Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTROMAGNETIC LOCK UNLOCKING CIRCUIT AND LAUNDRY TREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/068974
Kind Code:
A1
Abstract:
An electromagnetic lock unlocking circuit and a laundry treatment device, which aim to solve the technical problem of how to unlock, when a laundry treatment device or a power grid to which the laundry treatment device is connected fails, an electromagnetic lock that is locked on a door body in the laundry treatment device. With regard to this aim, the unlocking circuit is provided with a switch power supply (11), a switch control circuit (13) and a charging and discharging circuit (12), wherein when a control power supply of an electromagnetic lock (3) is cut off, the switch power supply (11) outputs electric energy to a control circuit of the electromagnetic lock (3) by means of the switch control circuit (13), such that the electromagnetic lock control circuit (2) is powered on and then unlocks the electromagnetic lock (3). Therefore, when the control power supply is cut off and the electromagnetic lock (3) is in a locked state, the automatic unlocking of the electromagnetic lock (3) is realized. In addition, under the discharging control of the charging and discharging circuit (12), the switch control circuit (13) can transmit the electric energy output by the switch power supply (11) to the electromagnetic lock control circuit (2), and by means of adjusting the discharging time of the charging and discharging circuit (12), a delay time for unlocking the electromagnetic lock (3) is adjusted.

More Like This:
WO/2021/044279FRONT LOAD WASHING MACHINE WITH AN ELECTRIC LIGHT BODY
JP7273986A washer door assembly and a drum washer with a washer door assembly
Inventors:
LI ZUNREN (CN)
LV YANG (CN)
GAO QIUYING (CN)
CHENG LONG (CN)
ZHAO MIN (CN)
Application Number:
PCT/CN2021/131668
Publication Date:
April 07, 2022
Filing Date:
November 19, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
QINGDAO HAIER WASHING MACH CO (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
D06F39/14; E05B47/00
Foreign References:
CN208053127U2018-11-06
CN109423808A2019-03-05
CN108952347A2018-12-07
CN110014963A2019-07-16
CN208400234U2019-01-18
US20120169453A12012-07-05
JP2003224968A2003-08-08
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: DRYING CONTROL METHOD OF DRYING SYSTEM

Next Patent: HIGH-TEMPERATURE STEAMING METHOD, COMPUTER-READABLE STORAGE MEDIUM AND CONTROL APPARATUS