公开(公告)号：EP1802925B1

公开(公告)日：2009-12-30

申请号：EP05786428.2

申请日：2005-09-30

Applicant: Danfoss A/S

Inventor： LARSEN, Lars, Finn, Sloth ,  THYBO, Claus

IPC: F25B49/02 ,  F24F11/00

CPC classification number: F25B49/02 ,  F25B2400/075 ,  F25B2400/22 ,  F25B2500/05 ,  F25B2500/19

公开(公告)号：EP1565720A1

公开(公告)日：2005-08-24

申请号：EP03757722.8

申请日：2003-10-14

Applicant: Danfoss A/S

Inventor： THYBO, Claus ,  BENDTSEN, Christian

IPC: G01M19/00 ,  F28F27/00

CPC classification number: B60H1/00978 ,  B60H1/3227 ,  F25B49/005 ,  F28B11/00 ,  F28F27/00 ,  F28F2200/00 ,  G01M99/002

Abstract: A method and a device for detecting an abnormality of a heat exchanger exchanging heat between a first fluid flow flowing in a conduit and a second fluid flow flowing along a flow path, said conduit and said flow path each having an inlet and an outlet, whereby the method comprises the steps of: establishing at least one parameter representative of the temperature conditions of the heat exchanger, establishing a second fluid inlet temperature, establishing a parameter indicative of expected heat exchange between the heat exchanger and the second fluid, processing the heat exchanger temperature, the second fluid temperature and the parameter indicative of expected heat exchange for establishing an estimated second fluid outlet temperature, employing the estimated second fluid outlet temperature for evaluating the heat exchange between the first and second fluids by comparing the estimated second fluid outlet temperature, or a parameter derived therefrom, with a reference value.

公开(公告)号：EP1535006A1

公开(公告)日：2005-06-01

申请号：EP03735336.4

申请日：2003-07-03

Applicant: Danfoss A/S

Inventor： THYBO, Claus ,  RASMUSSEN, Bjarne, Dindler ,  LAURIDSEN, Steen ,  HELBERG, Vagn

IPC: F25B49/00

CPC classification number: F25B49/005 ,  F25B2500/19 ,  F25B2500/222

Abstract: A method and a device for detecting flash gas in a vapour-compression refrigeration or heat pump system comprising a compressor, a condenser, an expansion device, and an evaporator interconnected by conduits providing a flow path for a refrigerant, by determining a first rate of heat flow of a heat exchange fluid flow across a heat exchanger of the system and a second rate of heat flow of the refrigerant across the heat exchanger, and using the rates of heat flow for establishing an energy balance from which a parameter for monitoring the refrigerant flow is derived, to thereby provide early detection of flash gas with a minimum number of false alarms.

公开(公告)号：EP2300756B1

公开(公告)日：2019-03-27

申请号：EP09757138.4

申请日：2009-06-03

Applicant: Danfoss A/S

Inventor： BRAM, Leo ,  THYBO, Claus ,  LARSEN, Lars, Finn, Sloth

IPC: F25B39/02

公开(公告)号：EP3168541B1

公开(公告)日：2019-02-27

申请号：EP16198613.8

申请日：2016-11-14

Applicant: Danfoss A/S

Inventor： THYBO, Claus ,  GUDMUNDSSON, Oddgeir ,  BENONYSSON, Atli

IPC: F24D19/10 ,  G05D7/06

公开(公告)号：EP3168541A1

公开(公告)日：2017-05-17

申请号：EP16198613.8

申请日：2016-11-14

Applicant: Danfoss A/S

Inventor： THYBO, Claus ,  GUDMUNDSSON, Oddgeir ,  BENONYSSON, Atli

IPC: F24D19/10 ,  G05D7/06

CPC classification number: F24D19/1015 ,  F24D10/00 ,  Y02B30/17

Abstract: A flow network for distributing a heat transferring fluid between a plural of consumers, where the system in an embodiment is being operated under different modes of regulations, the basic being to balance a thermal flow system supplying heat transfer fluid at a supply flow rate and a supply temperature to a plural of consumers, where each consumer is associated with a connected control equipment (e.g. valves or pumps) configured to regulate the flow rate of the heat transferring fluid delivered to said consumer, the method being to regulate said control equipment such that the associated consumer receives a flow rate of heating fluid corresponding to a set fraction of the total supply flow rate.

Abstract translation: 用于在多个消耗器之间分配传热流体的流动网络，其中在一个实施例中的系统以不同的调节模式操作，基本的是平衡以供应流量供应传热流体的热流系统和 向多个消费者供应温度，其中每个消费者与连接的控制设备（例如阀门或泵）相关联，所述控制设备被配置为调节输送到所述消费者的热传递流体的流量，所述方法是调节所述控制设备， 相关消费者接收对应于总供应流量的设定分数的加热流体的流率。

公开(公告)号：EP2630422B1

公开(公告)日：2015-09-23

申请号：EP11776069.4

申请日：2011-10-19

Applicant: Danfoss A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  LARSEN, Lars, Finn, Sloth ,  THYBO, Claus

IPC: F25B41/06

CPC classification number: F25B49/02 ,  F25B41/062 ,  F25B2500/19 ,  F25B2600/21

Abstract: A method for controlling a supply of refrigerant to an evaporator (5) of a vapor compression system (1), such as a refrigeration system, an air condition system or a heat pump, is disclosed. The vapor compression system (1) comprises an evaporator (5), a compressor (2), a condenser (3) and an expansion device (4) arranged in a refrigerant circuit. The method comprises the steps of: Actuating a component, such as an expansion valve (4), a fan or a compressor (2), of the vapor compression system (1) in such a manner that a dry zone in the evaporator (5) is changed; measuring a temperature signal representing a temperature of refrigerant leaving the evaporator (5); analyzing the measured temperature signal, e.g. including deriving a rate of change signal; determining a temperature value where a gain of a transfer function between the actuated component and the measured temperature drops from a maximum value to a minimum value, in a decreasing temperature direction; defining the determined temperature value as corresponding to a zero superheat (SH=0) value of refrigerant leaving the evaporator (5), and controlling a supply of refrigerant to the evaporator (5) in accordance with the defined SH=0 temperature value, and on the basis of the measured temperature signal. The method steps may be repeated at certain time intervals in order to provide updated determinations of the SH=0 temperature value. The method allows the SH=0 point to be determined purely on the basis of the measured temperature signal. Subsequently, the supply of refrigerant to the evaporator (5) can be controlled purely on the basis of the measured temperature signal.

公开(公告)号：EP2414716B1

公开(公告)日：2015-02-25

申请号：EP10722572.4

申请日：2010-03-26

Applicant: Danfoss A/S

Inventor： THYBO, Claus

IPC: F16K47/02 ,  F25B41/06 ,  F16K11/074

CPC classification number: F16K47/023 ,  F16K11/074 ,  F25B41/062 ,  Y10T137/0318

公开(公告)号：EP2414716A1

公开(公告)日：2012-02-08

申请号：EP10722572.4

申请日：2010-03-26

Applicant: Danfoss A/S

Inventor： THYBO, Claus

IPC: F16K47/02 ,  F25B41/06 ,  F16K11/074

CPC classification number: F16K47/023 ,  F16K11/074 ,  F25B41/062 ,  Y10T137/0318

Abstract: A method for operating a valve comprising a first valve part (1) having at least one opening (2) and a second valve part (3) having at least one opening (4) formed is disclosed. The first (1) and second (3) valve parts are adapted to perform relative movements, the relative position of the opening(s) (2) of the first valve part (1) and the opening (s) (4) of the second valve part (3) defining an opening degree of the valve by means of an overlapping area of the openings (2, 4). The method comprises the step of moving the first valve part (1) and/or the second valve part (3) from a position defining a maximum opening degree of the valve towards a position defining a minimum opening degree of the valve in such a manner that the velocity of the relative movement between the first valve part (1) and the second valve part (3) is decreased as the overlapping area decreases.

公开(公告)号：EP2409058A1

公开(公告)日：2012-01-25

申请号：EP10710179.2

申请日：2010-03-15

Applicant: Danfoss A/S

Inventor： THYBO, Claus

IPC: F16K11/074

CPC classification number: F16K1/02 ,  F16K1/34 ,  F16K31/002 ,  Y10T137/86734 ,  Y10T137/86863

Abstract: A valve comprising an inlet opening adapted to receive fluid medium and at least two outlet openings, each being fluidly connected to a flow path being arranged fluidly in parallel, is disclosed. The valve comprises a first valve part (1) and a second valve part (3). The first valve part (1) has at least two flow passages (2) formed therein, each flow passage (2) being fluidly connected to one of the outlet openings. The second valve part (3) has at least one primary flow passage (4) and at least one secondary flow passage (5, 6, 7) formed therein, the primary flow passage(s) (4) and the secondary flow passage(s) (5, 6, 7) being fluidly connected to the inlet opening. The first valve part (1) and the second valve part (3) are movable relative to each other in such a manner that the mutual position of the first valve part (1) and the second valve part (3) determines a fluid flow between the inlet opening and each of the outlet openings, via the flow passages (2, 4, 5, 6, 7) of the first valve part (1) and the second valve part (3).