CN207560378U - Electromagnetic oven and coil panel thereof - Google Patents

Abstract

The utility model provides an electromagnetism stove and coil panel thereof relates to the domestic appliance technique. The utility model arranges a first coil (111) with relatively small inductance and a second coil (112) with relatively large inductance, so that the induction cooker can provide relatively small heating power through the first coil (111) and also can provide larger heating power through the second coil (112), moreover, the first coil (111) and the second coil (112) are respectively arranged on the first coil bracket (121) and the second coil bracket (122), so that the first coil (111) and the second coil (112) can respectively and independently work, in the working process of the induction cooker, the inductance of the coil in the induction cooker can be adjusted according to the cooking requirement of a user, therefore, the phenomenon that the electric current of the induction cooker is too large or even the electric element is broken down due to overheating is avoided, the safety of the induction cooker is improved, and more cooking requirements of users are met.

Description

Electromagnetic oven and its coil panel

Technical field

The utility model is related to household electrical appliance technology more particularly to a kind of electromagnetic ovens and its coil panel.

Background technology

Electromagnetic oven has many advantages, such as fast heating, the flames of anger, safe and convenient, is that frequency of use is very high in people's daily life Household electrical appliance.

Electromagnetic oven generally comprises：Bottom case；Coil panel, coil panel have unicoil and wire coil bracket, and unicoil winding is online In the winding slot of disc carrier, wire coil bracket is arranged in bottom case, and unicoil is electrically connected to a power source；Heating panel is arranged on bottom case Top, for carrying cookware.In the prior art, in order to meet quick demand for heat of the user to large area cookware, usually will The inductance of coil panel is set larger, to improve the power of electromagnetic oven.

However, the inductance due to coil panel during the work time will not change, when user needs electromagnetic oven in low work( When working under rate state, such as when the small milk pot temperature milk of user's usable floor area, coil panel still has larger inductance at this time, Therefore, the phenomenon that excessive electric current or even overheat breakdown electrical equipment, easily occurs for electromagnetic oven, so that the safety of electromagnetic oven It is poor.

Utility model content

For drawbacks described above of the prior art, the utility model provides a kind of electromagnetic oven and its coil panel, improves electromagnetism The safety of stove, and meet user and more cook demand.

The first aspect of the utility model is to provide a kind of electromagnetic oven, including：Bottom case；Heating panel, the heating surface Plate is arranged on the top of the bottom case；First coil, the first coil are arranged on first wire coil bracket；Second line Circle, second coil are arranged on second wire coil bracket；Wherein, first wire coil bracket and the second wire coil bracket are set It puts in the bottom case；The inductance value of the first coil is less than the inductance value of second coil.

By setting the relatively small first coil of inductance value and relatively large second coil of inductance value so that electromagnetism Stove can provide relatively small heating power by first coil, additionally it is possible to larger heating work(is provided by the second coil Rate, also, by the way that first coil, the second coil are separately positioned on the first wire coil bracket, on the second wire coil bracket, ensure first Coil and the second coil can independently work, in this way, in the electromagnetic oven course of work, it can be according to the culinary art demand of user Realize the adjustment to the inductance value of electromagnetic oven coil, electric current is excessive or even overheat breakdown is electrical first so as to which electromagnetic oven be avoided to occur The phenomenon that part, the safety of electromagnetic oven is improved, and meet user and more cook demand.

Optionally, the upper surface of the first coil is higher than the upper surface of second coil.

By the way that the upper surface of first coil to be set above to the upper surface of the second coil, the smaller first coil of inductance value Cookware apart from electromagnetic oven carrying is closer to the magnetic line of force that first coil generates can more effectively cut to cookware, so as to contribute to Improve the working efficiency of coil panel.

Optionally, the ratio of second coil and the inductance value of first coil is more than or equal to 10 and less than or equal to 100.

By by the ratio of the second coil and the inductance value of first coil, being disposed greater than being equal to 10 and less than or equal to 100 Section in, while disclosure satisfy that user's a variety of daily culinary art demands, additionally it is possible to so that coil panel have smaller volume, Relatively low cost.

Optionally, the inductance value of the first coil is more than or equal to 1 microhenry and less than or equal to 50 microhenry；It is and/or described The inductance value of second coil is more than or equal to 50 microhenrys and less than or equal to 150 microhenry.

