CN209995916U

CN209995916U - electromagnetic heating cooking utensil

Info

Publication number: CN209995916U
Application number: CN201920204147.0U
Authority: CN
Inventors: 朱泽春; 刘斌; 金立旺; 胡文飞
Original assignee: Joyoung Co Ltd
Current assignee: Shandong Jiuchuang Home Appliance Co ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-01-31
Anticipated expiration: 2029-02-15

Abstract

The utility model discloses an electromagnetic heating cooking utensil, including fan and fan housing, the fan is installed in the fan housing, the fan housing has the air outlet, the coil panel, the part orientation of air outlet the outer fringe of coil panel, wherein, the lower surface of coil panel is not less than the lower surface of air outlet just the upper surface of coil panel is not higher than the upper surface of air outlet, so that the coil panel is located the height range of air outlet to increased the area that receives wind of coil panel, in the fan operation process, can furthest reduce the temperature rise of coil panel, improved the radiating effect.

Description

electromagnetic heating cooking utensil

Technical Field

The utility model belongs to the technical field of cooking utensil, especially, relate to kinds of electromagnetic heating cooking utensil.

Background

People can use cooking utensil often in the daily life process, and cooking utensil cooks food through the heat production, and at the operation in-process, the inside device of cooking utensil self also can generate heat, will satisfy cooking utensil normal work, then need to guarantee that the inside temperature of cooking utensil keeps in the temperature range of and decide.

Taking an electromagnetic oven as an example, an existing electromagnetic oven mainly comprises an upper cover, a base, a panel, a heating coil panel, a main control board, an operation board, a fan and other devices, wherein the heating coil panel, the main control board and other components are installed in an inner cavity defined by the upper cover and the base, and in the using process, the coil panel, the main control board and the like generate heat, so that the heat of the heating components needs to be dissipated timely in order to protect the normal operation of the components and the electromagnetic oven.

There are kinds of electromagnetism stoves in the existing market, be equipped with air inlet region and radiating area in it, the air inlet region is provided with the air intake, and the radiating area is provided with the air exit, is provided with the division board between air inlet region and the radiating area, and division board and base body shaping are gone into to the wind gap of fan, and the air outlet of fan is towards the radiating area, coil panel, main control board are located the radiating area, and division board and fan air outlet shell constitute the effective wall of air inlet region and radiating area.

However, the body molding design of the partition board and the base increases the molding difficulty of the base in aspect, increases the manufacturing cost, and in aspect, in the injection molding process of the partition board and the base, pits appear at the joint position of the partition board and the base due to various reasons (for example, the partition board is too thick or uneven in thickness), which not only affects the appearance of the product, but also destroys the sealing effect of the sealing isolation region.

In addition, the heating values of the electronic heating elements on the existing main control board are different in the using process, for example, an Insulated Gate Bipolar Transistor (IGBT) and a rectifier bridge stack on the main control board generate heat more than other electronic components in the operating process, and if the heat is not dissipated in time, normal operation is affected and the service life of the electronic heating cooking appliance can be reduced.

It can be seen that the prior art has yet to be improved .

SUMMERY OF THE UTILITY MODEL

The utility model provides kinds of electromagnetic heating cooking utensil to solve at least technical problem among the above-mentioned technical problem.

The utility model discloses the technical scheme who adopts does:

an electromagnetic heating cooking appliance comprises a fan and a fan shell, wherein the fan is arranged in the fan shell, the fan shell is provided with an air outlet, a coil disc is arranged on the outer edge of the air outlet, the lower surface of the coil disc is not lower than the lower surface of the air outlet, and the upper surface of the coil disc is not higher than the upper surface of the air outlet, so that the coil disc is positioned in the height range of the air outlet.

The coil disc is a single-layer spirally wound coil disc.

The cooking appliance further comprises: the IGBT bridge rectifier comprises a circuit board, a power supply and a power supply, wherein the circuit board is provided with an IGBT and a bridge rectifier, and the IGBT and the bridge rectifier are both positioned in the edge area of the circuit board; the air outlet is partially arranged on the outer edge of the radiating fin, the IGBT and the bridge rectifier are both positioned below the radiating fin, the radiating fin comprises a plurality of radiating fins, and the density of the radiating fins on the radiating fin in the area corresponding to the IGBT is greater than that of the radiating fins in the area corresponding to the bridge rectifier.

