Heat recovery ventilator with defrost
US7942193B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2008 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Dec 29, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/56
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A defrost system for a heat recovery ventilator/energy recovery ventilator (HRV/ERV), uses the interior space supply air of an integrated fan coil for defrosting a HRV/ERV core without creating negative pressure in the interior space, which wastes energy, without need of an external fifth port from which to draw defrost air from the interior space, which increases costs, and without re-circulating exhaust air into the interior space. During the defrost cycle, automatically controlled dampers close off the fresh air and exhaust air inputs, and exhaust output, and circulate supply air through the heat exchange core and into to the living space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.