公开(公告)号：WO2020109214A1

公开(公告)日：2020-06-04

申请号：PCT/EP2019/082381

申请日：2019-11-25

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 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) comprises 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：WO2020064351A1

公开(公告)日：2020-04-02

申请号：PCT/EP2019/074352

申请日：2019-09-12

Applicant: DANFOSS A/S

Inventor： PRINS, Jans ,  LARSEN, Lars Finn Sloth

IPC: F25B49/02

Abstract: A method for controlling a vapour compression system (1) comprising a compressor unit (2) comprising one or more compressors (3, 12), a heat rejecting heat exchanger (4), a receiver (6), an expansion device (7) and an evaporator (8) arranged in a refrigerant path. A pressure value indicating a pressure prevailing inside the receiver (6) is obtained, and the obtained pressure value is compared to a first threshold pressure value. In the case that the obtained pressure value is below the first threshold pressure value, the compressor(s) (3, 12) of the compressor unit (2) are controlled in order to reduce a suction pressure of the vapour compression system (1).

公开(公告)号：WO2019243561A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/066443

申请日：2019-06-21

Applicant: DANFOSS A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  THOMSEN, Carsten Mølhede

IPC: F25B47/02

Abstract: A method for terminating defrosting of an evaporator (104) is disclosed. The evaporator (104) is part of a vapour compression system (100). The vapour compression system (100) further comprises a compressor unit (101), a heat rejecting heat exchanger (102), and an expansion device (103). The compressor unit (101), the heat rejecting heat exchanger (102), the expansion device (103) and the evaporator (104) are arranged in a refrigerant path, and an air flow is flowing across the evaporator (104). When ice is accumulated on the evaporator (104), the vapour compression system (100) operates in a defrosting mode. At least one temperature sensor (305) monitors a temperature T air , of air leaving the evaporator (104). A rate of change of T air is monitored and defrosting is terminated when the rate of change of the temperature, T air , approaches zero.

公开(公告)号：WO2019115555A1

公开(公告)日：2019-06-20

申请号：PCT/EP2018/084415

申请日：2018-12-11

Applicant: DANFOSS A/S

Inventor： VAN BEEK, Johan ,  PETERSEN, Hans Kurt ,  JENSEN, Leo Finn ,  BIRKELUND, Michael

IPC: F16K27/00 ,  F16K31/40 ,  F25B13/00 ,  F16K11/24 ,  F24F1/32

CPC classification number: F16K27/003 ,  F16K11/24 ,  F16K31/408 ,  F24F1/32

Abstract: A valve arrangement (1) for an operation mode selector is described, the valve arrangement comprising at least two valve modules (2), each of the valve modules comprising a housing section (3), a first mode selector valve (9) connecting a discharge conduit (7) and an evaporator conduit (19) and a second mode selector valve (10) connecting a suction conduit (8) and the evaporator conduit, the first mode selector valve and the second mode selector valve being connected by the housing section, and the valve modules being arranged side by side in a direction parallel to the discharge conduit and/or the suction conduit, wherein the evaporator conduit extends from the housing section in an area which is limited by a first plane (34) through the discharge conduit and a second plane (35) through the suction conduit and parallel to the first plane, and wherein the discharge conduit and the suction conduit are common for all of the valve modules. Such a valve arrangement should be made compact. To this end, for each valve module, the housing section is part of a housing, the housing comprising a discharge port (4), a suction port (5), and an evaporator port (6), wherein the discharge port is connected to the discharge conduit, and wherein the suction port is connected to the suction conduit.

