to corresponding in existing electromagnetic oven Structure, such as：Coil panel 2 includes coil, coil plate rail and magnetic stripe；On circuit board have microcontroller, current rectifying and wave filtering circuit, IGBT, IGBT drive circuit, resonance circuit, switching power circuit and surge protection circuit etc.；Wind turbine can be centrifugal blower or Axial flow blower etc.；Other radiator structures include water tank and cooling fin etc..For the concrete structure of each device in above-mentioned electromagnetic oven, sheet Embodiment is not specially limited.

It should be noted that in the present embodiment, Fig. 1 and Fig. 2 illustrate only the part-structure in electromagnetic oven, for electromagnetism The detailed construction of other devices in stove may refer to corresponding structure in existing electromagnetic oven.

Electromagnetic oven provided in this embodiment, set shielded layer on the panel of electromagnetic oven, and shielded layer is in vertical direction View field is located in the intermediate region of coil, so as to which shielded layer can weaken the magnetic field of the intermediate region of coil, makes The Distribution of Magnetic Field of cookware bottom is acted on than more uniform, and then the heat of cookware bottom is made to be distributed than more uniform, it is equal to reach cookware The effect of even heating；Moreover, during fabrication, one layer of low permeability magnetic material need to be only covered on panel and forms shielded layer, thus Manufacture difficulty and manufacture cost can be reduced.

In the description of the utility model, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", The orientation or position relationship of the instructions such as " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on orientation shown in the drawings or Position relationship is for only for ease of description the utility model and simplifies description rather than instruction or imply signified device or member Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.

In addition, in the utility model, unless otherwise clearly defined and limited, term " connection ", " connected ", " Gu Calmly ", " installation " etc. should be interpreted broadly, such as can be mechanical connection or electrical connection；Can be directly connected to, It can be indirectly connected by intermediary, can be the interaction relationship of connection inside two elements or two elements, remove It is non-it is another have specific restriction, for the ordinary skill in the art, can understand that above-mentioned term exists as the case may be Concrete meaning in the utility model.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from this practicality newly The scope of each embodiment technical solution of type.

Claims (10)

1. a kind of electromagnetic oven, including：Panel (1), bottom case and coil panel (2), panel (1) lid are located on the bottom case, institute It states coil panel (2) to be located in the cavity that the panel (1) is surrounded with the bottom case, the coil in the coil panel (2) includes leaning on The endocyclic area (21) at nearly coil panel (2) center, the outer region (22) away from the coil panel (2) center and positioned at institute State the intermediate region (23) between endocyclic area (21) and outer region (22), which is characterized in that on the panel (1) covered with Shielded layer (3), the view field of the shielded layer (3) in vertical direction are located in the intermediate region (23) of the coil.

2. electromagnetic oven according to claim 1, which is characterized in that the shielded layer (3) is annular, the shielded layer (3) It is arranged concentrically with the coil panel (2).

3. electromagnetic oven according to claim 2, which is characterized in that the internal diameter of the shielded layer (3) is more than or equal to the line The 1/4 of the outer diameter of circle, and 2/3 of the outer diameter less than or equal to the coil.

4. electromagnetic oven according to claim 1, which is characterized in that the thickness range of the shielded layer (3) is 0.5-5mm.

5. electromagnetic oven according to claim 1, which is characterized in that the shielded layer (3) is specifically covered in the panel (1) Upper surface.

6. electromagnetic oven according to claim 1, which is characterized in that the shielded layer (3) is specifically covered in the panel (1) Lower surface.

7. electromagnetic oven according to claim 1, which is characterized in that the shielded layer (3) is made of low permeability magnetic material.

8. electromagnetic oven according to claim 7, which is characterized in that the shielded layer (3) is specifically adopted and is formed from aluminium.

9. electromagnetic oven according to claim 1, which is characterized in that the shielded layer (3) passes through spraying, silk-screen or stickup Mode is covered on the panel (1).

10. according to claim 1-9 any one of them electromagnetic ovens, which is characterized in that the panel (1) includes heating region (11) it is located at operating area (12), the shielded layer (3) in the heating region (11).