23 results about "Reed valve" patented technology

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 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.

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.

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.

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 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.

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.

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 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 application discloses a motor driving circuit of a soybean milk machine or a cell disruptor and a control method thereof, and relates to the technical field of the soybean milk machine or the cell disruptor. The motor driving circuit comprises a power supply circuit, a heating disc driving circuit and a motor driving circuit, and the heating disc driving circuit and the motor driving circuit are in communication with the power supply circuit. The motor driving circuit comprises a first thyristor, a second thyristor and a first relay which are connected in series. The control electrode of the first thyristor is connected with the collector of a first triode. The control electrode of the second thyristor is connected with the input end of a first chip. The output end of the first relay is connected with the collector of a second triode. The emitter of the first triode, the output end of the first chip and the emitter of the second triode are connected with a magnetron dry reed valve in series. The magnetron dry reed valve is grounded. The application can fully meet the new national standard opening cover safety requirements, greatly reduce the product modification cost, avoid major changes to the existing structure, improve the reliability of safety protection and design flexibility.

The invention discloses a reed valve suitable for an air inlet system of a rotor engine, and belongs to the technical field of engine accessories. The problems that a traditional reed valve is prone to fatigue fracture, fast in abrasion and poor in sealing performance under the high-frequency vibration working condition of a rotor engine, and then the air inlet efficiency is low, and the service life is short are solved. The movable end of the carbon fiber diaphragm movably covers a valve port of the valve seat, the silica gel coating is coated on a sealing surface, in contact with the valve seat, of the carbon fiber diaphragm, the lift limiter is arranged on the outer side of the carbon fiber diaphragm, and the fixed end of the lift limiter covers the fixed end of the carbon fiber diaphragm. The lift limiter and the carbon fiber diaphragm are fixed on the valve seat through bolts, the cantilever end of the lift limiter is an arc-shaped surface which is gradually far away from the carbon fiber diaphragm, and a gap between the other end of the lift limiter and the valve seat is the lift of the carbon fiber diaphragm. The high-frequency vibration fatigue resistance can be improved. The silica gel coating reduces high-frequency impact abrasion, improves the sealing performance, reduces the sealing leakage rate and improves the air inlet efficiency.

The reed valve core comprises a reed cage, a reed, and a securing band. The reed cage has a top wall and two or more sidewalls defining an interior space. A fluid inlet and a fluid outlet are positioned in the top wall and one of the sidewalls, respectively. The reed is positioned over and is configured to seal the fluid outlet to occlude a flow of fluid from the fluid outlet. The securing band is positioned over the reed and the reed cage to fasten a top portion of the reed to a top portion of the sidewall in which the fluid outlet is positioned. The positioning of the securing band defines a bending axis for the reed to articulate and to displace the reed from the reed cage upon a fluid pressure differential being exerted on the reed.

The utility model provides a valve group assembly, a cylinder head assembly and a compressor. The valve group assembly comprises a valve plate and a valve plate, the valve block is installed on the valve plate, at least three exhaust holes are formed in the valve plate, at least a first reed valve, a second reed valve and a third reed valve are arranged on the valve block, and the first reed valve, the second reed valve and the third reed valve cover the corresponding exhaust holes respectively; the end face of the valve plate serves as a projection plane, the first reed valve and the third reed valve are arranged in the same direction in the first direction, the second reed valve is arranged between the first reed valve and the third reed valve, and the second reed valve is arranged in the opposite direction in the first direction. The second reed valve is arranged in the reverse direction in the first direction, so that the limited space on the valve plate can be fully utilized.

Systems and methods disclosed herein include a portable air pump including an electric air compressor and a compressor housing surrounding the electric air compressor. The electric air compressor comprises a motor, a piston cylinder, a piston and a reed valve. The piston has a piston head located within a piston cylinder and a piston rod attached to the 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 flow from the piston cylinder to the air outlet when the portable air pump and inflator system is operated. The piston head also includes a pressure relief passage defining an opening through the piston head to allow air pressure to escape from within the piston cylinder.

The application discloses a kind of air supplement valve assembly of gasoline outboard motor, it is related to fuel evaporation control device technical field, including stepper motor, the upper end of stepper motor is equipped with motor connection ECU port, the lower end of stepper motor is equipped with valve core by output shaft, the lower end of the stepper motor is equipped with air supplement valve mounting seat, the lower end of the air supplement valve mounting seat is equipped with lower pipeline, gas outlet passage is opened in the inside of the lower pipeline, the gas outlet passage extends to outside intake manifold, the side end of the air supplement valve mounting seat is equipped with air supplement valve round pipe, air inlet is opened in the inside of the air supplement valve round pipe, the lower of valve core in the inside of the air supplement valve mounting seat is equipped with connecting port, the both ends of the connecting port are connected with air inlet and gas outlet passage respectively.The application is equipped with a series of structures, and the stepper motor driven air supplement valve is directly controlled by ECU, receives signal and acts synchronously with throttle, completely solves the problem of response lag of traditional spring type air supplement valve.

