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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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2.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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3.发明申请
公开(公告)号：WO2018095787A1
公开(公告)日：2018-05-31
申请号：PCT/EP2017/079360
申请日：2017-11-15
Applicant: DANFOSS A/S
Inventor： FREDSLUND, Kristian , MADSEN, Kenneth Bank , PRINS, Jan , SCHMIDT, Frede
IPC: F25B49/02
Abstract: A method for controlling a vapour compression system (1) is disclosed, the vapour compression system (1) comprising at least one compressor (2, 16), a heat rejecting heat exchanger (3), a high pressure expansion device (4, 15, 17), a receiver (5), an evaporator expansion device (6), an evaporator (7) and a gas bypass valve (8), arranged in a refrigerant path. It is registered that the gas bypass valve (8) is malfunctioning or saturated, and a pressure value for a pressure prevailing inside the receiver (5) is obtained. Finally, the vapour compression system (1) is controlled in order to control a gaseous refrigerant supply to the receiver (5) to adjust the pressure prevailing inside the receiver (5) to reach a target pressure level.
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公开(公告)号：WO2018095785A1
公开(公告)日：2018-05-31
申请号：PCT/EP2017/079358
申请日：2017-11-15
Applicant: DANFOSS A/S
Inventor： SCHMIDT, Frede , PRINS, Jan , FREDSLUND, Kristian , MADSEN, Kenneth Bank
Abstract: A method for controlling a vapour compression system (1) is disclosed. A mass flow of refrigerant along a part of the refrigerant path is estimated, based on measurements performed by one or more pressure sensors (10, 12, 13) for measuring a refrigerant pressure at selected positions along the refrigerant path and one or more temperature sensors (11, 4) for measuring a refrigerant temperature at selected positions along the refrigerant path. A refrigerant pressure or a refrigerant temperature at a selected position a pressure sensor (10, 12, 13) or temperature sensor (11, 14) along the refrigerant path is derived, based on the estimated mass flow. The vapour compression system (1) is allowed to continue operating, even if a sensor (10, 11, 12, 13, 14) is malfunctioning or unreliable.
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公开(公告)号：EP3545241A1
公开(公告)日：2019-10-02
申请号：EP17801674.7
申请日：2017-11-15
Applicant: Danfoss A/S
Inventor： SCHMIDT, Frede , PRINS, Jan , FREDSLUND, Kristian , MADSEN, Kenneth Bank
Abstract: A method for controlling a vapour compression system (1) is disclosed. A mass flow of refrigerant along a part of the refrigerant path is estimated, based on measurements performed by one or more pressure sensors (10, 12, 13) for measuring a refrigerant pressure at selected positions along the refrigerant path and one or more temperature sensors (11, 14) for measuring a refrigerant temperature at selected positions along the refrigerant path. A refrigerant pressure or a refrigerant temperature at a selected position a pressure sensor (10, 12, 13) or temperature sensor (11, 14) along the refrigerant path is derived, based on the estimated mass flow. The vapour compression system (1) is allowed to continue operating, even if a sensor (10, 11, 12, 13, 14) is malfunctioning or unreliable.
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Patent Agency Ranking6.发明公开
公开(公告)号：EP3545243A1
公开(公告)日：2019-10-02
申请号：EP17807760.8
申请日：2017-11-15
Applicant: Danfoss A/S
Inventor： FREDSLUND, Kristian , MADSEN, Kenneth Bank , PRINS, Jan , SCHMIDT, Frede
IPC: F25B49/02
Abstract: A method for controlling a vapour compression system (1) is disclosed, the vapour compression system (1) comprising at least one compressor (2, 16), a heat rejecting heat exchanger (3), a high pressure expansion device (4, 15, 17), a receiver (5), an evaporator expansion device (6), an evaporator (7) and a gas bypass valve (8), arranged in a refrigerant path. It is registered that the gas bypass valve (8) is malfunctioning or saturated, and a pressure value for a pressure prevailing inside the receiver (5) is obtained. Finally, the vapour compression system (1) is controlled in order to control a gaseous refrigerant supply to the receiver (5) to adjust the pressure prevailing inside the receiver (5) to reach a target pressure level.
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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：WO2016034298A1
公开(公告)日：2016-03-10
申请号：PCT/EP2015/064019
申请日：2015-06-23
Applicant: DANFOSS A/S
Inventor： MADSEN, Kenneth Bank , PRINS, Jan , FREDSLUND, Kristian
CPC classification number: F25B41/00 , F25B41/04 , F25B2341/0012 , F25B2341/0013 , F25B2341/0015 , F25B2600/17 , F25B2600/2503 , F25B2700/195 , F25B2700/21163
Abstract: A method for controlling a variable capacity ejector unit (7) arranged in a refrigeration system (1) is disclosed. An ejector control signal for the ejector unit (7) is generated, based on an obtained temperature and an obtained pressure of refrigerant leaving a heat rejecting heat exchanger (3), or on the basis of a high pressure valve control signal for controlling an opening degree of a high pressure valve (6) arranged fluidly in parallel with the ejector unit (7). The ejector control signal indicates whether the capacity of the ejector unit (7) should be increased, decreased or maintained. The capacity of the ejector unit (7) is controlled in accordance with the generated ejector control signal. The power consumption of the refrigeration system (1) is reduced, while the pressure of the refrigerant leaving the heat rejecting heat exchanger (3) is maintained at an acceptable level.
Abstract translation: 公开了一种用于控制布置在制冷系统（1）中的可变容量喷射器单元（7）的方法。 基于获得的温度和获得的离开热排出热交换器（3）的制冷剂的压力，或者基于用于控制开口的高压阀控制信号，产生喷射器单元（7）的喷射器控制信号 与喷射器单元（7）流体平行布置的高压阀（6）的程度。 喷射器控制信号指示喷射器单元（7）的容量是否应当增加，减少或维持。 喷射器单元（7）的容量根据产生的喷射器控制信号进行控制。 制冷系统（1）的功率消耗降低，而离开排热热交换器（3）的制冷剂的压力保持在可接受的水平。
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10.发明申请
公开(公告)号：WO2018095786A1
公开(公告)日：2018-05-31
申请号：PCT/EP2017/079359
申请日：2017-11-15
Applicant: DANFOSS A/S
Inventor： PRINS, Jan , SCHMIDT, Frede , MADSEN, Kenneth Bank , FREDSLUND, Kristian
Abstract: A method for controlling a vapour compression system (1) is disclosed. Malfunctioning of a gas bypass valve (8) is registered. An actual opening degree of the gas bypass valve (8) is derived, and a target opening degree of the gas bypass valve (8) is derived, based on one or more control parameters of the vapour compression system (1). The actual opening degree is compared to the target opening degree, and the vapour compression system (1) is controlled based on the comparison, and in order to match a mass flow of gaseous refrigerant through the gas bypass valve (8) to the actual opening degree of the gas bypass valve (8).
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