Method and apparatus for regulating the size and frequency of bubbles employed for mixing liquids
US4136970A · kind A · utility
17Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Dec 15, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F33/406
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A few large, fast rising gas bubbles are generated near the bottom of a sample container and the upward movement of the bubbles causes a mixing action of the sample. The bubbles result from the periodic injection of discrete quantums of gas into the bottom of the container. The volume of a discrete gas quantum determines the size of a resulting bubble. Both the volume and frequency of generation of the quantums of gas are controlled by a timing circuit which operates a solenoid valve that permits each discrete quantum of gas to pass into the sample container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.