公开(公告)号：US20190252147A1

公开(公告)日：2019-08-15

申请号：US16271385

申请日：2019-02-08

Applicant: LG ELECTRONICS INC.

Inventor： Heung Sik CHOI ,  Sung-Hun SIM

IPC: H01J23/54 ,  H01J25/54

Abstract: A magnetron includes a yoke, an upper magnet, an upper pole piece located at a lower side of the upper magnet, a fifth-harmonic-frequency choke located at an upper side of the upper pole piece, a third-harmonic-frequency at a lower side of the fifth-harmonic-frequency choke, a ceramic part located at an upper end of the fifth-harmonic-frequency choke and configured to output an electromagnetic wave including a plurality of frequencies, a fourth-harmonic-frequency choke that is bent inward from the ceramic part and that is welded to an upper end of the ceramic part, and a second-harmonic-frequency choke that is welded to the fourth-harmonic-frequency choke and that extends upward and downward along a heightwise direction. The third-harmonic-frequency choke, fifth-harmonic-frequency choke, and second-harmonic-frequency choke are configured to block harmonic frequencies of the electromagnetic wave.

公开(公告)号：US20230363568A1

公开(公告)日：2023-11-16

申请号：US18225940

申请日：2023-07-25

Applicant: LG ELECTRONICS INC.

Inventor： Hyo Jin AN ,  Young Min LEE ,  Heung Sik CHOI

IPC: A47J27/21 ,  G01G19/00 ,  G01H9/00 ,  F24C15/10 ,  F24C7/08 ,  G01G19/52 ,  A47J36/32

CPC classification number: A47J27/21158 ,  G01G19/00 ,  G01H9/008 ,  F24C15/105 ,  F24C7/087 ,  G01G19/52 ,  A47J36/321 ,  G01H17/00

Abstract: The present disclosure relates to an apparatus and a method for estimating a state of an object to be heated based on sound which is generated when the object to be heated is heated, and providing the estimated information to other devices in an Internet of Things (IoT) environment through a 5G communication network. The heating apparatus may include a housing having a receiving space therein, a heating member disposed within the housing, a power supplier for supplying power to the heating member, a top plate disposed on the top of the housing to support the object to be heated, a sound sensor disposed on the bottom of the top plate, and a controller for predicting the state of the object to be heated by using a deep neural network model that has been trained through machine learning based on a sound signal received from the sound sensor.

公开(公告)号：US20210015292A1

公开(公告)日：2021-01-21

申请号：US16674707

申请日：2019-11-05

Applicant: LG ELECTRONICS INC.

Inventor： Hyo Jin AN ,  Young Min LEE ,  Heung Sik CHOI

IPC: A47J27/21

Abstract: The present disclosure relates to an apparatus and a method for estimating a state of an object to be heated based on sound which is generated when the object to be heated is heated, and providing the estimated information to other devices in an Internet of Things (IoT) environment through a 5G communication network. The heating apparatus may include a housing having a receiving space therein, a heating member disposed within the housing, a power supplier for supplying power to the heating member, a top plate disposed on the top of the housing to support the object to be heated, a sound sensor disposed on the bottom of the top plate, and a controller for predicting the state of the object to be heated by using a deep neural network model that has been trained through machine learning based on a sound signal received from the sound sensor.