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61. 发明授权

US11274868B2 Expansion unit for installation in a refrigerant circuit 有权
公开(公告)号：US11274868B2
公开(公告)日：2022-03-15
申请号：US16524874
申请日：2019-07-29
申请人： BITZER Kuehlmaschinenbau GmbH
发明人： Julian Karbiner , Oliver Javerschek , Joerg Nickl
IPC分类号： F25B40/02 , F25B49/02 , F04B3/00 , F25B41/40
摘要： The invention relates to an expansion unit for installation in a refrigerant circuit, including an expansion system having an subcooling unit for subcooling a mass flow of a refrigerant that is supplied to the expansion unit, having an expansion/compression unit including an expander stage and a compressor stage, having a branching point that splits off a subcooling mass flow from a total mass flow supplied to the expansion unit and that is connected to a supply conduit that guides the subcooling mass flow to an inlet of the subcooling unit, having an expansion member that expands the subcooling mass flow to a subcooling pressure, having a connection conduit that supplies the subcooling mass flow exiting from the subcooling unit to the compression stage, which for its part compresses the subcooling mass flow to a return high pressure, and having an electrically operated controller that detects an ambient temperature and/or a temperature of the mass flow of refrigerant that is supplied to the expansion unit and/or the expander stage, and in accordance with this temperature adjusts an inlet pressure of the expansion unit or the expansion/compression unit by controlling the subcooling mass flow using the expansion member that is electrically controlled by the controller.

62. 发明授权

US10914301B2 Refrigerant compressor 有权
公开(公告)号：US10914301B2
公开(公告)日：2021-02-09
申请号：US15485955
申请日：2017-04-12
申请人： BITZER Kuehlmaschinenbau GmbH
发明人： Henrik Thomsen Schmidt , Dieter Hildebrandt , Andre Beier
IPC分类号： F04B49/06 , F04B35/04 , H02K5/22 , F25B49/02 , F04B39/12 , F04B51/00 , H02K11/33
摘要： In order to improve a refrigerant compressor, including a compressor unit having a compressor housing and at least one compressor element that is arranged in the compressor housing, for compressing refrigerant, and further including a drive unit having a drive housing and an electric motor that is arranged in the drive housing and connector terminals that are arranged on the drive housing, for the electric motor, and further including an electronic functional unit, such that the connection between the refrigerant compressor and the electronic functional unit is achievable as simply as possible, it is proposed that the connector terminals should be provided in a housing that is arranged on the drive housing, and that an electronic functional unit which performs at least one compressor function should be provided in the housing.

63. 发明授权

US10900698B2 Method for operating a refrigeration unit 有权
公开(公告)号：US10900698B2
公开(公告)日：2021-01-26
申请号：US15438003
申请日：2017-02-21
申请人： BITZER Kuehlmaschinenbau GmbH
发明人： Manuel Saboy
IPC分类号： F25B49/02
摘要： A method for operating a refrigeration unit that includes controlling overall compressor output of the refrigeration unit having at least one state variable. The method includes operating the compressor unit either in a first mode with a first overall compressor output in which the state variable decreases or in a second mode with a second overall compressor output in which the state variable increases, wherein the first and second modes alternate. The method further includes transitioning from the second mode to the first mode when the measured state variable reaches or exceeds a first threshold, and transitioning from the first mode to the second mode when the measured state variable reaches or falls below a second threshold. The difference between the first value and the second value corresponds to the greatest of the state variable differences that result over the respective minimum duration in the first or second mode.

64. 发明授权

US10883748B2 Method for controlling a compressor system 有权
公开(公告)号：US10883748B2
公开(公告)日：2021-01-05
申请号：US16044665
申请日：2018-07-25
申请人： BITZER Kuehlmaschinenbau GmbH
发明人： Manuel Saboy , Kresten Kjaer Sørensen , Morten Heinild
IPC分类号： F25B1/10 , F25B49/02
摘要： Method for controlling a compressor system, arranged in a heat pumping circuit, said compressor system being designed to be operated at at least two different compressor capacity stages, said compressor capacity stages being adjusted by a capacity adjustment system enabling switching from one compressor capacity stage to another compressor capacity stage, said capacity adjustment system being controlled by a capacity selection signal defining the compressor capacity stage to be selected, said method comprising determining a capacity set value, determining a decision quantity on the basis of said capacity set value, determining a calculated capacity average value on the basis of capacity selection signals generated before, comparing said calculated capacity average value with said decision quantity and changing said compressor capacity stage to the next higher stage if the calculated capacity average value is below the decision quantity or changing said compressor capacity stage to the next lower stage if the calculated capacity average value is above the decision quantity, or not changing said compressor capacity stage if the calculated capacity average value meets said decision quantity.

65. 发明授权

US10804834B2 Method for selecting a frequency converter for a refrigerant compressor unit 有权
公开(公告)号：US10804834B2
公开(公告)日：2020-10-13
申请号：US16168108
申请日：2018-10-23
申请人： Bitzer Kuehlmaschinenbau GmbH
发明人： John Gibson , Tobias Hieble , Julian Pfaffl , Juergen Nill , Ferdinand Breithuth
IPC分类号： H02P27/04 , H02P23/00 , H02P29/032 , F25B49/02 , H02P27/06 , H02P29/02
摘要： In order to improve a method for selecting a frequency converter for a refrigerant compressor unit that includes a refrigerant compressor and an electric drive motor such that the frequency converter is selected in a manner for optimized use, it is proposed that a working state suitable for operation of the refrigerant compressor unit should be selected within an application field of an application graph of the refrigerant compressor, that an operating frequency for this selected working state should be selected, and that a working state operating current value that corresponds to the selected working state and the selected operating frequency should be determined from drive data, for operation of the refrigerant compressor unit.