Still be provided with the inductance on the circuit board, the inductance is located the fin is back to sides of air outlet, just the inductance with the bridge heap is adjacent.

Still be provided with filter capacitor on the circuit board, filter capacitor is located the fin is back to sides of air outlet, just filter capacitor with the IGBT is adjacent.

The filter capacitor is arranged in a horizontal mode relative to the circuit board, the height of the filter capacitor before falling is larger than that of the radiating fin, and the height of the filter capacitor after falling is smaller than that of the radiating fin.

The distance between the filter capacitor and the radiating fin is greater than the distance between the inductor and the radiating fin; still be provided with the deep bead on the circuit board, the deep bead with filter capacitor mutually supports and forms the structure of keeping out the wind, the structure of keeping out the wind makes the warp the fin flow direction filter capacitor with the wind part of deep bead flows back to the inductance.

The circuit board is further provided with a resonant capacitor, the resonant capacitor is located on the side, back to the radiating fin, of the inductor, and the distance between the resonant capacitor and the radiating fin is larger than the distance between the filter capacitor and the radiating fin.

The cooking utensil further comprises a bottom cover and a positioning plate fixedly connected with the bottom cover, the positioning plate is located on the same side of the fan and the circuit board, a wire groove and a second wire groove are formed in the positioning plate, a power supply circuit electrically connected with the fan is connected with the circuit board after passing through the wire groove and the second wire groove, and the circuit board is detachably connected with the positioning plate.

Cooking utensil has air inlet district, heat dissipation district and sets up division board between air inlet district and the heat dissipation district, the air inlet district is provided with the air intake, the heat dissipation district is provided with the air outlet, fan and fan housing set up the air inlet district, the coil panel with the circuit board sets up the heat dissipation district.

Since the technical scheme is used, the utility model discloses the beneficial effect who gains does:

1. the utility model provides a coil panel is located the height range of air outlet to increased the area that receives wind of coil panel, the fan operation in-process can reduce furthest the temperature rise of coil panel improves the radiating effect.

2. The utility model discloses electronic component on the circuit board is according to the height of the heat production quantity of operation in separately and rationally arranges to radiating demand height separately, and the heat production quantity is high and the radiating of urgent need, sets up in the position that is close to the air outlet, and the heat production quantity is low and can satisfy the setting of heat dissipation requirement through self heat dissipation and be keeping away from the air outlet is distance a little far away slightly, through this kind of reasonable layout, utilizes wind layer upon layer, has not only promoted each electronic component's on the circuit board radiating efficiency, has improved the radiating effect, has promoted the security performance of circuit board moreover.

3. The utility model discloses in the IGBT with the bridge rectifier sets up side by side, just the IGBT with the radiating fin's that the bridge rectifier corresponds density is not and is sent, particularly, the radiating fin's that the IGBT corresponds density is denser, the radiating fin's that the bridge rectifier corresponds density is more sparse, and such design has saved the manufacturing cost of fin when having reduced the weight of fin.

4. Filter capacitor is the highest original paper of high degree in electromagnetic heating cooking utensil's the circuit board, and the whole thickness of whole cooking utensil has highly been decided to height after its installation, the utility model discloses in filter capacitor is the back of falling down, and its height that highly is less than the fin to reduce the whole thickness of product, satisfied the demand of consumer to ultra-thin model.

5. The utility model provides a wire casing and second wire casing of the power supply line that is used for fixed fan are offered on the locating plate, for making things convenient for the drawing die, the locating plate is in second wire casing department still is provided with the lug of the drawing die of being convenient for, and this lug constitutes can fix the buckle of circuit board, that is to say, shaping of locating plate just can realize two kinds of functions, and the shaping of locating plate can be accomplished by oblique tops, has reduced the mould cost, thereby has reduced cooking utensil's cost of manufacture.

Drawings

The accompanying drawings, which are incorporated herein and constitute part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of the invention, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to unduly limit the invention, and in which:

fig. 1 is a top view of embodiments of the present invention.

Fig. 2 is an exploded view of embodiments of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 1.

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

Fig. 5 is an isometric view of the circuit board and the electronic components thereon of embodiments of the present invention.

Fig. 6 is a top view of embodiments of the present invention showing the circuit board and the electronic components thereon.

Fig. 7 is a side view of embodiments of the present invention showing the circuit board and its electronic components.

