70 results about "Reed valve" patented technology

The invention relates to a reciprocating compressor. The reciprocating compressor may include a housing, a drive motor, a drive shaft, a piston, a cylinder, a valve plate, a suction valve, and a suction valve stopper, and the suction valve stopper composed of an elastic member may be disposed between the suction valve and the cylinder to support a reed valve portion of the suction valve to limit an opening degree of the reed valve portion. Therefore, the opening degree of the suction valve can be sufficiently ensured, so that not only can the cooling force in a high-load operation region be improved, but also dead volume can be prevented in advance, and then the energy efficiency in a low-load operation region and / or a high-load operation region can be improved.

A reed valve assembly includes a retainer, one or more reed cages, and a plurality of reed petals. The retainer includes a flange, first and second openings, and a center retainer separating the first and second openings. The reed cages are configured to be advanced from the bottom of the retainer and partially through the first and second openings of the retainer and have at least two inner openings generally facing each other and at least two outer openings generally facing away from each other. The inner and outer openings are configured to be fluidly coupled to the first and second openings of the retainer. The reed petals are configured to extend over the inner openings and the outer openings. The center retainer and reed cages include one or more reed cage grooves and reed cage flanges configured secure the reed cages to the retainer.

An antirotation valve system for controlling flow through a valve opening defined in a compressor surface. The antirotation valve system includes a reed and a backer each having one mounting opening and one antirotation feature.

A dust container for a vacuum cleaner comprises a vessel, a reed valve, and a filter. The vessel has a longitudinal axis and an annular cross section transverse to the longitudinal axis. The vessel has a first end and a second end, a tangential inlet near the first end, and an axial outlet at the first end. The second end is closed, and the vessel is impervious except for the inlet and the outlet. A vacuum actuated valve biased toward a closed position is positioned to seal the inlet of the vessel, and a filter is positioned in covering relationship with the outlet of the vessel. Dust is trapped within the vessel which can be disposed of as a unit together with the valve and filter and can be replaced with a fresh unit.

The rail vehicle integrity check device 20 comprises a first connector 21 adapted to form an airtight connection with the brake pipe 22 mounted on the rear wagon of a rail vehicle, and a second connector 23 adapted to form an airtight connection with a main reserve pipe 24 mounted on the rear wagon of the rail vehicle. A one-way valve 25, adapted to be in fluid communication with the brake pipe and the main reserve pipe of the rear wagon of the rail vehicle, is mounted between the first 21 and second 23 connectors. This may be done by providing elbow joints 26, 27 between each of the connectors 21, 23 respectively and the one-way valve 24. For convenience, the one-way valve 24 and any elbow joints 26, 27 provided may be housed within an external casing 28 in order to prevent the ingress of dirt whilst in use. The pipe connectors 21, 23 may be connectors used widely within the railway industry, such as angle cocks or gladhand couplers, or screw thread connectors, push and turn locking mechanisms or push fit connectors. Suitable flexible closure element one-way valves 25 include, but are not limited to, diaphragm check valves, duckbill valves or reed valves. Suitable hinged closure element one-way valves include, but are not limited to, swing check valves, butterfly check valves or tilting flap check valves. The one-way valve 25 comprises a chamber 29 and a pressure-sensitive closure element 30 abutting a closure surface 31 within the chamber 29.

Systems and methods disclosed herein include a portable air pump comprising an electric air compressor and a compressor housing enclosing the electric air compressor. The electric air compressor includes an electric motor, a piston cylinder, a piston, and a reed valve. The piston has a piston head within the piston cylinder and a piston rod attached to the electric motor. The piston head includes a piston valve that allows air to enter the piston cylinder. The reed valve is configured to allow air to pass from the piston cylinder to an air outlet while the portable air pump and inflator system is in operation. The piston head further includes a relief channel that defines an opening through the piston head to allow air pressure to escape from within the piston cylinder.

