CN107509264B - Electromagnetic heating furnace core of electric cooker and electromagnetic heating electric cooker - Google Patents
Electromagnetic heating furnace core of electric cooker and electromagnetic heating electric cooker Download PDFInfo
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- CN107509264B CN107509264B CN201710884686.9A CN201710884686A CN107509264B CN 107509264 B CN107509264 B CN 107509264B CN 201710884686 A CN201710884686 A CN 201710884686A CN 107509264 B CN107509264 B CN 107509264B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/12—Cooking devices
- H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
- H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/2483—Warming devices with electrical heating means
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
- H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/02—Induction heating
- H05B2206/022—Special supports for the induction coils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- General Induction Heating (AREA)
- Cookers (AREA)
Abstract
The invention discloses an electromagnetic heating furnace core of an electric cooker, which comprises a cooker body, wherein an arc transition part is arranged at one end of the side wall of the cooker body, which is connected with the bottom wall of the cooker body; the electromagnetic heating furnace core comprises a furnace core outer shell, a coil mounting piece and an electromagnetic heating coil; the furnace core outer shell is provided with a first accommodating cavity for accommodating the pot body; one end of the furnace core outer shell is provided with a first opening communicated with the first accommodating cavity; the coil mounting piece is arranged on the side wall of the furnace core outer shell; the electromagnetic heating coil is wound on the coil mounting part to form an electromagnetic coil part; the electromagnetic coil part corresponds to the arc transition part of the pot body. By adopting the electromagnetic heating furnace core of the electric cooker, water and food materials in the cooker body can be uniformly heated on the premise of ensuring the heating effect and keeping high thermal efficiency.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an electromagnetic heating furnace core of an electric cooker and the electromagnetic heating electric cooker.
Background
At present, cooking appliances on the market gradually transit from conventional heating to electromagnetic heating, such as an electromagnetic heating electric cooker, an electromagnetic heating pressure cooker, an electromagnetic oven and the like, and all belong to the category of electromagnetic induction heating type cooking appliances; the electromagnetic heating has the characteristics of cleanness, sanitation, large firepower, low energy consumption and high efficiency, and the characteristics enable the electromagnetic heating technology to be further applied to kitchen cooking equipment.
In the existing electric cookers such as electric cookers and electric pressure cookers which adopt electromagnetic induction heating, an electromagnetic wire coil is arranged inside a machine body of the electric cookers, and the electromagnetic wire coil generally comprises a wire coil bracket, a coil and a magnetizer; when the electromagnetic heating device works, a cooking container (pot body) is placed above the electromagnetic wire coil, electromagnetic eddy current is generated by utilizing the coil and the magnetizer, and the pot body is heated in the circulation process of a magnetic field, so that the food in the pot body is heated and cooked; in the process of implementing the invention, the inventor finds that the heating coil of the existing electromagnetic heating electric cooker is usually wound at the bottom of the cooker body, the area of the cooker body generating heat is mainly concentrated at the bottom of the cooker body, and the coil is often distributed in a radiation ring shape, and the magnetic field intensity is not uniform, so that when the existing electromagnetic heating electric cooker is used for heating and cooking food materials, such as soup cooking, the heating area is small and concentrated, the heating of the cooker body is not uniform, and water and the food materials in the cooker body cannot be uniformly heated.
Disclosure of Invention
The embodiment of the invention aims to provide an electromagnetic heating furnace core of an electric cooker and the electromagnetic heating electric cooker, which can uniformly heat water and food materials in a cooker body on the premise of ensuring the heating effect and keeping high thermal efficiency.
In order to achieve the above object, an embodiment of the present invention provides an electromagnetic heating furnace core of an electric cooker, where the electric cooker includes a cooker body, and an arc transition portion is disposed at one end of a side wall of the cooker body, which is connected to a bottom wall of the cooker body; the electromagnetic heating furnace core comprises a furnace core outer shell, a coil mounting piece and an electromagnetic heating coil; the furnace core outer shell is provided with a first accommodating cavity for accommodating the pot body; one end of the furnace core outer shell is provided with a first opening communicated with the first accommodating cavity; the coil mounting piece is arranged on the side wall of the furnace core outer shell; the electromagnetic heating coil is wound on the coil mounting part to form an electromagnetic coil part; the electromagnetic coil part corresponds to the arc transition part of the pot body.
Compared with the prior art, the electromagnetic heating furnace core of the electric cooker disclosed by the invention has the advantages that the coil mounting piece is arranged on the furnace core outer shell, the electromagnetic heating coil is wound on the coil mounting piece, and the wound position of the electromagnetic heating coil corresponds to the first arc transition part of the furnace core outer shell; then, a pot body of the electric cooker is placed in a first accommodating cavity of the furnace core outer shell, and the first arc transition part corresponds to the arc transition part of the pot body, so that an electromagnetic heating coil wound on the coil mounting part and corresponding to the first arc transition part of the furnace core outer shell corresponds to the arc transition part of the pot body; through input high frequency current among the electromagnetic heating coil for produce alternating magnetic field around, above-mentioned alternating magnetic field can make the pot body itself produce the vortex, and the magnetic line of force pierces through the pot body and makes the pot body generate heat, thereby the circular arc transition portion of the pot body forms round electromagnetic heating region, and is right the circular arc transition portion of the pot body encircles the heating, thereby realizes right water in the pot body and the even heating of eating the material guarantee simultaneously heating effect and keep high thermal efficiency.
