EP3610153A1 - Pump unit - Google Patents

Pump unit

Info

Publication number
EP3610153A1
EP3610153A1 EP17735491.7A EP17735491A EP3610153A1 EP 3610153 A1 EP3610153 A1 EP 3610153A1 EP 17735491 A EP17735491 A EP 17735491A EP 3610153 A1 EP3610153 A1 EP 3610153A1
Authority
EP
European Patent Office
Prior art keywords
pump unit
control valve
pump
fluid
unit
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
Application number
EP17735491.7A
Other languages
German (de)
French (fr)
Other versions
EP3610153B1 (en
Inventor
Carsten Sauerbier
Wilhelm SCHNICKE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vetter GmbH
Original Assignee
Vetter GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vetter GmbH filed Critical Vetter GmbH
Priority to PL17735491T priority Critical patent/PL3610153T3/en
Publication of EP3610153A1 publication Critical patent/EP3610153A1/en
Application granted granted Critical
Publication of EP3610153B1 publication Critical patent/EP3610153B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/06—Mobile combinations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves

Definitions

  • the present invention relates to a pump unit which can be carried by an operator for pressure-filling inflatable filling spaces with a fluid, preferably with compressed air, in particular lifting bags, shut-off cushions, tents or the like, having the features of the preamble of claim 1.
  • lifting bags In rescue and disaster operations easy access to the scene of the accident is not always given, so this often eliminates heavy equipment. Especially with spilled, trapped and / or trapped persons a quick rescue is essential for survival. For lifting wreckage, overturned vehicles or the like, lifting bags have been established as a proven means. In particular in the case of destroyed buildings, be it through earthquakes, gas explosions, warfare or the like, or even in accidents involving vehicles, lifting bags offer a good possibility of rescue.
  • Lifting bags are usually used in their flattened form in small gaps, for example between debris, and inflated with compressed air from compressed air bottles. For operation, a pressure of up to 12 bar is usually used. The lifting bag thereby expands in a predetermined direction, which is predetermined by the construction of the lifting bag. In addition to a compressed air cylinder for the use of lifting bags various other components are necessary, such. As pressure reducer, pressure gauge and connecting hoses between the individual components.
  • a pump unit according to the preamble of claim 1 is known from DE 10 2007 014 467 A1.
  • the pump unit has a control unit in which the operation of the fluid pump can be controlled by an on / off switch.
  • the on / off switch is located either directly on the housed in the pump unit control unit or at the free end of the hose, which is connectable to the lifting bag.
  • the inflation of the lifting bag is thus effected by pressing the switch.
  • fluid is pumped into the cushion at maximum power.
  • salvage operations where a lifting bag for lifting z. B. a collapsed wall or the like. For use, this can lead to uncontrolled conditions that endanger a person buried.
  • the object of the present invention is to provide a pump unit of the generic type which ensures improved safety in use.
  • a pump unit which can be carried by an operator for pressure filling of inflatable filling spaces with a fluid, preferential air, in particular of lifting bags, Absperrkissen, tents or the like, is provided, wherein the pump unit, a fluid pump, an electric motor for driving the fluid pump, an accumulator, a control unit for controlling the operation of the fluid pump, a connection for connecting one of the filling leading Fluid hose and a positioned on the pump unit, preferably manually operable control valve comprises.
  • a directly positioned on the pump unit control valve is provided, a single operator who operates the pump unit, even at the point of use make a controlled filling of the lifting bag at any time, so that hazardous states of the type mentioned can be effectively avoided.
  • Separately entrained valve units can be omitted. The operator only has to connect the fluid hose to the pump unit and the cushion for the rescue operation and can immediately start the rescue operation.
  • the fluid pump may expediently be a compressor, in particular a reciprocating compressor, a turbo-compressor, or even, in the case of special filling spaces, a fan.
  • the pump unit may comprise a housing or a support frame, wherein the control valve may be housed directly in or on the housing or support frame. This ensures that a fully operational pump unit can be easily carried by an operator and connected only to the fluid hose (plug and play).
  • the placement of the control valve in or on the housing or support frame has the further advantage that in addition to the pump unit no further component must be carried. The operator does not have to worry about the connection of several components during the rescue operation, but can concentrate immediately on the person to be rescued.
  • the control valve may preferably be housed in or part of a valve block. Due to the placement in the valve block, the control valve is no longer loose and does not need to be held in addition.
  • the valve Block and thus the control valve can be easily fixed in or on the housing or support frame.
  • control valve can be positioned directly on the fluid pump.
  • the control valve and the fluid pump can be directly connected.
  • a pressure measuring device may be provided on the pump unit, which directly detects and displays the filling pressure of the inflatable filling space.
  • the inflation can be monitored by the operator directly on the pump unit which serves it, which allows a controlled filling.
  • the pressure measuring device can expediently be located between the connection and the control valve, so that it is able to directly measure the pressure constantly prevailing in the filling space or in the fluid line to the filling space. To monitor the filling pressure, the pressure measuring device is thus already at the required point d. H. pre-installed on the pump unit.
  • the pressure measuring device can also be accommodated in or on the valve block.
  • the present invention also makes it possible to connect the control valve to the control unit via a signal line.
  • the current operating mode of the control valve can be transmitted to the control unit.
  • the operator can thus control the control unit and, for example, the electric motor of the fluid pump as needed via the control valve.
  • the engine speed and thus the delivery rate of the pump can be controlled by the operator.
  • the pressure measuring device can also be connected to the control unit via a signal line.
  • the control unit can record, for example, the temporal pressure curve and z. B. accordingly control the electric motor.
  • a pressure-dependent readjustment of the delivery rate for example, at pressure drop z. B. done in lifting bags.
  • the signal lines between the control unit and the control valve and pressure measuring device may be relevant.
  • control valves are provided on the pump unit.
  • two lifting bags controlled by an operator can be pumped up without the need for additional components.
  • the simultaneous use of two lifting bags is useful, for example, to improve control over the load distribution of z. B. to be lifted wreckage parts.
  • the control valve may be a control valve.
  • Such a control valve can, for. B. a 3/3 - way valve, which has a pumping position (pressure build-up), a bypass position (no pressure build-up, no discharge) and a venting position (discharge). It is particularly advantageous if the control valve is a proportional valve.
  • the invention also makes it possible to even autonomously operate the control valve from the control unit when needed.
  • a cooling fan can be arranged on the fluid pump. This ensures that the fluid pump does not overheat, even when in continuous use.
  • the mode of operation of the pump unit is characterized in that in a first operating mode the filling space is filled with fluid, in a second operating mode the pressure in the filling space is kept at least substantially constant, the control valve transmits a first signal to the control unit for the first operating mode, the control valve for the second operating mode transmits a second signal to the control unit, wherein the control unit detects the first or second signal, and controls the electric motor according to the first or second signal.
  • the electric motor can be switched off, for example, with a shutdown signal in order to save energy in the accumulator.
  • fluid can be drained from the filling space.
  • the third operating mode can also be controlled via the control valve.
  • the control valve can transmit a third signal to the control unit, whereupon the control unit controls and / or switches off the electric motor accordingly. This has the advantage that the electric motor is only switched on and consumes energy when fluid is required for pressure filling of the filling space.
  • the pressure measuring device can transmit the measured pressure to the control unit, wherein the control unit detects the change over time of the pressure and transmits a switch-on and / or switch-off signal to the electric motor as a function of the time change of the pressure.
  • the control unit can thus, for example, preparatory to switch on the electric motor, even before the pressurized fluid is required at the control valve.
  • control unit actuates the control valve autonomously.
  • the control unit actuates the control valve autonomously.
  • the control unit actuates the control valve autonomously.
  • the control unit actuates the control valve autonomously.
  • a signal for the second operating mode can preferably be sent to the control valve by the control unit.
  • the pressure can be autonomously maintained by the control unit at the target value by the second operating mode.
  • a previous filling or discharge of the fluid in or out of the inflatable filling space is thus terminated.
  • a signal for the third operating mode can be sent to the control valve by the control unit.
