Title:
THROTTLING DEVICE AND REFRIGERATION CYCLE
Document Type and Number:
WIPO Patent Application WO/2016/125514
Kind Code:
A1
Abstract:
In this throttling device (10) which reduces the pressure of the refrigerant condensed by the condenser in a refrigeration cycle and feeds said refrigerant to an evaporator, locking of a needle valve (4) due to foreign matter is prevented. A cylindrical main body case (1) configures a primary chamber (11) connected to the condenser and a secondary chamber (12) connected to the evaporator, and a valve seat member (2), in which a valve port (21) is formed, and a cylindrical guide member (3), which is integral with said valve seat member (2), are provided in the cylindrical main body case (1). In the guide member (3), a coil spring (6) is provided which biases towards the needle valve (4) and the valve port (21). A guide portion (42a) is provided in an insertion portion (42) of the needle valve (4). The guide portion (42a) and a cylindrical guide surface (31a) of the guide member (3) are brought into line contact with one another to guide the needle valve (4). Multiple sliding parts (S), which engage in said line contact, are provided, and foreign matter is flushed out with the areas between adjacent sliding parts (S) acting as introduction paths (45).
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Inventors:
TAKADA YASUMASA (JP)
TOYAMA YUICHIRO (JP)
YAGI SHINPEI (JP)
YOKOTA JUNICHI (JP)
TOYAMA YUICHIRO (JP)
YAGI SHINPEI (JP)
YOKOTA JUNICHI (JP)
Application Number:
PCT/JP2016/050151
Publication Date:
August 11, 2016
Filing Date:
January 05, 2016
Export Citation:
Assignee:
SAGINOMIYA SEISAKUSHO INC (JP)
International Classes:
F16K17/30; F25B41/06
Foreign References:
| JP2000120885A | 2000-04-28 | |||
| JP2005257203A | 2005-09-22 | |||
| US5901750A | 1999-05-11 |
Attorney, Agent or Firm:
TAKINO, Fumio et al. (JP)
Fumio Takino (JP)
Fumio Takino (JP)
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