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公开(公告)号：WO2018177956A1
公开(公告)日：2018-10-04
申请号：PCT/EP2018/057515
申请日：2018-03-23
Applicant: DANFOSS A/S
Inventor： PRINS, Jan , MADSEN, Kenneth Bank , LARSEN, Lars Finn Sloth
Abstract: A method for controlling a vapour compression system (1) is disclosed. The vapour compression system (1) comprises an ejector (6) and a liquid separating device (10) arranged in a suction line. A liquid level sensor (18) is arranged in the liquid separating device (10). A liquid level in the liquid separating device (10) is monitored by means of the liquid level sensor (18). In the case that the liquid level in the liquid separating device (10) is above a predefined threshold level, a control parameter of the vapour compression system (1) is adjusted in order to increase a flow rate of refrigerant from the liquid separating device (10) to the secondary inlet (15) of the ejector (6) and/or decrease a flow rate of liquid refrigerant from the evaporator(s) (9) to the liquid separating device (10).
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公开(公告)号：WO2018157961A1
公开(公告)日：2018-09-07
申请号：PCT/EP2017/083858
申请日：2017-12-20
Applicant: DANFOSS A/S
Inventor： LARSEN, Lars Finn Sloth , PRINS, Jan , MADSEN, Kenneth Bank
Abstract: A method for controlling ejector capacity in a vapour compression system (1) is disclosed. A parameter value being representative for a flow rate of liquid refrigerant from the evaporator(s) (8, 10) and into a return pipe (12, 13) is obtained, and the capacity of the ejector(s) (6) is adjusted based on the obtained parameter value. Ejector capacity may be shifted between low pressure ejectors (liquid ejectors) (6a, 6b, 6c, 6d) and high pressure ejectors (gas ejectors) (6e, 6f).
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公开(公告)号：WO2020064351A1
公开(公告)日：2020-04-02
申请号：PCT/EP2019/074352
申请日：2019-09-12
Applicant: DANFOSS A/S
Inventor： PRINS, Jans , LARSEN, Lars Finn Sloth
IPC: F25B49/02
Abstract: A method for controlling a vapour compression system (1) comprising a compressor unit (2) comprising one or more compressors (3, 12), a heat rejecting heat exchanger (4), a receiver (6), an expansion device (7) and an evaporator (8) arranged in a refrigerant path. A pressure value indicating a pressure prevailing inside the receiver (6) is obtained, and the obtained pressure value is compared to a first threshold pressure value. In the case that the obtained pressure value is below the first threshold pressure value, the compressor(s) (3, 12) of the compressor unit (2) are controlled in order to reduce a suction pressure of the vapour compression system (1).
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公开(公告)号：WO2009039849A1
公开(公告)日：2009-04-02
申请号：PCT/DK2008/000332
申请日：2008-09-24
Applicant: DANFOSS A/S , THYBO, Honglian , THYBO, Claus , LARSEN, Lars Finn Sloth
Inventor： THYBO, Honglian , THYBO, Claus , LARSEN, Lars Finn Sloth
CPC classification number: F24D19/1009 , F24D3/12 , F24D5/02 , F24F2130/00 , F24F2130/10 , Y02A30/12 , Y02B10/20 , Y02B10/70
Abstract: The invention provides a method of controlling a release of thermal energy in a building. The method comprises steps of defining a control criterion for the building, defining a set of climate variables which influence the release of thermal energy in the building, and defining for each climate variable, a climate signification index which defines the importance of that climate variable for the release of thermal energy in the building. Furthermore, the method comprises a step of receiving a set of predicted future climate variables, and subsequently a step of combining the climate signification indices and the predicted future climate variables to provide control instructions for release of an amount of thermal energy in the building to satisfy the control criterion. The invention further provides a comfort control system.
Abstract translation: 本发明提供一种控制建筑物中热能释放的方法。 该方法包括以下步骤：确定建筑物的控制标准，定义一组影响建筑物内热能释放的气候变量，并为每个气候变量定义一个气候意义指标，该指标定义该气候变量对于 在建筑物中释放热能。 此外，该方法包括接收一组预测的未来气候变量的步骤，随后将气候意义指数和预测的未来气候变量组合的步骤提供用于释放建筑物中的热能量的控制指令以满足 控制标准。 本发明还提供一种舒适控制系统。
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公开(公告)号：WO2020064368A1
公开(公告)日：2020-04-02
申请号：PCT/EP2019/074500
申请日：2019-09-13
Applicant: DANFOSS A/S
Inventor： PRINS, Jan , LARSEN, Lars Finn Sloth
Abstract: A method for controlling a vapour compression system (1) comprising a compressor unit (2) comprising at least two compressors (3, 12), a heat rejecting heat exchanger (4),a receiver (6), an expansion device (7) and an evaporator (8) arranged in a refrigerant path is disclosed. At least one of the compressors is a main compressor (3) being fluidly connected to an outlet of the evaporator (8) and at least one of the compressors is a receiver compressor (12) being fluidly connected to a gaseous outlet (10) of the receiver (6). A flow of vapour entering the receiver (6), such as a mass flow of vapour entering the receiver (6) is estimated and compared to a first threshold value. In the case that the estimated flow is above the first threshold value, a pressure prevailing inside the receiver (6) is controlled by operating the receiver compressor (12).