First coil, the second coil disclosure satisfy that a variety of daily culinary arts of user by using inductance value as described above While demand, additionally it is possible to so that coil panel has smaller volume, relatively low cost.

Optionally, the number of turn of the first coil is less than the number of turn of second coil.

Optionally, first wire coil bracket is connected and fixed with second wire coil bracket.

By the way that the first wire coil bracket and the second wire coil bracket are clamped, the efficiency of assembling of electromagnetic oven is helped to improve, also just In maintenance and replacement to first coil, the second coil.

Optionally, one in first wire coil bracket and the second wire coil bracket is provided at least two hooks, another It is a, it is provided with the card hole engaged with the hook.

Optionally, the magnetic stripe includes the first magnetic stripe, and first magnetic stripe is arranged below second wire coil bracket；Institute The both ends for stating the first magnetic stripe are respectively arranged with inner ring magnetic stripe, outer ring magnetic stripe, and the inner ring magnetic stripe, outer ring magnetic stripe pass through described first The through-hole of wire coil bracket and the second wire coil bracket.

By setting inner ring magnetic stripe, outer ring magnetic stripe, and under making inner ring magnetic stripe, outer ring magnetic stripe below the second wire coil bracket Side penetrates through-hole and is pierced by from the top between the first drum, outside the electromagnetic field for preferably changing first coil and the second coil Shape allows more electromagnetic radiation to focus on first coil and the second coil towards the side of cookware, improves the efficiency of heating surface of cookware.

Optionally, the magnetic stripe further includes：There are outer ring magnetic stripe, the outer ring in second magnetic stripe, the outer end of second magnetic stripe Magnetic stripe passes through the through-hole of first wire coil bracket and the second wire coil bracket；Wherein, first magnetic stripe and the second magnetic stripe phase Between set.

By the way that by the setting alternate with Article 2 of the first magnetic stripe, more magnetic can be set in the lower section of the second wire coil bracket Item so as to further preferably change first coil and the electromagnetic field shape of the second coil, allows more electromagnetic radiation to concentrate To first coil and the second coil towards the side of cookware, the efficiency of heating surface of cookware is improved.

Optionally, the output terminal of the first coil and input terminal are respectively arranged with wire connection terminal, the first coil energy Enough it is electrically connected to a power source by the wire connection terminal.

Optionally, the output terminal of second coil and input terminal are respectively arranged with wire connection terminal, the second coil energy Enough it is electrically connected to a power source by the wire connection terminal.

Optionally, input terminal of the output terminal of the first coil also with second coil is electrically connected.

By the way that first coil and the second coil are connected in series with, when high power is needed to heat, electric current is defeated from first coil Entering after end respectively enters first coil, the second coil and flowed out from the second coil output, wire circle is more, inductance value bigger, Electromagnetic oven power higher disclosure satisfy that user's significant power demand.

The other side of the utility model is to provide a kind of coil panel of electromagnetic oven, including：First coil, described first Coil is arranged on first wire coil bracket；Second coil, second coil are arranged on second wire coil bracket；Its In, first wire coil bracket and the second wire coil bracket are arranged in the bottom case；The inductance value of the first coil is less than institute State the inductance value of the second coil.

By setting the relatively small first coil of inductance value and relatively large second coil of inductance value so that electromagnetism Stove can provide relatively small heating power by first coil, additionally it is possible to larger heating work(is provided by the second coil Rate, also, by the way that first coil, the second coil are separately positioned on the first wire coil bracket, on the second wire coil bracket, ensure first Coil and the second coil can independently work, in this way, in the electromagnetic oven course of work, it can be according to the culinary art demand of user Realize the adjustment to the inductance value of electromagnetic oven coil, electric current is excessive or even overheat breakdown is electrical first so as to which electromagnetic oven be avoided to occur The phenomenon that part, the safety of electromagnetic oven is improved, and meet user and more cook demand.

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 of electromagnetic oven provided in this embodiment part；

Fig. 2 is the first wire coil bracket, the second wire coil bracket, the first magnetic stripe and the second magnetic in electromagnetic oven provided in this embodiment The assembling schematic diagram of item；

Fig. 3 is sectional views of the Fig. 2 at A-A；

Fig. 4 is the close-up schematic view of Fig. 3；

Fig. 5 is first coil, the second coil, the first wire coil bracket and the second drum branch in electromagnetic oven provided in this embodiment The structure diagram of frame；

Fig. 6 is that first coil and the second coil are electrically connected schematic diagram in electromagnetic oven provided in this embodiment.

Reference sign：

111- first coils；The second coils of 112-；111a, 112a- input terminal；111b, 112b- output terminal；121- first Wire coil bracket；The second wire coil brackets of 122-；120a- hooks；120b- card holes；The first magnetic stripes of 131-；The second magnetic stripes of 132-.

Specific embodiment

Fig. 1 is the structure diagram of electromagnetic oven provided in this embodiment part.

Fig. 1 is please referred to, the present embodiment provides a kind of electromagnetic oven, including：Bottom case；Heating panel, heating panel are arranged on bottom The top of shell；First coil 111, first coil 111 are arranged on the first wire coil bracket 121；Second coil 112, the second coil 112 are arranged on the second wire coil bracket 122；Wherein, the first wire coil bracket 121 and the second wire coil bracket 122 are arranged in bottom case； The inductance value of first coil 111 is less than the inductance value of the second coil 112.

Specifically, bottom case can be box body structure with an open mouth, and heating panel lid is located at the upper opening of bottom case, with Bottom case and heating panel is enable to form closed accommodating space, accommodating space can be rectangular, round or oval etc., this Embodiment is not specifically limited this；The accommodating space can accommodate coil panel, IGBT, resonant capacitance and controller etc..

Heating panel is additionally operable to carrying cookware, so that the magnetic field that is generated after being powered using coil panel of electromagnetic oven is come to putting Put the cookware heating on the heating panel of electromagnetic oven.Electromagnetic oven also is able to fill to the coil panel period using the switching characteristic of IGBT Resonance, coil panel and the resonant capacitance higher-order of oscillation can be kept, action of alternating magnetic field is generated in cookware, realizes the heating to cookware.

Wherein, coil panel includes：First coil 111, the first wire coil bracket 121, the second coil 112 and the second drum branch Frame 122.By the way that first coil 111, the second coil 112 are set respectively in the first wire coil bracket 121, the second wire coil bracket 122, It is damaged can effectively to avoid occurring between 111 and second coil 112 of first coil friction, so as to avoid first coil 111, Encounter the short circuit formed together in the place of second coil, 112 paint film rupture.

In a kind of optional embodiment of the present embodiment, on the first wire coil bracket 121 and/or the second wire coil bracket 122 Winding slot, entrance hole and outlet hole can be provided with, entrance hole, outlet hole connect respectively with winding slot.With the first wire coil bracket 121 are provided with for winding slot, entrance hole and outlet hole：First coil 111 is fastened on the winding slot of the first wire coil bracket 121 In；Be during specific implementation the first coil 111 by harness is twisted into since the entrance hole of the first wire coil bracket 121, along first The coiling clockwise or counterclockwise of wire coil bracket 121 is finally pierced by from the outlet hole of the first wire coil bracket 121, so as to realize first The assembling of 111 and first wire coil bracket 121 of coil.

In another optional embodiment of the present embodiment, the first wire coil bracket 121 and/or the second wire coil bracket 122 Upper surface for bonding plane, upper surface is specifically as follows plane.By the upper surface of the first wire coil bracket 121 for for plane：The One coil 111 can be adhesively fixed on the upper surface of the first wire coil bracket 121.Certainly, in the present embodiment, the first wire coil bracket 121 and second the upper surface of wire coil bracket 122 be not limited to plane, the present embodiment is only illustrated herein, for example, The upper surface of one wire coil bracket 121 and the second wire coil bracket 122 can also be arcwall face.

It should be noted that：Electromagnetic oven coil is not limited in 111 and second coil 112 both lines of first coil Circle, the present embodiment progress illustrate the structure of electromagnetic oven by taking first coil 111, the second coil 112 as an example.

