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US 10,385,836 B2Granted
Reciprocating compressor and hydrogen supply system
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsAtsuo Okaichi, Mio Furui
Life of this patent
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Abstract
A reciprocating compressor of the disclosure includes a cylinder, a piston, a space for compressing gas, a discharge port for discharging the compressed gas from the space, a discharge valve, and a supplying port for supplying liquid that is different in kind from the gas. The cylinder has an axis extending in a direction of gravity. The piston is disposed to be reciprocable along the axis inside the cylinder. The space is constituted above the piston by being surrounded by the piston and an inner peripheral surface of the cylinder. The inner peripheral surface of the cylinder includes a straight portion and a throttle portion. The throttle portion is constituted such that an inner diameter of the cylinder decreases toward the discharge valve.
Claims9
A reciprocating compressor comprising:
- a cylinder having an axis in a gravity direction that is an axis direction of the cylinder;
- a piston disposed to be reciprocable along the axis inside the cylinder;
- the piston and the cylinder constitute a space such that gas is compressed therein, and the space is present above the piston and surrounded by the piston and an inner peripheral surface of the cylinder;
- a discharge port that discharges the gas compressed in the space, the discharge port being disposed above the space;
- a discharge valve disposed above the discharge port, the discharge valve being open when the gas is discharged through the discharge port;
- and
- a supplying port disposed above the piston for supplying liquid that is different in kind from the gas to the space such that the liquid is held in a predetermined amount in the space during operation,
- wherein the inner peripheral surface of the cylinder includes a straight portion and a throttle portion, the straight portion extending in parallel to the axis direction from a bottom dead center of the piston to a specific position disposed above a top dead center of the piston and below the discharge port, and the throttle portion constituted such that an inner diameter of the cylinder decreases from the specific position toward the discharge valve in the axis direction,
- wherein the discharge port is disposed inside the inner diameter of the cylinder when viewed from the axis direction,
- wherein the reciprocating compressor further comprises:
- an intake port disposed above the piston for supplying the gas to be compressed in the space to the space;
- and
- a suction valve disposed below the intake port, the suction valve being open when the gas is supplied to the space through the intake port,
- wherein the suction valve is disposed between the top dead center of the piston and the discharge port in the axis direction, and
- wherein the intake port serves the supplying port.
12 more elements
A hydrogen supply system comprising:
- reciprocating compressor comprising:
- a cylinder having an axis in a gravity direction that is an axis direction of the cylinder;
- a piston disposed to be reciprocable along the axis inside the cylinder;
- the piston and the cylinder constitute a space such that gas is compressed therein, and the space is present above the piston and surrounded by the piston and an inner peripheral surface of the cylinder;
- a discharge port that discharges the gas compressed in the space, the discharge port being disposed above the space;
- a discharge valve disposed above the discharge port, the discharge valve being open when the gas is discharged through the discharge port;
- and
- a supplying port disposed above the piston for supplying liquid that is different in kind from the gas to the space such that the liquid is held in a predetermined amount in the space during operation,
- wherein the inner peripheral surface of the cylinder includes a straight portion and a throttle portion, the straight portion extending in parallel to the axis direction from a bottom dead center of the piston to a specific position disposed above a top dead center of the piston and below the discharge port, and the throttle portion constituted such that an inner diameter of the cylinder decreases from the specific position toward the discharge valve in the axis direction, and
- wherein the discharge port is disposed inside the inner diameter of the cylinder when viewed from the axis direction,
- wherein the reciprocating compressor uses hydrogen as the gas and uses water as the liquid;
- a hydrogen production apparatus which reforms hydrocarbon gas and produces supply gas containing hydrogen to be supplied to the space of the reciprocating compressor;
- and
- one of a cooler which cools the supply gas and condenses vapor included in the supply gas and a water supply channel for supplying water such that liquid water is mixed in a flow of the supply gas flowing toward the space of the reciprocating compressor.
11 more elements
Dependencies are inferred from the claim text.