  • the fluid is discharged from the inflatable filling space in the third operating mode.
  • an autonomous monitoring of the overpressure protection can be done by the control unit.
  • FIG. 1 a greatly simplified schematic diagram of the use of the pump unit when filling a lifting bag for a salvage operation
  • 2 shows a greatly simplified schematic representation of the pump unit with a valve block
  • 3 is a greatly simplified schematic representation of the pump unit with two control valves.
  • FIG. 4 shows an exemplary time profile of the pressure at the pressure measuring device and corresponding operating states of the control valve and the electric motor z. B. in an automatic operation.
  • a portable pump unit 10 is shown in an exemplary recovery operation.
  • the operator can independently carry and operate the portable pump unit 10.
  • the pump unit 10 is connected via the connection 18 by means of a fluid hose 3 to a lifting bag 2.
  • the lifting bag 2 is placed between debris and is filled with a fluid, e.g. B. compressed air, filled, for example, to widen a gap between the debris.
  • the operator must carry an appliance unit in the form of the pump unit 10, which already contains all the components required to fill inflatable filling spaces, such as a lifting bag. Only one fluid hose connection 3 is needed, which is located between the pump unit 10 and the lifting bag 2.
  • FIG. 2 A more detailed illustration of the pump unit 10 according to the invention according to FIG. 1 is shown in FIG. 2.
  • the pump unit 10 is connected to the lifting bag 2 by means of a fluid hose 3.
  • the pump unit 10 has to facilitate transport a support frame 19, which also has a stand 22 for safe settling on the floor.
  • the pump unit 10 has a fluid pump 12 (for example a compressor, in particular piston compressor) in order to provide the required pressure for filling an inflatable filling space, such as here the lifting bag 2.
  • the Fluid pump 12 is driven by an electric motor 1 1 and cooled by a cooling fan 14.
  • the electric motor 1 1 and the cooling fan 14 are in turn fed by an accumulator 13 with energy.
  • the pump unit 10 comprises a control unit 17.
  • the fluid pump 12 is also connected to a directly on the pump unit 10 arranged, manually operable control valve 16 which allows a controlled filling of the lifting bag 2.
  • the control valve 16 is housed in a valve block 23 which is also housed on the support frame 19.
  • the valve block 23 is positioned directly on the fluid pump 12.
  • the pump unit 10 has a port 18 for connecting the fluid hose 3 to the pump unit 10 prior to the start of the deployment.
  • the port 18 communicates with the control valve 16 in connection.
  • the control valve 16 is preferably a 3/3-way valve, which in the left valve position a pumping position (pressure build-up), in the central valve position a bypass position (no pressure build-up, no discharge) and in the right valve position a venting position ( Discharge). This is preferably a so-called proportional valve.
  • a pressure measuring device 24 for monitoring and displaying the filling pressure of the lifting bag 2.
  • a safety valve 15 between the fluid pump 12 and the control valve 16 may be arranged.
  • the safety valve 15 may conveniently be a pressure relief valve to protect the pump unit 10 against excessive pressure and to avoid damage.
  • the control valve 16 is connected to the control unit 17 via a signal line 20.
  • the current operating mode or the current position of the control valve 16 can be transmitted to the control unit 17 via the signal line 20.
  • the control unit 17 can accordingly control the electric motor 1 1 and, as required, the electric motor 1 1 on or off or regulate the power of the electric motor 1 1.
  • the pressure measuring be connected via a further signal line 21 to the control unit 17.
  • the control unit 17 may, for example, record the temporal pressure profile.
  • a cooling fan 14 may be disposed on the fluid pump 12. This can also be connected to the control unit 17 via a signal line.
  • control unit 17 can transmit control signals to the control valve 16. According to the pressure variation, the control unit 17 can thus regulate a filling, deflation or maintenance of the filling pressure on the control valve 16, as a result of the situation, in order, for example, to set a target pressure in the inflatable filling space, such as, for example. In a pneumatic tent or lifting bag for repairs.
  • FIG. 3 shows a further embodiment of the pump unit 10 with two control valves 16 integrated therein.
  • Each control valve 16 has a separate port 18.
  • the pump unit 10 further comprises a support frame 19 with base 22. On the support frame 19, all components are housed.
  • the fluid pump 12, the cooling fan 14, the safety valve 15, the electric motor 1 1, the accumulator 13 and the control unit 17 are provided in a simple design.
  • the fluid pump 12 is connected to both control valves 16.
  • Each control valve 16 also has a separate pressure measuring device 24.
  • the control unit 17 is connected via the signal lines 20 to the control valves 16 and the signal lines 21 to the pressure measuring means 24.
  • the two control valves 16 are housed in a common valve block 23, as well as the two Druckmessein - Directions 24.
  • the valve block 23 is disposed or attached directly to the fluid pump 12.
  • FIG. 4 shows an exemplary time profile of the measured filling pressure of an inflatable filling space at the pressure measuring device 24 and the corresponding chenden operating conditions of the control valve 16 and the electric motor 1 1 shown in an automatic or semi-automatic operation.
  • Section I the pressure drops from the set point, with the control valve 16 is on hold and the electric motor 1 1 is turned off.
  • the control valve 16 is switched in section II in the first operating mode to fill the filling space with fluid.
  • the electric motor 1 1 is turned on in accordance with the control unit 17.
  • the control valve 16 Upon reaching the target value at the pressure measuring device 24 in section III, the control valve 16 is switched by the control unit 17 back into the second operating mode for holding the filling pressure, wherein the electric motor 1 1 is turned off.
  • control valve 16 is switched to the first operating mode analogously to section II, before it receives a signal for switching to the second operating mode for holding the filling pressure in section V of the control unit 17.
  • the control unit 17 switches the control valve 16 into a third operating mode.
  • the control valve 16 is in the third operating mode to discharge the fluid from the inflatable filling chamber, wherein the electric motor 1 1 is still switched off.
  • the control valve 16 is switched by the control unit 17 analogous to sections I and III in the second operating mode for holding the filling pressure.
  • the control of the control valve 16 and the electric motor 1 1 in sections VIII and IX is analogous to the control in sections II and III.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

The present invention relates to a pump unit (10) which can be carried by an operating person and which serves for the pressurized filling of inflatable filling chambers with a fluid, in particular lifting pads (2), blocking pads, tents or the like, comprising a fluid pump (12), an electric motor (11) for driving the fluid pump (12), a battery (13), a control unit (17) for controlling the operation of the fluid pump, and a connector (18) for the connection of a fluid hose (3) which leads to the filling chamber, wherein a preferably manually actuatable control valve (16) is provided which is positioned on the pump unit (10).

Description

Pumpeneinheit  pump unit
Die vorliegende Erfindung betrifft ein von einer Bedienungsperson mitführbare Pumpeneinheit zum Druckbefüllen von aufblasbaren Füllräumen mit einem Fluid, vorzugsweise mit Druckluft, insbesondere von Hebekissen, Absperrkissen, Zelten oder dergleichen, mit den Merkmalen des Oberbegriffs des Anspruchs 1. The present invention relates to a pump unit which can be carried by an operator for pressure-filling inflatable filling spaces with a fluid, preferably with compressed air, in particular lifting bags, shut-off cushions, tents or the like, having the features of the preamble of claim 1.
Technologischer Hintergrund Technological background
Bei Rettungs- und Katastropheneinsätzen ist ein einfacher Zugang zur Unglücksstelle nicht immer gegeben, so dass hierbei oftmals schweres Gerät ausscheidet. Besonders bei verschütteten, eingeschlossenen und/oder eingeklemmten Personen ist eine schnelle Rettung überlebenswichtig. Zum Anheben von Trümmerteilen, umgestürzten Fahrzeugen oder ähnlichem haben sich Hebekissen als probates Mittel etabliert. Insbesondere bei zerstörten Gebäuden, sei es durch Erdbeben, Gasexplosionen, Kriegshandlungen oder dergleichen, oder auch bei Unfäl- len mit Fahrzeugen bieten Hebekissen eine gute Rettungsmöglichkeit. In rescue and disaster operations easy access to the scene of the accident is not always given, so this often eliminates heavy equipment. Especially with spilled, trapped and / or trapped persons a quick rescue is essential for survival. For lifting wreckage, overturned vehicles or the like, lifting bags have been established as a proven means. In particular in the case of destroyed buildings, be it through earthquakes, gas explosions, warfare or the like, or even in accidents involving vehicles, lifting bags offer a good possibility of rescue.
