公开(公告)号：US20220026127A1

公开(公告)日：2022-01-27

申请号：US17297596

申请日：2019-11-25

Applicant: Danfoss A/S

Inventor： Niels P. Vestergaard ,  Johan Van Beek

IPC: F25B49/02 ,  F25B43/00

Abstract: The invention relates to a cooling system and operating method therefor with a direct expansion cooling circuit for an ammonia refrigerant. A compressor 12 is provided to compress ammonia vapor 11. A condenser is provided to condense the ammonia vapor to obtain liquid ammonia 20. An evaporator 32 is provided to evaporate the liquid ammonia. A superheat vapor quality sensor 40 is arranged at a conduit 34 between at least a portion of the evaporator 32 and the compressor 12. The superheat vapor quality sensor 40 comprises a heating element 48 and a temperature sensing element 52. The superheat vapor quality sensor 40 is disposed to deliver a sensor signal S indicative of a superheat vapor quality X of refrigerant flowing through the conduit 34 from an output of the temperature sensing element 52. The superheat vapor quality sensor 40 is arranged on a wall of a horizontally arranged portion of the conduit 34 in a position forming an angle of more than 120° to a vertical upward direction.

公开(公告)号：US20200030715A1

公开(公告)日：2020-01-30

申请号：US16491358

申请日：2018-03-13

Applicant: Danfoss A/S

Inventor： Shrikant Kulkarni ,  Rajendren Gurumoorthy ,  Giriraj Verma ,  Niels P. Vestergaard

IPC: B01D5/00 ,  B01D19/00

Abstract: A drain valve (10) is described comprising a housing (11), a fluid inlet (12), a gas outlet (13) and at least one liquid outlet orifice (19) arranged in a liquid outlet member (20) of the housing (11). The drain valve (10) furthermore comprises a float (16) connected to a lever (17) on a first end (18). The float (16) is arranged in a float chamber (15) of the housing (11). The float chamber (15) is connected to the fluid inlet (12), the gas outlet (13) and the at least one liquid outlet orifice (19). The liquid outlet orifice (19) may be opened or closed by a closing member (21) that is connected to a second end (22) of the lever (17) and is rotatably connected to the liquid outlet member (20). If a liquid is arranged in the float chamber (15) a rise in the liquid level will result in a lift of the float (16) whereby the closing member (21) is rotated to a more open position of the at least one liquid outlet orifice (19) and vice versa. Such a drain valve should be operated at higher fluid pressures without increasing the size of the valve. To this end the liquid outlet member (20) comprises a cylinder-like section and the closing member (21) is arranged concentrically around the cylinder-like section, wherein the closing member (21) comprises a closing element (24), wherein in the open valve position of the closing member (21) the closing element (24) converges towards the closest liquid outlet orifice (19) that the closing element (24) is matched to such that the surface of the closing element (24) perpendicular to the liquid flow direction through the liquid outlet orifice (19) is minimized, and the end of the liquid outlet orifice (19) that is first exposed when the liquid outlet orifice (19) is opened has the smallest width perpendicular to the opening direction of the closing element (24).

公开(公告)号：US20200063887A1

公开(公告)日：2020-02-27

申请号：US16345964

申请日：2017-10-27

Applicant: Danfoss A/S

Inventor： Niels P. Vestergaard ,  Detlef Matzen ,  Rajakumar Kanajam ,  Raghavendra Venkatesh ,  Torben Schack Fabricius

IPC: F16K31/122

Abstract: The present invention relates to a top cover (5) for soft throttling valve body (2), the top cover (5) comprising one or more fluid conduits for transferring a pilot fluid flow for setting a degree of opening of a main valve situated in a soft throttling valve body to the soft throttling valve body. Furthermore, the invention relates to a soft throttling valve (1) and a method for assembling the soft throttling valve (1). The object of the invention is to allow a good control of the pilot fluid flow while protecting the soft throttling valve body from damage due to valve failure. The object is solved by having a follower arrangement arranged to throttle the pilot fluid flow depending on the degree of opening of the main valve, further having a manual opening arrangement for manually opening the main valve and/or by further preventing a step-wise opening of the main valve in less than two opening steps. A method for assembling a soft throttling valve is also disclosed.

公开(公告)号：US20180266740A1

公开(公告)日：2018-09-20

申请号：US15669093

申请日：2017-08-04

Applicant: Danfoss A/S

Inventor： Giriraj Verma ,  Rajendren Gurumoorthy ,  Shrikant Chandrakant Kulkarni ,  Niels P. Vestergaard

IPC: F25B41/04 ,  F25D21/06 ,  F25B49/02 ,  F16T1/24

CPC classification number: F25B41/04 ,  B01D5/006 ,  B01D19/0063 ,  F16K5/0442 ,  F16K31/265 ,  F16K31/30 ,  F16T1/24 ,  F16T1/45 ,  F25B47/02 ,  F25B49/02 ,  F25B2400/23 ,  F25B2500/01 ,  F25D21/06

Abstract: A valve arrangement according to the present disclosure includes a valve module and a drain valve. The valve module includes first and second functional spaces, and an attachment interface defining a passage into one of the first or second functional spaces. The drain valve includes a fluid inlet and a fluid outlet formed through a common connector part that is connectable to the attachment interface to connect the fluid inlet of the drain valve to the second functional space and the at least one fluid outlet to the first functional space.