Such as：Electromagnetic oven can include three coils, be successively from the bottom up：Inner coil, middle level coil and upper layer line Circle, wherein, the inductance value of inner coil can be more than the inductance value of middle level coil, and the inductance value of middle level coil can be more than upper strata The inductance value of coil.At this point, the heating power of upper coil is less than the heating power of middle level coil, the heating power of middle level coil Less than the heating power of inner coil.It is heated in this way, upper coil is suitable for milk pot to needing low-power heating etc., lower floor Coil is suitable for frying pan of high-power heating etc. is needed to heat, middle level coil be suitable for need power between it is high-power with it is small Cookware between power is heated.Wherein, the present embodiment does not limit high-power, low power specific size, as long as Be it is high-power be more than small-power.

Wherein, inner coil can be used as first coil 111, at this point, middle level coil and upper coil can be used as the Two coil 112；Middle level coil can also be used as first coil 111, at this point, upper coil is as the second coil 112.Certainly, it is electric The quantity of coil in magnetic stove is not limited to this, and the present embodiment is illustrated at this time.

First coil 111, the number of the second coil 112 can be one, or it is more than two, the present embodiment for First coil 111, the number of the second coil 112 are not specifically limited, and those skilled in the art can carry out according to actual needs Setting.

By taking first coil 111 as an example：First coil 111 can there are two, two first coils 111 can be arranged on same In a first wire coil bracket 121；At this point, the first coil 111 in the first wire coil bracket 121 works at the same time.Alternatively, First Line Circle 111 can there are two, the first wire coil bracket 121 also there are two, two first coils 111 are separately positioned on two the first drums In stent 121, at this point, first coil 111 can independently work, it can also work at the same time.The setting side of second coil 112 Formula can be similar with the set-up mode of first coil 111, and details are not described herein again.

In the present embodiment, in the case where first coil 111 is identical with 112 other parameters of the second coil, first can be made The number of turn of coil 111 is less than the number of turn of the second coil 112, so as to which the inductance value of first coil 111 be made to be less than the second coil 112. Wherein, when output power is less than 600W, routinely line footpath 0.2mm, is satisfied with 1≤n≤20, single-layer winding circle around strand count n Number N is satisfied with 1≤N≤10；When output power is less than 2200W, it is satisfied with 1≤n≤100, the single-layer winding number of turn around strand count n N is satisfied with 1≤N≤50.

Alternatively, in the case where the number of turn of first coil 111 is identical with the number of turn of the second coil 112, the second coil 112 Length is less than the length of first coil 111, at this point, the arrangement of the opposite first coil 111 of the arrangement of the second coil 112 is closer, So as to reduce the magnetic resistance of the second coil 112, the inductance value of first coil 111 is made to be less than the second coil 112.

Or in the case where the number of turn of first coil 111 is identical with the number of turn of the second coil 112 so that the second line Circle 112 has the magnetic conductivity of bigger relative to first coil 111, for example, first coil 111 is air core coil, the second coil 112 are inserted into magnetic core in air core coil, so as to which the inductance value of first coil 111 be made to be less than the second coil 112.Certainly so that the The realization method that the inductance value of one coil 111 is less than the inductance value of the second coil 112 is not limited to this, and the present embodiment is only herein It is illustrated.

Due to certain in supply voltage, and electromagnetic oven other component specifications it is certain under conditions of, the inductance value of coil It is closely related with the power of electromagnetic oven；When the inductance value of coil is bigger, the power of electromagnetic oven is also bigger；When the inductance value of coil is got over Small, the power of electromagnetic oven is also smaller.Therefore, in the present embodiment, the smaller first coil 111 of inductance value disclosure satisfy that the small work(of user The culinary art demand of rate, such as disclosure satisfy that user uses the demand of milk pot temperature milk；The second larger coil 112 of inductance value can expire The sufficient powerful culinary art demand of user, such as disclosure satisfy that user uses the demand of frying pan quick-fried.Wherein, coil is to electromagnetism The general designation of 111 and second coil 112 of first coil in stove.

When user heats cookware, corresponding coil First Line can be manually selected according to the actual needs of oneself Either the second coil 112 works or automatically selects corresponding first coil according to the size of cookware by electromagnetic oven circle 111 111 or 112 coil of the second coil work.

