EP1241357A1 - Pumpaggregat - Google Patents
Pumpaggregat Download PDFInfo
- Publication number
- EP1241357A1 EP1241357A1 EP02005483A EP02005483A EP1241357A1 EP 1241357 A1 EP1241357 A1 EP 1241357A1 EP 02005483 A EP02005483 A EP 02005483A EP 02005483 A EP02005483 A EP 02005483A EP 1241357 A1 EP1241357 A1 EP 1241357A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- pump unit
- temperature sensor
- unit according
- medium
- 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.)
- Withdrawn
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
Definitions
- the invention relates to a pump unit with a pump element and a pump housing, with a motor drive in a motor housing as well as with a temperature sensor in a thermally conductive connection stands with a heating element, the heating element and the Temperature sensor arranged on a medium-carrying component are that a thermally conductive connection between the conveyed Medium and the temperature sensor is made and where the temperature sensor with an electrical circuit the motor drive is connected so that the motor drive at one of the Temperature sensor detected temperature above a predetermined Temperature value is switched off.
- a pump unit of this type is in the form of a submersible pump DE 197 41 547 C2 known.
- the heat generated by the heating element is with a sufficiently high water level and a correspondingly low water temperature dissipated from the medium so that the temperature sensor holds a corresponding switch closed. With too little Water level and / or too high water temperature will be generated However, heat is not dissipated, so that the thermal switch opens.
- the heating element and temperature sensor built switching device in the lower part of the pump housing arranged.
- This monitoring device can also be used as dry run protection be provided.
- the disadvantage of the known design is but in that an installation in the pump unit is provided, so that maintenance or repair work is only possible in a complex manner are.
- WO 96/23936 shows a pump device, which is characterized in that is that a turbine built into the main water pipe as Flow sensor is used, and the pump after switching on is only kept in operation as long as the flow sensor is on Water flow.
- a turbine built into the main water pipe as Flow sensor is used, and the pump after switching on is only kept in operation as long as the flow sensor is on Water flow.
- Such a "waterwheel” principle works only from a water volume of approx. 600 liters per hour. This is the use of such a pump for applications with small amounts of water, e.g. for economical irrigation or gentle irrigation of freshly planted not possible.
- Another disadvantage is that the water wheel in particular during long downtimes Limescale deposits.
- the waterwheel also has to be expensive are encapsulated watertight, and is an inductive speed measurement required, which is then implemented using appropriate control electronics must become. Therefore, this version is expensive and prone to failure.
- Document 1-1 269 152 shows a protection procedure against dry running in the case of electric pumps, in which the Liquid temperature is measured.
- the power supply to the drive motor is interrupted and only then restored once the specified temperature has returned to a normal range.
- This protection process works however not reliable because of the temperature of the medium is measured inside the pump.
- the pump is not filled, so a correct measurement is not possible and it can by Overheating of components can cause damage.
- the mechanical seal the pump shaft in the absence of water cooling in dry operation is very hot in a short time is at risk. So that is proposed device only when the hydraulic space is filled with medium effective.
- Pump units with dry running protection are also known are based on a "float principle", i.e. where dry running about the position of one from the water level in the pump inlet worn float is determined. This version points essentially the same disadvantages as the "water wheel principle” have been described.
- the invention has for its object a pump unit with dry run protection specify the disadvantages of the state of the Technology can be avoided.
- a pump unit is to be described be a simple inexpensive assembly and disassembly allowed and powered by air and water cooled motors can be reliable against all cases of dry running is protected and particularly durable and also for low water throughput can be used.
- the pump unit according to the invention can have at least one centrifugal pump in a pump housing.
- the centrifugal pump is by means of a motor drive in a motor housing, which advantageously a includes electrical machine, driven.
- the motor housing must not be designed as a closed housing, but rather for example also designs with frame frames or flange-mounted holding devices conceivable.
- One heating element and one Temperature sensors are connected to each other in a thermally conductive manner in this way on a component that carries the pump medium outside the motor housing arranged that a thermally conductive connection between Pump medium and temperature sensor is made.
- the temperature sensor is connected to the Motor drive interconnected.
- the electrical circuit is designed that the motor drive depending on the temperature sensor recorded values is switched on or off.
- a heat flow is generated in the heating element is generated via the thermally conductive connection between the heating element and transfer the temperature sensor to the temperature sensor.