Wherein the content of the first and second substances,

1. the air conditioner comprises a bottom cover 2, a fan 3, a fan shell 31, an air outlet 311, an upper surface 312 of the air outlet, a lower surface 4 of the air outlet, a power supply line 5, a coil panel 51, an upper surface 52 of the coil panel, a lower surface 6 of the coil panel, a circuit board 7, a heat sink 71, a heat sink fin 8, an IGBT 9, a bridge rectifier 10, an inductor 11, a filter capacitor 12, a resonance capacitor 13, a wind shield 14, an air inlet 15, an air outlet 16, a partition plate 17, a positioning plate 171, a th wire groove 172, a second wire groove 173, and a

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the present application, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like shall be construed , for example, as being fixedly connected, detachably connected, or in a body, mechanically connected, electrically connected, communicating, directly connected, indirectly connected through an intermediary, communicating between two elements, or interacting between two elements.

In the description herein, reference to the description of the terms " embodiments", " embodiments", "examples", "specific examples", or " examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least embodiments or examples of the invention.

As shown in fig. 1 to 7, kinds of electromagnetic heating cooking appliances include, but are not limited to, an induction cooker, an electromagnetic heating electric cooker, an electromagnetic heating pressure cooker, and the like.

As shown in fig. 1 and 2, the cooking appliance includes a fan 2 and a fan housing 3, the fan 2 is installed in the fan housing 3, and the fan housing 3 has an air outlet 31. Preferably, in this embodiment, the fan 2 is a vortex fan, and the air flow direction of the vortex fan is perpendicular to the rotating shaft, so that the vortex fan can output larger air volume in a smaller space, and the heat dissipation effect is better. Of course, the type of the fan 2 is not limited to the above-mentioned vortex fan, and other types of fans may be used.

As shown in fig. 1 and 2, in the present embodiment, the cooking appliance further includes a coil panel 5, and a portion of the air outlet 31 faces an outer edge of the coil panel 5.

The utility model provides a cooking utensil utilizes alternating current to produce the alternating magnetic field that the direction constantly changes through coil panel 5, and the vortex current will appear in the magnetic conduction pan that is in alternating magnetic field, and the joule heat effect of vortex current makes the pan heat up to realize the heating the utility model aims at be the cooling of realizing coil panel 5, therefore the material of coil panel 5 and the structural style of coil do not do the utility model discloses the content of focusing on in focus.

In this embodiment, as shown in fig. 4, the lower surface 52 of the coil disk is not lower than the lower surface 312 of the air outlet and the upper surface 51 of the coil disk is not higher than the upper surface 311 of the air outlet, so that the coil disk 5 is located within the height range of the air outlet 31, thereby increasing the wind area of the coil disk 5, and under the condition of the same air output, compared with the prior art in which only part of the coil disk 5 is included within the height range of the air outlet 31, the coil disk 5 in this embodiment can dissipate heat more quickly.

As shown in fig. 5 to 7, the cooking appliance further includes a circuit board 6, the circuit board 6 is provided with an IGBT8 (insulated gate bipolar transistor) and a bridge stack 9, the bridge stack 9 is used for rectifying the commercial power alternating current into direct current, and the IGBT8 is used for inverting the direct current rectified by the bridge stack 9 into high-frequency alternating current, so as to generate an induced magnetic field. The operating characteristics of the IGBT8 and the bridge rectifier 9 determine that the IGBT8 and the bridge rectifier 9 can generate huge heat when in operation, and in order to avoid damage caused by overhigh temperature of the IGBT8 and the bridge rectifier 9, the cooking utensil needs to be cooled in the using process.

In this embodiment, as shown in fig. 7, the IGBT8 and the bridge 9 are preferably arranged side by side, so that the structure of the circuit board 6 is more compact, and the IGBT8 and the bridge 9 are both located in the edge region of the circuit board 6 and near the air outlet 31.

The cooking appliance further comprises a heat sink 7, and part of the air outlet 31 faces the outer edge of the heat sink 7 to guide air towards the heat sink 7. The IGBT8 and the bridge rectifier 9 are both located below the heat sink 7, the heat sink 7 includes a plurality of heat dissipation fins 71, and because the heat generation amount of the IGBT8 is greater than the heat generation amount of the bridge rectifier 9, and the forcing degree of the IGBT8 for the heat dissipation requirement is greater than the forcing degree of the bridge rectifier 9 for the heat dissipation requirement, in this embodiment, as an optimization, the density of the heat dissipation fins 71 in the region corresponding to the IGBT8 on the heat sink 7 is greater than the density of the heat dissipation fins 71 in the region corresponding to the bridge rectifier 9, so that the heat dissipation efficiency is improved, the weight of the heat sink 7 is reduced, and the cost for manufacturing the heat sink 7 is saved.

