公开(公告)号：US09587640B2

公开(公告)日：2017-03-07

申请号：US13408823

申请日：2012-02-29

Applicant: Tero Ahonen ,  Jero Ahola ,  Jussi Tamminen

Inventor： Tero Ahonen ,  Jero Ahola ,  Jussi Tamminen

IPC: F04D15/00 ,  G01F25/00 ,  G01F1/80

CPC classification number: F04D15/0088 ,  G01F1/80 ,  G01F25/003

Abstract: An exemplary method for determining a flow rate of a pump, includes measuring and storing the flow rate (QMean) when the pump is in operation, storing rotational speed (nMean) and torque (TMean) of the pump during measurement of the flow rate (QMean), determining torque (TManufacturer) corresponding to the measured flow rate (QMean), calculating a bias value of the torque (TBias) by comparing the torque determined from the characteristic curve (TManufacturer) and the stored torque (TMean) of the pump, and determining an operating point of the pump based on the bias value of the torque (TBias).

Abstract translation: 用于确定泵的流量的示例性方法包括在泵运行时测量和存储流量（QMean），在流量测量期间存储泵的转速（nMean）和扭矩（TMean） 通过比较从特性曲线（TManufacturer）确定的扭矩和泵的存储扭矩（TMean）来计算与所测量的流量（QMean）相对应的扭矩（TManufacturer），计算扭矩偏差值（TBias） ，并且基于扭矩的偏置值（TBias）来确定泵的工作点。

公开(公告)号：US09181954B2

公开(公告)日：2015-11-10

申请号：US13024705

申请日：2011-02-10

Applicant: Tero Ahonen ,  Jussi Tamminen ,  Jero Ahola

Inventor： Tero Ahonen ,  Jussi Tamminen ,  Jero Ahola

IPC: F04D15/00 ,  F04D27/00

CPC classification number: F04D15/0088 ,  F04D27/001

Abstract: An exemplary frequency converter and method are directed to estimating an operation point of a pump when the QH characteristic curve of the pump is known. The frequency converter controls the pump, and a process curve is estimated when a first operation point of the pump is in the nominal range. The process curve defines a head as a function of volumetric flow. A rotational speed of the pump is determined and a QH characteristic curve of the pump is converted to a current rotational speed of the pump based on affinity laws. A second operation point of the pump is estimated by determining an intersection point of the converted QH characteristic curve and the estimated process curve.

Abstract translation: 示例性的变频器和方法涉及当泵的QH特性曲线已知时估计泵的操作点。 变频器控制泵，并且当泵的第一操作点在标称范围内时估计过程曲线。 过程曲线将头部定义为体积流量的函数。 确定泵的旋转速度，并且基于亲和度法将泵的QH特性曲线转换为泵的当前转速。 通过确定转换的QH特性曲线和估计的过程曲线的交点来估计泵的第二操作点。

公开(公告)号：US09027398B2

公开(公告)日：2015-05-12

申请号：US13431443

申请日：2012-03-27

Applicant: Tero Ahonen ,  Jussi Tamminen ,  Jero Ahola

Inventor： Tero Ahonen ,  Jussi Tamminen ,  Jero Ahola

IPC: F04D15/02

CPC classification number: F04D15/0272

Abstract: A method and an arrangement for detecting wear of a pump are disclosed, which pump is controlled with a frequency converter providing rotational speed and torque estimates, characteristic curves of the pump being known. An exemplary method includes obtaining a value representing the operating point of the pump by measuring the flow (Qact) or the head (Hact) produced by the pump; estimating the operating point of the pump by using a calculation based on the characteristic curves of the pump, the estimated rotational speed (nest) of the pump, and the estimated torque (Test) of the pump; calculating an estimation error from the value representing the operating point and from the estimated operating point; repeating the above steps during the use of the pump; and detecting the wear of the pump from the amplitude of the estimation error.

Abstract translation: 公开了一种用于检测泵的磨损的方法和装置，该泵由提供转速和扭矩估计的变频器控制，泵的特性曲线是已知的。 示例性方法包括通过测量由泵产生的流量（Qact）或头（Hact）来获得表示泵的工作点的值; 通过使用基于泵的特性曲线，泵的估计转速（嵌套）和泵的估计转矩（Test）的计算来估计泵的工作点; 从代表操作点的值和估计的工作点计算估计误差; 在使用泵期间重复上述步骤; 并从估计误差的幅度检测泵的磨损。

公开(公告)号：US20120247200A1

公开(公告)日：2012-10-04

申请号：US13431443

申请日：2012-03-27

Applicant: Tero Ahonen ,  Jussi Tamminen ,  Jero Ahola

Inventor： Tero Ahonen ,  Jussi Tamminen ,  Jero Ahola

IPC: G01N3/56

CPC classification number: F04D15/0272

Abstract: A method and an arrangement for detecting wear of a pump are disclosed, which pump is controlled with a frequency converter providing rotational speed and torque estimates, characteristic curves of the pump being known. An exemplary method includes obtaining a value representing the operating point of the pump by measuring the flow (Qact) or the head (Hact) produced by the pump; estimating the operating point of the pump by using a calculation based on the characteristic curves of the pump, the estimated rotational speed (nest) of the pump, and the estimated torque (Test) of the pump; calculating an estimation error from the value representing the operating point and from the estimated operating point; repeating the above steps during the use of the pump; and detecting the wear of the pump from the amplitude of the estimation error.