Further, the coil mount comprises a number of coil brackets; the side wall of the furnace core outer shell is also provided with a plug-in component correspondingly matched with the coil support, and the coil support is uniformly distributed on the side wall of the furnace core outer shell through matching with the plug-in component; a first arc transition part is arranged at one end of the side wall of the furnace core outer shell, which is connected with the bottom wall of the furnace core outer shell; the bending angle of the coil support is correspondingly matched with the radian of the first arc transition part; the electromagnetic coil part corresponds to the first arc transition part; the coil support is provided with a plurality of bosses, a winding groove is formed between every two adjacent bosses, and the electromagnetic heating coil is wound in the winding groove through limiting and is arranged on the coil mounting piece.
As an improved solution of the embodiment of the present invention, in the electromagnetic heating furnace core of the electric cooker provided in this embodiment, the coil mounting component adopts a sub-coil fixing structure, and is divided into a plurality of coil brackets, and the coil brackets are mounted on the furnace core outer casing through matching with the insertion component arranged on the side wall of the furnace core outer casing, so that the coil brackets surround the outer surface of the side wall of the furnace core outer casing; a boss arranged on the coil support forms a winding groove, the electromagnetic heating coil is wound and limited in the winding groove along the side wall of the furnace core outer shell, and finally the electromagnetic heating coil correspondingly surrounds a first arc transition part of the furnace core outer shell; above-mentioned structure is in integrated into one piece for prior art set up annular indent wire winding groove or wire winding boss on the surface or the internal surface of furnace core shell body, reduced the die sinking, the production processing degree of difficulty of furnace core shell body, just coil support installs convenient and fast, and the production preparation technical requirement of independent processing is lower.
Furthermore, the plug-in component is of a columnar structure; one end of the plug-in component is connected with the first opening, and the other end of the plug-in component is provided with a plug-in groove; one end of the coil support is provided with an insertion part correspondingly matched with the insertion groove, one end of the coil support is connected with the other end of the insertion piece through the matching of the insertion part and the insertion groove, and the other end of the coil support is connected with the bottom wall of the furnace core outer shell through a connecting piece.
As an improved solution of the embodiment of the present invention, in the electromagnetic heating furnace core of the electric cooker provided in this embodiment, the insertion member is a cylindrical structure uniformly distributed on the upper half portion of the sidewall of the outer shell of the furnace core, and one end of the insertion member is connected to the first opening, the other end of the insertion member is connected to one end of the coil support by inserting the insertion portion of the coil support into the insertion slot, and the other end of the coil support is connected to the bottom wall of the outer shell of the furnace core by the connection member; on the one hand, coil bracket passes through the cartridge with the connecting piece is installed on the lateral wall of wick shell body, and simple to operate is swift, and on the other hand, connect the cartridge with coil bracket has formed evenly distributed jointly in additional strengthening on the lateral wall of wick shell body has increased the intensity and the rigidity of wick shell body prevent the wick shell body warp.
Further, the electromagnetic heating furnace core also comprises a ferrite magnetizer; the coil bracket is also provided with a plurality of buckling pieces, the ferrite magnetizer is clamped on the coil bracket through the matching of the ferrite magnetizer and the buckling pieces, and the ferrite magnetizer covers the electromagnetic heating coil limited in the winding groove; the ferrite magnetizer is in a straight strip shape or an L shape.
As an improved scheme of the embodiment of the invention, in the electromagnetic heating furnace core of the electric cooker provided by the embodiment of the invention, the ferrite magnetizer can strengthen the magnetic field of the electromagnetic heating coil during working, so that magnetic lines of force are gathered, and the magnetic field intensity at the position of the arc transition part of the pot body is improved; the ferrite magnetizer is embedded and directly clamped and fixed on the coil bracket through the clamping piece, so that the structure is simple, the magnetizer is convenient and quick to mount, and a winding structure of the electromagnetic heating coil is not interfered; compared with the prior art, improved assembly efficiency and assembly precision, also no longer need extra magnetizer installed part, material cost reduction, simultaneously ferrite magnetizer card is gone into behind the coil bracket, the one side of ferrite magnetizer is pressed and is pasted on the boss, make the ferrite magnetizer can press close to more spacing in the wire winding inslot electromagnetic heating coil is and cover it to performance that can be better the magnetism collecting effect of ferrite magnetizer promotes electromagnetic heating efficiency.
Further, the electromagnetic heating furnace core also comprises a furnace core inner shell; the furnace core inner shell is arranged in the first accommodating cavity through the first opening; the furnace core inner shell is provided with a second accommodating cavity which is used for placing the pot body and is correspondingly matched with the pot body, and one end of the furnace core inner shell is provided with a second opening communicated with the second accommodating cavity; a heat insulation cavity is formed between the furnace core inner shell and the furnace core outer shell; the heat insulation cavity is filled with heat insulation materials, and the heat insulation materials comprise high-molecular heat insulation foaming bodies.
As an improved scheme of the embodiment of the present invention, the electromagnetic heating furnace core of the electric cooker provided by the embodiment of the present invention adopts a double-layer heat insulation furnace core, the inner casing of the furnace core is disposed in the first accommodating cavity of the outer casing of the furnace core, the pot body is placed in the second accommodating cavity of the inner casing of the furnace core, the outer surfaces of the side wall and the bottom wall of the pot body are tightly attached to the inner surface of the inner casing of the furnace core, and the heat insulation material is filled between the inner casing of the furnace core and the outer casing of the furnace core, so that the pot body and the outside can be isolated by temperature conduction, and a good heat insulation effect is achieved, thereby improving the heating efficiency of the electromagnetic heating furnace core.
