An externally-supported rotary fluid machinery and a method for eliminating axial rotor displacement. The fluid machinery includes a box body, an air cylinder and a rotor, wherein the rotor is eccentrically mounted in the air cylinder; the air cylinder is mounted in the box body; one end of a sliding plate is inserted in the rotor, and the other end is embedded in a wall of the air cylinder; a fluid inlet is provided on the box body, and a fluid outlet is provided on the air cylinder; a support end of the rotor protrudes out of the box body and is supported in a rotor bearing support structure; and a support end of the air cylinder also protrudes out of the box body and is supported in an air cylinder bearing support structure.

Aspects of the present invention relate to a stator component for a pump housing. The stator component has a plurality of fluid inlet channels for conveying fluid to respective pumping chambers. The fluid inlet channels each have an inlet port for conveying fluid into the pumping chamber. A plurality of fluid transfer channels are provided for conveying fluid to a respective one of the fluid inlet channels. The fluid transfer channels each have an inlet for receiving pumped fluid. The stator component is adapted to receive at least one sealing member for inhibiting the conveyance of fluid into an associated one of the pumping chambers. Aspects of the present invention relate to a pump housing, a cover plate and a pump. Aspects of the present invention also relate to a method of converting a stator component.

A rotary engine includes an intake port, an exhaust port, a rotor having an intake channel and/or an exhaust channel, and a rotor shaft coupled to the rotor. The rotor shaft has an inflow channel in communication with the intake channel and/or an outlet channel in communication with the exhaust channel. The rotary engine includes a housing having a working chamber formed between the housing and the rotor, the working chamber configured to handle, in succession, an intake phase, a compression phase, a combustion phase, an expansion phase, and an exhaust phase. The inflow channel cyclically communicates with the intake port and forms a passage between the intake port and the working chamber through the rotor shaft and the intake channel. The outlet channel cyclically communicates with the exhaust port and forms a passage between the exhaust port and the working chamber through the rotor shaft and the exhaust channel.

A scroll pump tip seal to seal a single stage of a scroll pump that includes a first scroll and a second scroll. The tip seal is formed of a plurality of seal segments fitted contiguously end to end to a tip face the scroll wall of the scroll to form a continuous seal between the tip face and a base plate of the second scroll.

The invention comprises a rotary engine method and apparatus configured with a self-actuating/self-damping vane system. In the rotary engine apparatus, a set of vanes extend from a rotor to a housing, whereby the rotary engine is divided into expansion chambers. Each of the vanes enclose a stressed band wound at least partially around two or more rollers. Potential energy of the stressed band, which is optionally a smart metal, provides a radially outward force on the vane toward the housing, aiding in seal formation of the vane to the housing.

The present invention provides an actuator that can realize the different compression ratios of the rotary engine. The invention actuator described above, includes three parts: the eccentric shaft part, the triangle rotor part and the control system. The eccentric shaft part which is described above, includes the front part of the eccentric shaft, the combination of electric three jaw and the rear part of the eccentric shaft. The triangle rotor part which is described above, includes the variable volume actuator, the front part of the rotor and the rear part of the rotor. The control system which is described above, includes the control system of electric three jaw and the rotating joint. The expansion and contraction of the electric three jaw described above, are controlled by the control system of electric three jaw described above. The eccentric shaft part described above passes through the triangle rotor part described above, to make the combination of electric three jaw to arrange in the annular groove described above. The reciprocating motion of the variable volume actuator described above, is controlled by the expansion and contraction of the claw top of the electric three-jaw. The invention can adjust the engine compression ratio through the whole compression ratio adjustment system, to make the rotary engine always work in the best compression ratio under different working conditions. Therefore, the invention can improve the performance of rotary engine significantly.

The present invention provides an actuator that can realize the different compression ratios of the rotary engine. The invention actuator described above, includes three parts: the eccentric shaft part, the triangle rotor part and the control system. The eccentric shaft part which is described above, includes the front part of the eccentric shaft, the combination of electric three jaw and the rear part of the eccentric shaft. The triangle rotor part which is described above, includes the variable volume actuator, the front part of the rotor and the rear part of the rotor. The control system which is described above, includes the control system of electric three jaw and the rotating joint. The expansion and contraction of the electric three jaw described above, are controlled by the control system of electric three jaw described above. The eccentric shaft part described above passes through the triangle rotor part described above, to make the combination of electric three jaw to arrange in the annular groove described above. The reciprocating motion of the variable volume actuator described above, is controlled by the expansion and contraction of the claw top of the electric three-jaw. The invention can adjust the engine compression ratio through the whole compression ratio adjustment system, to make the rotary engine always work in the best compression ratio under different working conditions. Therefore, the invention can improve the performance of rotary engine significantly.

A scroll fluid machine includes fixed and orbiting scrolls which define a compression chamber; a land which divides the compression chamber into first-stage and second-stage compression chambers; a wrap groove defined in a spiral shape along a tip of a fixed wrap of the fixed scroll; an intermediate groove defined in the land; a seal member; and an intermediate seal member. The land includes a first-stage outlet in communication with the first-stage compression chamber and a second-stage inlet in communication with the second-stage compression chamber. The wrap groove includes an outer peripheral wrap groove adjacent to the land on a radially outward side and an inner peripheral wrap groove adjacent to the land on a radially inward side. The intermediate groove is in communication with the outer and inner peripheral wrap grooves. The seal member is fitted in the wrap groove except the outer and inner wrap grooves.

A pump, comprising:

an accommodating housing which forms a cup-shaped accommodating space comprising an end-facing wall and a circumferential wall; and

a pump insert which is arranged in the accommodating space, wherein the pump insert comprises:

a rotor;

a first housing part and a second housing part, between which the rotor is arranged such that it can be rotated about a rotational axis and relative to the first and second housing part; and

a stroke ring which surrounds the rotor,

wherein an annular sealing element which is arranged between the end-facing wall and the second housing part encloses a pressure space which is formed between the end-facing wall and the second housing part, wherein the pressure space is connected via an outlet channel to a delivery chamber which is formed between the rotor and the stroke ring, and

wherein the spring comprises a spring structure which is made of metal and which imbues the spring with its essential spring characteristics, wherein the sealing element is fastened to the spring structure.

An oil-free screw compressor with good assemblability of a shaft seal device that reduces leakage of a compressed gas, where the oil-free screw compressor accommodates male and female screw rotors in a rotor chamber of a casing, supports each screw rotor by a bearing through a rotor shaft, and has shaft seal devices in a shaft seal space. The shaft seal devices include an oil seal on the side of the bearing, a packing case on the side of the rotor chamber, and a gas seal. An end of the packing case on the side of the bearing and an end of the oil seal on the side of the rotor chamber are fitted and fixed by interference fit to form a gas seal accommodation space, the gas seal accommodation space accommodating the seal ring.