Abstract: A valve assembly of a close-type reciprocal compressor. The valve assembly includes a valve plate disposed between a cylinder body and a cylinder head, a reed valve for opening and sealing a refrigerant discharge hole formed at the valve plate, a first stopper for resisting against a bending force of the reed valve bent when the refrigerant is discharged, a second stopper for resisting against a bending force of the first stopper by the reed valve, a keeper for limiting bending degree of the second stopper by the first stopper, and a bolt engaged with the keeper for connecting with the stopper bent by the reed valve. When refrigerant discharge pressure is increased, the resisting force against the bending force is added by the first stopper and the second stopper in turn, and thus compressing efficiency is increased by changing opening degree of the reed valve corresponding to the change of the pressure, and at the same time, noise can be reduced by lessening shock added to the reed valve.

Abstract: A reed valve having a plate shaped support substrate with a valve hole formed in a central section passing through in a plate thickness direction is provided. A flexible plate-shaped reed covering the valve hole at one surface of the support substrate and having one end in a longitudinal direction that is fixed to the support substrate. The support substrate has a rib extending along a center line in a longitudinal direction of the inside of the valve hole, to divide the valve hole into two spaces. A surface of the rib opposite to the reed is positioned on substantially the same plane as a surface of the support substrate to which the rib is attached, and is adjacent to the reed.

Abstract: A high efficient valve assembly of a compressor has a valve plate having more than one discharging valve; a discharging valve for opening and closing the discharging valve, one end of the discharging valve is settled at the valve plate between the valve plate and a cylinder head; a stopper for controlling the discharging valve to be placed at a right position, both ends of the stopper are settled at the valve plate at an upper part of the discharging valve; a rivet for settling the discharging valve and the stopper at the valve plate; and settlement units for positioning the discharging valve at the valve plate at the right position and supporting the discharging valve. According to the present invention, the high efficient valve assembly has the discharging settlement units capable of settling the discharging valve of which only one end is supported and supporting the discharging valve, thus the assemble of the valve assembly can be easily done.

Abstract: The valve assembly includes a valve plate having a refrigerant discharging hole, a discharging valve having one end that is settled at the valve plate for opening and closing the refrigerant discharging hole, a keeper, placed at above the discharging valve, having one end that is connected with the valve plate with the discharging valve for limiting lift of the discharging valve, and a bead protruded for a predetermined width W and height H at a lower side of the keeper. The lift L of the discharging valve can be maintained evenly, since the bead compresses an upper side of the discharging valve. Moreover, the discharging valve is firmly settled at the valve plate. Accordingly, abnormal noise generated when refrigerant is discharged can be reduced because the discharging valve operates with stability.

Abstract: A valve apparatus for a hermetic compressor including a valve plate having a refrigerant discharging hole for discharging a refrigerant, a discharging valve having one end fixed at the valve plate and another end for opening and closing the refrigerant discharging hole, a stopper having one end fixed at the valve plate in order to support the discharging valve, a keeper disposed at an upper part of the stopper at a predetermined distance from the stopper and fixed at the valve plate, a first shock absorbing means for buffering an opening and a closing of the stopper by being disposed at the keeper, and a second shock absorbing means disposed at the keeper in order to move up and down. The second shock absorbing means is for buffering the opening and the closing of the stopper together with the first shock absorbing means.

Abstract: A valve assembly for a hermetic compressor in accordance with the present invention includes a cylinder head installed to an opened end of a cylinder having a specific space filled with a fluid and having a suction hole and a discharge hole, a suction valve fixed to a certain surface of the cylinder head and opening/closing the suction hole, a discharge valve fixed to the other surface of the cylinder head and opening/closing the discharge hole and a head cover fixed to the surface of the cylinder head and having a suction space at which a fluid is sucked and a discharge space at which a fluid is discharged.

Abstract: A check valve is provided and has a housing having inlet and outlet openings and comprising two essentially planar plate portions. A thin steel plate that acts as a valve is disposed between the plate portions. Under the effective pressure, the valve opens in one direction and blocks flow in the opposite direction. The valve has at least one valve tongue, and the plate portions in the valve are fixedly connected together. One of the plate portions is associated with the discharge zone and in the vicinity of the valve tongue is provided with at least one arched portion for limiting opening of the valve tongue. The other plate portion has bores through which the exhaust gas can enter under overpressure.

