CN209246151U - induction cooker - Google Patents

Abstract

The utility model provides an electromagnetic cooker, which comprises a heating panel, a casing and an electromagnetic wire reel. The heating panel cover is arranged above the casing. The heating panel and the casing together form an accommodation cavity for accommodating the electromagnetic wire reel. It is arranged in the accommodating cavity; the induction cooker also includes a first shielding layer for weakening the strength of the magnetic field emitted by the electromagnetic coil, the first shielding layer is a melting layer, and in the direction perpendicular to the heating panel, at least part of the first shielding layer Located below the solenoid coil. The electromagnetic cooker provided by the utility model can weaken the magnetic field intensity emitted by the electromagnetic wire coil to the back of the electromagnetic cooker, prevent the reverse heating of the electromagnetic coil, reduce the temperature on the back of the electromagnetic cooker when it is used, and reduce potential safety hazards; A shielding layer can effectively reduce production costs and improve processing efficiency.

Description

induction cooker

technical field

The utility model relates to the technical field of household appliances, in particular to an electromagnetic cooker.

Background technique

Induction hobs are the product of the modern kitchen revolution, generating heat directly at the bottom of the pot without an open flame or conduction heating, so thermal efficiency has been greatly improved. The induction cooker has no fumes, is portable, convenient and simple, and has become a must-have for modern family kitchens.

In the prior art, the induction cooker includes a casing and a heating panel with a cover on the top of the casing. The casing is provided with an electromagnetic wire reel and a control circuit board. The heating panel is generally a glass-ceramic plate. In the panel heating area, the casing may be made of plastic material, and the casing includes a support portion for supporting the heating panel. When in use, the alternating current is fed into the electromagnetic coil, and the 220V alternating current is rectified into direct current through a rectifying element (such as a silicon rectifier), and a high-frequency magnetic field is generated in the electromagnetic coil through LC resonance, and the alternating magnetic force line is cut by using an iron pot. , creates a massive vortex in the bottom of the pan, which creates the heat needed for cooking.

However, the electromagnetic coil will emit heat to the bottom of it at the same time when it is working. After a long time of use, the excessively high back temperature will bring serious safety hazards.

Utility model content

In order to overcome the above-mentioned defects in the prior art, the purpose of this utility model is to provide an induction cooker. The electromagnetic cooker of the utility model can weaken the magnetic field intensity emitted by the electromagnetic wire coil to the back of the induction cooker, thereby reducing the back temperature of the induction cooker when it is used, and reducing the safety. Hidden danger.

An embodiment of the utility model provides an induction cooker, which includes a heating panel, a housing and an electromagnetic coil, the heating panel cover is arranged above the housing, and the heating panel and the housing together form a An accommodating chamber for accommodating the electromagnetic wire reel, the electromagnetic wire reel is arranged in the accommodating chamber; the electromagnetic oven further includes a first shielding layer for weakening the strength of the magnetic field emitted by the electromagnetic wire reel, the first shielding layer The first shielding layer is a spray layer, and in a direction perpendicular to the heating panel, at least part of the first shielding layer is located below the electromagnetic coil.

In the utility model, by setting the first shielding layer, in the direction perpendicular to the heating panel, at least part of the first shielding layer is located below the electromagnetic coil, so that the first shielding layer can be used to weaken the magnetic field emitted by the electromagnetic coil to the back of the induction cooker Strength, prevent the reverse heating of the electromagnetic coil, reduce the back temperature when the induction cooker is used, and reduce safety hazards.

The first shielding layer in the utility model is a spray layer, which is also called thermal spraying or spray welding, and has the characteristics of low cost and fast processing, and the processing of the first shielding layer by spraying can effectively reduce production costs. Improve processing efficiency.

In the above-mentioned induction cooker, optionally, in a direction perpendicular to the heating panel, the projection of the first shielding layer covers the projection of the electromagnetic wire tray.