Further, a first arc transition part is arranged at one end, connected with the bottom wall of the furnace core outer shell, of the side wall of the furnace core outer shell; a second arc transition part is arranged at one end of the side wall of the furnace core inner shell connected with the bottom wall of the furnace core inner shell; the electromagnetic coil part corresponds to the first arc transition part and the second arc transition part; and the vertical distance between the first arc transition part of the furnace core outer shell and the second arc transition part of the furnace core inner shell is less than 20 millimeters.
As a modification of the above embodiment of the invention, this embodiment provides an electromagnetic heating core of an electric cooker, in which the vertical distance between the inner shell of the core and the outer shell of the core in the electromagnetic heating area is less than 20 mm, and is as small as possible to reach the high frequency of electromagnetic heating conversion.
Furthermore, a plurality of clamping pieces which are uniformly distributed are arranged on the outer surface of the side wall of the furnace core inner shell body close to the second opening, and clamping grooves which are correspondingly matched with the clamping pieces are arranged on the inner surface of the side wall of the furnace core outer shell body close to the first opening; the outer surface of the bottom wall of the inner shell of the furnace core is provided with a plurality of plug connectors which are uniformly distributed, and the inner surface of the bottom wall of the outer shell of the furnace core is provided with a plug-in groove which is correspondingly matched with the plug connectors.
As an improved scheme of the embodiment of the present invention, in the electromagnetic heating furnace core of the electric cooker provided by the embodiment of the present invention, the clamping member near the top opening of the inner shell of the furnace core is clamped and fixed in the clamping groove near the top opening of the outer shell of the furnace core, and the plug member of the bottom wall of the inner shell of the furnace core is inserted and fixed in the insertion groove of the bottom wall of the outer shell of the furnace core, so that the inner shell of the furnace core is installed and fixed in the first accommodating cavity of the outer shell of the furnace core, and the assembly is convenient and fast.
Furthermore, the furnace core outer shell and the furnace core inner shell are made of PPS plastic and glass fiber materials.
As an improved scheme of the embodiment of the invention, in the electromagnetic heating furnace core of the electric cooker provided by the embodiment of the invention, the outer shell of the furnace core and the inner shell of the furnace core are made of PPS plastic and glass fiber materials, so that the electromagnetic heating furnace core is resistant to high temperature and acid and alkali, and simultaneously, the magnetic field generated when the electromagnetic heating coil works cannot be influenced; consequently the stove core shell body with the conduction of temperature can be obstructed in the stove core interior casing, it is right the pot body keeps warm, can not influence again simultaneously and place around the outside electromagnetic heating coil of stove core shell body is right the electromagnetic induction heating of the pot body, therefore can effectively improve the heating efficiency of electromagnetic heating stove core.
Further, the electromagnetic heating furnace core also comprises an electromagnetic heating power plate; the electromagnetic heating coil is electrically connected with the electromagnetic heating power plate.
As an improved solution of the embodiment of the present invention, in the electromagnetic heating furnace core of the electric cooker provided by the embodiment, the control system of the electric cooker controls the power of the electromagnetic heating power plate according to different working modes or heating gears selected by a user through a human-computer interaction system of the electric cooker, and changes the magnitude of the output current of the electromagnetic power plate, that is, the magnitude of the energizing current of the electromagnetic heating coil, thereby realizing the autonomous and flexible control of the work of the electromagnetic heating furnace core, and ensuring the heating effect of the electric cooker when different cooking works or different cooking stages are executed.
The embodiment of the invention also provides an electromagnetic heating electric cooker which comprises a cooker body, a cooker cover arranged on the cooker body and a cooker body arranged in the cooker body, wherein an arc transition part is arranged at one end of the side wall of the cooker body, which is connected with the bottom wall of the cooker body; the electromagnetic heating electric cooker also comprises an electromagnetic heating furnace core which is arranged in the cooker body and is used for the electric cooker provided by the embodiment of the invention.
Compared with the prior art, the electromagnetic heating electric cooker disclosed by the invention has the advantages that by controlling the work of the electromagnetic heating furnace core in the cooker body, a circle of electromagnetic heating area is formed at the arc transition part of the cooker body, and the arc transition part of the cooker body is heated in a surrounding manner, so that water and food materials in the cooker body are uniformly heated, meanwhile, the heating effect is ensured, the high thermal efficiency is kept, and the heating cooking work including soup cooking is completed.
Drawings
FIG. 1 is a front sectional view of an electromagnetic heating core of an electric cooker in a preferred embodiment of the present invention;
FIG. 2 is a diagram illustrating the exploded view of the core of the electromagnetic heating device of the electric cooker in the preferred embodiment of the present invention;
FIG. 3 is a schematic view of an assembly structure of an electromagnetic heating furnace core of an electric cooker in a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a coil support of an electromagnetic heating core of an electric cooker in accordance with a preferred embodiment of the present invention;
FIG. 5 is a schematic diagram of a control method of an electromagnetic heating core of an electric cooker according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides an electromagnetic heating electric cooker which comprises a cooker body, a cooker cover arranged on the cooker body and a cooker body 1 arranged in the cooker body, wherein an arc transition part 11 is arranged at one end, connected with the bottom wall of the cooker body 1, of the side wall of the cooker body 1; the electromagnetic heating electric cooker also comprises an electromagnetic heating furnace core which is arranged in the cooker body and is used for the electric cooker provided by the embodiment of the invention. The electromagnetic heating electric cooker disclosed by the invention has the advantages that by controlling the work of the electromagnetic heating furnace core in the cooker body, a circle of electromagnetic heating area is formed at the arc transition part 11 of the cooker body 1, so that the water and food materials in the cooker body 1 are uniformly heated, and the heating and cooking work including soup cooking is completed.