Abstract: A reed valve includes a vibration suppressing member for suppressing transmission of vibration, caused due to opening and closing operations of a reed piece, to a fixed mounting portion of an engine part to which the reed valve is mounted. The vibration suppressing member includes an elastic annular projection formed on at least one of an outer peripheral surface of a gasket fitted around an outer peripheral edge of a valve plate and a pair of upper and lower surfaces of the gasket. The elastic annular projection is elastically engaged with the fixed mounting portion when the mount portion of the valve plate is mounted to the fixed mounting portion.

Abstract: A refrigerant compressor has a member forming a compression chamber with a discharge port and a discharge reed valve. The reed valve has a valve cover portion at one end for opening and closing the discharge port and a portion at another end that is fixed to the member. A valve restricting plate is fixed to the member forming the compression chamber together with the fixed portion of the discharge valve so as to overlie the reed valve and to restrict the opening amount of the reed valve cover portion. The valve restricting plate has a head portion wider than a middle portion thereof which head portion opposes the valve cover portion of the discharge valve against which it can come into contact A through hole or notch is provided in the restricting plate head portion to provide back pressure flow communication that acts on the cover portion of the reed valve to prevent it from sticking to the valve restricting plate.

Abstract: A refrigerant compressor includes a front housing, a cylinder block, a rear housing, and a valve plate positioned between the cylinder block and the rear housing, in which the valve plate has a suction hole formed therethrough. The compressor also includes a suction chamber and a suction valve reed formed on the valve plate. The compressor further includes a limiting recess formed within an end of the cylinder block adapted to receive the suction valve reed. The limiting recess includes an arced segment intersecting a center axis of the suction valve reed. Moreover, the portion of the arced segment which intersects the center axis of the suction valve reed has a corresponding tangential line at the point of intersection which forms an oblique angle relative to the center axis of the suction valve reed.

Abstract: A reed valve includes a generally wedge shaped reed cage or block defining a fluid flow passage and having substantially coplanar discharge ports. A reed is mounted at a common hinge end to the reed cage and has a plurality of petals each of which overlies a corresponding one of the ports. The petals have predetermined edge profiles to establish different transverse widths at their hinge axes so that the petals overlying outer low pressure zones in the reed cage lift from their port closing positions at a lower fluid pressure than the petals that overlie higher pressure zones in the reed cage, thereby providing multiple stage lifting and reflex action by the reed petals relative to the reed cage ports.

Abstract: A compressor includes a particularly shaped discharge valve which extends into the discharge port. The shaped valve includes a convex portion on the seat side of the valve which extends downwardly into the discharge port. The shaped valve furthermore includes a concave portion on the seat side of the valve that begins where the convex portion ends. The beginning of the concave portion on the seat side of the valve is located so as to prevent flow separation of the refrigerant when flowing along the convex portion of the valve as it leaves the compression chamber of the compressor.

Abstract: A non-return valve for a fuel tank, the valve comprising a substantially tubular body and a deformable shutter member fixed to said body, said shutter member being formed integrally by molding a plastics material and being shaped in such a manner as to return under its own elasticity into a shut position, with the valve body serving as a seat, whenever the shutter member is at rest and the pressure of fuel is no longer sufficient to overcome the elastic return action of the shutter member.

Abstract: A reciprocating piston machine (1) with at least one inlet and/or outlet valve that has a strip, tongue or lamella shaped closing member (5). The opening movements (8) of the closing member (5) are limited through a stroke restrictor (6) assigned to each valve. The stroke restrictor (6) has or defines at least one ventilation hole (8) inside the contact area of the closing member (5). This ventilation hole (8) prevents the formation of air cushions (7) between the closing member (5) and the corresponding stroke restrictor (6) effectively. In the absence of the ventilation hole (8), the air cushion (7) can limit the opening movements of the closing member (5) prematurely, which in turn could lead to the generation of additional noise.