- This heat flow leads to heating of the thermally conductive Connection or the temperature sensor.
- thermal and geometric properties of the thermal conductive connection - such as Thermal conductivity, heat transfer coefficient on the surface, cross section and length - is determined and also depends on the energy of the heat source in the heating element, the temperature detected by the temperature sensor reaches a level above a predetermined temperature value that leads to a shutdown of the motor drive by means of the electrical circuit.
- the thermally conductive connection between the heating element and the temperature sensor is designed in particular, and the heating power of Dimension heating element so that after a certain period of time the preselected switching point for switching off the drive without cooling or with insufficient cooling - due to the too small Flow rate - through which the pumping medium is reached, the time span is selected such that the pumps can be easily sucked in in emergency operation and simultaneously in the two cases mentioned Dry running a shutdown of the pump set is guaranteed.
- the heating power can be 5 to 6 watts.
- the invention is particularly suitable with low thermal conductivity of the housing.
- the thermally conductive connection between the Medium and the temperature sensor and the heating element is by means of one in an opening of the pump housing or a medium-carrying Supported component used reached.
- This finger-like body serves as a temperature sensor and can be selected by suitable materials have a high thermal conductivity, so that a Temperature change of the medium inside the pump housing or a change in the cooling capacity, i.e. by means of the medium dissipated heat flow with a particularly short time delay is detected by the temperature sensor. This is special given short response time of the temperature sensor.
- the one serving as a temperature sensor Fingers made of a good heat-conducting material and in heat contact stand with a support plate on which the heating element and the Temperature sensor are arranged.
- the execution is expedient chosen so that the thermal contact of the finger with the carrier plate between heating element and temperature sensor.
- a resistor element with a PTC characteristic has proven to be particularly advantageous proven, preferably made of conductive plastic.
- Such Elements are known per se. The electrical resistance increases with them at a preset temperature value at a certain height, for example, 72 ° C suddenly, which in the present case is control engineering Offers advantages.
- the temperature protection circuit according to the invention not just a level switch. It becomes even at a relatively low level Water throughput, such as in the start-up phase of a pump with suction from a greater depth and largely empty Pump, with low water throughput and also with high air content a pump run in the sucked-in water flow at least over a certain one Time span possible, so that for example the suction phase can be bridged until a stable water flow is reached.
- the motor drive is advantageous when temperature values are recorded above a specified limit, switched off and for determined temperature values that are below the specified Limit or in particular below a second predetermined Limit value, switched on.
- the temperature sensor and heating element are preferably without intermediate connection a voltage converter with the operating voltage of the Motor drive applied.
- the pump set is designed so that it is only is secured against running dry using non-moving components, it is characterized by a particularly long service life and reliability out.
- the electrical circuit comprises one Control electronics, which the motor drive and in particular the heating element regulates or controls, and particularly advantageously a Pt100 temperature sensor, which is connected to the control electronics and signals delivers to the same.
- the pump housing advantageously includes a medium inlet in the area its upper end for supplying the pump to be pumped Medium.
- a particularly reliable temperature measurement is carried out then by means of an embodiment in which the temperature sensor and the Heating element above the middle of the pump housing, but at the same time below the medium inlet, especially below the deepest Point of the medium inlet, are arranged as in this area a change in the cooling capacity of the medium in the In the event of a dry run. In normal operation this is Place the medium flow pumped past, while in the case of a Idling of the pump set the liquid level inside the pump very quickly falls below this geodetic level.
- the pump housing advantageously comprises a medium outlet opening, those above the medium inlet, at least above the deepest Point of the medium inlet is arranged.
- a medium outlet opening those above the medium inlet, at least above the deepest Point of the medium inlet is arranged.
- Pump housing an additional particularly advantageous lockable Include water filling opening, which is advantageously designed such that Water or the medium to be pumped in the room inside the pump can be supplied from above even when the pump is not switched on.
- An additional one is advantageous at the lower end of the pump housing Water outlet connected, in particular an integrated Reversing valve, i.e. a valve to support self-priming, includes. This is a complete draining of the hydraulic space, also possible when the pump is not switched on.
- the pump housing particularly advantageously comprises at least one of the materials plastic, stainless steel and / or aluminum.
- materials with lower thermal conductivity e.g. Plastic is suitable particularly advantageous for heat transfer to the temperature sensor the described embodiment with a support body which is in an opening of the pump housing is switched.
