The disclosure provides an inflatable pump comprising an inflatable pump body, a plastic air cylinder and a plastic disc. A side of the inflatable pump body is provided with a bracket, the plastic air cylinder and the bracket are connected to each other through rotary joint protrusions and rotary joint holes, and the plastic disc is fastened to a top side of the plastic cylinder. By adopting the inflatable pump of the disclosure, the production and processing of the plastic air cylinder and the plastic disc is more convenient and will not cause environmental pollution. Meanwhile, the plastic air cylinder and the plastic disc can meet structural accuracy requirements of the inflatable pump. Furthermore, the plastic air cylinder and the bracket are connected to each other through rotary joint protrusions and rotary joint holes, no additional fasteners and assembly jigs are needed.

A linear compressor includes a mover which linearly reciprocates, a stator generating a driving force to allow the mover to linearly reciprocate and having a cylinder space formed on an inner circumferential surface thereof, a cylinder inserted into the cylinder space of the stator and having a compression space compressing a refrigerant, a piston reciprocating in an axial direction inside the cylinder, a frame provided on one side of the stator in an axial direction and supporting the stator in the axial direction, and a cylinder support member separated from the frame, provided between an inner circumferential surface of the stator and an outer circumferential surface of the cylinder, having one end fixed to the stator and the other end fixed to the cylinder, and supporting the cylinder with respect to the stator in the axial direction.

The packing seal for a piston compressor, having a longitudinal axis L as well as, following one after the other in the direction of the longitudinal axis L, a fastening part and a cylindrical part, wherein a magnetic bearing and at least one chamber ring with a sealing ring arranged therein are arranged following one after the other in the direction of the longitudinal axis L in the cylindrical part, wherein the magnetic bearing includes at least one controllable electromagnet.

A reciprocating piston machine for compressing a fluid, more particularly ambient air, for a compressed air system of a motor vehicle, includes a cylinder housing and a cylinder head constructed layer by layer and including a valve carrier element with an outlet valve, a chamber plate and a head plate with a pressure medium outlet. A cooling medium channel for cooling at least a partial region of the cylinder head and an outlet channel for connecting the outlet valve to the pressure medium outlet are provided and extend through components of the cylinder head, at least in portions. In order to improve the cooling, at least a partial portion of the cooling medium channel and a partial portion of the outlet channel are allocated to the cylinder housing.

A method of manufacturing a fluid end block for a high pressure reciprocating pump, including forming, from a single-piece forging of a steel alloy, a main body having an outwardly facing body forward face, an outwardly facing body rear face opposite the body forward face, and opposing side surfaces connecting the forward face and the rear face, and a plurality of chambers; forming a web portion protruding outwardly from the outwardly facing body forward face, the web portion having an outwardly facing web forward face and a curvilinear side surface; forming a plurality of bosses protruding from the web forward face and having a forward facing end; and forming a plunger bore extending through each of the plurality of bosses from the forward facing end of the respective boss to one of the plurality of chambers in the main body portion, each plunger bore configured to receive a reciprocating plunger.

A cover for an air compressor or pump includes a main plate body (12) having a first surface and a second surface opposite from the first surface, a plurality of external fins (18) that are formed on the first surface and protrude outwardly from the first surface, and a plurality of internal fins (42) that are arranged proximate the second surface and extend in a direction opposite to a direction in which the plurality of external fins extend. Heat from the air compressor or pump is received by the plurality of internal fins and flows through the main plate body, whereby a temperature of a fluid exiting the air compressor or pump is reduced.

A compressor is disclosed. The compressor compressing and discharging a refrigerant sucked into a cylinder includes a cylinder forming a compression space of the refrigerant and having a cylindrical shape; a piston configured to reciprocate in the cylinder along an axial direction and having a cylindrical shape; a suction valve disposed at a front of the piston; a plate disposed in a rear of the piston, the plate comprising a flow groove into which the refrigerant is sucked; and a rod extending along the axial direction, one end of the rod being disposed on the suction valve, and other end of the rod being disposed on the plate.

A fluid end assembly comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each section comprises a housing containing a reciprocating plunger. One and only one packing seal is installed within the housing and surrounds and engages an outer surface of the plunger. A retainer compresses and holds the packing seal within the housing. The retainer is secured to the housing using a clamp, such that no threads are formed in the housing of the fluid end section and no threads are formed in the retainer.

A motor assembly for compressing a fluid by causing a rotational shaft to reciprocate by providing a drive force to the rotational shaft, and a reciprocating compressor including a motor assembly are provided. The motor assembly may include a cylinder block in which a bore is formed and which is penetrated by the rotational shaft, a stator coupled to the cylinder block, a rotor installed at an outer circumferential surface of the stator so as to be rotated by the stator and which is coupled to the rotational shaft so as to rotate together with the rotational shaft, and at least one fastening member that fastens the stator and the cylinder block to each other such that the stator is supported by the cylinder block.

An air compressor includes a controller, a pump and an air storage tank. The pump is in communication with the air storage tank. A first air inlet and a first air outlet are provided on the pump. The pump is configured to pump an external air into the air storage tank. The controller is provided at the first air inlet of the pump, and is electrically connected with the pump. The controller is configured to control the operation of the pump. The external air is in contact with the controller, and enters the pump through the first air inlet and then flows out of the pump through the first air outlet, so as to realize a heat dissipation of the pump and the controller.