The utility model belongs to the technical field of aviation piston engines, and particularly relates to a reed valve for a two-stroke aviation piston engine, which comprises a valve seat and a valve body, and an electric heating sheet is arranged on an elastic valve sheet of the reed valve; the electric heating piece heats mixed gas entering the gas inlet in the starting stage of the aviation piston engine. Oil-gas mixture entering an engine cylinder is directly heated, and the mixed gas flows through the reed valve to quickly absorb heat mainly in a heat convection manner, so that the temperature of the mixed gas is increased, the evaporation rate of fuel oil is increased, the atomization quality of the fuel oil is improved, the mixed gas can be quickly ignited near a compression top dead center of an engine, and the combustion efficiency is improved. Quick starting of the two-stroke aviation piston engine is achieved, the starting success rate is greatly increased, and meanwhile the starting reliability in the low-temperature environment is improved.

A lead valve (70) has a base part (71) that is fixed to a valve retainer (60), a distal-end part (72) that opens and closes an outflow port (44), and a constricted part (73) that connects the base part (71) and the distal-end part (72). The width of the constricted part (73) in a third direction orthogonal to a first direction and a second direction is less than the third-direction width of the base part (71). Inner surfaces (53, 54) that form a valve chamber (50) are formed further outward in the third direction than the constricted part (73) as seen in the second direction. Side surfaces (61, 62) of the valve retainer (60) are formed further outward in the third direction than the constricted part (73) as seen in the second direction.

A first cylinder (31) is provided with a first valve accommodation part (31j) that is recessed outward from the inner circumferential surface and accommodates a first reed valve (63) and a first valve retainer (64). The first valve retainer (64) has a first surface (64b) facing the first reed valve (63) and a second surface (64c) on the opposite side from the first surface (64b). A center line (C1) extending in the longitudinal direction of the first reed valve (63) overlaps an opening of the first valve accommodation part (31j) on a first cylinder chamber (S1) side. A first end edge (31k), on a valve mounting surface (31g) side, of the opening of the first valve accommodation part (31j) on the first cylinder chamber (S1) side is positioned closer to the second surface (64c) side of the first valve retainer (64) as compared to the valve mounting surface (31g) in a first direction orthogonal to the valve mounting surface (31g).

The objective is to provide a rotary compressor and refrigeration cycle device that can suppress the deterioration of compression performance. [Solution] The rotary compressor of this embodiment comprises a cylinder, a rotor, and vanes. The cylinder has a cylinder chamber. The rotor is located inside the cylinder chamber and rotates around a rotation axis eccentric to the cylinder chamber. The vanes are located in slits of the rotor and move forward and backward relative to the cylinder chamber as the rotor rotates, dividing the cylinder chamber into smaller chambers. The cylinder has a first discharge port and a second discharge port for discharging the fluid compressed in the smaller chambers to the outside of the cylinder chamber. The second discharge port is located upstream of the first discharge port in the direction of rotor rotation. The rotary compressor further comprises a first reed valve located outside the cylinder chamber for opening and closing the first discharge port and a second reed valve for opening and closing the second discharge port.

The reed valve core (100) comprises a reed cage (101), a reed (102), and a securing band (103). The reed cage has a top wall (1011) and two or more sidewalls (1018) defining an interior space (1020). A fluid inlet (1011a) and a fluid outlet (1015) are positioned in the top wall and one of the sidewalls, respectively. The reed is positioned over and is configured to seal the fluid outlet to occlude a flow of fluid from the fluid outlet. The securing band is positioned over the reed and the reed cage to fasten a top portion of the reed to a top portion of the sidewall in which the fluid outlet is positioned. The positioning of the securing band defines a bending axis for the reed to articulate and to displace the reed from the reed cage upon a fluid pressure differential being exerted on the reed.

A fastening member (80) has a head section (80a) and a shaft section (80b) extending from the head section (80a) in a second direction. A base section (71) of a reed valve (70) is formed having a first hole (83) through which the shaft section (80b) of the fastening member (80) is inserted. A valve guard (60) is formed having a second hole (84) through which the shaft section (80b) is inserted. A partition member (90) is formed having a first space (81a) which is located outside a valve chamber (50) and which accommodates the head section (80a).

Exhaust gas recirculation device (10) for recirculating a portion of the exhaust gas from an engine (1) to an intake side of the engine (1) through an EGR channel (Ag), wherein the exhaust gas recirculation device (10) comprises: a reed valve (13) provided at a connection position between the EGR channel (Ag) and an intake channel (En) of the engine (1); an EGR valve (12) provided on the EGR channel (Ag); and an EGR pipe (14) forming a channel connecting the EGR valve (12) and an EGR cooler (11), wherein the EGR pipe (14) is part of the EGR channel (Eg), wherein the EGR pipe (14) has natural frequency characteristics of 200 Hz or less and suppresses a resonance of an opening / closing noise generated by the reed valve (13), wherein the resonance is located within the EGR channel (Eg).

A clutch assembly includes a shaft, a backplate secured to the shaft, a plurality of clutch plates, a hydraulic piston, and a balance dam. The hydraulic piston is sealed to the shaft and is axially slidable on the shaft to clamp the plurality of clutch plates closed against the backplate to close the clutch assembly. The balance dam is secured to the shaft and is axially disposed between the backplate and the hydraulic piston. The balance dam has a cooling flow orifice and a cooling flow valve for regulating a flow of cooling oil through the cooling flow orifice. In some example embodiments, the cooling flow valve is a reed valve having a displaceable steel plate that is secured to the balance dam and is preloaded against the balance dam to cover the cooling flow orifice.