- the pump unit according to the invention is characterized in that that both air-cooled and liquid-cooled, in particular water-cooled motor drives can be provided. If the Motor drive is liquid-cooled, in particular by means of the pumped Medium, the motor drive particularly advantageously comprises a liquid-tight good heat-conducting encapsulation.
- a water-cooled motor drive is provided, this can be particularly important advantageously include a metal encapsulation and in particular fanless.
- the Sound emissions can be significantly reduced because the encapsulation is sound-absorbing works, in contrast to the known air-cooled versions, where the fan wheels used have the disadvantage of being relatively high Have noise emissions.
- the water cooling offers the advantage of using smaller, cheaper electric motors can be, since the heat generated in the motor from insulation technology Reasons not to exceed a certain one Temperature may lead to what is used when heat dissipation is poor of larger dimensioned motors.
- the execution of the Motors in a liquid-cooled metal enclosure is regarding the Cooling capacity, i.e. optimized in terms of heat dissipation, and cooling performance is a multiple compared to air-cooled engines.
- An advantageous embodiment of the inventive method for Control of a pump unit is characterized in that after the motor drive has been switched off, switch it on again is only possible by manual operation. If manual is required Actuation is particularly advantageously carried out by means of a Reset switch or a relay. A simple way of manual operation can also disconnect from the grid and restart after the appropriate cooling time.
- Another embodiment sees one after switching off the drive automatic restart or an automatic restart attempt in front.
- the temperature at the temperature sensor is after the Switch off the drive further or again from the temperature sensor detected. If the temperature at the temperature sensor falls to a certain one Level, i.e. the recorded temperature is below a predeterminable Limit value, so the motor drive and especially the heating element switched on again.
- a particularly simple embodiment is in the above 1st variant with bimetal switch and electrical Heating resistor has been described.
- Switching the motor drive and the heating element on and off can also by means of control electronics depending on the Temperature sensor transmitted values can be controlled or regulated.
- a restart attempt is advantageous after a predetermined period of time executed. The number of restart attempts is particularly advantageous limited and after a certain number of unsuccessful restart attempts manual activation is required to switch on again.
- the pump unit comprises a radio receiver that is connected to the electrical circuit or the control electronics is connected. This allows remote control. Switch-off signals are transmitted. Additionally or alternatively the pump unit advantageously carried out with a transmitter, which is controlled by the control electronics, and data on the operating state of the pump unit, especially warning signals in the In the event of dry running or pump shutdown. Still is an acknowledgment advantageous that a to the pump unit or Radio receiver transmitted signal has arrived.
- the pump unit particularly advantageously comprises a pressure sensor, which supplies signals to the control electronics.
- the control electronics switch the pump unit or the motor drive with a measured Pressure below a predeterminable first limit value and above a second predetermined limit value. This ensures that the pumps are at any given time in a given pressure interval is working. This can e.g. always a predetermined pressure range behind be held by the pump set, the pump set switches on if a consumer is switched on (e.g. opening a tap) the pressure drops and switches off again when the desired pressure is built up again (e.g. after closing the Faucet).
- control electronics can be provided with a time switch be particularly programmable. This is an input or Switching off possible at programmed times.
- centrifugal pump 1 connected motor drive not shown.
- the pump housing 1.1 comprises a medium inlet 1.1.1 on the suction side in the area of its upper end. There is also a water filler opening 1.1.3 intended for filling medium to a previously emptied Refill pump and thus a dry run, which leads to Switching off the pump leads to prevent. There is one for emptying Water outlet 1.1.4 at the lower end of the pump housing 1.1 provided.
- a pump wheel 1.3 can be seen, which is arranged on the pump shaft 1.2.
- the medium M is pumped from the suction-side medium inlet 1.1.1 to the medium outlet (not shown) by means of the pump wheel 1.3.
- a temperature sensor 3 and a heating element 4 are arranged outside of the pump housing 1.1 on the pump housing above the vertical center of the pump housing 1.1 directly below the lowest point (represented by plane E).
- Figure 2 shows a detail of the arrangement of the temperature sensor 3 and the heating element 4 directly on a portion of the pump housing 1.1. Only the section of the pump housing 1.1 serves as the heat-conducting connection between the heating element 4, the temperature sensor 3 and the medium M.