Abstract translation: 公开了一种用于检测泵的磨损的方法和装置，该泵由提供转速和扭矩估计的变频器控制，泵的特性曲线是已知的。 示例性方法包括通过测量由泵产生的流量（Qact）或头（Hact）来获得表示泵的工作点的值; 通过使用基于泵的特性曲线，泵的估计转速（嵌套）和泵的估计转矩（Test）的计算来估计泵的工作点; 从代表操作点的值和估计的工作点计算估计误差; 在使用泵期间重复上述步骤; 并从估计误差的幅度检测泵的磨损。

公开(公告)号：US09021876B2

公开(公告)日：2015-05-05

申请号：US13590708

申请日：2012-08-21

Applicant: Jussi Tamminen ,  Tero Ahonen ,  Jero Ahola ,  Markku Niemelä

Inventor： Jussi Tamminen ,  Tero Ahonen ,  Jero Ahola ,  Markku Niemelä

IPC: F04D27/00 ,  F04D25/06 ,  F04D25/08 ,  H02P23/14 ,  F04D29/70 ,  H02P21/14

CPC classification number: F04D27/001 ,  F04D25/06 ,  F04D25/08 ,  F04D29/703 ,  H02P21/143 ,  H02P23/14

Abstract: A method for determining a change in a mass of a fan impeller. The method includes inducing a torque to the fan impeller and determining a change in the angular speed of the fan impeller, induced by the torque. A value for a first parameter representing a present mass of the fan impeller is determined on the basis of the change in the angular speed and the torque. The change in the mass is then determined on the basis of the first parameter and a second parameter representing the reference mass of the fan impeller.

Abstract translation: 一种用于确定风扇叶轮的质量变化的方法。 该方法包括向风扇叶轮诱导扭矩并确定由扭矩引起的风扇叶轮的角速度的变化。 基于角速度和转矩的变化来确定表示风扇叶轮的当前质量的第一参数的值。 然后基于第一参数和表示风扇叶轮的参考质量的第二参数来确定质量的变化。

公开(公告)号：US20130129481A1

公开(公告)日：2013-05-23

申请号：US13529604

申请日：2012-06-21

Applicant: Jussi TAMMINEN ,  Tero AHONEN ,  Jero AHOLA ,  Markku NIEMELÄ

Inventor： Jussi TAMMINEN ,  Tero AHONEN ,  Jero AHOLA ,  Markku NIEMELÄ

IPC: G01P15/14 ,  G06F19/00 ,  F01D1/06

CPC classification number: F04D15/0088 ,  F04D27/001

Abstract: A method is disclosed for detecting the correct rotational direction of a centrifugal apparatus. The method can include detecting the correct rotational direction of the centrifugal apparatus based on an acceleration test and/or a deceleration test. The detecting of correct rotational direction of the centrifugal apparatus can include comparing an acceleration time (t1,acc) for a first direction with an acceleration time (t2,acc) for a second direction, whereby shorter acceleration time can be interpreted as an indication of correct rotational direction; and/or comparing a deceleration time (t1,dec) of the first direction with a deceleration time (t2,dec) of the second direction, whereby longer deceleration time can be interpreted as an indication of correct rotational direction.

Abstract translation: 公开了一种用于检测离心装置的正确旋转方向的方法。 该方法可以包括基于加速度试验和/或减速试验来检测离心装置的正确旋转方向。 离心装置的正确旋转方向的检测可以包括将第一方向的加速时间（t1，acc）与第二方向的加速时间（t2，acc）进行比较，由此较短的加速时间可以解释为 正确的旋转方向; 和/或将第一方向的减速时间（t1，dec）与第二方向的减速时间（t2，dec）进行比较，从而可以将较长的减速时间解释为正确旋转方向的指示。

公开(公告)号：US09416787B2

公开(公告)日：2016-08-16

申请号：US13433743

申请日：2012-03-29

Applicant: Jussi Tamminen ,  Tero Ahonen ,  Jero Ahola

Inventor： Jussi Tamminen ,  Tero Ahonen ,  Jero Ahola

IPC: F04D27/00 ,  F04D15/00

CPC classification number: F04D15/0088 ,  F04D27/001

Abstract: A method and arrangement for determining the flow rate (Q) produced by a pump, when the pump is controlled with a frequency converter, which produces estimates for rotational speed and torque of the pump, and the characteristic curves of the pump are known. The method includes determining the shape of a QH curve of the pump, dividing the QH curve into two or more regions depending on the shape of the QH curve, determining on which region of the QH curve the pump is operating, and determining the flow rate (Q) of the pump using the determined operating region of the characteristic curve.

