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Matches 1 - 50 out of 7,333

Document Document Title
WO/2018/010536A1
A three-level roots water-ring intelligent frequency conversion control vacuum system comprises a first-level roots mechanical vacuum pump (1), a second-level roots mechanical vacuum pump (2), and a traction liquid ring pump (3). The fir...  
WO/2018/003431A1
A multi-stage compressor (2) comprises: a hermetic housing (3); and at least two or more stages of compression mechanisms accommodated within the hermetic housing, the at least two or more stages of compression mechanisms including a low...  
WO/2017/219669A1
A pump assembly and a compressor comprising same. The pump assembly comprises a first-stage cylinder (40) and a second-stage cylinder (6). The second-stage cylinder (6) and the first-stage cylinder (40) are stacked. A plurality of workin...  
WO/2017/213060A1
This hermetic compressor is provided with a compression mechanism section for compressing a gas medium. The compression mechanism section has: a first discharge valve mechanism for discharging to a first sound deadening chamber a gas med...  
WO/2017/198725A1
Hybrid multistage systems and methods for converting the potential energy of a pressurised gas, particularly air, into mechanical work of two rotating shafts (L.16 and H.10) when operating in expansion mode, and for producing compressed ...  
WO/2017/199733A1
The hermetic compressor comprises a compression mechanism unit and an electric motor unit. The compression mechanism unit includes: multiple cylinders; a first bearing and a second bearing which are arranged so as to sandwich the cylinde...  
WO/2017/187816A1
The rotary cylinder type compressor (1) comprises: a cylinder (21) disposed inside a housing (10) in a rotatable manner; and a cylindrical rotor (22a, 22b) disposed inside the cylinder and rotating about an eccentric axis with respect to...  
WO/2017/178970A1
The present invention is directed to a controller for a compressor, more specifically for a first electrical VSD motor configured to drive a compressor element, said controller comprising a housing in which is provided a rectifier, a DC ...  
WO/2017/179714A1
A hermetic two-stage compressor is equipped with a scroll compressor (13) that further compresses a refrigerant (R) discharged from a rotary compressor (12), and is arranged above an upper bearing (31) having a bearing main body (31a) su...  
WO/2017/175945A1
A motor-operated compressor includes a casing having an inner space in which a driving motor, an orbiting scroll and a fixed scroll are accommodated, and a controller provided outside the casing. The casing includes an intake hole formed...  
WO/2017/169595A1
A screw compressor (1) is provided with: a first compressor body (11) driven by a first motor (12) through an inverter; a second compressor body (21) driven by a second motor (22) through an inverter; and an intercooler (30), on the uppe...  
WO/2017/167584A1
The invention relates to a vacuum pump which comprises rotor elements (44) in a suction chamber (22). An outlet channel (30) is connected to an exhaust pipe (58). For the purposes of silencing, sound expansion spaces (44) are provided in...  
WO/2017/164138A1
Provided are: a hermetic rotary compressor configured so that the pressure resistance of a hermetic case is increased and so that the hermetic case will not become large; and a refrigeration cycle device provided with the hermetic rotary...  
WO/2017/157408A1
The present invention relates to a hermetic terminal socket (1) for use in a hermetic compressor (2) comprising: a casing (3) for hermetically accommodating a compressor-kit (4) and a terminal plug (5) for supplying power to the compress...  
WO/2017/150877A1
Provided is a twin-cylinder pump for preventing one-sided wear and the leakage of fluid, which are caused by the eccentric rotation and rotary motion of each rocker shaft, and enabling replacement or repair to be simply and easily perfor...  
WO/2017/143410A1
The present invention is directed to method of operating a vacuum pump system, the method comprising the steps of: operating a primary vacuum pump 9 comprising a variable speed motor; - connecting at least two secondary vacuum pumps 10 i...  
WO/2017/144098A1
In order to optimize a compressor comprising a compressor housing, a scroll compressor unit which is arranged in the compressor housing with a first compressor body and a second compressor body which can be moved relative to the first co...  
WO/2017/146167A1
In the present invention, two compressors (41, 51) are configured such that respective pistons (45, 55) thereof are in opposite phase to each other. Each piston (45, 55) has a non-circular outer circumferential shape, while each cylinder...  
WO/2017/144499A1
The invention relates to a pump assembly (1), at least comprising a first housing (2), in which at least one first drive means (3) for conveying a fluid (4) is rotatably mounted, wherein a first drive shaft (5) of the first drive means (...  
WO/2017/140718A1
The scroll compression device includes a first scroll element (11) having a first base plate (13) and a first spiral wrap (14); a second scroll element (12) having a second base plate (15) and a second spiral wrap (16), one of the first ...  
WO/2017/129027A1
A rotary-pressing air pump, a pump body (1) thereof consisting of multiple rotary-pressing cavities (10) having identical structures and are mutually separated and coaxially disposed in a same axial direction, each rotary-pressing cavity...  
WO/2017/130916A1
An accumulator 40 is provided with: a vessel 20A inside which a refrigerant is subjected to gas-liquid separation; a plurality of pipes 21, 22 that extract the gas phase in the vessel 20A to the outside of the vessel 20A; and brackets 41...  
WO/2017/125048A1
Disclosed are a pump body for a piston compressor with a rotary cylinder and a compressor comprising same. The pump body for a piston compressor with a rotary cylinder comprises a cylinder jacket (10) and a cylinder (20) rotatably arrang...  
WO/2017/108812A3
Disclosed is a refrigerant compressor system comprising at least three compressors which are arranged in parallel between a suction line and a pressure line and each of which includes a lubricant sump unit; during operation, the compress...  
WO/2017/108812A2
Disclosed is a refrigerant compressor system comprising at least three compressors which are arranged in parallel between a suction line and a pressure line and each of which includes a lubricant sump unit; during operation, the compress...  