- the heat flow generated in the heating element 4 is conducted via the section to the temperature sensor 3. However, part of the heat flow is simultaneously transferred to the medium M via the section by means of heat conduction or by means of convective heat transfer on the inside of the housing 1.1 and dissipated with the medium. If the pump unit does not provide a sufficiently high throughput, the amount of heat dissipated is not sufficient to prevent the temperature level from rising and the motor drive 2 and the heating element 4 are switched off by interrupting the power supply from the power source 10.
- the temperature sensor 3 is as Bimetal switch executed and together in an electrical circuit 5 with the heating element 4 connected in series with the motor drive 2.
- the bimetal switch opens.
- the temperature of the pump housing drops 1.1 again below a given limit, the closes Bimetal switch and provides the circuit in the electrical circuit 5 again, so that the pump by means of the motor drive 2 again is driven.
- This version is particularly suitable for housings with great thermal conductivity.
- the support body 6 is at Embodiment of a cylindrical bolt that is in an opening 21 of a pump housing 1.1 is used, in which the medium M is promoted.
- the bolt 6 is a seal 6.1 in the Sealed opening 21 and is in a manner not shown in the axial Direction held in this opening 21.
- a seal on the outer surface of the housing can be either made in one piece with the plate 20 or with this plate associated with good thermal contact. He sits on plate 20 in a middle area between the temperature sensor 3 and the Heating element 4.
- Fig. 3 is the end protruding into the medium M. of the support body 6 designed as a bolt is shown only relatively briefly. In practice, the bolt can go much further into the area of Protrude medium in order to get the best possible thermal contact to the Medium.
- the embodiment shown in Fig. 3 is suitable especially in the case of a pump housing 1.1 with low thermal conductivity, for example if this housing is made of plastic is.
- the bolt designed as a supporting body 6 fulfills the same Function like the section of the housing 1.1 of FIG. 2.
- a resistor with positive can be used as the temperature sensor 3 Temperature characteristic (PTC), for example a Pt100 sensor or preferably a polymer resistor with a significant kink in the Characteristic curve provided at a predeterminable temperature be, according to the measured temperature over the electrical Circuit 5 provides signals to the control electronics 5.1. This in turn controls according to that obtained from the temperature sensor 3 Input signals the motor drive 2 and the heating element. The Centrifugal pump is switched on and off depending on the temperature secured against dry running.
- PTC Temperature characteristic
- the advantage of the embodiment shown in Fig. 3 is the simple arrangement dry-running protection on a pump housing. she can also be arranged later and can be used for repair or Remove adjustment work in a simple manner.
- FIG. 4 shows an inventive pump unit with a pump part (Centrifugal pump 1) and a drive part with a motor drive 2 in a motor housing 15, which in turn is connected to a cooling housing 7 is.
- the drive part is by means of the flange connection 11 Pump part connected.
- the centrifugal pump 1 comprises a pump housing 1.1 with a pump inlet 13, a medium inlet 1.1.1, a water filling opening 1.1.3 and a water outlet 1.1.4. As shown, there are water fill holes 1.1.3 and water outlet 1.1.4 during the Pump operation closed. In the water outlet 1.1.4 is additionally switched a reversing valve.
- Temperature sensor 3 and the heating element 4 are with the Motor drive connected by means of an electrical circuit (not shown).
- the pump shaft 1.2 carries pump wheels 1.3 and is integral with the drive shaft 2.1 of the motor drive 2 executed.
- the common wave is rotatably supported by bearings 8.1 and 8.2. Sealing the Shaft against the inside of the pump takes place by means of the seal 12, which is advantageous is designed as a mechanical seal.
- the entire motor bearing stator and rotor is on the Side of the bearing 8.1 indirectly in the flange 11, as well as on the side of the Bearing 8.2 executed integrally in the cooling housing 7 of the drive part.
- This version is particularly inexpensive and offers advantages in terms of the heat dissipation from the drive part.
- the motor drive 2 has a liquid-tight encapsulation 9 which on the one hand has a sound-absorbing effect and on the other hand liquid cooling of the motor drive 2 makes it particularly easy to carry out. So will the medium M after exiting the pump part through the medium outlet opening 1.1.2 along the outside of the integral in the cooling case 7 executed encapsulation 9 and takes particular care effectively the heat of the motor drive. Then that will pumped medium M via the water outlet 7.1, the horizontal near the ground is formed in the cooling housing 7, discharged. This water leak 7.1 can be advantageous for a simple connection with a External thread.
