WO2020119040A1 - Cocotte et ustensile de cuisine à induction électromagnétique - Google Patents

Cocotte et ustensile de cuisine à induction électromagnétique Download PDF

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Publication number
WO2020119040A1
WO2020119040A1 PCT/CN2019/089547 CN2019089547W WO2020119040A1 WO 2020119040 A1 WO2020119040 A1 WO 2020119040A1 CN 2019089547 W CN2019089547 W CN 2019089547W WO 2020119040 A1 WO2020119040 A1 WO 2020119040A1
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WO
WIPO (PCT)
Prior art keywords
pot
pot body
electromagnetic induction
control panel
overflow
Prior art date
Application number
PCT/CN2019/089547
Other languages
English (en)
Inventor
Fei Wang
Linbo LIAO
Zhenwei JIN
Original Assignee
Zhejiang Shaoxing Supor Domestic Electrical Appliance Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Shaoxing Supor Domestic Electrical Appliance Co., Ltd. filed Critical Zhejiang Shaoxing Supor Domestic Electrical Appliance Co., Ltd.
Priority to EP19897349.7A priority Critical patent/EP3893699A4/fr
Publication of WO2020119040A1 publication Critical patent/WO2020119040A1/fr

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Classifications

    • 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
    • A47J27/56—Preventing boiling over, e.g. of milk
    • A47J27/62—Preventing boiling over, e.g. of milk by devices for automatically controlling the heat supply by switching off heaters or for automatically lifting the cooking-vessels
    • 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
    • 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
    • A47J27/56—Preventing boiling over, e.g. of milk
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/081—Arrangement or mounting of control or safety devices on stoves
    • 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
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/06—Cook-top or cookware capable of communicating with each other
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to the field of home appliance, and in particular, a pot and electromagnetic induction cookware.
  • Electromagnetic induction cookwares have become a widely used type of cooking device. It is an electrical cooking device that uses electromagnetic induction for heating, and is particularly comprised of a high-frequency induction coil (i.e., excitation coil) , a controller, and a cookware with a bottom made of a ferromagnetic material.
  • a high-frequency induction coil i.e., excitation coil
  • a controller i.e., a controller
  • a cookware with a bottom made of a ferromagnetic material When in use, an alternating current is introduced into the coil. An alternating magnetic field is then generated around the coil. Its magnetic lines of force pass through a metallic pot body 20, generating a great amount of eddy current in the bottom of the pot, thus producing the heat required for cooking.
  • the temperature in the pot needs to be detected.
  • a Negative Temperature Coefficient (NTC) thermistor assembly for precise temperature control is mounted on a pot cover.
  • Food when being cooked, will produce vapor and raise the temperature of the air inside a pot.
  • the NTC assembly detects the variation in the temperature of the air inside the pot or the vapor.
  • the NTC assembly also serves as an electrode for overflow detection, another electrode being connected with a body of the pot by a metallic edge of a pot cover.
  • liquid such as soup overflows
  • water bubbles will be produced.
  • water bubbles enter into contact with the NTC assembly it will result in a current change, which is fed back to an electrical circuit on the pot cover.
  • a wireless transmitter inside a handle of the pot cover transmits a temperature variation signal and an overflow signal to an electrical circuit inside a cavity of the electromagnetic induction cookware.
  • a smart chip processes the information, and based on the information, commands different heating modes of the electromagnetic induction cookware, thus achieving precise temperature control and overflow prevention.
  • the objective of the invention is to solve at least one of the problems described in the “Background of the Invention” part.
  • the present invention provides an anti-overflow pot and electromagnetic induction cookware.
  • the pot comprises a pot body and a pot cover, wherein:
  • the pot body is provided with an anti-overflowing probe that is insulated from the pot body and electrically connected with a control panel, the anti-overflowing probe being configured to be in contact with a metallic area provided on the pot cover when the pot cover covers the pot body, the pot body being insulated from the metallic area and electrically connected with the control panel, the pot body being electrically connected with the anti-overflow probe when liquid flowing upward inside the pot body comes into contact with the anti-overflow probe or the metallic area of the pot cover, so that the control panel controls the heating status of an electromagnetic induction stove based on a signal of electrical connection.
  • the anti-overflow probe is provided on the pot body rather than on the pot cover like in the prior art and is configured to be in contact with the metallic area provided on the pot cover, when liquid flowing upward inside the pot body comes into contact with the anti-overflow probe or the metallic area of the pot cover, the pot body is electrically connected with the anti-overflow probe, so that the control panel controls the heating status of an electromagnetic induction stove based on a signal of electrical connection.
  • the control panel can still control the heating status of the electromagnetic induction stove based on the signal of electrical connection to prevent an overflow.
  • the metallic area comprises a metallic outer edge, preferably ring-shaped, and a metallic inner edge, preferably plate-shaped or ring-shaped, which are located outside and inside the pot body respectively when the pot cover covers the pot body.
  • one end of the anti-overflow probe extends outside from the pot body, preferably by 1 to 10 mm, and enters into contact with the metallic outer edge when the pot cover covers the pot body, the pot body and the anti-overflow probe being electrically connected when liquid flowing upward inside the pot body comes into contact with the metallic inner edge.