The coil panel of electromagnetic oven provided in this embodiment, the relatively small first coil 111 of inductance value and inductance value phase To the second larger coil 112 so that electromagnetic oven can provide relatively small heating power by first coil 111, moreover it is possible to Larger heating power enough is provided by the second coil 112, also, by the way that first coil 111, the second coil 112 are set respectively It puts on the first wire coil bracket 121, the second wire coil bracket 122, ensures that 111 and second coil 112 of first coil can be only respectively Vertical work in this way, in the electromagnetic oven course of work, can realize the inductance to electromagnetic oven coil according to the culinary art demand of user The adjustment of amount so as to which electromagnetic oven be avoided the phenomenon that excessive electric current or even overheat breakdown electrical equipment occur, improves electromagnetic oven Safety, and meet user and more cook demand.

Further, the upper surface of first coil 111 is higher than the upper surface of the second coil 112.

Specifically, first coil 111 can be arranged on the top of the second coil 112, in this way, the smaller First Line of inductance value The magnetic line of force that cookware of the circle 111 apart from electromagnetic oven carrying is generated closer to, first coil 111 can more effectively cut to cookware, from And help to improve the working efficiency of coil panel.

Optionally, the ratio of the second coil 112 and the inductance value of first coil 111 is more than or equal to 10 and less than or equal to 100, In this way, while disclosure satisfy that user's daily culinary art demand, additionally it is possible to so that coil panel have smaller volume, it is relatively low into This, helps to ensure that the portability of electromagnetic oven.

Certainly, the ratio of the second coil 112 and the inductance value of first coil 111 is not limited to this, such as the second coil 112 Ratio with the inductance value of first coil 111 can also be 3,5 etc..Second coil 112 and the inductance value of first coil 111 Ratio can be specifically configured according to the demand to power in the daily culinary art of user.

Optionally, the inductance value of first coil 111 is more than or equal to 1 microhenry and less than or equal to 50 microhenry, small to meet user Fiery temperature milk, small fire are stewed etc. slowly to cook demand, avoids the occurrence of overflowing pot phenomenon.The inductance value of second coil 112 is more than or equal to 50 microhenrys And less than or equal to 150 microhenrys, to meet the culinary art demand of the needs big fire such as user's quick-fried.

The inductance value of the inductance value of first coil 111 and the second coil 112 is also not limited to this, and the present embodiment is herein only It is to be illustrated, those skilled in the art can be according to the demand to power in the daily culinary art of user, to first coil 111 Inductance value and the inductance value of the second coil 112 be configured.

Fig. 2 is the first wire coil bracket, the second wire coil bracket, the first magnetic stripe and the second magnetic in electromagnetic oven provided in this embodiment The assembling schematic diagram of item；Fig. 3 is sectional views of the Fig. 2 at A-A；Fig. 4 is the close-up schematic view of Fig. 3.

Fig. 2-4 are please referred to, and with continued reference to Fig. 1, optionally, electromagnetic oven further includes the first magnetic stripe 131, the first magnetic stripe 131 It is arranged on 122 lower section of the second wire coil bracket；The both ends of first magnetic stripe 131 are respectively arranged with inner ring magnetic stripe, outer ring magnetic stripe, inner ring magnetic Item, outer ring magnetic stripe pass through the through-hole of the first wire coil bracket 121 and the second wire coil bracket 122.Wherein, outer ring magnetic stripe deviates from second The center of circle setting of wire coil bracket 122, inner ring magnetic stripe are set towards the center of circle of the second wire coil bracket 122.

Through-hole is both provided on first wire coil bracket 121 and the second wire coil bracket 122, which is used for for outer ring magnetic stripe Pass through, inner ring magnetic stripe, outer ring magnetic stripe penetrate through-hole from the lower section of 122 lower section of the second wire coil bracket and be pierced by the first wire coil bracket 121 top so as to preferably change the electromagnetic field shape of 111 and second coil 112 of first coil, allows more electromagnetism spoke It penetrates and focuses on 111 and second coil 112 of first coil towards the side of cookware, improve the efficiency of heating surface of cookware.

Optionally, electromagnetic oven further includes the second magnetic stripe 132, and there is outer ring magnetic stripe in the outer end of the second magnetic stripe, and outer ring magnetic stripe passes through The through-hole of first wire coil bracket 121 and the second wire coil bracket 122；Wherein, the first magnetic stripe 131 and the second magnetic stripe 132 is alternate sets It puts.

