Liquid delivery device and fluid chromatograph
US11098702B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2017 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Aug 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/326
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid delivery device includes a pump head having a pump chamber provided in the inside, a plunger whose tip is slidably inserted into the pump chamber, and at least one plunger pump having a drive mechanism that reciprocates the plunger in its axial direction. Then, at least one of the plunger pumps is a pressurizing pump that pressurizes a mobile phase including a compressible fluid sucked into the pump chamber and then discharges the mobile phase from the pump chamber, and at least the pump head of the pressurizing pump includes a cooling part that is connected to an outlet channel from the pump chamber, and allows the pump head to absorb heat of the mobile phase discharged from the pump chamber to cool the mobile phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.