Vehicular air conditioning system
US11164558B2 · kind B2 · utility
0Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2017 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | May 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicular air conditioning system includes an air conditioner case, a blower configured to blow an air to an internal air flow path of the air conditioner case, a microphone provided in the internal air flow path on a downstream side of the blower and configured to detect noise, and a speaker configured to output sound waves having a phase opposite to a phase of the noise detected by the microphone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.