Title:
TEMPERATURE CONTROLLER WITH THERMAL PROTECTION
Document Type and Number:
WIPO Patent Application WO/2019/196641
Kind Code:
A1
Abstract:
Disclosed in the present application is a temperature controller with thermal protection, comprising an action unit and a thermal fuse device that are adjacent to each other and connected in series. The action unit comprises a movable contact device and a stationary contact device, the movable contact device comprises a bimetallic strip and a movable contact, the stationary contact device comprises a stationary contact adapted to be correspondingly in contact with the movable contact, the movable contact and the stationary contact are disconnected or connected under the action of the bimetallic strip, and the action temperature of the thermal fuse device is higher than that of the bimetallic strip. When a heavy current flows through a snap-action thermostat, the contacts are adhered together and the loop cannot be disconnected, an abnormal temperature rise is produced during contact adhesion, and because the contacts of the action unit and the fusible alloy of a fusing unit are located at the same conduction path, the heat transfer path is shortened, thermal diffusion is reduced, and the heat can quickly be transmitted to the fusible alloy in the same housing; fusible alloy is heated and shrinks to conductors at both sides under the tension of a fusing assistant agent, so that the loop is safely disconnected, and the circuit safety is effectively protected.
Inventors:
HONG YAOXIANG (CN)
Application Number:
PCT/CN2019/079721
Publication Date:
October 17, 2019
Filing Date:
March 26, 2019
Export Citation:
Assignee:
XIAMEN SET ELECTRONICS CO LTD (CN)
International Classes:
H01H37/32
Foreign References:
| CN208093449U | 2018-11-13 | |||
| CN101728121A | 2010-06-09 | |||
| CN101728121A | 2010-06-09 | |||
| CN204155843U | 2015-02-11 | |||
| CN106952779A | 2017-07-14 | |||
| US3934118A | 1976-01-20 | |||
| CN201820485602U | 2018-04-08 |
Other References:
See also references of EP 3751589A4
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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