公开(公告)号：EP3660419A1

公开(公告)日：2020-06-03

申请号：EP18209030.8

申请日：2018-11-29

Applicant: Danfoss A/S

Inventor： VESTERGAARD, Niels P. ,  VAN BEEK, Johan

IPC: F25B49/00 ,  G01K13/02

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.

公开(公告)号：EP3660418A1

公开(公告)日：2020-06-03

申请号：EP18209032.4

申请日：2018-11-29

Applicant: Danfoss A/S

Inventor： VESTERGAARD, Niels P. ,  VAN BEEK, Johan

IPC: F25B41/06

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 comprising a heating element and a temperature sensing element is arranged in thermal contact with a wall 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 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：EP3315838A1

公开(公告)日：2018-05-02

申请号：EP17165521.0

申请日：2017-04-07

Applicant: Danfoss A/S

Inventor： FABRICIUS, Torben Schack ,  VENKATESH, Raghavendra ,  KANAJAM, Rajkumar ,  MATZEN, Detlef ,  VESTERGAARD, Niels P.

IPC: F16K31/122 ,  F25B41/04 ,  F25B47/02

CPC classification number: F16K31/1221 ,  F25B41/04 ,  F25B47/022

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.

Abstract translation: 本发明涉及一种用于软节流阀体（2）的顶盖（5），顶盖（5）包括一个或多个流体导管，用于传递先导流体流动以设定位于其中的主阀的打开程度 软节流阀体与软节流阀体连接。 此外，本发明涉及软节流阀（1）和用于组装软节流阀（1）的方法。 本发明的目的是允许很好地控制先导流体流动，同时保护软节流阀体免于由于阀故障而损坏。 该目的通过具有从动装置来解决，该从动装置布置成根据主阀的打开程度来节流先导流体流动，还具有用于手动打开主阀的手动打开装置和/或通过进一步防止阶梯式开口 主阀门在两个以内的开启阶段。 还公开了一种用于组装软节流阀的方法。