EP3399116B1 - Method for operating an appliance unit for drying an insulating coating - Google Patents

Method for operating an appliance unit for drying an insulating coating Download PDF

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Publication number
EP3399116B1
EP3399116B1 EP17169117.3A EP17169117A EP3399116B1 EP 3399116 B1 EP3399116 B1 EP 3399116B1 EP 17169117 A EP17169117 A EP 17169117A EP 3399116 B1 EP3399116 B1 EP 3399116B1
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EP
European Patent Office
Prior art keywords
pump
predeterminable
switched
time period
minutes
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.)
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Application number
EP17169117.3A
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German (de)
French (fr)
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EP3399116A1 (en
Inventor
Detlef Von Der Lieck
Frank Dehen
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.)
Trotec GmbH
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Trotec GmbH
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Publication date
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Priority to EP17169117.3A priority Critical patent/EP3399116B1/en
Priority to PL17169117T priority patent/PL3399116T3/en
Publication of EP3399116A1 publication Critical patent/EP3399116A1/en
Application granted granted Critical
Publication of EP3399116B1 publication Critical patent/EP3399116B1/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70Drying or keeping dry, e.g. by air vents
    • E04B1/7069Drying or keeping dry, e.g. by air vents by ventilating
    • E04B1/7092Temporary mechanical ventilation of damp layers, e.g. insulation of a floating floor
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805Parameters or conditions being sensed
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842Suction motors or blowers
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2889Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply

Definitions

  • the invention relates to a method for operating a device unit for insulating layer drying by means of vacuum, in which a naturally aspirated motor is operated in a vacuum chamber to generate a vacuum, and in which water accumulating in the vacuum chamber is pumped out by means of a pump.
  • a generic unit for insulating layer drying by means of vacuum is from the DE 10 2015 005 865 A1 known.
  • Modern building designs provide insulation of the floor, typically an insulation layer being arranged between a sub-floor, for example a cement floor, and an upper floor, for example a screed floor.
  • a sub-floor for example a cement floor
  • an upper floor for example a screed floor.
  • insulation materials can be used to form such an insulation layer, such as polystyrene or glass fabric.
  • two different process variants can be used for insulating layer drying, namely the so-called overpressure process and the so-called vacuum process.
  • overpressure process dry, heated air is blown into the insulation layer through openings specially made for this purpose in the top floor and the intermediate layer, which then accumulate with the moisture from the insulation layer and escape upwards into the room via edge joints and / or relief openings, where it is dried by means of dehumidification units installed in the room.
  • the vacuum process has proven to be more effective. In this method, no air is blown into the space between the underfloor and top floor through openings provided for this purpose, but rather moist air is extracted there.
  • a vacuum pump is provided, for example in the form of a suction motor, which is connected in terms of flow technology via appropriate tubing to existing or prepared openings in the top floor.
  • the moist air drawn off by means of the vacuum pump is typically fed to a water separator in which the water contained in the moist air is separated off.
  • a negative pressure is created in the insulation layer, which is compensated for by the room air trailing through open edge joints and / or relief openings provided for this purpose.
  • Additional dehumidifying devices can be provided to accelerate the drying process, which serve to dry the trailing room air.
  • the generic device according to the DE 10 2015 005 865 A1 is a device for insulating layer drying by means of vacuum, i.e. by means of negative pressure.
  • the device has a lower part on the one hand and an upper part on the other hand, the upper part being carried detachably from the lower part in the fully assembled, ie ready-to-use state.
  • the upper part is arranged on the lower part.
  • the upper part houses in particular the vacuum pump and a device electronics unit.
  • the upper part provides a housing which is divided into two compartments, the first compartment serving as the engine compartment for at least partially accommodating the vacuum pump, whereas the second compartment for accommodating the device electronics unit provides a volume space serving as an electronics compartment.
  • the lower part of the device houses a vacuum chamber in which a water separator is arranged.
  • a vacuum is formed in the vacuum chamber as a result of operation of the vacuum pump, which leads to suction of moist air from the insulation layer which is connected to the device.
  • the water contained in the humid air is separated off at the water separator, which then collects in the vacuum chamber.
  • the water that accumulates in the vacuum chamber during operation is pumped out depending on the fill level.
  • the subdivision into the upper and lower part has the particular advantage that the device electronics unit housed by the upper part is largely moisture-decoupled from the vacuum chamber which absorbs water in the intended use.
  • a suction blower is provided, by means of which moist air can be sucked out of an impact sound insulation layer that has become damp with the interposition of a suction line.
  • a water separator is connected upstream of the suction fan.
  • a drain line is connected to this, in which line a control valve or a pump is arranged.
  • a pump operated by means of an AC motor is also known for use in a deep well.
  • the delivery rate of the pump can be controlled by an appropriately adapted frequency, for which purpose rectifiers and frequency converters are used.
  • the pump Since the pump is typically installed at a depth of up to 100 m, special attention is paid to the US 6,254,353 B1 to avoid possible malfunctions of the pump by a special control of the AC motor can. For this purpose, it is envisaged, among other things, to be able to reverse the direction of rotation of the motor and thus also that of the pump. In this way, any impurities accumulated in the pump, such as rocks and / or the like, should be driven out.
  • the aim is to create a device unit that is as compact as possible for reasons of simplification of handling on the part of the user, and this while at the same time increasing operational reliability. It is therefore the object of the invention to propose a method for operating a generic device unit which allows a compact structure of the device unit and which furthermore contributes to improving the operational safety of the device unit in the intended application.
  • a method of the aforementioned type is proposed with the invention is characterized in, is switched off the pump on reaching a predeterminable for a pump operating first time period in which the pump is switched on again after a predeterminable second time period, wherein when the pump is switched on again, a counter is increased by one counting step, the pump is not switched on again when a predeterminable number of counting steps has been reached, and the periods in which the pump is operated are positive periods and in which the pump is not operated , are recorded as negative time periods and summed up to determine a comparison time period.
  • the vacuum chamber of the device unit fills with water that has been sucked out of the insulation layer to be dried due to negative pressure.
  • a level measuring device is located within the vacuum chamber and detects the level of the water accumulating in the vacuum chamber.
  • the pump is switched on to pump out the water in the vacuum chamber.
  • the pump is switched off until a higher water level is reached again.
  • the pump is in proper operation of the unit therefore typically in a constantly changing operating state from switched on to switched off and vice versa.
  • the operation of the suction motor serving as a vacuum pump is maintained.
  • the vacuum chamber is therefore constantly supplied with water from the insulating layer to be dried.
  • more water can be supplied to the vacuum chamber by means of the suction motor than can be pumped out by the pump.
  • the pump is switched off when a first time period that can be predetermined for pump operation is reached.
  • the pump operation is therefore monitored in such a way that the duration of the pump operation is recorded and the pump is switched off as soon as a predeterminable pump operating duration has been reached. This ensures that overloading of the pump, which negatively influences the operational safety of the device unit, is excluded.
  • the pump initially remains switched off after a previous forced shutdown, specifically for a predeterminable second time period.
  • This second time period serves in particular as a cooling phase for the pump.
  • the user is preferably informed of the cooling status of the pump on this display of the device unit during this second period of time, which serves as the cooling phase.
  • the pump is switched on again, whereby normal operation of the pump is resumed.
  • a counter is increased by one counting step when the pump is switched on again.
  • the counter is preferably used to count the restart of the pump after a previous cooling phase.
  • the number of counting steps recorded therefore corresponds to the number of cooling phases that have been run through or the pump reactivations that followed afterwards.
  • the pump is not switched on again when a predeterminable number of counting steps has been reached.
  • a second security level is provided. After a proper cooling phase, the pump is only switched on again if a predeterminable number of counting steps has not yet been reached. If the pump has been shut down too often during the drying process to cool down, the pump will not be switched on again, even if the previous cooling phase has been properly completed.
  • the method implementation according to the invention therefore provides a total of two protection levels.
  • the pump is switched off as soon as pump operation has been detected for a predeterminable first time period.
  • the pump is then turned off for cooling, with an automatic restart takes place as soon as the pump was switched off for a predeterminable second period of time.
  • the second protection stage of the method implementation according to the invention takes effect when a predeterminable number of repetitions of pump reactivations is reached.
  • a pump would have to be switched on after it had been cooled down, this does not take place if the number of previous pump restartings exceeds a certain value.
  • This two-stage safety concept ensures that the pump is never overloaded. This increases the operational safety of the entire device unit.
  • the implementation of the method according to the invention allows a conceivably small dimensioning of the pump, so that a very compact design of the device unit can be realized.
  • a time period between 5 minutes and 25 minutes, preferably between 10 minutes and 20 minutes, more preferably 15 minutes, is selected as the predeterminable first time period.
  • the time span of the predeterminable first time period is to be selected depending on the dimensioning of the pump. However, it should be selected so that an overload of the pump is safely avoided. However, a first period of 15 minutes is preferred, ie the pump switches off automatically after 15 minutes of pump operation, so that the pump can then be cooled further.
  • the periods in which the pump is operated are recorded as positive periods and in which the pump is not operated as negative periods and summed up to determine a comparison period.
  • the predeterminable first time period is therefore not based on continuous operation of the pump. This takes into account the fact that the pump switches on or off depending on the fill level in the intended use, so that it typically turns on in the intended use the pump is constantly switched on and off.
  • the periods in which the pump is operated are counted as a positive period. In the non-operating case, ie when the pump is switched off, the corresponding time period is evaluated as a negative time period. To determine a comparison time period, these time periods are added up, so that the time periods in which the pump is not operated can also be taken into account as cooling phases that have already taken place. For example, if the pump is operated for an uninterrupted period of 10 minutes and then not operated for 2 minutes, the comparison time is 8 minutes.
  • the comparison time period is compared with the predefinable first time period, the pump being switched off as soon as the comparison time period is equal to or greater than the predefinable first time period. If a pump is operated for 10 minutes, then not operated for 2 minutes and then operated for a further 5 minutes, the comparison time is 13 minutes. This comparison time period is below a first time period, for example 15 minutes, so that when the pump has reached the end of the 5 minute second operating time, there is no forced shutdown. This is because the net pump operating time is 13 minutes and not 15 minutes, since the duration of the pump's non-operation is also taken into account as a negative time period for determining the comparison time period.
  • a time period corresponding to the predeterminable first time period is selected as the predefinable second time period. Also with regard to the second time period to be selected, it must be selected depending on the pump dimensions. However, it is preferred if the cooling time serving as the second time period is selected to be 15 minutes.
  • the suction motor continues to be operated when the pump is switched off until a predeterminable water level is reached in the vacuum chamber and is then switched off. As soon as the pump is switched off, the water discharge from the vacuum chamber ends.
  • the suction motor serving as the vacuum pump can also be switched off when the pump is switched off.
  • the naturally aspirated engine can continue to be operated despite the pump being switched off, namely in Dependence of the water level.
  • the naturally aspirated engine continues to run until a maximum water level is reached. The suction motor is only switched off when this level is reached.
  • the pump is only switched on again if the predeterminable number of counting steps is reached within a predeterminable third time period.
  • the pump is not switched on again when the counter has reached a predeterminable number of counting steps.
  • a restart of the pump is only avoided if the number of predeterminable counting steps has added up within a predeterminable third time period.
  • the pump is switched on again when the time period within which the counter has reached the predeterminable number of counting steps exceeds a certain minimum.
  • the predeterminable third time period is between 3 hours and 5 hours, preferably 4 hours.
  • the pump is repeatedly forcibly switched off and on again within, for example, 4 hours, it is not switched on again if a predetermined number of repeated starts has occurred within these 4 hours. If, however, the specified number of repeated reactivations is reached outside of this time window, the pump may be switched on again. This is because the process interprets that a predeterminable number of permissible reclosures within a period of time that exceeds the predeterminable third period is interpreted to mean that the pump is not overloaded.
  • the pump remains switched off for a predeterminable fourth time period when it is not switched on again. If the pump is not switched on again to protect an overload after a forced shutdown because the test criteria explained above are not met, the pump remains switched off for a predefinable fourth time period. Manual reclosing is also preferably not possible within this period. Operating errors by the user, which could lead to an overload of the pump, are therefore excluded.
  • the counter is reset to zero for a specifiable fifth time period when the pump is not operating.
  • the counter can therefore be reset to zero when the specifiable fifth time period has been reached. It is then possible to operate the pump again in the manner already described, that is to say with the maximum possible number of forced shutdowns and restarting operations.
  • the predeterminable fourth time period and the predeterminable fifth time period are chosen to be of equal size, i.e. the counter of the pump is reset to zero if the pump is not switched on again after a forced shutdown or if the pump is in operation for this period of time due to a lack of pumping time Water was turned off.
  • the Figures 1 and 2 each show a generic device unit 1 for insulating layer drying in a schematic view.
  • the device unit 1 has a lower part 2 on the one hand and an upper part 3 on the other hand in a manner known per se.
  • the upper part 3 is removably arranged on the lower part 2.
  • the lower part 2 houses a vacuum chamber, not shown in the figures. This is accessible to the user from above with the upper part 3 removed.
  • a water separator also not shown in the figures, is arranged within the vacuum chamber. When used as intended, water separates from this water separator, which then collects within the vacuum chamber.
  • a pump is arranged within the vacuum chamber. This pumps out the water that accumulates in the vacuum chamber depending on the fill level. Two levels can be defined, namely a minimum level and a maximum level. If the water level within the vacuum chamber falls below the minimum level, the pump switches off. As soon as a water level is reached which is above the level Min., The pump is switched on so that water is pumped out. If, despite the pump being switched on, a water level which corresponds to the fill level Max. Is reached, a naturally aspirated motor 4 described in more detail below and serving as a vacuum pump switches off.
  • the upper part 3 of the device unit 1 at least partially houses the suction motor 4 serving as a vacuum pump.
  • the suction motor 4 is operated, which leads to the formation of a vacuum within the vacuum chamber.
  • the vacuum chamber is connected to the insulation layer to be dried by means of appropriate tubing, so that moist air is sucked out of the insulation layer during operation.
  • This moist air also called process air, reaches the vacuum chamber as a result of the vacuum, where water is then separated from the moist air at the water separator in the manner described above.
  • the device unit 1 has in the shown Embodiment via three connections 5 and a further connection 6, which is formed laterally.
  • the connections 5 and 6 are used for the fluidic connection of hoses 7 and 8, with three hoses 7 for the process air supply to the connections 5 and a hose 8 for the discharge of process air to the connection 6.
  • the duration of pump operation is recorded. Periods in which the pump is operated are recorded as positive periods and periods in which the pump is not operated are recorded as negative periods. The recorded time periods are added up to determine the pump operating time.
  • the pump operating time corresponds to a first predeterminable time period of, for example, 15 minutes or even exceeds it. If this is not the case, the pump continues to be operated according to method step 102.
  • a comparison of the pump operating time with the predeterminable first results If the predeterminable first time period is exceeded, the pump is switched off at 104. In addition, an internal pump counter is incremented by 105 at 105. In accordance with 106, the display of the device unit clearly shows that the pump is switched off for the purpose of cooling.
  • the pump remains switched off for a predefinable period of time for cooling.
  • This second time period can be, for example, 15 minutes.
  • the predeterminable number of counting steps can be selected with 7, for example.
  • step 111 the user is shown in a display of the device unit 1 that the pump remains switched off and the pump is to be checked.
  • the suction motor 4 serving as a vacuum pump is also switched off according to 113. Otherwise, this can continue to be operated according to 114 until the level check at 111 shows that the naturally aspirated engine 4 is to be switched off.
  • the method implementation according to the invention provides a two-stage security procedure. According to a first safety level, it is provided that the pump is switched off automatically when pump operation of more than 15 minutes has been determined. An automatic restart of the pump takes place only after the cooling time has been set.
  • An automatic restart of the pump does not occur, however, if the pump has been shut down and switched on again too often within a predeterminable time period. For example, it can be provided that the pump is not switched on again, even after cooling has been completed, if it has been switched off seven times within the past 4 hours.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Betrieb einer Geräteeinheit zur Dämmschichttrocknung mittels Vakuum, bei dem ein Saugmotor zur Erzeugung eines Vakuums in einer Vakuumkammer betrieben wird und bei dem sich in der Vakuumkammer ansammelndes Wasser mittels einer Pumpe abgepumpt wird.The invention relates to a method for operating a device unit for insulating layer drying by means of vacuum, in which a naturally aspirated motor is operated in a vacuum chamber to generate a vacuum, and in which water accumulating in the vacuum chamber is pumped out by means of a pump.

