921results about "Induction heating control" patented technology

The utility model discloses an electromagnetic induction heating module, heating equipment and a slab production line, and relates to the technical field of induction heating. The heating module comprises a shell, a coil, and a first magnetic conductive assembly, a second magnetic conductive assembly and a third magnetic conductive assembly which are sequentially arranged along the length direction of the coil, the first magnetic conductive assembly and the third magnetic conductive assembly respectively correspond to two side parts of a to-be-heated object, and the second magnetic conductive assembly corresponds to the middle part of the to-be-heated object; the first magnetic conductive assembly and the third magnetic conductive assembly each comprise a first magnetizer which is matched with the coil and can move up and down, and the second magnetic conductive assembly comprises a second magnetizer which is matched with the coil and is fixed. By adjusting the gap between the first magnetizer and the to-be-heated object, the heating temperature of the area corresponding to the to-be-heated object is adjusted, and the temperature uniformity of the to-be-heated object in the width direction is achieved.

The invention discloses an induction heating path optimization method suitable for a heterogeneous noise elimination structure, and particularly relates to the field of induction heating path optimization of the heterogeneous noise elimination structure, and the method comprises the steps: building a grid coordinate in a target region, collecting the heat conductivity coefficient, the specific heat capacity, the thermal resistance value and the induction coil gap value of each grid node in the grid coordinate, generating a thermal response model; and performing heat conduction calculation on the thermal response model and a preset heating power curve, calculating a temperature rise value of each grid node in a fixed preset heating time, marking the grid nodes of which the temperature rise values reach or exceed a safe temperature threshold and the adjacent grid nodes as heat concentration areas, and generating risk area data after gathering the heat concentration areas. A risk assessment and dynamic reordering mechanism based on local thermal characteristic difference is introduced in a heating path planning process, so that advanced identification and real-time avoidance of a heat concentration area are realized.

A curb stone or paving stone charging device for charging an energy store of an electrically driven vehicle. The curb stone or paving stone charging device includes a main body, an inner receiving space which is delimited on a plurality of sides by the main body, a cover which closes the receiving space, a charging unit having components which are arranged in the receiving space, a charging socket which is connected mechanically at least indirectly to the cover, and a heating element which heats the cover. The main body is produced from a metal, a concrete, a natural stone, a plastic or a composite material.

The present specification relates to a coil module and a home appliance including the same. A home appliance according to one embodiment of the present invention may comprise: a coil module comprising a plurality of first coil units stacked in a vertical direction and comprising a plurality of working coils, and a plurality of second coil units stacked in the vertical direction, a plurality of second coil units including a plurality of sensing coils and a wiring pattern electrically connecting the terminal unit with the working coil or the terminal unit with the sensing coils, and arranged in a different layer from the plurality of first coil units; and a control unit that performs container detection by using the sensing coil, and controls driving of the working coil in accordance with a result of the container detection.

The application discloses an electromagnetic heating circuit, a control method and device of an electrical appliance, and the electrical appliance. The circuit comprises at least two resonance modules, at least two switch modules, an inverter module, a gating module, an oscillation driving module, a voltage signal extraction module, and a control module. The switch module comprises a fixed end, a movable end, a first position end, and a second position end. The fixed end of the at least two switch modules is connected to the at least two resonance modules one by one. The inverter module is connected to the first position end. The gating module is connected to the second position end. The oscillation driving module is connected to the gating module. The voltage signal extraction module is connected to the oscillation driving module. The control module is connected to the inverter module, the voltage signal extraction module, the gating module, and the at least two switch modules. The technical scheme provided by the embodiment of the application can detect whether a pot is placed at a position corresponding to a resonance module not in a heating state when part of the resonance modules in the electromagnetic heating circuit are in the heating state.

