Electric heater and electric heating system
US12209773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2022 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Dec 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric heater for a fluid comprises a plurality of electrically conductive tubes arranged in a bundle for resistive heating having an axial extension, electrical connectors arranged between the tubes. The electric heater is configured for the fluid to flow through the bundle in direct contact with inner and outer surfaces of the tubes. Each of the tubes has an outer diameter within a range of 6-40 mm and an outer diameter to wall thickness ratio within a range of 5-15 or within a range of 7-12. A ratio between a total cross-sectional surface area in between the tubes and a total cross-sectional area inside the tubes lies within a range of −10% to +30% or within a range of −5% to +25% of a ratio between the outer and inner diameters of one tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.