Hebekissen werden in der Regel in ihrer abgeflachten Form in kleine Spalte, beispielsweise zwischen Trümmerstücke, eingesetzt und mit Druckluft aus Druckluftflaschen aufgeblasen. Zum Betrieb wird üblicherweise ein Druck von bis zu 12 bar verwendet. Das Hebekissen dehnt sich dadurch in eine vorgegebene Richtung aus, welche durch die Konstruktion des Hebekissens vorgegeben ist. Neben einer Druckluftflasche sind für die Verwendung von Hebekissen verschiedene weitere Komponenten notwendig, wie z. B. Druckminderer, Manometer sowie Verbindungsschläuche zwischen den einzelnen Komponenten. Lifting bags are usually used in their flattened form in small gaps, for example between debris, and inflated with compressed air from compressed air bottles. For operation, a pressure of up to 12 bar is usually used. The lifting bag thereby expands in a predetermined direction, which is predetermined by the construction of the lifting bag. In addition to a compressed air cylinder for the use of lifting bags various other components are necessary, such. As pressure reducer, pressure gauge and connecting hoses between the individual components.
Rettungskräfte sind bei Rettungseinsätzen sehr hohen Stressbelastungen ausausgesetzt. Zudem müssen Bergungseinsätze besonders schnell ausgeführt werden, um Menschenleben zu retten. Aus diesem Grund müssen Rettungsgerä- te besonders einfach und bedienungssicher an der Unglücksstelle anwendbar sein. Rescue workers are exposed to very high stress levels during rescue operations. In addition, salvage operations must be carried out particularly quickly to save lives. For this reason, emergency te be particularly easy and safe to use at the site of the accident.
Nächstliegender Stand der Technik Nearest prior art
Eine Pumpeneinheit gemäß dem Oberbegriff des Anspruchs 1 ist aus der DE 10 2007 014 467 A1 bekannt. Die Pumpeneinheit weist eine Steuereinheit auf, bei der der Betrieb der Fluidpumpe durch einen Ein-/Ausschalter gesteuert werden kann. Der Ein-/Ausschalter befindet sich entweder unmittelbar an der in der Pumpeneinheit untergebrachten Steuereinheit oder an dem freien Ende des Schlauchs, der mit dem Hebekissen verbindbar ist. Das Aufpumpen des Hebekissens wird somit durch Betätigen des Einschalters bewirkt. Daraus resultiert, dass Fluid mit maximaler Leistung in das Kissen eingepumpt wird. Vor allem bei Bergungseinsätzen, bei denen ein Hebekissen zum Anheben z. B. einer eingestürzten Wand oder dgl. zur Anwendung kommt, kann es hierdurch zu unkontrollierten Zuständen kommen, welche eine verschüttete Person gefährden. A pump unit according to the preamble of claim 1 is known from DE 10 2007 014 467 A1. The pump unit has a control unit in which the operation of the fluid pump can be controlled by an on / off switch. The on / off switch is located either directly on the housed in the pump unit control unit or at the free end of the hose, which is connectable to the lifting bag. The inflation of the lifting bag is thus effected by pressing the switch. As a result, fluid is pumped into the cushion at maximum power. Especially in salvage operations where a lifting bag for lifting z. B. a collapsed wall or the like. For use, this can lead to uncontrolled conditions that endanger a person buried.
Aufgabe der vorliegenden Erfindung Object of the present invention
Die Aufgabe der vorliegenden Erfindung besteht darin, eine Pumpeneinheit der gattungsgemäßen Art zur Verfügung zu stellen, die eine verbesserte Sicherheit im Einsatz gewährleistet. The object of the present invention is to provide a pump unit of the generic type which ensures improved safety in use.
Lösung der Aufgabe Solution of the task
Die vorstehende Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Zweckmäßige Ausgestaltungen der vorliegenden Erfindung werden in den Unteransprüchen beansprucht. The above object is solved by the features of claim 1. Advantageous embodiments of the present invention are claimed in the subclaims.
Erfindungsgemäß ist eine von einer Bedienungsperson mitführbare Pumpeneinheit zum Druckbefüllen von aufblasbaren Füllräumen mit einem Fluid, Vorzugs- weise Luft, insbesondere von Hebekissen, Absperrkissen, Zelten oder dergleichen, vorgesehen, wobei die Pumpeneinheit eine Fluidpumpe, einen Elektromotor zum Antrieb der Fluidpumpe, einen Akkumulator, eine Steuereinheit zur Steuerung des Betriebs der Fluidpumpe, einen Anschluss zum Anschließen ei- nes zum Füllraum führenden Fluidschlauchs sowie ein an der Pumpeneinheit positioniertes, vorzugsweise manuell betätigbares Steuerventil umfasst. Dadurch, dass ein unmittelbar an der Pumpeneinheit positioniertes Steuerventil vorgesehen ist, kann eine einzige Bedienungsperson, die die Pumpeneinheit bedient, auch unmittelbar an der Einsatzstelle eine jederzeit kontrollierte Befüllung des Hebekissens vornehmen, so dass Gefährdungszustände der eingangs genannten Art wirksam vermieden werden können. Separat mitzuführende Ventileinheiten können entfallen. Die Bedienungsperson muss für den Rettungseinsatz lediglich den Fluidschlauch an der Pumpeneinheit sowie dem Kissen anschließen und kann sofort mit dem Rettungseinsatz beginnen. According to the invention, a pump unit which can be carried by an operator for pressure filling of inflatable filling spaces with a fluid, preferential air, in particular of lifting bags, Absperrkissen, tents or the like, is provided, wherein the pump unit, a fluid pump, an electric motor for driving the fluid pump, an accumulator, a control unit for controlling the operation of the fluid pump, a connection for connecting one of the filling leading Fluid hose and a positioned on the pump unit, preferably manually operable control valve comprises. Characterized in that a directly positioned on the pump unit control valve is provided, a single operator who operates the pump unit, even at the point of use make a controlled filling of the lifting bag at any time, so that hazardous states of the type mentioned can be effectively avoided. Separately entrained valve units can be omitted. The operator only has to connect the fluid hose to the pump unit and the cushion for the rescue operation and can immediately start the rescue operation.
Bei der Fluidpumpe kann es sich zweckmäßigerweise um einen Verdichter, insbesondere einen Kolbenverdichter, einen Turboverdichter, oder sogar, bei besonderen Füllräumen, um ein Gebläse handeln. Zweckmäßigerweise kann die Pumpeneinheit ein Gehäuse oder einen Tragerahmen umfassen, wobei das Steuerventil unmittelbar im oder am Gehäuse bzw. Tragerahmen untergebracht sein kann. Dies gewährleistet, dass eine voll einsatzfähige Pumpeneinheit in einfacher Weise von einer Bedienungsperson mitführbar und nur noch mit dem Fluidschlauch zu verbinden ist (Plug and Play). Die Unterbringung des Steuerventils im oder am Gehäuse bzw. Tragerahmen hat den weiteren Vorteil, dass zusätzlich zur Pumpeneinheit keine weitere Komponente mitgeführt werden muss. Die Bedienungsperson muss sich somit während des Rettungseinsatzes nicht um die Verbindung von mehreren Komponenten kümmern, sondern kann sich sofort auf die zu rettende Person konzentrieren. The fluid pump may expediently be a compressor, in particular a reciprocating compressor, a turbo-compressor, or even, in the case of special filling spaces, a fan. Conveniently, the pump unit may comprise a housing or a support frame, wherein the control valve may be housed directly in or on the housing or support frame. This ensures that a fully operational pump unit can be easily carried by an operator and connected only to the fluid hose (plug and play). The placement of the control valve in or on the housing or support frame has the further advantage that in addition to the pump unit no further component must be carried. The operator does not have to worry about the connection of several components during the rescue operation, but can concentrate immediately on the person to be rescued.
