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WO/1997/014891A1 |
There is provided a refrigerant compressor which ensures a good cooling effect of a motor, reduces the loss of suction pressure and prevents the dilution of oil at the time of fluid reverse flow so as to improve the lubricating performan...
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WO/1997/009534A1 |
A high-pressure dome type compressor in which a compression factor (CF) having a fixed scroll (3) and a movable scroll (7) and a motor (M) having a driving shaft (4) for driving the compression factor are disposed in a high-pressure dome...
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WO/1997/004215A1 |
A temperature reduction device using scrolls for cryogenic expansion is disclosed. The device for expansion of a gaseous, liquid or two-phase fluid, comprising an expansion compartment which includes a first scroll (72), a second scroll ...
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WO/1996/037706A1 |
The invention relates to a worm-drive compressor (10) with a main rotor shaft (18) on which are fitted at least one first and one second main rotor (14, 16), each of which meshes with a matching first or second sub-rotor (20, 22) on a ro...
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WO/1996/031702A1 |
The flow, use, interaction and separation of lubricant and gas flowing through the suction pressure portion of a low-side refrigeration scroll compressor is managed by the use of a drive motor mounting sleeve and a multi-ported frame. Th...
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WO/1996/023976A1 |
A high side co-rotating refrigerant scroll compressor having an oil sump (64) in the discharge pressure portion (20) of its shell is protected from the abnormal conditions of high discharge pressure and reverse direction scroll rotation ...
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WO/1996/020345A1 |
A scroll compressor having a housing (10) containing an orbiting scroll (12) and a non-orbiting scroll (14) each having a base (16, 18) formed with a free side (17, 19) and a compression side (20, 22) and having an involute (24, 26) exte...
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WO/1996/017175A1 |
A rotary screw compressor having one or more stages (10, 20) is provided with a lift valve (14, 24) on each stage for unloading the compressor at starting up and rest periods. Each lift valve (14, 24) is affected by a spring (15, 25) tow...
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WO/1996/016302A1 |
The invention relates to a refrigeration system of the air cycle cooling system type, also called reversed Brayton cycle in which the air flows through compressor means (12, 16), heat exchanger means (24) for withdrawal of heat from the ...
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WO/1996/002799A1 |
A refrigeration system is disclosed in which negative energy storage is provided to significantly reduce electrical energy consumption during peak air conditioning hours. A transfer pump (54) is provided in the system for pumping condens...
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WO/1996/000350A1 |
A horizontal scroll compressor wherein a tail end of a spiral body (2b) of a fixed scroll (2) is connected to a tail and side of a spiral body (3b) of a movable scroll (3) for extension, wherein suction ports (22, 23) of respective compr...
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WO/1995/030091A1 |
A motor/pump unit for pumping vapor in response to a flow of liquid, and particularly useful in systems (10) for dispensing fuel to a vehicle (PV) wherein vapor given off by the fuel is to be returned from the filling port (FP) of the ve...
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WO/1995/024561A1 |
A discharge passageway (15) communicating with a discharge port (16) of a compressing portion (3) for discharging compressed air to an anticompressing portion side chamber (S1) of a motor (2) is provided at the center of a driving shaft ...
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WO/1995/021329A1 |
The invention relates specifically to a simplified and subsequently improved method to produce a scroll type vacuum pump that is capable of achieving vacuum pressures below 1 torr through the placement of at least one dynamic orbital vac...
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WO/1995/016860A1 |
A compressor for a refrigerant gas recovering machine, of the type comprising a housing (1), whereto is attached a cylinder (2), lodging a piston (3) driven by an eccentric shaft (4) that is supported by at least one main bearing (5), sa...
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WO/1995/015439A1 |
A device in a vacuum pump (23) of the liquid-ring type, serving a pulp pump and having a cylindrical vacuum chamber (25) and an impeller (26) eccentrically journalled in the vacuum chamber to rotate therein together with a liquid ring (2...