The invention relates to a variable exhaust high-power two-stroke industrial engine, and belongs to the technical field of internal combustion engines. The engine comprises an engine body, an exhaust assembly and an air inlet control unit. The air inlet control unit is composed of a reed valve, an air filter, an electronic control unit and a reed pipe. The reed valves are hinged through an adjustable pin shaft, and a closed-loop feedback control loop is formed by combining non-contact detection of the reed pipes; the electronic control unit dynamically adjusts the opening angle and frequency of the reed valve through a fuzzy algorithm based on the rotating speed signal and the accelerator opening degree, and the scavenging efficiency is optimized; a rotatable baffle driven by a stepping motor is arranged in a three-way catalytic assembly of the exhaust assembly, the opening degree of the rotatable baffle is linked with an air inflow signal, and dynamic matching of exhaust back pressure and catalytic temperature is achieved. The problems that a reed valve of a traditional two-stroke engine is prone to fatigue, the catalytic efficiency is low, and emission exceeds the standard are solved, and the combustion efficiency and the environmental protection performance are remarkably improved.

The present application relates to a reed valve capable of suppressing occurrence of action failure caused by foreign matter. The reed valve (1) is provided with a valve element (4), a valve seat (6) having a valve hole (3) through which a fluid (J) can flow, a housing (8) that houses the valve element (4), and a reed (10) including an arm portion (18) and a valve element support portion (20), an end portion (22) of the arm portion (18) being fixed to the housing (8), the valve element support portion (20) being connected to the other end portion (24) of the arm portion (18) and supporting the valve element (4) in a manner to open and close the valve hole (3), if a direction of flow of the fluid (J) in the valve hole (3) is defined as a first direction (D1), and a surface of an inner surface of the housing (8) toward a downstream side of the first direction (D1) is defined as a first surface (21), then the first surface (21) includes a recessed portion (27) that opposes the arm portion (18).

The invention relates to the technical field of motorcycle exhaust purification, and discloses a motorcycle secondary gulp valve which comprises a valve body protection shell, the right side of the valve body protection shell is fixedly connected with a negative pressure protection shell, and the top face of the valve body protection shell is fixedly connected with an exhaust protection shell. The left side of the valve body protection shell is fixedly connected with an air inlet protection shell, sealing connection assemblies are arranged between the valve body protection shell and the negative pressure protection shell and between the exhaust protection shell and the air inlet protection shell, an exhaust assembly is arranged on the inner side of the exhaust protection shell, and a negative pressure sealing assembly is arranged on the inner side of the negative pressure protection shell. Through the action of the communicating assembly, the valve plate can seal the communicating cavity more quickly, the reed valve is closed in time, the problem of oil accumulation in the valve body caused by reverse flow of exhaust gas of an engine is solved, liquefied gas in the valve body can be volatilized in time, and the air supply flow can be increased; the waste gas emission is improved.

The application relates to the field of aeroengines, in particular to a two-stroke aero-piston engine air intake system and an air intake flow control method. The system comprises an air filter, a throttle body, an oil injector, a reed valve and a fuel supply unit for supplying oil to the oil injector which are communicated through a connecting pipeline, and further comprises a cooling control subsystem, the cooling control subsystem comprising a cooling injector which is arranged on the connecting pipeline downstream of the throttle body and upstream of the oil injector; the inner wall surface of the connecting pipeline is provided with a non-uniform protruding structure to improve the proportion of the air intake along the resistance. The scheme can solve the technical problem that the air intake flow of the two-stroke aero-piston engine has large discreteness under low load, and realizes the technical effect of improving the consistency of the air intake flow under the low load of the engine.

The present invention relates to an electric compressor comprising: a driving unit for generating power; a compression mechanism including an orbiting scroll and a fixed scroll engaged with the orbiting scroll and compressing a refrigerant; a rotary shaft for receiving the power from the driving unit and rotating to transmit the power to the compression mechanism; a discharge port formed through the fixed scroll and discharging the refrigerant; a reed valve disposed on the fixed scroll to open and close the discharge port; and a retainer member disposed on the fixed scroll to limit an opening range of the reed valve, the retainer member being configured of a nonmetal material. According to the present invention, hitting between the reed valve and the retainer can be alleviated to extend the lifespan and durability of the reed valve and the retainer and reduce hitting noise, and additionally, the retainer may be made by applying a non-metallic material such as a composite material, a synthetic resin, and a reinforced plastic and performing injection-molding integrally, thereby achieving the effects of weight reduction and reduced production costs.