- the cooling housing 7 and the flange 11 are particularly advantageous trained that engines of different sizes or different Manufacturers can be used. So both in the same cooling housing 7 with the encapsulation 9 motor drives 2 different Lengths are used, since there is sufficient axial length is provided, as well as various cooling housings by means of Flange 11 can be connected to the pump part. This allows the Diversity of parts can be reduced, the tool costs can be kept low and simple logistics are possible.
- Particularly advantageous is also the pump housing 1.1 by means of interchangeable inserts executed that it can accommodate one or more impellers 1.3 is suitable.
- The can also be particularly advantageous Medium inlet 1.1.1 for the purpose of easy connection such as shown to be designed with an external thread.
- Fig. 5 shows an example of a diagram with switching sequences of a pump unit, executed in the described variant with automatic restart, for different cases of dry running.
- the time t in minutes is plotted on the abscissa, and the temperature T in degrees Celsius recorded by the temperature sensor is plotted on the ordinate.
- the dotted lines I correspond to a state that there is water in the pump, but the outlet is closed and therefore there is no throughput through the pump.
- the dashed lines II show a state in which there is no water in the pump unit. In both cases, sufficient cooling of the temperature sensor is carried by the medium, so that upon reaching a detected temperature T of from equal to 65 degrees Celsius of the drive and the heating resistor is turned off.
- an equal to 55 degrees Celsius is carried reconnection in the event of a sensed temperature of T.
- these two limit temperatures can be determined not only as a discrete temperature value but also as a temperature interval, for example switching off at temperature values in an interval between 60 and 65 degrees Celsius and switching on again in an interval of 50 to 55 degrees Celsius.
- two different curves of the temperature curve over time are plotted for different initial temperatures of the medium, one for a temperature of 35 degrees Celsius (identified by a) and one for a temperature of 5 degrees Celsius (identified by b). The time intervals marked with c and d correspond to the time between switching off and on again.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- Fig. 1a
- eine Prinzipsskizze des Pumpenteiles eines erfindungsgemäßen Pumpenaggregates in einer Seitenansicht,
- Fig. 1b
- das Pumpenteil der Fig. 1a in einer zum Teil aufgeschnittenen Vorderansicht,
- Fig. 2
- eine Prinzipsskizze mit einer Anordnung des Temperatursensors und des Heizelementes unmittelbar auf einem Teilstück des Pumpengehäuses,
- Fig. 3
- eine Prinzipsskizze der Anordnung des Temperatursensors und des Heizelementes auf einem in eine Öffnung des Pumpengehäuses geschalteten Tragkörpers,
- Fig. 4
- eine Ausführung eines erfindungsgemäßen Pumpenaggregates mit einem wassergekühlten elektrischem Motorantrieb, und
- Fig. 5
- ein Diagramm zur Verdeutlichung der Schaltfolge EIN/AUS bei unterschiedlichen Beispielen von Trockenlauf.
Figur 2 zeigt in einem Ausschnitt die Anordnung des Temperatursensors 3 und des Heizelementes 4 direkt auf einem Teilstück des Pumpengehäuses 1.1. Als wärmeleitende Verbindung zwischen Heizelement 4, Temperatursensor 3 und Medium M dient ausschließlich das Teilstück des Pumpengehäuses 1.1. Der im Heizelement 4 erzeugte Wärmestrom wird über das Teilstück zu dem Temperatursensor 3 geleitet. Ein Teil des Wärmestromes wird aber gleichzeitig über das Teilstück dem Medium M mittels Wärmeleitung beziehungsweise mittels konvektiver Wärmeübertragung auf der Innenseite des Gehäuses 1.1 übertragen und mit dem Medium abgeführt. Ist kein genügend großer Durchsatz durch das Pumpaggregat gegeben, so reicht die abgeführte Wärmemenge nicht aus, um einen Anstieg des Temperaturniveaus zu verhindern und der Motorantrieb 2 und das Heizelement 4 werden durch Unterbrechung der Stromzufuhr aus der Stromquelle 10 ausgeschaltet.
Weiterhin sind jeweils zwei unterschiedliche Kurven des Temperaturverlaufes über der Zeit für verschiedene Ausgangstemperaturen des Mediums aufgetragen, einmal für eine Temperatur von 35 Grad Celsius (gekennzeichnet durch a) und einmal für eine Temperatur von 5 Grad Celsius (gekennzeichnet durch b).
