Title:
EXPANSION VALVE
Document Type and Number:
Japanese Patent JP2019163916
Kind Code:
A
Abstract:
To provide an improved expansion valve which can achieve lower noise while achieving low costs.SOLUTION: An expansion valve includes: a valve body 2 having an annular valve seat 20 which is disposed in a valve chamber VS connecting two passages 21, 22 and through which a fluid passes; a valve element 3 which is seated on the valve seat 20 to block passage of the fluid and separates from the valve seat 20 to allow the passage of the fluid; a coil spring 41 which biases the valve element 3 toward the valve seat 20; an operation rod 5 which presses the valve element 3 in a direction away from the valve seat 20 against biasing force generated by the coil spring 41; a valve element support 42; and a spring receiving member 43 including a bottom part 43a and an outer tubular part 43b extending from the bottom part 43a in an axial direction along an outer periphery of the coil spring 41. The valve element support 42 includes: a holding part which holds the valve element 3; and an inner cylindrical body 42b extending in the axial direction along an inner periphery of the coil spring 41. An end part of the inner cylindrical body 42b enters into the outer tubular part 43b.SELECTED DRAWING: Figure 2
Inventors:
MOGI TAKASHI
KUBOTA KOHEI
HAYAKAWA JUNYA
MATSUDA AKIRA
KUBOTA KOHEI
HAYAKAWA JUNYA
MATSUDA AKIRA
Application Number:
JP2018053011A
Publication Date:
September 26, 2019
Filing Date:
March 20, 2018
Export Citation:
Assignee:
FUJI KOKI KK
International Classes:
F25B41/06; B60H1/32; F16K15/18; F16K31/68; F16K47/02
Attorney, Agent or Firm:
Patent Business Corporation Daiichi International Patent Office