35 results about "Induction cooking" patented technology

An induction cooking appliance device includes an independent heating unit including an inductor, and a power supply unit configured to provide an alternating current for the first heating unit. The power supply unit includes a configuration unit configured to provide for a change of configuration of the power supply unit between a half-bridge topology and a full-bridge topology for supplying the first heating unit.

The invention relates to an induction-compatible cooking vessel (1) and to a method for producing an induction-compatible cooking vessel (1). The cooking vessel (1) here has a base (2) for arranging the cooking vessel (1) in surface contact with an induction cooking appliance and also has a side wall (4) which rises up from the base (2) and adjoins an edge (3) of the base (2), wherein a partially curved transition region (5) is formed between the base (2) and the side wall (4), wherein at least the base of the cooking vessel (1) is formed from aluminium or an aluminium alloy. In order to provide an induction-compatible cooking vessel (1) which allows maximum possible input of heat by induction and at the same time allows an excellent cooking result on account of a sufficiently high thermal conductivity of the material, while fault codes on an induction cooking appliance are also avoided, provision is made for at least part of the transition region (5) to have an induction-compatible coating (6), which is applied by a solid-coating process and is intended to make the cooking vessel (1) suitable for induction and to allow additional active heating of the side wall (4), and for at least part of the side wall (4) to be free of the induction-compatible coating (6) applied by the solid-coating process.

A method for controlling a quasi-resonant inverter (13) in an induction cooking appliance (1) provided with an induction heating coil (4) is disclosed. The quasi-resonant inverter (13) comprises a switching device (21) electrically connected to the induction heating coil (4) through a node (20) having a first voltage (VC(t)) indicative of a voltage across the power switching device (21). The method comprises the steps of: providing an enabling signal (K1) comprising a plurality of pulses to the switching device (21) in order to turn on and off said switching device (21) within a turn-on period (tON) and a turn-off period (tOFF); determining a second voltage (VCmin) indicative of a minimum value of the first voltage (VC(t)) during the turn-off period (tOFF); adjusting the turn-off period (tOFF) based on the second voltage (VCmin); and adjusting the enabling signal (K1) based on the adjusted turn-off period (tOFF).

An induction cooking hob (1) for thermally treating a food product (5) comprising a liquid; the induction cooking hob (1) comprises: at least one heating zone (3) configured to receive a cookware (4) containing a food product (5) to be heat treated and comprising an induction coil (9) and a power converter (10) configured to supply electrical power to the induction coil (9) in order to generate a time-varying electric field suitable for heating the cookware (4); a sensor assembly (14) configured to provide an electrical signal relating to at least one physical quantity associated with a thermal treatment of the food product (5); and a control unit (6) operatively connected to the power converter (10) and the sensor assembly (14) and configured to determine when a dry cookware condition occurs due to liquid evaporation during thermal treatment of the food product (5) based on an electrical signal provided by the sensor assembly (14).

To provide a disposable cooking cover for preventing oil stains and the like from scattering around a frying pan or a pot. [Solution] A cooking cover (1) for a circular frying pan (2) or pot, consisting of a cylindrical piece of paper and a notch (6) at the bottom of the cylindrical piece of paper, wherein the cylindrical piece of paper is at least 15 cm high and has a diameter larger than that of the circular frying pan or pot, and furthermore the cylindrical piece of paper is made of ordinary paper that is not coated with a non-flammable material, and the notch is at least 5 cm high enough to accommodate the handle of the circular frying pan or pot, or a notch that allows air to enter to generate an updraft, and can be used with an induction cooking heater.

An induction cooking appliance includes a cooktop that includes a heating element. The heating element includes an induction coil. The induction cooking appliance also includes a cooling fan, a temperature sensor, and a controller in communication with the temperature sensor. A method of operating the induction cooking appliance includes the controller performing a cooking operation. The cooking operation includes activating the heating element of the induction cooking appliance. The method also includes monitoring a temperature with the temperature sensor during the cooking operation. The method further includes operating the cooling fan based on the monitored temperature of the temperature sensor.

