公开(公告)号：WO1998022762A1

公开(公告)日：1998-05-28

申请号：PCT/DK1997000528

申请日：1997-11-17

Applicant: DANFOSS A/S ,  SCHMIDT, Frede ,  JENSEN, Kenn, Sonder

Inventor： DANFOSS A/S

IPC: F25B41/06

CPC classification number: F25B41/062 ,  F25B2341/0681 ,  F25B2500/05 ,  F25B2600/21

Abstract: A process for controlling a refrigeration system, as well as the refrigeration system and a new expansion valve for the refrigeration system. An electronic regulator is used to operate a sensor system having a device for applying heat power to the sensor system in direct dependence on sensed superheat of the refrigerant leaving the evaporator. By locating the sensing system in communication with liquid refrigerant upstream of the evaporator, heat transfer to the liquid refrigerant is utilized for operation of the sensor system rather than heat transfer to the superheat, resulting in a far more stable and efficient refrigeration control.

Abstract translation: 一种用于控制制冷系统的方法，以及用于制冷系统的制冷系统和新的膨胀阀。 电子调节器用于操作传感器系统，该传感器系统具有直接依赖于离开蒸发器的制冷剂的感测过热来向传感器系统施加热能的装置。 通过将传感系统定位成与蒸发器上游的液体制冷剂连通，利用传热到液体制冷剂的传感器系统的运行而不是传热到过热器，导致更稳定和高效的制冷控制。

公开(公告)号：WO2012000501A3

公开(公告)日：2012-05-10

申请号：PCT/DK2011000076

申请日：2011-06-29

Applicant: DANFOSS AS ,  SCHMIDT FREDE

Inventor： SCHMIDT FREDE

IPC: F25B40/00 ,  F25B41/06 ,  F25B49/02

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。 蒸气压缩系统（1）包括压缩机（2），冷凝器（3），膨胀装置（4） 以膨胀阀的形式和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; 并基于获得的过热值，并基于获得的过冷值来操作膨胀装置（4）。 优选的是，在膨胀装置（4）的运行时考虑到过冷值，因为过冷值的变化对膨胀装置的给定开度的蒸发器（5）的制冷能力有显着的影响（ 4）。 因此，考虑过冷值时，可以获得更稳定的蒸气压缩系统（1）的运转。 蒸气压缩系统（1）可以有利地进一步包括内部热交换器（6），例如， 以抽吸线热交换器的形式。

公开(公告)号：WO1996014546A1

公开(公告)日：1996-05-17

申请号：PCT/DK1995000433

申请日：1995-11-02

Applicant: DANFOSS A/S ,  BENDTSEN, Christian ,  SCHMIDT, Frede

Inventor： DANFOSS A/S

IPC: F25D21/00

CPC classification number: F25D21/008 ,  F25B5/02 ,  F25B2400/22 ,  F25D17/02

Abstract: A method for defrosting a refrigeration system (38) makes provison for partial defrosting of the cooling surface (39) to be carried out at relatively short intervals, and for full defrosting to be carried out at longer intervals. To that end an associated control unit (41) has four timers (44 to 47) which determine the switching on and switching off times of the defrosting processes. In this manner the interval between successive full defrostings can be considerably increased.

Abstract translation: 一种用于对制冷系统（38）进行除霜的方法使得要以相对短的间隔进行冷却表面（39）的部分除霜，并且以更长的间隔进行完全除霜。 为此，相关联的控制单元（41）具有四个定时器（44至47），其确定除霜过程的接通和关闭时间。 以这种方式，连续完全除霜之间的间隔可以大大增加。

公开(公告)号：WO1996007065A1

公开(公告)日：1996-03-07

申请号：PCT/DK1995000294

申请日：1995-07-07

Applicant: DANFOSS A/S ,  SCHMIDT, Frede

Inventor： DANFOSS A/S

IPC: F25B41/06

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).

Abstract translation: 用于冷却包括压缩机（1），冷凝器（2）和具有膨胀阀（4）和蒸发器（5）的至少一个分支（3）的装置的控制装置包括控制器（6） 过热温度测量装置（8）和环境温度传感器（7）。 控制器（6）控制膨胀阀（4），用于将过热温度保持在基本上保持在期望值。 通过来自温度传感器（7）的信号来控制冷却剂到蒸发器（5）的流动，以保持环境温度恒定。 控制器（6）在两种操作模式中连续操作，其中在第一模式中过热温度被控制到蒸发器（5）中液体冷却剂的最大允许状态，并且可切换到第二模式，其中 液体冷却剂的填充状态由膨胀阀（4）控制。

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。

公开(公告)号：WO1996012148A1

公开(公告)日：1996-04-25

申请号：PCT/DK1995000402

申请日：1995-10-11

Applicant: DANFOSS A/S ,  SCHMIDT, Frede

Inventor： DANFOSS A/S

IPC: F25B41/06

CPC classification number: F25B41/062 ,  F25B2341/065 ,  F25B2600/21 ,  F25B2600/2513 ,  F25B2700/21174 ,  F25B2700/21175 ,  G05B11/42 ,  G05D23/1931 ,  Y02B30/72

Abstract: A control arrangement for the superheat temperature of at least one evaporator (8) of a refrigeration system having a refrigerant circulation, in which at least one compressor, a condenser, an electronically controlled expansion valve (7) and the evaporator (8) are arranged in series, contains a measuring device (9, 10, 11) connected to the evaporator (8), which device produces a measurement signal (Tü) that is a measure of the superheat temperature of the refrigerant in the evaporator (8), a comparator (1) to which the measurement signal (Tü) and a desired superheat temperature signal (Tüs) are arranged to be supplied, and a PID controller (2) arranged between the comparator (1) and the expansion valve (7). For rapid compensation of changes in the superheat temperature, a control signal (S) proportional to the evaporation temperature (To) of the refrigerant is arranged to be supplied additionally to the PID controller (2).

Abstract translation: 具有制冷剂循环的制冷系统的至少一个蒸发器（8）的过热温度的控制装置，其中至少一个压缩机，冷凝器，电子控制膨胀阀（7）和蒸发器（8）布置在其中 串联地包含连接到蒸发器（8）的测量装置（9,10,11），该装置产生作为蒸发器（8）中制冷剂的过热温度的量度的测量信号（Tü）， 配置有测量信号（Tü）和期望的过热温度信号（Tüs）的比较器（1）以及设置在比较器（1）和膨胀阀（7）之间的PID控制器（2）。 为了快速补偿过热温度的变化，与PID控制器（2）另外提供与制冷剂的蒸发温度（To）成比例的控制信号（S）。

公开(公告)号：WO1998022763A1

公开(公告)日：1998-05-28

申请号：PCT/EP1997006357

申请日：1997-11-14

Applicant: DANFOSS A/S ,  JENSEN, Kenn, Sonder ,  SCHMIDT, Frede

Inventor： DANFOSS A/S

IPC: F25B41/06

CPC classification number: F25B41/062 ,  F25B2341/0681 ,  F25B2500/05 ,  F25B2600/21

Abstract: In a process for regulating a refrigerating system (1) using an expansion valve (4), one side of the regulating member is pressed by the pressure of refrigerant at the evaporator side and the other side of the regulating member is pressed by the vapour pressure of a sensor system (22) whose sensor temperature is determined by the refrigerant saturation temperature and by the heat supplied by a heating element (27). Heat supply is regulated depending on a measurement value (overheating or liquid level). Also disclosed is a refrigerating system (1) regulated in this manner and an expansion valve (4) as essential component of such a system. An improved, economic and universally applicable regulation can thus be obtained.

Abstract translation: 一种控制制冷系统（1）的方法，由所述制冷剂的饱和温度使用的膨胀阀（4），其中，从所述蒸发器侧的制冷剂压力的致动器和从一个传感器系统的蒸汽压力的致动器的另一侧的所述一侧（22）被加载，传感器温度和 通过热供给通过加热元件（27）来确定。 供热以依赖控制的测定值（过热或液面）。 此外，提供了一种制冷系统（1），用于这种方案的实现和膨胀阀（4）作为必要成分。 这样就可以实现对成本和通用的方式改进的控制。

公开(公告)号：WO1996026399A1

公开(公告)日：1996-08-29

申请号：PCT/DK1996000073

申请日：1996-02-19

Applicant: DANFOSS A/S ,  SCHMIDT, Frede

Inventor： DANFOSS A/S

IPC: F25B41/06

CPC classification number: F25B41/062 ,  F25B2600/21 ,  F25B2600/2513 ,  F25B2700/21174 ,  F25B2700/21175 ,  G05D23/1919

Abstract: In a method for controlling the superheat temperature (Tü) of the refrigerant in an evaporator arrangement (1) of a refrigeration system or heat pump system (1-4), the evaporator arrangement (1), a compressor arrangement (2), a condenser (3) and a controllable expansion valve arrangement (4) are arranged in succession in a closed circuit. The superheat temperature (Tü) is controlled in dependence on a comparison between desired and actual values. The desired value (W2) of the superheat temperature (Tü is varied automatically in dependence on the difference (d) from a reference value (W1) of a periodically determined function (S) of a number of sampled values of a temperature (T1; T2) of the refrigerant with the aim of a stable control of the superheat temperature (Tü). To achieve optimum filling and to optimize the superheating in such systems, provision is made for the said function (S) to characterize the variability of a number of sampled values of the temperature (T2) of the refrigerant at the output of the evaporator arrangement (4) about a mean value of the sampled values.

Abstract translation: 在用于控制制冷系统或热泵系统（1-4）的蒸发器装置（1）中的制冷剂的过热温度（Tü）的方法中，蒸发器装置（1），压缩机装置（2）， 冷凝器（3）和可控制的膨胀阀装置（4）被连续布置在闭合回路中。 过热温度（Tü）根据期望值和实际值之间的比较进行控制。 过热温度（Tü）的期望值（W2）根据与温度（T1; ...）的采样值的周期性确定函数（S）的参考值（W1）的差（d）自动变化。 T2），以便稳定地控制过热温度（Tü），为了实现最佳填充并优化这种系统的过热，规定了所述功能（S）来表征数字的变异性 在蒸发器装置（4）的输出处的制冷剂的温度（T2）的采样值约为采样值的平均值。