Title:
THROTTLE DEVICE AND REFRIGERATION CYCLE SYSTEM INCLUDING THE SAME
Document Type and Number:
Japanese Patent JP2017058081
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a throttle device capable of suppressing minute vibration of a valve body to a valve port of a valve seat, not only right after the valve body starts separating from the valve port of the valve seat and but also in a state where a separating distance becomes large.SOLUTION: A swollen part 20F of a needle member 20 has a flat surface 20Fa at a position separate from its center axis by a predetermined distance. Since pressure difference occurs around the swollen part 20F of the needle member 20 by the flat surface 20Fa after the needle member 20 starts moving, a part of an outer peripheral surface of a tapered part 20P is pressed against a part of a peripheral edge of a valve port 18P of a valve seat 18V in one direction along a radial direction.SELECTED DRAWING: Figure 1
Inventors:
TAKADA HIROMASA
Application Number:
JP2015183890A
Publication Date:
March 23, 2017
Filing Date:
September 17, 2015
Export Citation:
Assignee:
SAGINOMIYA SEISAKUSHO INC
International Classes:
F25B41/06; F16K17/30; F16K47/04
Domestic Patent References:
| JP2008138812A | 2008-06-19 | |||
| JP2006266667A | 2006-10-05 | |||
| JP2004142701A | 2004-05-20 | |||
| JP3515048B2 | 2004-04-05 |
Foreign References:
| WO2009104238A1 | 2009-08-27 | |||
| US6378328B1 | 2002-04-30 |
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office