Abstract: In its unstressed state, a suction valve is spaced from its valve seat such that the suction valve must be deformed against its inherent spring force in order to achieve seating. The spring force due to deformation provides an opening bias to the suction valve such that it opens earlier in the suction stroke and offsets the effects of adhesion due to the presence of oil between the seating surface and the valve.

Abstract: A high efficient valve assembly of a compressor has a valve plate having more than one discharging valve; a discharging valve for opening and closing the discharging valve, one end of the discharging valve is settled at the valve plate between the valve plate and a cylinder head; a stopper for controlling the discharging valve to be placed at a right position, both ends of the stopper are settled at the valve plate at an upper part of the discharging valve; a rivet for settling the discharging valve and the stopper at the valve plate; and settlement units for positioning the discharging valve at the valve plate at the right position and supporting the discharging valve. According to the present invention, the high efficient valve assembly has the discharging settlement units capable of settling the discharging valve of which only one end is supported and supporting the discharging valve, thus the assemble of the valve assembly can be easily done.

Abstract: A valve assembly (9) comprising a reed (11), a port (13) which is opened and closed by the reed (11), and damper means (15) for the reed (11), the damper means (15) comprising a tube which is in communication with the port (13) on a side of the port (13) remote from the reed (11), and the tube being of such a size that, in use of the valve assembly (9), the tube contains sufficient fluid to provide substantial damping for the reed (11).

Abstract: A hermetic compressor includes a compressing chamber and a valve plate forming suction and discharge ports communicating with the chamber. A discharge valve has one end fixed to the valve plae and a free end that is flexible to open and close the discharge port. A discharge backer has one end fixed to the valve plate and is positioned to limit the opening movement of the discharge valve. The discharge backer includes integral protrusions projecting toward the discharge valve. One of the projections is in constant contact with the discharge valve and forms a fulcrum therefor.

Abstract: A compressor valve comprising at least one valve port opening and a flexible valve member located over the at least one valve port for controlling gas flow therethrough, wherein the compressor valve is adapted to cause elements of the valve member to vibrate at least substantially out of phase during operation of the compressor valve.

Abstract: The valve assembly includes a valve plate having a refrigerant discharging hole, a discharging valve having one end that is settled at the valve plate for opening and closing the refrigerant discharging hole, a keeper, placed at above the discharging valve, having one end that is connected with the valve plate with the discharging valve for limiting lift of the discharging valve, and a bead protruded for a predetermined width W and height H at a lower side of the keeper. The lift L of the discharging valve can be maintained evenly, since the bead compresses an upper side of the discharging valve. Moreover, the discharging valve is firmly settled at the valve plate. Accordingly, abnormal noise generated when refrigerant is discharged can be reduced because the discharging valve operates with stability.

Abstract: Between a cylinder block and a housing, there is disposed a valve base plate. The valve base plate is formed with mutually isolated first and second intake openings for fluidly communicating each of piston chambers in the cylinder block with an intake chamber defined in the housing. A reed valve element is incorporated with each piston chamber. The reed valve element is arranged to open the first and second intake openings with the aid of a fluid when the piston is moved away from the reed valve element and close the first and second intake openings with the aid of the fluid when the piston is moved toward the reed valve element. Due to provision of the two, viz., first and second intake openings, opening movement of the reed valve element is carried out along with a twisting motion of the same.

Abstract: A suction port as a fluid port of a piston type compressor is contoured with reference to a middle line passing through a middle point of a maximum length of the suction port in the longitudinal direction of the suction valve and perpendicularly crossing a reference line extending in the longitudinal direction. The middle line divides the suction port into a first section positioned on the proximal end side and a second section positioned on the distal end side. An area of the second section is greater than an area of the first section. A width increasing region is disposed in which the width of the suction port becomes gradually greater from the proximal end side to the distal end side, and the length of the width increasing region occupies a major part of the maximum length of the suction port.