Die mit c und d gekennzeichneten Zeitintervalle entsprechen der Zeitspanne zwischen Aus- und Wiedereinschalten.
Claims (21)
- Pumpaggregat mit einem Pumpelement (1) und einem Pumpengehäuse (1.1), mit einem Motorantrieb (2), einem Motorgehäuse (15) sowie mit einem Temperatursensor, der in thermisch leitender Verbindung mit einem Heizelement (4) steht, wobei das Heizelement und der Temperatursensor an einem mediumführenden Bauteil derart angeordnet sind, dass eine thermisch leitende Verbindung zwischen dem zu fördernden Medium M und dem Temperatursensor (3) hergestellt ist und wobei der Temperatursensor (3) derart mittels einer elektrischen Schaltung (5) mit dem Motorantrieb (2) verschaltet ist, dass der Motorantrieb (2) bei einer vom Temperatursensor (3) erfassten Temperatur oberhalb eines vorgegebenen Temperaturwertes abgeschaltet wird,
dadurch gekennzeichnet, dass
das Heizelement (4) und der Temperatursensor (3) außerhalb der mediumführenden Bauteile angeordnet sind und die thermisch leitende Verbindung zwischen dem Medium M, dem Temperatursensor (3) und dem Heizelement (4) mittels eines in eine Öffnung (20) des Pumpengehäuses (1.1) eingesetzten Tragkörpers (6) ausgeführt ist. - Pumpaggregat nach Anspruch 1, dadurch gekennzeichnet, dass der Tragkörper (6) als ein Finger ausgebildet ist, der als Temperaturfühler in einen mediumführenden Bereich hereinragt und abgedichtet an einem der mediumführenden Bauteile (1.1) gehalten ist.
- Pumpaggregat nach Anspruch 2, dadurch gekennzeichnet, dass der Finger als zylindrischer Bolzen (6) ausgebildet und mit einer Ringdichtung (6.1) versehen ist.
- Pumpaggregat nach Anspruch 2, dadurch gekennzeichnet, dass der Finger (6) aus gut wärmeleitendem Material besteht und im Wärmekontakt mit einer Trägerplatte (20) steht, auf der das Heizelement (4) und der Temperatursensor (3) angeordnet sind.
- Pumpaggregat nach Anspruch 5, dadurch gekennzeichnet, dass der Wärmekontakt des Fingers (6) mit der Trägerplatte (20) zwischen Heizelement (4) und Temperatursensor (3) liegt.
- Pumpaggregat nach Anspruch 1, dadurch gekennzeichnet, dass das Heizelement (4) ein Widerstandselement mit PCT-Charakteristik ist und vorzugsweise aus leitfähigem Kunststoff besteht.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Heizelement (4) einen elektrischen Heizwiderstand umfasst, der mit der elektrischen Schaltung (5) verschaltet ist.
- Pumpaggregat nach Anspruch 4, dadurch gekennzeichnet, dass der Heizwiderstand mit dem Motorantrieb (2) in Reihe geschaltet ist, um ein zeitgleiches Ein- und Ausschalten herzustellen.
- Pumpaggregat nach Anspruch 7, dadurch gekennzeichnet, dass der Heizwiderstand mit dem Motorantrieb (2) parallel geschaltet ist, um eine Stromversorgung des Heizwiderstandes auch bei ausgeschaltetem Motorantrieb (2) herzustellen.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Temperatursensor (3) einen Bimetallschalter umfasst, der insbesondere mit dem Motorantrieb (2) in Reihe geschaltet ist.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die elektrische Schaltung (5) eine Steuerelektronik (5.1) umfasst.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass das Pumpaggregat einen Pumpenzulauf (13) umfasst und der Temperatursensor (3) und das Heizelement (4) am Pumpenzulauf (13) angeschlossen sind.
