公开(公告)号：US20240206021A1

公开(公告)日：2024-06-20

申请号：US18539818

申请日：2023-12-14

Applicant: WHIRLPOOL CORPORATION

Inventor： Salvatore Baldo ,  Mario Barbati ,  Andrea Gallivanoni ,  Silvio Sperone

IPC: H05B6/04 ,  H02M1/00 ,  H02M7/48 ,  H02M7/5387 ,  H05B6/06

CPC classification number: H05B6/04 ,  H02M1/0058 ,  H02M7/4815 ,  H02M7/5387 ,  H05B6/065

Abstract: A method of controlling a switching includes a regulating the output power to be delivered to the at least one resonant load, adjusting a common switching frequency of all PWM control signals sent to a plurality of switches and the phase displacement of all said PWM control signals by adjusting a time delay between 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 when said hard switching working conditions are met, the common switching frequency of all said PWM control signals are adjusted to prevent hard-switching working conditions.

公开(公告)号：US20240167697A1

公开(公告)日：2024-05-23

申请号：US18512408

申请日：2023-11-17

Applicant: WHIRLPOOL CORPORATION

Inventor： Andrea Gallivanoni ,  Annalisa Pacioni ,  Andrea Luigi Rainoldi

IPC: F24C15/20

CPC classification number: F24C15/2042 ,  F24C15/2021 ,  F24C15/2085

Abstract: A cooking appliance includes a cooktop including an outer perimeter and defining at least one opening. A plurality of burners located on the cooktop and at least one burner of the plurality of burners is located on at least one turret that defines an internal cavity to direct a downdraft. The at least one turret is moveable within the at least one opening between at least one vacuum position and a flush position.

公开(公告)号：US20230283193A1

公开(公告)日：2023-09-07

申请号：US18116015

申请日：2023-03-01

Applicant: WHIRLPOOL CORPORATION

Inventor： Salvatore Baldo ,  Andrea Gallivanoni ,  Cristiano Vito Pastore ,  Andrea Zoppi

IPC: H02M7/04 ,  H02M7/219 ,  H02M1/00 ,  H05B6/12

CPC classification number: H02M7/05 ,  H02M7/219 ,  H02M1/0058 ,  H05B6/1236

Abstract: A switching converter, such as for an induction cooktop, that can be operated to deliver a power level smaller than the minimum power level for having a soft-switching. Input AC terminals are disconnected from the DC-bus capacitor to prevent it from being charged, so that the DC voltage exhibited by the DC-bus is null or smaller than a minimum nominal value when a next ON time interval T1 begins. The switching converter helps prevent ticking noise.

公开(公告)号：US20220287158A1

公开(公告)日：2022-09-08

申请号：US17189724

申请日：2021-03-02

Applicant: WHIRLPOOL CORPORATION

Inventor： Andrea Gallivanoni ,  Cristiano Vito Pastore

IPC: H05B6/06 ,  F24C7/08

Abstract: A method is provided for controlling average power delivered to coils of a flexible induction cooktop having a plurality of coils that are arranged adjacent to one another in a non-overlapping manner to form an array. The method includes: a) identifying a group of the plurality of coils that are underlying one or more cookware items; b) providing power to at least one coil of the group of coils underlying one or more cookware items; and c) at the same time, not providing power to coils of the group of coils underlying the cookware items that are adjacent to the at least one coil to which power is provided to prevent interaction between adjacent coils of the group of coils.

公开(公告)号：US20220141926A1

公开(公告)日：2022-05-05

申请号：US17090060

申请日：2020-11-05

Applicant: Whirlpool Corporation

Inventor： Salvatore BALDO ,  Andrea Gallivanoni ,  Ajit MANOHAR ,  Cristiano Vito PASTORE

IPC: H05B6/12 ,  H05B6/36

Abstract: 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.

