Pump unit with cooling jacket for electric motor
US5332369A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1992 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Jun 26, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K17/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump unit especially for heat producing and heat distributing plant has an electric motor having a rotor which is sealed against the fluid conveyed by the pump unit. The electric motor which is cooled by the conveyed fluid drives a rotary pump for controlling the speed of the unit. Part of the stream of the conveyed fluid which is diverted for cooling the electric motor and the frequency converter, flows through a cooling jacket which receives the motor. The frequency converter is attached to the outside of the cooling jacket in heat conducting relationship therewith and the frequency converter and the motor are received in a common housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.