公开(公告)号：WO2018192827A1

公开(公告)日：2018-10-25

申请号：PCT/EP2018/059330

申请日：2018-04-11

Applicant: DANFOSS A/S

Inventor： LUCKMANN, Ejnar ,  JENSEN, Lars

IPC: H04L12/28 ,  H04L29/08 ,  G05B19/418

Abstract: A control system (1) for controlling a cooling system comprising two or more cooling entities (2) is disclosed. The control system comprises a central control unit (3), two or more entity controllers (4), each entity controller (4) being associated with one of the cooling entities (2), and each entity controller (4) being provided with a nearfield communication interface (6) allowing communication between the entity controller (4) and a portable device (7), via a nearfield communication channel, and a secured communication network (5) connecting the central control unit (3) with each of the entity controllers (4). The central control unit (3) is configured to generate blocking signals and/or unblocking signals and communicate the blocking signals and/or unblocking signals to each of the entity controllers (4), via the secured communication network (5). Each of the entity controllers (4) is configured to block and/or unblock the nearfield communication interface (6), in accordance with received blocking signals and/or unblocking signals.

公开(公告)号：WO2018095787A1

公开(公告)日：2018-05-31

申请号：PCT/EP2017/079360

申请日：2017-11-15

Applicant: DANFOSS A/S

Inventor： FREDSLUND, Kristian ,  MADSEN, Kenneth Bank ,  PRINS, Jan ,  SCHMIDT, Frede

IPC: F25B49/02

Abstract: A method for controlling a vapour compression system (1) is disclosed, the vapour compression system (1) comprising at least one compressor (2, 16), a heat rejecting heat exchanger (3), a high pressure expansion device (4, 15, 17), a receiver (5), an evaporator expansion device (6), an evaporator (7) and a gas bypass valve (8), arranged in a refrigerant path. It is registered that the gas bypass valve (8) is malfunctioning or saturated, and a pressure value for a pressure prevailing inside the receiver (5) is obtained. Finally, the vapour compression system (1) is controlled in order to control a gaseous refrigerant supply to the receiver (5) to adjust the pressure prevailing inside the receiver (5) to reach a target pressure level.

公开(公告)号：WO2018095785A1

公开(公告)日：2018-05-31

申请号：PCT/EP2017/079358

申请日：2017-11-15

Applicant: DANFOSS A/S

Inventor： SCHMIDT, Frede ,  PRINS, Jan ,  FREDSLUND, Kristian ,  MADSEN, Kenneth Bank

IPC: F25B41/06 ,  F25B49/02

Abstract: A method for controlling a vapour compression system (1) is disclosed. A mass flow of refrigerant along a part of the refrigerant path is estimated, based on measurements performed by one or more pressure sensors (10, 12, 13) for measuring a refrigerant pressure at selected positions along the refrigerant path and one or more temperature sensors (11, 4) for measuring a refrigerant temperature at selected positions along the refrigerant path. A refrigerant pressure or a refrigerant temperature at a selected position a pressure sensor (10, 12, 13) or temperature sensor (11, 14) along the refrigerant path is derived, based on the estimated mass flow. The vapour compression system (1) is allowed to continue operating, even if a sensor (10, 11, 12, 13, 14) is malfunctioning or unreliable.

公开(公告)号：WO2017220702A1

公开(公告)日：2017-12-28

申请号：PCT/EP2017/065325

申请日：2017-06-21

Applicant: DANFOSS A/S

Inventor： SCHMIDT, Flemming Morten ,  PRINS, Jan ,  SCHMIDT, Frede ,  FREDSLUND, Kristian

IPC: F25B31/00

Abstract: A method for controlling a valve arrangement (10) interconnecting at least one oil separator (8) and an oil receiver (9) in a vapour compression system (1) is disclosed. A pressure difference between a pressure prevailing inside the oil separator(s) (8) and a pressure prevailing inside the oil receiver (9) is obtained. Then a duration for an open time of an open/close sequence of the valve arrangement (10) is derived, based on the obtained pressure difference, and the valve arrangement (10) is controlled in accordance with the derived duration of an open time. The supply of oil to the oil receiver (9) can be accurately controlled, regardless of the operating conditions.

