[특허]Automatic chemical analyzer

[미국특허] Automatic chemical analyzer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01N-021/24 G01N-001/14
출원번호	US-0949771 (1978-10-10)
우선권정보	JP-0139764 (1977-11-21)
발명자 / 주소	Suzuki Nobuyoshi (Hachioji JPX)
출원인 / 주소	Olympus Opitcal Co., Ltd. (Tokyo JPX 03)
인용정보	피인용 횟수 : 63 인용 특허 : 3

초록 ▼

An automatic chemical analyzer includes a rotary disc which is intermittently driven for rotation in a given direction and which is provided with a plurality of holders, each of which receives a reaction tube therein. The reaction tubes are disposed to move through an annular channel of a thermostat liquid vessel which maintains first reagent and a liquid sample to be examined, both injected into a reaction tube, at a given temperature. Second reagent is heated to a predetermined temperature before it is injected into the reaction tube. After the injection, the liquids are agitated to mix them together, and the resulting reaction solution is then subject to a colorimetric determination by an optical measuring instrument. Subsequently, the reaction solution is discarded, and rinse water which is previously heated to a given temperature is supplied to the tube for cleaning it.

대표청구항 ▼

An automatic chemical analyzer comprising: a reaction tube conveying rotary disc having a plurality of reaction tube holders disposed at equal intervals along a circle thereof; means for intermittently rotating said rotary disc in a single direction such that each of said reaction tube holders are sequentially stepped through a plurality of positions including a first reagent injection position, a sample injection position where a liquid sample to be examined is injected, a first agitating position, a second reagent injection position, a second agitating position, a reaction solution determining position, a reaction solution drain position and a reaction tube cleaning position; each of said reaction tube holders depending from said rotary disc and having light passing openings formed in its sidewall; a plurality of reaction tubes equal in number to the number of said reaction tube holders and formed of a transparent material, each of said reaction tubes being disposed in a respective said holder; a thermostat liquid vessel having an annular configuration in plan view and disposed below said rotary disc in alignment with the reaction tube holders in such a manner that said holders are disposed in and move through a thermostat liquid located in said liquid vessel; means for maintaining said thermostat liquid at a constant temperature; an auxiliary heater embedded in the wall of said thermostat liquid vessel at said determining position and close to the location of a reaction tube located at said determining position; openings formed in opposite walls of said thermostat liquid vessel at said determining position, said openings in said wall of said vessel communicating with the openings formed in said holders; a circulation pump for circulating said thermostat liquid through said vessel; an optical measuring instrument including a light emitter and light receiving detector which are disposed on opposite sides of said openings formed in said vessel walls; a first reagent injector for withdrawing a first reagent from a reagent container and injecting it into a reaction tube located at said first reagent injection position; a sample liquid injector for withdrawing a sample liquid from a sample container and injecting it into a reaction tube located at said sample injection position; a first agitator for agitating and mixing said first reagent and said sample liquid contained within a reaction tube located at said first agitating position; a second reagent injector for withdrawing a second reagent from a reagent container and injecting it into a reaction tube located at said second reagent injection position through a reagent heater; a second agitator for agitating and mixing said first reagent, said sample liquid and said second reagent which is contained in a reaction tube located at said second agitating position; a drain pump for draining the reacted reaction solution from a reaction tube located at said reaction solution drain position into a drainage tank; a rinse pump for injecting a heated rinse water into a reaction tube located at said drain position after said reaction solution has been drained therefrom, thus cleaning the interior of said tube; and another drain pump for draining a rinse water from within a reaction tube located at said reaction tube cleaning position to a drainage tank.

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[미국특허] Automatic chemical analyzer 원문보기

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