Preheater for clothes dryer
US4875298A · kind A · utility
Inventor
Key dates
| Filing date | Oct 14, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Oct 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/18
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved preheater for a clothes dryer delivers hot exhausted air from a dryer through a loop of tubing within a box-like housing for heat exchange with ambient air drawn through the housing. Valving is provided for selectively drawing ambient air to the housing either from conditioned space near the dryer, or from solar-heated attic space. The hottest run of the tubing loop is located downstream in the ambient air flow. In one form the box has a flanged open front for attachment over an air inlet grate located in the rear of a dryer. In another form, the box is separated from the dryer and an adapter is used to carry the preheated air to an air inlet of a dryer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.