Abstract: A valve assembly of a close-type reciprocal compressor. The valve assembly includes a valve plate disposed between a cylinder body and a cylinder head, a reed valve for opening and sealing a refrigerant discharge hole formed at the valve plate, a first stopper for resisting against a bending force of the reed valve bent when the refrigerant is discharged, a second stopper for resisting against a bending force of the first stopper by the reed valve, a keeper for limiting bending degree of the second stopper by the first stopper, and a bolt engaged with the keeper for connecting with the stopper bent by the reed valve. When refrigerant discharge pressure is increased, the resisting force against the bending force is added by the first stopper and the second stopper in turn, and thus compressing efficiency is increased by changing opening degree of the reed valve corresponding to the change of the pressure, and at the same time, noise can be reduced by lessening shock added to the reed valve.

Abstract: A suction port of a piston type compressor is formed in the shape similar to a portion of a sector with an apex portion of the sector removed. A distal end portion of a suction valve which can open and close the suction port has a contour line including a distal end forming line extending generally parallel to a distal end line of the suction port, and side lines. A gap between the distal end line of the suction port and the distal end forming line of the suction valve is substantially constant, and a gap between the distal end forming line and the circle of the cylinder bore is substantially constant. The ease of the inflow of a gas when the gas is sucked from the suction port to the cylinder bore is improved.

Abstract: The seat of a suction valve of a reciprocating compressor is modified to limit the radial extent and thereby the area in which an annular oil film can be established between the valve and the valve seat. The preferred radial extent of the seating surface is 0.014 to 0.018 inches and the preferred ratio of the area of the suction valve seat to the passage therethrough is in the range of 13% to 25%.

Abstract: In the present compressor, a retainer is prevented from being deformed without impairing the sealing performance of a metal gasket provided between a covering member for closing a compression chamber of a cylinder block assembly and a discharge valve forming plate. A discharge valve forming plate is provided between a valve plate having at least one discharge port through which a fluid compressed in a compression chamber of a cylinder block assembly is discharged into a discharge chamber of a housing and the cylinder block assembly. A retainer for restricting the magnitude of opening of a discharge valve is integrally formed in a metal gasket which is provided between the discharge valve forming plate and the housing. The housing is provided with a restricting section at a position corresponding to a proximal portion of a rising portion of the retainer for restricting the proximal portion of the top surface of a rising portion.

Abstract: A reed valve includes a vibration suppressing member for suppressing transmission of vibration, caused due to opening and closing operations of a reed piece, to a fixed mounting portion of an engine part to which the reed valve is mounted. The vibration suppressing member includes an elastic annular projection formed on at least one of an outer peripheral surface of a gasket fitted around an outer peripheral edge of a valve plate and a pair of upper and lower surfaces of the gasket. The elastic annular projection is elastically engaged with the fixed mounting portion when the mount portion of the valve plate is mounted to the fixed mounting portion.

Abstract: A check valve is provided and has a housing having inlet and outlet openings and comprising two essentially planar plate portions. A thin steel plate that acts as a valve is disposed between the plate portions. Under the effective pressure, the valve opens in one direction and blocks flow in the opposite direction. The valve has at least one valve tongue, and the plate portions in the valve are fixedly connected together. One of the plate portions is associated with the discharge zone and in the vicinity of the valve tongue is provided with at least one arched portion for limiting opening of the valve tongue. The other plate portion has bores through which the exhaust gas can enter under overpressure.

Abstract: A piston-type compressor has a cylinder block in which two or more compression chambers each permits a piston to reciprocate, so as to compress a refrigerant drawn into the cylinders from a suction chamber. The suction chamber is formed in an cylinder head and communicates fluidly with the cylinders through suction ports in a valve plate. Each of the suction ports is opened and closed by a suction reed valve. Each cylinder also has a valve stop portion and recess constructed for stopping movement of the suction reed valve when the valve reaches the open position separated from the valve plate. The valve stop construction includes a concave portion which enlarges an effective passage area thereof, and a stop portion which restricts the bending amplitude of the reed valve to an appropriate degree and is surrounded by the concave portion. By this structure, excess stress to the reed valve may be avoided and the noise and the vibration of the reed valve may be suppressed simultaneously.