A first surface (51) comprises: a valve seat surface (58) that comes into contact with a tip part (72) of a reed valve (70) in a closed state; and a groove (59) that is formed around the valve seat surface (58) and overlaps an outer edge (72a) of the tip part (72) when viewed in a second direction. The first surface (51) includes a contact surface (75) that comes into contact with a movable portion (73) of the reed valve (70) in the closed state.

To restrain upsizing of a cylinder head cover and install a reed valve in an appropriate place.SOLUTION: Secondary air is supplied to an exhaust port of an engine (20). A cylinder head (23) in which an exhaust cam shaft (56) and an intake cam shaft (57) are installed, a cylinder head cover (24) which is fixed onto the cylinder head by fastening members (69a to 69c), a reed valve which prevents a backward flow of exhaust gas from the exhaust port to an upstream side, and an ignition plug (59) which is positioned between the intake cam shaft and the exhaust cam shaft are provided in an upper structure of the engine. A housing section (74) which houses the reed valve is provided adjacently to the ignition plug in an upper portion of the exhaust cam shaft in the cylinder head cover. A supply passage (64) for introducing secondary air to the exhaust port from the housing section is formed in a side opposite to the ignition plug while sandwiching the exhaust cam shaft in the cylinder head cover.SELECTED DRAWING: Figure 4

The invention belongs to the technical field of piston engines, and discloses a special-shaped air inlet channel two-stroke piston engine reed valve which comprises a valve body, a valve plate, a pressing plate and a screw. The whole valve body is wedge-shaped, the cross section is a non-isosceles acute triangle, a multi-window hard framework is arranged in the valve body, and the surface of the valve body is covered with a vulcanized rubber layer. The valve plate is made of a carbon fiber composite material and comprises a plurality of blades, the bending area of each blade is of a contraction structure with a wide upper part and a narrow lower part, and the tip corner is wrapped by a fillet; the screw is a half-round head fine thread screw, and the threaded end of the screw is exposed out of the inner side of the valve body by 3-5 mm to serve as a The valve plates on the two sides are different in length, and the screw holes in the two sides are asymmetrically staggered. The surface heat dissipation coefficient of the pressing plate is smaller than that of the screw, and the contact surface of the screw head and the pressing plate is coated with thread glue. Heat of the valve plate and cold air flow are subjected to convective heat exchange through heat conduction of the screws, heat balance is achieved, the service life of the reed is prolonged, opening and closing stability and sealing performance are improved, impact resistance and torsion resistance are enhanced, and the valve plate is suitable for high-rotating-speed aero-engines.

An integrated reversing engine crankcase assembly comprises a crankcase and a transmission case, a cylinder block mounting plane is arranged on the large head side of the crankcase assembly, and engine suspension mounting points are arranged on the periphery of the cylinder block mounting plane; a shaft hole of an output shaft and a mounting plane of a propeller are arranged on the small end side of the crankcase assembly; a piston type air supply pump is arranged on the left side of the crankcase assembly and takes air from the crankcase assembly. A reed valve air inlet is formed in the rear side of the crankcase assembly. The transmission case is connected with the crankcase, and a reversing structure is formed through gear meshing connection. The crankcase assembly is compact in structural design, the radial size of an engine is reduced, and the output direction is changed through gear transmission.

A variable camshaft timing (VCT) control valve assembly includes a control valve having one or more valve faces and a valve cavity, one or more cavity vent ports in the control valve configured to communicate fluid between an outer surface of the control valve and the valve cavity, a valve sleeve having a sleeve cavity to receive the control valve and a plurality of holes, at least one of the holes configured to be in fluid communication with an advance fluid chamber of a VCT device and another one of the holes configured to be in fluid communication with a retard fluid chamber, the control valve axially slidable relative to the valve sleeve, and one or more reed valves attached to an outer surface of the valve sleeve configured to control fluid flow between one of the advance fluid chamber or the retard fluid chamber and the other of the advance fluid chamber or the retard fluid chamber.