66. 发明申请

US20200291940A1 METHOD OF MAKING A TWO-PIECE COUNTERWEIGHT FOR A SCROLL COMPRESSOR 审中-公开
公开(公告)号：US20200291940A1
公开(公告)日：2020-09-17
申请号：US16887745
申请日：2020-05-29
申请人： Carl F. Stephens , Lauren A. Markley
发明人： Carl F. Stephens , Lauren A. Markley
IPC分类号： F04C18/02 , F04C29/00 , F04C23/00
摘要： A method of manufacturing a two-piece counterweight for a scroll compressor is provided. The method includes molding an outer plate, and molding a base having a first opening configured to receive a scroll compressor drive shaft having a longitudinal axis. The method further includes configuring the base for assembly and attachment to the drive shaft. The method also includes attaching the outer plate to the base such that the outer plate is axially offset from the base. In a particular embodiment of this method, the base and outer plate are molded from powdered metal. In certain embodiments, the base and outer plate include one or more openings aligned to permit attachment by inserting a mechanical fastener through the aligned openings. In alternate embodiments, the base and outer plate are attached via brazing or welding.

67. 发明授权

US10760831B2 Oil distribution in multiple-compressor systems utilizing variable speed 有权
公开(公告)号：US10760831B2
公开(公告)日：2020-09-01
申请号：US15004276
申请日：2016-01-22
申请人： Bruce A. Fraser , Terry Nares
发明人： Bruce A. Fraser , Terry Nares
IPC分类号： F25B31/00 , F25B49/02 , F25B1/10 , F04B41/06 , F04B39/02 , F04B49/08 , F04B49/20 , F04C23/00
摘要： A method of operating a multiple-compressor refrigeration system is provided. This method includes the steps of supplying, via a common supply line, refrigerant gas and oil to a plurality of compressors coupled in series, and attaching an oil flow conduit between adjacent compressors of the plurality of compressors. The oil flow conduit is configured to move oil from a compressor with a relatively higher pressure to a compressor with a relatively lower pressure. The method further includes controlling the pressure for each of the plurality of compressors by regulating a speed at which each of the plurality of compressors operates in order to maintain a pressure differential between the adjacent compressors to facilitate the flow of oil from the compressor with the relatively higher pressure to the compressor with the relatively lower pressure.

68. 发明授权

US10697672B2 Storage unit and tempering system for a storage unit 有权
公开(公告)号：US10697672B2
公开(公告)日：2020-06-30
申请号：US15460925
申请日：2017-03-16
申请人： BITZER Kuehlmaschinenbau GmbH
发明人： Kari Saikkonen , Franck Repentin , Axel Friedrich , Andreas Becker
IPC分类号： F25B27/00 , F25B47/02 , F25D11/00 , F25B40/02 , F25D17/06 , F25D21/08 , F25D29/00 , F25D31/00 , F25B40/00
摘要： For creating a storage unit comprising a container housing enclosing a storage volume for receiving freight and a gaseous medium surrounding said freight, said storage unit further comprising a tempering system provided with a tempering unit associated with said storage volume for maintaining a flow of said gaseous medium circulating in said storage volume and passing through said tempering unit in order to be maintained at a defined or set temperature, said tempering unit comprising an internal heat exchanger arranged in said flow of gaseous medium passing through said tempering unit, said tempering system being provided with a refrigerant circuit comprising said internal heat exchanger, an external heat exchanger exposed to ambient air surrounding said container housing which operates reliably and cost efficient under the aforementioned condition, as well as a compressor unit for compressing refrigerant, and said tempering system being further provided with an engine for driving said compressor unit in an independent power source mode and said tempering system being further provided with an electric motor/generator unit mechanically coupled to said compressor unit, and said compressor unit and said motor/generator unit being commonly driven by said engine in said independent power source mode.

69. 外观设计

USD829771S1 Compressor 有权
公开(公告)号：USD829771S1
公开(公告)日：2018-10-02
申请号：US29599787
申请日：2017-04-06
申请人： BITZER Kuehlmaschinenbau GmbH
设计人： Roni Loerch , Petra Sadlers , Patrick Merkt

70. 发明授权

US09777731B2 Duct-mounted suction gas filter 有权
公开(公告)号：US09777731B2
公开(公告)日：2017-10-03
申请号：US14741137
申请日：2015-06-16
申请人： Kurt W. R. Bessel , Ronald J. Duppert , Bruce A. Fraser
发明人： Kurt W. R. Bessel , Ronald J. Duppert , Bruce A. Fraser
IPC分类号： F01C1/02 , F03C2/00 , F03C4/00 , F04C2/00 , F04C29/00 , F04C18/02 , F04C29/12 , F04C29/02 , F04C23/00
CPC分类号： F04C29/0092 , F04C18/0215 , F04C23/008 , F04C29/02 , F04C29/026 , F04C29/12 , F04C2240/30 , F04C2240/809
摘要： A compressor for compressing fluid is provided. The compressor includes a housing having a housing inlet for receiving fluid and a housing outlet for discharging the fluid. A compressing mechanism is adapted to compress the fluid toward the housing outlet. The compressing mechanism is disposed in the housing. A drive unit is operatively connected to the compressing mechanism for driving the compressing mechanism to compress fluid. A suction duct is disposed in the housing. The suction duct extends vertically downward from the housing inlet toward a sump defined in the housing. The suction duct is configured for attachment to a motor housing. The suction duct has a duct inlet fluidically connected with the housing inlet, and defines a passage fluidically connecting the duct inlet with an interior cavity of the housing. A suction gas filter disposed in the suction duct, and having a filter screen positioned downstream of the duct inlet.

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