Method and apparatus for heating a fluid
US4308636A · kind A · utility
Inventor
Key dates
| Filing date | Sep 25, 1978 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Sep 25, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/108
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Method and apparatus for heating a fluid, such as water, for any of several purposes, such as for use with carpet cleaning apparatus; and charcterized by supplying electrical current periodically to the primary of a conductive coil, thereby building and collapsing a field about a shorted electrically conductive secondary of the coil. The shorted secondary is a hollow conductor that is heated by high current flow. The heat is transferred to a fluid flowing through the hot, shorted secondary. In a specific aspect of the embodiment, a frame including spray nozzles, vacuum nozzles and the like has the apparatus for heating water connected into it such that heated water is supplied, to effect much more efficacious cleaning of carpets or similar floor surfaces. Also disclosed are specific details and preferred embodiments that have been constructed to date; particularly, the details of the apparatus in which the primary and the secondary coils are closely adjacent each other such that the I.sup.2 R heating that occurs in both the primary and secondary due to the building and collapsing of the field contribute to heating of the fluid passed through the fluid passageway in the secondary wi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.