DISPENSING DEVICE

If trace dispensation is carried out while there are still adhered bubbles, the internal pressure of a flow path fluctuates as a result of variation in the volume of the bubbles, and because the amount of liquid that should be dispensed is inconsistent, dispensing accuracy decreases. Thus, a special...

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Bibliographische Detailangaben
Hauptverfasser:	YAMASHITA Yoshihiro, HAMASAKI Koshin
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS BLASTING CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIGHTING MEASURING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS TAPS TESTING THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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Beschreibung
Zusammenfassung:	If trace dispensation is carried out while there are still adhered bubbles, the internal pressure of a flow path fluctuates as a result of variation in the volume of the bubbles, and because the amount of liquid that should be dispensed is inconsistent, dispensing accuracy decreases. Thus, a special vibration mechanism for removing bubbles has been necessary. The purpose of the present invention is to make it possible to extremely simply reduce the amount of gas remaining within a fluid control valve by devising a method for fixing the fluid control valve and achieve highly accurate trace dispensation by simply removing gas. To achieve this purpose, a dispensing device is provided with a discharge nozzle, a liquid feeding tube that is disposed so as to connect a reagent bottle in which a reagent is stored and the discharge nozzle and forms a reagent flow path, and a fluid control valve that is disposed on the liquid feeding tube route connecting the reagent bottle and the discharge nozzle. The fluid control valve is provided with a reagent flow path having a liquid inlet and a liquid outlet and a diaphragm valve provided in the middle of the flow path. The fluid control valve is disposed in an orientation such that the diaphragm valve is disposed at the bottom of the flow path of the fluid control valve.