  • one end of the anti-overflow probe extends inside the pot body, preferably by 1 to 10 mm, and enters in contact with the metallic inner edge when the pot cover covers the pot body, the pot body and the anti-overflow probe being electrically connected when liquid flowing upward inside the pot body comes into contact with the metallic inner edge or the anti-overflow probe.
  • an end of the metallic inner edge located inside the pot body is preferably 5 to 50 mm lower than an outer edge of a pot opening of the pot body.
  • an insulation element is provided between the pot cover and the pot body for insulating the metallic area from the pot body when the pot cover covers the pot body.
  • the pot further comprises: a temperature measuring assembly provided on an outer side wall of the pot body, electrically connected with the control panel and configured to detect a temperature of the pot.
  • the outer side wall of the pot body is provided with an assembly box covering the temperature measuring assembly, one end of the anti-overflow probe being located inside the assembly box, the other end being in contact with the metallic area of the pot cover when the pot cover covers the pot body.
  • the assembly box comprises a bottom cover, a mounting base and a top cover, wherein the bottom cover and the mounting base are fixed onto the outer side wall of the pot body, the top cover covers the mounting base, the anti-overflow probe is extendably provided on the bottom cover, and the temperature measuring assembly is located between the bottom cover and the outer side wall of the pot body.
  • a sealing element is provided between the bottom cover and the mounting base for a sealing between the bottom cover and the mounting base.
  • a pressing block is provided between the bottom cover and the temperature measuring assembly, by which the temperature measuring assembly is pressed tightly against the outer side wall of the pot body.
  • the assembly box is provided at its bottom with an extendable connecting electrode connected to the anti-overflow probe and the temperature measuring assembly, the connecting electrode being configured to electrically connect the anti-overflow probe, the temperature measuring assembly and the pot body with the control panel provided inside the electromagnetic induction stove.
  • the assembly box is at a number of two, and the two assembly boxes are symmetrically provided on the outer side wall of the pot body, wherein the connecting electrode, the anti-overflowing probe and the temperature measuring assembly are provided inside one or both of the assembly boxes.
  • the pot further comprises: an anti-overflow wire, wherein one end of the anti-overflow wire is connected directly with the pot body or via a metallic shell of the temperature measuring assembly, and the other end is connected with the connecting electrode.
  • the connecting electrode is at a number of three, wherein the anti-overflow probe is connected with one of the connecting electrodes, two electrodes of the temperature measuring assembly are connected with the remaining two connecting electrodes, and one end of the anti-overflow wire is connected with one of the connecting electrodes that are connected with the temperature measuring assembly.
  • a wireless transmitting module is provided inside the assembly box for sending a signal of connection indicating an electrical connection between the anti-overflow probe and the pot body and a signal of temperature detected by the temperature measuring assembly to the electromagnetic induction stove, so that the electromagnetic induction stove controls its heating status based on the signal of connection and the signal of temperature.
  • the invention further relates to an electromagnetic induction cookware comprising an electromagnetic induction stove and a pot as described above.
  • a sensing electrode corresponding to the connecting electrode on the pot is provided on the electromagnetic induction stove, the anti-overflow probe and the temperature measuring assembly on the pot being electrically connected with the electromagnetic induction stove through a contact between the sensing electrode and the connecting electrode.
  • an adapter part that cooperates with the assembly box on the pot is provided on the electromagnetic induction stove, so as to position the pot on the electromagnetic induction stove, the sensing electrode being provided on the adapter part.
  • the electromagnetic induction cookware further comprises:
  • control panel provided inside the electromagnetic induction stove, the anti-overflow probe, the temperature measuring assembly and the pot body being electrically connected with the control panel through a contact between the connecting electrode and the sensing electrode.
  • the electromagnetic induction cookware further comprises:
  • first control panel is provided inside the assembly box on the pot and connected with the connecting electrode, the anti-overflow probe, the temperature measuring assembly and the pot body being all electrically connected with the first control panel
  • second control panel is provided inside the electromagnetic induction stove and connected with the sensing electrode, the first control panel and the second control panel being electrically connected through a contact between the connecting electrode and the sensing electrode, or the first control panel and the second control panel transmitting signals in a wireless manner.
  • Figure 1A is a schematic exploded view of a pot provided by embodiment I of the invention.
  • Figure 1B is a schematic sectional view of a pot cover of the pot provided by embodiment I of the invention.
  • Figure 1C is a schematic view of a pot body of the pot provided by embodiment I of the invention.
  • Figure 2 is a schematic sectional view of a pot body of a pot provided by embodiment II of the invention.
  • Figure 3A is a schematic exploded view of an electromagnetic induction cookware according to an embodiment of the invention.
  • Figure 3B is a schematic view of an electromagnetic induction stove of the electromagnetic induction cookware illustrated in Figure 3A.
  • Embodiment I is a diagrammatic representation of Embodiment I:
  • the pot 100 comprises a pot body 20 and a pot cover 10, and the pot body 20 is provided with an anti-overflow probe 23 that is insulated from the pot body 20 and electrically connected with a control panel (not shown) .
  • the anti-overflow probe 23 is in contact with a metallic area 11 provided on the pot cover 10. That is to say, the pot cover 10 is provided with a metallic area 11, and when the pot cover 10 covers the pot body 20, the anti-overflow probe 23 is in contact with the metal. At this moment, the electrical connection between the anti-overflow probe 23 and the metallic area 11 is achieved.