The one-way valve assembly can be arranged on the micro water pump, the one-way valve assembly comprises a base and a reed valve, the base is provided with a fluid channel and is provided with a base body and a boss protruding outwards relative to the base body, and a contact face inclining relative to the base body is formed on the boss. A through hole is formed in the contact surface of the fluid channel; the reed valve is provided with a mounting part and a tongue piece capable of swinging relative to the mounting part, the mounting part is fixedly arranged on the seat body, and when the reed valve is in a closed state, the tongue piece is in contact with the contact surface and covers the through opening. The miniature water pump is provided with at least one one-way valve assembly and further comprises a cover assembly provided with a water pumping cavity and a water pumping component movably arranged at the water pumping cavity, the cover assembly is provided with a fluid path for fluid to enter and leave the miniature water pump, and the one-way valve assemblies are arranged on the fluid path. The water pumping cavity and the fluid channel form a part of a fluid path.

An upper structure of an engine in which secondary air is supplied to an exhaust port of an engine (20). The upper structure includes: a cylinder head (23) in which an exhaust camshaft (56) and an intake camshaft (57) are installed; a cylinder head cover (24) fixed on the cylinder head by fastening members (69a to 69c); a reed valve (73) configured to prevent backflow of exhaust gas from the exhaust port to an upstream side; and an ignition plug (59) positioned between the intake camshaft and the exhaust camshaft. An accommodating portion (74) for accommodating the reed valve is provided adjacent to the ignition plug above the exhaust camshaft in the cylinder head cover. A supply path (64) for introducing secondary air from the accommodating portion to the exhaust port is formed on an opposite side of the cylinder head cover from the ignition plug across the exhaust camshaft.

The invention relates to a scroll compressor. A main discharge port is formed in the center of the fixed substrate. A sub-discharge port is formed in a position different from the main discharge port in the fixed substrate. A main recess that opens toward the main reed valve such that the cross-sectional area of the flow path of the fluid increases is formed in the main discharge port. The auxiliary discharge port is formed with an auxiliary recess that opens toward the auxiliary reed valve such that the cross-sectional area of the fluid flow path becomes large. A sealing area for sealing the sub-recess by contact between the fixed substrate and the sub-reed valve is larger than a sealing area for sealing the main recess by contact between the fixed substrate and the main reed valve.

Systems and methods disclosed herein include a portable air pump comprising an electric air compressor and a compressor housing enclosing the electric air compressor. The electric air compressor includes an electric motor, a piston cylinder, a piston, and a reed valve. The piston has a piston head within the piston cylinder and a piston rod attached to the electric motor. The piston head includes a piston valve that allows air to enter the piston cylinder. The reed valve is configured to allow air to pass from the piston cylinder to an air outlet while the portable air pump and inflator system is in operation. The piston head further includes a relief channel that defines an opening through the piston head to allow air pressure to escape from within the piston cylinder.

The application provides an engine, comprising a body provided with a containing cavity and an exhaust passage communicated with the containing cavity; a reed valve installed at an opening of the containing cavity; a gland installed on the body and blocking the opening of the containing cavity; and a fireproof member arranged in the containing cavity, wherein the fireproof member comprises a bottom plate and two side plates respectively arranged at opposite sides of the bottom plate, the two side plates are arranged at a side of the bottom plate facing the reed valve, and a plurality of through holes are formed in the bottom plate; wherein one end of the exhaust passage communicated with the containing cavity and the reed valve are respectively arranged at opposite sides of the bottom plate, a protruding portion is arranged on an outer side of at least one of the two side plates, and the maximum width of the fireproof member is greater than or equal to the width of the part of the containing cavity containing the fireproof member. When the high-temperature exhaust gas in the engine flows reversely in the exhaust passage, the mesh structure formed by the plurality of through holes in the bottom plate can cut and distribute the high-temperature exhaust gas, reduce the damage of the exhaust gas to the reed valve, and improve the service life of the reed valve.