The invention discloses a tire electromagnetic induction heating system control method based on multi-physics field coupling simulation. The method comprises the following steps: carrying out multi-physics field coupling simulation modeling; performing system optimization analysis; deploying a real-time control system; and performing performance verification and iterative optimization. According to the method, control over the complex physical process is achieved through multi-physics field coupling simulation, a closed-loop coupling system of physical entity-digital twinborn body-intelligent optimization-real-time control is constructed, data two-way circulation and state real-time synchronization are achieved, and the accuracy and timeliness of system regulation and control are improved; the global optimization of the system performance is realized by adopting a multi-objective optimization method, and the problem of local optimization is avoided; and through deep integration of a digital twinning technology and real-time control, predictability and controllability of the production process are realized, and the tire quality is remarkably improved.

The invention relates to a temperature control induction heating system for surfacing of the inner wall of a nuclear power main pump shell. The system is formed by splicing a top induction heating tool, a bottom induction heating tool and a plurality of side induction heating tools through a stainless steel connecting frame, and an intelligent temperature control system. The intelligent temperature control system is composed of a distributed temperature measurement sensor, a central control unit and a man-machine interaction terminal. The heating method comprises the steps of tool assembly, preheating, dynamic interlayer temperature control in the surfacing process, programmed postweld heat treatment and data recording and dismounting. The device has the advantages that the device is adaptive to the special-shaped curved surface of the pump shell through modular design, the power of each tool is dynamically and independently adjusted, the problems of uneven temperature and low efficiency of a traditional heating mode are solved, and the surfacing quality and the process traceability are remarkably improved.

The invention belongs to the technical field of induction cookers, and discloses a low-power continuous electromagnetic heating technology and an induction cooker, the resonant frequency of an LC resonant circuit is designed to be greater than 18kHz, and a SiC MOSFET device works at a switching frequency higher than the resonant frequency, so that the low-power continuous electromagnetic heating technology is realized. The intermittent heating problem of'stop-start-stop-start 'caused by too small duty ratio during low-power heating of the existing induction cooker is effectively solved; according to the technical scheme, the power-duty ratio mapping data is obtained through the MCU module, and the duty ratio and the pulse width of the PWM signal are accurately calculated according to the target power, the target switching frequency and the timer clock frequency, so that continuous and stable energy output is realized under low power; the electromagnetic oven can effectively solve the problems of intermittent heating, unstable circuit work, increased energy consumption and noise of the existing electromagnetic oven during low-power heating.

The invention discloses an intelligent electromagnetic heating safety control system for an oil field, and relates to the technical field of heating control, the system is composed of a plurality of functional modules, and the system comprises a feature extraction module for collecting time sequence data of intelligent electromagnetic heating equipment, including air outlet temperature, pressure and hot air flow, performing phase-space reconstruction on the time sequence data, performing singular value decomposition on the reconstructed time sequence data, and extracting dynamic association features; the data migration module is used for constructing a health model adaptive to a new working condition by adopting a deep migration learning method and combining with the time sequence data under the current working condition based on normal operation data under historical similar working conditions; and the fault prediction and diagnosis module is used for acquiring the dynamic correlation features, inputting the dynamic correlation features into the health model to obtain health feature representation, health degree and fault prediction time, calculating residual errors based on the health feature representation, introducing time-frequency features, and adopting a support vector machine classifier to take the time-frequency features and the residual errors as input.

In one embodiment, a controller of an induction heating apparatus receives a power level input for a heating area, determines a required power value corresponding to the power level, determines a heating frequency corresponding to the required power value, sets a driving frequency of the working coil to an initial frequency determined based on the heating frequency and drives the working coil, and changes the driving frequency from a current driving frequency to a target frequency based on a predetermined frequency change cycle.

The invention discloses a lithium battery copper foil online aging device and method, and belongs to the technical field of copper foil production, the device comprises an anode tank, a passivation tank, a drying and aging mechanism and a copper foil winding mechanism which are arranged in sequence, and a roll shaft system for realizing copper foil conveying; the drying and aging mechanism comprises an electromagnetic induction heating coil and an infrared temperature sensor, the electromagnetic induction heating coil is located under the copper foil, and the electromagnetic induction heating coil is connected with an alternating current source; the infrared temperature sensor is used for collecting surface temperature data of the copper foil in real time, and the infrared temperature sensor is in communication connection with a power supply host of the electromagnetic induction heating coil; and a cooling mechanism for cooling the surface of the copper foil is arranged on the output side of the drying and aging mechanism. The aging time is greatly shortened, and the production efficiency can be remarkably improved; and through accurate temperature and stress feedback control, uniform heating of the copper foil is ensured, internal stress is effectively eliminated, and the warping degree of the copper foil is reduced.