  • the pot body 20 is used as the other electrode.
  • the pot body 20 is specifically an electric conductive metallic pot body 20, and when the pot cover 10 is covers the pot body 20, the pot body 20 is insulated from the metallic area 11 of the pot cover 10 and electrically connected with the control panel.
  • the control panel determines that the pot body 20 and the anti-overflow probe 23 are connected based on a signal of electrical connection (e.g., a variation in current or voltage) and that the liquid has come into contact with the anti-overflow probe 23 or the metallic area 11 of the pot cover 10.
  • the control panel controls the heating status of an electromagnetic induction stove 30 (see Figure 3A) .
  • the heating status can for example be a status of suspending heating or reducing the heating power etc., so as to reduce the temperature inside the pot 100 and preventing liquid flowing out from inside the pot body 20.
  • the control panel will control the electromagnetic induction stove 30 based on a signal indicating the electrical connection between the anti-overflow probe 23 and the pot body 20, thus fulfilling a relative good function of preventing overflow.
  • liquid inside the pot body 20 is not susceptible of flowing out.
  • the anti-overflow probe 23 is provided on the pot body 20, even if the pot cover 10 is removed, when liquid comes into contact with the anti-overflow probe 23, the anti-overflow probe 23 and the pot body 20 are electrically connected, and the control panel can still control the heating status of the electromagnetic induction stove 30 based on a signal of electrical connection.
  • the pot 100 can still fulfil the function of preventing overflow, solving thus the problem that liquid cannot be prevented from overflowing when the pot cover 10 is removed. Therefore, the pot 100 provided by the present embodiment achieves the objective of still being able to prevent overflow when the pot cover 10 is removed.
  • the pot body 20 since there is provided on the pot body 20 an anti-overflow probe 23 that is insulated from the pot body 20, electrically connected with the control panel and in contact with the metallic area 11 provided on the pot cover 10, the pot body 20 being insulated from the metallic area 11 and electrically connected with the control panel, when liquid flowing upward inside the pot body 20 comes into contact with the anti-overflow probe 23 or the metallic area 11 of the pot cover 10, the pot body 20 are electrically connected with the anti-overflow probe 23, so that the control panel controls the heating status of an electromagnetic induction stove 30 based on a signal of electrical connection.
  • the pot 100 provided by this embodiment solves the problem in existing electromagnetic induction cookwares 200: as the NTC assembly and the anti-overflow electrode are provided on a pot cover 10, once the pot cover 10 is removed, overflow prevention becomes impossible.
  • the anti-overflow probe 23 when the anti-overflow probe 23 and the metallic area 11 of the pot cover 10 are in contact, the anti-overflow probe 23 can be located outside the pot body 20 and enter into contact with the metallic area 11 of the pot body 20, or the anti-overflow probe 23 can extend inside the pot body 20 to be in contact with the metallic area 11 of the pot cover 10.
  • the metallic area 11 of the pot cover 10 is divided into a metallic outer edge 111 and a metallic inner edge 112.
  • the pot cover 10 covers the pot body 20
  • a pot outer edge of the pot body 20 abuts against the metallic outer edge 111.
  • the pot body 20 is insulated from both the metallic outer edge 111 and the metallic inner edge 112.
  • the metallic outer edge 111 and the metallic inner edge 112 are metallic edges that are connected with each other. In other words, the metallic inner edge 112 and the metallic outer edge 111 are not disconnected.
  • the metallic outer edge 111 is located outside the pot body 20, and the metallic inner edge 112 is located inside the pot body 20.
  • One end of the anti-overflow probe 23 extends from the pot body 20 towards the pot cover 10 and is in contact with the metallic outer edge 111. That is to say, the anti-overflow probe 23 is located outside the pot body 20, and when the pot cover 10 covers the pot body 20, the anti-overflow probe 23 is in contact with the metallic outer edge 111 of the pot cover 10.
  • the control panel controls the heating status of the electromagnetic induction stove 30 based on a signal indicating the electrical connection between the anti-overflow probe 23 and the pot body 20.
  • the length of the outside extension of the anti-overflow probe 23 can be between 1 and 10mm.
  • the length of the outside extension of the anti-overflow probe 23 can be 1mm or 5mm.
  • the anti-overflow probe 23 cannot be electrically connected via the metallic area 11 of the pot cover 10.
  • the anti-overflow probe 23 can still fulfill the function of being electrically connected with the pot body 20 and triggering overflow prevention. Therefore, in the present embodiment, even if the pot cover 10 is removed, the function of preventing overflow can still be fulfilled.
  • the anti-overflow probe 23 when the anti-overflow probe 23 is provided outside the pot body 20 and in contact with the metallic outer edge 111, so long as liquid inside the pot body 20 comes into contact with the metallic inner edge 112, the function of preventing overflow can be fulfilled, thus avoiding the contact between the anti-overflow probe 23 and the liquid. Therefore, in the present embodiment, when the anti-overflow probe 23 is provided outside the pot body 20 and in contact with the metallic outer edge 111 to fulfill the function of preventing overflow, as the anti-overflow probe 23 is located outside the pot body 20, damage to the anti-overflow probe 23 caused by the high temperature or liquid inside the pot body 20 is avoided so that the life of the anti-overflow probe 23 is prolonged.
