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51.发明申请公开(公告)号：US20190299132A1
公开(公告)日：2019-10-03
申请号：US16461938
申请日：2017-11-15
Applicant: Danfoss A/S
Inventor： Jan Prins , Frede Schmidt , Kenneth Bank Madsen , Kristian Fredslund
IPC: B01D35/147 , F25B1/10 , F25B49/02
Abstract: A method for controlling a vapour compression system (1) is disclosed. Malfunctioning of a gas bypass valve (8) is registered. An actual opening degree of the gas bypass valve (8) is derived, and a target opening degree of the gas bypass valve (8) is derived, based on one or more control parameters of the vapour compression system (1). The actual opening degree is compared to the target opening degree, and the vapour compression system (1) is controlled based on the comparison, and in order to match a mass flow of gaseous refrigerant through the gas bypass valve (8) to the actual opening degree of the gas bypass valve (8).
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公开(公告)号：US10288051B2
公开(公告)日：2019-05-14
申请号：US15187940
申请日：2016-06-21
Applicant: Danfoss A/S
Inventor： Stig Kildegaard Andersen , Poul Erik Hansen , Erik Haugaard
Abstract: A hydraulic machine arrangement (1) is described having a housing (5), a working section and a hollow inside said housing (5), a supply port arrangement LPin, HPin, LPout connected to said working area, and a leakage path (7) between said working section and said hollow. It should be possible to detect wear with simple means. To this end, said housing (5) is provided with a leakage port (8) connected to said hollow.
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公开(公告)号：US10208994B2
公开(公告)日：2019-02-19
申请号：US15840573
申请日：2017-12-13
Applicant: Danfoss A/S
Inventor： Kenneth Bank Madsen , Leif Skovvang Nielsen , Flemming Morten Schmidt , Frede Schmidt
Abstract: The invention relates to a method for configuring, on a control unit, operating parameters of a plurality of devices of a refrigeration system. A user selects on the control unit, among the plurality of devices of the refrigeration system, a first device to configure. Information of valid configurable operating parameters of the first device is provided on the control unit. The user selects at least one of the valid configurable operating parameters of the first device, thereby configuring the first device. Information stored about operating parameters of other devices of the refrigeration system, based on the configuration of the first device, is then provided on the control unit. Finally, the user confirms, on the control unit, one or more operating parameters of one or more of the other devices, thereby configuring the one or more other devices. The invention also relates to a control unit and a refrigeration system.
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公开(公告)号：US20190040865A1
公开(公告)日：2019-02-07
申请号：US16075168
申请日：2016-02-04
Inventor： Joost Brasz , William Bilbow , Farrukh Alvi , Erik Fernandez , Jennifer Gavin
IPC: F04D17/12
Abstract: A centrifugal compressor according to an exemplary aspect of the present disclosure includes, among other things, an impeller provided in a main flow path and configured to pressurize a main flow of fluid. The compressor also includes a secondary flow path configured to provide a secondary flow by recirculating a portion of the main flow. The amount of the main flow that becomes the secondary flow is less than or equal to 15%. A method is also disclosed.
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Patent Agency Ranking
公开(公告)号：US10180195B2
公开(公告)日：2019-01-15
申请号：US14900652
申请日：2014-06-26
Applicant: DANFOSS A/S
Inventor： Leo Finn Jensen
Abstract: A solenoid valve includes a housing, having an inlet and an outlet, wherein the solenoid valve also includes a valve element and a valve seat. To provide a solenoid valve to be used with high maximum operating pressure differences between inlet and outlet, the solenoid valve includes at least one progressive spring, wherein the valve element is forced by the at least one progressive spring. Thereby, the spring force acting on the valve element in the closed position of the valve may be decreased, while still retaining a large spring force in the opened position of the solenoid valve.
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公开(公告)号：US20190003607A1
公开(公告)日：2019-01-03
申请号：US16065976
申请日：2017-01-03
Applicant: Danfoss A/S
Abstract: The invention relates to a capsule for a valve as well as to a valve comprising such a capsule. The task of the present invention is to provide a valve in which tight tolerances for construction can be achieved and the assembly of the valve is simplified. According to the present invention the above task is solved by a capsule (1) for a valve comprising at least one diaphragm (2), a valve seat (3), a capsule inlet (5) and a capsule outlet (6). The valve seat (3) is openable and closable to permit or stop a fluid flow from the capsule inlet (5) to the capsule outlet (6). The above task is also solved by a capsule (1) for a valve that comprises at least one diaphragm (2), a valve seat (3), a capsule inlet (5) and a capsule outlet (6), wherein the capsule (1) is structured and arranged to control the position of a pilot valve element external to the capsule (1). The above task is also solved by a valve (10) comprising a valve housing (15), wherein a capsule (1) of the above kind is arranged in the valve housing (15).
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公开(公告)号：US10170226B2
公开(公告)日：2019-01-01
申请号：US15503040
申请日：2015-06-23
Applicant: DANFOSS A/S
Inventor： Claus Cornett Nielsen , Kristian Melgaard Jørgensen
Abstract: A spool arrangement 1 is described comprising a spool member (47) having a coil embedded in a spool housing (48) made of plastic material and protection means (2, 13, 28) comprising at least two parts together forming a receiving volume (46), said spool member (47) being located in said receiving volume. Such a spool arrangement (1) should be used in an environment in which there is a risk of explosions. To this end said parts form protective walls on all sides of said receiving volume (46).
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公开(公告)号：US10145366B2
公开(公告)日：2018-12-04
申请号：US15017764
申请日：2016-02-08
Applicant: Danfoss A/S
Inventor： Stig Kildegaard Andersen , Erik Haugaard , Palle Olsen , Poul Erik Hansen
Abstract: A hydraulic arrangement (1) is provided comprising a pressure exchanger (2) having an axis (3) of rotation, and a booster pump (4), said pressure exchanger (2) and said booster pump (4) being connected to each other. Such a hydraulic arrangement should have a good efficiency. To this end a single connection flange (5) is provided between said pressure exchanger (2) and the booster pump (4).
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公开(公告)号：US20180320944A1
公开(公告)日：2018-11-08
申请号：US15763988
申请日：2016-10-14
Applicant: DANFOSS A/S
Inventor： Jan PRINS , Frede SCHMIDT , Kenneth Bank MADSEN , Kristian FREDSLUND
CPC classification number: F25B49/022 , F25B5/02 , F25B6/02 , F25B9/08 , F25B2341/0012 , F25B2400/075 , F25B2400/16 , F25B2400/23 , F25B2500/28
Abstract: A method for controlling a vapour compression system (1) is disclosed. The vapour compression system (1) comprises an ejector (6) and a liquid separating device (10) arranged in a suction line. At least one evaporator (9) is allowed to be operated in a flooded state. A flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is detected, and it is determined whether or not the flow rate is sufficient to remove liquid refrigerant produced by the evaporator(s) (9) being allowed to be operated in a flooded state from the liquid separating device (10). In the case that it is determined that the flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is insufficient to remove liquid refrigerant produced by the evaporator(s) (9), the flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) is increased, and/or a flow rate of liquid refrigerant from the evaporator(s) (9) to the liquid separating device (10) is decreased.
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