公开(公告)号：US4955194A

公开(公告)日：1990-09-11

申请号：US418969

申请日：1989-10-10

申请人： Thorkild Christensen ,  Svend E. Thomsen ,  Siegfried Zenker

发明人： Thorkild Christensen ,  Svend E. Thomsen ,  Siegfried Zenker

IPC分类号： F15B11/00 ,  F15B11/05 ,  F15B21/04 ,  F16K31/00 ,  F16K31/64 ,  F16K31/70 ,  F16K47/00 ,  F16L55/027

CPC分类号： F15B11/003 ,  F15B21/045 ,  F16K31/002 ,  F16K47/00 ,  F16L55/027 ,  F15B2211/20553 ,  F15B2211/30535 ,  F15B2211/31576 ,  F15B2211/324 ,  F15B2211/40515 ,  F15B2211/413 ,  F15B2211/41581 ,  F15B2211/428 ,  F15B2211/46 ,  F15B2211/50545 ,  F15B2211/8613

摘要： A damping arrangement for damping the oscillations of valves which are controlled by pressure fluid and the control pressure conduits of which contain a throttle. A characteristic is that initial oscillations can be rapidly stabilized independently of the operating temperature of the pressure fluid. This is accomplished by the throttle having a throttle gap of which the height varies oppositely to the temperature of the pressure fluid so as to compensate fully or partially for changes in the hydraulic resistance that are occasioned by the temperature. The throttle gap is mostly traversed by laminar flow and consequently there is a high hydraulic throttling resistance even at low speeds of flow. The throttle is therefore also adapted effectively to damp small oscillations of the valve element so that the initial oscillations are rapidly stabilized.

摘要翻译： 一种阻尼装置，用于阻尼由压力流体控制的阀的振荡，并且其控制压力管道包含油门。 其特征是初始振荡可以独立于压力流体的操作温度而迅速稳定。 这是通过节气门实现的，其节气门间隙的高度与压力流体的温度相反地变化，以便完全或部分地补偿由温度引起的液压阻力的变化。 油门间隙主要是通过层流运动，因此即使在低流速下也存在高液压节流阻力。 因此，节气门也有效地适应于阻止阀元件的小振荡，使得初始振荡快速稳定。

公开(公告)号：US20230081243A1

公开(公告)日：2023-03-16

申请号：US17792166

申请日：2020-06-30

申请人： DANFOSS A/S

发明人： Tianlei LI ,  Delvis Anibal GONZALEZ

IPC分类号： H02K1/28 ,  F25B31/02

摘要： An electric machine according to an exemplary aspect of the present disclosure includes, among other things, an electric machine including a rotor having a sleeve radially outside a permanent magnet. Further, the sleeve includes at least one magnetic arc segment and at least one non-magnetic arc segment.

公开(公告)号：US20230034594A1

公开(公告)日：2023-02-02

申请号：US17389683

申请日：2021-07-30

申请人： Danfoss A/S

发明人： Jens Erik Rasmussen ,  Sigurd Larsen

IPC分类号： F25B41/335 ,  F25B41/325

摘要： The present invention is directed at a thermal expansion valve for a residential refrigeration application, including a valve body with a high pressure inlet, a low pressure outlet, a first suction gas port and a second suction gas port. The valve further includes a superheat defining mechanism with a diaphragm, a pushpin and a charge.

公开(公告)号：US20230011997A1

公开(公告)日：2023-01-12

申请号：US17785200

申请日：2020-12-15

申请人： Danfoss A/S

发明人： Hans Kurt PETERSEN ,  Leo Finn JENSEN ,  Anders PEDERSEN ,  Detlet MATZEN ,  Alexandra PAPADIMITRIOU

IPC分类号： F25B41/35

摘要： An expansion valve (1) is described to include a housing (2) having in inlet port (3) and an outlet port (4), a valve seat (5) arranged between the inlet port (3) and the outlet port (4), a valve element (6) movable over an operating stroke between a closed position at the valve seat (5) and an opened position away from the valve seat (5), and an actuator (7), wherein the actuator (7) has an electric rotary motor (8) acting on the valve element (5) by means of a threaded spindle (10) and a nut (9), wherein one of spindle (10) and nut (9) is rotatably driven by the motor (8) and the other one is rotatably fixed. Such an expansion valve should have the possibility for a simple assembly. To this end, in a disassembled condition of housing (2) and actuator (7), the actuator (7) has a mounting stroke which is at least two times the operating stroke, wherein the mounting stoke extends the operating stroke.