Abstract: An improved floor drain for buildings, basements, exterior paved areas, and the like. The invention provides floor drain assemblies and floor drains providing improved drainage performance, particularly where drainage is an irregular occurrence, and having unprecedented simplicity and reliability. Floor drains according to the invention comprise side port drain valves adapted for disposition within floor drains, the drain valves generally comprising non-horizontal drain ports, one or more sealing surfaces disposed between the ports and a drain conduit, a stop adapted for sealing engagement of the sealing surface, and means to urge the stop into sealing engagement of the sealing surface. Floating, spring-loaded, or flexible elastic valves stops, among others, may be used; any of them may be tailored for opening under a selected hydrostatic pressure.

Abstract: Discharge holes and suction holes having shapes that suppress the turbulence of a refrigerant gas flow are disclosed. The shape of the discharge hole according to the present invention has a tapered surface wall, such that the circumference of the discharge hole increases from the piston cylinder surface to the discharge chamber surface. Similarly, the shape of the suction hole according to the present invention has a tapered surface wall such that the circumference of the suction hole increases from the suction chamber surface to the piston cylinder surface. The present invention allows the flow path of the refrigerant gas to flow approximately tangential to the valve reed by providing a tapered surface wall. The flow resistance of the discharge hole or the suction hole is reduced such that the volume efficiency of the compressor is improved and compressor noise is suppressed.

Abstract: A compressor (10) for a vehicular air conditioning system includes a cylinder block (12) having a bore (14). A piston (78) is slidingly received in the bore (14). A cylinder head (16) is mounted on the cylinder block (12) and includes a suction chamber (20) and a discharge chamber (22). A valve plate (18) is provided between cylinder block (12) and the cylinder head (16). The valve plate (18) includes a suction port (26) and a discharge port (35). A suction valve (28) cooperates with the suction port (26) to permit refrigerant to enter the bore (14) from the suction chamber (20). The suction valve (28) includes a terminating portion (28A) and a flexing portion (28B). A recess (32) is formed in the cylinder block (12) adjacent the flexing portion (28B) of the suction valve (28). The recess (32) provides a linear clamping line (C) on the suction valve (28) between the valve plate (18) and the cylinder block (12).

Abstract: A pressure valve for a compressor, in particular a hermetically encapsulated small-size refrigerating machine, comprising the following elements: a valve plate (33), a cylinder cover (40)comprising a substantially quadrangular base plate with cylinder walls formed thereon, with the valve plate (33) and the cylinder cover (40) being mutually connected by means of fastening elements, and with a seal (58) arranged in between and a valve spring (23) arranged in the volume enclosed by the valve plate (33) and the cylinder lid (40), a substantially U-shaped holding-down element (21) with pins and legs taking the squaring and, optionally, a damper element (27), with the valve spring, the damper element and the holding-down element being arranged in this sequence above the valve seat.

Abstract: The seat of a suction valve of a reciprocating compressor is modified to limit the area in which an annular oil film can be established between the valve and the valve seat. The seat is configured to limit the oil film from 3% to 33% of the total inlet port opening. In a modified embodiment gas at discharge pressure exerts an opening bias to the suction valve at the end of the discharge stroke.

Abstract: A reed valve for opening and closing an intake passage of an engine includes a valve body having a valve hole and a valve seat, and a reed piece made of a resin. The reed piece has a base end of which is supported by the valve body so as to be seated on a valve seat surface of the valve seat. An elongated member is formed on the valve body so as to extend across the valve hole. The outer surface of the elongated member lies in a plane including the valve seat surface. According to the present invention having the above described structure, bending deformation of the reed piece at the closed state can be deterred.

Abstract: A compressor includes a normally open discharge valve assembly for controlling compressed refrigerant flow from the discharge chamber through the compression members. This controlling of flow results in an increased performance for the compressor by reducing recompression volume and the elimination of reverse rotation at shut down. The discharge valve assembly includes a valve seat, a valve plate and a valve stop secured within a recess formed within the compressor. The valve stop and the valve seat include a contoured surface which is engaged by the valve plate when it opens and closes. The contoured surface control the movement of the valve plate.

