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：US08816251B2

公开(公告)日：2014-08-26

申请号：US12158184

申请日：2006-12-20

Applicant: Leif Olsen ,  Thomas Melballe ,  Taj Bernth ,  Verner Utoft

Inventor： Leif Olsen ,  Thomas Melballe ,  Taj Bernth ,  Verner Utoft

IPC: H05B1/00 ,  H05B3/34 ,  A47C21/04 ,  F24D13/02 ,  F24D3/14

CPC classification number: F24D3/141 ,  F24D13/02 ,  H05B3/342 ,  H05B2203/003 ,  H05B2203/014 ,  H05B2203/017 ,  Y02B30/26

Abstract: The invention concerns a heating or cooling mat (1) with a carrying sheet (2) having a top side (9) and a bottom side (11), and at least one heating and cooling unit (5) located on the carrying sheet (2), an adhesive being located on the bottom side (11) of the carrying sheet (2). It is endeavored to improve the handling properties of the heating or cooling mat. For this purpose, the adhesive is located on a double-sided adhesive tape (12), which is fixed on the bottom side (11) of the carrying sheet (2), the adhesive on the bottom side of the adhesive tape (12) being covered by the top side of the carrying sheet (2) and the adhesive tape (12) bonding with the top side of the carrying sheet (2) in the rolled up state of the heating or cooling mat (1).

Abstract translation: 本发明涉及具有带顶板（9）和底侧（11）的承载板（2）的加热或冷却垫（1）和位于承载板上的至少一个加热和冷却单元（5） 2），粘合剂位于承载板（2）的底侧（11）上。 努力提高加热或冷却垫的处理性能。 为此，粘合剂位于固定在承载板（2）的底侧（11）上的双面胶带（12）上，胶带（12）的底侧上的粘合剂， 在加热或冷却垫（1）的卷起状态下，由承载板（2）的顶侧和与承载板（2）的顶侧粘合的粘合带（12）被覆盖。

公开(公告)号：US20140223944A1

公开(公告)日：2014-08-14

申请号：US14346395

申请日：2012-09-14

Applicant: Bjarke Skovgard Dam ,  Hans Kurt Petersen

Inventor： Bjarke Skovgard Dam ,  Hans Kurt Petersen

IPC: F16K39/02 ,  F25B41/06

CPC classification number: F16K39/022 ,  F25B41/062

Abstract: A flow control valve (1) for a refrigeration system is disclosed. The valve (1) comprises a valve port (14) having a substantially cylindrical inner circumference arranged to receive a protruding portion of a valve member (5). The valve member (5) comprises a protruding portion having a substantially cylindrical outer circumference corresponding to the inner circumference of the valve port (14), said protruding portion also having at least one fluted part (16), said at least one fluted part (16) defining fluid passage along the at least one fluted part (16) when the valve member (5) is in the open position. The valve member (5) is provided with at least one first fluid passage (6) extending through the valve member (5) between a second valve chamber (15) and a pressure balancing chamber (8), and at least one second fluid passage (7) establishing a fluid connection between a first valve chamber (12) and the first fluid passage (6). The second fluid passage (7) has an opening arranged on the substantially cylindrical part of the protruding portion of the valve member (5). The invention allows the pressure of the balancing chamber (8) to be adjusted independently of the primary flow through the valve (1), via the fluted parts(s) (16).

Abstract translation: 公开了一种用于制冷系统的流量控制阀（1）。 阀（1）包括具有基本上圆柱形的内圆周的阀口（14），其布置成容纳阀构件（5）的突出部分。 阀构件（5）包括具有与阀口（14）的内周对应的基本上圆柱形的外周的突出部分，所述突出部分还具有至少一个槽纹部分（16），所述至少一个槽纹部分 16）当阀构件（5）处于打开位置时，沿着至少一个槽纹部分（16）限定流体通道。 阀构件（5）设置有在第二阀室（15）和压力平衡室（8）之间延伸穿过阀构件（5）的至少一个第一流体通道（6），以及至少一个第二流体通道 （7）在第一阀室（12）和第一流体通道（6）之间建立流体连接。 第二流体通道（7）具有布置在阀构件（5）的突出部分的大致圆柱形部分上的开口。 本发明允许经由槽纹部分（16）独立于通过阀（1）的主要流量调节平衡室（8）的压力。

