公开(公告)号：US09797639B2

公开(公告)日：2017-10-24

申请号：US13703053

申请日：2011-06-29

Applicant: Frede Schmidt

Inventor： Frede Schmidt

IPC: F25B13/00 ,  F25B49/02 ,  F25B40/00 ,  F25B41/06

CPC classification number: F25B49/02 ,  F25B40/00 ,  F25B41/062 ,  F25B2600/19 ,  F25B2600/21 ,  F25B2600/2513 ,  F25B2700/2103 ,  F25B2700/21151 ,  F25B2700/21175

Abstract: A vapor compression system comprises a compressor, a condenser, an expansion device, e.g. in the form of an expansions valve, and an evaporator arranged along a refrigerant path. A method for operating the vapor compression system comprises the steps of: obtaining a superheat value being representative for the superheat of refrigerant entering the compressor; obtaining a subcooling value being representative for the subcooling of refrigerant entering the expansion device; and operating the expansion device on the basis of the obtained superheat value and on the basis of the obtained subcooling value. The subcooling value is taken into account when operating the expansion device, because variations in the subcooling value have significant influence on the refrigerating capacity of the evaporator at a given opening degree of the expansion device, thereby resulting in a more stable operation of the system. The system may further comprise an internal heat exchanger.

公开(公告)号：US6164081A

公开(公告)日：2000-12-26

申请号：US308508

申请日：1999-05-19

Applicant: Kenn S.o slashed.nder Jensen ,  Frede Schmidt

Inventor： Kenn S.o slashed.nder Jensen ,  Frede Schmidt

IPC: F25B41/06 ,  F25B41/04

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

Abstract: In a process for regulating a refrigeration 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 vapor 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 refrigeration system (1) regulated in this manner and an expansion valve (4) as essential component of such a system. An improved, exonomic and universally applicable regulation can thus be obtained.

Abstract translation: PCT No.PCT / EP97 / 06357 Sec。 371日期1999年5月19日 102（e）日期1999年5月19日PCT 1997年11月14日PCT公布。 WO98 / 22763 PCT出版物 日期1998年5月28日在使用膨胀阀（4）调节制冷系统（1）的方法中，调节部件的一侧被压缩在制冷剂侧的蒸发器侧的压力，并且限制部件的另一侧被按压 传感器系统（22）的蒸汽压力由传感器温度由制冷剂饱和温度和加热元件（27）提供的热量决定。 供热根据测量值（过热或液位）进行调节。 还公开了以这种方式调节的制冷系统（1）和作为这种系统的主要部件的膨胀阀（4）。 因此可以获得改进的，经济的和普遍适用的调节。

公开(公告)号：US5966950A

公开(公告)日：1999-10-19

申请号：US286009

申请日：1999-04-05

Applicant: Frede Schmidt ,  Kenn S.o slashed.nder Jensen

Inventor： Frede Schmidt ,  Kenn S.o slashed.nder Jensen

IPC: F25B41/06 ,  F25B41/04

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而向传感器系统施加热能的装置。 通过将感测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热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：US5921098A

公开(公告)日：1999-07-13

申请号：US971784

申请日：1997-11-17

Applicant: Frede Schmidt ,  Kenn S.o slashed.nder Jensen

Inventor： Frede Schmidt ,  Kenn S.o slashed.nder Jensen

IPC: F25B41/06 ,  G05D23/30

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而向传感器系统施加热能的装置。 通过将感测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热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：US5782103A

公开(公告)日：1998-07-21

申请号：US817814

申请日：1997-04-15

Applicant: Frede Schmidt

Inventor： Frede Schmidt

IPC: F25B1/00 ,  F25B41/06 ,  G05B11/42 ,  G05D23/00 ,  G05D23/19 ,  F25B41/04

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

Abstract: A control arrangement for the superheat temperature of at least one evaporator of a refrigeration system having a refrigerant circulation, in which at least one compressor, a condenser, an electronically controlled expansion valve and the evaporator are arranged in series, contains a measuring device connected to the evaporator, which device produces a measurement signal Tu that is a measure of the superheat temperature of the refrigerant in the evaporator, a comparator to which the measurement signal Tu and a desired superheat temperature signal Tu.sub.s are arranged to be supplied, and a PID controller arranged between the comparator and the expansion valve. For rapid compensation of changes in the superheat temperature, a control signal S proportional to the evaporation temperature T.sub.o of the refrigerant is arranged to be supplied additionally to the PID controller.

