公开(公告)号：US20160201957A1

公开(公告)日：2016-07-14

申请号：US14902094

申请日：2014-06-30

Applicant: DANFOSS A/S

Inventor： Bjarke Skovgard DAM ,  Georg FOSEL ,  Carsten Molhede THOMSEN ,  Louis SULLIVAN

IPC: F25B41/06 ,  G05D16/10 ,  G05D7/01

CPC classification number: F25B41/062 ,  F25B2341/061 ,  F25B2500/01 ,  F25B2500/26 ,  G05D7/0146 ,  G05D16/106

Abstract: An expansion valve (1) for a vapour compression system, the valve (1) comprising a first valve part (5) having an outlet orifice (7) and a piston (8) movable inside the outlet orifice (7) in response to a differential pressure across the expansion valve (1), controlling a fluid flow through the first valve part (5). A cross-sectional flow area of the outlet orifice (7) between a circumference at an inner surface of the outlet orifice (7) and a circumference at an outer surface of the piston (8) varies as a function of the position of the piston (8) relative to the outlet orifice (7). A first cross-sectional flow area is defined at a first differential pressure, and a second cross-sectional flow area is defined at a second differential pressure, where the first cross-sectional flow area is smaller than the second cross-sectional flow area, and the first differential pressure is lower than the second differential pressure.

Abstract translation: 一种用于蒸气压缩系统的膨胀阀（1），所述阀（1）包括具有出口孔（7）的第一阀部分（5）和可在所述出口孔（7）内移动的活塞（8） 通过膨胀阀（1）两端的差压，控制通过第一阀部（5）的流体流。 出口孔（7）在出口孔（7）的内表面周围与活塞（8）外表面周长之间的横截面流动面积作为活塞位置的函数而变化 （8）相对于出口孔（7）。 在第一差压下限定第一横截面流动面积，并且第二横截面流动区域被限定在第二截面流动面积小于第二横截面流动面积的第二压差下， 并且第一压差低于第二压差。

公开(公告)号：US20160123828A1

公开(公告)日：2016-05-05

申请号：US14895228

申请日：2014-05-08

Applicant: DANFOSS A/S

Inventor： Steen Moellebjerg Matzen

IPC: G01L9/00

CPC classification number: G01L9/0055 ,  G01L9/04

Abstract: A sensor (1) comprising a membrane, an isolation layer (3) arranged on the membrane, measuring electronics comprising a thin film circuit (4), e.g. in the form of a Wheatstone bridge, deposited on the isolation layer (3), and a power supply (14) arranged to supply a quasi-DC voltage to the thin film circuit (4) is disclosed. The sensor (1) is cost effective to manufacture, due to the thin film circuit (4), and corrosion effects are avoided, without having to apply a coating or passivation layer onto the thin film circuit (4), due to the quasi-DC voltage being supplied to the thin film circuit (4).

Abstract translation: 包括膜的传感器（1），布置在膜上的隔离层（3），测量电子器件包括薄膜电路（4），例如薄膜电路。 公开了以薄片电路（4）提供准直流电压的电源（14），其形式为沉积在隔离层（3）上的惠斯登电桥形式。 由于薄膜电路（4），传感器（1）由于薄膜电路（4）的制造而具有成本效益，并且避免了腐蚀效应，而不必在薄膜电路（4）上施加涂层或钝化层， DC电压被提供给薄膜电路（4）。

公开(公告)号：US20160018142A1

公开(公告)日：2016-01-21

申请号：US14870338

申请日：2015-09-30

Applicant: Danfoss A/S

Inventor： Claus Thybo ,  Jurgen Suss

IPC: F25B41/06 ,  F16K31/12 ,  F16K17/02

CPC classification number: F25B41/062 ,  F16K17/02 ,  F16K17/30 ,  F16K31/12 ,  F25B1/10 ,  Y10T137/7787

Abstract: An expansion valve (4) for a vapour compression system (1), and a vapour compression system comprising such an expansion valve (4) are disclosed. The expansion valve (4) comprises a first valve member (7) and a second valve member (8). The first valve member (7) and the second valve member (8) are arranged movably relative to each other, and the relative position of the first valve member (7) and the second valve member (8) determines an opening degree of the expansion valve (4). The first valve member (7) and/or the second valve member (8) is/are automatically movable in response to changes in a differential pressure across the expansion valve (4), the opening degree of the expansion valve (4) thereby being automatically altered in response to changes in the differential pressure across the expansion valve (4). It is ensured that the opening degree of the expansion valve is automatically adjusted to the actual operating conditions, thereby optimising the efficiency of the vapour compression system. Furthermore, this is obtained in a simple manner, without requiring complicated control of the valve.