公开(公告)号：US08783945B2

公开(公告)日：2014-07-22

申请号：US13059506

申请日：2009-08-18

Applicant: Asbjoern Leth Vonsild ,  Claus Thybo ,  Leo Bram ,  Jakob Spangberg

Inventor： Asbjoern Leth Vonsild ,  Claus Thybo ,  Leo Bram ,  Jakob Spangberg

IPC: G01N25/08 ,  G01N25/40

CPC classification number: F25B49/00 ,  F25B2700/21

Abstract: A superheat sensor (1) for sensing superheat of a fluid flowing in a flow channel (3) is disclosed. The sensor (1) comprises a flexible wall defining an interface between an inner cavity (5) having a charge fluid (6) arranged therein and the flow channel (3). The flexible wall is arranged in the flow channel (3) in thermal contact with the fluid flowing therein, and the flexible wall is adapted to conduct heat between the flow channel (3) and the inner cavity (5). Thereby the temperature of the charge fluid (6) adapts to the temperature of the fluid flowing in the flow channel (3), and the pressure in the inner cavity (5) is determined by this temperature. A first wall part (7, 14) and a second wall part (9, 16) are arranged at a variable distance from each other, said distance being defined by a differential pressure between the pressure of the charge fluid (6) and the pressure of the fluid flowing in the flow channel (3), i.e. depending on the pressure and the temperature of the fluid flowing in the flow channel (3), and thereby the superheat of the fluid. A distance sensor, e.g. comprising a permanent magnet (8) and a Hall sensor (10), measures the distance between the wall parts, and the superheat is calculated from the measured distance. The sensor (1) is suitable for use in a refrigeration system. The sensor (1) is mechanically simple and capable of determining the superheat by measuring only one parameter.

Abstract translation: 公开了一种用于感测在流动通道（3）中流动的流体的过热的过热传感器（1）。 传感器（1）包括限定在其中布置有充电流体（6）的内腔（5）和流动通道（3）之间的界面的柔性壁。 柔性壁布置在流动通道（3）中，与流过其中的流体热接触，柔性壁适于在流动通道（3）和内腔（5）之间传导热量。 由此，充电流体（6）的温度适应于在流动通道（3）中流动的流体的温度，并且内腔（5）中的压力由该温度确定。 第一壁部分（7,14）和第二壁部分（9,16）以彼此可变的距离布置，所述距离由加压流体（6）的压力和压力 在流动通道（3）中流动的流体，即取决于在流动通道（3）中流动的流体的压力和温度，从而流体的过热。 距离传感器，例如 包括永磁体（8）和霍尔传感器（10），测量壁部之间的距离，并根据测量的距离计算过热度。 传感器（1）适用于制冷系统。 传感器（1）机械简单，能够通过仅测量一个参数来确定过热。

公开(公告)号：US08769976B2

公开(公告)日：2014-07-08

申请号：US12663040

申请日：2008-06-11

Applicant: Claus Thybo ,  Rafael Wisniewski

Inventor： Claus Thybo ,  Rafael Wisniewski

IPC: F25B49/00 ,  F25B41/04 ,  F25B41/06 ,  F25D23/12 ,  G05D23/20

CPC classification number: F25B5/02 ,  F25B49/02 ,  F25B2600/21 ,  F25B2600/2511

Abstract: A method for controlling a refrigerant distribution in a vapour compression system, such as a refrigeration system, e.g. an air condition system, comprising at least two evaporators. The refrigerant distribution determines the distribution of the available amount of refrigerant among the evaporators. While monitoring a superheat, SH, at a common outlet for the evaporators, the distribution of refrigerant is modified in such a manner that a mass flow of refrigerant to a first evaporator is altered in a controlled manner. The impact on the monitored SH is then observed, and this is used for deriving information relating to the behaviour of the first evaporator, in the form of a control parameter. This is repeated for each evaporator, and the refrigerant distribution is adjusted on the basis of the control parameters. The impact may be in the form of a significant change in SH. Alternatively, the control parameter may reflect a change in SH occurring as a result of the modification of the distribution of refrigerant.

Abstract translation: 一种用于控制蒸气压缩系统中的制冷剂分布的方法，例如制冷系统，例如， 空调系统，包括至少两个蒸发器。 制冷剂分配确定蒸发器中可用量的制冷剂的分布。 在监测蒸发器的公共出口处的过热（SH）的情况下，制冷剂的分布以这样的方式被改变，使得以受控的方式改变第一蒸发器的制冷剂的质量流量。 然后观察对所监视的SH的影响，并且这用于以控制参数的形式导出与第一蒸发器的行为有关的信息。 对于每个蒸发器重复这一点，并且基于控制参数来调节制冷剂分配。 影响可能是SH的重大变化。 或者，控制参数可以反映由于制冷剂分布的改变而出现的SH的变化。

公开(公告)号：US08641010B2

公开(公告)日：2014-02-04

申请号：US13144177

申请日：2010-01-11

Applicant: Ole Holst Christensen

Inventor： Ole Holst Christensen

IPC: F16K31/02

CPC classification number: F16K31/0675 ,  H01F7/127

Abstract: The invention provides a valve comprising a tube for guiding movement of a plunger, a solenoid which can be arranged about the tube, and a yoke which can be positioned in an operational position relative to the tube and relative to the solenoid so that it provides a magnetic path between the solenoid and portions of the tube. The yoke engages the tube and thereby prevents removal of the solenoid from tube. The invention thereby provides a very simple valve design with a low amount of components. The invention further provides a method of making a valve including fixing a solenoid to a tube by use of a yoke which engages the tube.

Abstract translation: 本发明提供了一种阀，其包括用于引导柱塞的运动的管，可围绕管布置的螺线管以及可相对于管定位在相对于螺线管的操作位置并且相对于螺线管的轭， 螺线管与管部分之间的磁路。 轭与管接合，从而防止螺线管从管中移除。 因此，本发明提供了具有少量部件的非常简单的阀设计。 本发明还提供一种制造阀的方法，该阀包括通过使用与管接合的轭固定螺线管至管。

公开(公告)号：US08596552B2

公开(公告)日：2013-12-03

申请号：US11577405

申请日：2005-10-14

Applicant: Holger Nicolaisen ,  Jens Erik Rasmussen ,  Torben Funder-Kristensen ,  Joergen Trelle-Pedersen ,  Torben Matzon ,  Anders Vestergaard ,  Lars Mou Jessen

Inventor： Holger Nicolaisen ,  Jens Erik Rasmussen ,  Torben Funder-Kristensen ,  Joergen Trelle-Pedersen ,  Torben Matzon ,  Anders Vestergaard ,  Lars Mou Jessen

IPC: F25B41/04

CPC classification number: F25B41/062 ,  F25B9/008 ,  F25B2309/061 ,  F25B2341/063 ,  F25B2700/21163

Abstract: A valve (4) for a refrigeration system. Comprises two diaphragms (8, 10) being operatively connected. One diaphragm (8) is in contact with the refrigerant, the other (10) is in contact with the filling fluid. The two diaphragms (8, 10) may have different active areas. In combination with the connection between the two diaphragms (8, 10) this provides a ‘pressure gearing’ between the filling fluid and the refrigerant. Allows the pressure of the filling fluid to be relatively low even when the pressure of the refrigerant is high, while ensuring that the valve (4) can function properly. Particularly suitable for high pressure refrigeration systems, such as CO2 systems.

Abstract translation: 一种用于制冷系统的阀（4）。 包括可操作地连接的两个隔膜（8,10）。 一个隔板（8）与制冷剂接触，另一个（10）与填充流体接触。 两个隔膜（8,10）可以具有不同的有效区域。 结合两个隔膜（8,10）之间的连接，这提供了填充流体和制冷剂之间的“压力传递”。 即使在制冷剂的压力高的同时，即使确保阀（4）能够正常工作，也能够使填充液的压力相对较低。 特别适用于高压制冷系统，如CO2系统。

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。

公开(公告)号：US20130213627A1

公开(公告)日：2013-08-22

申请号：US13822609

申请日：2011-06-27

Applicant: Huazhao Liu ,  B. Andrew Musser ,  Stefan Elbel ,  Bjøran Vestergaard

Inventor： Huazhao Liu ,  B. Andrew Musser ,  Stefan Elbel ,  Bjøran Vestergaard

IPC: F28F1/00

CPC classification number: F28F1/00 ,  F25B39/00 ,  F25B39/028 ,  F25B2500/01 ,  F28D1/05316 ,  F28D1/05366 ,  F28F1/126 ,  F28F9/0273

Abstract: A refrigerant guiding pipe for a heat exchanger having: a pipe wall in which an inner chamber is formed, an opening formed in the pipe wall, and a refrigerant guiding wall portion, at least a part of the refrigerant guiding wall being disposed to be substantially inclined with respect to an axial direction of the refrigerant guiding pipe to guide refrigerant passing through the opening. The refrigerant guiding wall portion is a recessed wall section depressed towards the inner chamber. The refrigerant guiding pipe can distribute and guide refrigerant well to help avoid non-uniform distribution of refrigerant due to layering of gaseous refrigerant and liquid refrigerant

Abstract translation: 一种用于热交换器的制冷剂引导管，其具有：形成有内室的管壁，形成在管壁中的开口和制冷剂引导壁部，所述制冷剂引导壁的至少一部分被设置为基本上 相对于制冷剂引导管的轴向倾斜以引导通过开口的制冷剂。 制冷剂引导壁部分是朝向内室压下的凹入壁部分。 制冷剂引导管可以很好地分配和引导制冷剂，以有助于避免由于气态制冷剂和液体制冷剂的分层而导致的制冷剂不均匀分布