Abstract translation: 公开了一种用于控制互连蒸气压缩系统（1）中的至少一个油分离器（8）和油接收器（9）的阀装置（10）的方法。 获得油分离器（8）内主要的压力与油接收器（9）内的压力之间的压力差。 然后基于所获得的压力差导出阀装置（10）的打开/关闭序列的打开时间的持续时间，并且根据导出的打开时间的持续时间来控制阀装置（10）。 无论操作条件如何，均可精确控制机油供应（9）的供油量。

公开(公告)号：WO2017137395A1

公开(公告)日：2017-08-17

申请号：PCT/EP2017/052641

申请日：2017-02-07

Applicant: DANFOSS A/S

Inventor： HANSEN, Jesper Schmidt ,  JENSEN, Leo Finn ,  PEDERSEN, Anders

IPC: F16K31/40

CPC classification number: F16K31/404

Abstract: The present invention relates to a valve arrangement (1) comprising a valve housing (2), a valve inlet (3), a valve outlet (4) and a diaphragm assembly for controlling a fluid flow through the valve housing (2) from the valve inlet (3) to the valve outlet (4), the diaphragm assembly comprising a diaphragm (5) and a diaphragm plate (6) at least partially covering the diaphragm (5), the diaphragm (5) comprising one or more equalization holes (13) passing through the diaphragm (5) and the diaphragm plate (6) comprising one or more equalization openings (12) passing through the diaphragm plate (6), the equalization holes (13) being aligned with the equalization openings (12). According to the invention, the diaphragm assembly comprises an engagement zone engaging the diaphragm (5) in order to rotationally fix the diaphragm (5) and the diaphragm plate (6) with respect to each other. This has the effect that the equalization holes (13) will keep aligned with the equalization openings (12). Thus, proper function of the valve arrangement (1) is ensured at all times. Furthermore, the invention relates to a diaphragm assembly for a valve arrangement (1) as described above.

Abstract translation: 本发明涉及一种包括阀壳体（2），阀入口（3），阀出口（4）和隔膜组件的阀装置（1），所述隔膜组件用于控制流体流过 从所述阀入口（3）到所述阀出口（4）的所述阀壳体（2），所述隔膜组件包括隔膜（5）和至少部分地覆盖所述隔膜（5）的隔膜板（6），所述隔膜 5）包括穿过所述隔膜（5）和所述隔膜板（6）的一个或多个均衡孔（13），所述均衡孔包括穿过所述隔膜板（6）的一个或多个均衡开口（12），所述均衡孔 与均衡开口（12）对齐。 根据本发明，隔膜组件包括与隔膜（5）接合的接合区域，以便将隔膜（5）和隔膜板（6）相对于彼此旋转地固定。 这具有均衡孔（13）将与均衡开口（12）保持对齐的效果。 因此，始终确保阀装置（1）的适当功能。 此外，本发明涉及如上所述的用于阀装置（1）的隔膜组件。

公开(公告)号：WO2017118637A1

公开(公告)日：2017-07-13

申请号：PCT/EP2017/050093

申请日：2017-01-03

Applicant: DANFOSS A/S

Inventor： LASSEN, Simon Ahrens ,  HALLDORSSON, Klaus ,  RASMUSSEN, Jens Erik ,  LAGONI, Bjarne Hechmann

IPC: F16K27/02 ,  F16K17/08 ,  G05D16/06

CPC classification number: F16K27/0236 ,  F16K17/085

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).

Abstract translation: 本发明涉及一种用于阀的胶囊以及包括这种胶囊的阀。 本发明的任务是提供一种阀，其中可以实现用于构造的紧公差，并且阀的组装被简化。 根据本发明，上述任务通过用于包括至少一个隔膜（2），阀座（3），胶囊入口（5）和胶囊出口（6）的阀的胶囊（1）来解决。 阀座（3）可打开和关闭以允许或阻止从胶囊入口（5）到胶囊出口（6）的流体流动。 上述任务还通过用于包括至少一个隔膜（2），阀座（3），胶囊入口（5）和胶囊出口（6）的阀的胶囊（1）来解决，其中胶囊 1）被构造和布置成控制胶囊（1）外部的导向阀元件的位置。 上述任务也通过包括阀壳体（15）的阀（10）来解决，其中上述类型的容器（1）布置在阀壳体（15）中。