Referring to fig. 1, it is a front sectional view of an electromagnetic heating furnace core of an electric cooker according to a preferred embodiment of the present invention.
The electromagnetic heating furnace core of the electric cooker provided by the embodiment of the invention comprises a coil mounting piece (not shown in figure 1), an electromagnetic heating coil 22, a ferrite magnetizer 23 (not shown in figure 1), a furnace core outer shell 24, a furnace core inner shell 25 and an electromagnetic heating power plate 26.
The electromagnetic heating furnace core of the electric cooker provided by the embodiment of the invention comprises a coil mounting piece and an electromagnetic heating coil 22; the electromagnetic heating coil 22 is wound around the coil mounting member to form an electromagnetic coil portion corresponding to the arc transition portion 11 of the pot body 1. The coil mounting member is provided on the core outer case 24, and a specific structure of the coil mounting member and a winding manner of the electromagnetic heating coil 22 will be described in detail below.
The electromagnetic heating furnace core of the electric cooker provided by the embodiment of the invention is characterized in that the electromagnetic heating coil 22 is wound on the coil mounting piece, so that the wound position of the electromagnetic heating coil 22 corresponds to the arc transition part 11 of the cooker body 1; through input high frequency current in the electromagnetic heating coil 22 for produce alternating magnetic field around, above-mentioned alternating magnetic field can make the pot body 1 itself produce the vortex, and the magnetic line of force pierces through the pot body 1 and makes the pot body 1 generate heat, thereby the circular arc transition portion 11 of the pot body 1 forms the round electromagnetic heating region (the region shown by the arrow in figure 1), and is right the circular arc transition portion 11 of the pot body 1 encircles the heating, thereby realizes right the even heating of water and edible material in the pot body 1 guarantees the heating effect simultaneously and keeps high thermal efficiency.
Referring to fig. 2, it is a diagram of the explosion of the core of the electromagnetic heating stove of the electric cooker according to the preferred embodiment of the present invention.
The electromagnetic heating furnace core also comprises a furnace core outer shell 24; the furnace core outer shell 24 is provided with a first accommodating cavity 241 for placing the pot body 1, and one end of the furnace core outer shell 24 is provided with a first opening 242 communicated with the first accommodating cavity 241; a first arc transition part 243 is arranged at one end of the side wall of the furnace core outer shell 24, which is connected with the bottom wall of the furnace core outer shell 24.
The electromagnetic heating furnace core also comprises a furnace core inner shell 25; the core inner shell 25 is arranged in the first accommodating cavity 241 through the first opening 242; the furnace core inner shell 25 is provided with a second accommodating cavity 251 which is used for placing the pot body 1 and is correspondingly matched with the pot body 1, and one end of the furnace core inner shell 25 is provided with a second opening 252 communicated with the second accommodating cavity 251; and a second arc transition part 253 is arranged at one end of the side wall of the furnace core inner shell 25, which is connected with the bottom wall of the furnace core inner shell 25.
Referring to fig. 3, it is a schematic view of an assembly structure of an electromagnetic heating furnace core of an electric cooker according to a preferred embodiment of the present invention.
The electromagnetic heating furnace core of the electric cooker provided by the embodiment adopts a double-layer heat insulation furnace core, and comprises a furnace core outer shell 24 and a furnace core inner shell 25. Wherein, the furnace core inner shell 25 is arranged in the first accommodating cavity 241 of the furnace core outer shell 24 through the first opening 242 of the furnace core outer shell 24; the specific installation and connection mode of the furnace core inner shell 25 and the furnace core outer shell 24 is as follows: referring to fig. 2 again, a plurality of clamping pieces 254 are uniformly distributed on the outer surface of the side wall of the furnace core inner shell 25 close to the second opening 252, and clamping grooves 244 correspondingly matched with the clamping pieces 254 are arranged on the inner surface of the side wall of the furnace core outer shell 24 close to the first opening 242; a plurality of plug connectors 255 which are uniformly distributed are arranged on the outer surface of the bottom wall of the furnace core inner shell 25, and plug-in connection grooves (not shown in fig. 2) which are correspondingly matched with the plug connectors 255 are arranged on the inner surface of the bottom wall of the furnace core outer shell 24. Therefore, when the furnace core inner shell 25 is installed in the first accommodating cavity 241 of the furnace core outer shell 24, the clamping piece 254 at one end (near the top opening) of the furnace core inner shell 25 is clamped and fixed in the clamping groove 244 at one end (near the top opening) of the furnace core outer shell 24, and the plug piece 255 at the other end (bottom wall) of the furnace core inner shell 25 is spliced and fixed in the splicing groove at the other end (bottom wall) of the furnace core outer shell 24.
