Solar water heater
US6763826B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Apr 16, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Apr 16, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S126/909
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A solar water heater is provided. The heater features heat control so that a maximum temperature is automatically controlled. The heater is insulated to maintain a water temperature of water stored therein for long periods of time. The heater includes an insulated lens which transmits most solar radiation incident on its top surface through the lens. An air trap is located below the lens. A heat control valve opens the air trap to surrounding air when a maximum temperature for air within the air trap is exceeded. A heat absorption plate is located below the air trap. The plate is in contact with a heat transfer liquid within a liquid space below the plate. A heat exchanger is positioned within the space and routes water in heat transfer contact with the liquid within the space, while keeping the water isolated from the liquid within the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.