Automatic analyzer
US11360112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2017 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Jan 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/0437
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A cleaning water flow velocity during nozzle cleaning is momentarily changed by using a pressure changing mechanism, for example, a syringe. That is, after the start of cleaning, a solenoid valve is opened, and an aspirating operation of the syringe is momentarily performed by a fixed amount in a state where a flow of cleaning water in a nozzle is developed, whereby a nozzle flow velocity is momentarily decelerated. Immediately thereafter, the syringe is pushed back to a home position again, and the flow velocity in the nozzle is accelerated again. A cleaning effect can be improved by performing transition of velocity distribution to various states. Flow velocity control by the pressure changing mechanism can be realized without inhibiting a dispensing cycle, and the cleaning effect of the nozzle can be improved without changing the pressure of a liquid feeding pump or extending the cleaning time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.