Then, the pan body 1 can be placed in the second accommodating cavity 251 of the furnace core inner shell 25 through the second opening 252 of the furnace core inner shell 25, and the second accommodating cavity 251 is correspondingly matched with the pan body 1, when the pan body 1 is placed in the second accommodating cavity 251 of the furnace core inner shell 25, the outer surfaces of the side wall and the bottom wall of the pan body 1 are tightly attached to the inner surface of the furnace core inner shell 25; two symmetrical notches 256 are further formed in the side wall, close to the second opening 252, of the furnace core inner shell 25 and are used as pot body buckling positions, so that the pot body 1 attached to the inner surface of the furnace core inner shell 25 can be conveniently taken out of the second accommodating cavity 251 of the furnace core inner shell 25; the pot body 1 is placed in the second of the furnace core inner shell 25 holds the chamber 251, and the furnace core inner shell 25 is again located in the first chamber 241 that holds of the furnace core outer shell 24, and is also equivalent to the pot body 1 is placed in the first chamber 241 that holds of the furnace core outer shell 24, simple structure, convenient assembling.
Referring again to fig. 1, an insulating chamber 27 is formed between the core inner shell 25 and the core outer shell 24; the heat insulation cavity 27 is filled with a heat insulation material, and the heat insulation material includes a polymer heat insulation foam. By adopting the double-layer heat insulation furnace core, heat insulation materials are filled between the inner furnace core shell 25 and the outer furnace core shell 24, so that the temperature conduction and the insulation between the pot body 1 and the outside can be realized, and a good heat insulation effect is realized; in addition, the outside of the pot body 1 is made of magnetic conductive stainless steel materials which can generate heat in an alternating magnetic field, and the inside is made of aluminum materials which have high heat conductivity coefficient and can quickly and uniformly transfer the heat generated by the stainless steel to the inside of the pot body. The furnace core outer shell 24 and the furnace core inner shell 25 are made of PPS plastic and glass fiber, so that the furnace core outer shell and the furnace core inner shell are resistant to high temperature and acid and alkali, and cannot influence a magnetic field generated when the electromagnetic heating coil 22 works; therefore, the furnace core outer shell 24 and the furnace core inner shell 25 can separate temperature conduction, and the pot body is insulated, and meanwhile, the electromagnetic induction heating of the pot body 1 by the electromagnetic heating coil 22 wound outside the furnace core outer shell 24 is not influenced, so that the heating efficiency of the electromagnetic heating furnace core can be effectively improved.
Specifically, the coil mounting member is disposed on the furnace core outer casing 24, and the electromagnetic coil portion formed by winding the electromagnetic heating coil 22 on the coil mounting member corresponds to the first arc transition portion 243 of the furnace core outer casing 24; the first arc transition portion 243 of the core outer shell 24 corresponds to the second arc transition portion 253 of the core inner shell 25 and the arc transition portion 11 of the pot body 1 in position, and accordingly, the electromagnetic heating coil 22 wound on the coil mounting member, that is, the electromagnetic coil portion, also corresponds to the second arc transition portion 253 of the core inner shell 25 and the arc transition portion 11 of the pot body 1; after the electromagnetic heating coil 22 is electrified and works, an electromagnetic heating area is formed at the arc transition part 11 of the pot body 1; preferably, the perpendicular distance between the second circular arc transition 253 of the core inner shell 25 and the first circular arc transition 243 of the core outer shell 24 is less than 20 mm, and should be as small as possible to reach high frequency of electromagnetic heating conversion.
It can be understood that, in the electromagnetic heating furnace core of the electric cooker provided in this embodiment, the double-layer heat-insulating furnace core with the above structure is only used as a preferred embodiment of the present invention, and in other embodiments, the double-layer heat-insulating furnace core may also have other structures, or the double-layer heat-insulating furnace core may not be used; for example, in another embodiment of the present invention, the electromagnetic heating furnace core only comprises the furnace core outer shell 24, the furnace core outer shell 24 is provided with a first accommodating cavity 251 for placing the pan body 1 and correspondingly matching with the pan body 1, the coil mounting piece is still provided on the furnace core outer shell 24, and the electromagnetic coil part corresponds to the first arc transition part 243; alternatively, in another embodiment of the present invention, the electromagnetic heating furnace core only includes the furnace core outer shell 24, the furnace core outer shell 24 is provided with a cavity for placing the pot body 1, the cavity does not need to completely accommodate the pot body 1, the inner surface of the furnace core outer shell 24 does not need to be tightly attached to the outer surface of the pot body 1, that is, the furnace core outer shell 24 may be in other shapes such as a bowl, the coil mounting piece is still provided on the furnace core outer shell 24, and the electromagnetic coil part corresponds to the first arc transition part 243. Thus, the coil mounting member is provided on the core outer shell 24, and the electromagnetic heating coil 22 is wound around the coil mounting member and corresponds to the first arc transition portion 243 of the core outer shell 24; and then the pot body 1 of the electric cooker is placed in the cavity of the furnace core outer shell 24, the first circular arc transition part 243 corresponds to the circular arc transition part 11 of the pot body 1, so that the electromagnetic heating coil 22 wound on the coil mounting part corresponds to the circular arc transition part 11 of the pot body 1 to form an electromagnetic heating area, and the electric cooker is simple in structure and convenient to assemble. Therefore, it is understood that the above-mentioned structure of the outer furnace core shell 24 and the inner furnace core shell 25 is only a preferred embodiment of the present invention, and in other embodiments, the outer furnace core shell 24 and the inner furnace core shell 25 may have other structures.
Referring to fig. 3 and 4, fig. 4 is a schematic structural view of a coil support of an electromagnetic heating furnace core of an electric cooker according to a preferred embodiment of the present invention.
The coil mounting member includes a plurality of coil brackets 211; the side wall of the furnace core outer shell 24 is also provided with a cartridge 246 correspondingly matched with the coil bracket 211, and the coil bracket 211 is uniformly distributed on the side wall of the furnace core outer shell 24 through matching with the cartridge 246; the bending angle of the coil support 211 is correspondingly matched with the radian of the first arc transition part 243; the coil support 211 is provided with a plurality of bosses 2111, a winding slot 2112 is formed between adjacent bosses 2111, and the electromagnetic heating coil 22 is wound on the coil mounting member by being limited in the winding slot 2112.
The coil mounting pieces are mounted on the side wall of the furnace core outer shell 24; the coil mounting part adopts a split coil fixing structure, is split into a plurality of coil brackets 211, and is matched with a plug-in part 246 arranged on the side wall of the furnace core outer shell 24 to mount the coil brackets 211 on the furnace core outer shell 24, so that the coil brackets 211 surround the outer surface of the side wall of the furnace core outer shell 24; a boss 2111 arranged on the coil bracket 211 forms a winding slot 2112, the electromagnetic heating coil 22 is wound and limited in the winding slot 2112 along the side wall of the furnace core outer shell 24, and finally the electromagnetic heating coil 22 correspondingly surrounds a first arc transition part 243 of the furnace core outer shell 24; the bending angle of the coil support 211 is correspondingly matched with the radian of the first arc transition portion 243, so that the electromagnetic heating coil 22 wound on the coil support 211 can be more attached to the first arc transition portion 243.
In the prior art, annular winding grooves or winding bosses (convex ribs) are often arranged on the outer surface or the inner surface of the integrally formed furnace core outer shell 24, the furnace core outer shell 24 is equivalent to a wire coil support in the prior art, the embodiment of the invention adopts a split coil fixing structure, only an additional coil support 211 needs to be produced independently and is installed on the side wall of the furnace core outer shell 24 in an inserting manner, the winding grooves or the winding bosses (convex ribs) do not need to be arranged on the furnace core outer shell 24, the die sinking and the production processing difficulty of the furnace core outer shell 24 are reduced, the coil support 211 is convenient and quick to install, the production and manufacturing technical requirements of independent processing are lower, and materials are saved.
It will be appreciated that the coil mount configuration described above is merely a preferred embodiment of the invention, and that in other embodiments, the coil mount may take other configurations.
Specifically, the cartridge 246 is a cylindrical structure and is disposed on the outer surface of the sidewall of the outer shell 24; one end of the cartridge 246 is connected to the first opening 242, and the other end of the cartridge 246 is provided with a cartridge slot (not shown in fig. 3); one end of the coil support 211 is provided with an insertion portion 2113 correspondingly matched with the insertion groove, one end of the coil support 211 is connected with the other end of the insertion piece 246 through the matching of the insertion portion 2113 and the insertion groove, and the other end of the coil support 211 is connected with the bottom wall of the furnace core outer shell 24 through a connecting piece 247. The connecting piece 247 is a screw, and the other end of the coil support 211 is connected with the bottom wall of the furnace core outer shell 24 in a specific manner: the other end of the coil support 211 is also provided with a through hole, a plurality of mounting holes are arranged on the bottom wall of the furnace core outer shell 24, the mounting holes are internally provided with threads matched with the screws, and the screws penetrate through the through hole at the other end of the coil support 211 from bottom to top and are fixed in the internal thread mounting holes of the bottom wall of the furnace core outer shell 24.
The insert 246 is a cylindrical structure uniformly distributed on the upper half part of the sidewall of the furnace core outer shell 24, and has one end connected to the first opening 242, the other end connected to one end of the coil support 211 by inserting the insert portion 2113 of the coil support 211 into the insert slot, and the other end of the coil support 211 connected to the bottom wall of the furnace core outer shell 24 through the connecting piece 247; on the one hand, the coil support 211 is mounted on the side wall of the outer furnace shell 24 through the insert 246 and the connecting piece 247, and the mounting is convenient and fast, and on the other hand, the connected insert 246 and the coil support 211 together form a reinforcing structure (equivalent to a reinforcing column) uniformly distributed on the side wall of the outer furnace shell 24, so that the strength and rigidity of the outer furnace shell 24 are increased, and the outer furnace shell 24 is prevented from being deformed. Correspondingly, the surface of the inner shell 25 of the furnace core is also provided with a reinforcing structure, and the side wall of the inner shell 25 of the furnace core is provided with reinforcing ribs 257 which are uniformly distributed and are also used for increasing the strength and rigidity of the inner shell 25 of the furnace core.
It will be appreciated that the construction of the cartridge 246 described above is merely a preferred embodiment of the present invention, and in other embodiments, the cartridge 246 may take on other configurations.