Wherein, the length of the first magnetic stripe 131 is more than the length of the second magnetic stripe 132, so that the arrangement of magnetic stripe 130 can more step up It is close.Second magnetic stripe 132 towards the center of circle of the second wire coil bracket 122 two vertex can respectively with the first adjacent magnetic stripe 131 Offset, with further such that each magnetic stripe 130 arrangement can it is even closer, improve magnetic conduction effect.

By that by the first magnetic stripe 131 and the 132 alternate setting of the second magnetic stripe, can be set in the lower section of the second wire coil bracket 122 More magnetic stripes 130 are put, so as to further preferably change the electromagnetic field shape of 111 and second coil 112 of first coil, are allowed More electromagnetic radiation focuses on 111 and second coil 112 of first coil towards the side of cookware, improves the heating effect of cookware Rate.

Certainly, in the present embodiment, the first magnetic stripe 131 can be arranged on 122 lower section of the second wire coil bracket, the second magnetic stripe 132 The lower section of the first wire coil bracket 121 is arranged on, at this point, the length of inner ring magnetic stripe and outer ring magnetic stripe is adapted to adjust.

Further, the first wire coil bracket 121 is connected and fixed with the second wire coil bracket 122, so as to by the first drum Stent 121 is assembled as a whole with the second wire coil bracket 122, helps to improve the efficiency of assembling of electromagnetic oven；Also, pass through First wire coil bracket 121 and the second wire coil bracket 122 are clamped, when the coil in a wherein wire coil bracket breaks down, The dismounting of the first wire coil bracket 121 and the second wire coil bracket 122 is also convenient for, so as to be overhauled to the coil to break down, this When, if necessary to more emat coil, it is only necessary to replace the coil to break down.

In a kind of optional embodiment of the present embodiment, in the first wire coil bracket 121 and the second wire coil bracket 122 One is provided at least two hook 120a, another is then provided with the card hole 120b engaged with hook 120a, by by hook 120a is stretched into card hole 120b, and the first wire coil bracket 121 of realization is connected and fixed with the second wire coil bracket 122.

Be provided with using on the first wire coil bracket 121 hook 120a, be provided on the second wire coil bracket 122 card hole 120b as Example：Stretch into card hole 120b, the hook formations of hook 120a ends passes through card hole 120b, and under the second wire coil bracket 122 Surface offsets, and is mutually disengaged so as to limit the first wire coil bracket 121 with the second wire coil bracket 122.

Wherein, hook 120a can be two or more, and can circumferentially be uniformly distributed；When hook 120a's When quantity is 3 or 3 or more, wherein 3 hook 120a are located at vertex of a triangle respectively.At this point, card hole 120b Set-up mode is corresponding with the set-up mode of hook 120a.

This implementation it is another in optional mode, hook 120a and card hole 120b is provided on the first wire coil bracket 121, It is also equipped with hook 120a and card hole 120b on second wire coil bracket 122, the hook 120a on the first wire coil bracket 121 can be with The cooperation of card hole 120b on second wire coil bracket 122, the card hole 120b on the first wire coil bracket 121 can be with the second drum branch Hook 120a cooperations on frame 122, so that the clamping of the first wire coil bracket 121 and the second wire coil bracket 122 is relatively reliable.

Wherein, by taking the first wire coil bracket 121 as an example, the quantity of hook 120a can be at least two, the number of card hole 120b Amount can be at least one, and hook 120a can be set with card hole 120b along identical circumference, such as often set two cards It hooks 120a and one card hole 120b is set later；Alternatively, hook 120a is separately positioned on from card hole 120b on different circumference.The Card hole 120b on the set-up mode and the first wire coil bracket 121 of hook 120a on two wire coil brackets 122 and card hole 120b and Hook 120a is corresponding.

Certainly, it being not limited to this about hook 120a and the set-up mode of card hole 120b, the present embodiment is merely illustrative of, Those skilled in the art can be configured according to actual needs, as long as it can be realized the first wire coil bracket 121 and second The function that wire coil bracket 122 connects and fixes.

Clamping form about the first wire coil bracket 121 and the second wire coil bracket 122 is also not necessarily limited to this, people in the art Member can be configured according to actual needs, block the first wire coil bracket 121 and the second wire coil bracket 122 as long as can realize Connect fixed function.For example, annular or fan-shaped snap ring, the second line are also provided on the first wire coil bracket 121 The corresponding card slot in left and right is set on disc carrier 122, the first wire coil bracket 121 and the second drum are realized by the cooperation of snap ring and card slot Stent 122 connects and fixes.

