EP4044872B1 - Valve system - Google Patents

Valve system Download PDF

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Publication number
EP4044872B1
EP4044872B1 EP20793255.9A EP20793255A EP4044872B1 EP 4044872 B1 EP4044872 B1 EP 4044872B1 EP 20793255 A EP20793255 A EP 20793255A EP 4044872 B1 EP4044872 B1 EP 4044872B1
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EP
European Patent Office
Prior art keywords
compressed
compressed air
air
valve system
valve
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EP20793255.9A
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German (de)
French (fr)
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EP4044872A1 (en
EP4044872C0 (en
Inventor
Wolfgang Huber
Robert ZUCKERSTÄTTER
Alexander MALZL
Andreas MALZL
Johannes MALZL
Hans Malzl
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/123—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for beds or mattresses
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/082—Fluid mattresses or cushions of pneumatic type with non-manual inflation, e.g. with electric pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/083—Fluid mattresses or cushions of pneumatic type with pressure control, e.g. with pressure sensors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/10—Fluid mattresses or cushions with two or more independently-fillable chambers

Definitions

  • the invention relates to a valve system with at least two compressed air valves for an object that can be pressurized/inflated with compressed air and has at least two independent air chambers, in particular a mattress, wherein at least one compressed air valve can be assigned to each air chamber, wherein the at least one compressed air valve is arranged on a first surface of a printed circuit board , and wherein a second surface of the printed circuit board opposite the first surface is set up as a sealing surface for at least one compressed air inlet, and its use for controlling the pressure within at least one air chamber of a measuring mattress.
  • Measuring mattresses such as those described in the EP 2 490 575 B1 are described. These measuring mattresses have individually controllable air chambers that can be subjected to different air pressures in order to simulate the different foam hardnesses in these areas. A wide variety of valve systems are used to control the individual pressures in the respective air chambers.
  • EP 3 449 774 A1 describes a valve system of the type mentioned in the opening paragraph, in which an air chamber is formed between two printed circuit boards and is connected to the measuring mattress, and at least one compressed air valve is provided which controls the pressure in this air chamber between the two printed circuit boards.
  • Other valve systems are, for example, in the US 5,904,172A or the US 2011/0095216 A1 described.
  • Valve systems described in the prior art are for the most part complex and/or require specially manufactured components and valves in order to be suitable for use in connection with measuring mattresses.
  • a valve system of the type mentioned in that a substantially plate-shaped distribution element is provided with a first surface, wherein a connection element for the supply of compressed air is provided on the distribution element, which is connected to the at least a compressed air inlet is in fluid communication, with the at least one compressed air inlet being arranged on the first surface of the distribution element, with the at least one compressed air inlet being in fluid communication with the at least one compressed air valve via at least one supply opening in the circuit board, with at least one outlet opening in the circuit board is provided, and wherein the at least one outlet opening fluid-tightly connects the at least one compressed air valve to at least one outlet channel arranged within the distribution element.
  • the compressed air valves for controlling the individual air chambers on the measuring mattress or another inflatable object with several air chambers are arranged on a printed circuit board.
  • the distribution element according to the invention has a connection for the supply of compressed air and a large number of compressed air outlets which are connected to the corresponding air chambers, for example of the measuring mattress.
  • Supply channels to the compressed air valves and outlet channels from the compressed air valves to the compressed air outlets are arranged within this distribution element, which allows a particularly space-saving design of the valve system according to the invention.
  • only standard components are required, in particular commercially available solenoid valves are used as compressed air valves.
  • At least one pressure sensor is arranged in the at least one outlet channel.
  • the arrangement of a pressure sensor in the outlet duct allows a particularly reliable measurement of the currently prevailing overpressure in the outlet duct and subsequently in the air chamber of the measuring mattress associated with the compressed air outlet. This measurement also takes place, in particular, independently of the pressure prevailing in the compressed air inlet and the other individual compressed air outlets, and can be carried out in particular when the compressed air valve is closed.
  • This measurement in the outflow duct is particularly reliable when the at least outflow duct has at least one sensor opening which is preferably accessible via the first surface of the distribution element, the at least one pressure sensor being arranged in the sensor opening.
  • This sensor opening also makes it possible to quickly replace any defective pressure sensor.
  • a compressed air chamber is provided between the at least one compressed air valve and the first surface of the printed circuit board, into which the at least one supply opening opens.
  • an independent compressed air chamber is formed between each individual compressed air valve and the first surface of the circuit board, which allows the compressed air to be supplied evenly to the compressed air valve.
  • a particularly space-saving design of the valve system according to the invention is achieved if the at least one outlet opening penetrates the compressed air chamber and is sealed in a fluid-tight manner against the compressed air chamber, which is preferably designed as an annular gap.
  • a further embodiment of the invention provides that at least one receptacle for arranging a sensor and/or switch element, in particular at least one temperature switch, is provided in the distribution element. Should the temperature of the distribution element exceed a predetermined threshold value, the entire valve system is de-energized in order to prevent overheating of the sealing elements in particular.
  • the distribution element according to the invention is particularly easy to manufacture if it is made of metal, in particular aluminum or an aluminum alloy.
  • valve system according to the invention has proven particularly effective when used to control the pressure within at least one air chamber of a measuring mattress.
  • FIG. 1 shows the valve system 100 according to the invention in a perspective view, which in this embodiment of the invention is in a housing 200 is housed.
  • a printed circuit board 110 is arranged in this housing 200, on the first surface 111 of which compressed air valves 120 are mounted in a fluid-tight manner.
  • These compressed air valves 120 are, for example, magnetic valves that are known per se and are typically used in pneumatic systems.
  • An essentially plate-shaped distribution element 130 is arranged between circuit board 110 and housing base 201 on a second surface 112 of circuit board 110 , which distribution element has compressed air outlets 140 , each of which is associated with a pressure valve 120 . Furthermore, a pump connection 150 is arranged on this distribution element 130, which is connected to a compressed air pump 1200 ( figure 5 ) can be connected, which supplies the valve system 100 according to the invention with compressed air.
  • sensor and control elements 310, 320 are arranged on the printed circuit board 110, which serve to monitor and control the valve system 100 according to the invention.
  • a meandering compressed air inlet 132 is arranged on a first surface 131 of the distribution element 130, which faces the second surface 112 of the circuit board 110 in the position of use. In the position of use, this compressed air inlet 132 is sealed by the circuit board 110 via the second surface 112 thereof.
  • Compressed air flows into the compressed air inlet 132 via the pump connection 150 .
  • the meandering design of the compressed air inlet 132 allows the compressed air to be supplied evenly to the compressed air valves 120.
  • Outlet openings 133 are also arranged in the compressed air inlet 132 and each connect a compressed air valve 120 to an outlet channel within the distribution element 130 and subsequently to a compressed air outlet 140 .
  • sensor openings 134 are arranged on the first surface 131 of the distribution element 130 . In the position of use, these sensor openings 134 are likewise sealed off from the second surface 112 of the printed circuit board 110 .
  • the distribution element 130 has recesses 160 for accommodating temperature switches (not shown) on a side surface 131A. Since the compressed air valves 120 usually generate a lot of heat during operation, these temperature switches monitor the temperature of the distribution element 130, which is preferably made of aluminum or an aluminum alloy. As soon as a specific, definable temperature threshold value is exceeded, the valve system according to the invention 100 de-energized. In this way, damage, in particular to sealing elements or the compressed air valves 120, is avoided. Further temperature switches of this type can also be provided on the printed circuit board 110 or on the housing 200, for example.
  • valve system 100 In the figs 3 and 4 The structure of the valve system 100 according to the invention is shown schematically in an exploded view.
  • the compressed air valves 120 are sealed off from the first surface 111 of the circuit board 110 by means of a first sealing ring 170A and a second sealing ring 170B.
  • the second sealing ring 170B is arranged with its smaller diameter within the area of the first sealing ring 170A, in particular concentrically.
  • a further, third sealing ring 170C is arranged on the first surface 131 of the distribution element 130 and interacts with the second surface 112 of the printed circuit board 110 and is surrounded by a further sealing ring 171D running around the compressed air inlet 132 .
  • At least one supply opening (not shown) is provided in the printed circuit board 110 and is arranged in a region between the first sealing ring 170A and the second sealing ring 170B. Furthermore, there is an outlet hole 113 in the printed circuit board 110, which connects the respective pressure valve 120 to the respective outlet opening 133 in the distribution element 130 and subsequently to the respective outlet channel in the distribution element 130.
  • This outlet bore 113 is sealed fluid-tight by the second sealing ring 170A with respect to the pressure valve 120 and the first surface 111 of the circuit board 110, and by the third sealing ring 170C with respect to the first surface 131 of the distribution element 130 and the second surface 111 of the circuit board 110.
  • the compressed air is between the first surface 111 of the circuit board 110 and the bottom of the compressed air valve 120 in the compressed air chamber 172 formed by the two sealing rings 170A, 170B , which is designed as an annular gap included.
  • the compressed air valve 120 As soon as the compressed air valve 120 is opened, the compressed air flows through the compressed air valve 120 and passes through the circuit board 110 via the outlet hole 113 into the outlet opening 133 in the distribution element 130 in order to then be routed to the compressed air outlets 140 .
  • compressed air outlets 140 are connected to the respective air chambers 1110 of the inflatable object 1000 ( figure 5 ) connected. Compressed air at different pressures can be applied to these air chambers 1110 independently of one another via the compressed air valves 120 .
  • the compressed air is first via the distribution element 130 to the respective compressed air valve 120 arranged on the printed circuit board 110, and when the compressed air valve 120 is open, again fed back through the printed circuit board 110 into the distribution element 130 and routed to the corresponding compressed air outlet 140.
  • a system of pressure sensors 180 is preferably provided for measuring and controlling the pressure in the individual air chambers 1110 .
  • a pressure sensor 180 is arranged in the area of the sensor bore 135 of each compressed air outlet 140 .
  • the sensor bore 135 is arranged on the second surface 112 of the circuit board 110 and is sealed in a fluid-tight manner by means of a sealing ring 170E.
  • This pressure sensor 180 has the task of determining the differential pressure in the compressed air outlet 140 or the inflatable object connected to it in relation to the external pressure.
  • an absolute pressure sensor 181 is arranged in the compressed air inlet 132, which monitors the absolute pressure in the compressed air inlet 132.
  • This absolute pressure sensor 181 can be used to detect any defective pressure valve 120 due to an undesired increase in pressure in the compressed air inlet 132, although the pressure in the compressed air outlet 140 itself does not change.
  • a measuring mattress 1000 is shown schematically with a base body 1100 and tubular air chambers 1110, each air chamber 1110 being pressurizable separately with compressed air.
  • the valve system 100 according to the invention is connected to a pump 1200 for the required compressed air, the compressed air being routed to these air chambers 1110 via the compressed air valves 120 in the manner described above.
  • the pressure is measured in the individual air chambers 1110 via pressure sensors 120, which are located between the measuring mattress 1000 and the compressed air valves 120, as in particular in FIG 4 shown, are arranged within the valve system 100 according to the invention.
  • the present invention is not limited to the embodiment described above.
  • different compressed air valves and their different arrangement can be provided on a printed circuit board.
  • the distribution element is essential to the invention, which, due to its stable metal design, allows reliable and simple distribution of the compressed air to the individual compressed air valves.
  • the arrangement of pressure sensors according to the invention in this distribution element in the area of the compressed air outlets allows a particularly precise and controlled measurement of the overpressure prevailing in the inflatable object.
  • the valve system according to the invention not only suitable for the pressure build-up in the inflatable object, but also allows a controlled reduction in pressure in selected areas of the inflatable object, in particular in the air chambers of a measuring mattress.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Fluid-Driven Valves (AREA)

Description

Die Erfindung betrifft ein Ventilsystem mit zumindest zwei Druckluftventilen für ein mittels Druckluft beaufschlagbares/aufblasbares Objekt mit zumindest zwei voneinander unabhängigen Luftkammern, insbesondere eine Matratze, wobei jeder Luftkammer zumindest ein Druckluftventil zuordenbar ist, wobei das zumindest eine Druckluftventil auf einer ersten Oberfläche einer Leiterplatte angeordnet ist, und wobei eine der ersten Oberfläche gegenüberliegende zweite Oberfläche der Leiterplatte als Dichtfläche für zumindest einen Druckluftzulauf eingerichtet ist, sowie deren Verwendung zur Steuerung des Drucks innerhalb zumindest einer Luftkammer einer Messmatratze.The invention relates to a valve system with at least two compressed air valves for an object that can be pressurized/inflated with compressed air and has at least two independent air chambers, in particular a mattress, wherein at least one compressed air valve can be assigned to each air chamber, wherein the at least one compressed air valve is arranged on a first surface of a printed circuit board , and wherein a second surface of the printed circuit board opposite the first surface is set up as a sealing surface for at least one compressed air inlet, and its use for controlling the pressure within at least one air chamber of a measuring mattress.

Für die Anpassung einer Schlafmatratze aus Schaumstoff an individuelle Bedürfnisse, insbesondere die Auswahl der verschiedenen Bereiche mit unterschiedlichen Schaumstoffhärten, werden Messmatratzen eingesetzt, wie sie beispielsweise in der EP 2 490 575 B1 beschrieben sind. Diese Messmatratzen verfügen über einzeln ansteuerbare Luftkammern, die mit unterschiedlichem Luftdruck beaufschlagt werden können, um auf diese Weise die unterschiedlichen Schaumstoffhärten in diesen Bereichen zu simulieren. Für die Steuerung der einzelnen Drücke in den jeweiligen Luftkammern kommen unterschiedlichste Ventilsysteme zum Einsatz.Measuring mattresses, such as those described in the EP 2 490 575 B1 are described. These measuring mattresses have individually controllable air chambers that can be subjected to different air pressures in order to simulate the different foam hardnesses in these areas. A wide variety of valve systems are used to control the individual pressures in the respective air chambers.

In der EP 3 449 774 A1 wird ein Ventilsystem der eingangs erwähnten Art beschrieben, wobei zwischen zwei Leiterplatten eine Luftkammer ausgebildet wird, die mit der Messmatratze in Verbindung steht, und wobei zumindest ein Druckluftventil vorgesehen ist, das den Druck in dieser Luftkammer zwischen den beiden Leiterplatten steuert. Weitere Ventilsysteme sind beispielsweise in der US 5,904,172 A oder der US 2011/0095216 A1 beschrieben.In the EP 3 449 774 A1 describes a valve system of the type mentioned in the opening paragraph, in which an air chamber is formed between two printed circuit boards and is connected to the measuring mattress, and at least one compressed air valve is provided which controls the pressure in this air chamber between the two printed circuit boards. Other valve systems are, for example, in the US 5,904,172A or the US 2011/0095216 A1 described.

Dem Stand der Technik beschriebenen Ventilsysteme sind großteils aufwendig aufgebaut und/oder erfordern speziell gefertigte Bestandteile und Ventile, um für den Einsatz in Verbindung mit Messmatratzen geeignet zu sein.Valve systems described in the prior art are for the most part complex and/or require specially manufactured components and valves in order to be suitable for use in connection with measuring mattresses.

Es ist daher Aufgabe der Erfindung, ein Ventilsystem bereitzustellen, das auf einfache Weise zu fertigen ist und im Wesentlichen mit Standardkomponenten rasch und unkompliziert aufgebaut werden kann.It is therefore the object of the invention to provide a valve system that can be manufactured in a simple manner and can essentially be set up quickly and easily with standard components.

Diese Aufgabe wird durch ein Ventilsystem der eingangs erwähnten Art dadurch gelöst, dass ein im Wesentlichen plattenförmiges Verteilungselement mit einer ersten Oberfläche vorgesehen ist, wobei ein Anschlusselement für die Zufuhr von Druckluft an dem Verteilungselement vorgesehen ist, das mit dem zumindest einen Druckluftzulauf in fluider Verbindung steht, wobei der zumindest eine Druckluftzulauf an der ersten Oberfläche des Verteilungselements angeordnet ist, wobei der zumindest eine Druckluftzulauf über zumindest eine Zufuhröffnung in der Leiterplatte mit dem zumindest einen Druckluftventil in fluider Verbindung steht, wobei zumindest eine Abgangsöffnung in der Leiterplatte vorgesehen ist, und wobei die zumindest eine Abgangsöffnung das zumindest eine Druckluftventil mit zumindest einem innerhalb des Verteilungselements angeordneten Abgangskanal fluiddicht verbindet.This object is achieved by a valve system of the type mentioned in that a substantially plate-shaped distribution element is provided with a first surface, wherein a connection element for the supply of compressed air is provided on the distribution element, which is connected to the at least a compressed air inlet is in fluid communication, with the at least one compressed air inlet being arranged on the first surface of the distribution element, with the at least one compressed air inlet being in fluid communication with the at least one compressed air valve via at least one supply opening in the circuit board, with at least one outlet opening in the circuit board is provided, and wherein the at least one outlet opening fluid-tightly connects the at least one compressed air valve to at least one outlet channel arranged within the distribution element.

Erfindungsgemäß ist vorgesehen, dass die Druckluftventile zur Steuerung der einzelnen Luftkammern an der Messmatratze oder eines anderen aufblasbaren Objekts mit mehreren Luftkammern auf einer Leiterplatte angeordnet sind. Das erfindungsgemäße Verteilungselement verfügt über einen Anschluss für die Zufuhr von Druckluft sowie über eine Vielzahl von Druckluftabgängen, die mit den entsprechenden Luftkammern beispielsweise der Messmatratze in Verbindung stehen. Innerhalb dieses Verteilungselements sind Zufuhrkanäle zu den Druckluftventilen sowie Abgangskanäle von den Druckluftventilen zu den Druckluftabgängen angeordnet, was einen besonders platzsparenden Aufbau des erfindungsgemäßen Ventilsystems erlaubt. Ebenso werden lediglich Standardkomponenten benötigt, insbesondere kommen handelsübliche Magnetventile als Druckluftventile zum Einsatz.According to the invention it is provided that the compressed air valves for controlling the individual air chambers on the measuring mattress or another inflatable object with several air chambers are arranged on a printed circuit board. The distribution element according to the invention has a connection for the supply of compressed air and a large number of compressed air outlets which are connected to the corresponding air chambers, for example of the measuring mattress. Supply channels to the compressed air valves and outlet channels from the compressed air valves to the compressed air outlets are arranged within this distribution element, which allows a particularly space-saving design of the valve system according to the invention. Likewise, only standard components are required, in particular commercially available solenoid valves are used as compressed air valves.

In einer besonders bevorzugten Ausführung der Erfindung ist vorgesehen, dass in dem zumindest einen Abgangskanal zumindest ein Drucksensor angeordnet ist. Die Anordnung eines Drucksensors in dem Abgangskanal erlaubt eine besonders zuverlässige Messung des in dem Abgangskanal und in der Folge in der dem Druckluftabgang zugeordneten Luftkammer der Messmatratze aktuell herrschenden Überdrucks. Diese Messung erfolgt insbesondere auch unabhängig von dem in dem Druckluftzulauf herrschenden Druck sowie den weiteren einzelnen Druckluftabgängen und kann insbesondere bei geschlossenem Druckluftventil durchgeführt werden.In a particularly preferred embodiment of the invention, it is provided that at least one pressure sensor is arranged in the at least one outlet channel. The arrangement of a pressure sensor in the outlet duct allows a particularly reliable measurement of the currently prevailing overpressure in the outlet duct and subsequently in the air chamber of the measuring mattress associated with the compressed air outlet. This measurement also takes place, in particular, independently of the pressure prevailing in the compressed air inlet and the other individual compressed air outlets, and can be carried out in particular when the compressed air valve is closed.

Diese Messung im Abgangskanal wird insbesondere dann besonders zuverlässig, wenn der zumindest Abgangskanal zumindest eine Sensoröffnung aufweist, die vorzugsweise über die erste Oberfläche des Verteilungselements zugänglich ist, wobei in der Sensoröffnung der zumindest eine Drucksensor angeordnet ist. Durch diese Sensoröffnung ist zudem ein rasches Austauschen eines allfälligen defekten Drucksensors möglich.This measurement in the outflow duct is particularly reliable when the at least outflow duct has at least one sensor opening which is preferably accessible via the first surface of the distribution element, the at least one pressure sensor being arranged in the sensor opening. This sensor opening also makes it possible to quickly replace any defective pressure sensor.

In einer weiteren bevorzugten Ausführung der Erfindung ist zwischen dem zumindest einen Druckluftventil und der ersten Oberfläche der Leiterplatte eine Druckluftkammer vorgesehen, in die die zumindest eine Zufuhröffnung mündet. Somit wird zwischen jedem einzelnen Druckluftventil und der ersten Oberfläche der Leiterplatte eine eigenständige Druckluftkammer ausgebildet, die eine gleichmäßige Zufuhr der Druckluft zum Druckluftventil erlaubt.In a further preferred embodiment of the invention, a compressed air chamber is provided between the at least one compressed air valve and the first surface of the printed circuit board, into which the at least one supply opening opens. Therewith an independent compressed air chamber is formed between each individual compressed air valve and the first surface of the circuit board, which allows the compressed air to be supplied evenly to the compressed air valve.

Ein besonders platzsparenden Aufbau des erfindungsgemäßen Ventilsystems wird erreicht, wenn die zumindest eine Abgangsöffnung die Druckluftkammer durchdringt und gegen die vorzugsweise als Ringspalt ausgebildete Druckluftkammer fluiddicht abgedichtet ist.A particularly space-saving design of the valve system according to the invention is achieved if the at least one outlet opening penetrates the compressed air chamber and is sealed in a fluid-tight manner against the compressed air chamber, which is preferably designed as an annular gap.

Da Druckluftventile im Betrieb für gewöhnlich Hitze entwickeln, ist in einer weiteren Ausführung der Erfindung vorgesehen, dass in dem Verteilungselement zumindest eine Aufnahme für die Anordnung eines Sensors und/oder Schalterelements, insbesondere zumindest eines Temperaturschalters vorgesehen sind. Sollte die Temperatur des Verteilungselements einen vorgegebbaren Schwellwert übersteigen, so wird das gesamte Ventilsystem stromlos gesetzt, um eine Überhitzung insbesondere der Dichtelemente zu verhindern.Since compressed air valves usually develop heat during operation, a further embodiment of the invention provides that at least one receptacle for arranging a sensor and/or switch element, in particular at least one temperature switch, is provided in the distribution element. Should the temperature of the distribution element exceed a predetermined threshold value, the entire valve system is de-energized in order to prevent overheating of the sealing elements in particular.

Eine besonders einfache Fertigung des erfindungsgemäßen Verteilungselements ist gegeben, wenn es aus Metall, insbesondere aus Aluminium oder einer Aluminiumlegierung gefertigt ist.The distribution element according to the invention is particularly easy to manufacture if it is made of metal, in particular aluminum or an aluminum alloy.

Das erfindungsgemäße Ventilsystem hat sich insbesondere bei der Verwendung zur Steuerung des Drucks innerhalb zumindest einer Luftkammer einer Messmatratze bewährt.The valve system according to the invention has proven particularly effective when used to control the pressure within at least one air chamber of a measuring mattress.

Im Folgenden wird anhand eines nicht-einschränkenden Ausführungsbeispiels mit zugehörigen Figuren die Erfindung näher erläutert. Darin zeigen

Fig. 1
das erfindungsgemäße Ventilsystem in einer schematischen Darstellung;
Fig. 2
ein Verteilungselement des Ventilsystems aus Fig. 1 in einer perspektivischen Detailansicht;
Fig. 3
das erfindungsgemäße Ventilsystem in einer Explosionsdarstellung;
Fig. 4
eine Detailansicht der Anordnung eines Druckventils in dem Ventilsystem in einer Explosionsdarstellung; und
Fig. 5
eine schematische Darstellung einer Messmatratze mit zugeordnetem Ventilsystem aus Fig. 1.
The invention is explained in more detail below on the basis of a non-limiting exemplary embodiment with associated figures. show in it
1
the valve system according to the invention in a schematic representation;
2
a distribution element of the valve system 1 in a perspective detailed view;
3
the valve system according to the invention in an exploded view;
4
a detailed view of the arrangement of a pressure valve in the valve system in an exploded view; and
figure 5
a schematic representation of a measuring mattress with associated valve system 1 .

In der Fig. 1 ist das erfindungsgemäße Ventilsystem 100 in einer perspektivischen Darstellung gezeigt, das in dieser Ausführung der Erfindung in einem Gehäuse 200 untergebracht ist. In diesem Gehäuse 200 ist eine Leiterplatte 110 angeordnet, auf deren erster Oberfläche 111 Druckluftventile 120 fluiddicht montiert sind. Diese Druckluftventile 120 sind beispielsweise an sich bekannte Magnetventile, wie sie üblicherweise in pneumatischen Systemen zum Einsatz kommen.In the 1 shows the valve system 100 according to the invention in a perspective view, which in this embodiment of the invention is in a housing 200 is housed. A printed circuit board 110 is arranged in this housing 200, on the first surface 111 of which compressed air valves 120 are mounted in a fluid-tight manner. These compressed air valves 120 are, for example, magnetic valves that are known per se and are typically used in pneumatic systems.

Zwischen Leiterplatte 110 und Gehäuseboden 201 ist an einer zweiten Oberfläche 112 der Leiterplatte 110 ein im Wesentlichen plattenförmiges Verteilungselement 130 angeordnet, das über Druckluftabgänge 140 verfügt, die jeweils einem Druckventil 120 zugeordnet sind. Des Weiteren ist an diesem Verteilungselement 130 ein Pumpenanschluss 150 angeordnet, der mit einer Druckluftpumpe 1200 (Fig. 5) verbindbar ist, die das erfindungsgemäße Ventilsystem 100 mit Druckluft versorgt.An essentially plate-shaped distribution element 130 is arranged between circuit board 110 and housing base 201 on a second surface 112 of circuit board 110 , which distribution element has compressed air outlets 140 , each of which is associated with a pressure valve 120 . Furthermore, a pump connection 150 is arranged on this distribution element 130, which is connected to a compressed air pump 1200 ( figure 5 ) can be connected, which supplies the valve system 100 according to the invention with compressed air.

Zusätzlich sind auf der Leiterplatte 110 weitere Sensor- und Steuerungselemente 310, 320 angeordnet, die der Überwachung und Steuerung des erfindungsgemäßen Ventilsystems 100 dienen.In addition, further sensor and control elements 310, 320 are arranged on the printed circuit board 110, which serve to monitor and control the valve system 100 according to the invention.

In der Fig. 2 ist das erfindungsgemäße Verteilungselement 130 im Detail dargestellt. Auf einer ersten Oberfläche 131 des Verteilungselements 130, die in Gebrauchslage der zweiten Oberfläche 112 der Leiterplatte 110 zugewandt ist, ist ein mäanderförmiger Druckluftzulauf 132 angeordnet, der jeweils über Zufuhrbohrungen in der Leiterplatte 110 mit den Druckluftventilen 120 in fluider Verbindung steht. Dieser Druckluftzulauf 132 ist in Gebrauchslage über die zweite Oberfläche 112 der Leiterplatte 110 durch diese abgedichtet.In the 2 the distribution element 130 according to the invention is shown in detail. A meandering compressed air inlet 132 is arranged on a first surface 131 of the distribution element 130, which faces the second surface 112 of the circuit board 110 in the position of use. In the position of use, this compressed air inlet 132 is sealed by the circuit board 110 via the second surface 112 thereof.

Über den Pumpenanschluss 150 wird Druckluft in den Druckluftzulauf 132 eingeströmt. Die mäanderförmige Ausbildung des Druckluftzulaufs 132 erlaubt eine gleichmäßige Zufuhr der Druckluft zu den Druckluftventilen 120.Compressed air flows into the compressed air inlet 132 via the pump connection 150 . The meandering design of the compressed air inlet 132 allows the compressed air to be supplied evenly to the compressed air valves 120.

In dem Druckluftzulauf 132 sind zudem Abgangsöffnungen 133 angeordnet, die jeweils ein Druckluftventil 120 mit einem Abgangskanal innerhalb des Verteilungselements 130 und in der Folge mit einem Druckluftabgang 140 verbinden.Outlet openings 133 are also arranged in the compressed air inlet 132 and each connect a compressed air valve 120 to an outlet channel within the distribution element 130 and subsequently to a compressed air outlet 140 .

Des Weiteren sind an der ersten Oberfläche 131 des Verteilungselements 130 Sensoröffnungen 134 angeordnet. Diese Sensoröffnungen 134 sind in Gebrauchslage ebenfalls gegenüber zweiten Oberfläche 112 der Leiterplatte 110 abgedichtet.Furthermore, sensor openings 134 are arranged on the first surface 131 of the distribution element 130 . In the position of use, these sensor openings 134 are likewise sealed off from the second surface 112 of the printed circuit board 110 .

Schließlich verfügt das erfindungsgemäße Verteilungselement 130 an einer Seitenfläche 131A über Ausnehmungen 160 für die Aufnahme von Temperaturschaltern (nicht gezeigt). Da die Druckluftventile 120 im Betrieb üblicherweise eine starke Wärmeentwicklung aufweisen, überwachen diese Temperaturschalter die Temperatur des Verteilungselements 130, das vorzugsweise aus Aluminium oder einer Aluminiumlegierung gefertigt ist. Sobald ein bestimmter, vorgebbarer Temperatur-Schwellwert überschritten wird, wird das erfindungsgemäße Ventilsystem 100 stromlos geschalten. Auf diese Weise werden Beschädigungen insbesondere von Dichtelementen bzw. der Druckluftventile 120 vermieden. Weitere derartige Temperaturschalter können beispielsweise auch auf der Leiterplatte 110 bzw. am Gehäuse 200 vorgesehen sein.Finally, the distribution element 130 according to the invention has recesses 160 for accommodating temperature switches (not shown) on a side surface 131A. Since the compressed air valves 120 usually generate a lot of heat during operation, these temperature switches monitor the temperature of the distribution element 130, which is preferably made of aluminum or an aluminum alloy. As soon as a specific, definable temperature threshold value is exceeded, the valve system according to the invention 100 de-energized. In this way, damage, in particular to sealing elements or the compressed air valves 120, is avoided. Further temperature switches of this type can also be provided on the printed circuit board 110 or on the housing 200, for example.

In den Figs. 3 und 4 ist in einer Explosionsdarstellung schematisch der Aufbau des erfindungsgemäßen Ventilsystems 100 gezeigt.In the figs 3 and 4 The structure of the valve system 100 according to the invention is shown schematically in an exploded view.

Die Druckluftventile 120 sind mittels eines ersten Dichtrings 170A und eines zweiten Dichtrings 170B gegenüber der ersten Oberfläche 111 der Leiterplatte 110 abgedichtet. Hierbei ist der zweite Dichtring 170B mit seinem kleineren Durchmesser innerhalb des Bereichs des ersten Dichtrings 170A, insbesondere konzentrisch angeordnet. An der ersten Oberfläche 131 des Verteilungselements 130 ist ein weiterer dritter Dichtring 170C angeordnet, der mit der zweiten Oberfläche 112 der Leiterplatte 110 zusammenwirkt und von einem weiteren den Druckluftzulauf 132 umlaufenden Dichtring 171D umschlossen ist.The compressed air valves 120 are sealed off from the first surface 111 of the circuit board 110 by means of a first sealing ring 170A and a second sealing ring 170B. Here, the second sealing ring 170B is arranged with its smaller diameter within the area of the first sealing ring 170A, in particular concentrically. A further, third sealing ring 170C is arranged on the first surface 131 of the distribution element 130 and interacts with the second surface 112 of the printed circuit board 110 and is surrounded by a further sealing ring 171D running around the compressed air inlet 132 .

In der Leiterplatte 110 ist zumindest eine Zufuhröffnung (nicht dargestellt) vorgesehen, die in einem Bereich zwischen dem ersten Dichtring 170A und dem zweiten Dichtring 170B angeordnet ist. Des Weiteren befindet sich eine Abgangsbohrung 113 in der Leiterplatte 110, die das jeweilige Druckventil 120 mit der jeweiligen Abgangsöffnung 133 in dem Verteilungselement 130 und in der Folge mit dem jeweiligen Abgangskanal im Verteilungselement 130 verbindet. Diese Abgangsbohrung 113 ist durch den zweiten Dichtring 170A gegenüber dem Druckventil 120 und der ersten Oberfläche 111 der Leiterplatte 110, sowie durch den dritten Dichtring 170C gegenüber der ersten Oberfläche 131 des Verteilungselements 130 sowie der zweiten Oberfläche 111 der Leiterplatte 110 fluiddicht abgedichtet.At least one supply opening (not shown) is provided in the printed circuit board 110 and is arranged in a region between the first sealing ring 170A and the second sealing ring 170B. Furthermore, there is an outlet hole 113 in the printed circuit board 110, which connects the respective pressure valve 120 to the respective outlet opening 133 in the distribution element 130 and subsequently to the respective outlet channel in the distribution element 130. This outlet bore 113 is sealed fluid-tight by the second sealing ring 170A with respect to the pressure valve 120 and the first surface 111 of the circuit board 110, and by the third sealing ring 170C with respect to the first surface 131 of the distribution element 130 and the second surface 111 of the circuit board 110.

Wird nun Druckluft über den Pumpenanschluss 150 in den Druckluftzulauf 132 geleitet, während das Druckluftventil 120 geschlossen ist, so ist die Druckluft zwischen der ersten Oberfläche 111 der Leiterplatte 110 und dem Boden des Druckluftventils 120 in der durch die beiden Dichtringe 170A, 170B gebildeten Druckluftkammer 172, die als Ringspalt ausbildet ist, eingeschlossen.If compressed air is now fed via the pump connection 150 into the compressed air inlet 132 while the compressed air valve 120 is closed, the compressed air is between the first surface 111 of the circuit board 110 and the bottom of the compressed air valve 120 in the compressed air chamber 172 formed by the two sealing rings 170A, 170B , which is designed as an annular gap included.

Sobald das Druckluftventil 120 geöffnet wird, strömt die Druckluft durch das Druckluftventil 120 und gelangt über die Abgangsbohrung 113 durch die Leiterplatte 110 hindurch in die Abgangsöffnung 133 im Verteilungselement 130, um anschließend zu den Druckluftabgängen 140 geleitet zu werden.As soon as the compressed air valve 120 is opened, the compressed air flows through the compressed air valve 120 and passes through the circuit board 110 via the outlet hole 113 into the outlet opening 133 in the distribution element 130 in order to then be routed to the compressed air outlets 140 .

Diese Druckluftabgänge 140 sind an die jeweiligen Luftkammern 1110 des aufblasbaren Objekts 1000 (Fig. 5) angeschlossen. Über die Druckluftventile 120 können diese Luftkammern 1110 unabhängig voneinander mit Druckluft in unterschiedlichen Drücken beaufschlagt werden. Hierbei wird die Druckluft zunächst über das Verteilungselement 130 an das jeweilige auf der Leiterplatte 110 angeordneten Druckluftventil 120 herangeführt, und bei geöffnetem Druckluftventil 120 erneut durch die Leiterplatte 110 hindurch in das Verteilungselement 130 zurückgeführt, und an den entsprechende Druckluftabgang 140 geleitet.These compressed air outlets 140 are connected to the respective air chambers 1110 of the inflatable object 1000 ( figure 5 ) connected. Compressed air at different pressures can be applied to these air chambers 1110 independently of one another via the compressed air valves 120 . Here, the compressed air is first via the distribution element 130 to the respective compressed air valve 120 arranged on the printed circuit board 110, and when the compressed air valve 120 is open, again fed back through the printed circuit board 110 into the distribution element 130 and routed to the corresponding compressed air outlet 140.

Zur Messung und Steuerung des Drucks in den einzelnen Luftkammern 1110 ist bevorzugterweise ein System von Drucksensoren 180 vorgesehen. Bei der hier dargestellten Ausführung der Erfindung (Fig. 4) ist ein Drucksensor 180 im Bereich der Sensorbohrung 135 jedes Druckluftabgangs 140 angeordnet. Hierbei ist die Sensorbohrung 135 an der zweiten Oberfläche 112 der Leiterplatte 110 angeordnet und mittels eines Dichtrings 170E fluiddicht abgedichtet. Dieser Drucksensor 180 hat die Aufgabe, den Differenzialdruck im Druckluftabgang 140 bzw. dem daran angeschlossenen aufblasbaren Objekt zum Außendruck zu bestimmen.A system of pressure sensors 180 is preferably provided for measuring and controlling the pressure in the individual air chambers 1110 . In the embodiment of the invention shown here ( 4 ) a pressure sensor 180 is arranged in the area of the sensor bore 135 of each compressed air outlet 140 . In this case, the sensor bore 135 is arranged on the second surface 112 of the circuit board 110 and is sealed in a fluid-tight manner by means of a sealing ring 170E. This pressure sensor 180 has the task of determining the differential pressure in the compressed air outlet 140 or the inflatable object connected to it in relation to the external pressure.

Zusätzlich ist ein Absolutdrucksensor 181 im Druckluftzulauf 132 angeordnet, der den Absolutdruck im Druckluftzulauf 132 überwacht. Mithilfe dieses Absolutdrucksensors 181 kann ein allfälliges defektes Druckventil 120 durch einen unerwünschten Druckanstieg im Druckluftzulauf 132 detektiert werden, obwohl sich der Druck im Druckluftabgang 140 selbst nicht verändert.In addition, an absolute pressure sensor 181 is arranged in the compressed air inlet 132, which monitors the absolute pressure in the compressed air inlet 132. This absolute pressure sensor 181 can be used to detect any defective pressure valve 120 due to an undesired increase in pressure in the compressed air inlet 132, although the pressure in the compressed air outlet 140 itself does not change.

In der Fig. 5 schließlich ist schematisch eine Messmatratze 1000 mit einem Grundkörper 1100 sowie röhrenförmigen Luftkammern 1110 dargestellt, wobei jede Luftkammer 1110 getrennt mit Druckluft beaufschlagbar ist. Hierfür ist das erfindungsgemäße Ventilsystem 100 an einer Pumpe 1200 für die erforderliche Druckluft angeschlossen, wobei die Druckluft über die Druckluftventile 120 auf die oben beschriebene Weise an diese Luftkammern 1110 geleitet wird. Die Druckmessung in den einzelnen Luftkammern 1110 erforlgt hierbei über Drucksensoren 120, die zwischen der Messmatratze 1000 und den Druckluftventilen 120, die, wie insbesondere in der Fig. 4 gezeigt, innerhalb des erfindungsgemäßen Ventilsystems 100 angeordnet sind.In the figure 5 Finally, a measuring mattress 1000 is shown schematically with a base body 1100 and tubular air chambers 1110, each air chamber 1110 being pressurizable separately with compressed air. For this purpose, the valve system 100 according to the invention is connected to a pump 1200 for the required compressed air, the compressed air being routed to these air chambers 1110 via the compressed air valves 120 in the manner described above. The pressure is measured in the individual air chambers 1110 via pressure sensors 120, which are located between the measuring mattress 1000 and the compressed air valves 120, as in particular in FIG 4 shown, are arranged within the valve system 100 according to the invention.

Es versteht sich, dass die vorliegende Erfindung nicht auf die oben beschriebene Ausführung beschränkt ist. Insbesondere können unterschiedliche Druckluftventile sowie deren unterschiedliche Anordnung auf einer Leiterplatte vorgesehen sein. Erfindungswesentlich ist das Verteilungselement, das aufgrund seiner stabilen Ausführung aus Metall eine zuverlässige und einfache Verteilung der Druckluft zu den einzelnen Druckluftventilen erlaubt. Die erfindungsgemäße Anordnung von Drucksensoren in diesem Verteilungselement im Bereich der Druckluftabgänge erlaubt eine besonders präzise und kontrollierte Messung des im aufblasbaren Objekt herrschenden Überdrucks. Selbstverständlich ist das erfindungsgemäße Ventilsystem nicht nur für den Druckaufbau in dem aufblasbaren Objekt geeignet, sondern erlaubt zudem eine kontrollierte Druckminderung in ausgewählten Bereichen des aufblasbaren Objekts, insbesondere in den Luftkammern einer Messmatratze.It goes without saying that the present invention is not limited to the embodiment described above. In particular, different compressed air valves and their different arrangement can be provided on a printed circuit board. The distribution element is essential to the invention, which, due to its stable metal design, allows reliable and simple distribution of the compressed air to the individual compressed air valves. The arrangement of pressure sensors according to the invention in this distribution element in the area of the compressed air outlets allows a particularly precise and controlled measurement of the overpressure prevailing in the inflatable object. Of course, the valve system according to the invention not only suitable for the pressure build-up in the inflatable object, but also allows a controlled reduction in pressure in selected areas of the inflatable object, in particular in the air chambers of a measuring mattress.

Claims (9)

  1. Valve system (100) having at least two compressed air valves (120) for an object which can be pressurized/inflated by means of compressed air, having at least two air chambers (1110), in particular a mattress (1000), which are independent of one another, wherein at least one compressed-air valve (120) can be associated with each air chamber (1110), wherein the at least one compressed-air valve (120) is arranged on a first surface (111) of a printed circuit board (110), and a second surface (112) of the printed circuit board (110) opposite the first surface (111) is designed as a sealing surface for at least one compressed-air inlet (132), wherein a substantially plate-shaped distributing element (130) having a first surface (131) is provided, wherein a connection (150) for the supply of compressed air is provided at the distributing element (130) which is in fluid connection with the at least one compressed-air inlet (132), wherein the at least one compressed-air inlet (132) is arranged on the first surface (131) of the distributing element (130), wherein the at least one compressed-air inlet (132) is in fluid connection with the at least one compressed-air valve (120) via at least one supply opening in the printed circuit board (110), characterised in that at least one outlet bore (113) is provided in the printed circuit board (110), wherein the at least one outlet bore (113) connects the at least one compressed-air valve (120) in a fluid-tight manner to at least one outlet conduit arranged within the distributing element (130) via at least one outlet opening (133) arranged in the distributing element (130), and wherein the at least one outlet conduit arranged within the distributing element (130) can be connected to the object that can be pressurized/inflated by means of compressed air.
  2. Valve system (100) according to claim 1, characterised in that at least one pressure sensor (180) is arranged in the at least one outlet conduit.
  3. Valve system (100) according to claim 2, characterised in that the at least outlet conduit has at least one sensor opening (134), which is preferably accessible via the first surface (131) of the distributing element (130), wherein the at least one pressure sensor (180) is arranged in the sensor opening (134).
  4. Valve system (100) according to one of claims 1 to 3, characterised in that a compressed-air chamber (172) is provided between the at least one compressed-air valve (120) and the first surface (111) of the printed circuit board (110), into which the at least one supply opening opens.
  5. Valve system (100) according to claim 4, characterised in that the compressed-air chamber (172) is formed as an annular gap.
  6. Valve system (100) according to one of claims 1 to 5, characterised in that at least one receptacle (160) for the arrangement of a sensor and/or switch element, in particular a temperature switch, is provided in the distributing element (130).
  7. Valve system (100) according to one of claims 1 to 6, characterised in that the distributing element (130) is made of metal, in particular of aluminum or an aluminum alloy.
  8. Use of the valve system (100) according to one of claims 1 to 7 for controlling the pressure within at least one air chamber (1110) of at least one measuring mattress (1000).
  9. Measuring mattress (1000) having at least two air chambers (1110) which can be inflated by means of compressed air, wherein the supply and discharge of compressed air is regulated by means of compressed air valves (120), characterised in that a valve system (100) according to one of claims 1 to 7 is arranged on the measuring mattress (1000) for the regulation.
EP20793255.9A 2019-10-16 2020-10-15 Valve system Active EP4044872B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50889/2019A AT523087B1 (en) 2019-10-16 2019-10-16 VALVE SYSTEM
PCT/AT2020/060374 WO2021072471A1 (en) 2019-10-16 2020-10-15 Valve system

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EP4044872A1 EP4044872A1 (en) 2022-08-24
EP4044872B1 true EP4044872B1 (en) 2023-06-07
EP4044872C0 EP4044872C0 (en) 2023-06-07

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US (1) US20240148159A1 (en)
EP (1) EP4044872B1 (en)
AT (1) AT523087B1 (en)
ES (1) ES2953090T3 (en)
WO (1) WO2021072471A1 (en)

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US20220346562A1 (en) * 2021-04-29 2022-11-03 Zachariah Clarence Holtquist Mattress

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Publication number Priority date Publication date Assignee Title
US5904172A (en) * 1997-07-28 1999-05-18 Select Comfort Corporation Valve enclosure assembly
US7657956B2 (en) * 2006-08-04 2010-02-09 Hill-Rom Services, Inc. Patient support
US7886387B2 (en) * 2007-01-26 2011-02-15 Rapid Air Llc Multiple configuration air mattress pump system
AT507658B1 (en) * 2009-10-21 2010-07-15 Hans Malzl LIEGE SIMULATOR
US8397763B2 (en) 2009-10-23 2013-03-19 Bend Tech, LLC Low pressure valve assembly
US10851795B2 (en) * 2015-10-16 2020-12-01 Intex Marketing, Ltd. Multifunctional air pump
ES1157758Y (en) * 2016-04-27 2016-08-22 Descansare Sleep Lab S L AIR FLOW CONTROL DEVICE
US10352804B2 (en) * 2016-09-09 2019-07-16 Douglas James Moniaci System and method of individually pressurizing a plurality of air tubes to provide a pressure adjustable bed system
WO2019148573A1 (en) * 2018-02-01 2019-08-08 江苏亿美电器有限公司 Inflator pump, operating method and application thereof

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ES2953090T3 (en) 2023-11-08
AT523087A1 (en) 2021-05-15
EP4044872A1 (en) 2022-08-24
AT523087B1 (en) 2021-08-15
WO2021072471A1 (en) 2021-04-22
US20240148159A1 (en) 2024-05-09
EP4044872C0 (en) 2023-06-07

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