公开(公告)号：USD742265S1

公开(公告)日：2015-11-03

申请号：US29486067

申请日：2014-03-26

Applicant: Danfoss A/S

Designer： Kurt Harck ,  Sigurd Larsen

公开(公告)号：US20150300712A1

公开(公告)日：2015-10-22

申请号：US14379966

申请日：2013-02-16

Applicant: Danfoss A/S

Inventor： Kenneth Bank Madsen ,  Leif Skovvang Nielsen ,  Flemming Morten Schmidt ,  Frede Schmidt

IPC: F25B49/02 ,  G05B15/02

CPC classification number: F25B49/02 ,  G05B15/02 ,  G05B19/056

Abstract: The invention relates to a method for configuring, on a control unit, operating parameters of a plurality of devices of a refrigeration system. A user selects on the control unit, among the plurality of devices of the refrigeration system, a first device to configure. Information of valid configurable operating parameters of the first device is provided on the control unit. The user selects at least one of the valid configurable operating parameters of the first device, thereby configuring the first device. Information stored about operating parameters of other devices of the refrigeration system, based on the configuration of the first device, is then provided on the control unit. Finally, the user confirms, on the control unit, one or more operating parameters of one or more of the other devices, thereby configuring the one or more other devices. The invention also relates to a control unit and a refrigeration system.

Abstract translation: 本发明涉及一种用于在控制单元上配置制冷系统的多个装置的操作参数的方法。 用户在制冷系统的多个设备中的控制单元上选择要配置的第一设备。 在控制单元上提供有关第一设备的有效可配置操作参数的信息。 用户选择第一设备的有效可配置操作参数中的至少一个，从而配置第一设备。 然后在控制单元上提供存储关于制冷系统的其他设备的操作参数的信息，基于第一设备的配置。 最后，用户在控制单元上确认一个或多个其他设备的一个或多个操作参数，从而配置一个或多个其他设备。 本发明还涉及控制单元和制冷系统。

公开(公告)号：US20150059369A1

公开(公告)日：2015-03-05

申请号：US14390865

申请日：2013-04-19

Applicant: Danfoss A/S

Inventor： Jan Prins ,  Frede Schmidt

IPC: F25B49/02 ,  F25D17/06

CPC classification number: F25B49/02 ,  F25B49/027 ,  F25B2313/0294 ,  F25B2600/11 ,  F25B2600/111 ,  F25B2700/172 ,  F25B2700/2103 ,  F25B2700/2106 ,  F25B2700/21163 ,  F25D17/06 ,  Y02B30/743

Abstract: A method of controlling a fan of a vapour compression system is disclosed. The vapour compression system comprises a compressor, a heat rejecting heat exchanger, e.g. in the form of a gas cooler or a condenser, an expansion device and an evaporator arranged in a refrigerant circuit. The fan is arranged to provide a secondary fluid flow across the heat rejecting heat exchanger, e.g. in the form of an air flow. The method comprises the steps of establishing a temperature, T1, of refrigerant leaving the heat rejecting heat exchanger, establishing a temperature, T2, of ambient air of the heat rejecting heat exchanger, and deriving a temperature difference, ΔT=T1-T2, between the temperature (T1) of refrigerant leaving the heat rejecting heat exchanger and the temperature (T2) of ambient air of the heat rejecting heat exchanger. The temperature difference, ΔT, is compared to a first threshold value and to a second threshold value, the second threshold value being smaller than or equal to the first threshold value, and the rotational speed of the fan is controlled on the basis of the comparing step. The method allows the electrical energy consumption of the fan to be reduced without risking instability of the vapour compression system.

Abstract translation: 公开了一种控制蒸气压缩系统的风扇的方法。 蒸气压缩系统包括压缩机，排热热交换器，例如， 以气体冷却器或冷凝器的形式，布置在制冷剂回路中的膨胀装置和蒸发器。 风扇被布置成提供穿过排热热交换器的次级流体流，例如， 以空气流的形式。 该方法包括建立离开热排热热交换器的制冷剂的温度T1，建立排热热交换器的环境空气的温度T2，并导出温差，D = T = T1-T2 在离开排热热交换器的制冷剂的温度（T1）和排热热交换器的周围空气的温度（T2）之间。 将温差＆Dgr; T与第一阈值和第二阈值进行比较，第二阈值小于或等于第一阈值，并且风扇的转速基于 比较步骤。 该方法允许降低风扇的电能消耗，而不会造成蒸气压缩系统的不稳定性。

公开(公告)号：US20140331700A1

公开(公告)日：2014-11-13

申请号：US14349749

申请日：2012-10-05

Applicant: Danfoss A/S

Inventor： Kenneth Bank Madsen ,  Frede Schmidt

IPC: F25B49/02 ,  F25B39/04

CPC classification number: F25B49/027 ,  F25B39/04 ,  F25B49/005 ,  F25B2309/061 ,  F25B2313/0313 ,  F25B2600/17 ,  F25B2700/195 ,  F25B2700/2102

Abstract: A method for monitoring gas pressure in a heat rejecting heat exchanger in a cooling circuit is disclosed. In the heat rejecting heat exchanger, pressure is controlled by means of a control unit, said control unit controlling at least one valve. The present capacity of one or more compressors in the cooling circuit compared to a maximum capacity of the one or more compressors is established. The maximum capacity may be the rated capacity of the compressors, or it may be a maximum capacity under the given circumstances and/or the given operating conditions. If the present capacity of the one or more compressors is at least at a level corresponding to a pre-set percentage of the maximum capacity, a period of time elapsed from a point in time where the compressor capacity reached said level is established. If the established period of time has a duration which is longer than a pre-set period of time, then it is concluding that the cooling medium is in a gas loop operational mode. Detecting a gas loop operational mode in an easy manner allows an operator or a controller to adjust operation of the cooling plant in such a manner that the cooling medium is brought out of the gas loop operational mode, thereby increasing the energy efficiency of the cooling plant.

Abstract translation: 公开了一种用于监测冷却回路中的排热热交换器中的气体压力的方法。 在排热热交换器中，通过控制单元控制压力，所述控制单元控制至少一个阀。 与一个或多个压缩机的最大容量相比，建立冷却回路中一个或多个压缩机的当前容量。 最大容量可以是压缩机的额定容量，或者可以是在给定情况和/或给定操作条件下的最大容量。 如果一个或多个压缩机的当前容量至少处于与最大容量的预设百分比相对应的水平，则从压缩机容量达到所述水平的时间点到达的时间段被建立。 如果建立的时间段的持续时间长于预先设定的时间段，则判定冷却介质处于气体回路操作模式。 以简单的方式检测气体回路操作模式允许操作者或控制器以冷却介质脱离气体回路操作模式的方式调节冷却设备的操作，从而提高冷却设备的能量效率 。

公开(公告)号：US20140271259A1

公开(公告)日：2014-09-18

申请号：US14349765

申请日：2012-10-05

Applicant: Danfoss A/S

Inventor： Jan Prins

IPC: F04B41/06

CPC classification number: F04B41/06 ,  F25B1/10 ,  F25B7/00 ,  F25B49/022

Abstract: A method for coordinating operation between at least two groups of compressors in a cooling circuit is disclosed. A first group of compressors forms part of a low temperature (LT) part of the cooling circuit and a second group of compressors forms part of a high temperature (MT) part of the cooling circuit. Each of the compressor groups comprises one or more compressors, and each of the compressor groups comprises a controller, the controllers being capable of exchanging signals. In the case that the LT compressor group needs one or more of the LT compressors to start operation, it is investigated whether or not one or more of the MT compressors is/are operating. If this is the case, one or more of the LT compressors is/are allowed to start operation. If it is not the case, the suction pressure in the MT part of the cooling circuit is established, e.g. measured, and compared to a lower and an upper limit of a neutral pressure zone, said neutral pressure zone lying within an operating pressure zone of the MT part of the cooling circuit. Finally, the MT compressors and the LT compressors are operated based on the comparing step. The cooling system may be a cascade system or a booster system.