The invention provides an in-situ thermal field induction heating module design method and device, and relates to the technical field of laser manufacturing, and the in-situ thermal field induction heating module design device comprises an optical fiber laser, a laser cladding nozzle, a six-axis mechanical arm, a coil adjusting structure, an induction coil, an induction power supply, a water cooling machine, a molten pool monitoring and control system and a base material; the optical fiber laser is connected with the laser cladding nozzle, the six-axis mechanical arm is used for controlling the laser cladding nozzle to move, and the coil adjusting structure is installed on the six-axis mechanical arm and connected with the induction coil so that the induction coil can synchronously move along with the laser cladding nozzle. The sprayed metal powder is solidified on the base material to form a cladding layer, the induction power supply generates high-frequency current and conducts the high-frequency current to the induction coil, the induction coil heats the cladding layer, and the water cooling machine is used for cooling the induction coil; the molten pool monitoring and control system is installed on the side face of the molten pool and used for monitoring thermal field distribution of the molten pool in real time. The method has the advantage that the problem that defects such as cracks and air holes are prone to being generated in the laser cladding process is solved.

An image heating device configured to heat an image formed on a recording material, includes a tubular rotary member, a magnetic core material, an excitation coil, an inverter, a control unit, and a power cutoff unit configured to cut off supply of power from the inverter to the excitation coil regardless of a control state of the inverter by the control unit in a case where the power input from the inverter to the excitation coil exceeds a threshold, the control unit is configured to change a driving frequency of the inverter. The power cutoff unit is configured to change a value of the threshold based on a value of the driving frequency of the inverter.

The invention discloses a working parameter determination method and device, electromagnetic heating equipment and a storage medium, the method is applied to the electromagnetic heating equipment with a plurality of detection devices, and the detection devices are used for detecting working parameters of corresponding positions; the method comprises the steps that under the condition that electromagnetic heating equipment heats cookware, detection devices covered by the cookware are classified into detection groups according to the current heating position of the cookware; and determining the working parameters corresponding to the cookware according to the detection data corresponding to the detection device with the normal working state in the detection group under the condition that the working state of at least one detection device in the detection group is abnormal and the working state of at least one detection device in the detection group is normal, so that the working parameters of the cookware are determined according to the detection data corresponding to the detection device with the normal working state in the detection group. Under the condition that the working states of part of the detection devices are abnormal, the working parameters can be determined through the detection devices in the normal working states, and the probability of normal working of the electromagnetic heating equipment is effectively improved.

The present disclosure relates to a control system for controlling a heater comprising at least one heating element.SOLUTION: The control system includes a power converter operable to provide adjustable voltage outputs to the heater, sensor circuitry to measure electrical characteristics of heater elements of the heater, a reference temperature sensor to measure a reference reference temperature at the heater, and a controller. The controller is configured to calculate a primary temperature of the heater elements based on the electrical characteristic and to determine a voltage power to be applied to the heater based on at least one of the reference temperature and the primary temperature. The controller is configured to operate in at least one of an operational mode and a learning mode and to execute a protection protocol when voltage is supplied to the heater.SELECTED DRAWING: Figure 1

An apparatus (2) for an aerosol provision device, the apparatus comprising a central controller (4) and a plurality of induction cells (7a-c). Each induction cell of the plurality of induction cells (7a-c) comprises a resonant circuit (6a-c) comprising an inductive element (8a-c) and a capacitive element (10a-c) configured to inductively heat a susceptor, and a local controller (12a-c). The local controller (12a-c) is configured to: receive one or more commands from the central controller (4); perform at least one action based on the one or more commands received from the central controller (4); and send feedback to the central controller (4).