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Patent Agency Ranking
公开(公告)号：WO2011072685A1
公开(公告)日：2011-06-23
申请号：PCT/DK2010/000177
申请日：2010-12-16
Applicant: DANFOSS A/S , THYBO, Claus , LARSEN, Lars Finn Sloth , MADER, Gunda
Inventor： THYBO, Claus , LARSEN, Lars Finn Sloth , MADER, Gunda
CPC classification number: F25B41/062 , F25B5/02 , F25B39/028 , F25B41/06 , F25B2341/0661 , F25B2500/18 , F25B2600/2511
Abstract: An expansion device unit (4) for a vapour compression system (1), and a vapour compression system (1) are disclosed. The expansion device unit (4) comprises an inlet opening (17) arranged to receive fluid medium, at least two outlet openings (18) arranged to deliver fluid medium, a main expanding section (6) adapted to expand fluid medium received via the inlet opening (17) before delivering the fluid medium to the outlet openings (18), and a distribution section (7) arranged to split the fluid flow received via the inlet opening (17) into at least two fluid flows to be delivered via the outlet openings (18). The main expanding section (6) and/or the distribution section (7) is/are arranged to cause pressures in fluid delivered via at least two of the outlet openings (18) to be distinct. The main expanding section (6) is operated on the basis of one or more parameters measured in the fluid flow delivered by one of the outlet openings (18). The distinct pressure levels allow distinct evaporating temperature in evaporator paths (5a, 5b, 5c) connected to the outlet openings (18). Thereby a large temperature difference between inlet temperature and outlet temperature of a secondary fluid flow across the evaporator (5) can be obtained, without requiring that the entire mass flow must be compressed from a low pressure level by the compressor (2). Thereby energy is conserved.
Abstract translation: 公开了一种用于蒸汽压缩系统（1）的膨胀装置单元（4）和蒸气压缩系统（1）。 膨胀装置单元（4）包括布置成接收流体介质的入口开口（17），布置成输送流体介质的至少两个出口开口（18），适于膨胀经由入口容纳的流体介质 在将流体介质输送到出口（18）之前的开口（17）和布置成将经由入口开口（17）接收的流体流分离成至少两个流体流的分配部分（7），以经由出口 开口（18）。 主膨胀部分（6）和/或分配部分（7）被布置成使得通过至少两个出口（18）输送的流体中的压力是不同的。 主膨胀部分（6）基于在由一个出口（18）输送的流体流中测量的一个或多个参数来操作。 不同的压力水平允许在连接到出口（18）的蒸发器路径（5a，5b，5c）中具有不同的蒸发温度。 因此，可以获得跨过蒸发器（5）的二次流体流的入口温度和出口温度之间的大的温度差，而不需要通过压缩机（2）将整个质量流量从低压水平压缩。 因此能量是保守的。
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公开(公告)号：WO2011023192A2
公开(公告)日：2011-03-03
申请号：PCT/DK2010/000101
申请日：2010-06-30
Applicant: DANFOSS A/S , THYBO, Claus , LARSEN, Lars Finn Sloth , MADER, Gunda
Inventor： THYBO, Claus , LARSEN, Lars Finn Sloth , MADER, Gunda
CPC classification number: F28F9/0234 , F25B40/00 , F25B2400/054 , F28F2260/02
Abstract: A heat exchanger, such as an evaporator (1) or a condenser (17), for a vapour compression system (15) and a vapour compression system (15) with such a heat exchanger are disclosed. The heat exchanger comprises at least two flow tubes arranged fluidly in parallel, an inlet manifold (3) and an outlet manifold (7). Each flow tube fluidly connects the inlet manifold (3) and the outlet manifold (7), and fluid medium is distributed among the flow tubes by the inlet manifold (3). The outlet manifold (7) is provided with a suction line heat exchanger, preferably being fluidly connected in a refrigerant path of the vapour compression system (15) between a condenser (17) and an expansion device (18), in the case that the heat exchanger is an evaporator (1). The suction line heat exchanger is arranged in the outlet manifold (7) in such a manner that direct thermal contact is provided between the refrigerant delivered from the flow tubes and the suction line heat exchanger, the refrigerant, e.g., being sprayed directly onto the suction line heat exchanger. Refrigerant leaving the evaporator (1) is heated, thereby causing evaporation of possible liquid refrigerant. Thereby liquid refrigerant can be allowed to pass through some of the evaporator tubes (2) without risking damage to the compressor (16). Utilisation of the potential refrigeration capacity of the evaporator (1) is improved. Arranging the suction line heat exchanger in the outlet manifold (7) provides a compact design and eliminates the requirement for additional components.
