公开(公告)号：EP3587963A1

公开(公告)日：2020-01-01

申请号：EP18179422.3

申请日：2018-06-22

Applicant: Danfoss A/S

Inventor： IZADI-ZAMANABADI, Roozbeh ,  THOMSEN, Carsten Mølhede ,  PRINS, Jan

IPC: F25B49/02 ,  F25B47/00 ,  F25B47/02

Abstract: A method for detecting ice accumulation on an evaporator (104) of a vapour compression system (100) is disclosed. The evaporator (104) is part of a vapour compression system (100). The vapour compression system (100) further comprises a compressor unit (101), a heat rejecting heat exchanger (102), and an expansion device (103). The compressor unit (101), the heat rejecting heat exchanger (102), the expansion device (103) and the evaporator (104) are arranged in a refrigerant path, and an air flow is flowing across the evaporator (104). At least one temperature of air leaving the evaporator (104) is measured and a control value based on the measured temperature is derived. Determining whether ice has accumulated on the evaporator (104) by comparing the derived control value and a setpoint value.

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

IPC: F25B49/02 ,  F25B41/00

公开(公告)号：EP3365619B1

公开(公告)日：2019-08-21

申请号：EP16781479.7

申请日：2016-10-14

Applicant: Danfoss A/S

Inventor： PRINS, Jan ,  SCHMIDT, Frede ,  MADSEN, Kenneth, Bank ,  FREDSLUND, Kristian

IPC: F25B49/02 ,  F25B41/00 ,  F25B1/08 ,  F25B9/08

公开(公告)号：EP3303944A1

公开(公告)日：2018-04-11

申请号：EP16725122.2

申请日：2016-05-25

Applicant: Danfoss A/S

Inventor： SCHMIDT, Frede ,  FREDSLUND, Kristian ,  PRINS, Jan

IPC: F25B29/00 ,  F25B49/02 ,  F25B40/04 ,  F25B1/10

CPC classification number: F25B29/003 ,  F25B1/10 ,  F25B40/04 ,  F25B49/022 ,  F25B2400/075 ,  F25B2400/13 ,  F25B2400/23 ,  Y02B30/52

Abstract: A method for operating a vapour compression system (1) comprising a heat recovery heat exchanger (4) is disclosed. The heat recovery system requests a required level of recovered heat to be provided by the heat recovery heat exchanger (4) to the heat recovery system, generates a signal indicating the required level of recovered heat, and supplies the generated signal to a control unit of the vapour compression system (1). A setpoint value for at least one control parameter of the vapour compression system (1) is calculated, based on the generated signal, and the vapour compression system (1) is operated in accordance with the calculated setpoint value(s).

公开(公告)号：EP3049674B1

公开(公告)日：2017-08-02

申请号：EP14703091.0

申请日：2014-02-07

Applicant: Danfoss A/S

Inventor： PRINS, Jan

IPC: F04B39/08 ,  F04B49/03 ,  F04B49/02

CPC classification number: F04B49/03 ,  F04B27/005 ,  F04B39/08 ,  F04B49/02

公开(公告)号：EP3168551A1

公开(公告)日：2017-05-17

申请号：EP16203733.7

申请日：2012-10-05

Applicant: Danfoss A/S

Inventor： PRINS, Jan

IPC: F25B49/02 ,  F25B1/10 ,  F25B7/00 ,  F04B41/06

CPC classification number: F04B41/06 ,  F25B1/10 ,  F25B7/00 ,  F25B49/022

Abstract: A method for coordinating operation between at least two groups of compressors in a cooling circuit is disclosed. A first group of compressors forms part of a low temperature (LT) part of the cooling circuit and a second group of compressors forms part of a high temperature (MT) part of the cooling circuit. Each of the compressor groups comprises one or more compressors, and each of the compressor groups comprises a controller, the controllers being capable of exchanging signals.
In the case that the LT compressor group needs one or more of the LT compressors to start operation, it is investigated whether or not one or more of the MT compressors is/are operating. If this is the case, one or more of the LT compressors is/are allowed to start operation. If it is not the case, the suction pressure in the MT part of the cooling circuit is established, e.g. measured, and compared to a lower and an upper limit of a neutral pressure zone, said neutral pressure zone lying within an operating pressure zone of the MT part of the cooling circuit. Finally, the MT compressors and the LT compressors are operated based on the comparing step.
The cooling system may be a cascade system or a booster system.

Abstract translation: 公开了一种用于协调冷却回路中的至少两组压缩机之间的操作的方法。 第一组压缩机形成冷却回路的低温（LT）部分的一部分，而第二组压缩机形成冷却回路的高温（MT）部分的一部分。 每个压缩机组包括一个或多个压缩机，并且每个压缩机组包括控制器，控制器能够交换信号。 在LT压缩机组需要一台或多台LT压缩机开始运行的情况下，调查一台或多台MT压缩机是否正在运行。 如果是这种情况，则允许一台或多台LT压缩机开始运行。 如果不是这种情况，则建立冷却回路的MT部分中的吸入压力，例如， 测量并与中性压力区的下限和上限进行比较，所述中性压力区位于冷却回路的MT部分的操作压力区内。 最后，基于比较步骤操作MT压缩机和LT压缩机。 冷却系统可以是级联系统或增压系统。

公开(公告)号：EP3049674A1

公开(公告)日：2016-08-03

申请号：EP14703091.0

申请日：2014-02-07

Applicant: Danfoss A/S

Inventor： PRINS, Jan

IPC: F04B39/08 ,  F04B49/03 ,  F04B49/02

CPC classification number: F04B49/03 ,  F04B27/005 ,  F04B39/08 ,  F04B49/02

Abstract: A method of operating a reciprocating compressor for a vapour compression system is disclosed. The reciprocating compressor comprises at least two cylinders and at least two unloaders, each unloader can be operated in an idle mode or in an active mode and therefore the reciprocating compressor can run in more than two capacity states. The capacity states alternates periodically between states in such a way that a substantially continuous range of effective capacities can be obtained while the individual cylinders are evenly loaded.

Abstract translation: 公开了一种用于控制用于蒸气压缩系统的往复式压缩机的方法。 往复式压缩机包括至少两个气缸和至少两个卸载器，每个卸载器可以在空转模式或活动模式下操作，因此往复式压缩机可以以两个以上的容量状态运行。 容量状态在状态之间周期性地交替，使得在各个气缸均匀加载的同时可以获得基本连续的有效容量范围