公开(公告)号：US20210385913A1

公开(公告)日：2021-12-09

申请号：US16946098

申请日：2020-06-05

Applicant: WHIRLPOOL CORPORATION

Inventor： Andrea Gallivanoni ,  Cristiano Vito Pastore ,  Federica Inderst

IPC: H05B6/06 ,  G01D5/20 ,  G01B7/02 ,  H05B6/12 ,  F24C7/08

Abstract: A method is provided for identifying cookware items placed on top of an induction cooktop having a plurality of coils. The method includes the following steps: acquire coverage factor information for each coil and collect it into a matrix; identify all local maxima in the matrix; find the coordinates of each of the local maxima as follows: when the local maxima is a single coil, the coordinates are those of the coil center, and when the local maxima is a region of contiguous coils, the coordinates are those of a centroid of the region; calculate distances from each coil to each of the coordinates of the identified local maxima; determine a minimum among the distances; classify the coils in clusters, based on the distances from the local maxima; and use the identified coil clustering to estimate the position, shape, size, and orientation of the cookware items.

公开(公告)号：US20240389791A1

公开(公告)日：2024-11-28

申请号：US18671359

申请日：2024-05-22

Applicant: WHIRLPOOL CORPORATION

Inventor： Andrea Gallivanoni ,  Alan Phong Nguyen ,  Annalisa Pacioni

IPC: A47J36/32 ,  A47J36/24

Abstract: A system for controlling at least one cooking device includes a temperature sensing device that couples with a food item and control circuitry in communication with the temperature sensing device. The control circuitry is configured to receive temperature data corresponding to a temperature of the food item at a first time, determine a duration between the first time and a second time corresponding to the food item being at a target food temperature, determine an elapsed time for said at least one cooking device to generate a target heating temperature, compare the duration to the elapsed time, and communicate a first signal to activate said at least one cooking device based on the comparison of the duration to the elapsed time.

公开(公告)号：US20240200783A1

公开(公告)日：2024-06-20

申请号：US18506271

申请日：2023-11-10

Applicant: WHIRLPOOL CORPORATION

Inventor： Salvatore Baldo ,  Mario Barbati ,  Andrea Gallivanoni

IPC: F24C3/12 ,  F23N1/00

CPC classification number: F24C3/126 ,  F23N1/002 ,  F24C3/103

Abstract: A gas cooktop appliance includes a burner, a gas supply circuit in fluid communication with the burner, and a valve for controlling an amount of gas supplied to the burner from the gas supply circuit. An electrode is configured to provide an ignition spark and to obtain an ionization current. A control system is operably coupled with the valve and is configured to compare the ionization current to a setting of the valve and modify the amount of gas supplied to the burner when the difference between the ionization current and the setting of the valve is outside a predetermined threshold.

公开(公告)号：US11910509B2

公开(公告)日：2024-02-20

申请号：US17189724

申请日：2021-03-02

Applicant: WHIRLPOOL CORPORATION

Inventor： Andrea Gallivanoni ,  Cristiano Vito Pastore

IPC: H05B6/06 ,  F24C7/08

CPC classification number: H05B6/065 ,  F24C7/088

Abstract: A method is provided for controlling average power delivered to coils of a flexible induction cooktop having a plurality of coils that are arranged adjacent to one another in a non-overlapping manner to form an array. The method includes: a) identifying a group of the plurality of coils that are underlying one or more cookware items; b) providing power to at least one coil of the group of coils underlying one or more cookware items; and c) at the same time, not providing power to coils of the group of coils underlying the cookware items that are adjacent to the at least one coil to which power is provided to prevent interaction between adjacent coils of the group of coils.

公开(公告)号：US20230280040A1

公开(公告)日：2023-09-07

申请号：US18116470

申请日：2023-03-02

Applicant: WHIRLPOOL CORPORATION

Inventor： Alessandro Boccotti ,  Andrea Gallivanoni ,  Gaia Mannara ,  Annalisa Pacioni ,  Davide Parachini ,  Cristiano Vito Pastore

IPC: F24C7/08

CPC classification number: F24C7/083 ,  F24C7/087

Abstract: Operations such as adding food or flipping or otherwise manipulating food in an item of cookware being heated may be detected by comparing with a threshold the time derivative of a sensed temperature and/or of heating power absorbed by an item of cookware, wherein the heating power is provided by an induction cooktop operated in order to keep constant the temperature value sensed by the sensors coupled to the item of cookware.