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WO/1995/012759A1 |
A scroll compressor in which an axial compliance equal to that ina conventional scroll compressor is realized during a steady running, i.e., the tips and roots of plate-like spiral teeth are allowed to slide with a slight contacting forc...
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WO/1995/005540A1 |
A vacuum pump (1) has an oil separator (42) connected downstream of its outlet (33) and a duct (45, 46) through which the oil separated in the oil separator (42) is returned to the vacuum pump (1). To feed back the oil in a simple manner...
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WO/1995/004221A1 |
The invention pertains to a slide vane vacuum pump (1) with a high vacuum stage (9, 22), with a fore-vacuum stage (8, 21), with a substantially cylindrical rotor (3) which has bearing and anchor segments (11 and 21, 22), a bearing segmen...
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WO/1995/004220A1 |
The invention pertains to a housing (2) for a two-stage rotary vane vacuum pump (1) with two pump chambers (8, 9) with corresponding armatures (71 and 72, respectively) and with a channel (77, 31, 78) devised in the housing (2), connecti...
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WO/1994/025807A1 |
The refrigeration compressor assembly (84) includes a housing (77) having input means (79) for receiving refrigerant for compression and output means (80) for returning compressed refrigerant; compressor means (74) mounted in the housing...
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WO/1994/010425A1 |
Disclosed are several embodiments of a stopping device operable between the drive shaft (24) and/or orbiting scroll (40) of a scroll compressor and a fixed wall (53) forming part of the compressor, for the purposes of automatically engag...
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WO/1994/009262A1 |
A spiral compressor (101') is described. It is desired that a spiral compressor of that kind be simple to manufacture, be of small size and low weight and at the same time have a high efficiency. For that purpose the spiral compressor (1...
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WO/1994/008141A1 |
The invention concerns a method of operating a claw-type vacuum pump (1) with two or more stages, each of which has a suction chamber (8, 9) with a pair of claw rotors (4, 5; 6, 7) and end-located suction and discharge ports (25, 27; 30,...
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WO/1993/021440A1 |
A means for attaching the bearing housing (22) to an outer shell (12) is disclosed. The outer shell (12) is plastically deformed into a plurality of apertures (42) formed into the bearing housing (22). The deformation (92) of the shell (...
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WO/1993/020332A1 |
A scroll type machine (10, 214) is disclosed which incorporates an improved mounting arrangement for the non-orbiting scroll member (64, 226) which mounting arrangement greatly facilitates manufacturing and assembly, effectively prevents...
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WO/1993/010355A1 |
A multi-stage compression mechanism is constructed such that, out of a plurality of compression elements, the discharge sides of lower-stage compression elements (7a) are successively and directly connected to the suction sides of upper-...
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WO/1993/010356A1 |
A rolling piston type rotary two-stage compression mechanism is constructed such that an electric motor, a lower-stage compression element (7a) and an upper-stage compression element (9a), which are driven by the electric motor, are prov...
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WO/1993/008405A1 |
A liquid nozzle (36) in use with an interstage passage (18) of a two stage compressor (10) and includes a first elongated element having a first elongated surface and a second elongated element having a second elongated surface. The firs...
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WO/1992/015774A1 |
Actual thermodynamic processes occuring in a system such as a heat pump or refrigeration plant are made to approach theoretical ideal processes, e.g. an isothermal (T0), by use of a multistage gear machine (1) as compressor and/or expand...
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WO/1992/015786A1 |
The invention concerns a device for supplying with inert gas a multi-stage dry-running vacuum pump (1) having devices for distributing the inert gas to the pump stages. In order to be able to monitor the flow of inert gas and/or to influ...
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WO/1992/014059A1 |
The invention relates to a dry-running vacuum pump (1) with at least one vertical shaft (2, 3) supported in an upper bearing plate (14) by a lubricated roller bearing (27) located in a cup component (51) open at the top. In order to redu...
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WO/1992/014060A1 |
A dry-running twin-shaft vacuum pump (1) with at least one expansion chamber (11, 12, 13), a pair of rotors (4, 5; 6, 7; 8, 9) in the expansion chamber and driven by the shafts (2, 3) and a gear casing (21). In order to limit the regions...