Eine gattungsgemäße Geräteeinheit zur Dämmschichttrocknung mittels Vakuum ist aus der DE 10 2015 005 865 A1 bekannt.A generic unit for insulating layer drying by means of vacuum is from the DE 10 2015 005 865 A1 known.

Moderne Gebäudebauweisen sehen eine Dämmung des Fußbodens vor, wobei typischerweise eine Dämmschicht zwischen einem Unterboden, beispielsweise einem Zementboden, und einem Oberboden, beispielsweise einem Estrichboden, angeordnet ist. Zur Ausbildung einer solchen Dämmschicht können unterschiedlichste Dämmmaterialen zum Einsatz kommen, wie zum Beispiel Polystyrol oder Glasgewebe.Modern building designs provide insulation of the floor, typically an insulation layer being arranged between a sub-floor, for example a cement floor, and an upper floor, for example a screed floor. A wide variety of insulation materials can be used to form such an insulation layer, such as polystyrene or glass fabric.

Infolge eines ungewollten Wasseraustritts, beispielsweise durch Rohrbruch, kann es zu einem Wasserschaden dadurch kommen, dass sich Wasser auch im Zwischenraum zwischen Unterboden und Oberboden ansammelt, was zu einer Durchnässung des die Dämmschicht bildenden Dämmmaterials führt. Je nach eingesetztem Dämmmaterial kann es gegebenenfalls sogar zu einem regelrechten Aufsaugen von ausgetretenem Wasser durch das Dämmmaterial kommen.As a result of unwanted water leakage, for example due to a pipe breakage, water damage can occur if water also collects in the space between the sub-floor and the top floor, which leads to a dampening of the insulation material forming the insulation layer. Depending on the insulation material used, there may even be a real absorption of leaked water through the insulation material.

Um einen aufwendigen Rückbau und Wiederaufbau des Fußbodens zur Beseitigung eines solchen Wasserschadens zu vermeiden, ist es aus dem Stand der Technik bekannt, eine Dämmschichttrocknung vorzunehmen, beispielsweise mittels eines Geräts zur Dämmschichttrocknung, wie es aus der DE 10 2015 005 865 A1 bekannt ist.In order to avoid expensive dismantling and reconstruction of the floor to eliminate such water damage, it is known from the prior art to carry out an insulation layer drying, for example by means of a device for insulation layer drying, as is known from the DE 10 2015 005 865 A1 is known.

