Energy efficient circulation system for spas and hot tubs
US8011032B2 · kind B2 · utility
17Cited by
13References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2007 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Jun 10, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H2201/5082
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for circulating water in a bathing installation with a water circulation flow path and a tub for holding bathing water is described. A pump is submerged in a chamber in the circulation flow path so that the pump when operated provides a positive pump pressure to pump water through the circulation flow path from an inlet opening to an outlet opening. Thermal contact is provided between a pump housing surface and water in the chamber to allow heat transfer between the pump housing surface and water in the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.