The invention relates to an induction cooking device. The induction cooking device comprises: a bearing base provided with a control unit and configured to be arranged below a console; and-a frame connected in use to the carrier base and configured to be placed in an opening arranged in the console, where the frame comprises an induction device comprising an induction coil for heating by induction a pot placeable on the frame, where the induction device is connectable to the carrier base.

A household appliance (10), particularly a cooking appliance, more particularly a cooking hob, even more particularly an induction cooking hob, comprises a first circuit board (22) and a second circuit board (22) or a first circuit board (22) and a mains connection unit (36), particularly a mains terminal block or a power supply box. These pairs of units (22, 36) are electrically connectable by a connection means comprising at least one connection line (40, 60). The first circuit board (22) comprises a first electrical connector (52, 62) for an electrical connection for power and / or information transmission. The first electrical connector (52, 62) of the first circuit board (22) is equippable with the connection line (40, 60) after arrangement of the first circuit board (22) in a housing (12) of the household appliance (10), preferably after arrangement of the first and second circuit boards (22) or of the first circuit board (22) and the mains connection unit (36) in the housing (12). At least the first circuit board (22) is arrangeable or arranged in the housing (12) of the household appliance (10) at a predefined position in a way that also the first electrical connector (52, 62) is arranged at a predefined position and the first electrical connector (52, 62), which is arranged at said predefined position, is accessible for the equipment with the connection line (40, 60) from above, preferably for an automated equipment in a top down movement, particularly by an equipment robot.

An induction heating system for an induction cooking appliance is provided. The induction heating system includes an induction coil system operable to inductively heat a load with an induction coil. The induction heating system further includes a noise rejection circuit configured to determine an output signal indicative of one or more induction coil parameters of the induction coil system based at least in part on a measurement signal indicative of a voltage at a first node of the induction coil system, the first node defined between the induction coil and one or more resonant capacitors of the induction coil system, and one or more noise signals indicative of a voltage at one or more second nodes of the induction coil system.

An induction heating system for an induction cooking appliance is provided. The induction heating system includes a plurality of coils operable to inductively heat one or more loads. The induction heating system further includes one or more inverters operable to provide an alternating current. The induction heating system further includes an auxiliary load detection circuit. The induction heating system further includes a plurality of switching devices operable to switch each coil of the plurality of coils from the one or more inverters to the auxiliary load detection circuit. The induction heating system further includes a controller configured to control one or more first switching devices of the plurality of switching devices to operate one or more first coils of the plurality of coils in a test mode, wherein in the test mode, the controller controls the one or more first switching devices to switch the one or more first coils from the one or more inverters to the auxiliary load detection circuit.

The present invention relates to a sensor means (11, 35, 49, 71) or module for determining a particularly elastic displacement or deflection or bending of a panel (3), in particular a glass panel, or of a section of a panel or of an insert in relation to the panel (3). The sensor means (11, 35, 49, 71) or module and the panel (3) or said section thereof forming a weighing means, in particular a scale. The sensor means (11, 35, 49, 71) or module is adapted to be integrated in or allocated to a household appliance (1), in particular a cooking hob, more in particular an induction cooking hob, and comprises or is connected to at least one processing and / or interpretation and / or compilation means, preferably for providing a particular high sensor sensitivity and / or evaluation unit accuracy. Further, a household appliance (1) is disclosed which comprises an at least approximately horizontal panel (3), in particular a glass panel. The panel (3) is part of or is in functional connection with a scale for weighing an item (15) placed on the panel (3). Finally, the invention relates to a method for determining the weight of an item (15) on an at least approximately horizontal panel (3) of a household appliance (1), in particular on a top panel (3) of a cooking hob. An acceleration of a panel (3) section or of a panel reference point or reference area, in particular a reference point or a reference area on a panel surface (7), is estimated or determined during a displacement or deflection or bending of the panel section or the panel reference point or reference area due to a placing of the item (15) on the panel.

