Multiple-blower relative humidity controlled test chamber
US7043974B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2005 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Apr 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An accelerated weathering apparatus includes a test chamber (30), a specimen supporting means (34), a light source (60) powered by a power source controlled by a ballast, at least one chamber air temperature sensor (26), a black panel temperature sensor (36), and a multiple blower system and control means (52). A first blower (12) draws and circulates outside or fresh air and as second blower (46) optionally draws recirculated air into an air mixing duct. The speeds of the fresh air and recirculated air are independently regulated and controlled by a blower controller based on the chamber air temperature and black panel temperature, respectively. In addition, a humidifier (18) and humidity controller (20) regulates humidity within the system as required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.