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公开(公告)号：US11035351B2
公开(公告)日：2021-06-15
申请号：US16254955
申请日：2019-01-23
Applicant: Danfoss A/S
IPC: F04B11/00 , F04B1/20 , F04B1/2014 , F03C1/06 , F04B1/2021 , F01B3/00
Abstract: A hydraulic machine is described comprising a first part (1, 4) and a second part (7, 8), wherein the first part (1, 4) and the second part (7, 8) are movable relatively to each other in abutting relation, the first part (1, 4) comprises a pressure chamber (2) having a pressure chamber opening (6) in a contact face (5) contacting a sealing face (9) of the second part (7, 8), the second part (7, 8) comprises a low pressure area (10) connected to a low pressure opening (11) in the sealing face (9) and a high pressure area (12) connected to a high pressure opening (13) in the sealing face (9), wherein during a movement of the first part (1, 4) with respect to the second part (7, 8) in a moving direction (14) the pressure chamber opening (6) comes alternatingly in overlap with the low pressure opening (11) and the high pressure opening (13). Such a machine should be flexible in operation with low risk of damages caused by cavitation. To this end a throttling channel (15) in the second part (7, 8) connects the low pressure area (10) with an area in the sealing face (9) in moving direction in front of the low pressure opening (11).
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公开(公告)号：US12268991B2
公开(公告)日：2025-04-08
申请号：US18649157
申请日：2024-04-29
Applicant: Danfoss A/S
Inventor： Lars Bjarne Hilbrecht , Georg Herborg Enevoldsen
Abstract: A reverse osmosis (1) system having a first membrane unit (2) and at least a second membrane unit (3), the membrane units (2, 3) forming a chain of membrane units, the first membrane unit (2) having a first membrane (4) separating a first feed chamber (5) and a first permeate chamber (6), a first inlet (7) connected to the first feed chamber (5), a first permeate outlet (9) connected to the first permeate chamber (6), and a first concentrate outlet (8) connected to the first feed chamber (5), the second membrane unit (3) having a second membrane (10) separating a second feed chamber (11) and a second permeate chamber (12), a second inlet (13) connected to the second feed chamber (11), a second permeate outlet (15) connected to the second permeate chamber (12), and a second concentrate outlet (14) connected to the second feed chamber (11), wherein the concentrate outlet (8) of a membrane unit (2) in the chain of membrane units is connected to an inlet (13) of a following membrane unit (3) and a concentrate outlet (14) of at least one membrane unit (3) downstream the first membrane unit (2) in the chain of membrane units is connected to a hydraulic motor (18). In such a system the energy consumption should be optimized. To this end the hydraulic motor (18) is operatively connected to a first electric machine (21).
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公开(公告)号：US20240278178A1
公开(公告)日：2024-08-22
申请号：US18649157
申请日：2024-04-29
Applicant: Danfoss A/S
Inventor： Lars Bjarne Hilbrecht , Georg Herborg Enevoldsen
CPC classification number: B01D61/06 , B01D61/025 , B01D61/026 , B01D61/08 , B01D61/12 , B01D61/58 , B01D2313/243 , B01D2313/246 , B01D2317/022
Abstract: A reverse osmosis (1) system having a first membrane unit (2) and at least a second membrane unit (3), the membrane units (2, 3) forming a chain of membrane units, the first membrane unit (2) having a first membrane (4) separating a first feed chamber (5) and a first permeate chamber (6), a first inlet (7) connected to the first feed chamber (5), a first permeate outlet (9) connected to the first permeate chamber (6), and a first concentrate outlet (8) connected to the first feed chamber (5), the second membrane unit (3) having a second membrane (10) separating a second feed chamber (11) and a second permeate chamber (12), a second inlet (13) connected to the second feed chamber (11), a second permeate outlet (15) connected to the second permeate chamber (12), and a second concentrate outlet (14) connected to the second feed chamber (11), wherein the concentrate outlet (8) of a membrane unit (2) in the chain of membrane units is connected to an inlet (13) of a following membrane unit (3) and a concentrate outlet (14) of at least one membrane unit (3) downstream the first membrane unit (2) in the chain of membrane units is connected to a hydraulic motor (18). In such a system the energy consumption should be optimized. To this end the hydraulic motor (18) is operatively connected to a first electric machine (21).