WO/2017/110386A1
This screw compressor (1) comprises: a screw compressor body (20); a motor (10) that drives the screw compressor body (20); a gearbox (30) that is interposed between the screw compressor body (20) and the motor (10) and that transmits th...  
WO/2017/104334A1
A screw compressor (2) equipped with: a first-stage compressor main body (4) and a second-stage compressor main body (6) that compress a fluid by means of screw rotors; a motor (8) that drives the first-stage compressor main body (4) and...  
WO/2017/103988A1
To provide a compressor for a dual refrigeration device for the purpose of achieving a small and light-weight dual refrigeration device, and a dual refrigeration device equipped with the compressor. A compressor relating to the present i...  
WO/2017/088586A1
A multi-tank dual-stage enthalpy increasing compressor comprises a lower cover plate (10), a lower flange (9), an upper division plate (4), a middle division plate (5), and at least one middle cavity volume formed between each pair of th...  
WO/2017/065032A1
This compressor is provided with a rotating shaft (12) having an eccentric part (26), an electric motor having a rotor (6) linked to the rotating shaft (12), a compression mechanism section driven by the electric motor via the rotating s...  
WO/2017/063588A1
A double-stage capacity-variable compressor and an air conditioning system having the same. The double-stage capacity-variable compressor comprises a first cylinder group (10) and a second cylinder group (20). The first cylinder group (1...  
WO/2017/061167A1
The objective of the present invention is to cool an electric motor effectively at all times by means of an injection refrigerant, and to enlarge the operable range, while preventing liquid compression, in a high-stage side compression m...  
WO/2017/055129A1
The invention relates to a multi-stage rotary vane pump comprising at least two rotor elements (14, 38). Said rotor elements are supported by a rotor shaft (36). According to the invention, said rotor elements (14, 38) and the rotor shaf...  
WO/2017/057848A1
The present invention relates to an electric compressor comprising: an inverter which is connected to an external power source via a connector unit to control a driving unit which compresses a fluid by driving a compression unit; and a p...  
WO/2017/048830A1
An intermediate discharge port in a scroll compressor and a method for controlling part- load efficiency of a scroll compressor are disclosed. The compressor includes a compressor housing; a non-orbiting scroll member and an orbiting scr...  
WO/2017/043471A1
[Problem] To make it possible for a scroll fluid machine that is a single-plate compressor-integrated expander to start easily and reliably and operate stably. [Solution] Coolant compressed in a compressing unit of a scroll fluid machine...  
WO/2017/038308A1
A two-stage screw compressor 2 is provided with a first-stage compressor body 4, a second-stage compressor body 6, and a control device 8. The first-stage compressor body 4 is driven by a first motor 12, the rotation speed of which is ca...  
WO/2017/031807A1
Disclosed is a non-coaxial vacuum pump with multiple driving chambers, comprising a plurality of independent vacuum driving chambers (1, 2, 3, 4), wherein the plurality of vacuum driving chambers (1, 2, 3, 4) are connected in series to f...  
WO/2017/031428A1
HVAC systems and methods for delivering highly efficient heating and cooling using ambient air as the working fluid. A plenum has an upstream inlet and a downstream outlet, each in fluid communication with a target space to be heated or ...  
WO/2017/028839A1
An electromotive vacuum pump for land and air vehicles having a cylindrical working chamber in which a slider is arranged between a suction opening and an outflow opening, which slider slides in a guiding slot of an eccentric rotary pist...  
WO/2017/024865A1
Disclosed is a compressor. The compressor comprises a crankshaft (10), and a first cylinder (20), a second cylinder (30) and a third cylinder (40) arranged sequentially in an axial direction of the crankshaft (10). The first cylinder (20...  
WO/2017/027613A1
An oil balancing system for a multiple compressor system is provided. The oil balancing system includes an oil equalization line disposed between a first compressor and a second compressor. A first solenoid valve is provided in the oil e...  
WO/2017/027688A1
A compressor (20) comprises: a housing assembly (22) having a plurality of ports including a suction port (24) and a discharge port (26); a male rotor (30) mounted for rotation about an axis (500); a female rotor (32) enmeshed with the m...  
WO/2017/015278A1
A scroll compressor with unfastened thrust plate includes a compressor housing and scroll compressor bodies disposed in the compressor housing. The scroll bodies include a fixed scroll body and a moveable scroll body. The fixed and movea...  
WO/2016/209725A1
Apparatus, e.g., including a pump or rotary device, having a discharge casing and a discharge casing insert. The discharge casing may be configured with a discharge flow pathway for providing a flow of effluent being pumped and discharge...  
WO/2016/207418A1
Disclosed is a device for fastening at least one piston to a shaft of a compression/expansion machine, said piston having the shape of a truncated torus, and the shaft being cylindrical. The disclosed device is characterized in that it c...  
WO/2016/194754A1
Provided is an air compression device comprising: a first compressor including a first port wall having a first suction port formed therein; a second compressor including a second port wall having a second suction port formed therein; an...  
WO/2016/189801A1
According to the present invention, a first groove section (222a) in which a first vane (23a) partitioning a first compression chamber (Va) is fitted in a slidable manner, and a first rotor side intake channel (224a) which guides, to the...  
WO/2016/181446A1
The present invention has a valve mechanism (50) that blocks an oil-supply flow path during non-compression operation and opens same during compression operation, said oil-supply flow path guiding lubricating oil that is inside a sealed ...  
WO/2016/168057A1
A spool compressor (220) comprises a housing (228, 244, 248) having: at least a first inlet port (30); and at least a first outlet port (32). A first spool is mounted for rotation of about a first spool axis (500). A second spool is moun...  

Matches 1 - 50 out of 7,333