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WO/1991/017360A1 |
A scroll compressor provided with first and second scrolls rotating in the same direction, wherein a discharge valve for blocking an opening of a discharge hole provided in one of the first and the second scrolls is formed so as to be ac...
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WO/1991/016133A2 |
A manual device for generating local under or overpressure has a casing to which an adapter is fitted, a pump which is connected to the adapter via a line, a motor by which the pump can be driven and a power supply unit which powers the ...
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WO/1991/006768A1 |
A scroll compressor in which a discharge muffler (24) is disposed on the stationary spiral blade frame (7) in such a way that a first discharge space (24a) is formed and first and second discharge passages (25), (26) to pierce through th...
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WO/1991/006763A1 |
A scroll compressor: in which a revolving bearing (18b) to provide slide-connection between a driving shaft (4) and revolving scroll (18) for the purpose of imparting revolving movement to the main bearing (12) supporting the driving sha...
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WO/1991/006776A1 |
A revolving drive shaft (16) formed on the side opposite to a revolving spiral impeller (11) of a revolving end plate (12) is coupled into an eccentric bearing eccentrically provided in a main shaft of a crankshaft (6), the crankshaft (6...
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WO/1991/006764A1 |
A scroll compressor in which: an annular ring (94) to separate the side of high pressure lubricant space (oil chamber A (78a)) communicating with spiral oil grooves (41a), (41b) formed on the sliding surface of a bearing (18b) for induci...
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WO/1991/006769A1 |
A scroll compressor in such a structure that: a main shaft formed on one end of the crank shaft (6) for revolution-driving the revolving vortex blade members (11) is supported by the main bearing; a revolving driving shaft (16) formed on...
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WO/1991/006775A1 |
An interval between a discharge valve seat (49) and a discharge valve body (50) of a discharge check valve (52) provided in a discharge port (48) or compressed gas discharge paths (55, 56) adjacent to the discharge port of the mechanism ...
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WO/1991/006765A1 |
A scroll compressor in which an axially extending minute space in the compression chamber is ensured by energizing the revolving scroll (18) toward the compression chamber while utilizing the pressure of discharged refrigerant gas introd...
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WO/1990/004107A1 |
The invention relates to a machine of the rotary screw type for a gaseous medium having a compression section and an expansion section driving the compression section. According to the invention both the compression section and the expan...
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WO/1989/012751A1 |
The invention concerns a multi-stage vacuum-pump set in which an oil-lubricated or dry-running mechanical displacement-type pump is used for the last, atmospheric, stage, the displacement pump being connected on the vacuum side to at lea...
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WO/1989/012169A1 |
A vacuum pump unit arranged on a transportable support frame (1) consists of at least one liquid ring pump (2) coupled to the shaft of a drive motor (3), a cooler (5) and a separating container (4) for the operating liquid of the liquid ...
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WO/1984/004137A1 |
A vane compressor comprising a rotor excentrically arranged in a cylindric housing and vanes, which define a space between the periphery of the rotor and the inner surface of the housing. The volume of the space varies during the rotatio...
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WO/1983/001985A1 |
Charging and distributing device for a piston engine, the device including a variable displacement rotary compressor delivering through one of its shafts to a coaxial rotating distribution tube (1, 25), the tube being formed with ports (...
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WO/1983/001491A1 |
A rotary piston compressor which, due to its geometry, has eliminated virtually all dead space and therefore is of increased efficiency and has a high capacity for handling liquids in liquid/gas mixtures. The specification describes the ...
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WO/1983/000668A1 |
The rotor (4) of a vacuum pump used for operating a brake, etc., is driven by the rotating shaft (22) of a starter motor in a vehicle. The rotor (4) rotates constantly irrespective of the rotational speed of the engine.
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WO/1982/002739A1 |
Axial compliance/sealing means (40) for scroll-type apparatus. These means comprise seal elements (35) capable of experiencing axial and radial motion within channels (41) cut in the tips of the involute wraps (12, 16) to make sealing co...
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