US 10,888,871 B2
Food waste disposer
Zhao Kong, Suzhou (CN); Fei Chen, Suzhou (CN); Ning Guo, Suzhou (CN); Guangyue Zhu, Suzhou (CN); and Jianyong Lu, Suzhou (CN)
Assigned to Skybest Electric Appliance (Suzhou) Co., Ltd., Suzhou (CN)
Filed by Skybest Electric Appliance (Suzhou) Co., Ltd., Suzhou (CN)
Filed on Mar. 29, 2018, as Appl. No. 15/940,819.
Claims priority of application No. 2017 1 1400146 (CN), filed on Dec. 22, 2017.
Prior Publication US 2019/0193087 A1, Jun. 27, 2019
Int. Cl. B02C 18/24 (2006.01); E03C 1/266 (2006.01); B02C 18/00 (2006.01); B02C 18/16 (2006.01)
CPC B02C 18/24 (2013.01) [B02C 18/0092 (2013.01); E03C 1/2665 (2013.01); B02C 2018/164 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A food waste disposer, comprising a food conveying section, a grind and discharge section and a motor section used for driving the grind and discharge section to execute a grinding process;
wherein the motor section comprises a universal motor, the universal motor comprises a control device for controlling a rotation speed of the universal motor, and the control device comprises a rectifier bridge circuit module for converting an AC power signal into a DC power signal;
wherein the control device further comprises a controller, a drive circuit, and a rotation speed detector, the rotation speed detector is connected with the controller and configured to transmit a detected rotation speed signal to the controller; the controller is connected with the drive circuit and configured to transmit different control signals to the drive circuit after perform judgment based on the detected rotation speed signal; and the drive circuit is configured to output corresponding power source voltage of different values to the universal motor, varied with the different control signals; and
the rotation speed detector comprises a sensing circuit, and the sensing circuit comprises a magnet ring coaxially configured on a motor shaft of the universal motor and an inductive element that coordinates with the magnet ring for detecting the rotation speed of the universal motor.