Furthermore, in the direction perpendicular to the heating panel, making the projection of the first shielding layer cover the projection of the electromagnetic wire coil can ensure the best electromagnetic shielding effect, further reduce the back temperature of the induction cooker when it is in use, and reduce potential safety hazards.

In the above-mentioned induction cooker, optionally, in a direction perpendicular to the heating panel, the projection of the first shielding layer coincides with the projection of the electromagnetic wire tray.

In the direction perpendicular to the heating panel, the projection of the first shielding layer is overlapped with the projection of the electromagnetic coil, which can reduce material loss and save costs on the basis of the above-mentioned embodiment.

As described above for the induction cooker, optionally, the thickness of the first shielding layer is in the range of 0.3-0.8mm.

If the thickness of the first shielding layer is too thin, its shielding effect is poor, and the backside temperature cannot be reduced when the induction cooker is used; if the thickness of the first shielding layer is too thick, it is easy to peel off due to the process. Therefore, setting the thickness range of the first shielding layer between 0.3-0.8 mm can be balanced, can effectively prevent the first shielding layer from being worn off, and has a better electromagnetic shielding effect.

Further, the thickness of the first shielding layer is preferably 0.4mm. The first shielding layer of 0.4 mm has a better electromagnetic shielding effect and is easy to realize in terms of technology.

As for the above-mentioned induction cooker, optionally, the first shielding layer is made of low magnetic permeability material.

By using low magnetic permeability material to make the first shielding layer, the shielding of the magnetic field of the electromagnetic coil can be better realized, and at the same time, the calorific value of the first shielding layer can be reduced.

As described above for the induction cooker, optionally, the first shielding layer is a low-temperature metal layer.

The low-temperature metal has a relatively low melting point. When the low-temperature metal is used for processing, its melting point is lower than the melting point of the casing plastic, so that the casing can be prevented from being damaged by the melting of the metal.

As for the above-mentioned induction cooker, optionally, the first shielding layer is any one of a zinc-aluminum alloy layer, a zinc alloy layer or an aluminum alloy layer.

The zinc-aluminum alloy layer, the zinc alloy layer and the aluminum alloy layer are high-quality low-temperature metal layers with low costs, which can reduce the production cost of the induction cooker.

As for the above-mentioned induction cooker, optionally, the first shielding layer is disposed on a side of the electromagnetic wire tray away from the heating panel.

The first shielding layer is arranged on the back of the electromagnetic coil, which can be directly completed by adding a spraying process when processing the electromagnetic coil, so as to facilitate subsequent installation and use; and the shape of the first shielding layer can be compared with the electromagnetic coil. The coils are identical in shape, saving material.

As for the above electromagnetic oven, optionally, the first shielding layer is arranged on the bottom surface of the housing.

Further optionally, the first shielding layer is disposed on the upper surface of the bottom surface.

The first shielding layer is arranged on the upper surface of the bottom surface, that is, the first shielding layer is hidden in the accommodating cavity jointly surrounded by the heating panel and the casing, so that the first shielding layer does not leak out, thereby improving the induction cooker to a certain extent. aesthetics.

Further optionally, the first shielding layer is disposed on the lower surface of the bottom surface.

The first shielding layer is arranged on the lower surface of the bottom surface, and the first shielding layer can improve the strength and wear resistance of the bottom surface, so that the bottom surface of the induction cooker is not easy to be damaged.

In the above-mentioned induction cooker, optionally, a second shielding layer is provided on the side of the electromagnetic wire tray, and the height of the second shielding layer in the direction perpendicular to the heating panel is greater than that of the electromagnetic wire tray in the vertical direction. Height in the direction of the heating panel.

By setting the second shielding layer on the side of the electromagnetic coil and surrounding the second shielding layer on the outside of the electromagnetic coil, the radiation of the electromagnetic coil to the surrounding can be reduced, so that the heating range of the electromagnetic coil is more concentrated, which is beneficial Improve heating effect.