The invention discloses an induction type cooking device suitable for the hesitant requirement. The induction cooking appliance comprises: a surface (2); a copper coil (3); a generator (4); a dedicated controller (8); a main controller (5); initializing the component (10); and an adapter (11); wherein the generator (4) is configured to receive instructions from the dedicated controller (8) to provide a current to the copper coil (3) during a specific time frame programmed in the dedicated controller (8); wherein the copper coil (3) is adapted to generate magnetic induction as a result of receiving a current from the generator (4); wherein the adapter (11) comprises an iron layer or an iron-containing alloy layer placed above the surface (2) and is designed to receive the magnetic induction from the copper coil (3) and to generate heat due to the magnetic induction, so that within the specific time frame, food in a cooking vessel placed on the adapter (11) can be heated or cooked, the current change is not caused when the cooking container is placed or moved away; and wherein the initialization means (10) is adapted to check, when the current supply of the induction cooking appliance is resumed, whether the dedicated controller (8) is in a "Sunday" state, and to operate the dedicated controller (8) if it is in the "Sunday" state, and wherein the initialization means (10) is adapted to initialize the dedicated controller (8) if it is in the "Sunday" state; wherein the dedicated controller (8) is adapted to, according to an operation plan of the dedicated controller (8), restore the operation of the induction cooking device to the same state as the operation state of the induction cooking device when the current supply is stopped.

To provide an induction heating cooker capable of efficiently heating a heating object.SOLUTION: An induction heating cooker according to the present disclosure includes a top plate, a coil unit, and a controller. The coil unit includes a plurality of coil pieces disposed in the heating region. The heating region has a plurality of coil arrangement regions defined by an outer peripheral line defining an outer periphery of the heating region and a plurality of boundary lines extending from a center of the heating region toward the outer periphery. The coil piece is disposed in the coil arrangement region. The controller is capable of switching between a plurality of heating states having different local strength distributions of heating to the object to be heated by controlling a parameter of a current while causing the current to flow through the plurality of coil pieces, has a plurality of heating sequences in which one or more heating states are combined, acquires a cooking mode, and switches between the plurality of heating sequences according to the cooking mode.SELECTED DRAWING: Figure 1

The invention relates to a distance induction control method of a range hood, the range hood and a device, and belongs to the technical field of intelligent kitchen appliances. The method comprises the following steps: obtaining a reference capacitance value of an induction coil key according to a first real-time capacitance value, determining whether to trigger an induction coil key or not according to the second real-time capacitance value, the reference capacitance value and a preset distance capacitance threshold value, and determining whether to release the induction coil key or not according to the second real-time capacitance value and the reference capacitance value; according to the technology, the reference capacitance value is firstly calculated after the range hood is started, and the induction coil key can be triggered or released according to the real-time capacitance value change caused by the distance between the hand and the induction coil key, so that various functions of the range hood can be controlled, and non-contact control of all the functions of the range hood can be realized; and the use experience of the user is effectively improved.

Method to control a quasi-resonant inverter (13) in an induction cooking appliance (1) provided with an induction heating coil (4). A switching device (21) is electrically connected to the induction heating coil (4) by a node (20) having a first voltage (VC(t)) which is indicative of the voltage across the power switching device (21). The method includes: providing to the switching device (21) an enabling signal (K1) comprising a plurality of pulses, in order to switch-on and switch-off the switching device (21) for a switch-on period (tON) and a switch-off period (tOFF), determining a second voltage (VCmin) indicative of the minimum value of the first voltage (VC(t)) during the switch-off period (tOFF), regulating the switch-off period (tOFF) based on the second voltage (VCmin), and regulating the enabling signal (K1) based on the regulated switch-off period (tOFF).