An upper structure of an engine in which secondary air is supplied to an exhaust port of an engine. The upper structure includes: a cylinder head in which an exhaust camshaft and an intake camshaft are installed; a cylinder head cover fixed on the cylinder head by fastening members; a reed valve configured to prevent backflow of exhaust gas from the exhaust port to an upstream side; and an ignition plug positioned between the intake camshaft and the exhaust camshaft. An accommodating portion for accommodating the reed valve is provided adjacent to the ignition plug above the exhaust camshaft in the cylinder head cover. A supply path for introducing secondary air from the accommodating portion to the exhaust port is formed on an opposite side of the cylinder head cover from the ignition plug across the exhaust camshaft.

The utility model provides a kind of explosion-proof V-type piston open-type compressor unit of coal mine underground integrated air conditioner, it is constituted by V-type piston open-type compressor, explosion-proof motor, elastic pin coupling and vertical and horizontal dual-purpose base, compressor is equipped with multiple groups of air inlet and air outlet and reed valve structure air inlet and air outlet valve, valve piece is stainless steel material, explosion-proof motor is equipped with explosion-proof terminal box and mesh explosion-proof structure cooling fan cover, coupling pin covers antistatic rubber layer, exposed part has protective cover.The compressor unit explosion-proof safety, stable and efficient operation, adapt to underground environment and be convenient for maintenance.

A multi-chamber static pressure gas bearing of a Stirling generator comprises a static pressure gas bearing cylinder, a static pressure gas bearing cover and a reed valve, the static pressure gas bearing cover comprises a bottom cover and a connecting rod, the connecting rod is a hollow structure, one end of the gas bearing cylinder is open, and the other end is provided with a bottom plate, the bottom plate is provided with a connecting rod assembly hole, the static pressure gas bearing cover is assembled on the open end of the gas bearing cylinder, the chamber between the connecting rod and the static pressure gas bearing cylinder is evenly divided into N pressure storage chambers by N partitions, the bottom cover is provided with N air inlet holes, the air inlet holes are connected with the corresponding pressure storage chambers, the side wall of the gas bearing cylinder is provided with N groups of throttle holes, each group of throttle holes is connected with the corresponding pressure storage chamber; each pressure storage chamber is provided with a reed valve, and each reed valve is located at the corresponding air inlet hole. The present invention distributes air supply through multiple pressure storage chambers, and each group of throttle holes uses a separate pressure storage chamber for air supply. By adjusting the air supply pressure, asymmetric loads can be balanced and load balancing ability can be improved.

In a process, an inlet valve is opens from a hot plenum, and injects a working volume with hot fluid, and then closes. The hot fluid expands as a piston moves down. As the piston approaches the BDC, uniflow ports at a bottom uncover, and timed valves at a top open, flooding the fluid with cooled pressurized fluid from a cold plenum, and supercooling the expanded fluid into the working chamber where the fluid was prepared and cooled during a previous cycle. The working fluid is compressed back into the cold plenum, wherein heat is removed, and the timed valves close. The fluid remaining in the working volume is compressed into a remaining upstroke volume before being pressed into the hot plenum. The compressed fluid in the working volume is displaced by the piston motion through a one-way exhaust reed valve to the hot plenum, where it is reheated.

The iodine working medium high-pressure electromagnetic valve of the reed structure comprises an inlet assembly, a coil assembly, a valve element assembly and a valve seat which are sequentially connected from left to right in the axial direction, and the coil assembly is arranged to be capable of controlling the valve element assembly to do reciprocating motion through power on and off so that the valve element assembly can control on and off of a valve runner; wherein the valve element assembly comprises an outer armature, an inner armature, a reed, a valve element, an inner backing ring, an outer backing ring and a pressing ring, the inner armature, the valve element and the pressing ring are coaxially arranged in sequence from left to right, and the outer backing ring and the outer armature are arranged outside the inner armature in sequence from inside to outside; the inner armature is connected and clamped by reeds arranged at the two ends of the inner armature, so that the inner armature does not have a sliding fit surface during axial movement; the valve element is made of polytrifluorochloroethylene, and it is guaranteed that the valve element is not corroded in the iodine working medium state. The electromagnetic valve is reasonable in structure, convenient to machine and assemble, high in corrosion resistance and long in service life, and the production qualification rate is increased while miniaturization and light weight are achieved.