Abstract translation: 公开了一种用于蒸汽压缩系统（15）的热交换器，诸如蒸发器（1）或冷凝器（17），以及具有这种热交换器的蒸汽压缩系统（15）。 该热交换器包括至少两个平行流体设置的流管，入口歧管（3）和出口歧管（7）。 每个流管将入口歧管（3）和出口歧管（7）流体连接，并且流体介质通过入口歧管（3）分配在流管中。 出口歧管（7）设置有吸入管线热交换器，优选在冷凝器（17）和膨胀装置（18）之间的蒸汽压缩系统（15）的制冷剂路径中流体连接， 换热器是蒸发器（1）。 吸入管线热交换器以这样的方式布置在出口歧管（7）中，使得从流管输送的制冷剂与吸入管线热交换器之间提供直接热接触，制冷剂例如直接喷射到吸入管线 在线换热器。 离开蒸发器（1）的制冷剂被加热，从而导致可能的液体制冷剂的蒸发。 因此液态制冷剂可以被允许穿过一些蒸发器管（2）而不会损坏压缩机（16）。 利用蒸发器（1）的潜在制冷能力得到改善。 在出口歧管（7）中安装吸入管路热交换器提供了紧凑的设计并且消除了对附加部件的需求。
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公开(公告)号：WO2021122444A1
公开(公告)日：2021-06-24
申请号：PCT/EP2020/085951
申请日：2020-12-14
Applicant: DANFOSS A/S
Inventor： LARSEN, Lars Finn Sloth
IPC: F25B5/02 , F25B1/10 , F25B2400/13 , F25B2400/24 , F25B2600/02 , F25B2600/2513 , F25B2700/05
Abstract: A method for controlling a vapour compression system (1) comprising two or more evaporators (5, 12), each evaporator (5, 12) being arranged in thermal contact with a refrigerated volume, the refrigerated volumes storing goods of various types, and each evaporator (5, 12) receiving refrigerant via an expansion device (6, 13) is disclosed. In response to receipt of a load shedding command originating from a power grid (17), the vapour compression system (1) reduces a compressor capacity of the compressor unit. The refrigerated volumes are divided into at least two prioritized categories of refrigerated volumes, where a first category (18) includes refrigerated volumes storing goods of a temperature critical type, and a second category (19) includes refrigerated volumes storing goods of a temperature non-critical type. Refrigerant supply to the evaporator(s) (5, 12) being in thermal contact with the refrigerated volume(s) of the second category (19) is discontinued, and refrigerant supply to the evaporator(s) (5, 12) being in thermal contact with the refrigerated volume(s) of the first category (18) is continued. Thereby the vapour compression system (1) is capable of providing load shedding services for an extended period of time without compromising temperature critical storage.
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公开(公告)号：WO2018202496A1
公开(公告)日：2018-11-08
申请号：PCT/EP2018/060572
申请日：2018-04-25
Applicant: DANFOSS A/S
Inventor： LARSEN, Lars Finn Sloth , PRINS, Jan , GREEN, Torben
Abstract: A method for controlling suction pressure in a vapour compression system (1) comprising one or more cooling entities (5) is disclosed. For each cooling entity (5), a maximum required suction pressure and/or a required change in suction pressure for maintaining a target temperature in the refrigerated volume is obtained. A most loaded cooling entity (5) among the one or more cooling entities (5) is identified, based on the maximum required suction pressures and/or the required changes in suction pressure. The suction pressure of the vapour compression system (1) is controlled in accordance with the maximum required suction pressure and/or required change in suction pressure for the identified most loaded cooling entity (5).
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公开(公告)号：EP4500098A1
公开(公告)日：2025-02-05
申请号：EP23700815.6
申请日：2023-01-13
Applicant: Danfoss A/S
Inventor： KAPICI, Erhan , LARSEN, Lars Finn Sloth , GREEN, Torben
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