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Patent Searching and Data


Matches 451 - 500 out of 7,654

Document Document Title
WO/2009/034717A1
A compressor (1) having compression mechanisms (20, 50) stacked in two tiers, the compression mechanisms (20, 50) respectively having cylinders (21, 51) with annular cylinder chambers (C1, C2, C3, C4) and respectively having annular pist...  
WO/2009/031626A1
Provided is a two-cylinder rotary type compressor comprising a compression mechanism unit (2) including a first cylinder (8A) and a second cylinder (8B) so formed through an intermediate partition (7) as to have a first cylinder chamber ...  
WO/2009/028261A1
A natural refrigerant low-pressure shell-type rotary compressor in which the amount of oil contained on the high-pressure side is reduced with sufficient lubrication and sealing performance at a sliding section secured. The compressor ha...  
WO/2009/028633A1
Provided is a multicylinder rotary type compressor (200), which satisfies relations of Rc < Rm + e and Rc ≥ Rs + e, for the radius (Rs) of an auxiliary shaft portion (4b), the radius (Rc) of a crankshaft portion (4c) and an eccentricit...  
WO/2009/025244A1
Provided is a multi-stage compressor which can reduce the oil circulation ratio by reducing the lubricant amount introduced into a high-stage side compression mechanism accompanied by an intermediate pressure coolant gas so as to improve...  
WO/2009/024698A2
The invention relates to a refrigeration compressor having a sealed housing defining a suction volume and a compression volume respectively provided on either side of a body (5) contained in the housing, and an oil injection circuit adap...  
WO/2009/024262A1
In a multi-level rotary piston vacuum pump or compressor, having at least two rotors (6, 7) in the form of rotary pistons, being disposed in a housing (1) on parallel shafts (5, 8) in a rotationally fixed manner, being synchronized count...  
WO/2009/017297A1
The present invention provides a 2 stage rotary compressor including a hermetic container (101 ), an electric motor (110) provided in the hermetic container (101 ) and composed of an stator (111 ), a rotor (112) and a rotation axis (113)...  
WO/2009/014161A1
Provided is a multi-stage compressor which can surely prevent a liquid compression by a compression mechanism of the higher stage side and prevent lowering of compression efficiency by overheat of an injection coolant and hoisting of a l...  
WO/2009/010796A2
An engine comprising a first section having a first face and a second section having a second face, the first and second faces being opposed to one another and arranged for relative rotation, the first face comprising at least one chambe...  
WO/2009/003884A1
The invention relates to a compressor for refrigerant, having an outer housing, having a spiral compressor with a first fixed compressor body arranged in the outer housing, and a second compressor body which can be moved relative to the ...  
WO/2008/152055A1
The orbiting-spiral scroll pump or compressorisprovided with two fixed stages (1, 1') and an internal or middle stage (3) moving with an orbiting movement.These stages areprovided withassociated systems having spirals for example in the ...  
WO/2008/149491A1
The inner space of a casing (31) is partitioned by partition members (61, 80) into a first space (38) and a second space (39). In the first space (38) is placed an expansion mechanism (60), and in the second space (39) are placed a compr...  
WO/2008/146634A1
[PROBLEMS] To provide a hybrid compressor having a delivery chamber of sufficient volume formed between the fixed scroll of a first compression mechanism and the fixed scroll of a second compression mechanism. [MEANS FOR SOLVING PROBLEMS...  
WO/2008/139877A1
A system for utilizing waste heat from a vehicle has a Rankine circuit, and the Rankine circuit has a fluid machine. An electric power generation unit of the fluid machine has a third rotation body placed coaxial with a first rotation bo...  
WO/2008/139667A1
A fluid machine (10) comprises a sealed container (11) at the bottom of which an oil reservoir (16) for storing oil is formed. In the sealed container (11), a main compression mechanism (3) to which the oil stored in the oil reservoir (1...  
