Combined heater and pump
US5701388A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1994 |
| Grant date | Dec 23, 1997 |
| Priority date | — |
| Expiry date | Dec 22, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H1/0018
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A compact combined heater and pump is disclosed. There is a pump housing forming an internal pump chamber, the housing having both an inlet and an outlet and an opening therethrough. A drive shaft is rotatably mounted in the opening and is driven by a motor located outside the chamber. An impeller is mounted on the drive shaft within the housing and a heater is sandwiched in the chamber between the motor and impeller. Rotation of the shaft can draw liquid in from the inlet, past the heater and through the outlet. A cooling fan attached to the shaft for rotation therewith draws cooling air over control circuitry and then forces the air over the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.