Air conditioning equipment, fan equipment, method of reducing noise of equipment, pressure pulsation reducer for refrigeration cycle equipment, pressure pulsation reducer for pump equipment and method of reducing pressure pulsation of equipment
US7856837B2 · kind B2 · utility
3Cited by
7References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 26, 2003 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jun 27, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2500/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Air conditioning equipment that ensures sufficient noise reduction in the low frequency range of a few hundred hertz or below. The air conditioning equipment is characterized by including a heat exchanger for exchanging heat between air and refrigerant of a refrigeration cycle, a fan that supplies air to the heat exchanger, an air duct in which the fan is installed and through which acoustic waves are propagated, and a plurality of small holes that blows a jet into the air duct and sucks a jet from the air duct by a pressure difference between the blow side and the suction side of the fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.