CN105121857A - Centrifugal pump assembly - Google Patents
Centrifugal pump assembly Download PDFInfo
- Publication number
- CN105121857A CN105121857A CN201480013981.1A CN201480013981A CN105121857A CN 105121857 A CN105121857 A CN 105121857A CN 201480013981 A CN201480013981 A CN 201480013981A CN 105121857 A CN105121857 A CN 105121857A
- Authority
- CN
- China
- Prior art keywords
- centrifugal pump
- regulator
- pump group
- motor
- adjustment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a centrifugal pump assembly, in particular a heating circulation pump assembly, having a centrifugal pump (1), having an electrical motor (7) driving the pump (1), having an electronic speed controller (11) for the motor (7) and having an internal, electronic control (16), wherein the manipulated variable is the velocity of the motor, wherein the speed controller (11) and the control (16) form part of the assembly, wherein there is a signal input for external activation of the motor (7) and there are means (20) for changing over from the internal, electronic control (16) to an external velocity control or for connecting an external velocity control.
Description
Technical field
The present invention relates to a kind of centrifugal pump group, particularly a kind of heating cycle pump assembly, it has feature as described in the preamble as claimed in claim 1.
Background technique
This centrifugal pump group generally includes centrifugal pump and drives this centrifugal pump motor, electronic speed regulator (such as the frequency variator of motor) and internal electron regulator, controling parameters in this regulator is the rotating speed of motor, at this, speed regulator and regulator form a part for unit, and are typically provided the terminal box or electronic device box that are arranged in pump case and electric machine casing side.The regulating parameter of this regulator is such as the pressure reduction between the input end of pump and output terminal, volume flowrate or the parameter derived thus.
In the modern heat circulation pump of aforementioned type, according to prior art, internal electron regulator provide not only many alternative adjustment curves, such as constant pressure curve, ratio pressure curve etc., and employ the internal microprocessor with corresponding software in the unit, this microprocessor can according to the actual conditions in heating equipment, the temperature variation of the pressure change, fed sheet of a media, conveying stream etc. that have particularly occurred, make the rating value parameter of regulator automatically and heating equipment match.The advantage that this self study ground of internal regulator carries out rating value adjustment is: can adjust pump in the mode of near ideal according to the requirement of heating equipment, and therefore can run with relative less electric energy matchingly with situation.
Be the heating cycle pump assembly being subject to Frequency Converter Control being regarded as prior art on the other hand, in these heating cycle pump assemblys, be provided with the peripheral control unit for control pump rotating speed.This peripheral control unit belongs to a part for heating equipment central control unit usually.The interface controlled for rotating speed is the control input end be positioned on pump, and for transmitting pulse-width signal, at this, pulsewidth determines effective voltage or frequency and determines the rotating speed of pump thus.Such pump such as can be seen in gas water-heater, such as in apartment as the gas water-heater of compact type heating equipment, but they also can be used in small-sized house.
Thereby establish different pump series, a side is the heat circulation pump of this self study, and they are by in-site installation in heating equipment, and the opposing party is the heat circulation pump being subject to external control, and they are arranged in water heater by manufacturer usually.
Because hydraulic demand is in both cases identical often, therefore centrifugal pump group is in fact as broad as long with regard to its mechanical structure.But manufacturer needs production two structural series all the time for identical pump case connection data.Based on the reason of spare part, also must be always the different centrifugal pump group of each aforesaid store, this makes cost very high and costly.
For the larger heat circulation pump of structure (being such as one group with two to eight pumps parallelly to install), according to prior art (model is the Grundfos pump of MagnaUPE), that the single heat circulation pump having internal electron regulator separately to these from outside is implemented to control, at this, not that internal regulator itself is exerted one's influence, and be only preset rating value.
Summary of the invention
In this context, the object of the present invention is to provide a kind of such centrifugal pump group, this centrifugal pump group not can be used only in the heating equipment by internal electron conditioner operation, but also can be used in and have in heating water's device of peripheral control unit, or also can use in combination.
Object of the present invention is realized by a kind of centrifugal pump group with feature described in claim 1.Of the present inventionly preferred embodiment to be provided by dependent claims, explanation below and accompanying drawing.At this according to the present invention, the feature provided in dependent claims, specification and accompanying drawing both can use individually, also can do further design by suitable combination to technological scheme as claimed in claim 1 according to the present invention.
