Cyclically liquid feeding apparatus
US8826732B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Mar 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1393
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An outer tank and an inner tank having liquid at different temperatures, and a load are connected to each other via outer and inner tank liquid circulating channels and a valve unit. A first opening-and-closing valve is connected to a first bypass flow-channel connecting an outer tank feed channel and an inner tank feedback channel, a second opening-and-closing valve is connected to a second bypass flow channel connecting an inner tank feed channel and an outer tank feedback channel to detect the liquid level of the liquid in the outer tank and the liquid level of the liquid in the inner tank by a liquid level sensor. The liquid levels are adjusted by selectively opening the first opening-and-closing valve and the second opening-and-closing valve when the liquid levels in both tanks become uneven in the process of cyclically feeding the liquid from the tanks to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.