The utility model relates to an induction cooking stove frame which comprises a body, the body is arranged on a supporting panel, and at least an induction module and a flat cover element made of glass or ceramic are arranged in the supporting panel. The flat cover element is designed to receive a container to be heated and to cover the body. According to the invention, a sensing module is arranged inside the body, which sensing module is tightly pressed against the cover element on one side and, on the other side, which sensing module cooperates with the bottom of the body facing away from the cover element by means of a plurality of supports. Each of the plurality of supports includes a removable deformable element and extends substantially perpendicular to the sensing module, a projection holding the deformable element in position, where each of the projections of the plurality of supports is formed with a wedge-shaped section in its longitudinal direction.

A circuit apparatus for an induction cooktop including at least one induction coil. At least one first circuit board extends along a first plane. At least one second circuit board extends along a second plane and is rigidly connected with the at least one first circuit board. Power circuitry is disposed on the at least one first circuit board and is configured to supply power to the at least one induction coil. Switching circuitry is disposed on the at least one second circuit board and is electrically interposing the power and control circuit and the at least one induction coil. The switching circuitry supplies a drive signal to the at least one induction coil. A control circuit is disposed on the at least one first circuit board and is configured to control the switching circuitry.

A bipolar discharge circuit (1) for sensing a cooking zone (Z) to heat and detect a cookware (W), the bipolar discharge circuit comprising: a line mains supply terminal (T1) for connection to a mains supply line (L) of a mains supply AC power source (2) and a neutral line mains supply terminal (T2) for connection to a mains neutral line (N) of the mains supply AC power source (2); a rectifier (3) connected to the line mains connection (T1) and the neutral mains connection (T2); and a DC bus capacitor (6) connected to the rectifier (3). The DC bus capacitor (6) comprises a positive capacitor terminal (H1) and a negative capacitor terminal (H2) for connection to the induction cooking zone (Z). A switching circuit (9) is provided and is configured to discharge the DC bus capacitor (6) via the line mains terminal (T1) and the neutral mains terminal (T2).

An induction heating system for an induction cooking appliance is provided. The induction heating system includes a bus capacitor configured to receive direct current (DC) power. The induction heating system further includes a first inverter system operatively coupled to the bus capacitor, the first inverter system configured to energize a first coil based at least in part on the DC power. The induction heating system further includes a second inverter system operatively coupled to the bus capacitor, the second inverter system configured to energize a second coil based at least in part on the DC power. The first inverter system is further configured to at least partially discharge the bus capacitor based at least in part on a start-up time of the second inverter system.

The present invention relates to an induction cooking appliance that can be installed beneath a kitchen countertop. The invention is designed to heat a cooking vessel by penetrating the countertop through electromagnetic induction, thereby providing efficient utilization of kitchen space, ease of hygiene management, improved kitchen design, and enhanced user safety and convenience. By using a special fixing device and protective material between the countertop and the induction appliance, safe and effective cooking is enabled, and a Bluetooth control method is introduced to allow for smooth operation without the user needing to directly operate the appliance beneath the countertop.

An induction cooking appliance includes a cooktop having a cook surface, an induction coil below the cook surface and configured to heat cookware on the cook surface, a temperature sensor coupled to the cooktop and configured to provide a temperature signal indicative of a temperature of the cook surface, and control circuitry in communication with the induction coil and the temperature sensor. The control circuitry is configured to measure an inductance of the induction coil, determine a first temperature estimate based on the inductance, determine a second temperature estimate based on the temperature signal, estimate a temperature of the cookware based on the first temperature estimate and the second temperature estimate, compare the estimated temperature of the cookware to a target temperature set by a user, and control power supplied to the induction coil based on the comparison.