Have by the centrifugal pump of motoring according to centrifugal pump group of the present invention, particularly heating cycle pump assembly.This unit also has for the electronic speed regulator of motor and take motor speed as the internal electron regulator of controling parameters, and at this, speed regulator and regulator form a part for unit.The signal input part for implementing external control to motor is provided with according to the present invention, and for being switched to outside rotational speed governor or the device for connecting outside rotational speed governor from internal electron regulator.
Therefore, basic thought of the present invention is that the aforementioned pump type according to prior art is known is integrated in one, and have also been devised the combination about controller/regulator in addition, the combination under this form can't realize at present.Its internal electron regulator can be advantageously utilized to carry out work according to centrifugal pump group of the present invention, outside rotational speed governor can also be utilized to carry out work, and use internal electron regulator and outside rotational speed governor to work in combination, such as, unit utilizes internal regulator to carry out work, and is only controlled by outside rotational speed governor when connecting.That is, only with a pattern or another mode operation, but can need not combine by favourable mode.
Signal input part particularly preferably on centrifugal pump group is made up of the Electric plug with shutter be arranged on machine unit shell.In the present invention, attachment plug both can be male type male component, also can be female male component.Being installed in heating water's device current and utilize pulse-width signal to control in the heat circulation pump of rotating speed, this signal input part is regarded as prior art.According to the present invention, this signal input part can also other form be formed, and such as, when signal is by being be made up of electrofilter during power cable modulation transmissions, or is made up of the receiver of infrared rays, bluetooth or other types when signal is transferred wirelessly.
At this, device for internal electron regulator being switched to outside rotational speed governor or being used for connecting outside rotational speed governor can be designed as, this device can advantageously be determined automatically, whether peripheral control unit in connection, and determining to be switched to peripheral control unit as requested enduringly or where necessary when connecting peripheral control unit.Therefore, such as can by suitable electronic circuit according to determining at a certain time interval, whether signal input part is connected with peripheral control unit.Because peripheral control unit is also electronically work usually, therefore this can be determined by corresponding " shaking hands " (" handshaking ") or suitable proof cycle.
According to the present invention, can also realize simple switching by means of the switch on pump assembly, this switch is such as made up of the contact of the Electric plug with shutter inside for signal input part, and this contact is closed when inserting pairing plug; Be made up of the microswitch in this region; Be made up of Hall transducer etc.Such switch is particularly suitable for realizing from internal electron regulator to the switching of outside rotational speed governor, that is, identical pump assembly such as should be used to substitute by the centrifugal pump group from external control rotating speed in heating water's device, or substitute the heat circulation pump by the work of internal electron regulator in heating equipment.
Preferred centrifugal pump group has regulator, and this regulator can realize the rating value adjustment of self study, and it automatically adjusts the operation point of pump according to the requirement of equipment.Advantageously, the adjustment of the rating value of this self study not only can be used in heating equipment as independently technological scheme when installation pump, but also can be applied to as required in heating water's device, is arrange outside rotational speed governor at this.Preferably this outside rotational speed governor is only designed to connection in the following cases, that is: the runnability preset, such as, need to distribute more heat rapidly; Or can only by boiler controller identification in emergency circumstances.That is, even if centrifugal pump group according to the present invention also can utilize internal regulator to be realized motor by the rating value adjustment of self study in a particularly advantageous manner external control when having signal input part, at this, only in emergency circumstances send by peripheral control unit the tach signal being in precedence special.
At this, preferably centrifugal pump group according to the present invention is designed to, not only can realizes rotating speed by peripheral control unit and control, but also can realize by peripheral control unit activation that the rating value of self study is adjusted and make its inactivation.In this way, can make self study rating value adjustment in this internal control electronic device that is favourable, that be configured in centrifugal pump group also by targetedly in heating equipment, these heating equipments only send the tach signal for centrifugal pump group by the controller of himself usually.Obviously, correspondingly must design peripheral control unit in this case.
