Ventilation regulated hot air supplied constant temperature oven
US4954693A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 11, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Jul 11, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2019/0018
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A ventilation regulated hot air supplied constant temperature oven used for heat aging testing. Heated air of a predetermined temperature is supplied to a test oven body through an air supply port. Ventilation of the test oven is carried out through the air discharge port at a predetermined rate at predetermined time intervals. A discharge cylinder is provided at the discharge port, a blower is connected to the air supply port, a differential pressure detector is connected to the discharge cylinder and adapted to detect a differential pressure corresponding to the air flow rate on the basis of the data obtained in advance on the relation between a difference between the pressure at an outlet port of the blower and that at the discharge cylinder and the air flow rate, and a blower speed regulator is provided between the blower and the differential pressure detector and adapted to control the speed of the blower in accordance with an output level of a signal corresponding to a differential pressure measured by the differential pressure detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.