In the control device, storage medium, computer program product, aerosol generating device and control method thereof, the aerosol generating device includes a heating element (13). The heating element is the heating element (13) having a magnetic temperature characteristic. The aerosol generating device includes an RLC circuit (12). The RLC circuit (12) includes an inductor coil, and at least a portion of the inductor coil is located within the magnetic field of the heating element (13). The control module is used to control the RLC circuit (12) to generate an alternating current in the inductor coil to inductively heat the heating element, and to determine the temperature of the heating element (13) by detecting a specific parameter of the RLC circuit (12).

An aerosol generating device (10) comprises a heating chamber (18) for receiving at least part of an aerosol generating substrate (102) and an induction heating arrangement (46) configured to heat the aerosol generating substrate (102) to generate an aerosol to be inhaled, the induction heating arrangement (46) comprising a single induction coil (48) disposed around or adjacent to the heating chamber (18). The aerosol generating device (10) comprises a controller (24) configured to control the induction heating arrangement (46) to supply an alternating electric current to the single induction coil (48). The induction heating arrangement (46) includes a plurality of connectors (C1-C5) associated with the single induction coil (48) which are arranged and configured to permit the supply of the alternating electric current to one or more coil sections (L1-L4) to selectively energise the one or more coil sections (L1-L4). The aerosol generating device (10) also comprises a plurality of inductively heatable susceptors (40, 41, 42, 43) positioned in the heating chamber (18) adjacent to each coil section (L1-L4) to define corresponding heating areas (40a, 41a, 42a, 43a) within the heating chamber (18).

Induction heating from an induction coil (108) is used to separate a metal medical sharp (144) from its holder (142) by applying a high-frequency oscillating magnetic field that excites eddy currents and resistance heating in the sharp. The heated metal sharp melts the adhesive or plastic securing the sharp to its holder. The use of induction heating is advantageous in that it does not require direct contact between the electrical circuit and the sharp or its holder. The heating can also act to sterilize the sharp and thereby render it less hazardous at the same time that it separates the sharp from its holder. The induction coil can have a stepped or conical shape to concentrate the RF energy at the interface between the metal sharp and its holder.

The utility model provides a drive control circuit and cooking equipment. The drive control circuit comprises a first power supply; a resonance circuit; a power device; the sampling end of the first sampling circuit is connected with the first end of the resonance circuit, and the first sampling circuit is used for collecting first voltage at the first end of the resonance circuit; the sampling end of the second sampling circuit is connected with the first end of the power device, and the second sampling circuit is used for collecting second voltage at the first end of the power device; the comparator is respectively connected with the output end of the first sampling circuit and the output end of the second sampling circuit and is used for outputting a comparison result of the first voltage and the second voltage; and the controller is respectively connected with the output end of the comparator and the control end of the power device and is used for driving the power device according to the comparison result. In the process, the probability that the power device is broken down or the service life is attenuated is reduced, so that the reliability of the driving control circuit is improved.

A method for controlling an induction heating apparatus comprises steps of receiving a power level for a heating region, supplying a switching signal to an inverter circuit based on a predetermined reference frequency, measuring an output current value of the inverter circuit, measuring a DC link voltage value, calculating an output power value of the working coil based on the output current value of the inverter circuit and the DC link voltage value, determining a heating frequency of the inverter circuit based the result of comparison by comparing the output power value of the working coil with a required power value, and supplying a switching signal to the inverter circuit based on the heating frequency.

The invention discloses an induction cooker wide-range ZVS efficient power regulation control method based on load identification, and the method specifically comprises the following steps: 1, applying a minimum pulse, measuring a bus voltage VDC and a load current I0, and calculating time intervals t10, t20, t30 and t40; 2, calculating a damping resonance period Td, a damping resonance frequency omega d and a damping coefficient alpha; 3, calculating equivalent resistance REQ, equivalent inductance LEQ and resonant frequency omega0; step 4, calculating a minimum power switching point PPFM.min from the PFM to the PDM; and 5, performing power regulation control on the induction cooker. The problems that the power control precision is low due to the fact that a traditional induction cooker cannot accurately recognize the load in real time, and the power adjusting range is narrow and low-power output is unstable due to the fact that a PDM-PFM switching point is not clear are solved.

The invention relates to a cooking system (10a), in particular an induction cooking system, having an insulation unit (12a) for thermal insulation of a set-down plate (14a) relative to a food receiving element (16a) and having a sensor unit (18a) for ascertaining the presence of the insulation unit (12a) on the set-down plate (14a) and in particular between the set-down plate (14a) and the food receiving element (16a). To increase the operational reliability and efficiency of the cooking system (10a), it is proposed that the sensor unit (18a) have at least one permanent magnet (28a) and be provided for ascertaining the presence of the insulation unit (12a) as a function of a magnetic field of the permanent magnet (28a).

A method, performed by an aerosol-generating device, of determining a temperature model of a susceptor, includes applying a first signal having a first frequency to a coil of a heater so that an alternating magnetic field is generated, determining a first value of an electrical characteristic of a susceptor indicated by the first signal, applying a second signal having a second frequency to the coil of the heater so that an alternating magnetic field is generated, determining a second value of the electrical characteristic of the susceptor indicated by the second signal, and determining a first temperature model for the susceptor based on the first value and the second value, wherein the first temperature model may be a model used for determining a temperature of the susceptor based on the electrical characteristic of the susceptor.

An induction heating device includes a working coil, an inverter, an inverter driving unit configured to apply a switching signal to the inverter to enable the inverter to perform a switching operation, a control unit configured to generate and apply a control signal to the inverter driving unit to cause the inverter driving unit to generate the switching signal based on the control signal, and a determination unit configured to determine a type of an object disposed on the induction heating device based on (i) a first resonant current value measured from the working coil in response to operation of the inverter by the switching signal having a first operation frequency and (ii) a second resonant current value measured from the working coil in response to operation of the inverter by the switching signal having a second operation frequency.

The present disclosure relates to an induction heating cooktop comprising: a glass top plate on which a cooking vessel is placed; a working coil module which generates a magnetic field so as to heat the cooking vessel; and an inverter which is operated to allow a current to flow through the working coil module, wherein the working coil module comprises: a first working coil wound to form a plurality of turns; and a second working coil wound between the turns of the first working coil.

An aerosol generating device comprises an induction heating circuit for inductively heating a susceptor arrangement to heat an aerosol generating material to thereby generate an aerosol. The device is configured such that during operation a level of electromagnetic radiation emitted by the device is: less than 40dBµV / m over a frequency range of 30MHz to 225MHz and / or less than 47dBµV / mover a frequency range of 235MHz to 1GHz, and / or less than 70dBµV / mover a frequency range of 1GHz to 3GHz, and / or less than 74dBµV / mover a frequency range of 3GHz to 6GHz.

The application discloses a kind of adaptive power control systems of intelligent cooking equipment, including power main control unit, for adjusting power drive according to load variation;Sampling unit is connected with the power main control unit, for the data sampling of cooking equipment and is passed to power main control unit;Drive execution unit is connected with the power main control unit, for receiving the drive control signal of power main control unit and driving the heating power of cooking equipment;Protection unit is connected with the power main control unit, for realizing drive protection.The application includes power main control unit, sampling unit, drive execution unit and protection unit, which can effectively adjust output power according to the sampling information of load, maintain optimal heating efficiency, so as to meet the cooking needs of different food materials, so as to improve cooking effect, solve the technical deficiencies of single power control in the prior art.

The utility model relates to a simple induction heating power supply for welding preheating dehydrogenation, which comprises a main circuit and a control circuit, the main circuit is used for realizing induction heating, converting external three-phase alternating current into intermediate-frequency alternating current for induction heating, and realizing heating of an induction heating load; the control circuit is used for controlling and monitoring the main circuit, and the induction heating power supply is controlled and managed through the main control board. According to the utility model, the aims of simplicity in operation, cost reduction and light weight of equipment are fulfilled, the control precision and efficiency are improved, the protection function is enhanced, the energy consumption and noise are reduced, and the requirements of conventional preheating hydrogen elimination application occasions are better met.