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Title:
FIXED VACUUM TYPE EVAPORATOR
Document Type and Number:
Japanese Patent JP3945014
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a fixed vacuum type evaporator capable of restricting longitudinal movement of a jet needle while attaining smooth lift characteristics of a vacuum operated valve regardless of the sectional shape of the vacuum operated valve, and which is capable of accurately maintaining an entirely open position over a long period of time.
SOLUTION: On the inside of a vacuum operated valve 4, a first guide hole 4C, a jet needle engaging step portion 4D, and a jet needle insertion hole 4E is provided. A spring seat 7 is provided with a jet needle support cylinder portion 7C on the inside thereof, and on the outside thereof is provided a spring engaging collar portion 7D. The spring seat 7 engages with a vacuum operated valve 4 via a diaphragm plate 6. The jet needle support cylinder portion 7C of the spring seat 7 is inserted within the first guide hole 4C such that longitudinal movement of the jet needle 8 is restricted. Also, the bottom end 12B of a vacuum operated valve return spring 12 installed compressed within a pressure chamber 11 is engaged with a spring engagement collar portion 7D of the spring seat 7.


Inventors:
Yanai, Yoichi
Application Number:
JP1998000136109
Publication Date:
July 18, 2007
Filing Date:
April 30, 1998
Export Citation:
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Assignee:
KEIHIN CORP
International Classes:
F02M7/17; (IPC1-7): F02M7/17
Domestic Patent References:
JP8021307A
JP60110655U
JP54121122U
Attorney, Agent or Firm:
池田 宏