The electromagnetic heating furnace core also comprises a ferrite magnetizer 23; still be equipped with a plurality of buckle spare 2114 on the coil support 211, ferrite magnetizer 23 through with buckle spare 2114's cooperation joint is in on the coil support 211, just ferrite magnetizer 23 covers spacing in wire winding groove 2112 electromagnetic heating coil 22. Specifically, the ferrite magnetizer 23 is in a straight bar shape or an L shape; the buckling part 2114 is an inverted buckling part, one end of the buckling part 2114 is connected with the coil bracket 211, and the other end, far away from the coil bracket 211, of the buckling part 2114 is provided with a clamping joint; after the ferrite magnetizer 23 is clamped into the coil bracket 211, one surface of the ferrite magnetizer 23 is in abutting fit with one end of the boss 2111 far away from the coil bracket 211, and the other surface of the ferrite magnetizer 23 is in clamping fit with the clamping head of the clamping part 2114; the coil support 211 is close to the other end of connecting the diapire of wick shell body 24 still is equipped with U-shaped boss 2115, the bottom of ferrite magnetizer 23 with U-shaped boss 2115 butt.
In order to increase the heating value of the pot body 1, the magnetic field intensity generated by the electromagnetic heating coil 22 needs to be enhanced, and the magnetic field of the electromagnetic heating coil 22 in operation can be enhanced by utilizing the magnetic permeability of the ferrite magnetizer 23, so that magnetic lines of force are gathered, and the magnetic field intensity at the position of the arc transition part 11 of the pot body 1 is increased; and ferrite magnetizer 23 adopts the mode of embedding, through buckle 2114 direct joint is fixed on coil bracket 211, simple structure, magnetizer installation convenient and fast get up does not hinder simultaneously electromagnetic heating coil 22's wire winding structure.
In the prior art, the magnetic flux sensor is usually fixed by adopting viscose, a pressure plate and the like, and because the magnetic conductor and the electromagnetic heating coil cannot be positioned in operation, the assembly error is large; the embodiment of the invention adopts the mode of embedding the ferrite magnetizer 23, so that the assembly is quick and effective, and the assembly efficiency and the assembly precision are improved; in addition, the prior art discloses a scheme of fixing the magnetizer by adopting a magnetizer mounting frame, but because the magnetizer mounting frame and the wire coil bracket are separately designed and manufactured, the magnetizer mounting frame and the wire coil bracket can not necessarily obtain ideal matching degree after being assembled, and the improper assembly and the generation of assembly gaps can occur, thereby reducing the magnetic conductivity; by adopting the embodiment of the invention, the buckling part 2114 is directly arranged on the coil bracket 211 of the sub-part, so that an additional magnetizer mounting rack is not needed, and the material cost is reduced; simultaneously ferrite magnetizer 23 card is gone into behind the coil support 211, ferrite magnetizer 23's one side is pressed and is pasted boss 2111's top makes ferrite magnetizer 23 can press close to more spacing in wire winding groove 2112 electromagnetic heating coil 22 is and cover it, thus performance that can be better the magnetism collection effect of ferrite magnetizer 23 promotes electromagnetic heating efficiency.
It is understood that the above-mentioned mounting structure of the ferrite magnetic conductor 23 is only a preferred embodiment of the present invention, and in other embodiments, other mounting structures of the ferrite magnetic conductor 23 may be adopted.
Referring again to fig. 1, the electromagnetic heating furnace core further includes an electromagnetic heating power plate 26; the electromagnetic heating coil 22 is electrically connected to the electromagnetic heating power plate 26.
Referring to fig. 5, it is a schematic diagram of a control method of an electromagnetic heating furnace core of an electric cooker according to a preferred embodiment of the present invention.
The electromagnetic heating furnace core of the electric cooker provided by the embodiment adopts a Pulse Width Modulation (PWM) or closed-loop control (PID) method to carry out heating control; for example, a user can select different working modes or heating gears (for example, working modes (i), working modes (ii), working modes (iii), working modes (iv), and working modes (iv)) by using a human-computer interaction system of the electric cooker, and the control system of the electric cooker controls the power of the electromagnetic heating power plate 26 of the electromagnetic heating furnace core according to the working modes or the heating gears selected by the user, so as to change the magnitude of the output current of the electromagnetic power plate 26, that is, the magnitude of the energizing current of the electromagnetic heating coil 22; the electric cooker is also provided with a temperature sensor at the bottom of the cooker body 1, the temperature sensor is used for detecting the temperature of the wall of the cooker body, and the control system of the electric cooker can also adjust the power of the electromagnetic heating power plate 26 again according to the temperature detected by the temperature sensor, so that closed-loop control is formed; for example, when the temperature of the pot body is higher than a preset threshold value, the control system starts a protection mode, and stops supplying current to the electromagnetic heating coil 22, that is, controls the electromagnetic heating core to stop heating; therefore, the electromagnetic heating furnace core can be controlled to work independently and flexibly, and the heating effect of the electric cooker in different cooking works or different cooking stages can be ensured.