Das Steuerventil kann vorzugsweise in einem Ventilblock untergebracht oder Bestandteil desselben sein. Durch die Unterbringung im Ventilblock ist das Steuerventil nicht mehr lose und muss nicht zusätzlich gehalten werden. Der Ventil- block und damit das Steuerventil können in einfacher Weise im oder am Gehäuse bzw. Tragrahmen fixiert werden. The control valve may preferably be housed in or part of a valve block. Due to the placement in the valve block, the control valve is no longer loose and does not need to be held in addition. The valve Block and thus the control valve can be easily fixed in or on the housing or support frame.
Zudem kann das Steuerventil unmittelbar an der Fluidpumpe positioniert sein. Das Steuerventil und die Fluidpumpe können unmittelbar verbunden sein. In addition, the control valve can be positioned directly on the fluid pump. The control valve and the fluid pump can be directly connected.
Vorzugsweise kann an der Pumpeneinheit eine Druckmesseinrichtung vorgesehen sein, der den Fülldruck des aufblasbaren Füllraums unmittelbar detektiert und anzeigt. Durch die Druckmesseinrichtung kann das Aufpumpen von der Be- dienperson unmittelbar an der Pumpeneinheit, die sie bedient, überwacht werden, was ein kontrolliertes Befüllen ermöglicht. Insbesondere beim Befüllen eines Hebekissens, ist ein kontrolliertes Anheben von Trümmerteilen essentiell wichtig, damit keine plötzlichen unkontrollierten Lastverteilungen auftreten. Die Druckmesseinrichtung kann sich zweckmäßigerweise zwischen dem An- schluss und dem Steuerventil befinden, so dass sie in der Lage ist, den im Füllraum bzw. in der Fluidleitung zum Füllraum ständig vorherrschenden Druck direkt zu messen. Zur Überwachung des Fülldrucks ist die Druckmesseinrichtung damit ebenfalls bereits an der dafür benötigten Stelle d. h. an der Pumpeneinheit vorin- stalliert. Preferably, a pressure measuring device may be provided on the pump unit, which directly detects and displays the filling pressure of the inflatable filling space. By means of the pressure measuring device, the inflation can be monitored by the operator directly on the pump unit which serves it, which allows a controlled filling. In particular, when filling a lifting bag, a controlled lifting of debris is essential to avoid sudden uncontrolled load distributions. The pressure measuring device can expediently be located between the connection and the control valve, so that it is able to directly measure the pressure constantly prevailing in the filling space or in the fluid line to the filling space. To monitor the filling pressure, the pressure measuring device is thus already at the required point d. H. pre-installed on the pump unit.
Vorzugsweise kann die Druckmesseinrichtung ebenfalls im oder am Ventilblock untergebracht sein. Die vorliegende Erfindung ermöglicht es zudem, das Steuerventil mit der Steuereinheit über eine Signalleitung zu verbinden. Dadurch kann der aktuelle Bedienmodus des Steuerventils an die Steuereinheit übermittelt werden. Die Bedienperson kann somit über das Steuerventil die Steuereinheit und beispielsweise den Elektromotor der Fluidpumpe bedarfsgerecht steuern. Beispielsweise kann von der Bedienperson in Abhängigkeit der Stellung des Steuerventils die Motordrehzahl und damit die Förderleistung der Pumpe gesteuert werden. Dies ermöglicht z. B. ein besonders exaktes Anheben einer Last mittels eines Hebekissens. Zudem kann auch die Druckmesseinrichtung mit der Steuereinheit über eine Signalleitung verbunden sein. Somit kann die Steuereinheit beispielsweise den zeitlichen Druckverlauf aufzeichnen und z. B. entsprechend den Elektromotor ansteuern. Ferner kann eine druckabhängige Nachregelung der Förderleistung bei- spielsweise bei Druckabfall z. B. im Hebekissen erfolgen. Preferably, the pressure measuring device can also be accommodated in or on the valve block. The present invention also makes it possible to connect the control valve to the control unit via a signal line. As a result, the current operating mode of the control valve can be transmitted to the control unit. The operator can thus control the control unit and, for example, the electric motor of the fluid pump as needed via the control valve. For example, depending on the position of the control valve, the engine speed and thus the delivery rate of the pump can be controlled by the operator. This allows z. B. a particularly accurate lifting a load by means of a lifting bag. In addition, the pressure measuring device can also be connected to the control unit via a signal line. Thus, the control unit can record, for example, the temporal pressure curve and z. B. accordingly control the electric motor. Furthermore, a pressure-dependent readjustment of the delivery rate, for example, at pressure drop z. B. done in lifting bags.
Insbesondere für einen automatischen oder halbautomatischen Betrieb der Pumpeneinheit zum Halten eines Solldrucks oder zum Einhalten einer erwünschten Befüllungskennlinie durch die Steuereinheit können die Signalleitungen zwischen Steuereinheit und Steuerventil sowie Druckmesseinrichtung relevant sein. In particular, for an automatic or semi-automatic operation of the pump unit for holding a target pressure or for maintaining a desired filling characteristic by the control unit, the signal lines between the control unit and the control valve and pressure measuring device may be relevant.
Es kann zweckmäßig sein, dass an der Pumpeneinheit eine Mehrzahl, insbesondere mindestens zwei, Steuerventile vorgesehen sind. Somit können beispielsweise zwei Hebekissen von einer Bedienungsperson kontrolliert aufgepumpt werden, ohne dass weitere Komponenten notwendig wären. Der gleichzeitige Einsatz von zwei Hebekissen bietet sich beispielsweise an, um eine verbesserte Kontrolle über die Lastverteilung von z. B. anzuhebenden Trümmerteilen zu gewährleisten. Vorzugsweise kann es sich bei dem Steuerventil um ein Steuerventil handeln. Ein solches Steuerventil kann z. B. ein 3/3 - Wegeventil sein, welches eine Pumpstellung (Druckaufbau), eine Bypass-Stellung (kein Druckaufbau, keine Entlastung) sowie eine Entlüftungsstellung (Entlastung) aufweist. Besonders vorteilhaft ist es, wenn es sich bei dem Steuerventil um ein Proportionalventil handelt. Dieses erlaubt einen je nach manueller Betätigung d. h. je nach Stellung der Bedieneinrichtung des Steuerventils proportionale Ventilfunktion, wodurch harte Schaltübergänge vermieden werden können. Alternativ macht es die Erfindung auch möglich, das Steuerventil von der Steuereinheit bei Bedarf sogar autonom zu betätigen. Zweckmäßigerweise kann an der Fluidpumpe ein Kühlgebläse angeordnet sein. Dieses stellt sicher, dass die Fluidpumpe, selbst bei Dauerbenutzung, nicht überhitzt. Vorzugsweise ist die Arbeitsweise der Pumpeneinheit darin gekennzeichnet, dass in einem ersten Bedienmodus der Füllraum mit Fluid befüllt wird, in einem zweiten Bedienmodus der Druck im Füllraum zumindest im Wesentlichen konstant gehalten wird, das Steuerventil für den ersten Bedienmodus ein erstes Signal an die Steuereinheit übermittelt, das Steuerventil für den zweiten Bedienmo- dus ein zweites Signal an die Steuereinheit übermittelt, wobei die Steuereinheit das erste oder zweite Signal erfasst, und entsprechend dem ersten oder zweiten Signal den Elektromotor steuert. Im zweiten Bedienmodus kann der Elektromotor beispielsweise mit einem Abschaltsignal abgeschaltet werden, um Energie im Akkumulator einzusparen. It may be expedient that a plurality, in particular at least two, control valves are provided on the pump unit. Thus, for example, two lifting bags controlled by an operator can be pumped up without the need for additional components. The simultaneous use of two lifting bags is useful, for example, to improve control over the load distribution of z. B. to be lifted wreckage parts. Preferably, the control valve may be a control valve. Such a control valve can, for. B. a 3/3 - way valve, which has a pumping position (pressure build-up), a bypass position (no pressure build-up, no discharge) and a venting position (discharge). It is particularly advantageous if the control valve is a proportional valve. This allows a depending on manual operation ie depending on the position of the control device of the control valve proportional valve function, whereby hard switching transitions can be avoided. Alternatively, the invention also makes it possible to even autonomously operate the control valve from the control unit when needed. Conveniently, a cooling fan can be arranged on the fluid pump. This ensures that the fluid pump does not overheat, even when in continuous use. Preferably, the mode of operation of the pump unit is characterized in that in a first operating mode the filling space is filled with fluid, in a second operating mode the pressure in the filling space is kept at least substantially constant, the control valve transmits a first signal to the control unit for the first operating mode, the control valve for the second operating mode transmits a second signal to the control unit, wherein the control unit detects the first or second signal, and controls the electric motor according to the first or second signal. In the second operating mode, the electric motor can be switched off, for example, with a shutdown signal in order to save energy in the accumulator.
In einem dritten Bedienmodus kann Fluid aus dem Füllraum abgelassen werden. Der dritte Bedienmodus ist ebenfalls über das Steuerventil ansteuerbar. Im dritten Bedienmodus kann das Steuerventil ein drittes Signal an die Steuereinheit übermitteln, worauf die Steuereinheit den Elektromotor entsprechend regelt und/oder ausschaltet. Dies hat den Vorteil, dass der Elektromotor nur dann eingeschaltet ist und Energie verbraucht, wenn Fluid zum Druckbefüllen des Füllraums benötigt wird. In a third operating mode, fluid can be drained from the filling space. The third operating mode can also be controlled via the control valve. In the third operating mode, the control valve can transmit a third signal to the control unit, whereupon the control unit controls and / or switches off the electric motor accordingly. This has the advantage that the electric motor is only switched on and consumes energy when fluid is required for pressure filling of the filling space.
Zweckmäßigerweise kann die Druckmesseinrichtung den gemessenen Druck an die Steuereinheit übermitteln, wobei die Steuereinheit die zeitliche Änderung des Druckes erfasst und in Abhängigkeit zur zeitlichen Änderung des Druckes ein Einschalt- und/oder Abschaltsignal an den Elektromotor sendet. Durch die Überwachung des Drucks, kann die Steuereinheit somit beispielsweise vorbereitend den Elektromotor einschalten, noch bevor das unter Druck stehende Fluid am Steuerventil benötigt wird. Conveniently, the pressure measuring device can transmit the measured pressure to the control unit, wherein the control unit detects the change over time of the pressure and transmits a switch-on and / or switch-off signal to the electric motor as a function of the time change of the pressure. By monitoring the pressure, the control unit can thus, for example, preparatory to switch on the electric motor, even before the pressurized fluid is required at the control valve.
Neben der manuellen Betätigbarkeit des Steuerventils kann es alternativ oder ergänzend vorgesehen sein, dass die Steuereinheit das Steuerventil autonom betätigt. Zweckmäßigerweise wird bei Unterschreiten des Druckes unter einen ersten Grenzwert von der Steuereinheit ein Signal für den ersten Bedienmodus an das Steuerventil gesendet. Somit wird bei einem Druckabfall der aufblasbare Füllraum wieder mit Fluid gefüllt, damit der Druck wieder über den ersten Grenzwert steigt. Dieses Verfahren kann beispielsweise dann verwendet werden, wenn der aufblasbare Füllraum über einen langen Zeitraum auf bzw. über einem bestimmten Druck gehalten werden soll, beispielsweise bei Hebekissen, Absperrkissen oder aufblasbaren Zelten. In addition to the manual operability of the control valve, it may alternatively or additionally be provided that the control unit actuates the control valve autonomously. Appropriately, when falling below the pressure under a first signal from the control unit sent a signal for the first operating mode to the control valve. Thus, in the event of a pressure drop, the inflatable filling space is again filled with fluid, so that the pressure again rises above the first limit value. This method can be used, for example, when the inflatable filling space is to be kept at or above a certain pressure for a long period of time, for example lifting bags, closing cushions or inflatable tents.
Bei Erreichen eines Druck-Sollwerts kann von der Steuereinheit vorzugsweise ein Signal für den zweiten Bedienmodus an das Steuerventil gesendet werden. Somit kann der Druck autonom durch die Steuereinheit auf dem Sollwert durch den zweiten Bedienmodus gehalten werden. Ein vorangegangenes Befüllen oder Ablassen des Fluids in oder aus dem aufblasbaren Füllraum wird damit beendet. Zweckmäßigerweise kann bei Überschreiten des Druckes über einen zweiten Grenzwert von der Steuereinheit ein Signal für den dritten Bedienmodus an das Steuerventil gesendet werden. Um einem ungewollten Druckanstieg entgegenzuwirken, wird das Fluid im dritten Bedienmodus aus dem aufblasbaren Füllraum abgelassen. Somit kann eine autonome Überwachung des Überdruckschutzes durch die Steuereinheit erfolgen. When a pressure setpoint is reached, a signal for the second operating mode can preferably be sent to the control valve by the control unit. Thus, the pressure can be autonomously maintained by the control unit at the target value by the second operating mode. A previous filling or discharge of the fluid in or out of the inflatable filling space is thus terminated. Expediently, when the pressure is exceeded by a second limit value, a signal for the third operating mode can be sent to the control valve by the control unit. In order to counteract an undesired increase in pressure, the fluid is discharged from the inflatable filling space in the third operating mode. Thus, an autonomous monitoring of the overpressure protection can be done by the control unit.
Insbesondere bei der Aufrechterhaltung und Überwachung des Fülldrucks über einen längeren Zeitraum kann somit eine Bedienungsperson durch die autonome Regelung des Drucks durch die Steuereinheit entlastet bzw. ersetzt werden. In particular, in the maintenance and monitoring of the inflation pressure over an extended period of time thus an operator can be relieved or replaced by the autonomous regulation of the pressure by the control unit.
Beschreibung der Erfindung anhand von Ausführungsbeispielen Description of the invention with reference to embodiments
Zweckmäßige Ausgestaltungen der vorliegenden Erfindung werden anhand von Zeichnungsfiguren nachstehend näher erläutert. Es zeigen: eine stark vereinfachte schematische Darstellung der Verwendung der Pumpeneinheit beim Befüllen eines Hebekissens für einen Bergungseinsatz; Fig. 2 eine stark vereinfachte schematische Darstellung der Pumpeneinheit mit einem Ventilblock; Fig. 3 eine stark vereinfachte schematische Darstellung der Pumpeneinheit mit zwei Steuerventilen; sowie Advantageous embodiments of the present invention will be explained in more detail below with reference to drawing figures. In the drawing: a greatly simplified schematic diagram of the use of the pump unit when filling a lifting bag for a salvage operation; 2 shows a greatly simplified schematic representation of the pump unit with a valve block; 3 is a greatly simplified schematic representation of the pump unit with two control valves. such as
Fig. 4 einen beispielhaften zeitlichen Verlauf des Druckes an der Druckmesseinrichtung und entsprechende Betriebszustände des Steuer- ventils und des Elektromotors z. B. bei einem automatischen Betrieb. 4 shows an exemplary time profile of the pressure at the pressure measuring device and corresponding operating states of the control valve and the electric motor z. B. in an automatic operation.
In Fig. 1 ist eine tragbare Pumpeneinheit 10 bei einem beispielhaften Bergungseinsatz gezeigt. Die Bedienungsperson kann die tragbare Pumpeneinheit 10 selbstständig mitführen und bedienen. Die Pumpeneinheit 10 ist über den An- schluss 18 mittels eines Fluidschlauches 3 mit einem Hebekissen 2 verbunden. Das Hebekissen 2 ist zwischen Trümmerteile platziert und wird mit einem Fluid, z. B. Druckluft, befüllt, um beispielsweise einen Spalt zwischen den Trümmerteilen zu weiten. Die Bedienungsperson muss eine Geräteinheit in Form der Pum- peneinheit 10 mitführen, welche alle benötigten Komponenten zum Befüllen von aufblasbaren Füllräumen, wie einem Hebekissen, bereits umfasst. Es wird nur eine Fluidschlauchverbindung 3 benötigt, welche sich zwischen der Pumpeneinheit 10 und dem Hebekissen 2 befindet. Eine detailliertere Darstellung der erfindungsgemäßen Pumpeneinheit 10 gemäß Fig. 1 ist in Fig. 2 gezeigt. Die Pumpeneinheit 10 ist mittels eines Fluid- schlauchs 3 mit dem Hebekissen 2 verbunden. Die Pumpeneinheit 10 besitzt zum erleichterten Transport einen Tragrahmen 19, welcher zusätzlich einen Standfuß 22 zum sicheren Absetzen auf dem Boden aufweist. In Fig. 1, a portable pump unit 10 is shown in an exemplary recovery operation. The operator can independently carry and operate the portable pump unit 10. The pump unit 10 is connected via the connection 18 by means of a fluid hose 3 to a lifting bag 2. The lifting bag 2 is placed between debris and is filled with a fluid, e.g. B. compressed air, filled, for example, to widen a gap between the debris. The operator must carry an appliance unit in the form of the pump unit 10, which already contains all the components required to fill inflatable filling spaces, such as a lifting bag. Only one fluid hose connection 3 is needed, which is located between the pump unit 10 and the lifting bag 2. A more detailed illustration of the pump unit 10 according to the invention according to FIG. 1 is shown in FIG. 2. The pump unit 10 is connected to the lifting bag 2 by means of a fluid hose 3. The pump unit 10 has to facilitate transport a support frame 19, which also has a stand 22 for safe settling on the floor.
Die einzelnen Komponenten sind unmittelbar am Tragrahmen 19 untergebracht. So verfügt die Pumpeneinheit 10 über eine Fluidpumpe 12 (z. B. einen Verdichter, insbesondere Kolbenverdichter), um den benötigten Druck zum Befüllen eines aufblasbaren Füllraums, wie hier des Hebekissens 2, bereitzustellen. Die Fluidpumpe 12 wird durch einen Elektromotor 1 1 angetrieben und durch ein Kühlgebläse 14 gekühlt. Der Elektromotor 1 1 und das Kühlgebläse 14 werden wiederum von einem Akkumulator 13 mit Energie gespeist. Zur Ansteuerung des Elektromotors 1 1 umfasst die Pumpeneinheit 10 eine Steuereinheit 17. Die Fluid- pumpe 12 ist zudem mit einem unmittelbar an der Pumpeneinheit 10 angeordneten, manuell bedienbaren Steuerventil 16 verbunden, welches ein kontrolliertes Befüllen des Hebekissens 2 ermöglicht. The individual components are accommodated directly on the support frame 19. Thus, the pump unit 10 has a fluid pump 12 (for example a compressor, in particular piston compressor) in order to provide the required pressure for filling an inflatable filling space, such as here the lifting bag 2. The Fluid pump 12 is driven by an electric motor 1 1 and cooled by a cooling fan 14. The electric motor 1 1 and the cooling fan 14 are in turn fed by an accumulator 13 with energy. To drive the electric motor 1 1, the pump unit 10 comprises a control unit 17. The fluid pump 12 is also connected to a directly on the pump unit 10 arranged, manually operable control valve 16 which allows a controlled filling of the lifting bag 2.
Das Steuerventil 16 ist in einem Ventilblock 23 untergebracht, welcher ebenfalls am Tragrahmen 19 untergebracht ist. Der Ventilblock 23 ist unmittelbar an der Fluidpumpe 12 positioniert. Die Pumpeneinheit 10 verfügt über einen Anschluss 18, um den Fluidschlauch 3 vor Beginn des Einsatzes an der Pumpeneinheit 10 anzuschließen. Der Anschluss 18 steht mit dem Steuerventil 16 in Verbindung. Bei dem Steuerventil 16 handelt es sich vorzugsweise um ein 3/3-Wegeventil, welches in der linken Ventilstellung eine Pumpstellung (Druckaufbau), in der mittigen Ventilstellung eine Bypass-Stellung (kein Druckaufbau, keine Entlastung) sowie in der rechten Ventilstellung eine Entlüftungsstellung (Entlastung) aufweist. Vorzugsweise handelt es sich hierbei um ein sog. Proportionalventil. The control valve 16 is housed in a valve block 23 which is also housed on the support frame 19. The valve block 23 is positioned directly on the fluid pump 12. The pump unit 10 has a port 18 for connecting the fluid hose 3 to the pump unit 10 prior to the start of the deployment. The port 18 communicates with the control valve 16 in connection. The control valve 16 is preferably a 3/3-way valve, which in the left valve position a pumping position (pressure build-up), in the central valve position a bypass position (no pressure build-up, no discharge) and in the right valve position a venting position ( Discharge). This is preferably a so-called proportional valve.
Zwischen dem Steuerventil 16 und dem Anschluss 18 befindet sich am Ventilblock 23 zusätzlich eine Druckmesseinrichtung 24 zur Überwachung und Anzeige des Fülldrucks des Hebekissens 2. Zudem kann, wie in Fig. 2 dargestellt, ein Sicherheitsventil 15 zwischen Fluidpumpe 12 und Steuerventil 16 angeordnet sein. Das Sicherheitsventil 15 kann zweckmäßigerweise ein Druckbegrenzungsventil sein, um die Pumpeneinheit 10 gegen zu hohen Druck abzusichern und Schäden zu vermeiden. Between the control valve 16 and the port 18 is located on the valve block 23 in addition a pressure measuring device 24 for monitoring and displaying the filling pressure of the lifting bag 2. In addition, as shown in Fig. 2, a safety valve 15 between the fluid pump 12 and the control valve 16 may be arranged. The safety valve 15 may conveniently be a pressure relief valve to protect the pump unit 10 against excessive pressure and to avoid damage.
Das Steuerventil 16 ist über eine Signalleitung 20 mit der Steuereinheit 17 ver- bunden. Über die Signalleitung 20 kann beispielsweise der aktuelle Bedienmodus bzw. die aktuelle Stellung des Steuerventils 16 an die Steuereinheit 17 übertragen werden. Die Steuereinheit 17 kann entsprechend den Elektromotor 1 1 ansteuern und je nach Bedarf den Elektromotor 1 1 ein- oder ausschalten bzw. die Leistung des Elektromotors 1 1 regeln. Zusätzlich kann die Druckmesseinrich- tung 24 über eine weitere Signalleitung 21 mit der Steuereinheit 17 verbunden sein. Die Steuereinheit 17 kann beispielsweise den zeitlichen Druckverlauf aufzeichnen. Ferner kann bei Bedarf an der Fluidpumpe 12 ein Kühlgebläse 14 angeordnet sein. Auch dieses kann mit der Steuereinheit 17 über eine Signalleitung verbunden sein. The control valve 16 is connected to the control unit 17 via a signal line 20. For example, the current operating mode or the current position of the control valve 16 can be transmitted to the control unit 17 via the signal line 20. The control unit 17 can accordingly control the electric motor 1 1 and, as required, the electric motor 1 1 on or off or regulate the power of the electric motor 1 1. In addition, the pressure measuring be connected via a further signal line 21 to the control unit 17. The control unit 17 may, for example, record the temporal pressure profile. Further, if necessary, a cooling fan 14 may be disposed on the fluid pump 12. This can also be connected to the control unit 17 via a signal line.
In einer besonderen Ausgestaltung, bei welcher ein autonomer Betrieb der Pum- peneinheit 10 alternativ oder ergänzend zum manuellen Betrieb vorgesehen ist, kann die Steuereinheit 17 Steuersignale an das Steuerventil 16 übertragen. Entsprechend dem Druckverlauf kann die Steuereinheit 17 somit situationsbedingt ein Befüllen, Ablassen oder Halten des Fülldrucks am Steuerventil 16 regeln, um beispielsweise einen Solldruck im aufblasbaren Füllraum, wie z. B. in einem pneumatischen Zelt oder einem Hebekissen für Reparaturen, aufrechtzuerhalten. In a particular embodiment, in which an autonomous operation of the pump unit 10 is provided as an alternative or in addition to the manual operation, the control unit 17 can transmit control signals to the control valve 16. According to the pressure variation, the control unit 17 can thus regulate a filling, deflation or maintenance of the filling pressure on the control valve 16, as a result of the situation, in order, for example, to set a target pressure in the inflatable filling space, such as, for example. In a pneumatic tent or lifting bag for repairs.
In Fig. 3 ist eine weitere Ausgestaltung der Pumpeneinheit 10 mit zwei darin integrierten Steuerventilen 16 gezeigt. Jedes Steuerventil 16 verfügt über einen separaten Anschluss 18. Somit ist es möglich, zwei Hebekissen 2 gleichzeitig mit einer einzigen Pumpeneinheit 10 zu befüllen. Die Pumpeneinheit 10 umfasst weiterhin einen Tragrahmen 19 mit Standfuß 22. Am Tragrahmen 19 sind alle Komponenten untergebracht. Die Fluidpumpe 12, das Kühlgebläse 14, das Sicherheitsventil 15, der Elektromotor 1 1 , der Akkumulator 13 sowie die Steuereinheit 17 sind in einfacher Ausführung vorgesehen. Die Fluidpumpe 12 ist mit beiden Steuerventilen 16 verbunden. Jedes Steuerventil 16 verfügt zudem über eine separate Druckmesseinrichtung 24. Die Steuereinheit 17 ist über die Signalleitungen 20 mit den Steuerventilen 16 verbunden und über die Signalleitungen 21 mit den Druckmesseinrichtungen 24. Die beiden Steuerventile 16 sind in einem gemeinsamen Ventilblock 23 untergebracht, ebenso die beiden Druckmessein- richtungen 24. Der Ventilblock 23 ist unmittelbar an der Fluidpumpe 12 angeordnet bzw. angebracht. FIG. 3 shows a further embodiment of the pump unit 10 with two control valves 16 integrated therein. Each control valve 16 has a separate port 18. Thus, it is possible to simultaneously fill two lifting bags 2 with a single pump unit 10. The pump unit 10 further comprises a support frame 19 with base 22. On the support frame 19, all components are housed. The fluid pump 12, the cooling fan 14, the safety valve 15, the electric motor 1 1, the accumulator 13 and the control unit 17 are provided in a simple design. The fluid pump 12 is connected to both control valves 16. Each control valve 16 also has a separate pressure measuring device 24. The control unit 17 is connected via the signal lines 20 to the control valves 16 and the signal lines 21 to the pressure measuring means 24. The two control valves 16 are housed in a common valve block 23, as well as the two Druckmessein - Directions 24. The valve block 23 is disposed or attached directly to the fluid pump 12.
In Fig. 4 sind ein beispielhafter zeitlicher Verlauf des gemessenen Fülldrucks eines aufblasbaren Füllraums an der Druckmesseinrichtung 24 und die entspre- chenden Betriebszustände des Steuerventils 16 und des Elektromotors 1 1 bei einem automatischen oder halbautomatischen Betrieb dargestellt. In Sektion I fällt der Druck vom Sollwert ab, wobei das Steuerventil 16 auf Halten steht und der Elektromotor 1 1 ausgeschaltet ist. Sobald der Druck unter den 1. Grenzwert fällt, wird das Steuerventil 16 in Sektion II in den ersten Bedienmodus umgeschaltet, um den Füllraum mit Fluid zu befüllen. Der Elektromotor 1 1 wird entsprechend über die Steuereinheit 17 eingeschaltet. Bei Erreichen des Sollwertes an der Druckmesseinrichtung 24 in Sektion III wird das Steuerventil 16 durch die Steuereinheit 17 wieder in den zweiten Bedienmodus zum Halten des Fülldrucks geschalten, wobei der Elektromotor 1 1 ausgeschaltet wird. In Sektion IV wird das Steuerventil 16 analog zu Sektion II in den ersten Bedienmodus umgeschaltet, bevor es in Sektion V von der Steuereinheit 17 ein Signal zum Schalten in den zweiten Bedienmodus zum Halten des Fülldrucks erhält. Für den Fall, dass es trotz des Umschaltens in den zweiten Bedienmodus zu einem weiteren Druckan- stieg an der Druckmesseinrichtung 24 über einen 2. Grenzwert kommt, schaltet die Steuereinheit 17 das Steuerventil 16 in einen dritten Bedienmodus. In Sektion VI befindet sich das Steuerventil 16 im dritten Bedienmodus, um das Fluid aus dem aufblasbaren Füllraum abzulassen, wobei der Elektromotor 1 1 weiterhin ausgeschaltet ist. Bei Erreichen des Sollwertes in Sektion VII wird das Steuer- ventil 16 von der Steuereinheit 17 analog zu Sektionen I und III in den zweiten Bedienmodus zum Halten des Fülldrucks umgeschaltet. Die Ansteuerung des Steuerventils 16 und des Elektromors 1 1 in Sektionen VIII und IX geschieht analog zur Ansteuerung in den Sektionen II und III. FIG. 4 shows an exemplary time profile of the measured filling pressure of an inflatable filling space at the pressure measuring device 24 and the corresponding chenden operating conditions of the control valve 16 and the electric motor 1 1 shown in an automatic or semi-automatic operation. In Section I, the pressure drops from the set point, with the control valve 16 is on hold and the electric motor 1 1 is turned off. As soon as the pressure falls below the first limit, the control valve 16 is switched in section II in the first operating mode to fill the filling space with fluid. The electric motor 1 1 is turned on in accordance with the control unit 17. Upon reaching the target value at the pressure measuring device 24 in section III, the control valve 16 is switched by the control unit 17 back into the second operating mode for holding the filling pressure, wherein the electric motor 1 1 is turned off. In section IV, the control valve 16 is switched to the first operating mode analogously to section II, before it receives a signal for switching to the second operating mode for holding the filling pressure in section V of the control unit 17. In the event that, despite switching to the second operating mode, a further increase in pressure at the pressure measuring device 24 occurs over a second limit value, the control unit 17 switches the control valve 16 into a third operating mode. In section VI, the control valve 16 is in the third operating mode to discharge the fluid from the inflatable filling chamber, wherein the electric motor 1 1 is still switched off. Upon reaching the setpoint in section VII, the control valve 16 is switched by the control unit 17 analogous to sections I and III in the second operating mode for holding the filling pressure. The control of the control valve 16 and the electric motor 1 1 in sections VIII and IX is analogous to the control in sections II and III.
BEZU GSZE IC H E N LISTE CONSISTENT IC H E N LIST
10 Pumpeneinheit 10 pump unit
1 1 Elektromotor  1 1 electric motor
12 Fluidpumpe  12 fluid pump
13 Akkumulator  13 accumulator
14 Kühlgebläse  14 cooling fans
15 Sicherheitsventil 15 safety valve
16 Steuerventil  16 control valve
17 Steuereinheit  17 control unit
18 Anschluss  18 connection
19 Tragrahmen  19 supporting frame
20 Signalleitung 20 signal line
21 Signalleitung  21 signal line
22 Standfuß  22 base
23 Ventilblock  23 valve block
24 Druckmesseinrichtung  24 pressure measuring device
2 Hebekissen 2 lifting bags
3 Fluidschlauch 3 fluid hose

Claims

PAT E N TAN S P R Ü C H E PAT E N TAN S P R O C H E
Von einer Bedienungsperson mitführbare Pumpeneinheit (10) zum Druckbefüllen von aufblasbaren Füllräumen mit einem Fluid, vorzugsweise Druckluft, insbesondere von Hebekissen By an operator entrained pump unit (10) for pressure filling of inflatable filling chambers with a fluid, preferably compressed air, in particular lifting bags
(2), Absperrkissen, Zelten oder dgl., umfassend (2), Absperrkissen, tents or the like., Comprising
eine Fluidpumpe (12),  a fluid pump (12),
einen Elektromotor (1 1 ) zum Antrieb der Fluidpumpe (12), einen Akkumulator (13),  an electric motor (1 1) for driving the fluid pump (12), an accumulator (13),
eine Steuereinheit (17) zur Steuerung des Betriebs der Fluidpumpe, einen Anschluss (18) zum Anschließen eines zum Füllraum führenden Fluidschlauchs  a control unit (17) for controlling the operation of the fluid pump; a connection (18) for connecting a fluid hose leading to the filling space
(3), (3)
dadurch gekennzeichnet, dass  characterized in that
ein an der Pumpeneinheit (10) positioniertes, vorzugsweise manuell betätigbares Steuerventil (16) vorgesehen ist.  a preferably manually operable control valve (16) is provided on the pump unit (10).
Pumpeneinheit (10) nach Anspruch 1 , dadurch gekennzeichnet, dass die tragbare Pumpeneinheit (10) ein Gehäuse oder einen Tragrahmen (19) umfasst und das Steuerventil (16) im oder am Gehäuse oder Tragrahmen (19) untergebracht ist. Pump unit (10) according to claim 1, characterized in that the portable pump unit (10) comprises a housing or a support frame (19) and the control valve (16) is housed in or on the housing or support frame (19).
Pumpeneinheit (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Steuerventil (16) in einem Ventilblock (23) untergebracht oder Bestandteil desselben ist. Pump unit (10) according to claim 1 or 2, characterized in that the control valve (16) in a valve block (23) housed or part thereof.
4. Pumpeneinheit (10) nach Anspruch 3, dadurch gekennzeichnet, dass der Ventilblock (23) an der Fluidpumpe (12) positioniert ist. 4. Pump unit (10) according to claim 3, characterized in that the valve block (23) is positioned on the fluid pump (12).
5. Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Druckmesseinrichtung (24) vorgesehen ist, welche den Fülldruck des aufblasbaren Füllraums misst. 5. Pump unit (10) according to at least one of the preceding claims, characterized in that a pressure measuring device (24) is provided, which measures the filling pressure of the inflatable filling space.
6. Pumpeneinheit (10) nach Anspruch 5, dadurch gekennzeichnet, dass die Druckmesseinrichtung (24) sich zwischen Anschluss (18) und Steuerventil (16) befindet. 6. Pump unit (10) according to claim 5, characterized in that the pressure measuring device (24) is located between the port (18) and the control valve (16).
7. Pumpeneinheit (10) nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Druckmesseinrichtung (24) im Ventilblock (23) untergebracht ist. 7. pump unit (10) according to claim 5 or 6, characterized in that the pressure measuring device (24) in the valve block (23) is housed.
8. Pumpeneinheit (10) nach mindestens einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Druckmesseinrichtung (24) eine Anzeige ausweist. 8. Pump unit (10) according to at least one of claims 5 to 7, characterized in that the pressure measuring device (24) identifies a display.
9. Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Steuerventil (16) mit der Steuereinheit (17) über eine Signalleitung (20) verbunden ist. 9. pump unit (10) according to at least one of the preceding claims, characterized in that the control valve (16) to the control unit (17) via a signal line (20) is connected.
10. Pumpeneinheit (10) nach mindestens einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass die Druckmesseinrichtung (24) mit der Steuereinheit (17) über eine Signalleitung (21 ) verbunden ist. 10. Pump unit (10) according to at least one of claims 5 to 9, characterized in that the pressure measuring device (24) to the control unit (17) via a signal line (21) is connected.
1 1 . Pumpeneinheit (10) nach mindestens einem der vorhergehenden1 1. Pump unit (10) according to at least one of the preceding
Ansprüche, dadurch gekennzeichnet, dass an der Pumpeneinheit (10) mindestens zwei Steuerventile (16) vorgesehen sind, wobei jedes Steuerventil (16) einen Anschluss (18) zum Anschließen eines zu je einem Füllraum führenden Fluidschlauchs (3) aufweist. Claims, characterized in that on the pump unit (10) at least two control valves (16) are provided, wherein each control valve (16) has a connection (18) for connecting a leading to a respective filling chamber fluid hose (3).
12. Pumpeneinheit (10) nach Anspruch 1 1 , dadurch gekennzeichnet, dass für die mindestens zwei Steuerventile (16) eine gemeinsame Fluid- pumpe (12) vorgesehen ist. 12. Pump unit (10) according to claim 1 1, characterized in that for the at least two control valves (16) a common fluid pump (12) is provided.
13. Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es sich bei dem Steuerventil (16) um ein Mehrwegeventil, vorzugsweise um ein 3/3-Wegeventil, handelt. 13. Pump unit (10) according to at least one of the preceding claims, characterized in that it is the control valve (16) is a multi-way valve, preferably a 3/3-way valve, is.
14. Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es sich bei dem Steuerventil (16) um ein Proportionalventil handelt. 14. Pump unit (10) according to at least one of the preceding claims, characterized in that it is the control valve (16) is a proportional valve.
15. Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an der Fluidpumpe (12) ein Kühlgebläse (14) angeordnet ist. 15. Pump unit (10) according to at least one of the preceding claims, characterized in that a cooling fan (14) is arranged on the fluid pump (12).
16. Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Elektromotor (1 1 ) durch Betätigung des Steuerventils (16) steuerbar ist. 16. Pump unit (10) according to at least one of the preceding claims, characterized in that the electric motor (1 1) by actuation of the control valve (16) is controllable.
17. Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass 17. Pump unit (10) according to at least one of the preceding claims, characterized in that
in einem ersten Bedienmodus der Füllraum mit Fluid befüllt wird, in einem zweiten Bedienmodus der Druck im Füllraum zumindest im Wesentlichen konstant gehalten wird, in a first operating mode, the filling space is filled with fluid, in a second operating mode, the pressure in the filling space is kept at least substantially constant,
das Steuerventil (16) für den ersten Bedienmodus ein erstes Signal an die Steuereinheit (17) übermittelt,  the control valve (16) transmits a first signal to the control unit (17) for the first operating mode,
das Steuerventil (16) für den zweiten Bedienmodus ein zweites Signal an die Steuereinheit (17) übermittelt, wobei  the control valve (16) for the second operating mode transmits a second signal to the control unit (17), wherein
die Steuereinheit (17) die Signale erfasst, und entsprechend der Signale den Elektromotor (1 1 ) steuert.  the control unit (17) detects the signals, and according to the signals controls the electric motor (1 1).
Pumpeneinheit (10) nach Anspruch 17, dadurch gekennzeichnet, dass das in einem dritten Bedienmodus Fluid aus dem Füllraum abgelassen wird und das Steuerventil (16) für den dritten Bedienmodus ein drittes Signal an die Steuereinheit (17) übermittelt. Pump unit (10) according to claim 17, characterized in that in a third operating mode fluid is discharged from the filling space and the control valve (16) for the third operating mode transmits a third signal to the control unit (17).
Pumpeneinheit (10) nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinheit (17) die zeitliche Änderung des Druckes erfasst und in Abhängigkeit davon den Elektromotor (1 1 ) regelt und/oder ein- oder ausschaltet. Pump unit (10) according to at least one of the preceding claims, characterized in that the control unit (17) detects the change over time of the pressure and in response regulates the electric motor (1 1) and / or on or off.
EP17735491.7A 2017-07-04 2017-07-04 Portable pump unit Active EP3610153B1 (en)

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CN (1) CN110832201B (en)
DK (1) DK3610153T3 (en)
ES (1) ES2870977T3 (en)
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PL3610153T3 (en) 2021-07-26
EP3610153B1 (en) 2021-02-24
ES2870977T3 (en) 2021-10-28
CN110832201B (en) 2022-02-18
US20200132063A1 (en) 2020-04-30
CN110832201A (en) 2020-02-21
PT3610153T (en) 2021-03-17
DK3610153T3 (en) 2021-05-10
WO2019007480A1 (en) 2019-01-10

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