Abstract: In a reciprocating compressor in which a suction valve (21) of a leaf valve is placed between a valve plate (16) and a cylinder block (12) to open and close a suction port (18) formed in the valve plate, the suction valve is previously bent to open the suction port in an initial state when the compressor is stopped. The cylinder block has a cylinder bore (11) with which the suction port is communicated and into which a piston (17) is inserted. When the piston performs reciprocating movement in the cylinder bore, the suction valve opens and closes the suction port in response to the reciprocating movement in a pulsation reducing manner.

Abstract: A control valve of a hydraulic coupling controls pumping through a casing inlet port by a hydraulic pump and/or through a casing outlet port to control coupling between two rotary members such as by operation of a clutch. The casing is connected to one of the rotary members while a pumping component embodied by an impeller is connected to the other rotary member and meshed with an internal ring gear having one more tooth than the number of impeller teeth to provide sufficient pumping capacity so that the pump can act as a brake while still having relatively constant pumping pressure. The control valve includes a valve system through which pressurized hydraulic fluid selectively flows to control the coupling of the pair of rotary members. The instant invention provides a thin-plate check valve and pressure port stack which creates a hydraulic flow path for a gerotor pump and maintains pressure equalization about the gerotor pump.

Abstract: A bi-directional filter has a pair of flapper-type check valve assemblies 20, 21 for directing fluid flow unidirectionally through a centrally supported molded desiccant core 22. Each check valve assembly is a three part structure spot-welded into a unitary assembly having a centering support plate, a core support cup and an intermediate flapper valve plate. A depth-type filter media circumferentially surrounds the desiccant core and extends between the check valve assembly on either end of the core for providing filtering for the fluid prior to entering the molded desiccant core. A depth-type filter media 80, 81 is also provided at each axial end of the core for providing fine filtration of the fluid after the fluid has passed through the core. The outer filter media is arranged to allow a portion of fluid therein to bypass the desiccant core.

Abstract: A compressor includes a cylinder block and a housing connected to the ends of the cylinder block. A suction chamber and a discharge chamber are defined in the housing, respectively, and the chambers are divided by a bulkhead, or wall. A valve plate, which has a discharge port for connecting the cylinder bores with the discharge chamber, is positioned between the cylinder block and the housing. A discharge valve is provided for selectively opening and closing the discharge port. A gasket is positioned between the housing and the valve plate, and the gasket is held to the bulkhead. The gasket has a bulkhead seal portion, which is between the bulkhead and the valve plate for sealing between the discharge chamber and the suction chamber, and a protruding portion, which protrudes radially beyond the bulkhead, extending along and contacting the valve plate.

Abstract: In scroll-type fluid apparatus in which a flap valve is provided to face a discharge port for discharging a fluid, the flap valve has a bridging portion which is between a supporting portion and a closing portion and has a narrow part narrower than the supporting and the closing portions. The supporting portion is fixed to the apparatus. The closing portion faces the discharge port. A scroll-type transferring mechanism is coupled to the discharge port and transfers the fluid towards the discharge port to discharge the fluid through the discharge port.

Abstract: A refrigerant compressor, for compressing a refrigerant gas and delivering the compressed refrigerant gas toward an external refrigerating system, which has at least a rear housing provided with a rear discharge chamber defined by a partition wall and a rear discharge valve assembly including a rear discharge valve element and a rear retainer element coated with a rubber material, the partition wall having an endmost first end surface holding a base portion of the rear discharge valve element and a base end portion of the rear retainer element, a tapered surface portion extending toward a rear direction from the endmost first end surface, and a second end surface extending from the rear end of the tapered side surface to be parallel with the first end surface, the tapered surface portion and the second end surface defining a cavity and a support portion to prevent an uncontrolled deformation of controlling portions of the retainer element which control an amount of opening of the valve portions of the rear di

Abstract: A valve assembly has a discharge valve member and a suction valve member. One of these valve members includes a reed valve. The reed valve has a tab which is secured to the valve plate by drive studs prior to assembly of the valve assembly to the compressor. The drive studs include a first set of ridges along the shank of the stud to create an interference with the bore in the valve plate. This eliminates the need to access both sides of the stud to secure the stud. The drive studs included a second set of ridges on the surface of the head which contacts the reed valve. A portion of these ridges extend into the mounting hole in the reed valve and a portion of these ridges are compressed during assembly of the stud. These second set of ridges permit the correct positioning of the reed valve to eliminate build tolerances and the retention of this properly positioned reed valve during assembly of the valve assembly to the compressor.