It should be noted that, certainly, the IGBT8 and the bridge rectifier 9 listed in the above embodiments share heat dissipation fins 7, which are only embodiments of the present invention, the heat dissipation of the IGBT8 and the bridge rectifier 9 in the present invention is not limited to the above-mentioned manner of sharing heat dissipation fins, and two heat dissipation fins may be provided to respectively dissipate the heat of the IGBT8 and the bridge rectifier 9, and the density of the heat dissipation fins of the two heat dissipation fins may also be designed to be sparse and dense according to the above-mentioned urgency of heat dissipation, so as to reduce the cost of manufacturing heat dissipation fins with two or more sparse and dense degrees, which needs to separately increase the mold.

As shown in fig. 5 and 6, an inductor 10 is further disposed on the circuit board 6, the inductor 10 is located on the side of the heat sink 7 facing away from the air outlet 31, and the inductor 10 is adjacent to the bridge 9, that is, the inductor 10 faces a position where the density of the heat sink fins 71 of the heat sink 7 is relatively sparse.

As shown in fig. 5 and 6, the circuit board 6 is further provided with a filter capacitor 11, the filter capacitor 11 is located on the side of the heat sink 7 facing away from the air outlet 31, and the filter capacitor 11 is adjacent to the IGBT8, that is, the filter capacitor 11 faces a portion of the heat sink 7 where the density of the heat sink fins 71 is relatively dense.

In the prior art, most of the filter capacitors are the highest height components on the circuit board, and the filter capacitors with higher thickness on the circuit board are which are the main factors that the thickness of the whole cooking utensil is difficult to reduce because the thickness of the filter capacitors are difficult to reduce, therefore, in the preferred embodiment, the filter capacitors 11 are arranged in a horizontal mode relative to the circuit board 6, the height of the filter capacitors 11 before lying down is larger than the height of the radiating fins 7, and the height of the filter capacitors 11 after lying down is smaller than the height of the radiating fins 7, so that the thickness of the cooking utensil body can be reduced.

Of course, with the iterative upgrade of products, the situation that the highest part on the circuit board is the rest parts may occur, and in such a situation, the highest or higher part may be laid down as permitted by safety regulations by taking the horizontal installation manner of the filter capacitor as reference, so as to achieve the purpose of reducing the overall thickness of the cooking appliance.

, a wind screen 13 is further disposed on the circuit board 6, the wind screen 13 cooperates with the filter capacitor 11 to form a wind shielding structure, and the wind shielding structure causes part of the wind flowing to the filter capacitor 11 and the wind screen 13 through the heat sink 7 to flow back to the inductor 10, so as to further reduce the temperature rise of the inductor 10.

As shown in fig. 5 and 6, the circuit board 6 is further provided with a resonant capacitor 12, and the resonant capacitor 12 is located at the side of the inductor 10 facing away from the heat sink 7. the resonant capacitor 12 generates less heat than other electronic components and can satisfy the cooling requirement by its own heat dissipation, and therefore, the resonant capacitor 12 can be arranged at a position farther from the heat sink 7 than other electronic components on the circuit board 6.

In summary, the heat generation amount of each electronic component on the circuit board 6 is, from high to low: inductance 10, IGBT8, bridge rectifier 9, filter capacitor 11 and resonance capacitor 12, the urgency to the cooling is in proper order by anxious to the gentle: IGBT8, bridge rectifier 9, inductance 10, filter capacitance 11 and resonance capacitance 12, the utility model discloses combine calorific capacity and demand to the cooling, it is right electronic component on the circuit board 6 adopts reasonable ladder layout mode, utilizes layer upon layer to wind, has improved the radiating efficiency greatly.

As shown in fig. 2, the cooking utensil further comprises a bottom cover 1 and a positioning plate 17 fixedly connected with the bottom cover 1, the positioning plate 17 is located on the same side of the fan 2 and the circuit board 6, a wire groove 171 and a second wire groove 172 are formed in the positioning plate 17, and a power supply circuit 4 electrically connected with the fan 2 is connected with the circuit board 6 through the wire groove 171 and the second wire groove 172.