In the electromagnetic oven provided by the utility model, by setting the first shielding layer, and in the direction perpendicular to the heating panel, at least part of the first shielding layer is located below the electromagnetic wire coil, so that the first shielding layer can be used to weaken the direction of the electromagnetic wire coil. The magnetic field strength emitted from the back of the induction cooker prevents the reverse heating of the electromagnetic coil, reduces the temperature on the back of the induction cooker when it is in use, and reduces potential safety hazards. In addition, the first shielding layer in the utility model is a spray layer. Melt spray is also called thermal spraying or spray welding, which has the characteristics of low cost and fast processing. Processing the first shield layer by spraying can effectively reduce production cost and improve processing efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is a schematic structural diagram of an electromagnetic oven provided by an embodiment of the utility model;

Fig. 2 is a schematic top view structure diagram after removing the heating panel in Fig. 1;

Fig. 3 is a partial enlarged view of part A in Fig. 1 under a possible implementation manner;

Fig. 4 is a partially enlarged view of part A in Fig. 1 under another possible implementation manner.

Reference signs:

100 - heating panel;

200-shell;

210-upper casing;

220-lower shell;

300-control panel;

400-fan;

500-power board;

600-magnetic coil;

700 - sensor;

800-power cord;

1000 - first shielding layer.

Detailed ways

In the prior art, the induction cooker includes a casing and a heating panel with a cover on the top of the casing. The casing is provided with an electromagnetic wire reel and a control circuit board. The heating panel is generally a glass-ceramic plate. In the panel heating area, the casing may be made of plastic material, and the casing includes a support portion for supporting the heating panel. When in use, the alternating current is fed into the electromagnetic coil, and the 220V alternating current is rectified into direct current through a rectifying element (such as a silicon rectifier), and a high-frequency magnetic field is generated in the electromagnetic coil through LC resonance, and the alternating magnetic force line is cut by using an iron pot. , creates a massive vortex in the bottom of the pan, which creates the heat needed for cooking.

However, when the electromagnetic coil is working, it will not only heat up the heating area on the panel, but also radiate heat to the bottom of the electromagnetic coil, so that the lower shell of the induction cooker is heated. The back side temperature can pose a serious safety hazard. For example, when the induction cooker is placed on a wooden table, the excessively high temperature on the back of the induction cooker can easily cause fires and other accidents; when the induction cooker is placed on an iron table, the excessively high temperature on the back of the induction cooker can easily burn the operator, bringing safety hazards .

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments.

Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

The content of the utility model will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can understand the content of the utility model in more detail.

Fig. 1 is a schematic structural diagram of an induction cooker provided by an embodiment of the utility model; Fig. 2 is a schematic top view structure diagram after removing the heating panel in Fig. 1; Fig. 3 is a schematic diagram of part A in Fig. 1 under a possible implementation mode Partial enlarged view; FIG. 4 is a partial enlarged view of part A in FIG. 1 under another possible implementation; please refer to FIGS. 1-4 . This embodiment provides an induction cooker, which includes a heating panel 100, a housing 200 and a magnetic wire reel 600. The heating panel 100 is covered above the housing 200, and the heating panel 100 and the housing 200 are jointly enclosed to accommodate the electromagnetic wire reel. 600, the electromagnetic wire reel 600 is arranged in the accommodating chamber; the induction cooker also includes a first shielding layer 1000 for weakening the strength of the magnetic field emitted by the electromagnetic wire reel 600, the first shielding layer 1000 is a melting layer, and is perpendicular to In the direction of the heating panel 100 , at least a part of the first shielding layer 1000 is located below the electromagnetic coil 600 .