Abstract translation: PCT No.PCT / DK95 / 00402 Sec。 371日期1997年04月15日 102（e）日期1997年4月15日PCT提交1995年10月11日PCT公布。 公开号WO96 / 12148 日期1996年4月25日，具有制冷剂循环的制冷系统的至少一个蒸发器的过热温度的控制装置，其中至少一个压缩机，冷凝器，电子控制膨胀阀和蒸发器串联布置， 连接到蒸发器的测量装置，该装置产生作为蒸发器中制冷剂的过热温度的量度的测量信号T + E，uml u + EE，测量信号T + E，uml u的比较器 + EE，并且设置所需的过热温度信号T + E，uml u + EE s，并且设置在比较器和膨胀阀之间的PID控制器。 为了快速补偿过热温度的变化，将与制冷剂的蒸发温度To成比例的控制信号S被布置成另外提供给PID控制器。

公开(公告)号：US6012299A

公开(公告)日：2000-01-11

申请号：US286011

申请日：1999-04-05

Applicant: Frede Schmidt ,  Kenn S.o slashed.nder Jensen

Inventor： Frede Schmidt ,  Kenn S.o slashed.nder Jensen

IPC: F25B41/06 ,  G05D23/30

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而向传感器系统施加热能的装置。 通过将感测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热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：US6018959A

公开(公告)日：2000-02-01

申请号：US916541

申请日：1998-05-08

Applicant: Frede Schmidt

Inventor： Frede Schmidt

IPC: F25B41/06 ,  G05D23/19 ,  F25B41/04

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

Abstract: In a method for controlling the superheat temperature (T.sub.u) 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 and a controllable expansion valve (4) are arranged in succession in a closed circuit. The superheat temperature (T.sub.u) is controlled in dependence on a comparison between desired and actual values. The desired value (W.sub.2) of the superheat temperature (T.sub.u is varied automatically in dependence on the difference (d) from a reference value (W.sub.1) of a periodically determined function (S) of a number of sampled values of a temperature (T.sub.1 ; T.sub.2) of the refrigerant with the aim of a stable control of the superheat temperature (T.sub.u). 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 (T.sub.2) of the refrigerant at the output of the evaporator arrangement (4) about a mean value of the sampled values.

Abstract translation: PCT No.PCT / DK96 / 00073 Sec。 371日期1998年5月8日 102（e）日期1998年5月8日PCT提交1996年2月19日PCT公布。 第WO96 / 26399号公报 日本1996年8月29日在一种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（T + E，uml u + EE）的方法中， （1），压缩机装置（2），冷凝器和可控制的膨胀阀（4）在闭合回路中相继布置。 根据期望值和实际值之间的比较来控制过热温度（T + E，uml u + EE）。 过热温度（T + E，uml u + EE）的期望值（W2）根据与采样数量的周期性确定函数（S）的参考值（W1）的差（d）自动变化 为了稳定控制过热温度（T + E，uml u + EE），制冷剂的温度值（T1; T2）为了达到最佳填充并优化这种系统的过热， 所述功能（S）用于表征蒸发器装置（4）的输出处的制冷剂的温度（T2）的多个取样值的变化关于采样值的平均值。

公开(公告)号：US20130074535A1

公开(公告)日：2013-03-28

申请号：US13703053

申请日：2011-06-29

Applicant: Frede Schmidt

Inventor： Frede Schmidt

IPC: 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 vapour compression system comprises a compressor, a condenser, an expansion device, e.g. in the form of an expansions valve, and an evaporator arranged along a refrigerant path. A method for operating the vapour compression system comprises the steps of: obtaining a superheat value being representative for the superheat of refrigerant entering the compressor; obtaining a subcooling value being representative for the subcooling of refrigerant entering the expansion device; and operating the expansion device on the basis of the obtained superheat value and on the basis of the obtained subcooling value. The subcooling value is taken into account when operating the expansion device, because variations in the subcooling value have significant influence on the refrigerating capacity of the evaporator at a given opening degree of the expansion device, thereby resulting in a more stable operation of the system. The system may further comprise an internal heat exchanger.

Abstract translation: 蒸气压缩系统包括压缩机，冷凝器，膨胀装置，例如压缩机。 以膨胀阀的形式和沿制冷剂路径布置的蒸发器。 一种用于操作蒸气压缩系统的方法包括以下步骤：获得代表进入压缩机的制冷剂过热的过热值; 获得代表进入膨胀装置的制冷剂的过冷的过冷值; 并基于获得的过热值并基于获得的过冷值操作膨胀装置。 在运行膨胀装置时考虑过冷值，因为过冷值的变化对膨胀装置的给定开度的蒸发器的制冷能力具有显着影响，从而导致系统的更稳定的运行。 该系统还可以包括内部热交换器。

公开(公告)号：US5806321A

公开(公告)日：1998-09-15

申请号：US836657

申请日：1997-05-02

Applicant: Christian Bendtsen ,  Frede Schmidt

Inventor： Christian Bendtsen ,  Frede Schmidt

IPC: F25B5/02 ,  F25D17/02 ,  F25D21/00

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

Abstract: A method for defrosting a refrigeration system makes provision for partial defrosting of the cooling surface 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 has four timers 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: PCT No.PCT / DK95 / 00433 Sec。 371日期：1997年5月2日 102（e）日期1997年5月2日PCT提交1995年11月2日PCT公布。 公开号WO96 / 14546 日期1996年5月17日一种制冷系统除霜方法，是以相对较短的间隔进行冷却面的部分除霜，并以较长的间隔进行全部除霜。 为此，相关联的控制单元具有四个定时器，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：US5749238A

公开(公告)日：1998-05-12

申请号：US793817

申请日：1997-02-14

Applicant: Frede Schmidt

Inventor： Frede Schmidt

IPC: F25B5/02 ,  F25B41/06 ,  F25B49/02 ,  F25B41/00

CPC classification number: F25B41/062 ,  F25B49/022 ,  F25B5/02 ,  F25B2341/065 ,  F25B2400/075 ,  F25B2400/22 ,  F25B2600/21 ,  F25B2600/2513 ,  Y02B30/72

Abstract: A control arrangement for cooling of an apparatus comprising a compressor, a condenser, and at least one branch with an expansion valve and an evaporator in series, contains a controller, a superheat temperature measuring device, and an ambient temperature sensor. The controller controls the expansion valve for maintaining the superheat temperature substantially at the desired value. The flow of coolant to the evaporator is controlled by the signal from the temperature sensor for maintaining the ambient temperature constant. The controller operates continuously and in two operating modes in which the first mode the superheat temperature is controlled to the maximum admissible state of fill of liquid coolant in the evaporator and is switchable to a second mode in which the state of fill of liquid coolant is controlled by the expansion valve.

Abstract translation: PCT No.PCT / DK95 / 00294 Sec。 371日期1997年2月14日 102（e）1997年2月14日PCT PCT 1995年7月7日PCT公布。 公开号WO96 / 07065 日期1996年3月7日用于冷却包括压缩机，冷凝器和具有膨胀阀和蒸发器的至少一个分支的装置的控制装置包括控制器，过热温度测量装置和环境温度传感器 。 控制器控制膨胀阀，以保持过热温度基本上达到所需值。 通过来自温度传感器的信号来控制冷却剂到蒸发器的流动，以保持环境温度恒定。 控制器连续工作，并且处于两种操作模式，其中第一模式将过热温度控制到蒸发器中液体冷却剂的最大允许状态，并且可切换到第二模式，其中控制液体冷却剂的填充状态 通过膨胀阀。