Also be provided with external switch device in addition, the self study rating value adjustment in internal regulator can be made to reset and/or select or change one or more adjustment curves of internal regulator by these switch gears.Namely, centrifugal pump group is controlled technically to be adjusted to, it not only adjusts as rating value that is known according to prior art, that have self study and provides the heating cycle pump assembly of a large amount of adjustment curve, only manually intervene and just can be controlled on the Panel of pump assembly from outside, and now can also by external switch device, namely controlled from outside by electricity/electronic signal.That is, according to this expansion scheme, the replacement (Reset) of the controller to self study can be realized by corresponding (such as the electronic controller of heating water's device) external command, also can realize external control by this controller.In order to all main control that can obtain centrifugal pump group by peripheral control unit and regulatory function, be particularly advantageously obtain the adjustment curve be arranged in internal regulator.
Preferably particularly be provided with external switch at this, the rating value adjustment of the internal control electronic device of centrifugal pump group can be made by this switch to reset and/or change one or more adjustment curves of internal regulator.This switch is turned up the soil with pump assembly space interval and is arranged, and is at least connected with pump assembly signal, is preferably wire and connects.Preferably this switch can be arranged in the Panel of heating equipment, in this heating equipment, be provided with centrifugal pump group.
In order to particularly aforesaid control possibility can be utilized, being designed in the preferred expansion scheme of one according to the present invention, also can transmitting other control signal preferably by modulating for the electric lead transmitting speed controling signal (typically pwm signal (pulse-width signal)).Then arrange segregating unit in pump assembly side, speed controling signal is separated with other control signal and correspondingly continues to process speed controling signal by it.
Preferably centrifugal pump group according to the present invention is designed for the supply to many heat supplying loop system, as it usually for the situation in the heat circulation pump of water heater, be provided with in this many heat supplying loop system for the heat supplying loop of indoor heating and the heat supplying loop for nonpotable water heating.For this application purpose, preferred centrifugal pump group has the device for identifying heat supplying loop to be recycled, can advantageously automatically identify: which needs in these heat supplying loop are controlled and correspondingly change (umzusteuern).This identification such as can be undertaken by the change of pressure on pump, if that is, from a heat supplying loop to during the transfer process of another heat supplying loop, these two heat supplying loop are all opened at short notice and can pressure drop be detected thus.
In a kind of expansion scheme according to the present invention, preferably in centrifugal pump group, multiple profile/adjustment curve (Profile/Regelkurven) is stored in internal regulator, these profile/adjustment curves can by controlling with being positioned at switch manual outside unit, or realize wireless control by remote controller, smart mobile phone etc. as required, or can be selected by the control gear being generally arranged on boiler implosion side.
Accompanying drawing explanation
Referring to embodiment, the present invention is elaborated.At this:
Fig. 1 shows the exploded view of heating cycle pump assembly, and
Fig. 2 shows the block diagram of unit as shown in Figure 1.
Embodiment
Pump assembly as shown in Figure 1 not only can be arranged in heating equipment as independent unit, but also can as being subject to the units' installation of rotating speed control in heating water's device, at this, this rotating speed controls to be utilize the controller of water heater self to realize, and that is carries out from outside.
This unit comprises centrifugal pump 1, and the pump case 2 of this centrifugal pump is such as constructed to embedded housing at this
and there is inhalation interface 3 and pressure interface 4.It should be noted that, also can adopt other suitable housing forms various at this in principle.Impeller 5 is arranged on the inside of pump case 2 rotationally, and this impeller is installed on the axle 6 that driven by motor 7, and this motor is arranged in electric machine casing 8, and this electric machine casing is connected with pump case 2 screw.
Be provided with terminal box 9 in the side of the pump case dorsad 2 of electric machine casing 8, this terminal box and motor field frame 8 overlap, and are configured for the electronics housing of the electronic device be arranged on here simultaneously.The front of terminal box 9 forms the Panel 10 of pump assembly.Be not only and carry out with the inside being connected to terminal box 9 of motor coil, and be also provided with the electronic speed regulator of frequency variator 11 form and control and adjustment electronic device 12 there.
Terminal box 9 is provided with plug 13, and for connecting power line, pump assembly is connected on local AC network by this power line, realizes the power supply to motor and whole electronic device thus.Another plug 14 is provided with above power plug 13, this another plug is for connecting peripheral control unit (such as the boiler controller of heating water's device), and at least one pwm signal can be transmitted by this another plug, for carrying out direct rotating speed control by peripheral control unit.