Grundsätzlich können bei der Dämmschichttrocknung zwei unterschiedliche Verfahrensvarianten zur Anwendung kommen, nämlich zum einen das sogenannte Überdruckverfahren sowie zum anderen das sogenannte Unterdruckverfahren. Beim Überdruckverfahren wird trockene, erwärmte Luft durch speziell hierfür in den Oberboden und die Zwischenschicht eingebrachte Öffnungen in die Dämmschicht eingeblasen, welche sich dann mit der Feuchtigkeit aus der Dämmschicht anreichert und über Randfugen und/oder Entlastungsöffnungen nach oben in den Raum entweicht, wo sie mittels im Raum aufgestellter Entfeuchtungsaggregate getrocknet wird. Als effektiver hat sich jedoch das Unterdruckverfahren herausgestellt. Bei diesem Verfahren wird durch hierfür vorgesehene Öffnungen keine Luft in den Zwischenraum zwischen Unter- und Oberboden eingeblasen, sondern vielmehr dort befindliche feuchte Luft abgesaugt. Zu diesem Zweck ist eine Vakuumpumpe, beispielsweise in der Ausgestaltung eines Saugmotors vorgesehen, die über eine entsprechende Verschlauchung an vorhandene oder hierfür vorbereitete Öffnungen im Oberboden strömungstechnisch angeschlossen ist. Die mittels der Vakuumpumpe abgesaugte feuchte Luft wird typischerweise einem Wasserabscheider zugeführt, in dem das in der feuchten Luft enthaltene Wasser abgeschieden wird. Infolge der Feuchtluftabsaugung entsteht in der Dämmschicht ein Unterdruck, der sich aufgrund nachziehender Raumluft durch geöffnete Randfugen und/oder hierfür vorgesehene Entlastungsöffnungen wieder ausgleicht. Dabei können zur Beschleunigung des Trocknungsvorgangs zusätzliche Entfeuchtungsgeräte vorgesehen sein, die einem Trocknen der nachziehenden Raumluft dienen.Basically, two different process variants can be used for insulating layer drying, namely the so-called overpressure process and the so-called vacuum process. In the overpressure process, dry, heated air is blown into the insulation layer through openings specially made for this purpose in the top floor and the intermediate layer, which then accumulate with the moisture from the insulation layer and escape upwards into the room via edge joints and / or relief openings, where it is dried by means of dehumidification units installed in the room. However, the vacuum process has proven to be more effective. In this method, no air is blown into the space between the underfloor and top floor through openings provided for this purpose, but rather moist air is extracted there. For this purpose, a vacuum pump is provided, for example in the form of a suction motor, which is connected in terms of flow technology via appropriate tubing to existing or prepared openings in the top floor. The moist air drawn off by means of the vacuum pump is typically fed to a water separator in which the water contained in the moist air is separated off. As a result of the extraction of moist air, a negative pressure is created in the insulation layer, which is compensated for by the room air trailing through open edge joints and / or relief openings provided for this purpose. Additional dehumidifying devices can be provided to accelerate the drying process, which serve to dry the trailing room air.

Bei dem gattungsgemäßen Gerät gemäß der DE 10 2015 005 865 A1 handelt es sich um ein Gerät zur Dämmschichttrocknung mittels Vakuum, das heißt mittels Unterdruck. Das Gerät verfügt über ein Unterteil einerseits und ein Oberteil andererseits, wobei das Oberteil im endmontierten, d.h. verwendungsfertigen Zustand vom Unterteil abnehmbar getragen ist. Im bestimmungsgemäßen Anwendungsfall ist das Oberteil auf dem Unterteil angeordnet.In the generic device according to the DE 10 2015 005 865 A1 is a device for insulating layer drying by means of vacuum, i.e. by means of negative pressure. The device has a lower part on the one hand and an upper part on the other hand, the upper part being carried detachably from the lower part in the fully assembled, ie ready-to-use state. In the intended application, the upper part is arranged on the lower part.

Das Oberteil beherbergt insbesondere die Vakuumpumpe sowie eine Geräteelektronikeinheit. Zu diesem Zweck stellt das Oberteil ein Gehäuse bereit, das in zwei Kompartments unterteilt ist, wobei das erste Kompartment als Motorraum der zumindest teilweisen Aufnahme der Vakuumpumpe dient, wohingegen das zweite Kompartment zur Aufnahme der Geräteelektronikeinheit einen als Elektronikraum dienenden Volumenraum bereitstellt.The upper part houses in particular the vacuum pump and a device electronics unit. For this purpose, the upper part provides a housing which is divided into two compartments, the first compartment serving as the engine compartment for at least partially accommodating the vacuum pump, whereas the second compartment for accommodating the device electronics unit provides a volume space serving as an electronics compartment.

Das Geräteunterteil beherbergt eine Vakuumkammer, in der ein Wasserabscheider angeordnet ist. Im bestimmungsgemäßen Verwendungsfall kommt es infolge eines Betriebs der Vakuumpumpe zur Ausbildung eines Vakuums in der Vakuumkammer, was zu einem Ansaugen von Feuchtluft aus der mit dem Gerät verschlauchten Dämmschicht führt. Am Wasserabscheider wird das in der feuchten Luft enthaltene Wasser abgeschieden, welches sich dann in der Vakuumkammer ansammelt.The lower part of the device houses a vacuum chamber in which a water separator is arranged. In the intended use, a vacuum is formed in the vacuum chamber as a result of operation of the vacuum pump, which leads to suction of moist air from the insulation layer which is connected to the device. The water contained in the humid air is separated off at the water separator, which then collects in the vacuum chamber.

Mittels einer in der Vakuumkammer angeordneten Pumpe wird das sich im Betriebsfall in der Vakuumkammer ansammelnde Wasser füllstandsabhängig abgepumpt.By means of a pump arranged in the vacuum chamber, the water that accumulates in the vacuum chamber during operation is pumped out depending on the fill level.

Die Unterteilung in Ober- und Unterteil erbringt insbesondere den Vorteil, dass die vom Oberteil beherbergte Geräteelektronikeinheit weitestgehend feuchteentkoppelt von der im bestimmungsgemäßen Verwendungsfall wasseraufnehmenden Vakuumkammer ausgebildet ist.The subdivision into the upper and lower part has the particular advantage that the device electronics unit housed by the upper part is largely moisture-decoupled from the vacuum chamber which absorbs water in the intended use.

Aus dem Stand der Technik ist gemäß der gattungsgemäßen EP 0 147 216 A1 ferner ein Verfahren sowie eine Anlage zum Austrocknen von feucht gewordenen Isolierschichten bekannt geworden. Es ist zu diesem Zweck ein Sauggebläse vorgesehen, mittels dem unter Zwischenschaltung einer Saugleitung feuchte Luft aus einer feucht gewordenen Trittschalldämmschicht abgesaugt werden kann. Dem Sauggebläse ist ein Wasserabscheider vorgeschaltet. An diesen ist eine Ablassleitung angeschlossen, in welcher Leitung ein Steuerventil oder eine Pumpe angeordnet ist.From the prior art is according to the generic EP 0 147 216 A1 furthermore, a method and a plant for drying out dampened insulating layers have become known. For this purpose, a suction blower is provided, by means of which moist air can be sucked out of an impact sound insulation layer that has become damp with the interposition of a suction line. A water separator is connected upstream of the suction fan. A drain line is connected to this, in which line a control valve or a pump is arranged.

Wird mittels eines im Wasserabscheider angeordneten Füllstandsfühlers in EP 0 247 216 A1 eine bestimmte Füllstandshöhe detektiert, so wird das Steuerventil geöffnet bzw. die alternativ anstelle eines Steuerventils vorgesehene Pumpe eingeschaltet. Mittels eines Impulszählers wird die Anzahl der Schaltungen des Ventils bzw. des Pumpenmotors gezählt. Da das Öffnen des Ventils bzw. die Schaltung der Pumpe zeitgeschaltet erfolgt, entspricht jede Schaltung der Entnahme einer bestimmten Wassermenge aus dem Wasserabscheider. Die Anzahl der Impulse ist mithin ein Maß für die aus der Trittschalldämmung entfernte Wassermenge, was einen Rückschluss darauf zulässt, ob ein Baumangel gegeben ist oder nicht.Is installed in a level sensor in the water separator EP 0 247 216 A1 If a certain fill level is detected, the control valve is opened or the pump which is provided instead of a control valve is switched on. The number of switchings of the valve or the pump motor is counted by means of a pulse counter. Since the opening of the valve or the switching of the pump is timed, each switching corresponds to the removal of a certain amount of water from the water separator. The number of impulses is therefore a measure of the amount of water removed from the impact sound insulation, which allows a conclusion to be drawn as to whether there is a building shortage or not.

Aus der US 6,254,353 B1 ist des Weiteren eine mittels eines Wechselstrommotors betriebene Pumpe zur Verwendung in einem Tiefbrunnen bekannt. Die Förderleistung der Pumpe ist durch eine entsprechend angepasste Frequenz steuerbar, zu welchem Zweck Gleich- und Frequenzumrichter zum Einsatz kommen.From the US 6,254,353 B1 a pump operated by means of an AC motor is also known for use in a deep well. The delivery rate of the pump can be controlled by an appropriately adapted frequency, for which purpose rectifiers and frequency converters are used.

Da die Pumpe typischerweise in einer Tiefe von bis zu 100 m installiert ist, liegt ein besonderes Augenmerk nach der US 6,254,353 B1 darauf, etwaige Fehlfunktionen der Pumpe durch eine besondere Ansteuerung des Wechselstrommotors vermeiden zu können. Zu diesem Zweck ist unter anderem vorgesehen, die Drehrichtung des Motors und damit auch die der Pumpe umkehren zu können. Damit sollen etwaige in der Pumpe angesammelte Verunreinigungen wie zum Beispiels Gesteinsbrocken und/oder dergleichen ausgetrieben werden können.Since the pump is typically installed at a depth of up to 100 m, special attention is paid to the US 6,254,353 B1 to avoid possible malfunctions of the pump by a special control of the AC motor can. For this purpose, it is envisaged, among other things, to be able to reverse the direction of rotation of the motor and thus also that of the pump. In this way, any impurities accumulated in the pump, such as rocks and / or the like, should be driven out.