- Pumpenaggregat gemäß einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass das Pumpaggregat einen Pumpenablauf (14) umfasst und der Temperatursensor (3) und das Heizelement (4) am Pumpenablauf (14) angeschlossen sind.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dassdas Pumpengehäuse (1.1) einen Mediumeinlass (1.1.1) im Bereich seines oberen Endes umfasst; undder Temperatursensor (3) und das Heizelement (4) am Pumpengehäuse (1.1) oberhalb der Mitte des Pumpengehäuses (1.1) und unterhalb des Mediumeinlasses (1.1.1) angeschlossen sind.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass das Pumpengehäuse (1.1) einen Mediumeinlass (1.1.1) im Bereich seines oberen Endes und eine Mediumaustrittsöffnung (1.1.2) umfasst, die oberhalb des tiefsten Punktes des Mediumeinlasses (1.1.1) angeordnet ist.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass das Pumpengehäuse (1.1) mindestens eines der nachfolgenden Materialien umfasst:KunststoffEdelstahlAluminium.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass das Pumpengehäuse (1.1) eine zusätzliche, insbesondere verschließbare Wassereinfüllöffnung (1.1.3) und/oder eine zusätzliche, insbesondere ein integriertes Umsteuerventil umfassende Wasserauslassöffnung (1.1.4) umfasst.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 17, gekennzeichnet durch folgende Merkmale:der Motorantrieb (2) ist in ein am Pumpengehäuse (1.1) angeschlossenen Kühlgehäuse (7) geschaltet;die Antriebswelle (2.1) des Motorantriebes (2) und die Pumpenwelle (1.2) der Kreiselpumpe (1), welche insbesondere einteilig ausgeführt sind, sind mittels im Kühlgehäuse (7) zumindest mittelbar integrierten Lagern (8.1, 8.2) drehbar gelagert.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 18, dadurch gekennzeichnet, dass der Motorantrieb (2) eine flüssigkeitsdichte Kapselung (9) umfasst und flüssiggekühlt ist, insbesondere mittels des gepumpten Mediums (m).
- Pumpaggregat gemäß einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass der Motorantrieb (2) flüssigkeitsgekühlt ist, insbesondere frei von Lüfterrädern ist und insbesondere eine schalldämmende Metallkapselung umfasst.
- Pumpaggregat gemäß einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, dass das Pumpengehäuse (1.1) und / oder das Kühlgehäuse (7) derart ausgeführt sind, dass Pumpen (1) und Motorantriebe (2) unterschiedlicher Baugröße insbesondere unterschiedlicher Hersteller eingesetzt werden können.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10111739 | 2001-03-12 | ||
DE2001111739 DE10111739A1 (de) | 2001-03-12 | 2001-03-12 | Pumpaggregat |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1241357A1 true EP1241357A1 (de) | 2002-09-18 |
Family
ID=7677102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02005483A Withdrawn EP1241357A1 (de) | 2001-03-12 | 2002-03-09 | Pumpaggregat |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1241357A1 (de) |
DE (1) | DE10111739A1 (de) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006015693A1 (de) * | 2004-08-02 | 2006-02-16 | Gardena Manufacturing Gmbh | Steuervorrichtung für eine flüssigkeitspumpenanordnung |
EP1672216A1 (de) * | 2004-12-14 | 2006-06-21 | Metabowerke GmbH | Pumpe mit Frostschutzeinrichtung |
WO2007118508A1 (de) * | 2006-04-04 | 2007-10-25 | Hydac Systemgmbh | Einrichtung zum fördern strömungsfähiger medien, insbesondere von schmierstoffen |
DE202007013162U1 (de) * | 2007-09-19 | 2009-02-12 | Horn Gmbh & Co. Kg | Pumpenbaugruppe zum Fördern von Flüssigkeiten |
WO2009059660A1 (en) * | 2007-11-08 | 2009-05-14 | Daimler Ag | Pump and fuel cell system with such a pump |
WO2017085016A1 (de) * | 2015-11-17 | 2017-05-26 | Xylem Ip Management S.À R.L. | Schaltung einer pumpe in abhängigkeit des durchsatzes, wobei der durchsatz durch einen thermischen durchflussmesser bestimmt wird |