In the embodiment, in the forming process of the positioning plate 17, in order to facilitate die drawing, the positioning plate 17 is arranged at the second wire groove 172 and is further provided with a bump 173 facilitating die drawing, the bump 173 can be used for fixing a buckle of the circuit board 6, namely times of forming of the positioning plate 17 can achieve two functions, and the forming of the positioning plate 17 can be completed by inclined tops, so that the mold cost is reduced, and the manufacturing cost of the cooking utensil is reduced.

As shown in fig. 2, cooking utensil has air inlet district, radiating area, of course, the utility model provides a cooking utensil still can set up division board 16 between air inlet district and the radiating area, the air inlet district is provided with air intake 14, the radiating area is provided with air outlet 15, fan 2 and fan housing 3 set up the air inlet district, coil panel 5 with circuit board 6 sets up the radiating area, through the subregion, and through setting division board 16 can further step-by-step promotion radiating effect.

The utility model can be realized by adopting or using the prior art for reference in places which are not mentioned in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

An electromagnetic heating cooking appliance of the type , comprising:

the fan is arranged in the fan shell, and the fan shell is provided with an air outlet;

a coil disk, a portion of the air outlet facing an outer edge of the coil disk;

the lower surface of the coil panel is not lower than the lower surface of the air outlet and the upper surface of the coil panel is not higher than the upper surface of the air outlet, so that the coil panel is located within the height range of the air outlet.
2. kinds of electromagnetic heating cooking appliances according to claim 1,

the coil disc is a single-layer spirally wound coil disc.
3. The electromagnetic heating cooking appliance of claim 1, wherein the cooking appliance further comprises:

the IGBT bridge rectifier comprises a circuit board, a power supply and a power supply, wherein the circuit board is provided with an IGBT and a bridge rectifier, and the IGBT and the bridge rectifier are both positioned in the edge area of the circuit board; and

the air outlet of the radiating fin faces the outer edge of the radiating fin, the IGBT and the bridge rectifier are both located below the radiating fin, the radiating fin comprises a plurality of radiating fins, and the density of the radiating fins on the radiating fin in the area corresponding to the IGBT is greater than that of the radiating fins in the area corresponding to the bridge rectifier.
4. electromagnetic heating cooking appliance according to claim 3,

still be provided with the inductance on the circuit board, the inductance is located the fin is back to sides of air outlet, just the inductance with the bridge heap is adjacent.
5. electromagnetic heating cooking appliance according to claim 4,

still be provided with filter capacitor on the circuit board, filter capacitor is located the fin is back to sides of air outlet, just filter capacitor with the IGBT is adjacent.
6. electromagnetic heating cooking appliance according to claim 5,

the filter capacitor is arranged in a horizontal mode relative to the circuit board, the height of the filter capacitor before falling is larger than that of the radiating fin, and the height of the filter capacitor after falling is smaller than that of the radiating fin.
7. electromagnetic heating cooking appliance according to claim 5,

the distance between the filter capacitor and the radiating fin is greater than the distance between the inductor and the radiating fin;

still be provided with the deep bead on the circuit board, the deep bead with filter capacitor mutually supports and forms the structure of keeping out the wind, the structure of keeping out the wind makes the warp the fin flow direction filter capacitor with the wind part of deep bead flows back to the inductance.
8. electromagnetic heating cooking appliance according to claim 5,

the circuit board is also provided with a resonant capacitor, and the resonant capacitor is positioned on the side of the inductor back to the radiating fin;

the distance between the resonance capacitor and the radiating fin is larger than the distance between the filter capacitor and the radiating fin.
9. electromagnetic heating cooking appliance according to claim 3,

the cooking utensil further comprises a bottom cover and a positioning plate fixedly connected with the bottom cover, and the positioning plate is positioned on the same side of the fan and the circuit board;

an th wire groove and a second wire groove are formed in the positioning plate, and a power supply circuit electrically connected with the fan is connected with the circuit board after passing through the th wire groove and the second wire groove;

the circuit board is detachably connected with the positioning plate.
10. electromagnetic heating cooking appliance according to claim 3,

cooking utensil has air inlet district, heat dissipation district and sets up division board between air inlet district and the heat dissipation district, the air inlet district is provided with the air intake, the heat dissipation district is provided with the air outlet, fan and fan housing set up the air inlet district, the coil panel with the circuit board sets up the heat dissipation district.