US Patent No. 10,462,857

MICROWAVE HEATING DEVICE


Patent No. 10,462,857
Issue Date October 29, 2019
Title Microwave Heating Device
Inventorship Jianyi Zhou, Foshan (CN)
Yongzhong Zhang, Foshan (CN)
Jian Long, Foshan (CN)
Bi Zhou, Foshan (CN)
Assignee GUANGDONG MIDEA KITCHEN APPLIANCES MANUFACTURING CO., LTD., Foshan (CN) MI...

Claim of US Patent No. 10,462,857

1. A microwave heating device, comprising:an oven body defining a microwave heating chamber therein and provided with a door opening detection switch and a door closing detection switch;
a drawer door provided with a door opening touch configuration and a door closing touch configuration, installed on the oven body and movable between an open position in which the microwave heating chamber is opened and a closed position in which the microwave heating chamber is closed, wherein when the drawer door is in the open position, the door opening touch configuration touches the door opening detection switch and the door closing touch configuration releases the door closing detection switch; when the drawer door is in the closed position, the door closing touch configuration touches the door closing detection switch and the door opening touch configuration releases the door opening detection switch;
a driving device configured to drive the drawer door to move between the open position and the closed position, installed on one of the oven body and the drawer door and connected with the other one of the oven body and the drawer door in a drive way; and
a controller configured to communicate with the door opening detection switch, the door closing detection switch and the driving device,
wherein the door closing detection switch comprises a monitoring switch and a first primary switch disposed at a left side of the oven body, and a secondary switch and a second primary switch disposed at a right side of the oven body,
wherein the door closing touch configuration comprises left door closing touch configuration disposed at a left side of the drawer door and right door closing touch configuration disposed at a right side of the drawer door,
wherein when the drawer door is in the closed position, the left door closing touch configuration touches the monitoring switch followed by the first primary switch, and concomitantly, the right door closing touch configuration touches the secondary switch followed by the second primary switch, thereby sending feedback signal from the door closing detection switch to the controller, and wherein the controller receives the feedback signal that the drawer door is closed in place and communicates with the driving device to stop working,
wherein when the drawer door is in the open position, the left door closing touch configuration releases the monitoring switch followed by the first primary switch, and concomitantly, the right door closing touch configuration releases the secondary switch followed by the second primary switch, until the door opening touch configuration touches the door opening detection switch thereby sending feedback signal from the door opening detection switch to the controller, and wherein the controller receives the feedback signal that the drawer door is opened in place and communicates with the driving device to stop working,
wherein a guiding rail is disposed on the oven body, a guiding rail connection plate is disposed on the drawer door, and the guiding rail connection plate is movably fitted with the guiding rail;
wherein the door opening touch configuration is configured as a position limiting block disposed at the guiding rail connection plate, and the door closing touch configuration is configured as a door hook disposed at the drawer door.