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公开(公告)号：US20190234388A1
公开(公告)日：2019-08-01
申请号：US16254955
申请日：2019-01-23
Applicant: Danfoss A/S
CPC classification number: F04B1/2014 , F03C1/0644
Abstract: A hydraulic machine is described comprising a first part (1, 4) and a second part (7, 8), wherein the first part (1, 4) and the second part (7. 8) are movable relatively to each other in abutting relation, the first part (1, 4) comprises a pressure chamber (2) having a pressure chamber opening (6) in a contact face (5) contacting a sealing face (9) of the second part (7, 8), the second part (7, 8) comprises a low pressure area (10) connected to a low pressure opening (11) in the sealing face (9) and a high pressure area (12) connected to a high pressure opening (13) in the sealing face (9), wherein during a movement of the first part (1, 4) with respect to the second part (7, 8) in a moving direction (14) the pressure chamber opening (6) comes alternatingly in overlap with the low pressure opening (11) and the high pressure opening (13). Such a machine should be flexible in operation with low risk of damages caused by cavitation. To this end a throttling channel (15) in the second part (7. 8) connects the low pressure area (10) with an area in the sealing face (9) in moving direction in front of the low pressure opening (11).
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公开(公告)号：US20240390854A1
公开(公告)日：2024-11-28
申请号：US18665888
申请日：2024-05-16
Applicant: Danfoss A/S , Saltpower Holding APS
Inventor： Georg Herborg Enevoldsen , Lars Storm Pedersen
Abstract: A pressure retarded osmosis system (1) includes a membrane unit (2) having a high-pressure inlet connection (3) and a high-pressure outlet connection (4) on one side of a membrane arrangement (5) and a low-pressure inlet connection (6) and a low-pressure outlet connection (7) on the other side of the membrane arrangement (5). Such a pressure retarded osmosis system should be operated at a pressure higher than 140 bar. To this end the high-pressure inlet connection (3) is connected to a pressure exchanger (9), and the high-pressure outlet connection (4) is connected to a motor (20) and to a high-pressure inlet port (12) of the pressure exchanger (9), characterized in that the pressure exchanger (9) includes at least a first stage (10) and a second stage (11), the first stage (10) being arranged nearest to the high-pressure inlet connection (3) of the membrane unit (2), wherein the high-pressure inlet port (12) of the first stage (10) is connected to the high-pressure outlet connection (4) of the membrane unit (2) and a high-pressure inlet port (16) of the second stage (11) is provided with fluid having a lower pressure and a high-pressure outlet port (17) of the second stage (11) is connected to a low-pressure inlet port (14) of the first stage (10).
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Patent Agency Ranking
公开(公告)号：US12005395B2
公开(公告)日：2024-06-11
申请号：US17696433
申请日：2022-03-16
Applicant: Danfoss A/S
Inventor： Lars Bjarne Hilbrecht , Georg Herborg Enevoldsen
CPC classification number: B01D61/06 , B01D61/025 , B01D61/026 , B01D61/08 , B01D61/12 , B01D61/58 , B01D2313/243 , B01D2313/246 , B01D2317/022
Abstract: Reverse osmosis (1) system having a first membrane unit (2) and at least a second membrane unit (3), the membrane units (2, 3) forming a chain of membrane units, the first membrane unit (2) having a first membrane (4) separating a first feed chamber (5) and a first permeate chamber (6), a first inlet (7) connected to the first feed chamber (5), a first permeate outlet (9) connected to the first permeate chamber (6), and a first concentrate outlet (8) connected to the first feed chamber (5), the second membrane unit (3) having a second membrane (10) separating a second feed chamber (11) and a second permeate chamber (12), a second inlet (13) connected to the second feed chamber (11), a second permeate outlet (15) connected to the second permeate chamber (12), and a second concentrate outlet (14) connected to the second feed chamber (11), wherein the concentrate outlet (8) of a membrane unit (2) in the chain of membrane units is connected to an inlet (13) of a following membrane unit (3) and a concentrate outlet (14) of at least one membrane unit (3) downstream the first membrane unit (2) in the chain of membrane units is connected to a hydraulic motor (18). In such a system the energy consumption should be optimized. To this end the hydraulic motor (18) is operatively connected to a first electric machine (21).
