公开(公告)号：WO2018192827A1

公开(公告)日：2018-10-25

申请号：PCT/EP2018/059330

申请日：2018-04-11

Applicant: DANFOSS A/S

Inventor： LUCKMANN, Ejnar ,  JENSEN, Lars

IPC: H04L12/28 ,  H04L29/08 ,  G05B19/418

Abstract: A control system (1) for controlling a cooling system comprising two or more cooling entities (2) is disclosed. The control system comprises a central control unit (3), two or more entity controllers (4), each entity controller (4) being associated with one of the cooling entities (2), and each entity controller (4) being provided with a nearfield communication interface (6) allowing communication between the entity controller (4) and a portable device (7), via a nearfield communication channel, and a secured communication network (5) connecting the central control unit (3) with each of the entity controllers (4). The central control unit (3) is configured to generate blocking signals and/or unblocking signals and communicate the blocking signals and/or unblocking signals to each of the entity controllers (4), via the secured communication network (5). Each of the entity controllers (4) is configured to block and/or unblock the nearfield communication interface (6), in accordance with received blocking signals and/or unblocking signals.

公开(公告)号：EP3613180A1

公开(公告)日：2020-02-26

申请号：EP18717051.9

申请日：2018-04-11

Applicant: Danfoss A/S

Inventor： LUCKMANN, Ejnar ,  JENSEN, Lars

IPC: H04L12/28 ,  H04L29/08 ,  G05B19/418

公开(公告)号：EP4227603A1

公开(公告)日：2023-08-16

申请号：EP22156342.2

申请日：2022-02-11

Applicant: Danfoss A/S

Inventor： LARSEN, Lars Finn Sloth ,  LUCKMANN, Ejnar ,  MOOS, Hans

IPC: F25B5/02 ,  F25B49/00 ,  F25D29/00 ,  F25B49/02

Abstract: A method for operating a vapour compression system (1) is disclosed. A cut-in temperature, a high temperature alarm limit and a high temperature alarm delay time are set. A maximum acceptable relative decay value is derived, based on the high temperature alarm limit and the high temperature alarm delay time. The vapour compression system (1) is operated while monitoring a temperature inside a refrigerated volume and continuously deriving a weighted mean temperature prevailing inside the refrigerated volume, during a moving time window of a predefined length. In the case that the weighted mean temperature inside the refrigerated volume exceeds the cut-in temperature, a timer is started, and a delay time is derived, based on the weighted mean temperature and the maximum acceptable relative decay value. A warning is generated when the timer reaches the derived delay time.