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公开(公告)号：US10895259B2
公开(公告)日：2021-01-19
申请号：US15958858
申请日：2018-04-20
Applicant: TRANE INTERNATIONAL INC.
Inventor： Alberto Scala
Abstract: This disclosure relates generally to economized screw compressors. Particularly, this synchronized economizer ports on both the female and the male rotor sides of a compressor housing. The economizer ports simultaneously provide gas to a compression chamber formed by male and female rotors. The synchronized male side and female side economizer ports are configured to open and close at opening and closing angles, respectively. The opening angles and the closing angles each differ by at most half of an angular width of a male lobe of the compressor.
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公开(公告)号：US20220299031A1
公开(公告)日：2022-09-22
申请号：US17720818
申请日：2022-04-14
Applicant: TRANE INTERNATIONAL INC.
Inventor： Alberto Scala
Abstract: A screw compressor, method of operating, and refrigerant circuit are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet that compresses the working fluid. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. A valve assembly is configured to vary a location at which the compression mechanism compresses the working fluid, the valve assembly being disposed to modify a suction location of the screw compressor.
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公开(公告)号：US11306721B2
公开(公告)日：2022-04-19
申请号：US16232687
申请日：2018-12-26
Applicant: TRANE INTERNATIONAL INC.
Inventor： Alberto Scala
Abstract: A screw compressor, method of operating, and refrigerant circuit are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet that compresses the working fluid. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. A valve assembly is configured to vary a location at which the compression mechanism compresses the working fluid, the valve assembly being disposed to modify a suction location of the screw compressor.
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公开(公告)号：US11022122B2
公开(公告)日：2021-06-01
申请号：US15611137
申请日：2017-06-01
Applicant: TRANE INTERNATIONAL INC.
Inventor： Scott M. Branch , Timothy S. Hagen , Jerry A. Rood , Alberto Scala
Abstract: A screw compressor includes a compressor housing defining a working chamber, the housing including a plurality of bores; a first rotor having helical threads, the first rotor being housed in a first of the plurality of bores; a second rotor having helical threads intermeshing with the helical threads of the first rotor, the second rotor being housed in a second of the plurality of bores; an inlet port that receives a fluid to be compressed; an outlet port that receives a compressed fluid; and an intermediate discharge port disposed between the compression chamber and the outlet port, the intermediate discharge port including a sealing member and a biasing mechanism, fluid flow being prevented between the compression chamber and the intermediate discharge port when in a flow-blocked state, and fluid flow being enabled from the compression chamber through the intermediate discharge port when in a flow-permitted state.
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公开(公告)号：US20200208638A1
公开(公告)日：2020-07-02
申请号：US16232717
申请日：2018-12-26
Applicant: TRANE INTERNATIONAL INC.
Inventor： Keith Adam Novak , Alberto Scala , Timothy S. Hagen , Brian Hemmersbach
Abstract: A screw compressor, refrigerant circuit, lubrication method are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. The screw compressor includes a slide valve that is movable between a first position and a second position. The first position corresponds to a high volume ratio and the second position corresponds to a low volume ratio. The slide valve includes a plurality of lubricant passageways selectively connectable to a lubricant source. A first of the plurality of lubricant passageways is configured to be selected to provide lubricant at the high volume ratio, and a second of the plurality of lubricant passageways is configured to be selected to provide lubricant at the low volume ratio.
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Patent Agency Ranking
公开(公告)号：US20190323503A1
公开(公告)日：2019-10-24
申请号：US15958858
申请日：2018-04-20
Applicant: TRANE INTERNATIONAL INC.
Inventor： Alberto Scala
Abstract: This disclosure relates generally to economized screw compressors. Particularly, this synchronized economizer ports on both the female and the male rotor sides of a compressor housing. The economizer ports simultaneously provide gas to a compression chamber formed by male and female rotors. The synchronized male side and female side economizer ports are configured to open and close at opening and closing angles, respectively. The opening angles and the closing angles each differ by at most half of an angular width of a male lobe of the compressor.
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公开(公告)号：US11841020B2
公开(公告)日：2023-12-12
申请号：US17720818
申请日：2022-04-14
Applicant: TRANE INTERNATIONAL INC.
Inventor： Alberto Scala
CPC classification number: F04C28/18 , F04C18/16 , F04C28/12 , F25B31/026 , F25B2600/0262
Abstract: A screw compressor, method of operating, and refrigerant circuit are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet that compresses the working fluid. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. A valve assembly is configured to vary a location at which the compression mechanism compresses the working fluid, the valve assembly being disposed to modify a suction location of the screw compressor.
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公开(公告)号：US10935292B2
公开(公告)日：2021-03-02
申请号：US16008883
申请日：2018-06-14
Applicant: TRANE INTERNATIONAL INC.
Inventor： Kevin P. Hughes , Robert S. Bakkestuen , Timothy S. Hagen , Keith Adam Novak , Daniel R. Dreher , Alberto Scala
Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The HVACR system includes a refrigerant circuit. The refrigerant circuit includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected. A controller is electronically connected to the compressor. The controller is configured to prevent the compressor from operating at a speed that is less than a minimum speed limit. A lubricant separator has an inlet fluidly connected between the compressor and the condenser and a plurality of outlets. A first of the plurality of outlets is fluidly connected to the condenser. A second of the plurality of outlets is fluidly connected to one or more components of the compressor to provide a lubricant to the one or more components.
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公开(公告)号：US10746176B2
公开(公告)日：2020-08-18
申请号：US15620516
申请日：2017-06-12
Applicant: TRANE INTERNATIONAL INC.
Inventor： Jay H. Johnson , Alberto Scala
IPC: F04C28/08 , F04C28/12 , F04B49/20 , F04B49/03 , F04B49/06 , F25B49/02 , F04C18/16 , F04C28/24 , F04C28/28
Abstract: Control systems and methods for increasing efficiency of a compressor while the compressor capacity exceeds compressor load, by using a mechanical unloader such as a slide valve to reduce the internal volume ratio of the compressor and allow a more efficient speed to be maintained by a variable frequency drive (VFD) while reducing the compressor capacity based on the load. Control systems include the VFD, a controller for the VFD and the mechanical unloader, and temperature sensors. Compressor embodiments further include one or more compressors and mechanical unloaders operated by the control systems.
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公开(公告)号：US20200208637A1
公开(公告)日：2020-07-02
申请号：US16232687
申请日：2018-12-26
Applicant: TRANE INTERNATIONAL INC.
Inventor： Alberto Scala
Abstract: A screw compressor, method of operating, and refrigerant circuit are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet that compresses the working fluid. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. A valve assembly is configured to vary a location at which the compression mechanism compresses the working fluid, the valve assembly being disposed to modify a suction location of the screw compressor.
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