Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature.

Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature.

The present invention relates to a hydrogen gas compression device. The hydrogen gas compression device according to an embodiment of the present invention is a hydrogen gas compression device for converting low-pressure hydrogen gas introduced into at least one compression chamber into high-pressure hydrogen gas and discharging the high-pressure hydrogen gas, the hydrogen gas compression device including: a pinion member which performs a rotating motion by a power unit; at least one rack member which has one end portion engaged with the pinion member and performs a reciprocating linear motion according to the rotating motion of the pinion member; at least one compression member which has a central portion connected to the other end portion of each of the at least one rack member and performs a reciprocating motion according to the reciprocating linear motion of each of the at least one rack member to reduce or enlarge the volume of each of the at least one compression chamber; and a housing that has at least one hole portion into which the at least one compression member is inserted in a reciprocable state, and forms the at least one compression chamber, into which the low-pressure hydrogen gas is introduced, in an area of the at least one hole portion on a front end portion side of each of the at least one compression member.

The present invention relates to a hydrogen gas compression device. The hydrogen gas compression device according to an embodiment of the present invention is a hydrogen gas compression device for converting low-pressure hydrogen gas introduced into at least one compression chamber into high-pressure hydrogen gas and discharging the high-pressure hydrogen gas, the hydrogen gas compression device including: a pinion member which performs a rotating motion by a power unit; at least one rack member which has one end portion engaged with the pinion member and performs a reciprocating linear motion according to the rotating motion of the pinion member; at least one compression member which has a central portion connected to the other end portion of each of the at least one rack member and performs a reciprocating motion according to the reciprocating linear motion of each of the at least one rack member to reduce or enlarge the volume of each of the at least one compression chamber; and a housing that has at least one hole portion into which the at least one compression member is inserted in a reciprocable state, and forms the at least one compression chamber, into which the low-pressure hydrogen gas is introduced, in an area of the at least one hole portion on a front end portion side of each of the at least one compression member.

A pumping system utilizes a linear actuator to move a shaft attached to two pistons within cylinders to pump a working fluid. A housing is designed with coolant passageways and one-way valves such that movement of the shaft also pumps coolant past cooling fins and over a motor. The shaft is formed of several sections joined by couplers which slide within a bore of the housing. The couplers have a non-round shape and the bore has a complimentary non-round cross section such that rotation of the shaft is prevented.

A pumping system utilizes a linear actuator to move a shaft attached to two pistons within cylinders to pump a working fluid. A housing is designed with coolant passageways and one-way valves such that movement of the shaft also pumps coolant past cooling fins and over a motor. The shaft is formed of several sections joined by couplers which slide within a bore of the housing. The couplers have a non-round shape and the bore has a complimentary non-round cross section such that rotation of the shaft is prevented.

A reciprocating-piston machine, in particular a two-stage or multi-stage piston compressor, includes: a first connecting rod for deflecting a first piston and which has a connecting-rod eye, the first connecting rod being a drive connecting rod; a second connecting rod for deflecting a second piston and which has at least one further connecting-rod eye, the second connecting rod being a follower connecting rod; a coupling element which extends through the connecting-rod eye and the at least one further connecting-rod eye and about which the first connecting rod and the second connecting rod are rotationally movable relative to one another; a coupling bearing element arranged between the coupling element and a connecting-rod eye inner surface of the connecting-rod eye; and a damping element with elastic damping action arranged in a damping annular chamber between the coupling bearing element and the connecting-rod eye inner surface of the connecting-rod eye.

Provided a household electric appliance with a high/low-pressure function, and the household electric appliance with a high/low-pressure function includes a high/low-pressure forming apparatus, where the high/low-pressure forming apparatus includes a movement apparatus, a pressure forming rod, a pressure forming body, a pressure forming shell and a valve, and the valve includes a pressure suction valve and a pressurization valve. A pressure-resistant shell, a build-in groove, a sealing apparatus and a pressure-resistant build-in door are disposed on a device on a high-pressure compartment or a low-pressure compartment of the household electric appliance. The high-pressure compartment or the low-pressure compartment of the household electric appliance with the high/low-pressure function is integrally provided with or coupled with the high/low-pressure forming apparatus through a high/low-pressure control valve and a pipe.

A reciprocating compressor 1A includes a compression part 2 compressing, by a piston 6, gas sucked into a cylinder 4 through a suction valve 36, and discharging the compressed gas through a discharge valve 51, a piston drive part 3 supplying a force to the piston 6 to reciprocate the piston 6 via a piston rod 9 coupled to the piston 6, and a housing 17 accommodating the compression part 2 and forming a vacuum region around the compression part 2.

Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature.