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31.发明申请
公开(公告)号：WO2016078824A1
公开(公告)日：2016-05-26
申请号：PCT/EP2015/073155
申请日：2015-10-07
Applicant: DANFOSS A/S
Inventor： FREDSLUND, Kristian , SCHMIDT, Frede , MADSEN, Kenneth Bank , PRINS, Jan
CPC classification number: F25B9/008 , F25B41/043 , F25B49/02 , F25B2309/061 , F25B2341/0662 , F25B2400/075 , F25B2400/13 , F25B2400/23 , F25B2500/29 , F25B2500/31 , F25B2600/0253 , F25B2600/2509 , F25B2700/195 , F25B2700/2106 , F25B2700/21163 , Y02B30/741
Abstract: A method for controlling a vapour compression system (1), the vapour compression system (1) comprising a compressor unit (2) comprising one or more compressors (10, 11, 13), is disclosed. At least one of the compressors (11, 13) of the compressor unit (2) is connectable to a gaseous outlet (9) of a receiver (5), and at least one of the compressors (10, 13) of the compressor unit (2) is connectable to an outlet of an evaporator (7). A parameter of the vapour compression system (1) is measured, an enthalpy of refrigerant leaving the heat rejecting heat exchanger (3) being derivable from the measured parameter. A setpoint value for a pressure inside the receiver (5) is calculated, based on the measured parameter, and the compressor unit (2) is operated in accordance with the calculated setpoint value, and in order to obtain a pressure inside the receiver (5) which is equal to the calculated setpoint value. The vapour compression system (1) is operated in an energy efficient manner over a wide range of ambient temperatures.
Abstract translation: 公开了一种用于控制蒸汽压缩系统（1）的方法，所述蒸汽压缩系统（1）包括包括一个或多个压缩机（10,11,13）的压缩机单元（2）。 压缩机单元（2）的至少一个压缩机（11,13）可连接到接收器（5）的气体出口（9），压缩机单元（2）的至少一个压缩机（10,13） （2）可连接到蒸发器（7）的出口。 测量蒸气压缩系统（1）的参数，离开排热热交换器（3）的制冷剂焓可从测量参数推导出。 基于测量参数计算接收器（5）内的压力的设定值，并且根据计算的设定值操作压缩机单元（2），并且为了获得接收器内部的压力（5 ），其等于计算的设定值。 蒸汽压缩系统（1）在宽范围的环境温度下以能量有效的方式操作。
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公开(公告)号：WO2014082888A1
公开(公告)日：2014-06-05
申请号：PCT/EP2013/074073
申请日：2013-11-18
Applicant: DANFOSS A/S
Inventor： PRINS, Jan , SCHMIDT, Frede , GREEN, Torben
CPC classification number: F25B7/00 , F25B5/02 , F25B6/00 , F25B49/02 , F25B49/022 , F25B2400/075 , F25B2600/0251 , F25B2600/0253 , F25B2600/0272 , F25B2600/2513 , F25B2700/21172 , F25D2600/06 , Y02B30/741
Abstract: A method for controlling operation of a refrigeration system (1), comprising one or more refrigeration entities (4), is disclosed. Each entity controller (7) obtains a measure for an error value between the measured value of a compressor control parameter and a setpoint value (8) for the compressor control parameter, and each entity controller (7) adjusts a refrigeration load of the corresponding refrigeration entity (4) to correspond to a cooling capacity of the compressor(s) (2), and in accordance with the obtained measure for an error value.
Abstract translation: 公开了一种用于控制包括一个或多个制冷实体（4）的制冷系统（1）的操作的方法。 每个实体控制器（7）获得压缩机控制参数的测量值和压缩机控制参数的设定值（8）之间的误差值的测量值，并且每个实体控制器（7）调整相应制冷器的制冷负荷 实体（4）对应于压缩机（2）的冷却能力，并且根据获得的误差值测量值。
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33.发明申请
公开(公告)号：WO2013156158A1
公开(公告)日：2013-10-24
申请号：PCT/EP2013/001167
申请日：2013-04-19
Applicant: DANFOSS A/S
Inventor： PRINS, Jan , SCHMIDT, Frede
IPC: F25B49/02
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, T 1 , of refrigerant leaving the heat rejecting heat exchanger, establishing a temperature, T 2 , of ambient air of the heat rejecting heat exchanger, and deriving a temperature difference, ΔΤ=Τ 1 -Τ 2 , between the temperature (T 1 ) of refrigerant leaving the heat rejecting heat exchanger and the temperature (T 2 ) of ambient air of the heat rejecting heat exchanger. The temperature difference, ΔΤ, 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。 该方法包括以下步骤：建立离开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，并且导出温度差ΔTau= Tau1-Tau2， 离开散热热交换器的制冷剂的温度（T1）和排热热交换器的环境空气的温度（T2）。 将温度差DeltaTau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，并且基于比较来控制风扇的转速 步。 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。
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公开(公告)号：WO2013050035A1
公开(公告)日：2013-04-11
申请号：PCT/DK2012/000109
申请日：2012-10-05
Applicant: DANFOSS A/S
Inventor： MADSEN, Kenneth, Bank , SCHMIDT, Frede
IPC: F25B49/00
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 。
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35.发明申请
公开(公告)号：WO2012000501A2
公开(公告)日：2012-01-05
申请号：PCT/DK2011/000076
申请日：2011-06-29
Applicant: DANFOSS A/S , SCHMIDT, Frede
Inventor： SCHMIDT, Frede
IPC: F25B40/00
CPC classification number: F25B49/02 , F25B40/00 , F25B41/062 , F25B2600/19 , F25B2600/21 , F25B2600/2513 , F25B2700/2103 , F25B2700/21151 , F25B2700/21175
Abstract: A method for operating a vapour compression system (1) is disclosed. The vapour compression system (1) comprises a compressor (2), a condenser (3), an expansion device (4), e.g. in the form of an expansions valve, and an evaporator (5) arranged along a refrigerant path. The method comprises the steps of: obtaining a superheat value being representative for the superheat of refrigerant entering the compressor (2); obtaining a subcooling value being representative for the subcooling of refrigerant entering the expansion device (4); and operating the expansion device (4) on the basis of the obtained superheat value and on the basis of the obtained subcooling value. It is an advantage that the subcooling value is taken into account when operating the expansion device (4), because variations in the subcooling value has significant influence on the refrigerating capacity of the evaporator (5) at a given opening degree of the expansion device (4). A more stable operation of the vapour compression system (1) is therefore obtained when taking the subcooling value into consideration. The vapour compression system (1) may advantageously further comprise an internal heat exchanger (6), e.g. in the form of a suction line heat exchanger.