Fig. 5 is first coil, the second coil, the first wire coil bracket and the second drum branch in electromagnetic oven provided in this embodiment The structure diagram of frame；Fig. 6 is that first coil and the second coil are electrically connected schematic diagram in electromagnetic oven provided in this embodiment.

Fig. 5-6 are please referred to, and with continued reference to Fig. 1-4, further, the output terminal 111b and input terminal of first coil 111 111a is respectively arranged with wire connection terminal, and first coil 111 can be electrically connected to a power source by wire connection terminal；Second coil 112 Output terminal 112b and input terminal 112a is respectively arranged with wire connection terminal, and the second coil 112 can pass through wire connection terminal and power supply electricity Connection, so that first coil 111, the second coil 112 can independently work.The output terminal 111b of first coil 111 Input terminal 112a also with the second coil 112 is electrically connected, the work so that first coil 111, the second coil 112 can connect Make, there is the heating power of bigger.

When being worked using the electromagnetic oven for being provided with coil panel provided in this embodiment, when low-power is needed to heat, Electric current flows after can entering first coil 111 from the input terminal 111a of first coil 111 from the output terminal 111b of first coil 111 Go out, at this point, 111 inductance value of first coil is less than normal, the power of electromagnetic oven is low, is not in that electric current is excessive or even overheat breakdown is electrical The phenomenon that element.When high power is needed to heat, the input terminal of the output terminal 111b of first coil 111 and the second coil 112 112a is riveted together, electric current from 111 input terminal 111a of first coil respectively enter first coil 111, the second coil 112 after from Second coil, 112 output terminal 112b flows out, and wire circle is more, and inductance value is bigger than normal, and it is high-power to meet user for electromagnetic oven power raising Demand.

In the present embodiment, electromagnetic oven can automatically switch the line of work according to the size for the cookware being placed on electromagnetic oven Circle.Such as：Weight sensor can be provided in electromagnetic oven, the controller of electromagnetic oven can be according to the detection knot of weight sensor Fruit judges the size of cookware, so as to control corresponding coil working；Wherein, for larger cookware, controller control inductance value Larger coil working；For smaller cookware, the controller control smaller coil working of inductance value.

Using the center of the heating region of electromagnetic oven as the center of circle, using the first pre-determined distance as that can be set on the first circumference of radius At least one first weight sensor is equipped with, provided circumferentially about has at least one second using the second pre-determined distance as the second of radius Weight sensor, the second pre-determined distance are more than the first pre-determined distance；When cookware is placed on electromagnetic oven by user, controller obtains The first gravimetric value detected of first weight sensor, and the first gravimetric value and the first weight threshold are compared, if the One gravimetric value is less than the first weight threshold, it is determined that cookware is pannikin；If the first gravimetric value is more than the first weight threshold, control Device obtains the second gravimetric value that the second weight sensor detects, the second gravimetric value and the second weight threshold are compared, if Second gravimetric value is more than the second weight threshold, it is determined that cookware is cauldron.

Certainly, infrared sensor, ultrasonic sensor etc. on electromagnetic oven can also be set, pass through infrared sensor, ultrasound Wave sensor detects its position to be existed either with or without cookware, so as to determine therefrom that the size of cookware by controller.The present embodiment Judgement for the size of cookware is simultaneously not specifically limited, and the judgement of the size about cookware is also not necessarily limited to this, art technology Personnel can be configured according to actual needs.

Electromagnetic oven can also receive setting of the user to heating power, that is, user can be manually selected needed for oneself Power.Such as：Control switch is additionally provided on electromagnetic oven, control switch is connected between each coil and power supply, control switch energy The break-make between each coil and power supply is enough controlled, enables a user to manually select and oneself corresponding line of actual needs Enclose work.

Wherein, control switch can be identical with the quantity of coil, at this point, control switch is specifically as follows common button, Each control switch controls the break-make between corresponding coil and power supply.Control switch may be a, at this point, control switch can Think knob, the break-make between corresponding coil and power supply is controlled according to the angle that knob rotates；For example, when the angle of knob rotation Spend it is larger, control compared with big inductance quantity coil energization.

