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公开(公告)号：EP3562267A1
公开(公告)日：2019-10-30
申请号：EP19168553.6
申请日：2019-04-10
IPC分类号： H05B6/06
摘要： An induction heating device comprises a D.C. power supply (46) referenced to a ground connection (54). The D.C. power supply (46) is configured to supply power to the induction heating device and comprises a voltage rectifier (50) configured to rectify an input voltage into a direct current and output the D.C. voltage to a D.C. bus (48) and a ground connection (54). The device further comprises a plurality of resonant loads (36) arranged in a matrix (62) comprising a plurality of columns (70) and a plurality of rows (72). Each of the resonant loads (36) is connected at a first end to a row and at a second end to a column (70). A plurality of first switching devices (86a) are in connection with each of the columns (70) between the D.C. bus (48) and at least one of the resonant loads (36). A plurality of second switching devices (86b) are in connection with each of the rows (72) between the resonant loads (36) and the ground connection (54).
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公开(公告)号：EP4386265A1
公开(公告)日：2024-06-19
申请号：EP23216164.6
申请日：2023-12-13
摘要： A gas cooktop appliance (10) includes a burner (12A, 12B, 12C, 12D), a gas supply circuit (14) in fluid communication with the burner (12A, 12B, 12C, 12D), and a valve (16A, 16B, 16C, 16D) for controlling an amount of gas supplied to the burner from the gas supply circuit (14). An electrode (18A, 18B, 18C, 18D) is configured to provide an ignition spark (20) and to obtain an ionization current (22). A control system (100) is operably coupled with the valve (16A, 16B, 16C, 16D) and is configured to compare the ionization current (22) to a setting of the valve and modify the amount of gas supplied to the burner when the difference between the ionization current (22) and the setting of the valve is outside a predetermined threshold.
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公开(公告)号：EP3996470A1
公开(公告)日：2022-05-11
申请号：EP21206257.4
申请日：2021-11-03
IPC分类号： H05B6/12
摘要： An induction cooking apparatus including a coil beam assembly, an inverter assembly, and a heatsink. The coil beam assembly includes one or more induction coils. The inverter assembly includes a first circuit board that is electrically connected to the induction coil(s) such that the inverter assembly is configured to supply electricity to the induction coil(s). The heatsink has a beam-like structure and is attached to both the coil beam assembly and the inverter assembly. The heatsink is positioned above the inverter assembly and below the coil beam assembly such that the heatsink is the sole support structure for the inverter assembly. A method for assembling the induction cooking apparatus is also described.
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公开(公告)号：EP3975663A1
公开(公告)日：2022-03-30
申请号：EP21198697.1
申请日：2021-09-23
发明人： Baldo, Salvatore , Gallivanoni, Andrea , Manohar, Ajit , Parachini, Davide , Pastore, Cristiano Vito
IPC分类号： H05B6/06
摘要： An induction cooking apparatus including a cooktop panel, induction coil, controller, and temperature sensor assembly. A temperature sensor and guiding support are positioned in sliding engagement in an opening in the center of the induction coil where an upper end of the temperature sensor sits above a top surface of the induction coil. The controller includes a first circuit board that supplies electricity to the induction coil. A second circuit board, separate from the first circuit board, is electrically connected to the temperature sensor and includes a cantilevered leaf-spring structure that supports the temperature sensor. The guiding support is a load bearing structure that transmits a biasing force created by deflection of the cantilevered leaf-spring structure to the temperature sensor, which operates to hold the temperature sensor in contact with a lower surface of the cooktop panel.
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公开(公告)号：EP4387392A1
公开(公告)日：2024-06-19
申请号：EP22213623.6
申请日：2022-12-14
IPC分类号： H05B6/06
CPC分类号： H05B6/062
摘要： According to the method of controlling a switching converter of this disclosure, the following operations are carried out: :
regulation of the output power to be delivered to the at least one resonant load is obtained adjusting the common switching frequency of all said PWM control signals and the phase displacement of all said PWM control signals, wherein said step of adjusting the phase displacement is carried out by adjusting a time delay between the turning-on of diagonal switches of said two half-bridge switching stages connecting said resonant load, within the same switching period. The phase displacement is carried out until hard-switching working conditions for said half-bridge switching stages are met, and wherein when said hard switching working conditions are met the method further comprises the step of adjusting the common switching frequency of all said PWM control signals to thereby prevent hard-switching working conditions.
