Noise filter, outdoor unit and air conditioner
US7498895B2 · kind B2 · utility
1Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2003 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Aug 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2017/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A noise filter eliminates noise generated by a noise generating source in an outdoor unit in an air conditioner. Power is supplied from a power source to an indoor unit via the outdoor unit. A choke coil is formed by winding power source lines and indoor/outdoor lines inter unit lines around a common magnetic body. The number of turns of the power source lines and that of the indoor/outdoor lines are preferably set so as to be almost proportional to their impedances. Due to this arrangement, noises of the lines can be cancelled while maintaining balance of influences on the magnetic field of the choke coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.