Air trap for liquid circulation line
US6669762B2 · kind B2 · utility
2Cited by
21References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Feb 21, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D19/0031
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air trap comprises an air reservoir to be arranged in a liquid circulation line, and a hydrophilic filter which permits a liquid to permeate but does not permit gas bubbles to permeate, and which is arranged in the air reservoir to separate an upstream side of the liquid circulation line from the downstream side of the liquid circulation line. The filter has pores which meet conditions defined by equation: P<4h/d, where P represents a gas pressure, d is a diameter of the pores of the filter, and h is a surface tension of the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.