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公开(公告)号：US20170191703A1
公开(公告)日：2017-07-06
申请号：US15327076
申请日：2015-05-27
Applicant: DANFOSS A/S
Inventor： Carsten Mølhede Thomsen , Klaus Halldorsson , Bjarke Skovgård Dam
CPC classification number: F25B1/10 , F25B41/062 , F25B2400/13 , F25B2500/12 , F25B2500/13
Abstract: A pulsation damper (1) comprising a first tube (4) and a second tube (5), e.g. arranged concentrically with respect to each other, the first tube (4) being arranged inside the second tube (5). The second tube (5) has a closed end, and the first tube (4) has a second end (7) arranged at a distance from the closed end (8) of the second tube (5). The first tube (4) is fluidly connected to the second tube (5) via the second end (7). The pulsation damper is capable of damping pressure pulses within a broad frequency range. Furthermore a vapour compression system (14) having a pulsation damper (1) arranged in an economizer line (20).
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公开(公告)号：US20180202566A1
公开(公告)日：2018-07-19
申请号：US15743322
申请日：2016-05-26
Applicant: DANFOSS A/S
Inventor： Behzad Parastar , Detlef Matzen , Klaus Halldorsson , Simon Ahrens Lassen
CPC classification number: F16K17/06 , F16K15/025 , F16K27/02 , F16K27/029 , F16K31/04 , F16K31/088 , F16K31/10
Abstract: The invention relates to a pilot valve arrangement (1) comprising a pilot valve device (2) which comprises a pilot valve element (13), a pilot valve seat (14) cooperating with the pilot valve element (13) and a presetting mechanism for presetting an opening pressure of the pilot valve element (13), the pilot valve arrangement (1) further comprising a presetting mechanism actuating device (3) which comprises an actuator element (17) adapted to create an actuating force in order to actuate the presetting mechanism in the pilot valve device so as to preset the opening pressure. According to the invention, the pilot valve arrangement (1) comprises a contactless force coupling arrangement adapted to transfer the actuating force from the presetting mechanism actuating device (3) to the pilot valve device (2). An inventive pilot valve device (2) is disclosed and claimed as well. The invention allows to improve maintenance and safety concerning the devices mentioned above.
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公开(公告)号：US20180045443A1
公开(公告)日：2018-02-15
申请号：US15554857
申请日：2015-12-08
Applicant: Danfoss A/S
Inventor： Klaus Halldorsson , Bjarke Skovgard Dam
CPC classification number: F25B41/04 , F16K27/003 , F16K27/02
Abstract: A refrigerant valve arrangement (1) is shown comprising a housing (2) having an inlet (3) and an outlet (4) and defining a main flow direction (5) a first valve having a first valve axis (11), and a second valve having a second valve axis (17). Such a refrigerant valve arrangement should have a low pressure drop between inlet and outlet. To this end said first valve axis (11) encloses a first angle (α) smaller than 90° with said main flow direction (5) and/or said second valve axis (17) encloses a second angle (β) larger than 90° with said main flow direction (5).
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Patent Agency Ranking
公开(公告)号：US11555550B2
公开(公告)日：2023-01-17
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：US10443750B2
公开(公告)日：2019-10-15
申请号：US15743322
申请日：2016-05-26
Applicant: DANFOSS A/S
Inventor： Behzad Parastar , Detlef Matzen , Klaus Halldorsson , Simon Ahrens Lassen
Abstract: The invention relates to a pilot valve arrangement (1) comprising a pilot valve device (2) which comprises a pilot valve element (13), a pilot valve seat (14) cooperating with the pilot valve element (13) and a presetting mechanism for presetting an opening pressure of the pilot valve element (13), the pilot valve arrangement (1) further comprising a presetting mechanism actuating device (3) which comprises an actuator element (17) adapted to create an actuating force in order to actuate the presetting mechanism in the pilot valve device so as to preset the opening pressure. According to the invention, the pilot valve arrangement (1) comprises a contactless force coupling arrangement adapted to transfer the actuating force from the presetting mechanism actuating device (3) to the pilot valve device (2). An inventive pilot valve device (2) is disclosed and claimed as well. The invention allows to improve maintenance and safety concerning the devices mentioned above.
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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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