Obgleich sich eine Geräteeinheit der vorbeschriebenen Art im alltäglichen Prasixeinsatz bewährt hat, besteht Verbesserungsbedarf. Es ist insbesondere angestrebt, aus Gründen der verwenderseitigen Handhabungsvereinfachung eine möglichst kompakte Geräteeinheit zu schaffen und dies bei gleichzeitiger Steigerung der Betriebssicherheit. Es ist deshalb die Aufgabe der Erfindung, ein Verfahren zum Betrieb einer gattungsgemäßen Geräteeinheit vorzuschlagen, das einen kompakten Aufbau der Geräteeinheit gestattet und das darüber hinaus dazu beiträgt, die Betriebssicherheit der Geräteeinheit im bestimmungsgemäßen Anwendungsfall zu verbessern.Although a device unit of the type described has proven itself in everyday prasix use, there is room for improvement. In particular, the aim is to create a device unit that is as compact as possible for reasons of simplification of handling on the part of the user, and this while at the same time increasing operational reliability. It is therefore the object of the invention to propose a method for operating a generic device unit which allows a compact structure of the device unit and which furthermore contributes to improving the operational safety of the device unit in the intended application.

Zur Lösung dieser Aufgabe wird mit der Erfindung ein Verfahren der eingangs genannten Art vorgeschlagen, das sich dadurch auszeichnet, dass die Pumpe mit Erreichen einer für einen Pumpenbetrieb vorgebbaren ersten Zeitdauer abgeschaltet wird, bei dem die Pumpe nach Ablauf einer vorgebbaren zweiten Zeitdauer wieder eingeschaltet wird, wobei mit einem Wiedereinschalten der Pumpe ein Zähler um einen Zählschritt erhöht wird, wobei mit Erreichen einer vorgebbaren Anzahl an Zählschritten ein Wiedereinschalten der Pumpe unterbleibt, und wobei die Zeitspannen, in denen die Pumpe betrieben wird, als positive Zeitspannen und in denen die Pumpe nicht betrieben, als negative Zeitspannen erfasst und zur Bestimmung einer Vergleichszeitdauer aufsummiert werden.To achieve this object a method of the aforementioned type is proposed with the invention is characterized in, is switched off the pump on reaching a predeterminable for a pump operating first time period in which the pump is switched on again after a predeterminable second time period, wherein when the pump is switched on again, a counter is increased by one counting step, the pump is not switched on again when a predeterminable number of counting steps has been reached, and the periods in which the pump is operated are positive periods and in which the pump is not operated , are recorded as negative time periods and summed up to determine a comparison time period.

Im bestimmungsgemäßen Verwendungsfall füllt sich die Vakuumkammer der Geräteeinheit mit Wasser, das unterdruckbedingt aus der zu trocknenden Dämmschicht abgesaugt wurde. Innerhalb der Vakuumkammer befindet sich eine Füllstandsmesseinrichtung, die den Füllstand des sich in der Vakuumkammer ansammelnden Wassers detektiert. Mit Erreichen eines vorgebbaren Wasser-Füllstandes innerhalb der Vakuumkammer wird die Pumpe zum Abpumpen des sich in der Vakuumkammer befindlichen Wassers eingeschaltet. Sobald infolge des Abpumpens der Wasser-Füllstand innerhalb der Vakuumkammer unter einen vorgebbaren Grenzwert fällt, wird die Pumpe bis zum neuerlichen Erreichen eines höheren Wasser-Füllstandes abgeschaltet. Im bestimmungsgemäßen Betrieb der Geräteeinheit befindet sich die Pumpe mithin typischerweise in einem sich stets wechselnden Betriebszustand von eingeschaltet zu ausgeschaltet und umgekehrt.When used as intended, the vacuum chamber of the device unit fills with water that has been sucked out of the insulation layer to be dried due to negative pressure. A level measuring device is located within the vacuum chamber and detects the level of the water accumulating in the vacuum chamber. When a predeterminable water level is reached within the vacuum chamber, the pump is switched on to pump out the water in the vacuum chamber. As soon as the water level in the vacuum chamber falls below a predefinable limit as a result of the pumping, the pump is switched off until a higher water level is reached again. The pump is in proper operation of the unit therefore typically in a constantly changing operating state from switched on to switched off and vice versa.

Während eines Pumpenbetriebs wird der Betrieb des als Vakuumpumpe dienenden Saugmotors aufrechterhalten. Der Vakuumkammer wird mithin stetig Wasser aus der zu trocknenden Dämmschicht zugeführt. Dies kann insbesondere zu Beginn einer Trocknungsmaßnahme, das heißt zu einem Zeitpunkt, zu dem sich noch sehr viel Wasser innerhalb der zu trocknenden Dämmschicht befindet, dazu führen, dass der Vakuumkammer mittels des Saugmotors mehr Wasser zugeführt wird, als durch die Pumpe abgepumpt werden kann.During a pump operation, the operation of the suction motor serving as a vacuum pump is maintained. The vacuum chamber is therefore constantly supplied with water from the insulating layer to be dried. In particular, at the beginning of a drying measure, i.e. at a time when there is still a lot of water within the insulation layer to be dried, more water can be supplied to the vacuum chamber by means of the suction motor than can be pumped out by the pump.

Um diesem Problem zu begegnen, ist es aus dem Stand der Technik bekannt, die Pumpe entsprechend zu dimensionieren, was aber in nachteiliger Weise zu einer der eigentlich angestrebten kompakten Bauform der Geräteeinheit zuwiderlaufenden Größenausgestaltung der Pumpe führt. Zudem führt ein Dauerbetrieb der Pumpe zu einem Ausfallrisiko der gesamten Geräteeinheit, was die Betriebssicherheit in nachteiliger Weise beeinflusst.In order to counter this problem, it is known from the prior art to dimension the pump accordingly, but this disadvantageously leads to a size configuration of the pump which runs counter to the compact design of the device unit that is actually desired. In addition, continuous operation of the pump leads to a risk of failure of the entire device unit, which adversely affects operational safety.

Um hier Abhilfe zu schaffen, wird mit der erfindungsgemäßen Verfahrensdurchführung vorgeschlagen, dass die Pumpe mit Erreichen einer für einen Pumpenbetrieb vorgebbaren ersten Zeitdauer abgeschaltet wird. Verfahrensseitig wird also der Pumpenbetrieb dahingehend überwacht, dass die Zeitdauer des Pumpenbetriebs erfasst und die Pumpe abgeschaltet wird, sobald eine vorgebbare Pumpenbetriebszeitdauer erreicht ist. Damit ist sichergestellt, dass eine die Betriebssicherheit der Geräteeinheit negativ beeinflussende Überlastung der Pumpe ausgeschlossen ist.To remedy this, it is proposed with the implementation of the method according to the invention that the pump is switched off when a first time period that can be predetermined for pump operation is reached. In terms of the method, the pump operation is therefore monitored in such a way that the duration of the pump operation is recorded and the pump is switched off as soon as a predeterminable pump operating duration has been reached. This ensures that overloading of the pump, which negatively influences the operational safety of the device unit, is excluded.

Die Gefahr einer Pumpenüberlastung besteht typischerweise insbesondere zu Beginn einer Trocknungsmaßnahme. Aus dem Stand der Technik vorbekannte Geräteeinheiten sind hinsichtlich ihrer Pumpe deshalb darauf ausgelegt, die zu Beginn einer Trocknungsmaßnahme anfallende Wassermenge ordnungsgemäße abpumpen zu können. Die erfindungsgemäße Verfahrensdurchführung gestattet es nun, die Pumpe in ihrer Dimensionierung auf eine solche Wassermenge auszulegen, wie sie im weiteren Gang einer Trocknungsmaßnahme typischerweise anfällt, denn wird die Pumpe dank der erfindungsgemäßen Verfahrensdurchführung vor einer Überlast zu Beginn einer Trocknungsmaßnahme durch Abschalten geschützt. Die erfindungsgemäße Verfahrensdurchführung gestattet es mithin, die Pumpe sehr viel kleiner als aus dem Stand der Technik bekannt zu dimensionieren, was geräteseitig den Vorteil mit sich bringt, die Geräteeinheit sehr viel kompakter und damit anwendungsfreundlicher auszubilden.There is typically a risk of pump overload, particularly at the start of a drying measure. With regard to their pumps, unit units previously known from the prior art are therefore designed to be able to properly pump off the amount of water which arises at the start of a drying measure. The implementation of the method according to the invention now allows the pump to be dimensioned for such an amount of water as is typically obtained in the further course of a drying measure, because the method according to the invention prevents the pump from becoming overloaded at the beginning of an Drying measure protected by switching off. The implementation of the method according to the invention thus allows the pump to be dimensioned much smaller than is known from the prior art, which has the advantage on the device side of making the device unit much more compact and thus more user-friendly.

Verfahrensseitig ist des Weiteren vorgesehen, dass die Pumpe nach einer vorangegangenen Zwangsabschaltung zunächst ausgeschaltet bleibt, und zwar für eine vorgebbare zweite Zeitdauer. Diese zweite Zeitdauer dient insbesondere als Abkühlphase für die Pumpe. Dem Verwender wird bevorzugterweise während dieser als Abkühlphase dienenden zweiten Zeitdauer über ein Display der Geräteeinheit der Abkühlstatus der Pumpe mitgeteilt. Nach Ablauf der vorgebbaren zweiten Zeitdauer wird die Pumpe wieder eingeschaltet, womit ein bestimmungsgemäßer Betrieb der Pumpe wiederaufgenommen wird.In terms of the method, it is further provided that the pump initially remains switched off after a previous forced shutdown, specifically for a predeterminable second time period. This second time period serves in particular as a cooling phase for the pump. The user is preferably informed of the cooling status of the pump on this display of the device unit during this second period of time, which serves as the cooling phase. After the predeterminable second period of time has elapsed, the pump is switched on again, whereby normal operation of the pump is resumed.