When heat circulation pump is as when independently pump is arranged in heating equipment, no longer need the plug 18 for peripheral control unit, therefore can close this plug by blind plug 15.Then, this unit can be used as heating cycle pump assembly, and at this, this heating cycle pump assembly has internal electron regulator 16, can a large amount of adjustment curve given in advance by this regulator.In addition, in this internal control, be provided with the rating value adjustment of self study.Can be adjusted various different operating mode/adjustment curve/profile by button 17 on the Panel of terminal box 9 from outside.By the indicator 18 formed with five light emitting diodes at this, various adjustment can be read.Alternatively, at this, can also display device be set, for realizing the display comprising word and numeral.Thus, the high effective pump sold with model AlphaII of this design and the Grundfos group of unit conforms to.
In order to realize running in a device, plug 14 and outside rotational speed governor are set up and are contacted.This by control and regulate electronic device design be that it can automatically detect:
A) whether plug 14 contacts with pairing plug 19, is provided with microswitch in the inside of plug 14 for this reason, for detecting this contact, and
B) whether connect peripheral control unit by pairing plug 19, this will be determined electronically.
Once these are detected, then control and regulate electronic device 12 to be just switched on by electronic switch 20, thus, when pwm signal arrives the input end be made up of plug 14, will the tach signal being used for motor 7 accordingly being produced by frequency variator 11.That is, control and regulate electronic device 12 to be switched to external input terminals, then completely or partially can cut off internal regulator.
Reference numerals list
1 centrifugal pump
2 pump case
3 inhalation interfaces
4 pressure interfaces
5 impellers
6 axles
7 motors
8 electric machine casings
9 terminal boxes
10 Panels
11 frequency variators
12 control and regulate electronic device
13 power plugs
14 plugs
15 blind plugs
16 internal regulators
17 buttons
18 indicators
19 pairing plugs
20 switches
Claims (12)
1. a centrifugal pump group, particularly heating cycle pump assembly, have: centrifugal pump (1); Drive the motor (7) of described pump (1); For the electronic speed regulator (11) of described motor (7); With internal electron regulator (16), wherein, using the rotating speed of described motor as controling parameters, wherein, described speed regulator (11) and described regulator (16) form a part for described unit, it is characterized in that, be provided with for the signal input part from motor described in external control (7), and be provided with for being switched to outside rotational speed governor or the device (20) for connecting described outside rotational speed governor from described internal electron regulator (16).
2. centrifugal pump group according to claim 1, is characterized in that, described signal input part is made up of the Electric plug with shutter (14) be arranged on machine unit shell (2,8,9).
3. centrifugal pump group according to claim 1 and 2, it is characterized in that, device (20) for switching is electronic equipment, and it determines whether to connect peripheral control unit, and determining to be switched to described peripheral control unit when connecting described peripheral control unit.
4. according to centrifugal pump group in any one of the preceding claims wherein, it is characterized in that, the described device for switching has the switch be positioned on described pump assembly.
5. the centrifugal pump group according to any one of aforementioned claim 2 to 4, is characterized in that, the device of switching has sensor or microswitch, and it detects the connection of the Electric plug with shutter (14) of described signal input part.
6. according to centrifugal pump group in any one of the preceding claims wherein, it is characterized in that, described regulator (16) has the rating value adjustment of self study, and it automatically adjusts the operation point of described pump according to equipment.
7. centrifugal pump group according to claim 6, is characterized in that, the rating value adjustment of described self study can be activated and inactivation by described peripheral control unit.
8. the centrifugal pump group according to claim 6 or 7, it is characterized in that, be provided with external switch device, utilize described external switch device the adjustment of the self study rating value of described internal regulator (16) can be made to reset and/or one or more adjustment curves of described internal regulator (16) can be changed.
9. centrifugal pump group according to claim 8, is characterized in that, is provided with external switch, and described external switch is turned up the soil with described pump assembly space interval and arranged, and is preferably arranged in the Panel of the heating equipment being provided with described centrifugal pump group.
10. according to centrifugal pump group in any one of the preceding claims wherein, it is characterized in that, by the electric lead for transmitting speed controling signal, preferably pwm signal, the control signal that preferred modulation ground transmission is other, wherein, arrange segregating unit in pump assembly side, described speed controling signal is separated with described other control signal by it.