Specifically, the shape of the induction cooker in this embodiment can adopt any suitable shape, and generally can adopt a substantially rectangular parallelepiped shape. The induction cooker includes a casing 200 and a heating panel 100 covered on the casing 200. The casing 200 is composed of an upper casing 210 and a lower casing 220. The upper casing 210 has an opening, and the heating panel 100 is covered. on the opening. The housing 200 is the main appearance part of the induction cooker. The housing 200 can be made of plastic and other materials. The bottom of the housing 200 is provided with a plurality of legs for supporting the induction cooker. A certain distance is formed between the gaps to facilitate heat dissipation. The number of supporting legs is preferably four, which are respectively arranged at the four corners of the bottom of the casing. The outrigger can be made of the same material as that of the housing 200, and the two can be directly manufactured by using a mold in an integral molding manner.

After the heating panel 100 is covered on the casing 200, the heating panel 100 and the casing 200 together form an accommodating chamber for accommodating the electromagnetic wire reel 600, and the electromagnetic wire reel 600 is arranged in the accommodating chamber, and is connected with the heating panel The heating zone on the 100 is right on for easy heating of pans. In order to prevent the electromagnetic wire reel 600 from heating the casing 200 in reverse, the induction cooker is also provided with a first shielding layer 1000. In the direction perpendicular to the heating panel 100, at least part of the first shielding layer 1000 is located below the electromagnetic wire reel 600. The first The shielding layer 1000 can weaken the intensity of the magnetic field emitted by the electromagnetic coil 600 to the bottom surface of the housing 200 , thereby reducing the temperature of the back surface of the electromagnetic cooker during use and reducing potential safety hazards.

Further, the first shielding layer 1000 of this embodiment is formed by spraying, which is also called thermal spraying or spray welding, and has the characteristics of low cost and fast processing, and processing the first shielding layer 1000 by spraying can Effectively reduce production costs and improve processing efficiency.

Please continue to refer to FIGS. 1-2 , the induction cooker of this embodiment further includes a control board 300 , a fan 400 , a power board 500 , a sensor 700 and a power cord 800 . The power cord 800 is used to connect an external power source to provide power for the entire induction cooker. The power cord 800 is electrically connected to the power board 500 , and the power board 500 is electrically connected to the control board 300 , the fan 400 and the electromagnetic coil 600 , and the power cord 800 provides electric energy for the above-mentioned components through the power board 500 . The control board 300 communicates with the fan 400, the power board 500, the electromagnetic coil 600 and the sensor 700 to control the actions of the above-mentioned components and receive the data information fed back by them. The sensor 700 is arranged in the middle of the electromagnetic coil 600, and its sensing end is connected with the heating panel 100 for measuring the heating temperature when the electromagnetic oven is working. An air outlet corresponding to the fan 400 is provided on the casing 200 to quickly discharge the heat inside the induction cooker. When the induction cooker is in use, the power board 500 is energized after the power cord 800 is connected to an external power source, and the display area arranged on the heating panel 200 is lit at the same time. After pressing the power button, the blower fan 400, the electromagnetic coil 600 and the sensor 700 start to work at the same time, and the electromagnetic coil 600 heats the heating zone on the heating panel 200, so that the food in the pot placed on the heating zone is heated. cooking. At the same time, the sensor 700 detects the temperature of the heating zone at all times, and reflects the temperature information to the control board 300. A protection program can be set in the control board 300 to stop the heating action of the electromagnetic coil 600 when the temperature exceeds a preset value. When the power button is pressed after the cooking is finished, the display area on the heating panel 100 is promptly extinguished, and the blower fan 400 is still working at this moment, and stops working after the temperature in the induction cooker is lowered to a preset range.

In this embodiment, by setting the first shielding layer 1000, in the direction perpendicular to the heating panel 100, at least part of the first shielding layer 1000 is located below the electromagnetic wire reel 600, so that the first shielding layer 1000 can be used to weaken the electromagnetic wire reel 600 The intensity of the magnetic field emitted to the back of the induction cooker prevents the reverse heating of the electromagnetic coil 600, reduces the temperature of the back of the induction cooker when it is in use, and reduces potential safety hazards. The first shielding layer 1000 in this embodiment is a spray layer, which is also called thermal spraying or spray welding, and has the characteristics of low cost and fast processing. Processing the first shielding layer 1000 by spraying can effectively reduce production costs , improve processing efficiency.