Erfindungsgemäß ist in diesem Zusammenhang vorgesehen, dass mit einem Wiedereinschalten der Pumpe ein Zähler um einen Zählschritt erhöht wird. Dabei wird mittels des Zählers bevorzugterweise das Wiedereinschalten der Pumpe nach einer vorangegangenen Abkühlphase gezählt. Die Anzahl der erfassten Zählschritte entspricht mithin der Anzahl der durchlaufenen Abkühlphasen beziehungsweise der im Anschluss jeweils daran erfolgten Wiedereinschaltungen der Pumpe.According to the invention, it is provided in this connection that a counter is increased by one counting step when the pump is switched on again. The counter is preferably used to count the restart of the pump after a previous cooling phase. The number of counting steps recorded therefore corresponds to the number of cooling phases that have been run through or the pump reactivations that followed afterwards.

Erfindungsgemäß ist vorgesehen, dass mit Erreichen einer vorgebbaren Anzahl an Zählschritten ein Wiedereinschalten der Pumpe unterbleibt. Gemäß diesem Verfahrensschritt ist eine zweite Sicherheitsstufe vorgesehen. Denn nach einer bestimmungsgemäß erfolgten Abkühlphase erfolgt ein Wiedereinschalten der Pumpe nur dann, wenn eine vorgebbare Anzahl an Zählschritten noch nicht erreicht ist. Ist die Pumpe also während der laufenden Trocknungsmaßnahme zu häufig zwecks Abkühlung zwangsabgeschaltet worden, so unterbleibt ein Wiedereinschalten der Pumpe, auch wenn die zuvor durchlaufende Abkühlphase ordnungsgemäße beendet wurde.According to the invention, the pump is not switched on again when a predeterminable number of counting steps has been reached. According to this method step, a second security level is provided. After a proper cooling phase, the pump is only switched on again if a predeterminable number of counting steps has not yet been reached. If the pump has been shut down too often during the drying process to cool down, the pump will not be switched on again, even if the previous cooling phase has been properly completed.

Die erfindungsgemäße Verfahrensdurchführung sieht mithin insgesamt zwei Schutzstufen vor. Gemäß erster Schutzstufe findet ein Abschalten der Pumpe statt, sobald ein Pumpenbetrieb für eine vorgebbare erste Zeitdauer detektiert worden ist. Die Pumpe wird dann zwecks Abkühlung abgeschaltet, wobei eine automatische Wiedereinschaltung erfolgt, sobald die Pumpe für eine vorgebbare zweite Zeitdauer abgeschaltet war.The method implementation according to the invention therefore provides a total of two protection levels. According to the first protection level, the pump is switched off as soon as pump operation has been detected for a predeterminable first time period. The pump is then turned off for cooling, with an automatic restart takes place as soon as the pump was switched off for a predeterminable second period of time.

Sollte sich die Zwangsabschaltung der Pumpe zwecks Abkühlung wiederholen, so greift die zweite Schutzstufe der erfindungsgemäßen Verfahrensdurchführung mit Erreichen einer vorgebbaren Wiederholanzahl an Pumpenwiedereinschaltungen. Obwohl also nach Durchlaufen einer Abkühlung eine Pumpeneinschaltung vorzunehmen wäre, unterbleibt diese, falls die Anzahl der vorangegangenen Pumpenwiedereinschaltungen einen bestimmten Wert übersteigt.If the forced shutdown of the pump is repeated for the purpose of cooling, the second protection stage of the method implementation according to the invention takes effect when a predeterminable number of repetitions of pump reactivations is reached. Thus, although a pump would have to be switched on after it had been cooled down, this does not take place if the number of previous pump restartings exceeds a certain value.

Dieses zweistufige Sicherheitskonzept stellt sicher, dass eine Überlastung der Pumpe in jedem Fall vermieden ist. Dies steigert die Betriebssicherheit der gesamten Geräteeinheit. Darüber hinaus erlaubt die erfindungsgemäße Verfahrensdurchführung eine denkbar klein ausgelegte Dimensionierung der Pumpe, so dass eine sehr kompakte Bauform der Geräteeinheit realisiert werden kann.This two-stage safety concept ensures that the pump is never overloaded. This increases the operational safety of the entire device unit. In addition, the implementation of the method according to the invention allows a conceivably small dimensioning of the pump, so that a very compact design of the device unit can be realized.

Es ist gemäß einem weiteren Merkmal der Erfindung vorgesehen, dass als vorgebbare erste Zeitdauer eine Zeitspanne zwischen 5 Minuten und 25 Minuten, vorzugsweise zwischen 10 Minuten und 20 Minuten, noch mehr bevorzugt von 15 Minuten gewählt wird. Die Zeitspanne der vorgebbaren ersten Zeitdauer ist in Abhängigkeit der Dimensionierung der Pumpe zu wählen. Sie sollte indes so gewählt werden, dass eine Überlast der Pumpe sicher vermieden ist. Bevorzugt ist indes eine erste Zeitdauer von 15 Minuten, das heißt die Pumpe schaltet nach einem 15 Minuten dauernden Pumpenbetrieb automatisch ab, so dass dann im Weiteren eine Abkühlung der Pumpe erfolgen kann.According to a further feature of the invention, a time period between 5 minutes and 25 minutes, preferably between 10 minutes and 20 minutes, more preferably 15 minutes, is selected as the predeterminable first time period. The time span of the predeterminable first time period is to be selected depending on the dimensioning of the pump. However, it should be selected so that an overload of the pump is safely avoided. However, a first period of 15 minutes is preferred, ie the pump switches off automatically after 15 minutes of pump operation, so that the pump can then be cooled further.

Erfindungsgemäß ist vorgesehen, dass die Zeitspannen, in denen die Pumpe betrieben wird, als positive Zeitspanne und in denen die Pumpe nicht betrieben wird, als negative Zeitspannen erfasst und zur Bestimmung einer Vergleichszeitdauer aufsummiert werden.According to the invention, the periods in which the pump is operated are recorded as positive periods and in which the pump is not operated as negative periods and summed up to determine a comparison period.

Die vorgebbare erste Zeitdauer stellt mithin nicht auf einen Dauerbetrieb der Pumpe ab. Es wird damit dem Umstand Rechnung getragen, dass die Pumpe im bestimmungsgemäßen Verwendungsfall füllstandsabhängig ein- beziehungsweise ausschaltet, so dass es im bestimmungsgemäßen Verwendungsfall typischerweise zu einem ständigen Ein- und Ausschalten der Pumpe kommt. Dabei werden die Zeitspannen, in denen die Pumpe betrieben wird, als positive Zeitspanne gewertet. Im Nicht-Betriebsfall, wenn also die Pumpe ausgeschaltet ist, wird die entsprechende Zeitspanne als Negativ-Zeitspanne gewertet. Zur Bestimmung einer Vergleichszeitdauer werden diese Zeitspannen aufsummiert, so dass die Zeitspannen, in denen die Pumpe nicht betrieben wird, als bereits erfolgte Abkühlphasen mitberücksichtigt werden können. Wird die Pumpe beispielsweise für eine ununterbrochene Zeitdauer von 10 Minuten betrieben und alsdann für 2 Minuten nicht betrieben, so ergibt sich eine Vergleichszeitdauer von 8 Minuten.The predeterminable first time period is therefore not based on continuous operation of the pump. This takes into account the fact that the pump switches on or off depending on the fill level in the intended use, so that it typically turns on in the intended use the pump is constantly switched on and off. The periods in which the pump is operated are counted as a positive period. In the non-operating case, ie when the pump is switched off, the corresponding time period is evaluated as a negative time period. To determine a comparison time period, these time periods are added up, so that the time periods in which the pump is not operated can also be taken into account as cooling phases that have already taken place. For example, if the pump is operated for an uninterrupted period of 10 minutes and then not operated for 2 minutes, the comparison time is 8 minutes.

Die Vergleichszeitdauer wird gemäß einem weiteren Merkmal der Erfindung mit der vorgebbaren ersten Zeitdauer verglichen, wobei ein Abschalten der Pumpe erfolgt, sobald die Vergleichszeitdauer gleich oder größer der vorgebbaren ersten Zeitdauer ist. Wenn also eine Pumpe für 10 Minuten betrieben, alsdann für 2 Minuten nicht betrieben und alsdann für weitere 5 Minuten betrieben wird, so ergibt sich eine Vergleichszeitdauer von 13 Minuten. Diese Vergleichszeitdauer liegt unterhalb einer mit beispielsweise 15 Minuten vorgegebenen ersten Zeitdauer, so dass mit Erreichen des Endes der 5 minütigen zweiten Betriebsdauer der Pumpe noch keine Zwangsabschaltung erfolgt. Denn die Netto-Pumpenbetriebsdauer beträgt 13 Minuten und nicht 15 Minuten, da die Dauer des Pumpen-Nichtbetriebs als negative Zeitspanne zur Bestimmung der Vergleichszeitdauer mitberücksichtigt wird.According to a further feature of the invention, the comparison time period is compared with the predefinable first time period, the pump being switched off as soon as the comparison time period is equal to or greater than the predefinable first time period. If a pump is operated for 10 minutes, then not operated for 2 minutes and then operated for a further 5 minutes, the comparison time is 13 minutes. This comparison time period is below a first time period, for example 15 minutes, so that when the pump has reached the end of the 5 minute second operating time, there is no forced shutdown. This is because the net pump operating time is 13 minutes and not 15 minutes, since the duration of the pump's non-operation is also taken into account as a negative time period for determining the comparison time period.

Gemäß einem weiteren Merkmal der Erfindung ist vorgesehen, dass als vorgebbare zweite Zeitdauer eine Zeitspanne in Entsprechung der vorgebbaren ersten Zeitdauer gewählt wird. Auch bezüglich der zu wählenden zweiten Zeitdauer gilt, dass diese in Abhängigkeit der Pumpendimensionierung zu wählen ist. Bevorzugt ist es indes, wenn die als zweite Zeitdauer dienende Abkühldauer mit 15 Minuten gewählt wird.According to a further feature of the invention, it is provided that a time period corresponding to the predeterminable first time period is selected as the predefinable second time period. Also with regard to the second time period to be selected, it must be selected depending on the pump dimensions. However, it is preferred if the cooling time serving as the second time period is selected to be 15 minutes.

Gemäß einem weiteren Merkmal der Erfindung ist vorgesehen, dass der Saugmotor bei abgeschalteter Pumpe bis zum Erreichen eines vorgebbaren Wasser-Füllstandes in der Vakuumkammer weiterbetrieben und dann abgeschaltet wird. Sobald die Pumpe abgeschaltet wird, endet die Wasserabführung aus der Vakuumkammer. Um ein Überlaufen der Vakuumkammer zu vermeiden, kann mit Abschalten der Pumpe auch ein Abschalten des als Vakuumpumpe dienenden Saugmotors vorgesehen sein. Alternativ kann der Saugmotor trotz abgeschalteter Pumpe weiterbetrieben werden, und zwar in Abhängigkeit des Wasser-Füllstandes. So kann insbesondere vorgesehen sein, den Saugmotor weiterlaufen zu lassen, bis ein Wasser-Maximatfüllstand erreicht ist. Erst wenn dieser Füllstand erreicht ist, erfolgt auch eine Abschaltung des Saugmotors.According to a further feature of the invention, it is provided that the suction motor continues to be operated when the pump is switched off until a predeterminable water level is reached in the vacuum chamber and is then switched off. As soon as the pump is switched off, the water discharge from the vacuum chamber ends. In order to prevent the vacuum chamber from overflowing, the suction motor serving as the vacuum pump can also be switched off when the pump is switched off. Alternatively, the naturally aspirated engine can continue to be operated despite the pump being switched off, namely in Dependence of the water level. In particular, it can be provided that the naturally aspirated engine continues to run until a maximum water level is reached. The suction motor is only switched off when this level is reached.

Gemäß einem weiteren Merkmal der Erfindung ist vorgesehen, dass ein Wiedereinschalten der Pumpe nur dann unterbleibt, wenn die vorgebbare Anzahl an Zählschritten innerhalb einer vorgebbaren dritten Zeitdauer erreicht wird.According to a further feature of the invention, it is provided that the pump is only switched on again if the predeterminable number of counting steps is reached within a predeterminable third time period.

Gemäß der vorbeschriebenen zweiten Sicherheitsstufe unterbleibt ein Wiedereinschalten der Pumpe dann, wenn der Zähler eine vorgebbare Anzahl an Zählschritten erreicht hat. Gemäß dem vorstehenden Vorschlag der Erfindung ist nun vorgesehen, dass ein solches Wiedereinschalten der Pumpe nur dann unterbleibt, wenn sich die Anzahl an vorgebbaren Zählschritten innerhalb einer vorgebbaren dritten Zeitdauer aufsummiert hat. Trotz Erreichen der vorgebbaren Anzahl an Zählschritten erfolgt mithin eine Wiedereinschaltung der Pumpe dann, wenn die Zeitdauer, innerhalb welcher der Zähler die vorgebbare Anzahl an Zählschritten erreicht hat, ein bestimmtes Mindestmaß übersteigt. So kann beispielsweise gemäß einem weiteren Merkmal der Erfindung vorgesehen sein, dass die vorgebbare dritte Zeitdauer zwischen 3 Stunden und 5 Stunden, vorzugsweise 4 Stunden beträgt. Wird die Pumpe also innerhalb von beispielsweise 4 Stunden wiederholt zwangsabgeschaltet und wiedereingeschaltet, so unterbleibt ein Wiedereinschalten, wenn eine vorbestimmte Anzahl an wiederholten Einschaltungen innerhalb dieser 4 Stunden erfolgt ist. Kommt es indes außerhalb dieses Zeitfensters zur Erreichung der vorgebbaren Anzahl an wiederholten Wiedereinschaltungen, so ist ein wiederholtes Einschalten der Pumpe zulässig. Denn das Erreichen einer vorgebbaren Anzahl an zulässigen Wiedereinschaltungen innerhalb eines Zeitraums, der die vorgebbare dritte Zeitdauer übersteigt, wird verfahrensseitig dahingehend interpretiert, dass eine Überlastung der Pumpe nicht vorliegt.According to the previously described second security level, the pump is not switched on again when the counter has reached a predeterminable number of counting steps. According to the above proposal of the invention, it is now provided that such a restart of the pump is only avoided if the number of predeterminable counting steps has added up within a predeterminable third time period. In spite of reaching the predeterminable number of counting steps, the pump is switched on again when the time period within which the counter has reached the predeterminable number of counting steps exceeds a certain minimum. For example, it can be provided according to a further feature of the invention that the predeterminable third time period is between 3 hours and 5 hours, preferably 4 hours. If the pump is repeatedly forcibly switched off and on again within, for example, 4 hours, it is not switched on again if a predetermined number of repeated starts has occurred within these 4 hours. If, however, the specified number of repeated reactivations is reached outside of this time window, the pump may be switched on again. This is because the process interprets that a predeterminable number of permissible reclosures within a period of time that exceeds the predeterminable third period is interpreted to mean that the pump is not overloaded.

Gemäß einem weiteren Merkmal der Erfindung ist vorgesehen, dass als vorgebbare Anzahl an Zählschritten 5 bis 9 Schritte, vorzugsweise 6 bis 8 Schritte, mehr bevorzugt 7 Schritte gewählt wird. Die Anzahl der vorzugebenden Zählschritte richtet sich insbesondere nach der Dimensionierung der Pumpe und kann insoweit angemessen gewählt werden.According to a further feature of the invention, it is provided that 5 to 9 steps, preferably 6 to 8 steps, more preferably 7 steps, are selected as the predeterminable number of counting steps. The number of counting steps to be specified depends in particular on the dimensioning of the pump and can be chosen appropriately.

Gemäß einem weiteren Merkmal der Erfindung ist vorgesehen, dass die Pumpe bei einem Nicht-Wiedereinschalten für eine vorgebbare vierte Zeitdauer ausgeschaltet bleibt. Sollte die Pumpe also zum Schutz einer Überlastung nach einer Zwangsabschaltung nicht wiedereingeschaltet werden, weil die vorstehend erläuterten Prüfkriterien nicht erfüllt sind, so bleibt die Pumpe für eine vorgebbare vierte Zeitdauer ausgeschaltet. Auch eine manuelle Wiedereinschaltung ist innerhalb dieser Zeitdauer bevorzugterweise nicht möglich. Verwenderseitige Fehlbedienungen, die zu einer Überlastung der Pumpe führen könnten, sind somit ausgeschlossen.According to a further feature of the invention, it is provided that the pump remains switched off for a predeterminable fourth time period when it is not switched on again. If the pump is not switched on again to protect an overload after a forced shutdown because the test criteria explained above are not met, the pump remains switched off for a predefinable fourth time period. Manual reclosing is also preferably not possible within this period. Operating errors by the user, which could lead to an overload of the pump, are therefore excluded.

Gemäß einem weiteren Merkmal der Erfindung ist vorgesehen, dass der Zähler bei einem Nicht-Betrieb der Pumpe für eine vorgebbare fünfte Zeitdauer auf Null zurückgesetzt wird.According to a further feature of the invention, it is provided that the counter is reset to zero for a specifiable fifth time period when the pump is not operating.

Sollte sich die Pumpe über eine fünfte vorgebbare Zeitdauer hinaus im Nicht-Betriebsmodus befinden, so besteht auch bei einem anschließenden Betrieb der Pumpe nicht die Gefahr einer sofortigen Überlastung. Der Zähler kann deshalb mit Erreichen der vorgebbaren fünften Zeitdauer auf Null zurückgesetzt werden. Es ist dann wieder ein Pumpenbetrieb in schon vorbeschriebener Weise möglich, das heißt mit der maximal möglichen Anzahl an Zwangsabschaltungen und Wiedereinschaltungen.If the pump is in the non-operating mode for a fifth definable period of time, there is no risk of an immediate overload even if the pump is subsequently operated. The counter can therefore be reset to zero when the specifiable fifth time period has been reached. It is then possible to operate the pump again in the manner already described, that is to say with the maximum possible number of forced shutdowns and restarting operations.

Bevorzugterweise werden die vorgebbare vierte Zeitdauer und die vorgebbare fünfte Zeitdauer gleich groß gewählt, das heißt der Zähler der Pumpe wird auf Null zurückgesetzt, wenn ein Nicht-Wiedereinschalten der Pumpe nach einer Zwangsabschaltung gegeben ist oder wenn die Pumpe im bestimmungsgemäßen Betrieb für diese Zeitdauer mangels abzupumpendem Wasser ausgeschaltet war.Preferably, the predeterminable fourth time period and the predeterminable fifth time period are chosen to be of equal size, i.e. the counter of the pump is reset to zero if the pump is not switched on again after a forced shutdown or if the pump is in operation for this period of time due to a lack of pumping time Water was turned off.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung anhand der Figuren. Dabei zeigen:

Fig. 1
in schematischer Frontansicht eine gattungsgemäße Geräteeinheit;
Fig. 2
in schematischer Seitenansicht die Geräteeinheit nach Figur 1 und
Fig. 3
in einem Fließdiagramm das erfindungsgemäße Verfahren.
Further features and advantages of the invention result from the following description with reference to the figures. Show:
Fig. 1
in a schematic front view of a generic device unit;
Fig. 2
the device unit in a schematic side view Figure 1 and
Fig. 3
the method according to the invention in a flow chart.

Die Figuren 1 und 2 lassen jeweils in schematischer Ansicht eine gattungsgemäße Geräteeinheit 1 zur Dämmschichttrocknung erkennen. Die Geräteeinheit 1 verfügt in an sich bekannter Weise über ein Unterteil 2 einerseits sowie über ein Oberteil 3 andererseits. Dabei ist das Oberteil 3 abnehmbar am Unterteil 2 angeordnet.The Figures 1 and 2 each show a generic device unit 1 for insulating layer drying in a schematic view. The device unit 1 has a lower part 2 on the one hand and an upper part 3 on the other hand in a manner known per se. The upper part 3 is removably arranged on the lower part 2.

Das Unterteil 2 beherbergt eine in den Figuren nicht näher dargestellte Vakuumkammer. Diese ist verwenderseitig von oben bei abgenommenem Oberteil 3 zugänglich. Innerhalb der Vakuumkammer ist ein in den Figuren ebenfalls nicht näher dargestellter Wasserabscheider angeordnet. An diesem Wasserabscheider scheidet sich im bestimmungsgemäßen Verwendungsfall Wasser ab, das sich dann innerhalb der Vakuumkammer ansammelt.The lower part 2 houses a vacuum chamber, not shown in the figures. This is accessible to the user from above with the upper part 3 removed. A water separator, also not shown in the figures, is arranged within the vacuum chamber. When used as intended, water separates from this water separator, which then collects within the vacuum chamber.

Innerhalb der Vakuumkammer ist desweiteren eine in den Figuren nicht näher dargestellte Pumpe angeordnet. Diese pumpt das sich in der Vakuumkammer ansammelnde Wasser füllstandsabhängig ab. Es können dabei zwei Füllstände definiert sein, nämlich ein Füllstand Min. und ein Füllstand Max. Sinkt der Wasserpegel innerhalb der Vakuumkammer unter Füllstand Min., so schaltet die Pumpe ab. Sobald indes ein Wasserpegel erreicht ist, der oberhalb des Füllstands Min. liegt, wird die Pumpe eingeschaltet, so dass es zur Wasserabpumpung kommt. Sollte trotz eingeschalteter Pumpe ein Wasserpegelstand erreicht werden, der dem Füllstand Max. entspricht, so schaltet ein im Weiteren noch näher beschriebener und als Vakuumpumpe dienender Saugmotor 4 ab.Furthermore, a pump, not shown in the figures, is arranged within the vacuum chamber. This pumps out the water that accumulates in the vacuum chamber depending on the fill level. Two levels can be defined, namely a minimum level and a maximum level. If the water level within the vacuum chamber falls below the minimum level, the pump switches off. As soon as a water level is reached which is above the level Min., The pump is switched on so that water is pumped out. If, despite the pump being switched on, a water level which corresponds to the fill level Max. Is reached, a naturally aspirated motor 4 described in more detail below and serving as a vacuum pump switches off.

Das Oberteil 3 der Geräteeinheit 1 beherbergt zumindest teilweise den als Vakuumpumpe dienenden Saugmotor 4. Im bestimmungsgemäßen Verwendungsfall wird der Saugmotor 4 betrieben, was zur Ausbildung eines Vakuums innerhalb der Vakuumkammer führt. Die Vakuumkammer ist ihrerseits durch eine entsprechende Verschlauchung strömungstechnisch an die zu trocknende Dämmschicht angeschlossen, so dass im Betriebsfall ein Ansaugen von feuchter Luft aus der Dämmschicht stattfindet. Diese feuchte Luft, auch Prozessluft genannt, gelangt infolge der Vakuumausbildung in die Vakuumkammer, wo es dann in schon vorbeschriebener Weise zu einem Abscheiden von Wasser aus der feuchten Luft am Wasserabscheider kommt.The upper part 3 of the device unit 1 at least partially houses the suction motor 4 serving as a vacuum pump. In the intended use, the suction motor 4 is operated, which leads to the formation of a vacuum within the vacuum chamber. For its part, the vacuum chamber is connected to the insulation layer to be dried by means of appropriate tubing, so that moist air is sucked out of the insulation layer during operation. This moist air, also called process air, reaches the vacuum chamber as a result of the vacuum, where water is then separated from the moist air at the water separator in the manner described above.

Wie die Frontansicht nach Figur 1 erkennen lässt, verfügt die Geräteeinheit 1 im gezeigten Ausführungsbeispiel über drei Anschlüsse 5 sowie über einen weiteren Anschluss 6, der seitlich ausgebildet ist. Die Anschlüsse 5 und 6 dienen dem strömungstechnischen Anschluss von Schläuchen 7 beziehungsweise 8, wobei drei Schläuche 7 für die Prozessluftzuführung an die Anschlüsse 5 und ein Schlauch 8 für die Abführung von Prozessluft an den Anschluss 6 angeschlossen sind.Like the front view after Figure 1 can be seen, the device unit 1 has in the shown Embodiment via three connections 5 and a further connection 6, which is formed laterally. The connections 5 and 6 are used for the fluidic connection of hoses 7 and 8, with three hoses 7 for the process air supply to the connections 5 and a hose 8 for the discharge of process air to the connection 6.

Wie insbesondere die Darstellung nach Figur 1 erkennen lässt, wird im bestimmungsgemäßen Verwendungsfall feuchte Prozessluft aus der zu trocknenden Dämmschicht abgesaugt und der Geräteeinheit 1 mittels der Schläuche 7 in Entsprechung des Pfeils 9 zugeführt. Die mittels der Geräteeinheit entfeuchtete Luft wird als getrocknete Prozessluft über den Anschluss 6 und den daran angeschlossenen Schlauch 8 in Entsprechung des Pfeils 10 abgeführt.As especially the illustration after Figure 1 reveals, in the intended use, moist process air is sucked out of the insulating layer to be dried and supplied to the device unit 1 by means of the hoses 7 in accordance with the arrow 9. The air dehumidified by means of the device unit is discharged as dried process air via the connection 6 and the hose 8 connected to it in accordance with the arrow 10.

Für einen Überlastschutz der Pumpe, die im bestimmungsgemäßen Verwendungsfall das sich in der Vakuumkammer ansammelnde Wasser abpumpt, wird erfindungsgemäß ein Verfahren durchgeführt, wie es sich schematisch aus dem Flussdiagramm nach Figur 3 ergibt.For an overload protection of the pump, which pumps out the water accumulating in the vacuum chamber in the intended use, a method is carried out according to the invention, as is shown schematically in the flowchart Figure 3 results.

Bei 100 wird zunächst geprüft, ob ein Abpumpen erforderlich ist. Zu diesem Zweck wird der Füllstand innerhalb der Vakuumkammer erfasst. Hat der Wasserpegelstand innerhalb der Vakuumkammer Füllstand Min. noch nicht erreicht, so erfolgt gemäß 101 kein Abpumpen. Ist indes ein den vorgebbaren Füllstand Min. übersteigender Wasserpegel erreicht, erfolgt gemäß 102 ein Abpumpen, das heißt die Pumpe wird eingeschaltet.At 100 it is first checked whether pumping is necessary. For this purpose, the level inside the vacuum chamber is recorded. If the water level in the vacuum chamber has not yet reached the minimum level, pumping down does not take place in accordance with 101. If, however, a water level exceeding the predefinable fill level min. Has been reached, pumping down takes place according to 102, that is to say the pump is switched on.

Die Dauer des Pumpenbetriebs wird erfasst. Dabei werden Zeitspannen, in denen die Pumpe betrieben wird, als positive Zeitspannen und Zeitspannen, in denen die Pumpe nicht betrieben wird, als negative Zeitspannen erfasst. Die erfasste Zeitspannen werden zur Bestimmung der Pumpenbetriebsdauer aufsummiert.The duration of pump operation is recorded. Periods in which the pump is operated are recorded as positive periods and periods in which the pump is not operated are recorded as negative periods. The recorded time periods are added up to determine the pump operating time.

Bei 103 wird geprüft, ob die Pumpenbetriebsdauer einer ersten vorgebbaren Zeitdauer von zum Beispiel 15 Minuten entspricht oder diese sogar übersteigt. Sollte dies nicht der Fall sein, wird die Pumpe gemäß Verfahrensschritt 102 weiterbetrieben.At 103 it is checked whether the pump operating time corresponds to a first predeterminable time period of, for example, 15 minutes or even exceeds it. If this is not the case, the pump continues to be operated according to method step 102.

Ergibt indes ein Vergleich der Pumpenbetriebsdauer mit der vorgebbaren ersten Zeitdauer, dass die vorgebbare erste Zeitdauer überschritten ist, so wird bei 104 die Pumpe ausgeschaltet. Zudem wird bei 105 ein interner Pumpenzähler um einen Schritt hochgesetzt. In einem Display der Geräteeinheit wird gemäß 106 verwenderseitig erkennbar angezeigt, dass die Pumpe zwecks Abkühlung ausgeschaltet ist.A comparison of the pump operating time with the predeterminable first results If the predeterminable first time period is exceeded, the pump is switched off at 104. In addition, an internal pump counter is incremented by 105 at 105. In accordance with 106, the display of the device unit clearly shows that the pump is switched off for the purpose of cooling.

