Cross-flow dual valve and method of manufacturing housing of the cross-flow dual valve
AssigneeAzbil TA Co., Ltd.
InventorAkiyoshi Ooshima
Life of this patent
Estimating the term…
Abstract
A cross-flow dual valve has a supply path, an exit path, and first and second valve holes through which the supply path and the exit path communicate with each other. The cross-flow dual valve has a first intersecting path through which a supply path side of the first valve hole and an exit path side of the second valve hole communicate with each other. The cross-flow dual valve has a second intersecting path through which a supply path side of the second valve hole and an exit path side of the first valve hole communicate with each other. The cross-flow dual valve includes a first valve and a second valve. The first valve includes a first lower valve body and a first spool. The second valve includes a second lower valve body and a second spool.
Claims2
A cross-flow dual valve, comprising:
- a first valve;
- and
- a second valve,
- wherein the cross-flow dual valve has
- a supply path that extends in a first direction in a housing main body,
- an exit path that is spaced from the supply path in a second direction perpendicular to the first direction in the housing main body and that extends in the first direction in the housing main body,
- a first valve hole and a second valve hole which extend in the second direction and through which the supply path and the exit path communicate with each other,
- a first intersecting path through which a supply path side of the first valve hole and an exit path side of the second valve hole communicate with each other, and
- a second intersecting path through which a supply path side of the second valve hole and an exit path side of the first valve hole communicate with each other,
- wherein the first valve includes
- a first valve body that opens and closes an end portion of the first valve hole on the supply path side, and
- a first spool that opens and closes a first path which extends from the second intersecting path to the exit path through the first valve hole,
- wherein the second valve includes
- a second valve body that opens and closes an end portion of the second valve hole on the supply path side, and
- a second spool that opens and closes a second path which extends from the first intersecting path to the exit path through the second valve hole, and
- wherein the first intersecting path and the second intersecting path are formed by respective grooves and a lid, the grooves are provided in the housing main body such that the grooves are open in a direction intersecting the first direction and the second direction, and the lid is attached to the housing main body such that the lid closes opening portions of the grooves.
A method of manufacturing a housing of a cross-flow dual valve, the method comprising the steps of:
- molding a housing main body by casting;
- processing to form a first valve hole and a second valve hole in the housing main body by machining;
- and
- assembling to form the housing by attaching a plate-shaped lid to the housing main body,
- wherein the step of molding forms
- a supply path that extends in a first direction in the housing main body,
- an exit path that is spaced from the supply path in a second direction perpendicular to the first direction in the housing main body and that extends in the first direction in the housing main body,
- a first groove that is open in a direction perpendicular to the first direction and the second direction, that extends in the first direction, and that has one end portion positioned on a supply path side and another end portion positioned on an exit path side,
- a second groove that is open in the direction perpendicular to the first direction and the second direction, that extends in the first direction, and that has one end portion positioned on an exit path side and another end portion positioned on a supply path side, and
- wherein the step of processing forms
- a first valve hole that extends in the second direction in the housing main body so as to penetrate through the supply path and the exit path and that is connected to the one end portion of the first groove and the one end portion of the second groove, and
- a second valve hole that extends in the second direction in the housing main body so as to penetrate through the supply path and the exit path and that is connected to the other end portion of the first groove and the other end portion of the second groove, and
- wherein, in the step of assembling,
- the lid is attached to the housing main body such that the lid closes opening portions of the first groove and the second groove.
Dependencies are inferred from the claim text.