公开(公告)号：US20220018793A1

公开(公告)日：2022-01-20

申请号：US17297640

申请日：2019-11-25

Applicant: Danfoss A/S

Inventor： Niels P. Vestergaard ,  Johan Van Beek

IPC: G01N25/08 ,  F25B49/02

Abstract: The invention relates to a sensor arrangement for providing a sensor signal S indicative of a vapor quality X of a medium flowing within a conduit 38a. A sensor includes a heating element and a temperature sensing element is arranged in thermal contact with a wall of a horizontally arranged portion 38a of the conduit 34. Processing means are disposed to deliver a sensor signal S based on an output of the temperature sensing element 52. The sensor 40 includes a sensor body 46 made of a metal material. The heating element 48 and the temperature sensing element 52 are arranged in thermal contact with the sensor body 46. The invention further relates to a cooling system 10 including at least one evaporator 32 for evaporating an ammonia refrigerant, at least one compressor 12 arranged to compress the evaporated refrigerant, and at least one condenser 18 for condensing the compressed refrigerant, and at least one evaporator pump 30 for pumping the condensed refrigerant to the evaporator 32. A sensor arrangement 50 is arranged at a conduit 34 conducting the refrigerant from at least a portion of the evaporator 32.

公开(公告)号：US11067191B2

公开(公告)日：2021-07-20

申请号：US16345964

申请日：2017-10-27

Applicant: Danfoss A/S

Inventor： Niels P. Vestergaard ,  Detlef Matzen ,  Rajakumar Kanajam ,  Raghavendra Venkatesh ,  Torben Schack Fabricius

IPC: F16K31/122 ,  F16K31/124 ,  F25B47/02 ,  F25B41/20

Abstract: The present invention relates to a top cover (5) for soft throttling valve body (2), the top cover (5) comprising one or more fluid conduits for transferring a pilot fluid flow for setting a degree of opening of a main valve situated in a soft throttling valve body to the soft throttling valve body. Furthermore, the invention relates to a soft throttling valve (1) and a method for assembling the soft throttling valve (1). The object of the invention is to allow a good control of the pilot fluid flow while protecting the soft throttling valve body from damage due to valve failure. The object is solved by having a follower arrangement arranged to throttle the pilot fluid flow depending on the degree of opening of the main valve, further having a manual opening arrangement for manually opening the main valve and/or by further preventing a step-wise opening of the main valve in less than two opening steps. A method for assembling a soft throttling valve is also disclosed.

公开(公告)号：US11806643B2

公开(公告)日：2023-11-07

申请号：US16491358

申请日：2018-03-13

Applicant: Danfoss A/S

Inventor： Shrikant Kulkarni ,  Rajendren Gurumoorthy ,  Giriraj Verma ,  Niels P. Vestergaard

IPC: B01D19/00 ,  F16K31/26 ,  F16T1/24 ,  F25B47/02 ,  F16T1/45 ,  B01D5/00 ,  F16K31/30 ,  F16K5/04 ,  F25B41/20 ,  F25B49/02 ,  F25D21/06

CPC classification number: B01D19/0063 ,  B01D5/006 ,  F16K5/0442 ,  F16K31/265 ,  F16K31/30 ,  F16T1/24 ,  F16T1/45 ,  F25B41/20 ,  F25B47/02 ,  F25B49/02 ,  F25D21/06 ,  F25B2400/23 ,  F25B2500/01

Abstract: A drain valve (10) includes a housing (11), a fluid inlet (12), a gas outlet (13) and at least one liquid outlet orifice (19) arranged in a liquid outlet member (20) of the housing (11). The drain valve (10) furthermore includes a float (16) connected to a lever (17) on a first end (18). The float (16) is arranged in a float chamber (15) of the housing (11). The float chamber (15) is connected to the fluid inlet (12), the gas outlet (13) and the at least one liquid outlet orifice (19). The liquid outlet orifice (19) may be opened or closed by a closing member (21) that is connected to a second end (22) of the lever (17) and is rotatably connected to the liquid outlet member (20).

公开(公告)号：US11365919B2

公开(公告)日：2022-06-21

申请号：US17044395

申请日：2019-07-02

Applicant: Danfoss A/S

Inventor： Thomas Lund ,  Johan Van Beek ,  Niels P. Vestergaard

IPC: F25B43/04

Abstract: An apparatus (1) for removing non-condensable gases from a refrigerant is described, said apparatus (1) comprising a pipe arrangement (2) having a pipe (3), cooling means (4) for the pipe (3), and venting means, wherein the pipe (3) comprises a connection geometry (5) for a connection to a refrigerant system. Such an apparatus should be operated with good efficiency. To this end the pipe comprises at least a first section (6) and a second section (7) which are directed in different directions.

公开(公告)号：US20210102737A1

公开(公告)日：2021-04-08

申请号：US17044395

申请日：2019-07-02

Applicant: Danfoss A/S

Inventor： Thomas Lund ,  Johan Van Beek ,  Niels P. Vestergaard

IPC: F25B43/04

Abstract: An apparatus (1) for removing non-condensable gases from a refrigerant is described, said apparatus (1) comprising a pipe arrangement (2) having a pipe (3), cooling means (4) for the pipe (3), and venting means, wherein the pipe (3) comprises a connection geometry (5) for a connection to a refrigerant system. Such an apparatus should be operated with good efficiency. To this end the pipe comprises at least a first section (6) and a second section (7) which are directed in different directions.