A progressive sealing system for a reciprocating machine includes a pressure breaker having a first seal, and one or more additional seals between the pressure breaker and an end plate. One or more seal housings hold the seals between the first seal and the end plate. The end plate couples the progressive sealing system to a housing of a cylinder of the reciprocating machine such that a surface of the first seal faces a chamber of the cylinder. A housing for the second one of the seals includes a bore having an inner surface. The inner surface of the bore of the second seal housing and an outer surface of a rod of the reciprocating machine define an annular space when the rod is received in the bore. The packing case includes an expansion chamber adjoining the annular space.

The present disclosure relates to a compressor including a case, a compression unit provided inside the case, and a driving unit, wherein the compression unit includes a cylinder having a compression space, a piston reciprocating inside the cylinder, a discharge cover covering the compression space, a first plenum disposed inside the discharge cover and having a discharge space and a coupling space, a second plenum disposed inside the discharge cover and defining a movement channel through which refrigerant moves, a rib disposed in the movement channel, and a communicating portion through which the discharge space and the movement channel communicate with each other, wherein the refrigerant discharged from the compression space moves along the discharge space, the communicating portion, and the movement channel, whereby pulsation caused by the discharge of the refrigerant can be reduced.

A motor and pumping system which provides for high volume, low pressure, low cost, and ease of assembly as a breathing air supply such as for a submerged diver. The integration of the necessary elements gives rise to a unique ability to eliminate costly and complex motor bearings and simplify the motor design by reducing number of magnetic poles and electrical control elements which would traditionally be required to control the multiple poles of an electromechanical machine.

A reciprocating pump includes a frame for a power end, a skid support structure integrally formed at a base of the power end frame to provide proper support and rigidity for the pump power end, where the integral skid support structure has a plurality of struts forming a series of chambers.

A compressor comprises a first cylinder for compressing a fluid and a second cylinder for driving a piston in the first cylinder. The first cylinder comprises a chamber with first and second ends. The piston is reciprocally movable along an axial direction of the chamber for compressing a fluid. Three or more first ports at the first end include at least one first inlet port and at least one first outlet port. Three or more second ports at the second end include at least one second inlet port and at least one second outlet port. Each port has an axial direction parallel to the axial direction of the chamber. A check valve is connected inline with each port along the axial direction of the port.

A module for a vacuum pumping and/or abatement system. The module comprises a frame defining a space, a plurality of facilities inputs configured to receive facilities from a facilities supply, a plurality of facilities outputs configured to output the received facilities out of the module, and a plurality of facilities connection lines located at least partially within the space defined by the frame. The plurality of facilities connection lines connect the facilities inputs to the facilities outputs. The module further comprises a controller configured to control supply of facilities received at the facilities inputs out of the facilities outputs; and control operation of one or more vacuum pumping and/or abatement apparatuses remote from the module.

A linear compressor of the present invention comprises: a shell having a suction portion; a cylinder disposed in the shell and forming a compression space for a refrigerant; a piston arranged to axially reciprocate in the cylinder; and a spring device for inducing a resonant motion of the piston, wherein the spring device comprises a spring, a first supporter to which one side of the spring is connected and which moves together with the piston, and a second supporter to which the other side of the spring is connected, and each of the supporters has a coupling groove for fitting the spring therein.

A linear compressor of the present invention comprises: a shell having a suction portion; a cylinder disposed in the shell and forming a compression space for a refrigerant; a piston arranged to axially reciprocate in the cylinder; and a spring device for inducing a resonant motion of the piston, wherein the spring device comprises a spring, a first supporter to which one side of the spring is connected and which moves together with the piston, and a second supporter to which the other side of the spring is connected, and each of the supporters has a coupling groove for fitting the spring therein.

An air compression device has a housing, a compressor device for the compression of air, an electric motor for driving the compressor device and for generating an air flow within the housing, a transmission for mechanically connecting the electric motor to the compressor device, and a power supply at least for supplying the electric motor with power. At least sections of the compressor device, the electric motor, the transmission, and the power supply are arranged in the housing. The air compression device also includes an air guide device which guides the air flow from the power supply to the compressor device and the electric motor using the transmission, wherein at least sections of the air guide device are arranged within the housing.

An air compression device includes: a compressor device for the compression of air, wherein the compressor device has a compressor axis and the compressor axis is defined by a direction in which air is compressed by the compressor device; an electric motor for driving the compressor device, wherein the electric motor has an electric motor axis formed by an axis of rotation of the electric motor; and a transmission that mechanically connects the electric motor to the compressor device. The transmission arranges the compressor device and the electric motor at an angle to one another, and the compressor axis and the electric motor axis enclose an angle between 10° and 80°, in particular 20° and 70°, more specifically 30° and 60°.