  • overflow prevention is achieved by the electrical connection between the anti-overflow probe 23 and the pot body 20 when liquid inside the pot body 20 comes into contact with the metallic inner edge 112.
  • the metallic inner edge 112 extends inside the pot body 20. But when the portion of the metallic inner edge 112 extending inside the pot body 20 is excessive, liquid inside the pot body 20 easily comes into contact with the metallic inner edge 112, leading to wrong determination.
  • the portion of the metallic inner edge 112 extending inside the pot body 20 is not enough, liquid is prone to not come into contact with the metallic inner edge 112 until it has already flown out of the pot body 20, thus causing a delay in the function of overflow prevention of the pot 100.
  • the end of the metallic inner edge 112 located inside the pot body 20 is lower than the pot opening outer edge of the pot body 20, the distance between the end of the metallic inner edge 112 located inside the pot body 20 and the pot opening is between 5-50mm, and the height of the metallic inner edge 112 on the pot cover 10 is between 5-50mm.
  • the height of the metallic inner edge 112 of the pot cover 10 can be 30mm or 40mm. That is to say, when the pot cover 10 covers the pot body 20, the height of the extension inside the pot body 20 of the metallic inner edge 112 on the pot cover 10 is 30mm or 40mm.
  • the anti-overflow probe 23 is electrically connected with the pot body 20, triggering the function of overflow prevention by adjusting the heating status of the electromagnetic induction stove 30 to reduce the temperature inside the pot body 20, thus preventing liquid inside the pot body 20 from flowing out.
  • the metallic area 11 can be a surrounding metallic edge attached to the outer periphery of the pot cover 10, and the rest of the pot cover 10 can be of a glass material or ceramic material.
  • the surrounding metallic edge is provided as a ring along the outer periphery of the glass portion.
  • the entire pot cover 10 is made of a metal material.
  • the entire outer surface of the pot cover 10 is the metallic area 11.
  • the metallic outer edge 111 is located outside the pot body 20. That is to say, the metallic outer edge 111 of the pot cover 10 extends outside beyond the pot opening of the pot body 20.
  • the diameter of the outer periphery of the pot cover 10 is larger than that of the pot opening of the pot body 20.
  • the NTC assembly serves as one of the electrodes for overflow prevention
  • the electrode being a point
  • overflow prevention can be fulfilled only if the electrode is contacted.
  • the metallic inner edge 112 is provided as a ring-shaped metallic inner edge that can be provided in one tour surrounding the inner wall of the pot body 20.
  • the function of overflow prevention can be triggered.
  • the overflow prevention is more comprehensive and more efficient. Therefore, in the present embodiment, since the metallic inner edge 112 is provided to be ring-shaped, the extent of the contact between liquid inside the pot body 20 and the metallic inner edge 112 is enlarged, achieving the objective of sensing bubbles on 360 degrees, and making overflow prevention more comprehensive.
  • the metallic outer edge 111 can be a metal plate. That is to say, it suffices that the anti-overflow probe 23 is in contact with the metal plate.
  • the metallic outer edge 111 is also provided as a ring-shaped metallic outer edge 111.
  • the location of the contact between the anti-overflow probe 23 and the metallic outer edge 111 is not limited to a particular location, thus facilitating the contact between the anti-overflow probe 23 and the metallic outer edge 111.
  • an insulation element (not shown) is provided between the pot cover 10 and the pot body 20.
  • the insulation element is used for insulating the metallic area 11 from the pot body 20 when the pot cover 10 covers the pot body 20.
  • the insulation element can be provided on the metallic area 11 of the pot cover 10 and used for insulating it from the pot body 20.
  • the insulation element can be provided in the region of the metallic outer edge 111 corresponding to the pot outer edge of the pot body 20.
  • the insulation element is provided on the pot outer edge of the pot body 20 and used for insulating it from the metallic area 11.
  • the insulation element can be an element made of silica gel, or an insulation layer applied on the metallic outer edge 111 or the pot opening of the pot body 20.
  • the insulation element is an element made of silica gel
  • the silica gel element fulfils a function of preventing noises.
  • the gap produced when the pot opening or the metallic edge of the pot cover deforms being relatively large, the silicia gel element, which is relatively soft, can fill in the gap.
  • the pot further comprises: a temperature measuring assembly 24 provided on an outer side wall of the pot body 20 and electrically connected with the control panel.
  • the temperature measuring assembly 24 is used for detecting the temperature of the pot 100. That is to say, in the present embodiment, the temperature measuring assembly 24 is provided on the pot body 20.
  • the temperature measuring assembly 24 is provided at the bottom of the outer side wall of the pot body 20. As the temperature at the bottom of the pot body 20 is closer to the actual temperature of the pot boy 20, in the present embodiment, by providing the temperature measuring assembly 24 at the bottom of the outer side wall of the pot body 20, precise temperature measurement is achieved.
  • the temperature measuring assembly 24 specifically comprises a metallic shell and a temperature measuring element encapsulated inside the metallic shell.
  • the metallic shell of the temperature measuring assembly 24 is pressed against the outer side wall of the pot body 20.