A method for operating an induction cooking device (1) is disclosed in which an alternating current (Iac) is provided and rectified to provide a DC voltage (Udc) to a DC voltage bus (14) of the induction cooking device (1), in which during a normal operating mode (N-Op) of an induction heating circuit (26) of the induction cooking device (1), the DC voltage (Udc) is supplied to the DC voltage bus (14) of the induction cooking device (1). A direct current (Idc) corresponding to the DC voltage (Udc) is selectively provided from the DC voltage bus (14) to an induction heating coil (10a-d) of the induction heating circuit (26) by means of a first switching element (30) having an on-state in which the direct current (Idc) passes and an off-state in which the direct current (Idc) is blocked, in the normal operating mode (N-Op), the first switching element (30) is periodically switched by applying a corresponding switching signal (20), in which the first switching element (30) is periodically switched at a first on-time (Ton1), which is the time during which the first switching element is in the on-state during each switching period, and in which the first switching element (30) is switched at a second on-time (Ton2), which is the time during which the first switching element is in the on-state during each switching period. For the first switching element (30) being in the open state during at least one and preferably at least two half-wave cycles of the alternating current (Iac), a zero crossing point (Iz) of the alternating current (Iac) is determined, and a preliminary operating mode (P-Op) of the induction heating circuit (26) is initialized within a predetermined vicinity of the zero crossing point (Iz). In the preliminary operating mode (P-Op), the first switching element (30) is switched a plurality of times with a second conduction time (Ton2), which is shorter than the first conduction time (Ton1).

The invention relates to an induction energy transmission system (10), in particular an induction cooking system, comprising a placement surface (12), comprising a supply unit (14) which has at least one supply induction element (16) arranged below the placement surface (12) for inductively providing energy, comprising at least one placement item (18) which has at least one receiving unit (20) comprising at least one receiving induction element (22) for receiving the inductively provided energy, and comprising an open-loop and / or closed-loop control unit (24) for providing open-loop and / or closed-loop control of the supply unit (14) in order to transmit energy between the supply unit (14) and the receiving unit (20), wherein the open-loop and / or closed-loop control unit (24) is intended to use a parameter set (26) to provide open-loop and / or closed-loop control of the supply unit (14) and to receive at least one parameter (28) from the placement item (18). In order to provide improved ease of use for an induction energy transmission system (10), the open-loop and / or closed-loop control unit (24) is provided to switch off, in at least one operating state, the frequency modulation of the supply unit (14) depending on the at least one parameter (28) received from the at least one placement item (18).

An induction heating device according to one embodiment of the present invention comprises: a first working coil for a first heating zone; the second working coil is used for a second heating area; an inverter including a plurality of switches, switching of the plurality of switches causing a current to flow through the first working coil and the second working coil; and a processor for controlling the switching of the plurality of switches of the inverter, in which the working frequency of the first working coil differs from the working frequency of the second working coil by at least a predetermined frequency value due to the difference between the inductance value of the first working coil and the inductance value of the second working coil.

Disclosed is a method of operating an induction cooking system comprising the steps of; providing an induction cooking system comprising one or more induction hobs comprising a plurality of cooking zones; placing an induction cookware on a first cooking zone of said plurality of cooking zones, the induction cookware comprising one or more sensors; assigning a cooking setting to said first cooking zone; transferring, by a user of said induction cooking system, said induction cookware to a second cooking zone of said plurality of cooking zones; automatically detecting by said induction cooking system, said transferring using sensor input provided by said one or more sensors; and automatically assigning a corresponding cooking setting to said second cooking zone. An induction cooking system and an induction cooking zone are further disclosed.