Abstract translation: 公开了一种用于协调冷却回路中的至少两组压缩机之间的操作的方法。 第一组压缩机形成冷却回路的低温（LT）部分的一部分，第二组压缩机形成冷却回路的高温（MT）部分的一部分。 每个压缩机组包括一个或多个压缩机，并且每个压缩机组包括控制器，控制器能够交换信号。 在LT压缩机组需要一台或多台LT压缩机开始运行的情况下，对MT压缩机中的一台或多台是否正在运行进行研究。 如果是这种情况，则允许一个或多个LT压缩机开始运行。 如果不是这样，则建立冷却回路的MT部分中的吸入压力，例如， 测量并与中性压力区域的下限和上限进行比较，所述中性压力区域位于冷却回路的MT部分的工作压力区域内。 最后，基于比较步骤操作MT压缩机和LT压缩机。 冷却系统可以是级联系统或增压系统。

公开(公告)号：US20140251586A1

公开(公告)日：2014-09-11

申请号：US14196209

申请日：2014-03-04

Applicant: Danfoss A/S

Inventor： Lars Persson

IPC: F28F3/04

CPC classification number: F28F3/044 ,  F28F3/083

Abstract: The invention relates to a gasketed heat exchanger comprising a plurality of heat exchanger plates, wherein each of the heat exchanger plates comprises a plurality of dimples. The dimples comprise tops and bottoms. Furthermore, the tops of at least one heat exchanger plate are connected to the bottoms of another neighboring heat exchanger plate. In order to prevent plastic deformations of the heat exchanger plates under external forces and internal fluid pressures the dimples are elastically deformable.

Abstract translation: 本发明涉及包括多个热交换器板的垫圈式热交换器，其中每个热交换器板包括多个凹坑。 凹坑包括顶部和底部。 此外，至少一个热交换器板的顶部连接到另一相邻热交换器板的底部。 为了防止热交换器板在外力和内部流体压力下的塑性变形，凹坑可弹性变形。

公开(公告)号：US20130306887A1

公开(公告)日：2013-11-21

申请号：US13868618

申请日：2013-04-23

Applicant: Danfoss A/S

Inventor： Verner Smidt ,  Lasse Nicolai Langmaack ,  Siegfried Zenker ,  Erik Haugaard ,  Carsten Christensen ,  Welm Friedrichsen

IPC: F16K31/12

CPC classification number: F16K31/12 ,  F16K31/406 ,  Y10T137/7837

Abstract: The invention concerns a valve arrangement (7) comprising a flow path (11) connecting an inlet (9) and an outlet (10), a closing means (12) arranged in said flow path (11), a resetting means and a first pressure in a first pressure chamber (14) acting in a closing direction on said closing means (12), a pressure of said outlet (10) and a second pressure in a second pressure chamber (18) corresponding to a pressure of said inlet (9) when said closing means (12) is closed acting in opening direction on said closing means (12), said first pressure chamber (14) being connectable to the outlet (10) via an auxiliary valve (13). It is intended to keep small a pressure pulse when opening the valve arrangement (7). This is achieved in that the closing means (12) having a first opening state (A) and a second opening state (B), a flow resistance of said closing means (12) in said first opening state (A) being larger than a flow resistance of said closing means in said second opening state (B).

Abstract translation: 本发明涉及一种阀装置（7），其包括连接入口（9）和出口（10）的流路（11），布置在所述流路（11）中的关闭装置（12），复位装置和第一 在所述关闭装置（12）上沿关闭方向作用的第一压力室（14）中的压力，所述出口（10）的压力和第二压力室（18）中对应于所述入口 9）当所述关闭装置（12）在所述关闭装置（12）的打开方向上闭合时，所述第一压力室（14）可经由辅助阀（13）连接到出口（10）。 打开阀门装置（7）时要保持较小的压力脉冲。 这是因为具有第一开启状态（A）和第二打开状态（B）的关闭装置（12），所述关闭装置（12）在所述第一打开状态（A）中的流动阻力大于 所述关闭装置在所述第二打开状态（B）中的流动阻力。