Electric heating apparatus utilizing dual chambers for heating by convection
US5047786A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1990 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Jan 31, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H3/002
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Electric heating apparatus having at least one electrical heating resistor (24) arranged in a body (1) of sheet metal provided with an air inlet in its lower part and an air outlet in its upper part. The body (1) is formed by a double-walled hollow element in the form of a trough (2, 3) provided with end walls (14, 15) and at least one opening (12) for the entry of air and defining a first space (20) for the admission of air. The electrical resistor (24) is mounted on the concave part of the double-walled element in the form of a trough (2, 3) on the exterior of the latter. A perforated panel (30) is arranged on the concave wall and defines with the latter a second space (33) for the heating of the air by convection and for the direct radiation of the heat by the resistor through the perforations in the perforated panel. At least one opening (35, 36) is made in the hollow element (2, 3) in order to put the first and second spaces (20, 33) in communication, and at least one passage (31c) for the discharge of hot air is provided between the hollow element (2, 3) and a lateral edge of the perforated panel (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.