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公开(公告)号：US20240360830A1
公开(公告)日：2024-10-31
申请号：US18681731
申请日：2022-07-15
CPC分类号： F04C29/025 , F04C18/10 , F04C18/16 , F04C2240/40 , F04C2240/50 , F04C2240/60
摘要： Compressor assembly including a motor having a motor shaft which drives at least one compressor rotor of a compressor element as well as an oil-pump, in which a compressor rotor includes a compressor rotor part which is mounted on a compressor rotor shaft which is connected to the motor shaft by means of a direct coupling so to form a composed driving shaft and wherein-in which the oil-pump is mounted directly on the composed driving shaft or on another compressor rotor shaft.
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公开(公告)号：US12123411B2
公开(公告)日：2024-10-22
申请号：US18121630
申请日：2023-03-15
申请人： Hitachi, Ltd.
发明人： Nae Hisano , Ryota Iijima , Kotaro Chiba , Takeshi Tsuchiya
CPC分类号： F04C15/0096 , F04C2/16 , F04C18/16 , F04C29/0014 , F04C29/021 , F04C29/028 , F04C2270/205
摘要： A liquid-cooled rotary compressor includes a compressor main body having a compression chamber formed by a fixed wall and a rotating wall and compressing gas, and a liquid injection path for injecting a coolant into the compression chamber, and adjusts a discharge flow rate by changing a rotational speed of the rotating wall. The compressor includes a liquid amount adjusting unit that adjusts an amount of the coolant supplied from the liquid injection path to the compressor main body according to a change in the rotational speed of the rotating wall, and a compressed gas supply path that supplies compressed gas to a downstream side of the liquid amount adjusting unit in the liquid injection path. The compressed gas is supplied from the compressed gas supply path to the liquid injection path according to the amount of the coolant supplied to the compressor main body.
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公开(公告)号：US12085078B2
公开(公告)日：2024-09-10
申请号：US18357465
申请日：2023-07-24
申请人： Gardner Denver, Inc.
CPC分类号： F04C18/084 , F04C14/08 , F04C18/16 , F04C2230/91 , F04C2230/92 , F04C2240/20 , F04C2240/40
摘要： A blower assembly includes, but is not limited to, a blower housing defining a blower chamber and including a gas inlet and a gas outlet; a first rotor positioned within the blower chamber and adapted for rotation therein, the first rotor including a first shaft and at least two lobes defining a first lobe profile; and a second rotor positioned within the blower chamber and adapted for rotation therein, the second rotor including a second shaft and at least two lobes defining a second lobe profile, wherein the first and second rotors are formed from a metal having a coefficient of thermal expansion from about 1 (10−6 in/in*K) to about 13 (10−6 in/in*K), and wherein at least one of the outer surface of the first rotor, the outer surface of the second rotor, or the blower chamber includes a coating.
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公开(公告)号：US12078172B2
公开(公告)日：2024-09-03
申请号：US18278431
申请日：2022-03-02
CPC分类号： F04C23/001 , F04C18/08 , F04C18/084 , F04C18/16 , F25B1/047 , F04C2240/20 , F05B2260/4031
摘要： A multi-stage screw compressor includes a plurality of stages of compressor bodies that compress a gas in sequence. Each of the stages of compressor bodies has both male and female rotors that are housed revolvably in a casing in a mutually meshing state. The male and female rotors each include a rotor lobe section having a suction-side end face and a discharge-side end face on one end and the other end thereof in the axial direction and having a twisted lobe extending from the suction-side end face to the discharge-side end face. The male and female rotors in a downstream-stage compressor body of at least one certain stage, excluding an upstream-stage compressor body as the first stage, among the plurality of stages of compressor bodies are each configured such that their lead increases from the suction side in the axial direction of the rotor lobe section toward the discharge side.