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公开(公告)号：US20230043692A1
公开(公告)日：2023-02-09
申请号：US17878991
申请日：2022-08-02
Applicant: Danfoss A/S
Inventor： Stig Kildegaard Andersen , Poul Erik Hansen , Georg Herborg Enevoldsen , Kevin Evald
IPC: F04F13/00
Abstract: A pressure exchanger with a valve system includes a cylinder barrel (1), two valve plates (2) and two port plates (3, 4), wherein the cylinder barrel (1) has at least one cylinder (7) which accommodates a piston (8). The objective is to provide a pressure exchanger with low wear and a low maintenance effort. This objective is solved by a pressure exchanger including a piston (8) braking system and that the piston (8) includes a pressure relief arrangement.
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公开(公告)号：US12270422B2
公开(公告)日：2025-04-08
申请号：US17878991
申请日：2022-08-02
Applicant: Danfoss A/S
Inventor： Stig Kildegaard Andersen , Poul Erik Hansen , Georg Herborg Enevoldsen , Kevin Evald
IPC: F04F13/00
Abstract: A pressure exchanger with a valve system includes a cylinder barrel (1), two valve plates (2) and two port plates (3, 4), wherein the cylinder barrel (1) has at least one cylinder (7) which accommodates a piston (8). The objective is to provide a pressure exchanger with low wear and a low maintenance effort. This objective is solved by a pressure exchanger including a piston (8) braking system and that the piston (8) includes a pressure relief arrangement.
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公开(公告)号：US20250067592A1
公开(公告)日：2025-02-27
申请号：US18810872
申请日：2024-08-21
Applicant: Danfoss A/S
Abstract: A method of monitoring a rotating machine configured for energy transfer having a plurality of subsystems, each subsystem includes one cylinder. In the method a measurement signal of a vibration of the rotating machine is obtained and the vibration measurement signal (2) is sampled into a plurality of vibration subsignals (21, 22, 23, 24, 25), each vibration subsignal (21, 22, 23, 24, 25) corresponding to one full revolution of the rotating machine. A reference vibration subsignal (20) is determined based on an average of the plurality of vibration subsignals (21, 22, 23, 24, 25). The reference vibration subsignal (20) is sampled into a plurality of signal snippets (201, 202, 203, 204, 205), each signal snippet (201, 202, 203, 204, 205) assigned to one subsystem of the rotating machine. A cross-correlation analysis of the plurality of signal snippets (201, 202, 203, 204, 205) is performed for identifying a potential fault state of the rotating machine. The disclosure further discloses a rotating machine configured for energy transfer having a plurality of subsystems, each subsystem including one cylinder, is provided, wherein the rotating machine further includes a control unit adapted to perform a method according the disclosure.
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公开(公告)号：US20240100481A1
公开(公告)日：2024-03-28
申请号：US18347685
申请日：2023-07-06
Applicant: Danfoss A/S
Inventor： Stig Kildegaard Andersen , Poul Erik Hansen , Georg Herborg Enevoldsen
CPC classification number: B01D61/06 , B01D61/026 , B01D61/08 , B01D61/10 , B01D61/12 , C02F1/441 , B01D2313/243 , B01D2313/246 , B01D2313/70 , B01D2315/10 , B01D2317/022 , C02F2209/03 , C02F2301/04 , C02F2301/066 , C02F2303/10
Abstract: A system for reverse osmosis, RO, including a first RO stage (10) with a first feed inlet (11), a first brine outlet (12), and a first permeate outlet (13); a second RO stage (20) with a second feed inlet (21), a second brine outlet (22), and a second permeate outlet (23); and a pressure exchanger, PE, (40) connected between the second brine outlet (22) and the first feed inlet (11), wherein a first pressure difference Δp1 between the first brine outlet (12) and the second feed inlet (21) corresponds to a second pressure difference Δp2 between the second brine outlet (22) and the pressure exchanger (40). The invention further discloses a method for operating such a system for reverse osmosis (100).
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