The present disclosure relates to a reciprocating compressor and a method for assembling the same. According to an embodiment of the present disclosure, a reciprocating compressor includes: a shell to which a discharge pipe is coupled; a driving unit mounted inside the shell to generate a rotary force; a compression unit having a connecting rod configured to convert the rotary force to a straight driving force, a piston connected to the connecting rod, and a cylinder into which the piston is movably inserted; a discharge hose from which a refrigerant compressed in the cylinder is discharged, and disposed to abut an inner circumferential surface of the shell; and a connection member configured to connect the discharge hose to the discharge pipe, wherein at least a portion of the connection member is inserted into an inner portion of the discharge pipe, and another portion thereof is supported outside the discharge pipe.

A wool-like fiber member that has high permeability and low absorbability is disposed around a discharge port of a discharge pipe that is configured to discharge condensate and compressed air stored within a tank.

A mechanism for limiting vibration amplitudes in a pumping system includes a plurality of pendulum absorbers coupled with a carrier and each having a pivoting range. The pendulum absorbers each further include a first and a second contact surface that contacts an outer peripheral surface of the carrier at limit stop positions, and each having a shape that is conforming with a shape of the outer peripheral surface. The pumping system may be used for pumping liquid nitrogen.

A sound reducing device, comprising multiple channels for air as a gas to split and induce turbulences and vortices upon reintegrating back of the split gas to the main flow stream, to drop pressure and reduce the air released velocity to the atmosphere and bring down noise to decibels to an acceptable human operating environment.

A linear compressor includes a casing, a back cover supported in the casing, an intake flow path member coupled to the back cover, and an intake muffler of which at least a portion linearly reciprocates inside the intake flow path member. The intake flow path member includes a first hole that is formed in a front surface and is penetrated by the intake muffler, and a flow path guide that extends axially forward from a rear surface and has an opened front and an opened rear. A noise of a refrigerant passing through the intake flow path member can be reduced through an expansion space between the flow path guide and an inner surface of the intake flow path member.

A silencer device for acoustic suppression may include a first housing section; and a second housing section detachably connected to the first housing section. The first housing section may define a first baffle chamber and the second housing section defines a second baffle chamber. The silencer device may include a baffle device positioned within the first baffle chamber and the second baffle chamber.

Various embodiments may include a high-pressure fuel pump with: a pump housing including a pressure chamber and a pump piston movable up and down within the pressure chamber along a movement axis; and a low-pressure damper including a damper volume arranged on the pump housing and damper elements distributed symmetrically around a damper longitudinal axis. The damper longitudinal axis is arranged at an angle of between 5 and 175 in relation to the movement axis.

A diaphragm pump (10) including a body (11) that provides a pair of opposed pump chambers (12) and (13). Mounted in the body (11) is a piston assembly (14) providing a pair of pistons (15) joined by a transverse piston rod (16) so that the pistons (15) are caused to reciprocate in unison linearly in the direction (17) along the axis (18). Each piston (15) includes a diaphragm (22) that provides a first sub-chamber (23) and a second sub-chamber (24). A working fluid (liquid or gas) under pressure is alternately delivered to the sub-chambers (23) to cause the piston assembly (14) to reciprocate. A valve (25) is operated to co-ordinate delivery of the fluid under pressure or alternately to the first sub-chambers (23).

A miniature gas transportation device includes a gas outlet plate, a resonance plate, a piezoelectric actuator and a covering member. The gas outlet plate includes a gas outlet pipe, a gas outlet hole and plural protrusion structures. The gas outlet pipe is disposed on a first surface of the gas outlet plate. The gas outlet hole is formed in the gas outlet pipe and runs through the gas outlet plate to output gas from the miniature gas transportation device. The plural protrusion structures are disposed on a second surface of the gas outlet plate. A space between every two adjacent protrusion structures of the plural protrusion structures is defined as a vent portion. The piezoelectric actuator includes a suspension plate, an outer frame, a bracket and a piezoelectric element. The bracket is arranged between the suspension plate and the outer frame. The piezoelectric element is attached on the suspension plate.

An air-operated pump, such as an air-operated diaphragm pump, includes a pump body, a process liquid pathway defined at least in part by the pump body, and an air pathway defined at least in part by the pump body, where the process liquid pathway and air pathway are fluidly separated from one another within the pump body. The pump further includes a leak detection and containment assembly integrated with the pump body and having a process liquid sensor configured to sense process liquid leaked from the process liquid pathway into the air pathway, and a shutoff valve communicatively coupled to the process liquid sensor and configured to close in response to the process liquid sensor sensing a process liquid leak to contain the leaked process liquid within the pump body and the assembly.