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公开(公告)号：US20190242593A1
公开(公告)日：2019-08-08
申请号：US16269918
申请日：2019-02-07
Applicant: GRUNDFOS HOLDING A/S
Inventor： Agisilaos TSOUVALAS , Casper HILLERUP LYHNE
CPC classification number: F24D19/1015 , F24D19/1006 , F24D19/1012 , F24F11/63 , G05B15/02 , G05D23/1931
Abstract: A hydronic system (1) includes a side (3) with a first port (21) connected with a source element output (23), a second port (27) connected with a source element input (29), and a controllable primary side flow actuator (9) for providing a primary side flow (q1). Another side (5) has a third port (31) connected with a load element input (33), a fourth port (35) connected with a load element output (37), and a controllable secondary side flow actuator (13) providing a secondary side flow (q2). A transfer element (17) is connected with the first port, the second port, the third port and the fourth port. A flow control module (39) adapts a transfer element thermal power transfer by controlling the primary side flow actuator and/or the secondary side flow actuator by minimizing a signed deviation value (ΔΔv) that is correlated with the transfer element thermal power transfer.
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公开(公告)号：US20190017512A1
公开(公告)日：2019-01-17
申请号：US16034875
申请日：2018-07-13
Applicant: GRUNDFOS HOLDING A/S
Inventor： Casper HILLERUP LYHNE
CPC classification number: F04D15/0066 , E03B5/00 , F04D1/04 , F04D13/14 , F04D15/029 , G05B15/02 , G06F17/14
Abstract: A multi-pump control system includes a control module, a processing module, a communication interface, and a storage module. The control module runs n different subsets of i pumps of a multi-pump system including N pumps during n different configuration cycles at a speed ωj, wherein N≥2, 2≤n≤2N−1 and 1≤i≤N. Each configuration cycle j∈{1, . . . , n} is associated with a subset j∈{1, . . . , n} and a speed ωj. The communication interface receives signals indicative of operational parameters from each subset j during the associated configuration cycle j. The processing module determines an approximated pump characteristic Δp=f(q, ωj) based on the received signals for each subset j and under an assumption that the i pumps of each subset j share the same part q/i of a reference flow q. The storage module stores the approximated pump characteristic Δp=f(q, ωj) or parameters indicative thereof.
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公开(公告)号：US20190017513A1
公开(公告)日：2019-01-17
申请号：US16034923
申请日：2018-07-13
Applicant: GRUNDFOS HOLDING A/S
Inventor： Casper HILLERUP LYHNE
Abstract: A multi-pump control system includes a control module, a processing module, a communication interface, and a storage module. The control module is configured to run a zero flow configuration cycle by either ramping up the speed of at least one pump in addition to a subset j of i pumps of a multi-pump system until the communication interface receives a signal change indicative of the at least one pump starting to contribute to the total flow, wherein the processing module is configured to determine an approximated pump characteristic or power consumption or ramping down the speed of at least one pump of a subset j of i pumps of a multi-pump system until the communication interface receives a signal change indicative of the at least one pump stopping to contribute to the total flow, wherein the processing module is configured to determine an approximated pump characteristic and/or power consumption.
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公开(公告)号：US20190017511A1
公开(公告)日：2019-01-17
申请号：US16034820
申请日：2018-07-13
Applicant: GRUNDFOS HOLDING A/S
Inventor： Casper HILLERUP LYHNE
Abstract: A multi-pump control system includes a processing module, a communication interface, a storage module and a control module configured to ramp up a speed of k pumps in addition to a subset j of i pumps of a system comprising N pumps running at a speed ωj providing a total head Δp, wherein N≥2, 1≤k
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