Air warmer
US12146507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2017 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Feb 22, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/1272
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An air blower has an inlet muffler and an outlet muffler to reduce the noise of the air blower during operation. Each of the mufflers may have two sections. One section is configured to attenuate high frequency noise and the other section is configured to attenuate lower frequency noise. A tubular internal wall in each of the mufflers defines the through passage for each of the mufflers. A noise absorbent material may be fitted about the tubular wall within each muffler. A plurality of holes are formed along the tubular wall of each through passage to expose the through passage to the noise absorbent material. A heater plenum may be interposed between the blower plenum and the outlet muffler to heat the air from the blower plenum. A filter at the input muffler filters the air sucked into the air blower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.