Expansion valve
AssigneeTgk Co., Ltd.
InventorsHisatoshi Hirota, Shinji Saeki, Takeshi Kaneko, Takanao Kumakura
Life of this patent
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Abstract
An expansion valve is configured such that a shaft, a first valve, a second valve, a compression coil spring, and an adjustment screw are coaxially arranged within a body exactly below a power element, and the first valve and the second valve control the flow rate in an interlocked manner. A second valve seat of the second valve is press-fitted into the body, and an amount of press-fitting of the second valve seat into the body is adjusted such that when the first valve is in a closed state in which a first valve element is seated on a first valve seat, the second valve is in a closed state in which a second valve element is seated on the second valve seat.
Claims10
An expansion valve comprising a first valve having a first valve element and a first valve seat, a second valve having a second valve element and a second valve seat, and a power element configured to control lifts of the first valve element and the second valve element in an interlocked manner,
- wherein the second valve seat of the second valve is a movable valve seat which is adjustable in a direction toward or away from the second valve element.
Dependencies are inferred from the claim text.