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公开(公告)号：US12066023B2
公开(公告)日：2024-08-20
申请号：US17914533
申请日：2021-05-10
申请人： Ateliers Busch SA
发明人： Didier Müller , Théodore Iltchev , Artur Bachmann
CPC分类号： F04C18/126 , F04C18/16 , F04C29/005 , F04C18/084 , F04C2220/12 , F04C2240/20 , F04C2240/80
摘要： The present invention concerns a dry vacuum pump comprising:
a drive device (1) comprising a drive shaft (3) at one end of which is fixed at least one drive wheel (4) provided to set in motion at least one belt (5);
at least two parallel rotors (7, 8) each having a shaft (9, 10) provided with a rotor element (11, 12), this shaft (9, 10) being able to be driven in rotation by the belt (5) and being equipped at one of its axial ends with a toothed wheel (13, 14),
this pump having the special features that:
the drive wheel (4) and the belt (5) are smooth;
each shaft (9, 10) of the rotor (7, 8) comprises at least one smooth section (16, 17) arranged to co-operate with the belt (5), and
the toothed wheels (13, 14) of the shafts (9, 10) of the rotor (7, 8) are dimensioned and arranged to mesh with one another.-
公开(公告)号：US12000398B2
公开(公告)日：2024-06-04
申请号：US17791180
申请日：2021-01-07
CPC分类号： F04C18/16 , F04C28/12 , F25B41/39 , F25B2339/047 , F25B2400/13 , F25B2600/0253
摘要： A volume ratio control system for a compressor includes a chamber formed within a housing of the compressor, a piston disposed within the chamber, where the piston is configured to separate the chamber into at least a first portion fluidly coupled to a low pressure side of the compressor and a second portion fluidly coupled to a high pressure side of the compressor, and a biasing device disposed within the chamber, where the biasing device is configured to adjust a position of the piston in response to a pressure differential between the low pressure side of the compressor and the high pressure side of the compressor falling below a threshold value.
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公开(公告)号：US11994129B2
公开(公告)日：2024-05-28
申请号：US16355106
申请日：2019-03-15
CPC分类号： F04C29/026 , F04C18/16 , F04C29/02 , F04C29/025 , F04C29/04 , F04C2240/30 , F04C2240/809 , F04C2270/19 , F04C2270/24 , F04C2280/02 , F05C2251/12
摘要： A screw compressor for a utility vehicle has a housing, wherein, in the operationally ready and assembled state of the screw compressor, an oil sump is provided in the housing. A magnet is arranged in the oil sump.
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公开(公告)号：US11971035B2
公开(公告)日：2024-04-30
申请号：US16762094
申请日：2018-11-06
CPC分类号： F04C28/08 , F04C18/16 , F04C28/14 , F04C29/12 , F04C2210/228 , F04C2240/30 , F04C2250/102 , F04C2270/185
摘要： The present disclosure relates to a compressor having a first rotor and a second rotor disposed within a housing, where the first rotor is configured to rotate about a first axis of the housing and the second rotor is configured to rotate about a second axis of the housing. The first rotor and the second rotor engage with one another such that rotation of the first rotor and the second rotor pressurizes a vapor within the housing. The compressor includes an end plate coupled to a discharge end of the housing, where the end plate includes a variable opening configured to discharge a flow of the vapor from the housing. The end plate also includes a first movable member and a second movable member that are configured to increase or decrease a cross-sectional area of the variable opening to adjust the flow of the vapor.
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公开(公告)号：US11939978B2
公开(公告)日：2024-03-26
申请号：US17392470
申请日：2021-08-03
发明人： Marcus Blumhardt
CPC分类号： F04C18/16 , F04C29/02 , F04C2210/22 , F04C2240/20 , F04C2240/50 , F04C2240/81 , F04C2270/052
摘要： In order to improve a machine for depressurizing or compressing substantially gaseous media, comprising a machine casing and at least one screw rotor, which is arranged in a screw rotor bore in the machine casing, extends between a low-pressure side and a high-pressure side of the screw rotor bore, cooperates with the substantially gaseous medium and is mounted on both sides in the machine casing by means of a respective bearing set, and a motor/generator unit that is coupled or couplable to the at least one screw rotor, it is proposed that the at least one screw rotor should be provided with at least one axial support bearing that axially supports the at least one screw rotor such that a high-pressure end face of the at least one screw rotor is guided, without making contact, to an end wall, which faces this end face, of the machine casing that receives the at least one screw rotor.
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10.发明授权公开(公告)号：US11920594B2
公开(公告)日：2024-03-05
申请号：US17277288
申请日：2018-12-26
发明人： Ziwen Xing , Minglong Zhou , Wenqing Chen , Chuang Wang , Zhilong He
CPC分类号： F04C29/0035 , F04C18/16 , F04C28/12 , F16K3/26 , F04C2250/102
摘要： A screw compressor slide valve with gas pulsation attenuation function includes valve walls and internal through holes. A screw compressor includes the screw compressor slide valve. A part of exhausted gas of the screw compressor is directly discharged from an exhaust port to an exhaust chamber to form a main exhaust flow channel; another part of the exhausted gas is discharged from the exhaust port into the exhaust chamber after being delayed by the internal through holes, which forms a branched exhaust flow channel. Since the branched exhaust flow channel is longer than the main exhaust flow channel, when the gas pulsation in the branched exhaust flow channel lags behind that in the main exhaust flow channel by 180-degree in phase, two gas pulsations in the two flow channels are offset due to opposite gas pulsation phases, which attenuates the gas pulsation, thereby suppressing induced vibration and noise.
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