Further, in the direction perpendicular to the heating panel 100, the projection of the first shielding layer 1000 covers the projection of the electromagnetic wire disc 600, that is, in the direction perpendicular to the heating panel 100, the projection of the electromagnetic wire disc 600 is located on the first shielding layer 1000 projection range. Covering the projection of the first shielding layer 1000 with the projection of the electromagnetic wire reel 600 can ensure the best electromagnetic shielding effect, further reduce the temperature of the back surface of the induction cooker when it is in use, and reduce potential safety hazards.

Furthermore, in the direction perpendicular to the heating panel 100, the projection of the first shielding layer 1000 coincides with the projection of the electromagnetic wire disc 600, that is, in the direction perpendicular to the heating panel 100, the projection of the electromagnetic wire disc 600 coincides with that of the first shielding layer 1000. The projection of shielding layer 1000 is exactly the same. In the direction perpendicular to the heating panel 100 , the projection of the first shielding layer 1000 and the projection of the electromagnetic wire coil 600 can be overlapped, so as to reduce material loss and save cost on the basis of the above-mentioned embodiment.

Further, the thickness δ of the first shielding layer 1000 in this embodiment is in the range of 0.3-0.8 mm. If the thickness of the first shielding layer 1000 is too thin, the shielding effect will be poor, and the temperature of the backside of the induction cooker cannot be effectively reduced; if the thickness of the first shielding layer 1000 is too thick, it will easily peel off due to the process. Therefore, setting the thickness range of the first shielding layer 1000 between 0.3-0.8 mm can balance the above two situations, effectively prevent the first shielding layer 1000 from being worn off, and have a better electromagnetic shielding effect.

Furthermore, the thickness of the first shielding layer 1000 is preferably 0.4 mm. The first shielding layer 1000 of 0.4mm has better electromagnetic shielding effect, and is easy to realize in technology.

Further, the first shielding layer 1000 in this embodiment is made of low magnetic permeability material. By using low magnetic permeability material to make the first shielding layer 1000 , the shielding of the magnetic field of the electromagnetic wire reel 600 can be better realized, and at the same time, the calorific value of the first shielding layer 1000 can be reduced.

Further, the first shielding layer 1000 is a low-temperature metal layer. The low-temperature metal has a relatively low melting point. When the low-temperature metal is used for processing, its melting point is lower than the melting point of the plastic of the housing 200 , so the housing 200 can be prevented from being damaged by metal melting.

Furthermore, the first shielding layer 1000 in this embodiment may be any one of a zinc-aluminum alloy layer, a zinc alloy layer or an aluminum alloy layer. Zinc-aluminum alloy, zinc alloy and aluminum alloy are high-quality low-temperature metals with low cost, which can reduce the production cost of the induction cooker.

Further, in an optional implementation manner, the first shielding layer 1000 is disposed on the side of the electromagnetic wire reel 600 away from the heating panel 100 .

The first shielding layer 1000 is arranged on the back side of the electromagnetic wire reel 600, which can be directly completed by adding a melting process when processing the electromagnetic wire reel 600, so as to facilitate subsequent installation and use; and the first shielding layer 1000 can be made The shape of the coil is exactly the same as that of the magnetic wire coil 600, thereby saving material.

Further, in another optional implementation manner, the first shielding layer 1000 is disposed on the bottom surface of the casing 200 .