  • the temperature of the pot body 20 is transferred to the metallic shell of the temperature measuring assembly 24, and the temperature measuring element achieves detection of the temperature of the pot body 20 by detecting the temperature of the metallic shell. Therefore, in the present embodiment, by providing the anti-overflow probe 23 and the temperature measuring assembly 24 on the pot body 20, the objectives of precise temperature measurement and overflow prevention of the pot 100 are achieved, solving the problems in existing electromagnetic induction cookwares 200: as the NTC assembly and the anti-overflow electrode are provided on the pot cover 10, once the pot cover 10 is removed, temperature measurement and overflow prevention become impossible.
  • the outer side wall of the pot body 20 is provided with an assembly box 21 covering the temperature measuring assembly 24. That is to say, the assembly box 21 covers the temperature measuring assembly 24, fulfilling a function of covering and protecting the temperature measuring assembly 24, and preventing the temperature measuring assembly 24 from being exposed outside the pot body 20.
  • one end of the anti-overflow probe 23 is located inside the assembly box 21, and the other end of the anti-overflow probe 23 extends from the top of the assembly box 21 to be contact with the metallic outer edge 111.
  • the other end of the anti-overflow probe 23 extends inside the pot body 20. Please refer to embodiment II described below for details of the case in which the other end of the anti-overflow probe 23 extends inside the pot body 20.
  • one end of the anti-overflow probe 23 is located inside the assembly box, and the other end of the anti-overflow probe 23 extends from the top of the assembly box 21.
  • the anti-overflow probe 23 on the assembly box 21 can lengthen upward and shorten downward. That is to say, the anti-overflow probe 23 possesses elasticity.
  • the anti-overflow probe 23 can possess elasticity itself, for example, be made of an elastic material, or can possess elasticity by means of silica gel or a spring support.
  • the assembly box 21 in addition to fulfilling a function of covering and protecting the temperature measuring assembly 24 and accommodating the anti-overflow probe 23, can also serve as a handle of the pot 100. That is to say, the outer surface of the assembly box 21 can be provided as a handle for a user for transportation. Thus, providing an additional handle of the pot 100 on the pot body 20 is avoided.
  • there can be two assembly boxes 21 which are symmetrically provided on the outer side wall of the pot body 20. Thus, the two assembly boxes 21 are used as a pair of handles of the pot 100.
  • the anti-overflow probe 23 and the temperature measuring assembly 24 can be provided inside one assembly box 21, or can be provided in both assembly boxes 21. In practice, based on the actual application, a corresponding number of anti-overflow probe 23 and temperature measuring assembly 24 are provided.
  • the assembly box 21 comprises a bottom cover 213, a mounting base 212, and a top cover 211.
  • the bottom cover 213 and the mounting base 212 are fixed to the outer side wall of the pot body 20 by fasteners.
  • the top cover 211 covers the mounting base 212.
  • the anti-overflow probe 23 is extendably provided at the top of the bottom cover 213.
  • the temperature measuring assembly 24 is provided between the bottom cover 213 and the outer side wall of the pot body 20. Specifically, the temperature measuring assembly 24 is pressed tightly against the outer side wall of the pot body 20 by the pressing of the bottom cover 213.
  • the outer side wall of the pot body 20 is provided with a plurality of connectors 216.
  • the bottom cover 213 and the mounting base 212 are fixed to the pot body 20 by the fastening connection between fasteners and the connectors 216.
  • the number of the connectors 216 is provided in practice according to actual needs.
  • the connectors 216 can be welded blocks provided with threaded holes, and the fasteners are screws.
  • the bottom cover 213 and the mounting base 212 are fixed to the pot body 20 by the screw connection between the screws and the welded blocks.
  • a sealing element 214 is provided between the bottom cover 213 and the mounting base 212 for the sealing between them.
  • the sealing element 214 is a silica gel element.
  • a pressing block 215 is provided between the bottom cover 213 and the temperature measuring assembly 24.
  • the temperature measuring assembly 24 is pressed tightly against the outer side wall of the pot body 20 by the pressing block 215.
  • the bottom cover 23 presses the pressing block 215 such that the temperature measuring assembly 24 is pressed tightly against the outer side wall of the pot body 20.
  • the pressing block 215 is specifically a silica gel block, which possesses a certain degree of elasticity.
  • an extendable connecting electrode 22 connected with the anti-overflow probe 23 and the temperature measuring assembly 24 is provided at the bottom of the assembly box 21 for electrically connecting the anti-overflow probe 23, the temperature measuring assembly 24, and the pot body 20 with the control panel provided inside the electromagnetic induction stove 30.
  • the anti-overflow probe 23, the temperature measuring assembly 24, and the pot body 20 are electrically connected with the control panel through the contact between the connecting electrode 22 and a sensing electrode 32 on the electromagnetic induction stove 30 (see Figure 3A) .
  • the pot body 20 is provided with the connecting electrode 22
  • the electromagnetic induction stove 30 is provided with the sensing electrode 32
  • the pot body 20 and the electromagnetic induction stove 30 are electrically connected by the connecting electrode 22 and the sensing electrode 32.
  • the anti-overflow probe 23, the temperature measuring assembly 24, and the pot body 20 are electrically connected with the control panel inside the electromagnetic induction stove 30 directly through the connecting electrode 22 and the sensing electrode 32, avoiding the problems of high cost and unstable signals existing in the event that the pot 100 and the electromagnetic induction stove 30 transmit signals in a wireless manner.
  • the connecting electrode 22 in the event that the connecting electrode 22 is provided on the assembly box 21, the connecting electrode 22 is located inside the bottom of the assembly box 21, and one of its ends extends outside from the bottom of the assembly box 21 to be in contact with the sensing electrode 32 of the electromagnetic induction stove 30.
  • the connecting electrode 22 can possess elasticity itself, or can be rendered elastically extendable by silica gel or a spring support.
  • the connecting electrode 22 needs to be also provided on both assembly boxes 21.
  • the pot further comprises: an anti-overflow wire (not shown) . Its two ends are connected respectively with the metallic shell of the temperature measuring assembly 24 and the connecting electrode 22.
  • the pot body 20 is connected with the connecting electrode 22 by the metallic shell and the anti-overflow wire.
  • the two ends of the anti-overflow wire are connected respectively with the pot body 20 and the connecting electrode 22.
  • the anti-overflow probe 23 is connected with one of the connecting electrodes 22.
  • the two electrodes of the temperature measuring assembly 24 are connected respectively with the remaining two connecting electrodes 22.
  • One end of the anti-overflow wire is connected with one of the connecting electrodes 22 that is connected with the temperature measuring assembly 24. That is to say, the anti-overflow wire and one of the electrodes of the temperature measuring assembly 24 share one connecting electrode 22.
  • an adapter part 31 that cooperates with the assembly box 21 is provided on the electromagnetic induction stove 30 (see Figure 3A) .
  • the assembly box 21 on the pot body 20 cooperates with the adapter part 31 on the electromagnetic induction stove 30.
  • the assembly box 21 on the pot body 20 cooperates with the adapter part 31 on the electromagnetic induction stove 30 in an insertion connection manner, thus fulfilling a function of positioning the pot 100, especially when there are two assembly boxes 21. In that case, there are also two adapter parts 31 on the electromagnetic induction stove 30.
  • the pot body 20 and the electromagnetic induction stove 30 are relatively well positioned by means of the two assembly boxes 21 and adapter parts 31, preventing the pot body 20 from rotating on the electromagnetic induction stove 30.
  • the connecting electrodes 22 are provided on the assembly boxes 21, in the event that the sensing electrodes 32 on the electromagnetic induction stove 30 are specifically provided on the adapter parts 31, when the assembly boxes 21 are insertion connected with the adapter parts 31, contact between the connecting electrodes 22 and the sensing electrodes 32 is achieved.
  • the control panel can be provided inside the electromagnetic induction stove 30, and is connected with the sensing electrodes 32.
  • the anti-overflow probe 23 and the temperature measuring assembly 24 are electrically connected with the control panel inside the electromagnetic induction stove 30 through the contact between the connecting electrodes 22 and the sensing electrodes 32.
  • the pot body 20 and the electromagnetic induction stove 30 can both be provided with a control panel.
  • the control panel can comprise a first control panel and a second control panel.
  • the first control panel is provided inside the assembly box 21 and connected with the connecting electrodes 22.
  • the anti-overflow probe 23, the temperature measuring assembly 24, and the pot body 20 are all electrically connected with the first control panel.
  • the anti-overflow probe 23 and the temperature measuring assembly 24 are not directly connected with the connecting electrodes 22, but with the first control panel.
  • the second control panel is provided inside the electromagnetic induction stove 30 and connected with the sensing electrodes 32.
  • the first control panel and the second control panel are electrically connected through the contact between the connecting electrodes 22 and the sensing electrodes 32.
  • signals can be transmitted between the pot body 20 and the electromagnetic induction stove 30 in a wireless manner.
  • a wireless transmission module can be provided inside the assembly box 21 for sending a signal indicating an electrical connection between the anti-overflow probe 23 and the pot body 20 and a signal of temperature detected by the temperature measuring assembly 24 to the electromagnetic induction stove 30, so that the electromagnetic induction stove 30 controls the heating status based on the signal of electrical connection and the signal of temperature.
  • the module in the event that a wireless transmission module is provided, the module can be provided on the first control panel which controls it to send signals to the electromagnetic induction stove 30.
  • Figure 2 is a schematic sectional view of a pot body in a pot provided by embodiment II of the invention.
  • one end of the anti-overflow probe 23 extends inside the pot body 20. Specifically, one end of the anti-overflow probe 23 extends inside the pot body 20 and is in contact with the metallic inner edge 112. Thus, when liquid flowing upward inside the pot body 20 comes into contact with the metallic inner edge 112 or the anti-overflow probe 23, the pot body 20 and the anti-overflow probe 23 are electrically connected. Specifically, one end of the anti-overflow probe 23 extends inside the pot body 20 through the pot body 20 and is in contact with the metallic inner edge 112.
  • the anti-overflow probe 23 when liquid inside the pot body 20 comes into contact with the anti-overflow probe 23, the anti-overflow probe 23, the liquid, and the pot body 20 are electrically connected to form an anti-overflow circuit.
  • the control panel controls the heating status of the electromagnetic induction stove 30 based on a signal of electrical connection.