WO/2008/137230A1
A system, in one embodiment, may include an engine, a compressor coupled to the engine, and an oil fill assembly coupled to the compressor. The oil fill assembly relocates an oil fill location from a bottom region of the compressor to a ...  
WO/2008/103300A3
A flexible impeller pump includes first and second component housings. The first component housing includes a first flexible impeller and the second component housing includes a second flexible impeller. As these impellers rotate within ...  
WO/2008/114860A1
A large capacity compressor employing CO2 as working gas. The multistage compressor comprises an enclosed housing, a plurality of compression mechanisms provided in the enclosed housing, and a motor for driving the plurality of compressi...  
WO/2008/108062A1
An expander-integrated compressor (10) has a two-stage rotary type expansion mechanism (3) having a first cylinder (41) and a second cylinder (42). In the expansion mechanism (3) are formed a suction hole (71) facing an operation chamber...  
WO/2008/105090A1
The annular cylinder chambers (C1, C2) of a cylinder (21) are divided into an outer cylinder chamber (C1) and an inner cylinder chamber (C2) by an annular piston (22). When the cylinder (21) is eccentrically rotated by the driving of a m...  
WO/2008/101387A1
A controlling method of a rotary compressor. Two or more cylinders (12,13) with different volumes are disposed in the compressor (1). In each cylinder (12,13) are respectively provided a piston (14.1,14.2), an eccentric crankshaft (17) f...  
WO/2008/096578A1
A valve body (64) that moves to open and close a bypass path (66) is fitted in a valve body receiving section (61). The valve body (64) forms, inside the valve body receiving section (61), a high pressure side space (61b) and a high pres...  
WO/2008/088660A2
An improved system and methodology for starting up a gas-turbine driven multi-stage compressor. The improvement involves isolating individual compression stages and creating positive pressure in each stage prior to initiating rotation of...  
WO/2008/087887A1
A compressor with a compression mechanism whose displacement can be varied by discharging a part of a refrigerant in a compression chamber through a bypass passage. A bypass passage opening opened to the compression chamber has a suffici...  
WO/2008/081899A1
A multistage compressor employing a gas injection system for CO2 cycle that attains enhancements of compression efficiency and compression performance. The multistage compressor is multistage compressor (2) for CO2 cycle (1) adapted to c...  
WO/2008/044064A3
A vacuum pump housing comprises first (12) and second half-shell stator components (14) defining a plurality of pumping chambers separated by partition members (26, 28, 30, 32). Each pumping chamber comprises an inlet port (42, 44, 46, 4...  
WO/2008/072720A1
A first split rotation shaft (10a) and a second split rotating shaft (10b) are eccentrically supported on the rotary shaft (7) of a motor (9) so as to be capable of rotating through bearings (11, 12) which do not receive a force in the t...  
WO/2008/062838A1
A compression mechanism (50) for compressing a refrigerant, an expansion mechanism (60) for expanding the refrigerant, and a rotating shaft (40) connecting the compression mechanism (50) and the expansion mechanism (60) are placed in a c...  
WO/2008/062839A1
A compression mechanism (50) for compressing a refrigerant, an expansion mechanism (60) for expanding the refrigerant, and a rotating shaft (40) for connecting the compression mechanism (50) and the expansion mechanism (60) are stored in...  
WO/2008/062837A1
A compression mechanism (50) for compressing a refrigerant, an expansion mechanism (60) for expanding the refrigerant, and a rotating shaft (40) connecting the compression mechanism (50) and the expansion mechanism (60) are placed in a c...  
WO/2008/030491A3
A pump having a housing with an actuator member positioned inside for controlling the flow generated by the pump. A first decrease port is connected to the housing and has a surface area in operable contact with the actuator member. A se...  
WO/2008/053708A1
A rotary fluid machine having a stationary member and a movable member forming a fluid chamber along with the stationary member. In the rotary fluid machine in which the movable member eccentrically rotates about the stationary member wh...  