The invention relates to a sensor device (11, 35, 49, 71) or module for determining a, in particular elastic, displacement or deflection or bending of a panel (3), in particular a glass panel, or of a section of the panel, or of an insert relative to the panel (3). The sensor device (11, 35, 49, 71) or module and the panel (3) or the section of the panel form a weighing device, in particular a scale. The sensor device (11, 35, 49, 71) or module is adapted to be integrated in or assigned to a household appliance (1), in particular a cooking hob, more particularly an induction cooking hob, and comprises or is connected to at least one processing and / or interpretation and / or evaluation device for providing, in particular, a high sensor sensitivity and / or an estimation unit accuracy. Further, a household appliance (1) is disclosed, which comprises an at least substantially horizontal panel (3), in particular a glass panel. The panel (3) is part of or functionally connected to a scale for weighing an item (15) placed on the panel (3). Finally, the invention relates to a method for determining a weight of an item (15) located on an at least substantially horizontal panel (3) of a household appliance (1), in particular a top panel (3) of a cooking hob. An acceleration of a panel section or a panel reference point or a panel reference area, in particular a reference point or a reference area located on a panel surface (7), is estimated or determined during a displacement or deflection or bending of the panel section or the panel reference point or panel reference area due to placing an item (15) on the panel.

A cooking device includes a housing including a non-ferromagnetic surface and a lower shell positioned below the non-ferromagnetic surface. The cooking device also includes an induction cooking coil, a battery assembly configured to provide power to the induction cooking coil via a circuit board assembly, and a heat sink surrounding the battery assembly and the circuit board assembly. The induction cooking coil, the battery assembly, and the circuit board assembly are enclosed by the housing. The cooking device also includes a controller operatively coupled to the circuit board assembly and configured to switch from usage of a first driver circuit of the circuit board assembly to a second driver circuit of the circuit board assembly to power the induction cooking coil.

The invention provides a method for controlling the supply of electric power to an induction cooking appliance (1). The induction cooking appliance (1) comprises a circuitry (10) having: an AC-voltage input (11) for receiving an AC-voltage signal (Vin), a resonance circuit (17) with an induction coil (20) and a resonance capacitor (18), at least one switching element (12) for providing pulsed electric power to the resonance circuit (17), and a capacitor (16) being connected in parallel to the series of the switching element (12) and the resonance circuit (17). The method comprises: receiving an AC-voltage signal (Vin) at the AC-voltage input (11), controlling the circuitry (10) of the induction cooking appliance to enter into a discharging phase (D1) to discharge the capacitor (16), after at least partially discharging the capacitor (16), controlling the circuitry (10) to enter into a first stop phase (D2) in which the switching element (12) is in an off-state, and after the first stop phase (D2), controlling the circuitry (10) to enter into a heating phase (D3) in which the switching element (12) provides pulsed electric power to the resonance circuit (17).

This utility model relates to the field of induction cooking appliance technology and discloses an induction cooking appliance, including an induction cooktop panel, a shell, and a coil module installed inside the shell. An infrared temperature measuring module is detachably installed in the middle part of the coil module. The coil module includes a coil base, a magnetic conductor, and a coil plate, wherein the coil plate is installed above the coil base. This utility model hides or partially hides the entire infrared temperature measuring module inside the coil module, requiring little or no additional space to install the infrared temperature measuring module, reducing the longitudinal (Y-axis) space occupied by the infrared temperature measuring module. This is beneficial for the application of the infrared temperature measuring module in existing appliances and also for the ultra-thin design of the appliance. At the same time, the infrared temperature measuring module being inside the coil module also reduces the distance between the detector and the target object, reducing the path of interfering light entering the detector and receiving a stronger infrared radiation signal from the cookware.

A system for controlling an induction cooking apparatus includes resonant loads each having an induction coil of said induction cooking apparatus, switching circuitry including a shared half-bridge, and a plurality of secondary half-bridges each cooperating with the shared half-bridge to form a plurality of full-bridge inverters. Control circuitry is configured to determine a plurality of target power levels including a target power level for each one of the plurality of resonant loads, calculate a switching frequency common to the shared half-bridge and the plurality of secondary half-bridges based on the comparison of the target levels, generate a plurality of control signals each for application to a half-bridge of the plurality of secondary half-bridges, calculate a phase displacement for each of the plurality of control signals, and determine a maximum current through the shared half-bridge independent of an orientation of the phase displacement for each of the plurality of control signals.