Abstract translation: 当用变频器控制泵来确定由泵产生的流量（Q）的方法和装置，其产生泵的转速和扭矩的估计值，以及泵的特性曲线是已知的。 该方法包括确定泵的QH曲线的形状，根据QH曲线的形状将QH曲线分为两个或更多个区域，确定泵在哪个区域运行，并确定流量 （Q），使用所确定的特征曲线的工作区域。

公开(公告)号：US20130047724A1

公开(公告)日：2013-02-28

申请号：US13590708

申请日：2012-08-21

Applicant: Jussi TAMMINEN ,  Tero Ahonen ,  Jero Ahola ,  Markku Niemelä

Inventor： Jussi TAMMINEN ,  Tero Ahonen ,  Jero Ahola ,  Markku Niemelä

IPC: G01P3/12

CPC classification number: F04D27/001 ,  F04D25/06 ,  F04D25/08 ,  F04D29/703 ,  H02P21/143 ,  H02P23/14

Abstract: A method for determining a change in a mass of a fan impeller. The method includes inducing a torque to the fan impeller and determining a change in the angular speed of the fan impeller, induced by the torque. A value for a first parameter representing a present mass of the fan impeller is determined on the basis of the change in the angular speed and the torque. The change in the mass is then determined on the basis of the first parameter and a second parameter representing the reference mass of the fan impeller.

Abstract translation: 一种用于确定风扇叶轮的质量变化的方法。 该方法包括向风扇叶轮诱导扭矩并确定由扭矩引起的风扇叶轮的角速度的变化。 基于角速度和转矩的变化来确定表示风扇叶轮的当前质量的第一参数的值。 然后基于第一参数和表示风扇叶轮的参考质量的第二参数来确定质量的变化。

公开(公告)号：US09347452B2

公开(公告)日：2016-05-24

申请号：US13434243

申请日：2012-03-29

Applicant: Jussi Tamminen ,  Tero Ahonen ,  Jero Ahola

Inventor： Jussi Tamminen ,  Tero Ahonen ,  Jero Ahola

IPC: F04D27/00 ,  F04D19/02

CPC classification number: F04D27/001 ,  F04D19/02 ,  F05D2270/304 ,  F05D2270/335

Abstract: Exemplary methods and systems of determining stall of a fan are disclosed, when the fan is controlled with a frequency converter. The method includes estimating a rotational speed (n) and the torque (T) of the fan. Transferring characteristic curves of the fan to the estimated rotational speed (n) of the fan, determining the stall region of the fan. Determining an operation point of the fan from the estimated rotational speed (n) and estimated torque (T) using the characteristic curves. Calculating RMS values of the low frequency components of the torque and rotational speed estimates (TRMS, nRMS) to obtain a low frequency parameter (S), and determining an occurrence of stall based on at least one of the operation point and the low frequency parameter (S).

Abstract translation: 当风扇由变频器控制时，公开了确定风扇失速的示例性方法和系统。 该方法包括估计风扇的转速（n）和转矩（T）。 将风扇的特性曲线传递到风扇的估计转速（n），确定风扇的失速区域。 使用特性曲线从估计转速（n）和估计转矩（T）确定风扇的操作点。 计算扭矩和转速估计（TRMS，nRMS）的低频分量的RMS值以获得低频参数（S），以及基于操作点和低频参数中的至少一个来确定失速的发生 （S）。

公开(公告)号：US20120253700A1

公开(公告)日：2012-10-04

申请号：US13434243

申请日：2012-03-29

Applicant: Jussi TAMMINEN ,  Tero Ahonen ,  Jero Ahola

Inventor： Jussi TAMMINEN ,  Tero Ahonen ,  Jero Ahola

IPC: G01L5/26 ,  G01L3/00

CPC classification number: F04D27/001 ,  F04D19/02 ,  F05D2270/304 ,  F05D2270/335

Abstract: Exemplary methods and systems of determining stall of a fan are disclosed, when the fan is controlled with a frequency converter. The method includes estimating a rotational speed (n) and the torque (T) of the fan. Transferring characteristic curves of the fan to the estimated rotational speed (n) of the fan, determining the stall region of the fan. Determining an operation point of the fan from the estimated rotational speed (n) and estimated torque (T) using the characteristic curves. Calculating RMS values of the low frequency components of the torque and rotational speed estimates (TRMS, nRMS) to obtain a low frequency parameter (S), and determining an occurrence of stall based on at least one of the operation point and the low frequency parameter (S).

Abstract translation: 当风扇由变频器控制时，公开了确定风扇失速的示例性方法和系统。 该方法包括估计风扇的转速（n）和转矩（T）。 将风扇的特性曲线传递到风扇的估计转速（n），确定风扇的失速区域。 使用特性曲线从估计转速（n）和估计转矩（T）确定风扇的操作点。 计算转矩和转速估计（TRMS，nRMS）的低频分量的RMS值以获得低频参数（S），以及基于操作点和低频参数中的至少一个来确定失速的发生 （S）。