Boiler apparatus and method thereof
US11725849B2 · kind B2 · utility
0Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2022 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Oct 10, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24D2200/08
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An improved boiler apparatus having multiple resistive heating elements are provided with fixed resistances that can be rewired to allow dual voltage capability and at the same time, reduced watt density. For 120V operation, the large diameter 9-ohm coil is used alone to provide the lowest possible watt density. For 240V operation, all three heating coils are wired in series, creating a low watt density but high wattage heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.