In summary, in the electromagnetic heating core of the electric cooker provided by the embodiment of the present invention, the electromagnetic heating coil 22 wound on the coil mounting member forms an arc-shaped heating area corresponding to the arc transition portion 11 of the pot body 1, so as to uniformly heat the pot body; meanwhile, through the double-layer heat insulation structure of the furnace core outer shell 24 and the furnace core inner shell 25, on the premise that the electromagnetic heating coil 22 does not influence the heating of the pot body 1, the pot body is subjected to heat insulation, so that the high heat efficiency of the electromagnetic heating furnace core is ensured; and the operation of the electromagnetic heating coil 22 is autonomously and flexibly controlled by the electromagnetic heating power board 26.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. An electromagnetic heating furnace core of an electric cooker, the electric cooker comprises a cooker body, wherein an arc transition part is arranged at one end of the side wall of the cooker body, which is connected with the bottom wall of the cooker body;
the electromagnetic heating furnace core is characterized by comprising a furnace core outer shell, a coil mounting piece and an electromagnetic heating coil; the furnace core outer shell is provided with a first accommodating cavity for accommodating the pot body; one end of the furnace core outer shell is provided with a first opening communicated with the first accommodating cavity; the coil mounting piece is arranged on the side wall of the furnace core outer shell; the electromagnetic heating coil is wound on the coil mounting part to form an electromagnetic coil part; the electromagnetic coil part corresponds to the arc transition part of the pot body;
the coil mounting piece comprises a plurality of coil brackets, the coil brackets are provided with winding grooves, and the electromagnetic heating coil is wound on the coil mounting piece through being limited in the winding grooves;
the electromagnetic heating furnace core of the electric cooker also comprises a ferrite magnetizer; the coil bracket is also provided with a plurality of buckling pieces, the ferrite magnetizer is clamped on the coil bracket through the matching of the ferrite magnetizer and the buckling pieces, and the ferrite magnetizer covers the electromagnetic heating coil limited in the winding groove;
the side wall of the furnace core outer shell is also provided with a plug-in component correspondingly matched with the coil support, and the coil support is distributed on the side wall of the furnace core outer shell through the matching of the plug-in component and the coil support; one end of the plug-in component is connected with the first opening, and the other end of the plug-in component is provided with a plug-in groove; one end of the coil support is provided with an insertion part correspondingly matched with the insertion groove, one end of the coil support is connected with the other end of the insertion piece through the matching of the insertion part and the insertion groove, and the other end of the coil support is connected with the bottom wall of the furnace core outer shell through a connecting piece.
2. The electromagnetic heating core of an electric cooker as set forth in claim 1, wherein said coil supports are uniformly distributed on the side walls of the outer shell of said core by engagement with said cartridge;
a first arc transition part is arranged at one end of the side wall of the furnace core outer shell, which is connected with the bottom wall of the furnace core outer shell; the bending angle of the coil support is correspondingly matched with the radian of the first arc transition part; the electromagnetic coil part corresponds to the first arc transition part;
the coil support is provided with a plurality of bosses, and the winding slots are formed between adjacent bosses.
3. The electromagnetic heating core of an electric cooker as set forth in claim 2, wherein said cartridge is of a cylindrical configuration.
4. The electromagnetic heating core of an electric cooker as claimed in claim 2, wherein said ferrite magnetic conductor is in the shape of a bar or an L.
5. The electromagnetic heating core of an electric cooker as claimed in claim 1, further comprising an inner shell of the core; the furnace core inner shell is arranged in the first accommodating cavity through the first opening; the furnace core inner shell is provided with a second accommodating cavity which is used for placing the pot body and is correspondingly matched with the pot body, and one end of the furnace core inner shell is provided with a second opening communicated with the second accommodating cavity;
a heat insulation cavity is formed between the furnace core inner shell and the furnace core outer shell; the heat insulation cavity is filled with heat insulation materials, and the heat insulation materials comprise high-molecular heat insulation foaming bodies.
6. The electromagnetic heating furnace core of the electric cooker as claimed in claim 5, wherein the end of the side wall of the outer shell of the furnace core connected with the bottom wall of the outer shell of the furnace core is provided with a first arc transition part; a second arc transition part is arranged at one end of the side wall of the furnace core inner shell connected with the bottom wall of the furnace core inner shell; the electromagnetic coil part corresponds to the first arc transition part and the second arc transition part;
and the vertical distance between the first arc transition part of the furnace core outer shell and the second arc transition part of the furnace core inner shell is less than 20 millimeters.
7. The electromagnetic heating furnace core of the electric cooker as claimed in claim 5, wherein a plurality of clamping members are uniformly distributed on the outer surface of the inner shell of the furnace core close to the side wall of the second opening, and clamping grooves correspondingly matched with the clamping members are arranged on the inner surface of the outer shell of the furnace core close to the side wall of the first opening;
the outer surface of the bottom wall of the inner shell of the furnace core is provided with a plurality of plug connectors which are uniformly distributed, and the inner surface of the bottom wall of the outer shell of the furnace core is provided with a plug-in groove which is correspondingly matched with the plug connectors.
8. The electromagnetic heating core of an electric cooker as claimed in claim 5, wherein said outer core shell and said inner core shell are made of PPS plastic plus fiberglass material.
9. The electromagnetic heating core of an electric cooker as claimed in claim 1, further comprising an electromagnetic heating power board; the electromagnetic heating coil is electrically connected with the electromagnetic heating power plate.
10. An electromagnetic heating electric cooker comprises a cooker body, a cooker cover arranged on the cooker body and a cooker body arranged in the cooker body, wherein an arc transition part is arranged at one end of the side wall of the cooker body, which is connected with the bottom wall of the cooker body; the electromagnetic heating electric cooker is characterized by further comprising the electromagnetic heating furnace core which is arranged in the cooker body and is as defined in any one of claims 1 to 9.
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| CN201710884686.9A CN107509264B (en) | 2017-09-26 | 2017-09-26 | Electromagnetic heating furnace core of electric cooker and electromagnetic heating electric cooker |
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| CN201710884686.9A CN107509264B (en) | 2017-09-26 | 2017-09-26 | Electromagnetic heating furnace core of electric cooker and electromagnetic heating electric cooker |
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| CN107509264A (en) | 2017-12-22 |
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