Device for dissipating heat and cutting off power of a pump
US6503061B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jun 26, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/93
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A heat dissipating and power cutting-off device of a pump has a heat dissipating ceramics ring fitted in a plastic member to form watertight connection in between to prevent water from flowing to a motor. The plastic member has a pivotal hole for a main blade wheel connected to a shaft of the motor, and for a shaft seal tightly fitted in same and said ceramics ring. The ring has an annular trench forming between on outer and an inner annular portions for increasing contact area with water so that heat passing through said ring can be dissipated to prevent plastic member from getting melted by said heat. A power cutting-off member is connected to the motor, and has a sensing element abutting the ceramics ring to sense a temperature of same for activation of the cutting-off member when a racing of the motor occurs to cause temperature of both the motor and the ring to rise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.