[특허]Magnetically driven centrifugal pump and means providing cooling fluid flow

Magnetically driven centrifugal pump and means providing cooling fluid flow 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-035/04 F04B-039/06 F01D-025/12
출원번호	US-0556325 (1975-03-07)
우선권정보	JA-0085377 (1974-07-18); JA-0085378 (1974-07-18)
발명자 / 주소	Oikawa Kunihiro (Niiza JA)
출원인 / 주소	Iwaki Co., Ltd. (Tokyo JA 03)
인용정보	피인용 횟수 : 64 인용 특허 : 0

초록 ▼

A magnetically driven centrifugal pump comprising an impeller rotatably supported in a casing by means of a hollow shaft; passage means including the through hole of said hollow shaft for conducting part of a fluid so as to cool said shaft; and an auxiliary pump for forcing the fluid through said passage means, thereby preventing the shaft from being thermally seized or damaged even when the discharge pressure of the pump suddenly drops.

대표청구항 ▼

A magnetically driven centrifugal pump comprising a casing defining a chamber therein and providing inlet and outlet means, an impeller rotatably arranged in the chamber and provided with a first magnet, an actuating member disposed outside of the casing so as to rotate concentrically with the impeller and provided with a second magnet, drive means for driving the actuating member to rotate the impeller by a magnetic force generated across the first and second magnets, first and second ring-shaped bearing members fixedly mounted on the inner wall of the casing behind and in front of the impeller, respectively, and a supporting shaft having a longitudinal hole extending therethrough and rotatably supported at its rear and front end portions on the inner peripheral walls of (by) said first and second bearing members, respectively, said impeller being fixed to the supporting shaft at a portion behind the front end portion thereof, said first and second bearing members respectively having first and second axial grooves in their inner peripheral walls (bearing surfaces), said first (and second) axial grooves communicating with the rear terminal opening (openings) of said longitudinal hole, (respectively,) said supporting shaft having at its front terminal surface at least one pumping groove which extends from the inner peripheral wall of the shaft to the outer peripheral wall thereof and has an opening opened at said outer peripheral wall, (connects the longitudinal hole of the shaft to the second axial groove of the second bearing member) the outer peripheral wall of the front end portion of the shaft being surrounded with the inner peripheral wall of the second bearing member so that, upon rotation of the shaft, the opening of the pumping groove intermittently communicates with the second axial grooves and means providing fluid communication between the outlet of the centrifugal pump and the first axial grooves.

이 특허를 인용한 특허 (64)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Magnetically driven centrifugal pump and means providing cooling fluid flow 원문보기

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Magnetically driven centrifugal pump and means providing cooling fluid flow 원문보기

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