  • the length of the extension inside the pot body of the anti-overflow probe 23 can be between 1 and 10mm.
  • the length of the extension inside the pot body of the anti-overflow probe 23 can be 2mm or 6mm. That is to say, in the present application, in the event that one end of the anti-overflow probe 23 extends outside the pot body or inside the pot body, the length of the extension of the anti-overflow probe 23 is 1 to 10mm.
  • the anti-overflow probe 23 As one end of the anti-overflow probe 23 is fixed to the pot body 20, and the other end of the anti-overflow probe 23 extends inside the pot body 20 through the pot body 20, in the event that the anti-overflow probe 23 is provided on the pot body 20, when the anti-overflow probe 23 is provided at a relatively low position on the pot body 20 and one end of the anti-overflow probe 23 extends inside the pot body 20, liquid can easily come into contact with the anti-overflow probe 23, causing wrong determination.
  • the anti-overflow probe 23 When the anti-overflow probe 23 is provided at a relatively high position on the pot body 20, liquid is prone to not coming into contact with the anti-overflow probe 23 until it has already flown out of the pot body 20, thus causing a delay in the overflow prevention function of the pot 100.
  • the anti-overflow probe 23 is provided at the upper part of the pot body 20.
  • the vertical distance between the anti-overflow probe 23 and the pot opening can be 5 to 50mm.
  • the vertical distance between the anti-overflow probe 23 and the pot opening can be 25mm or 35mm.
  • the vertical distance between the hole and the pot opening is set to be 5 to 50mm.
  • the metallic area 11 on the pot cover 10 can comprise only the metallic inner edge 112, and the metallic outer edge 111 can cover the outer periphery of the pot opening as a support edge.
  • the metallic outer edge 111 can be metallic or non-metallic.
  • the configurations of the temperature measuring assembly 24, the assembly box 21, and the metallic inner edge 112 are not repeatedly described here. Please refer to the previous embodiment.
  • Figure 3A is a schematic exploded view of an electromagnetic induction cookware according to an embodiment of the invention.
  • Figure 3B is a schematic view of an electromagnetic induction stove of the electromagnetic induction cookware illustrated in Figure 3A.
  • the present embodiment provides an electromagnetic induction cookware 200. As shown in Figures 3A to 3B, it comprises an electromagnetic induction stove 30 and any pot 100 described above. The configuration of the pot 100 and the process of overflow prevention are not repeatedly described here. Please refer to the previous embodiments.
  • the electromagnetic induction stove 30 is provided with a sensing electrode (s) 32 that will be in contact with the connecting electrode (s) 22 on the pot body 20 and electrically connected with a control panel provided inside the electromagnetic induction stove 30.
  • the anti-overflow electrode (s) and the temperature measuring assembly 24 on the pot body 20 are electrically connected with the control panel through the contact between the connecting electrode (s) 22 and the sensing electrode (s) 32.
  • the electromagnetic induction stove 30 is provided with an adapter part 31 that cooperates with the assembly box 21 provided on the pot 100.
  • the positioning of the pot 100 on the electromagnetic induction stove 30 is achieved.
  • the pot 100 is placed on the electromagnetic induction stove 30 for heating, only when the assembly boxes 21 correspond to the adapter parts 31 can the pot 100 be accurately placed on the electromagnetic induction stove 30.
  • Relatively good positioning of the pot body 20 and the electromagnetic induction stove 30 is achieved through the two assembly boxes 21 and adapter parts 31.
  • rotation of the pot body 20 on the electromagnetic induction stove 30 is prevented.
  • the positioning is achieved specifically by the cooperation between the assembly box (es) 21 and the adapter part (s) 31 in an insertion connection manner.
  • the connecting electrode (s) 22 is provided on the assembly box (es) 21, in order to achieve the contact between the connecting electrode (s) 22 and the sensing electrode (s) 32, the sensing electrode (s) 32 is provided on the adapter part (s) 31. Specifically, the sensing electrode (s) 32 is provided on the face of the adapter part (s) 31 facing the assembly box (es) 21.
  • the assembly box (es) 21 and the adapter part (s) 31 cooperate with each other by insertion connection, meanwhile, the connecting electrode (s) 22 and the sensing electrode (s) 32 enter into contact with each other, and the anti-overflow probe 23 and the temperature measuring assembly 24 on the pot 100 transmit signals with the control panel inside the electromagnetic induction stove 30 through the contact between the sensing electrode (s) 32 and the connecting electrode (s) 22.
  • the sensing electrode (s) 32 is a metal plate.
  • the electromagnetic induction stove 30 is a square stove or a circular stove.
  • two adapter parts 31 are symmetrically provided on a side wall of the electromagnetic induction stove 30.
  • the adapter part (s) 31 is specially a plot protruding outward on the side wall of the electromagnetic induction stove 30, and the two ends of the plot extend to a panel and a bottom shell bottom face of the electromagnetic induction stove 30.
  • the electromagnetic induction stove 30 is a circular stove
  • the radian of the outer side face of the adapter part 31 is identical to that of the circular side wall of the electromagnetic induction stove 30.
  • the adapter part (s) 31 in addition to fulfilling a function of positioning with the assembly box (es) 21 of the pot body 20, can also serve as a handle of the electromagnetic induction stove 30.