Abstract: A compressor includes a normally open discharge valve assembly for controlling compressed refrigerant flow from the discharge chamber through the compression members. This controlling of flow results in an increased performance for the compressor by reducing recompression volume and the elimination of reverse rotation at shut down. The discharge valve assembly includes a valve seat, a valve plate and a valve stop secured within a recess formed within the compressor. The valve stop and the valve seat include a contoured surface which is engaged by the valve plate when it opens and closes. The contoured surface control the movement of the valve plate.

Abstract: A reed valve is disclosed for use with a pump having a casing. A check valve unit is provided within the casing for preventing counterflow of fluids to be carried. A suction port communicates with a suction line into which the fluids to be carried flow, and a discharge port communicates with discharge line from which the fluids to be carried out are discharged. Reed valves are mounted on the suction port and on the discharge port of the check valve, respectively, in such a manner that the reed valves cover the suction port and the discharge port so as to be able to open and close. Each reed valve includes a first reed valve and second reed valve. The first reed valve is made of pliable material, and is formed to have a size capable of covering the entire respective suction port and discharge port. The second reed valve is smaller than first reed valve and is superposed on the first reed valve to engage the first reed valve such that the first reed valve can open and close, while enhancing sealability thereof.

Abstract: In addition to seating on its valve seat during the combined compression and discharge stroke, the suction valve seats on the structure associated with the valve seat which has at least one shallow recessed area. In seating on its valve seat, the suction valve seats on the structure defining the shallow recesses to trap fluid therein. The recesses serve to reduce the area available for adhesion and the trapped fluid pressure provides an opening bias to the suction valve. If necessary, or desired, restricted communication between the compression chamber and the shallow recess can take place to provide a higher pressure in the recess at the time of transition from discharge to suction.

Abstract: A spring must be engaged and deformed by the suction valve in order for the suction valve to seat. The spring provides an opening bias to the suction valve with negates most, if not all, of the effects of adhesion due to the presence of a thin oil film between the suction valve and suction valve seat when the suction valve is closed. Accordingly, the opening of the suction valve takes place sooner in the suction stroke and is essentially solely responsive to the differential pressure across the suction valve.

Abstract: A valve assembly has a discharge valve member and a suction valve member. One of these valve members includes a reed valve. The reed valve has a tab which includes a slot which engages a cantilevered pin. The cantilevered pin allows flexing of the pin upon contact with the reed valve. In addition, the cantilever mounting of the pin provides a lubricant reservoir for lubricating the interface between the pin and the reed valve.

Abstract: An improved valve mounting assembly for a hermetically sealed compressor. The valve mounting assembly includes a valve, a damper, and a retention yoke. The valve, valve damper, and retention yoke cooperate to provide a valve mounting arrangement having high efficiency and low noise. The retention yoke includes an extension which is received between a yoke attachment and a valve plate. The extension is formed from a vibration attenuating material and reduces the communication of vibrations from the valve and valve plate to the yoke attachment. The retention yoke retains the valve and damper in position, and serves as a bumper to back up the damper and limit movement of the damper and valve.

Abstract: A suction valve for an axial piston compressor has a leaf spring fixed at one end, which spring at one end is fixed with a fixed portion between valve plate and cylinder block, at its other end covers over the suction valve opening with a closure portion and has an intermediate portion connecting these portions. The intermediate portion is located substantially outside the cylinder cross-section. A stop for the suction valve leaf spring is arranged in the region of the cylinder wall facing the fixed portion. This produces an optimum filling of the cylinder and thus an improvement in the efficiency of the compressor, as is especially desirable for refrigeration compressors.