11., according to centrifugal pump group in any one of the preceding claims wherein, is characterized in that, described pump assembly is designed to supply many heat supplying loop system, and are configured with the device for identifying heat supplying loop to be recycled.
12., according to centrifugal pump group in any one of the preceding claims wherein, is characterized in that, in described internal regulator (16), store multiple profile/adjustment curve, and described profile/adjustment curve can be selected by switch/control device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13158591.1 | 2013-03-11 | ||
| EP13158591.1A EP2778423B1 (en) | 2013-03-11 | 2013-03-11 | Centrifugal pump assembly |
| PCT/EP2014/053515 WO2014139784A1 (en) | 2013-03-11 | 2014-02-24 | Centrifugal pump assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105121857A true CN105121857A (en) | 2015-12-02 |
| CN105121857B CN105121857B (en) | 2018-04-03 |
Family
ID=47900713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480013981.1A Active CN105121857B (en) | 2013-03-11 | 2014-02-24 | Heating cycle pump assembly |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2778423B1 (en) |
| CN (1) | CN105121857B (en) |
| PL (1) | PL2778423T3 (en) |
| TR (1) | TR201806831T4 (en) |
| WO (1) | WO2014139784A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016086986A1 (en) * | 2014-12-03 | 2016-06-09 | Grundfos Holding A/S | An electronic converter unit for retrofitting to an external part of a housing of a pump unit |
| EP4015827B1 (en) | 2020-12-16 | 2023-09-27 | Grundfos Holding A/S | Pump assembly and method for controlling an electric motor for driving an impeller of a pump unit of a pump assembly |
| CN114562463A (en) * | 2022-03-08 | 2022-05-31 | 四川省机械研究设计院(集团)有限公司 | Electromagnetic speed-regulating multi-switching control centrifugal pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735273A1 (en) * | 1995-03-28 | 1996-10-02 | WILO GmbH | Twin pump with main control system |
| EP0866228A2 (en) * | 1997-03-18 | 1998-09-23 | Grundfos A/S | Pump unit |
| US6717383B1 (en) * | 2000-08-30 | 2004-04-06 | Chris S. Brunt | Fountain control for generating dynamically changing flow patterns |
| EP1426699A1 (en) * | 2002-12-02 | 2004-06-09 | Christian Dr. Holter | Circulation pumps automatic control system |
| EP1614903A1 (en) * | 2004-07-07 | 2006-01-11 | Grundfos A/S | Driving unit for a centrifugal pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3920185A1 (en) * | 1989-06-21 | 1991-01-10 | Oplaender Wilo Werk Gmbh | CENTRIFUGAL PUMP OR FAN |
-
2013
- 2013-03-11 TR TR2018/06831T patent/TR201806831T4/en unknown
- 2013-03-11 EP EP13158591.1A patent/EP2778423B1/en active Active
- 2013-03-11 PL PL13158591T patent/PL2778423T3/en unknown
-
2014
- 2014-02-24 CN CN201480013981.1A patent/CN105121857B/en active Active
- 2014-02-24 WO PCT/EP2014/053515 patent/WO2014139784A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735273A1 (en) * | 1995-03-28 | 1996-10-02 | WILO GmbH | Twin pump with main control system |
| EP0866228A2 (en) * | 1997-03-18 | 1998-09-23 | Grundfos A/S | Pump unit |
| US6717383B1 (en) * | 2000-08-30 | 2004-04-06 | Chris S. Brunt | Fountain control for generating dynamically changing flow patterns |
| EP1426699A1 (en) * | 2002-12-02 | 2004-06-09 | Christian Dr. Holter | Circulation pumps automatic control system |
| EP1614903A1 (en) * | 2004-07-07 | 2006-01-11 | Grundfos A/S | Driving unit for a centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105121857B (en) | 2018-04-03 |
| WO2014139784A1 (en) | 2014-09-18 |
| PL2778423T3 (en) | 2018-07-31 |
| TR201806831T4 (en) | 2018-06-21 |
| EP2778423A1 (en) | 2014-09-17 |
| EP2778423B1 (en) | 2018-02-28 |
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