The application relates to a variable exhaust two-stroke industrial engine, belonging to the technical field of internal combustion engines; the engine comprises an engine main body, an exhaust assembly and an air intake control unit; the air intake control unit is composed of a reed valve, an air cleaner, an electronic control unit and a dry reed; the reed valve is hinged through an adjustable pin shaft, and a closed-loop feedback control loop is formed by combining non-contact detection of the dry reed; the electronic control unit dynamically adjusts the opening angle and frequency of the reed valve through a fuzzy algorithm based on a rotating speed signal and a throttle opening degree, so that scavenging efficiency is optimized; a rotatable baffle driven by a stepping motor is arranged in a three-way catalytic assembly of the exhaust assembly, the opening degree of the rotatable baffle is linked with an air intake signal, and dynamic matching of exhaust back pressure and catalytic temperature is realized. The application solves the problems of fatigue of a reed valve of a traditional two-stroke engine, low catalytic efficiency and excessive emission, and significantly improves combustion efficiency and environmental protection performance.

The invention provides an engine which comprises an engine body provided with a containing cavity and an exhaust passage communicating with the containing cavity. The reed valve is mounted at the opening of the accommodating cavity; the gland is mounted on the machine body and blocks the opening of the accommodating cavity; the flame-retardant part is arranged in the containing cavity, the flame-retardant part comprises a bottom plate and two side plates located on the two opposite sides of the bottom plate respectively, the two side plates are located on the side, facing the reed valve, of the bottom plate, and a plurality of through holes are formed in the bottom plate; wherein the end, communicated with the containing cavity, of the exhaust passage and the reed valve are located on the two opposite sides of the bottom plate respectively, a protruding part is arranged on the outer side of at least one of the two side plates in a protruding mode, and the maximum width of the flame-retardant part is larger than or equal to the width of the part, containing the flame-retardant part, of the containing cavity. When high-temperature waste gas in an engine flows reversely in the exhaust passage, the mesh structure formed by the through holes in the bottom plate can cut and divide the high-temperature waste gas, damage of the waste gas to the reed valve is reduced, and the service life of the reed valve is prolonged.

The invention provides an air inlet device of a two-stroke heavy oil engine, and belongs to the field of engine air inlet system design. In order to solve the problems that an existing multi-cylinder two-stroke heavy oil engine is large in number of throttle valves, large in control difficulty and low in air inlet efficiency, the device is formed by sequentially connecting an air filter, the throttle valves, an air inlet pipe, a reed valve upper seat, a reed valve, a reed valve mounting seat and a reed valve lower seat, the air inlet pipe comprises a pressure stabilizing cavity and an air inlet manifold, and the reed valve is a one-way valve. When an engine sucks air, the reed valve is opened, and fresh air enters the air cylinder through the pressure stabilizing cavity of the air inlet pipe, the air inlet manifold and the reed valve after being filtered and regulated by the throttle valve; when the gas inlet is closed, the reed valve prevents gas backflow, and the pressure stabilizing cavity can reduce gas inlet pressure wave reflection so as to reduce resistance. According to the device, the number of throttle valves is reduced, the air inlet stability and the air inlet efficiency are improved, the scavenging efficiency and the control efficiency of an engine controller are improved, and the device is suitable for performance optimization of the two-stroke heavy oil engine.

Provided herein is a valve stopper positionable within a barrel of an injection device. The valve stopper includes a membrane comprising a proximal face and a distal face and that separates a first chamber and a second chamber of the barrel. A lateral wall is joined to the membrane that defines at least one cavity and provides a circumferential sealing surface that sealingly engages an inner surface of the barrel. The membrane comprises a reed valve thereon that may be actuated to selectively create a fluid path through the membrane from the proximal face to the distal face. The reed valve includes a block formed integrally with the membrane and that includes one or more openings therein, and one or more flaps configured to deflect to uncover the openings to create a fluid path through the reed valve for transferring fluid only from the second chamber to the first chamber.