公开(公告)号：US20220397349A1

公开(公告)日：2022-12-15

申请号：US17831679

申请日：2022-06-03

申请人： Danfoss A/S

发明人： Helge Nielsen ,  Martin Debevc

IPC分类号： F28D9/00 ,  F28F3/08

摘要： A plate heat exchanger (1) includes a stack of plate elements (2), each plate element (2) being of a double wall construction having a first heat transfer plate (10) and a second heat transfer plate (20), each having a central heat exchanging portion (40) provided with surface patterns (45) adapted for a surface pattern (45) of first heat transfer plate (10) of one plate element (2) to contact a surface pattern (45) of a second heat transfer plate (20) of a neighbouring plate element (2) forming a first flow path (A) for a first fluid at the one side and second flow path for a second fluid (B) at the second side of a plate element (2), where the plate elements (2) are formed with openings (3a, 3b, 3c, 3d) in opening areas (30a, 30b, 30c, 30d), wherein a first heat transfer plate (10) in an opening area (30a, 30b, 30c, 30d) is formed with a closed projection (50) projecting in a first direction, and in the same opening area (30a, 30b, 30c, 30d) is formed with an open projection (65) formed on a second direction being opposite to the first direction, such that the closed (50) and open (65) projections together defines a first leak cavity (70).

公开(公告)号：US20220381350A1

公开(公告)日：2022-12-01

申请号：US17791575

申请日：2020-12-09

申请人： DANFOSS A/S

发明人： Mihai B. DOBRICA ,  Tianlei LI

IPC分类号： F16J15/44

摘要： A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a floating ring seal having a nose configured to contact a housing. Further, a low friction coating including carbon nanotubes (CNTs) is applied to one or both of the nose and the housing. In another aspect of this disclosure, the floating ring seal has first and second noses configured to contact the housing, and the first nose is radially spaced-apart from the second nose.

公开(公告)号：US11486618B2

公开(公告)日：2022-11-01

申请号：US16599982

申请日：2019-10-11

申请人： Danfoss A/S

发明人： Arnold Martin Schaefer ,  Jin Yan ,  Alonso Misael Perez

IPC分类号： F25B1/10 ,  F04D29/42 ,  F25B41/40 ,  F04D1/02 ,  F04D17/12 ,  F04D23/00 ,  F04D29/28

摘要： This disclosure relates to a compressor having at least two compression stages. In particular, an exemplary compressor includes a first radial compression stage arranged along an axis, a second radial compression stage arranged along the axis, and a connector fluidly connecting an outlet of the first radial compression stage to an inlet of the second radial compression stage. The connector has a plurality of sections arranged about the axis. The compressor may be a refrigerant compressor used in a heating, ventilation, and air conditioning (HVAC) chiller system.

公开(公告)号：US11466698B2

公开(公告)日：2022-10-11

申请号：US16524428

申请日：2019-07-29

申请人： Danfoss A/S

发明人： Delvis Anibal Gonzalez ,  Mogens Rasmussen

IPC分类号： F04D29/46 ,  H01F7/08 ,  F04D29/00 ,  F04D17/10 ,  F25B31/02

摘要： An actuator assembly includes a first actuator, a second actuator, and a moving piece that is disposed between the first actuator and the second actuator. The moving piece is positionable to close a gap in the compressor.

公开(公告)号：US20220275986A1

公开(公告)日：2022-09-01

申请号：US17635404

申请日：2020-08-19

申请人： Danfoss A/S

发明人： Thomas Lund

IPC分类号： F25B43/00 ,  F25B13/00 ,  F25B5/02

摘要： A refrigerant system (1) is described including a refrigerant circuit having a first heat exchanger (2), a compressor (3), a second heat exchanger (4) and a gas/fluid separator (5) including an inlet (12) connected to a refrigerant outlet of the first heat exchanger and an outlet (13) connected to the compressor (3). It should be possible to remove liquid from a refrigerant flow even with a limited size of the separator. To this end, the separator (5) comprises at least two flow paths arranged in parallel between the inlet (12) and the outlet (13) of the separator (5).

公开(公告)号：US20220274216A1

公开(公告)日：2022-09-01

申请号：US17632806

申请日：2020-07-30

申请人： Danfoss A/S

发明人： Pierre Olivier Pelletier ,  Leilei Wang

IPC分类号： B23P15/26 ,  F28F1/32 ,  F28F1/02

摘要： Disclosed is a method for producing a heat exchanger. The heat exchanger includes heat exchange tubes extending along a first direction and arranged along a second direction perpendicular to the first direction, and a fin. The fin is provided with fin grooves for mounting the heat exchange tubes, and each fin groove is provided with an opening on one side in a third direction perpendicular to the first direction and the second direction. The method includes: providing a heat exchange tube preform, the heat exchange tube preform having a maximum size in a second direction; providing a fin preform, a fin groove of the fin preform having a minimum size in the second direction, and the maximum size being greater than the minimum size; inserting the heat exchange tube preform into the fin groove of the fin preform, so as to generate a predetermined contact pressure between the heat exchange tube preform and the fin preform by means of the elastic deformation of at least one of the heat exchange tube preform and the fin preform; and welding the heat exchange tube preform and the fin preform together.