WO/2008/044064A2
A vacuum pump housing comprises first (12) and second half-shell stator components (14) defining a plurality of pumping chambers separated by partition members (26, 28, 30, 32). Each pumping chamber comprises an inlet port (42, 44, 46, 4...  
WO/2008/044456A1
A rotary expander having a cylinder (61), a piston (62) placed inside the cylinder (61), closure members arranged so as to hold the cylinder (61), and an injection path for further introducing operation fluid into an operation chamber (6...  
WO/2008/030491A2
A pump having a housing with an actuator member positioned inside for controlling the flow generated by the pump. A first decrease port is connected to the housing and has a surface area in operable contact with the actuator member. A se...  
WO/2008/026428A1
A multi-stage rotary fluid machine can be constituted as a so-called two-stage rotary expansion machine where refrigerant expands in an expansion chamber constituted of the first delivery side space (115b) of a first cylinder (105), the ...  
WO2008009073A8
Method for controlling a compressed air unit (1) comprising one or several compressed air networks, as well as a number of communicating controllers ( 6, 9, 13, 23, 24, 25 or 26) for controlling components that are part of the aforesaid ...  
WO/2008/019416A1
The invention relates to a multi-stage compressor (1) for compressing gases having a low-pressure region (2) and having a high-pressure region (5), wherein at least one rotary compressor (3) is provided in the low-pressure region (2) and...  
WO/2008/009072A1
Method for controlling a compressed air unit which consists of several compressed air networks (2 and 3) having at least one commonly controllable component, characterised in that , on the basis of measurement data of at least one of the...  
WO/2008/009073A1
Method for controlling a compressed air unit (1) comprising one or several compressed air networks, as well as a number of communicating controllers ( 6, 9, 13, 23, 24, 25 or 26) for controlling components that are part of the aforesaid ...  
WO/2008/003657A1
The invention relates to the drive for a screw spindle pump for the feeding and compression of gases, wherein the displacement rotors are driven via a crown-wheel or bevel-wheel transmission. In order to comply with the usual pump dimens...  
WO/2007/145465A1
Provided is a scroll compressor having an improved function of oil circulation and back pressure control. The scroll compressor includes: a housing; a drive part for generating a rotational force; a drive shaft driven by the drive part; ...  
WO/2007/132649A1
A compressor (100) with a built-in expander comprises a closed container (1) in which an oil is stored at the bottom, a compressing mechanism (2) or an expanding mechanism (3) disposed at the inside upper part of the closed container (1)...  
WO2006082366A8
A pumping system for evacuating an enclosure comprises a pumping mechanism (30), a motor (32) for driving the pumping mechanism, and a controller (36) for controlling the motor. The controller sets a maximum value for a rotational freque...  
WO/2007/119307A1
In a compression/expansion unit (30) as a fluid machine, both a compression mechanism (50) and an expansion mechanism (60) are stored in a casing (31). An oil feed passage (90) is formed in a shaft (40) for connecting the compression mec...  
WO/2007/107514A1
The present invention relates to a compressor (1) comprising a casing composed of two parts being an upper and lower casing (3 and 4) and more than one fin (6) mounted on the casing to increase the heat transfer surface area.  
WO/2007/102496A1
A compressor (20) includes compressing mechanisms (61, 62) having four compression chambers (61, 62, 63, 64). In the compressor (20), the first compression chamber (61) and the second compression chamber (62) have volume fluctuation cycl...  
WO/2007/088989A1
The present invention relates to a dry vacuum pump unit capable of achieving ultimate pressure of about 1 Pa. The vacuum pump unit includes a main pump (15) disposed at an outside-pressure side, and a booster pump (16) disposed at a vacu...  
WO/2007/065486A1
The invention relates to a multi-step helical screw compressor unit which consists of a drive housing (90), wherein a first, second, and third helical screw compressor (60, 70, 80) are secured in a protruding manner parallel to each othe...  

Matches 451 - 500 out of 7,654