Abstract translation: 公开了一种用于操作蒸气压缩系统（1）的方法。 蒸汽压缩系统（1）包括压缩机（2），冷凝器（3），膨胀装置（4），例如压缩机。 以膨胀阀的形式，以及沿制冷剂路径布置的蒸发器（5）。 该方法包括以下步骤：获得代表进入压缩机（2）的制冷剂的过热的过热值; 获得代表进入膨胀装置（4）的制冷剂过冷的过冷值; 以及基于所获得的过热值并基于所获得的过冷值操作膨胀装置（4）。 有利的是，当操作膨胀装置（4）时考虑过冷值，因为在膨胀装置（4）的给定开度处过冷值的变化对蒸发器（5）的制冷能力有显着影响 4）。 因此当考虑过冷值时，蒸汽压缩系统（1）的运行更加稳定。 蒸汽压缩系统（1）可以有利地进一步包括内部热交换器（6），例如内部热交换器。 以吸入管路换热器的形式。
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Patent Agency Ranking36.发明公开
公开(公告)号：EP3545242A1
公开(公告)日：2019-10-02
申请号：EP17797958.0
申请日：2017-11-15
Applicant: Danfoss A/S
Inventor： PRINS, Jan , SCHMIDT, Frede , MADSEN, Kenneth Bank , FREDSLUND, Kristian
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37.发明授权
公开(公告)号：EP3365619B1
公开(公告)日：2019-08-21
申请号：EP16781479.7
申请日：2016-10-14
Applicant: Danfoss A/S
Inventor： PRINS, Jan , SCHMIDT, Frede , MADSEN, Kenneth, Bank , FREDSLUND, Kristian
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38.发明公开
公开(公告)号：EP3303944A1
公开(公告)日：2018-04-11
申请号：EP16725122.2
申请日：2016-05-25
Applicant: Danfoss A/S
Inventor： SCHMIDT, Frede , FREDSLUND, Kristian , PRINS, Jan
CPC classification number: F25B29/003 , F25B1/10 , F25B40/04 , F25B49/022 , F25B2400/075 , F25B2400/13 , F25B2400/23 , Y02B30/52
Abstract: A method for operating a vapour compression system (1) comprising a heat recovery heat exchanger (4) is disclosed. The heat recovery system requests a required level of recovered heat to be provided by the heat recovery heat exchanger (4) to the heat recovery system, generates a signal indicating the required level of recovered heat, and supplies the generated signal to a control unit of the vapour compression system (1). A setpoint value for at least one control parameter of the vapour compression system (1) is calculated, based on the generated signal, and the vapour compression system (1) is operated in accordance with the calculated setpoint value(s).
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公开(公告)号：EP0776449B1
公开(公告)日：1999-01-20
申请号：EP95925746.0
申请日：1995-07-07
Applicant: Danfoss A/S
Inventor： SCHMIDT, Frede
CPC classification number: F25B41/062 , F25B5/02 , F25B49/022 , F25B2341/065 , F25B2400/075 , F25B2400/22 , F25B2600/21 , F25B2600/2513 , Y02B30/72
Abstract: A control arrangement for cooling of apparatus comprising a compressor (1), a condenser (2) and at least one branch (3) with an expansion valve (4) and an evaporator (5) in series, contains a controller (6), a superheat temperature measuring device (8) and an ambient temperature sensor (7). The controller (6) controls the expansion valve (4) for maintaining the superheat temperature substantially at the desired value. The flow of coolant to the evaporator (5) is controlled by the signal from the temperature sensor (7) for maintaining the ambient temperature constant. The controller (6) operates continuously and in two operating modes in which in the first mode the superheat temperature is controlled to the maximum admissible state of fill of liquid coolant in the evaporator (5), and is switchable to a second mode in which the state of fill of liquid coolant is controlled by the expansion valve (4).
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公开(公告)号：EP3334985B1
公开(公告)日：2019-05-01
申请号：EP16733622.1
申请日：2016-07-01
Applicant: Danfoss A/S
Inventor： PRINS, Jan , SCHMIDT, Frede , MADSEN, Kenneth Bank , FREDSLUND, Kristian
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