A valve plate assembly for a compressor according to the principles of the present disclosure includes a valve plate and a suction valve retainer. The valve plate is configured to separate suction-pressure working fluid entering a cylinder of the compressor from discharge-pressure working fluid exiting the cylinder of the compressor. The valve plate defines a discharge valve seat. The suction valve retainer is configured to retain a suction valve within a suction valve seat disposed about a central longitudinal axis of the cylinder.

A linear compressor includes a linear motor including a mover that reciprocates with respect to a stator; a compression unit configured to define a compression space in a cylinder while a piston connected to the mover reciprocates in the cylinder; a frame disposed outside of the cylinder; a plurality of discharge covers that define discharge spaces sequentially receiving refrigerant discharged from the compression space; and a gas bearing configured to guide part of refrigerant accommodated in a discharge any one of the plurality of discharge covers to lubricate between the cylinder and the piston with the refrigerant. The discharge cover structure is configured to restrict heat transfer between the discharge covers and the frame.

A compressor is disclosed. The compressor compressing and discharging a refrigerant sucked inside a cylinder includes a frame configured to support the cylinder, and a discharge cover assembly disposed in front of the frame. A gas layer is formed between the discharge cover assembly and the frame.

A pump includes a pump head and a motor assembly including a motor. The motor engages the pump head and actuates the pump head. The pump includes a hand actuatable quick disconnect assembly coupling the pump head to the motor assembly without the need for tools. A pump monitoring system acquires data and information to detect problems and provide information for pump maintenance.

A reciprocating compressor includes a cylinder including a cylindrical cylinder portion and a cylinder head portion provided on one side of the cylinder portion, and a piston mechanism reciprocably fittedly inserted on an inner peripheral side of the cylinder portion and including a piston defining a compression chamber and a non-compression chamber. A bottomed hole-shaped valve body housing portion is formed at the cylinder head portion. The valve body housing portion is opened to a piston side facing the piston in an axial direction of the cylinder portion. Further, a discharge valve unit and a valve holding member are provided in the valve body housing portion. The discharge valve unit is inserted in the valve body housing portion. The valve holding member holds the discharge valve unit in the valve body housing portion, and includes a communication hole establishing communication between the valve body housing portion and the compression chamber.

A linear compressor includes a frame, a cylinder disposed in the frame, a piston disposed in the cylinder and configured to reciprocate relative to the cylinder along an axis of the cylinder, a discharge valve disposed forward relative to the piston, and a discharge cover assembly coupled to the frame and disposed forward relative to the piston. The discharge cover assembly includes a discharge cover forming an inner space, a first discharge plenum disposed in the discharge cover and configured to partition the inner space into a plurality of discharge spaces, and a second discharge plenum disposed forward relative to the first discharge plenum and being in close contact with an inner surface of the discharge cover.

A fluid end of a reciprocating pump assembly includes a cylinder, a cover, and a valve stop. The cylinder has a fluid inlet, a fluid outlet, and an access side wall comprising an access wall inner surface that defines an access opening. The access opening provides access to an inner area of the cylinder and has an access opening axis. The cover is positioned in the access opening and forms a seal with the access wall inner surface along the access opening. The cover includes a cover axis coaxial with the access opening axis. The valve stop is positioned partially in the fluid inlet and includes a spring retainer and a column portion. The column portion includes a flange positioned between the cover and the access wall inner surface. The flange is in the shape of an arc.

A compressor includes: a cylinder main body; a valve block; a cylinder head; a first seal group composed of a plurality of seal parts; and a second seal group composed of a plurality of seal parts. The valve block includes a guide-out flow passage which opens between the seal parts composing the first seal group and opens between the seal parts composing the second seal group. The guide-out flow passage is linked to an outer pipe for conveying a leaked gas from a compression chamber to a predetermined place.

A cylinder head cover for a coolant compressor, wherein the cylinder head cover is attachable to a cylinder head arrangement in order to form a hollow space for receiving a coolant compressed by the piston, wherein the cylinder head arrangement comprises a valve plate attached to the cylinder housing and having an outlet opening and an outlet valve, which closes the outlet opening in cycles and consists of a valve spring and a stop plate for delimiting an opening movement of the valve spring. In order to achieve a cost-efficient production and installation of the cylinder head cover while assuring a secure support of the stop plate, it is provided that the cylinder head cover can comprise at least two contact surfaces for supporting stop plates of different outlet valves in order to adjust different opening positions of the valve springs of the different outlet valves.

A compressor may include a casing having a refrigerant inlet space therein that communicates with a suction pipe through which a refrigerant is suctioned into the casing; a high/low pressure separation plate that crosses an upper portion of a compression unit to partition the refrigerant inlet space positioned at a lower portion of the high/low pressure separation plate and a refrigerant discharge space positioned at an upper portion thereof; and a discharge guide. The discharge guide may be provided in the refrigerant discharge space and may be coupled with an upper surface of the high/low pressure separation plate to cover a communication hole of the high/low pressure separation plate that provides communication between the refrigerant inlet space and the refrigerant discharge space and at least a portion thereof may extend to a discharge pipe.