The control method of this disclosure is particularly suitable for being used in multi-stage inverters according to this disclosure, comprising more than three half-bridge switching stages.-
公开(公告)号：EP4240106A1
公开(公告)日：2023-09-06
申请号：EP22159837.8
申请日：2022-03-02
IPC分类号： H05B6/06
摘要： The ticking noise that can be heard when the QR-converter is operated to deliver a power level smaller than the minimum power level for having a soft-switching is due to the fact that during the OFF interval there is no power delivery and the DC-bus capacitance is charged at the peak of rectified mains line voltage.
This drawback may be overcome by discharging purposely the DC-bus during an OFF interval of the QR-converter so as the DC-bus is substantially discharged when a new ON interval of the QR-converter is started.-
公开(公告)号：EP4203609A1
公开(公告)日：2023-06-28
申请号：EP22215226.6
申请日：2022-12-20
IPC分类号： H05B6/06
摘要： A cooking article detection system (10) for an induction cooktop (12) having a first power-delivery induction coil (14) includes a first detector coil (16) overlying the first power-delivery induction coil (14) and including a first conductive element (18) revolving continuously around a centroid (19) in a first tangential direction (20) to define a shape of the first coil (16) that extends in a first linear direction (22) and a second linear direction (24) along a plane (26) and a second detector coil (28) overlying the first power-delivery coil (14) and including a second conductive element (30) connected with the first detector coils (16) and revolving continuously around a second centroid (19A) in a second tangential direction (32), opposite the first tangential direction (20). The second detector coil (28) is linearly arranged with the first detector coil (16) and is spaced apart therefrom in the second linear direction (24). A controller (34) drives the first and second detection coils (16, 28), simultaneously, with a low-voltage, high frequency detection signal, and measures a voltage (V) across the first and second detection coils (16, 28) to identify a cooking article (A) on the induction cooktop (12).
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9.发明公开
公开(公告)号：EP3562268A1
公开(公告)日：2019-10-30
申请号：EP19168555.1
申请日：2019-04-10
IPC分类号： H05B6/06
摘要： An induction heating device comprises a power supply (46) configured to supply D.C. power and a plurality of resonant loads (36). Each of the resonant loads (36) comprises a first node and a second node. The first nodes are in connection with the power supply (46). The device further comprises a plurality of first switching devices (86a). One of the first switching devices (86a) is in connection with the second node of each one of the resonant loads (36). A second switching device (86b) is in connection with each of the first switching devices (86a). A union of activation of one or more activated first switching devices (86a) and the second switching device (86b) supplies current from the power supply (46) through the resonant loads (36) in connection with the one or more activated first switching devices (86a).
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公开(公告)号：EP4418818A1
公开(公告)日：2024-08-21
申请号：EP23157385.8
申请日：2023-02-17
IPC分类号： H05B6/06
CPC分类号： H05B6/062
摘要： This disclosure relates to an induction hob, comprising at least one heating induction coil, a switching converter, wherein the switching converter comprises:
- a DC-bus having a high-side line and a low side line for making available a DC voltage on said DC-bus between the high-side line and the low-side line,
- a plurality of half-bridge switching stages, connected electrically in parallel between the high-side line and the low-side line, each half-bridge switching stage comprising a respective high-side controlled switch and low-side controlled switch connected in series between them and sharing an intermediate current terminal of the half-bridge switching stage,
- at least one C-L-C resonant tank connected between two intermediate current terminals of two half-bridge switching stages, wherein the C-L-C resonant tank comprises the induction heating coil and capacitors, wherein each capacitor (C) is connected in series to the induction heating coil (L) and to the intermediate current terminal of a respective half-bridge switching stage, wherein the C-L-C resonant tank is configured to be magnetically coupled with a respective load, thereby defining at least a first resonant tank . The intermediate current terminal of each half-bridge switching stage is directly connected to a respective capacitor; each half-bridge switching stage and the respective capacitor directly connected thereto are installed on a same circuit board; the at least one C-L-C resonant tank is composed by the heat induction coil (L) electrically connected in series between the two capacitors (C) installed on the circuit board .
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