Please continue to refer to Fig. 1-6, the present embodiment also provides a kind of coil panel of electromagnetic oven, including：First coil 111, the One coil 111 is arranged on the first wire coil bracket 121；Second coil 112, the second coil 112 are arranged on the second wire coil bracket 122 On；Wherein, the first wire coil bracket 121 and the second wire coil bracket 122 are arranged in bottom case；The inductance value of first coil 111 is less than The inductance value of second coil 112.

Wherein, the structure of first coil 111, the second coil 112, the first wire coil bracket 121 and the second wire coil bracket 122, Function can be identical with previous embodiment, and details are not described herein again.

Finally it should be noted that：The above various embodiments 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 replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims (12)

1. a kind of electromagnetic oven, including：Bottom case；Heating panel, the heating panel are arranged on the top of the bottom case；Its feature exists In further including：First coil (111), the first coil (111) are arranged on the first wire coil bracket (121)；Second coil (112), second coil (112) is arranged on the second wire coil bracket (122)；

Wherein, first wire coil bracket (121) and the second wire coil bracket (122) are arranged in the bottom case；The First Line The inductance value for enclosing (111) is less than the inductance value of second coil (112).

2. electromagnetic oven according to claim 1, which is characterized in that the upper surface of the first coil (111) is higher than described The upper surface of second coil (112).

3. electromagnetic oven according to claim 1, which is characterized in that second coil (112) and first coil (111) The ratio of inductance value is more than or equal to 10 and less than or equal to 100.

4. electromagnetic oven according to claim 1, which is characterized in that the inductance value of the first coil (111) is more than or equal to 1 Microhenry and less than or equal to 50 microhenrys；And/or the inductance value of second coil (112) is more than or equal to 50 microhenrys and is less than or equal to 150 microhenrys.

5. electromagnetic oven according to claim 1, which is characterized in that the number of turn of the first coil (111) is less than described the The number of turn of two coil (112).

6. according to claim 1-5 any one of them electromagnetic ovens, which is characterized in that first wire coil bracket (121) and institute The second wire coil bracket (122) is stated to connect and fix.

7. electromagnetic oven according to claim 6, which is characterized in that first wire coil bracket (121) and the second drum branch One in frame (122) is provided at least two hooks (120a), another is then provided with what is engaged with the hook (120a) Card hole (120b).

8. according to claim 2-5 any one of them electromagnetic ovens, which is characterized in that further include：First magnetic stripe (131), it is described First magnetic stripe (131) is arranged below second wire coil bracket (122)；The both ends of first magnetic stripe (131) are set respectively There are inner ring magnetic stripe, outer ring magnetic stripe, the inner ring magnetic stripe, outer ring magnetic stripe both pass through first wire coil bracket (121) and second The through-hole of wire coil bracket (122).

9. electromagnetic oven according to claim 8, which is characterized in that further include：Second magnetic stripe (132), second magnetic stripe (132) there is outer ring magnetic stripe in outer end, and the outer ring magnetic stripe passes through first wire coil bracket (121) and the second wire coil bracket (122) through-hole；Wherein, first magnetic stripe (131) and the alternate setting of the second magnetic stripe (132).

10. according to claim 1-5 any one of them electromagnetic ovens, which is characterized in that the output terminal of the first coil (111) (111b) and input terminal (111a) are respectively arranged with wire connection terminal, and the first coil (111) can pass through the wire connection terminal It is electrically connected to a power source；

The output terminal (112b) and input terminal (112a) of second coil (112) are respectively arranged with wire connection terminal, and described second Coil (112) can be electrically connected to a power source by the wire connection terminal.

11. electromagnetic oven according to claim 10, which is characterized in that the output terminal (111b) of the first coil (111) Input terminal (112a) also with second coil (112) is electrically connected.

12. a kind of coil panel of electromagnetic oven, including：First coil (111), the first coil (111) are arranged on the first drum On stent (121)；Second coil (112), second coil (112) are arranged on the second wire coil bracket (122)；

Wherein, first wire coil bracket (121) and the second wire coil bracket (122) are arranged in the bottom case of the electromagnetic oven；Institute The inductance value for stating first coil (111) is less than the inductance value of second coil (112).