CLAW PUMP - ANEST IWATA CORP

Title:

CLAW PUMP

Document Type and Number:

WIPO Patent Application WO/2015/068693

Kind Code:

A1

Abstract:

　A claw pump has: a housing forming a pump chamber; two rotating shafts arranged parallel to each other inside the housing; a pair of rotors secured respectively to the two rotating shafts inside the housing, two or more hook-shaped pawls that mesh with each other without coming in contact being formed on each rotor; a rotation drive device for rotatably driving the pair of rotors; and an intake port and discharge port formed in a partition wall of the housing. The discharge port is configured of a first discharge port and a second discharge port formed respectively on side plates forming the axial-direction end surfaces of the rotating shafts of the housing, and formed in positions of being communicated with compression pockets each having one set of pawls formed therein. The claw pump is provided with a mechanism for opening and closing the first discharge port and the second discharge port. During one rotation of the pair of rotors, this opening/closing mechanism causes air in a compression pocket where at least one set of pawls are formed to be discharged through only the first discharge port, and causes air in a compression pocket where at least one other set of pawls are formed to be discharged through only the second discharge port.

Inventors:

MUTO RYUSUKE (JP)

Application Number:

PCT/JP2014/079237

Publication Date:

May 14, 2015

Filing Date:

November 04, 2014

Export Citation:

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Assignee:

ANEST IWATA CORP (JP)

International Classes:

F04C18/18; F04C29/12

Foreign References:

JP3168851U	2011-06-30
JPH06101673A	1994-04-12
US4324538A	1982-04-13
JP2011038476A	2011-02-24
JP2013076361A	2013-04-25

Other References: