The invention relates to a dry-compressing or oil-free compressor for generating a compressed gas and a method for oil separation for a dry-compressing compressor (1). The compressor has a compressor housing (4), a compression chamber (5) and at least one oil chamber (19a, 19b), in which an oil-lubricated bearing (18a, 18b) of the rotor bearing (16) is accommodated, as well as a shaft seal arrangement (10a, 10b), which is arranged between the oil-lubricated bearing (18a, 18b) and the compression chamber (5). The shaft seal arrangement (10a, 10b) has an outer seal (17a, 17b) facing the oil-lubricated bearing (18a, 18b) and an inner seal (12a, 12b) facing the compression chamber (5), wherein at least one sealing gas chamber (13a, 13b, 13c, 13d) for receiving sealing gas is formed between the outer seal (17a, 17b) and the inner seal (12a, 12b). The oil chamber (19a, 19b) has at least one gas inlet for a sealing gas flow from the sealing gas chamber (13a, 13b, 13c, 13d) and a gas outlet (26) for connection to an oil separator (30, 31, 32, 33). The oil chamber (19a, 19b) provides an oil chamber pressure p.sub.OR that exceeds the ambient pressure p.sub.0 of the compressor housing (4) by an oil separation pressure difference ?p.

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 be fitted to a tip face of a scroll wall of a first scroll of a scroll pump to seal between said tip face and a base plate of a second scroll of the scroll pump. The tip seal is made of metal and has at least one internally disposed void. The metal tip seal may be made of a foamed metal defining a plurality of internally disposed voids.

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.

A seal tube assembly of a pump system is provided. The seal tube assembly includes a single seal tube having a first axial end sealably coupled to a first vane pump and a second axial end sealably coupled to a second vane pump. The single seal tube includes transverse contact surfaces at the first axial end and transverse contact surfaces at the second axial end. The single seal tube is formed to define a first seal tube cavity at the first axial end and a second seal tube cavity at the second axial end

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 electric compressor includes: an electric motor; a compression mechanism driven by the electric motor; a housing accommodating the electric motor and the compression mechanism; an accommodation part provided on a sidewall of the housing and accommodating a drive circuit for driving the electric motor; a lid contacting the accommodation part and fastened to the accommodation part by a fastening portion; a sealing member sandwiched between the accommodation part and the lid so as to seal between them. The accommodation part has a wall standing from the sidewall of the housing, and a step is provided on a standing end surface of the wall orthogonal to a standing direction of the wall, at a midway position from an inside toward an outside of the accommodation part.