  • the adapter parts 31 are symmetrically provided on the side wall of the electromagnetic induction stove 30 and serve as two handles for a user to move the electromagnetic induction stove 30.
  • the adapter part (s) 31 in the event that the adapter part (s) 31 is outward extendingly provided on the side wall of the electromagnetic induction stove 30, the surface of contact between the electromagnetic induction stove 30 and the working platform increases, compared with an electromagnetic induction stove 30 without any adapter part 31.
  • the electromagnetic induction stove 30 has a more stable position during cooking, and is not prone to moving.
  • the adapter part (s) 31 is provided on the side wall of the electromagnetic induction stove 30, the surface of the entire outer side wall of the electromagnetic induction stove 30 increases. In this case, an operating area can be provided on the outer side face of the adapter part (s) 31 on which an operating button (s) or display screen can be provided.
  • the adapter part (s) 31 is provided with an operating button or display area, the provision of an operating area on the panel of the electromagnetic induction stove 30 is thus avoided.
  • the fixation between the adapter part (s) 31 and the side wall of the electromagnetic induction stove 30 can be achieved by means of welding, snap-fit connection, or fastening connection by fasteners.
  • the adapter part (s) 31 can specifically be formed integrally with the bottom shell of the electromagnetic induction stove 30.
  • the electromagnetic induction cookware in order to control the heating status of the electromagnetic induction stove, further comprises a control panel, which can be provided inside the electromagnetic induction stove 30, and is connected with the sensing electrode (s) 32.
  • the anti-overflow probe 23 and the temperature measuring assembly 24 are electrically connected with the control panel inside the electromagnetic induction stove 30 through the contact between the connecting electrode (s) 22 and the sensing electrode (s) 32.
  • a control panel can be provided on both the pot body 20 and the electromagnetic induction stove 30.
  • the electromagnetic induction cookware further comprises a first control panel and a second control panel. The first control panel is provided inside the assembly box 21 and connected with the connecting electrode (s) 22.
  • the anti-overflow probe 23, the temperature measuring assembly 24, and the pot body 20 are all electrically connected with the first control panel. That is to say, the anti-overflow probe 23 and the temperature measuring assembly 24 are not directly connected with the connecting electrode (s) 22, but with the first control panel.
  • the second control panel is provided inside the electromagnetic induction stove 30 and connected with the sensing electrode (s) 32.
  • the first control panel and the second control panel are electrically connected through the contact between the connecting electrode (s) 22 and the sensing electrode (s) 32.
  • the first control panel and the second control panel transmit signals in a wireless manner.
  • a wireless transmission module is provided on the first control panel.
  • a wireless receiving module is provided on the second control panel.
  • the pot body 20 and the electromagnetic induction stove 30 transmit signals wirelessly with each other by means of the wireless transmission module and the wireless receiving module.
  • connection with, ” “connected with, ” “fixed, ” “mounted, ” etc. should be understood generally.
  • they can refer to a fixed connection or a connection through an intermediate medium; they can be internal communication or interaction relationship between two elements.
  • connect with, ” “connected with, ” “fixed, ” “mounted, ” etc. should be understood generally.
  • they can refer to a fixed connection or a connection through an intermediate medium; they can be internal communication or interaction relationship between two elements.
  • connect with, ” “connected with, ” “fixed, ” “mounted, ” etc. should be understood generally.
  • they can refer to a fixed connection or a connection through an intermediate medium; they can be internal communication or interaction relationship between two elements.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Cookers (AREA)

Abstract

L'invention concerne une cocotte et un ustensile de cuisine à induction électromagnétique. La cocotte comprend : un corps de cocotte (20) et un couvercle de cocotte (10). Le corps de cocotte (20) est muni d'une sonde anti-débordement (23) qui est isolée du corps de cocotte (20) et connectée électriquement à un panneau de commande, et la sonde anti-débordement (23) est en contact avec une zone métallique (11) présente sur le couvercle de cocotte (10) lorsque le couvercle de cocotte (10) recouvre le corps de cocotte (20). Le corps de cocotte (20) est isolé de la zone métallique (11) et connecté électriquement au panneau de commande. Le corps de cocotte (20) est connecté électriquement à la sonde anti-débordement (23) lorsque le liquide montant dans le corps de cocotte (20) entre en contact avec la sonde anti-écoulement (23) ou la zone métallique (11) du couvercle de cocotte (10), de sorte que le panneau de commande commande l'état de chauffage d'une cuisinière à induction électromagnétique sur la base d'un signal de connexion électrique.
PCT/CN2019/089547 2018-12-14 2019-05-31 Cocotte et ustensile de cuisine à induction électromagnétique WO2020119040A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19897349.7A EP3893699A4 (fr) 2018-12-14 2019-05-31 Cocotte et ustensile de cuisine à induction électromagnétique

Applications Claiming Priority (2)

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CN201811536165.5A CN111317347B (zh) 2018-12-14 2018-12-14 锅具及电磁炉炊具
CN201811536165.5 2018-12-14

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WO2020119040A1 true WO2020119040A1 (fr) 2020-06-18

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CN (1) CN111317347B (fr)
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EP3893699A1 (fr) 2021-10-20
EP3893699A4 (fr) 2022-09-07
CN111317347A (zh) 2020-06-23

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