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Patent Searching and Data


Title:
An iris diaphragm device and a frozen cycle
Document Type and Number:
Japanese Patent JP6231509
Kind Code:
B2
Abstract:
In a throttle device depressurizing and sending a refrigerant condensed by the condenser to the evaporator, hunting of a needle valve is prevented and hysteresis in differential pressure-flow rate characteristics in a high-pressure region is reduced. A valve seat member, in which a valve port is formed, and a cylindrical guide member, which is integral with the valve seat member, are provided in a cylindrical main body case configuring a primary chamber connected to the condenser and a secondary chamber connected to the evaporator. The needle valve and a coil spring energizing toward the valve port are provided in the guide member. A blade member is provided on a boss portion of the needle valve. A blade of the blade member abuts on a cylindrical guide surface of the guide member to apply sliding resistance.

Inventors:
Hiromasa Takada
Yuichiro Toyama
Yuki Shinpei
Junichi Yokota
Application Number:
JP2015018634A
Publication Date:
November 15, 2017
Filing Date:
February 02, 2015
Export Citation:
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Assignee:
Saginomiya Co., Ltd.
International Classes:
F16K47/02; F16K17/30; F25B41/06
Domestic Patent References:
JP2004218918A
JP2001082835A
Attorney, Agent or Firm:
Fumio Takino
Hideo Takino
Takao Kawasaki
Toshiaki Tsuda
Masashi Torino