Die Pumpe bleibt für eine vorgebbare Zeitdauer zwecks Abkühlung ausgeschaltet. Diese zweite Zeitdauer kann beispielsweise 15 Minuten betragen. Bei 107 wird geprüft, ob die vorgebbare zweite Zeitdauer bereits abgelaufen ist. Bejahendenfalls wird bei 108 geprüft, ob der interne Zählerstand der Pumpe kleiner als eine vorgebbare Anzahl an Zählschritten ist. Bejahendenfalls wird gemäß 100 geprüft, ob ein Abpumpen erforderlich ist, was bejahendenfalls zu einem Wiedereinschalten der Pumpe gemäß 102 führt. Die vorgebbare Anzahl an Zählschritten kann beispielsweise mit 7 gewählt werden.The pump remains switched off for a predefinable period of time for cooling. This second time period can be, for example, 15 minutes. At 107 it is checked whether the predeterminable second time period has already expired. If so, it is checked at 108 whether the internal meter reading of the pump is less than a predeterminable number of counting steps. In the affirmative, a check is made in accordance with 100 to determine whether pumping is required, which in the affirmative leads to the pump being switched on again in accordance with 102. The predeterminable number of counting steps can be selected with 7, for example.

Sollte die Zählschrittprüfung ergeben, dass eine vorgebbare Anzahl an Zählschritten überschritten ist, so wird gemäß 109 geprüft, ob die Hochsetzung des Zählers innerhalb einer vorgebbaren dritten Zeitdauer von zum Beispiel 4 Stunden erfolgt ist. Sollte dies nicht der Fall sein, die Hochsetzung des Zählers also innerhalb eines Zeitraums erfolgt sein, der die vorgebbare dritte Zeitdauer übersteigt, so erfolgt gemäß Schritt 100 eine Prüfung, ob ein Pumpen erforderlich ist, so dass bejahendenfalls gemäß 102 eine Wiedereinschaltung der Pumpe erfolgt.If the counting step check reveals that a predeterminable number of counting steps has been exceeded, then a check is made in accordance with 109 to determine whether the counter has been incremented within a predefinable third time period of, for example, 4 hours. If this is not the case, i.e. the counter has been incremented within a period of time that exceeds the predeterminable third period of time, then a check is carried out in accordance with step 100 as to whether pumping is necessary, so that the pump is reactivated in accordance with 102 if so.

Ergibt die Prüfung bei 109 indes, dass der Zähler innerhalb der vorgebbaren dritten Zeitdauer bis auf die vorgebbare Anzahl an Zählschritten hochgesetzt worden ist, so bleibt die Pumpe gemäß Schritt 110 ausgeschaltet. Dem Verwender wird gemäß Verfahrensschritt 111 in einem Display der Geräteeinheit 1 angezeigt, dass die Pumpe ausgeschaltet bleibt und die Pumpe zu prüfen ist.If the check at 109 reveals, however, that the counter has been increased to the predeterminable number of counting steps within the predefinable third time period, the pump remains switched off in accordance with step 110. According to method step 111, the user is shown in a display of the device unit 1 that the pump remains switched off and the pump is to be checked.

Bei 112 wird geprüft, ob der Pegelstand des Wassers einen Füllstand Max. erreicht hat. Bejahendenfalls wird auch der als Vakuumpumpe dienende Saugmotor 4 gemäß 113 ausgeschaltet. Andernfalls kann dieser gemäß 114 noch weiter betrieben werden, bis die Füllstandsprüfung bei 111 ergibt, dass der Saugmotor 4 auszuschalten ist.At 112 it is checked whether the water level has reached a max. In the affirmative, the suction motor 4 serving as a vacuum pump is also switched off according to 113. Otherwise, this can continue to be operated according to 114 until the level check at 111 shows that the naturally aspirated engine 4 is to be switched off.

Wie sich aus der vorstehenden Verfahrensbeschreibung ergibt, sieht die erfindungsgemäße Verfahrensdurchführung eine zweistufige Sicherheitsprozedur vor. Dabei ist gemäß einer ersten Sicherheitsstufe vorgesehen, dass eine Zwangsabschaltung der Pumpe dann erfolgt, wenn ein Pumpenbetrieb von mehr als 15 Minuten festgestellt wurde. Ein automatisches Wiedereinschalten der Pumpe erfolgt erst nach Absolvierung einer vorgebbaren Zeitdauer der Abkühlung.As can be seen from the above description of the method, the method implementation according to the invention provides a two-stage security procedure. According to a first safety level, it is provided that the pump is switched off automatically when pump operation of more than 15 minutes has been determined. An automatic restart of the pump takes place only after the cooling time has been set.

Eine automatische Wiedereinschaltung der Pumpe unterbleibt indes dann, wenn die Pumpe innerhalb einer zurückliegenden vorgebbaren Zeitdauer zu häufig zwangsabgeschaltet und wiedereingeschaltet wurde. So kann beispielsweise vorgesehen sein, dass eine Wiedereinschaltung der Pumpe trotz absolvierter Abkühlung dann unterbleibt, wenn sie innerhalb der zurückliegenden 4 Stunden siebenmal zwangsabgeschaltet wurde.An automatic restart of the pump does not occur, however, if the pump has been shut down and switched on again too often within a predeterminable time period. For example, it can be provided that the pump is not switched on again, even after cooling has been completed, if it has been switched off seven times within the past 4 hours.

Bezugszeichenreference numeral

11
Geräteeinheitunit
22
Unterteillower part
33
Oberteiltop
44
Saugmotornaturally aspirated
55
Anschlussconnection
66
Anschlussconnection
77
Schlauchtube
88th
Schlauchtube
99
Pfeilarrow
1010
Pfeilarrow
100 bis 114100 to 114
Verfahrensschrittesteps

Claims (11)

  1. Method for operating an apparatus unit (1) for drying insulating layers by means of vacuum, in which a suction motor (4) for generating a vacuum is operated in a vacuum chamber and in which water collecting in the vacuum chamber is pumped off by means of a pump, the pump being switched off when a predeterminable first time period for pump operation is reached, in which the pump is switched on again after a predeterminable second time period has elapsed, wherein a counter is increased by one counting step when the pump is switched on again, characterized in that the pump is not switched on again when a predeterminable number of counting steps have been reached, and in that the time periods in which the pump is operated are collected as positive time periods and in which the pump is not operated are collected as negative time periods and are added up to determine a comparison time period.
  2. Method according to claim 1, characterized in that a time period between 5 minutes and 25 minutes, preferably between 10 minutes and 20 minutes, even more preferably of 15 minutes, is selected as predeterminable first duration.
  3. Method according to claim 1, characterized in that the comparison time period is compared with the predeterminable first duration and the pump is switched off as soon as the comparison time period is equal to or greater than the predeterminable first duration.
  4. Method according to one of the preceding claims, characterized in that a time period between 5 minutes and 25 minutes, preferably between 10 minutes and 20 minutes, even more preferably of 15 minutes, is selected as predeterminable second duration.
  5. Method according to one of the preceding claims, characterized in that the suction motor (4) continues to be operated with the pump switched off until a predeterminable water filling level in the vacuum chamber is reached and is then switched off.
  6. Method according to one of the preceding claims, characterized in that the pump is not switched on again only if the predeterminable number of counting steps is reached within a predeterminable third duration.
  7. Method according to claim 6, characterized in that a time period between 3 hours and 5 hours, preferably 4 hours, is selected as predeterminable third duration.
  8. Method according to one of the preceding claims, characterized in that 5 to 9, preferably 6 to 8, more preferably 7 is selected as predeterminable number of counting steps.
  9. Method according to claim 6, characterized in that the pump remains switched off for a predeterminable fourth duration if it is not switched on again.
  10. Method according to claim 9, characterized in that the counter is reset to zero for a predeterminable fifth duration in the event of non-operation of the pump.
  11. Method according to claim 10, characterized in that the predeterminable fourth duration and the predeterminable fifth duration are selected to be of equal value.
EP17169117.3A 2017-05-02 2017-05-02 Method for operating an appliance unit for drying an insulating coating Active EP3399116B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17169117.3A EP3399116B1 (en) 2017-05-02 2017-05-02 Method for operating an appliance unit for drying an insulating coating
PL17169117T PL3399116T3 (en) 2017-05-02 2017-05-02 Method for operating an appliance unit for drying an insulating coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17169117.3A EP3399116B1 (en) 2017-05-02 2017-05-02 Method for operating an appliance unit for drying an insulating coating

Publications (2)

Publication Number Publication Date
EP3399116A1 EP3399116A1 (en) 2018-11-07
EP3399116B1 true EP3399116B1 (en) 2019-12-18

Family

ID=58692351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17169117.3A Active EP3399116B1 (en) 2017-05-02 2017-05-02 Method for operating an appliance unit for drying an insulating coating

Country Status (2)

Country Link
EP (1) EP3399116B1 (en)
PL (1) PL3399116T3 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3667189D1 (en) * 1986-05-26 1990-01-04 Munters Trocknungs Service Gmb PLANT FOR DRYING OUT DAMPED INSULATION LAYERS, LIKE FOOT INSULATION LAYERS, THERMAL INSULATION LAYERS OR THE LIKE.
US6254353B1 (en) * 1998-10-06 2001-07-03 General Electric Company Method and apparatus for controlling operation of a submersible pump
US8540493B2 (en) * 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method
DE102015005565A1 (en) 2015-05-04 2016-11-10 Mann + Hummel Gmbh Method for producing filter bellows
DE102015005865B4 (en) 2015-05-11 2018-05-03 Trotec Gmbh & Co. Kg Apparatus for drying insulating layers of floors in a vacuum process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3399116A1 (en) 2018-11-07
PL3399116T3 (en) 2020-06-29

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