公开(公告)号：WO2020127062A1

公开(公告)日：2020-06-25

申请号：PCT/EP2019/085364

申请日：2019-12-16

Applicant: DANFOSS A/S

Inventor： LARSEN, Sigurd ,  HARCK, Kurt ,  KRISTENSEN, Søren Sottrup ,  REESE, Birthe Nissen ,  VAGNSHOLDT, Charlotte Vibeke Pingel

IPC: F25B41/06 ,  F16K31/04

Abstract: Electric expansion valve (1) comprising a valve housing (12), a valve seat (2), a valve element (3) cooperating with the valve seat (2), a drive driving the valve element (3) and comprising a rotary motor (4) having an axis (17) of rotation. The valve element (3) is connected to the motor (4) and has a possibility of radial displacement between the rotor (6) and the valve element (3) with respect to the axis (17) of rotation. Such an expansion valve should ensure a long lifetime with low production costs. To this end the valve element (3) is connected to the motor (4) by means of a fixing element (16) which guarantees a defined position of the valve element (3) in axial direction while allowing the radial displacement between the axis (17) of rotation and the valve element (3).

公开(公告)号：WO2020126201A1

公开(公告)日：2020-06-25

申请号：PCT/EP2019/080497

申请日：2019-11-07

Applicant: DANFOSS A/S

Inventor： LARSEN, Sigurd

IPC: F25B41/06

Abstract: A valve(1), in particular expansion valve, is described comprising a valve element (6) driven by a rotary motor(7), wherein the motor (7) comprises a rotor (9) arranged inside a motor section (19) of a tube (14) and a stator (8)arranged outside the motor section (19) of the tube (14) and the rotor (9) is supported by a bearing(15), which bearing(15)is mounted with press fit in a bearing section (16) of the tube(14). Such a valve should have a small motor and a tube which can be produced with low costs. To this end the motor section (19) and the bearing section(17) comprise different diameters.

公开(公告)号：WO2020007866A1

公开(公告)日：2020-01-09

申请号：PCT/EP2019/067750

申请日：2019-07-02

Applicant: DANFOSS A/S

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

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：WO2019243591A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/066502

申请日：2019-06-21

Applicant: DANFOSS A/S

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

IPC: F25B49/02 ,  F25B47/00 ,  F25B47/02

Abstract: A method for detecting ice accumulation on an evaporator (104) of a vapour compression system (100) 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). At least one temperature of air leaving the evaporator (104) is measured and a control value based on the measured temperature is derived. Determining whether ice has accumulated on the evaporator (104) by comparing the derived control value and a setpoint value.

公开(公告)号：WO2019243106A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/065120

申请日：2019-06-11

Applicant: DANFOSS A/S

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

IPC: F25B49/02 ,  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 two temperature sensors (306, 307) monitor an evaporator inlet temperature, T e,in, at a hot gas inlet (304) of the evaporator (104) and an evaporator outlet temperature, T e,out, at a hot gas outlet (305) of the evaporator (104). A difference between T e,in and T e,ou ,is monitored and defrosting is terminated when the rate of change of the difference between T e,in and T e,out approaches zero.

公开(公告)号：WO2019238627A1

公开(公告)日：2019-12-19

申请号：PCT/EP2019/065117

申请日：2019-06-11

Applicant: DANFOSS A/S

Inventor： BENSLIMANE, Mohamed

IPC: G01L19/06

Abstract: A pressure sensor arrangement (1) for measuring a pressure of a fluid is described, the sensor arrangement (1) comprising a connector housing (2) having a fluid opening (3) and a fluid chamber (4) in connection with the fluid opening (3), at least one pressure sensitive element (5), a membrane (9) arranged between the pressure sensitive element (5) and the fluid chamber (4), and pressure attenuation means (10). Such a pressure sensor arrangement should be able to protect the measuring membrane from high frequency pressure pulsations with low costs. To this end the pressure attenuation means (10) are arranged in the fluid chamber (4) in direct contact with the membrane (9) separating the membrane (9) from the fluid in the fluid chamber and comprise a homogenous incompressible material having a mechanical loss factor of 0.1 or higher at frequencies of 200 Hz or higher.

公开(公告)号：WO2018202496A1

公开(公告)日：2018-11-08

申请号：PCT/EP2018/060572

申请日：2018-04-25

Applicant: DANFOSS A/S

Inventor： LARSEN, Lars Finn Sloth ,  PRINS, Jan ,  GREEN, Torben

IPC: F25B5/02 ,  F25B49/02

Abstract: A method for controlling suction pressure in a vapour compression system (1) comprising one or more cooling entities (5) is disclosed. For each cooling entity (5), a maximum required suction pressure and/or a required change in suction pressure for maintaining a target temperature in the refrigerated volume is obtained. A most loaded cooling entity (5) among the one or more cooling entities (5) is identified, based on the maximum required suction pressures and/or the required changes in suction pressure. The suction pressure of the vapour compression system (1) is controlled in accordance with the maximum required suction pressure and/or required change in suction pressure for the identified most loaded cooling entity (5).

公开(公告)号：WO2018167028A1

公开(公告)日：2018-09-20

申请号：PCT/EP2018/056183

申请日：2018-03-13

Applicant: DANFOSS A/S

Inventor： VERMA, Giriraj ,  GURUMOORTHY, Rajendren ,  KULKARNI, Shrikant ,  VESTERGAARD, Niels P.

IPC: B01D19/00 ,  F16K24/04 ,  F25B47/02 ,  F25B41/04 ,  F16K27/00

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：WO2018095786A1

公开(公告)日：2018-05-31

申请号：PCT/EP2017/079359

申请日：2017-11-15

Applicant: DANFOSS A/S

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

IPC: F25B49/02 ,  F25B41/00

Abstract: A method for controlling a vapour compression system (1) is disclosed. Malfunctioning of a gas bypass valve (8) is registered. An actual opening degree of the gas bypass valve (8) is derived, and a target opening degree of the gas bypass valve (8) is derived, based on one or more control parameters of the vapour compression system (1). The actual opening degree is compared to the target opening degree, and the vapour compression system (1) is controlled based on the comparison, and in order to match a mass flow of gaseous refrigerant through the gas bypass valve (8) to the actual opening degree of the gas bypass valve (8).

公开(公告)号：WO2017167367A1

公开(公告)日：2017-10-05

申请号：PCT/EP2016/057017

申请日：2016-03-31

Applicant: DANFOSS A/S

Inventor： JESPERSEN, Lars ,  CARSTENSEN, Morten

IPC: G01D4/00 ,  H04L25/02

Abstract: A utility meter (1) is described comprising a metering section (2), a communication interface (3), and a communication path (4) providing a galvanic isolation between said metering section (2) and said communication interface (3). Such a utility meter should be operated with low power consumption. To this end said communication path (4) comprises a transformer (5) having a primary side with a first primary terminal and a second primary terminal connected to said metering section (2) and a secondary side (S) connected to said communication interface.

Abstract translation: （2），通信接口（3）以及提供所述计量部分（2）与所述计量部分（2）之间的电流隔离的通信路径（4）的公用仪表（1） 所述通信接口（3）。 这种公用电表应该以低功耗运行。 为此，所述通信路径（4）包括变压器（5），该变压器具有连接到所述计量部分（2）的具有第一主要端子和第二主要端子的主侧以及连接到所述通信接口的次级侧（S）。