Optionally, as shown in FIG. 3 , in a possible implementation manner, the first shielding layer 1000 is disposed on the upper surface of the bottom surface of the casing 200 . The first shielding layer 1000 is arranged on the upper surface of the bottom surface, that is, the first shielding layer 1000 is hidden in the accommodating cavity jointly surrounded by the heating panel 100 and the casing 200, so that the first shielding layer 1000 does not leak out, so that To a certain extent, the aesthetics of the induction cooker is improved.

Optionally, as shown in FIG. 4 , in another possible implementation manner, the first shielding layer 1000 is disposed on the lower surface of the bottom surface of the casing 200 . The first shielding layer 1000 is arranged on the lower surface of the bottom surface, and the first shielding layer 1000 can improve the strength and wear resistance of the bottom surface, so that the bottom surface of the induction cooker is not easy to be damaged.

Further, a second shielding layer can also be provided on the side of the electromagnetic wire tray 600 , and the height of the second shielding layer in the direction perpendicular to the heating panel 100 is greater than the height of the electromagnetic wire tray 600 in the direction perpendicular to the heating panel 100 .

By setting the second shielding layer on the side of the electromagnetic wire disk 600 and surrounding the second shielding layer on the outside of the electromagnetic wire disk 600, the radiation of the electromagnetic wire disk 600 to the surroundings can be reduced, so that the heating range of the electromagnetic wire disk 600 is wider. Concentration is beneficial to improve the heating effect.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

It should be noted that, in the description of the present utility model, the terms "first" and "second" are only used to describe different components conveniently, and should not be understood as indicating or implying a sequence relationship, relative importance, or implicitly indicating Indicates the number of technical characteristics. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. a kind of electromagnetic oven, which is characterized in that described to add including heating panel (100), shell (200) and electromagnetic wire coil (600) Hot panel (100) lid is located at the top of the shell (200), and the heating panel (100) and the shell (200) surround jointly For accommodating the accommodating chamber of the electromagnetic wire coil (600), the electromagnetic wire coil (600) is arranged in the accommodating chamber；The electricity Magnetic furnace further includes the first screen layer (1000) for weakening the magnetic field strength that the electromagnetic wire coil (600) is issued, and described One shielded layer (1000) is meltallizing layer, on the direction perpendicular to the heating panel (100), at least partly described first shielding Layer (1000) is located at the lower section of the electromagnetic wire coil (600).

2. electromagnetic oven according to claim 1, which is characterized in that on the direction perpendicular to the heating panel (100), The projection of the first screen layer (1000) covers the projection of the electromagnetic wire coil (600).

3. electromagnetic oven according to claim 2, which is characterized in that on the direction perpendicular to the heating panel (100), The projection of the first screen layer (1000) is overlapped with the projection of the electromagnetic wire coil (600).

4. electromagnetic oven according to claim 1, which is characterized in that the thickness range of the first screen layer (1000) is 0.3-0.8mm。

5. electromagnetic oven according to claim 1, which is characterized in that the first screen layer (1000) is low temperature metal layer, The low temperature metal layer is any one of allumen layer, zinc alloy layer or aluminium alloy layer.

6. any electromagnetic oven in -5 according to claim 1, which is characterized in that the first screen layer is arranged in the electricity Magnet-wire disk (600) is in the one side of the heating panel (100).

7. any electromagnetic oven in -5 according to claim 1, which is characterized in that first screen layer (1000) setting exists On the bottom surface of the shell (200).

8. electromagnetic oven according to claim 7, which is characterized in that the first screen layer (1000) is arranged in the bottom surface Upper surface.

9. electromagnetic oven according to claim 7, which is characterized in that the first screen layer (1000) is arranged in the bottom surface Lower surface.

10. any electromagnetic oven in -5 according to claim 1, which is characterized in that the side of the electromagnetic wire coil (600) is also Equipped with secondary shielding layer, the secondary shielding layer is being greater than the electricity perpendicular to the height on the heating panel (100) direction Magnet-wire disk (600) is perpendicular to the height on the heating panel (100) direction.