WO2019036409A1 (en) * | 2017-08-14 | 2019-02-21 | Wayne/Scott Fetzer Company | THERMALLY CONTROLLED UTILITY PUMP AND ASSOCIATED METHODS |
USD875142S1 (en) | 2015-12-17 | 2020-02-11 | Wayne/Scott Fetzer Company | Pump assembly having two outlets |
US10907638B2 (en) | 2015-07-27 | 2021-02-02 | Wayne/Scott Fetzer Company | Multi-outlet utility pump |
USD910719S1 (en) | 2018-07-12 | 2021-02-16 | Wayne/Scott Fetzer Company | Pump components |
USD942512S1 (en) | 2020-09-29 | 2022-02-01 | Wayne/Scott Fetzer Company | Pump part |
US11592033B2 (en) | 2019-09-30 | 2023-02-28 | Wayne/Scott Fetzer Company | Pump assembly and related methods |
WO2023108252A1 (en) * | 2021-12-17 | 2023-06-22 | Mercedes Textiles Ltd. | Protection system to automatically protect an engine-driven pump |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006015693A1 (de) * | 2004-08-02 | 2006-02-16 | Gardena Manufacturing Gmbh | Steuervorrichtung für eine flüssigkeitspumpenanordnung |
EP1672216A1 (de) * | 2004-12-14 | 2006-06-21 | Metabowerke GmbH | Pumpe mit Frostschutzeinrichtung |
WO2007118508A1 (de) * | 2006-04-04 | 2007-10-25 | Hydac Systemgmbh | Einrichtung zum fördern strömungsfähiger medien, insbesondere von schmierstoffen |
CN101395375B (zh) * | 2006-04-04 | 2012-10-10 | Hydac系统有限公司 | 用于输送可流动介质的装置 |
DE202007013162U1 (de) * | 2007-09-19 | 2009-02-12 | Horn Gmbh & Co. Kg | Pumpenbaugruppe zum Fördern von Flüssigkeiten |
WO2009059660A1 (en) * | 2007-11-08 | 2009-05-14 | Daimler Ag | Pump and fuel cell system with such a pump |
US10907638B2 (en) | 2015-07-27 | 2021-02-02 | Wayne/Scott Fetzer Company | Multi-outlet utility pump |
WO2017085016A1 (de) * | 2015-11-17 | 2017-05-26 | Xylem Ip Management S.À R.L. | Schaltung einer pumpe in abhängigkeit des durchsatzes, wobei der durchsatz durch einen thermischen durchflussmesser bestimmt wird |
CN108350892A (zh) * | 2015-11-17 | 2018-07-31 | 木质部知识产权管理有限责任公司 | 基于由热流量计确定的通过量的泵的开关 |
US20180328366A1 (en) * | 2015-11-17 | 2018-11-15 | Xylem Ip Management S.À R. L. | Switching of a pump based on the throughput determined by a thermal flow meter |
US11111926B2 (en) * | 2015-11-17 | 2021-09-07 | Xylem Ip Management S.À R.L. | Switching of a pump based on the throughput determined by a thermal flow meter |
USD875142S1 (en) | 2015-12-17 | 2020-02-11 | Wayne/Scott Fetzer Company | Pump assembly having two outlets |
USD914060S1 (en) | 2015-12-17 | 2021-03-23 | Wayne/Scott Fetzer Company | Pump portion |
USD916932S1 (en) | 2015-12-17 | 2021-04-20 | Wayne/Scott Fetzer Company | Pump portion |
USD918268S1 (en) | 2015-12-17 | 2021-05-04 | Wayne/Scott Fetzer Company | Pump portion |
USD941883S1 (en) | 2015-12-17 | 2022-01-25 | Wayne/Scott Fetzer Company | Pump housing |
GB2579971A (en) * | 2017-08-14 | 2020-07-08 | Wayne/Scott Fetzer Company | Thermally controlled utility pump and methods relating to same |
WO2019036409A1 (en) * | 2017-08-14 | 2019-02-21 | Wayne/Scott Fetzer Company | THERMALLY CONTROLLED UTILITY PUMP AND ASSOCIATED METHODS |
US11326608B2 (en) | 2017-08-14 | 2022-05-10 | Wayne/Scott Fetzer Company | Thermally controlled utility pump and methods relating to same |
USD910719S1 (en) | 2018-07-12 | 2021-02-16 | Wayne/Scott Fetzer Company | Pump components |
US11592033B2 (en) | 2019-09-30 | 2023-02-28 | Wayne/Scott Fetzer Company | Pump assembly and related methods |
USD942512S1 (en) | 2020-09-29 | 2022-02-01 | Wayne/Scott Fetzer Company | Pump part |
WO2023108252A1 (en) * | 2021-12-17 | 2023-06-22 | Mercedes Textiles Ltd. | Protection system to automatically protect an engine-driven pump |
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