EP4649245A1 - Druckausgleichselement und verfahren zum verbau dieses druckausgleichelements - Google Patents
Druckausgleichselement und verfahren zum verbau dieses druckausgleichelementsInfo
- Publication number
- EP4649245A1 EP4649245A1 EP23837610.7A EP23837610A EP4649245A1 EP 4649245 A1 EP4649245 A1 EP 4649245A1 EP 23837610 A EP23837610 A EP 23837610A EP 4649245 A1 EP4649245 A1 EP 4649245A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- pressure compensation
- test
- compensation element
- pressure
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
Definitions
- the invention relates to a pressure compensation element and a method for installing such a pressure compensation element.
- DE 102014 105 193 A1 discloses a pressure compensation label for sticking to a surface and a method for producing such a pressure compensation element.
- pressure compensation elements which have a membrane, whereby this membrane is air- and moisture-impermeable in at least one direction, are applied to a carrier film.
- This carrier film with the pressure compensation elements is rolled up to form a film roll.
- the film roll is placed in a dispenser in the production facility. This dispenser separates the pressure compensation elements and places them in such a way that a manipulator can pick up individual pressure compensation elements and then apply them to an interface provided for pressure compensation on a drive unit.
- a flow test device is applied to the pressure compensation element and with it a negative pressure is applied to the pressure compensation element.
- This negative pressure results in an air flow through the pressure compensation element; this air flow can be measured and compared with a target value.
- the pressure compensation element When the pressure compensation element is applied to the interface on the drive unit, it can be elastically deformed, whereby the pressure compensation element or parts of the pressure compensation element return to their original state after the elastic deformation, a considerable amount of time can pass. However, this elastic deformation leads to a change in the possible air flow through the pressure compensation element. In other words, a pressure compensation element shows different flow values immediately after being applied to the interface than a considerable time after being applied.
- the invention proposes an improved pressure compensation element and a method for installing it. This object is achieved by a pressure compensation element according to the first patent claim or by a method for installing it. Preferred developments of the invention are the subject of the dependent patent claims.
- a pressure equalization element is to be understood as a device which enables pressure equalization between an interior space and the environment adjacent to this interior space by means of an air flow, whereby this air flow passes through this pressure equalization element and whereby the pressure equalization element prevents or at least hinders the uncontrolled entry of foreign substances, in particular moisture and particles.
- Such pressure equalization elements are known in different designs, in particular of drive devices such as a gearbox and then as so-called gearbox ventilators, whereby the present invention relates to a pressure equalization element for gluing onto a surface of a housing or other object provided with a pressure equalization opening, whereby such a pressure equalization element is also referred to as a pressure equalization label because it can be glued onto a surface, in particular similar to a label.
- the pressure equalization element covers an opening in a housing so that an air flow from or into this housing passes through this pressure equalization element.
- a pressure equalization device with several such pressure equalization elements, so that, for example, only the incoming or only the outgoing or only a partial air flow passes through such a pressure equalization element, or only a single such pressure equalization element is provided and thus both the incoming and the outgoing air flow passes through such a pressure equalization element.
- the proposed pressure compensation element is constructed from several layers, whereby such a layer can have a film as a component or can consist of a film can consist of, whereby a film in this sense is to be understood as a thin-layer component, as well as in general, whereby a pressure compensation element with films as a component is basically known from the prior art, in particular from the above-mentioned DE 102014 105 193 A1.
- the proposed pressure compensation element has a first film as a component, wherein this first film is designed with a first surface for gluing onto a surface, in particular a component surface, of a housing.
- the pressure compensation element can therefore be glued directly onto this component surface using this first surface of the first film.
- This first surface preferably has an adhesive layer which is designed to form a material connection with the component surface when the pressure compensation element is installed.
- the pressure equalization element also has a second film as a component, wherein this second film is connected to the first film, at least in sections, preferably in a materially bonded manner, on a second surface of the first film opposite the first surface.
- the first and second films are connected to one another geometrically, lying flat on top of one another.
- the first and second films are geometrically designed differently and are not connected to one another over their entire surface in order to form at least one ventilation channel between these two films, which enables the de-airing or ventilation loft flow, the so-called pressure equalization air flow, during normal operation of the pressure equalization element.
- the pressure equalization element further comprises a membrane film which is arranged geometrically between the first and the second film and thus also on the second surface of the first film.
- the second film is further preferably arranged at a distance from this membrane film so that an air flow can pass through this membrane film.
- the membrane film is functionally designed such that a pressure equalization flow passes through it, which enables pressure equalization during normal operation of the pressure equalization element.
- the first film further comprises a pressure equalization recess, in particular to enable this pressure equalization flow, and this membrane film covers this pressure equalization recess. In particular, the membrane film is positioned with this first film during normal operation of the pressure equalization element.
- the invention relates to an embodiment of the pressure compensation element before its installation for scheduled operation, wherein the pressure compensation element in this state before installation on the surface of the housing is received with the first surface of the first film on a carrier film and wherein the carrier film can be removed from this first surface for installation and is removed from this first surface during installation.
- the carrier film also has a test recess and wherein this test recess is arranged in the carrier film such that this test recess in the carrier film and the pressure compensation recess in the first film overlap at least in some areas and preferably completely.
- a test air flow can be guided through the membrane film even before its scheduled installation, since the membrane film is not completely covered by the carrier film and thus a functional test of the pressure compensation element is possible before its scheduled installation and thus it can be prevented or at least the probability reduced that a non-functional pressure compensation element is installed.
- the pressure compensation element according to the invention enables the testing of the pressure compensation element immediately before installation and thus reduces any rework that may be necessary.
- this carrier film has a plurality of test recesses, wherein these test recesses or at least two of these test recesses are separated from one another by a carrier film web or by a plurality of carrier film webs.
- the test recesses can have any geometric shape and the carrier film webs are then formed by the material regions of the carrier film between these test recesses. It is further proposed that at least one or a plurality of these test recesses overlap with the pressure compensation recess in the first film, at least in some areas or completely. In particular, this overlap results in a fluid-conducting connection through the carrier film to the membrane film, thus enabling functional testing of the pressure compensation element with the carrier film applied, i.e.
- At least one of these carrier film webs covers this test recess in the first film, at least in some areas.
- such a covering of the membrane film by such a carrier film web provides mechanical protection for the membrane film and in particular through this protection of the The pressure compensation element can be transported or handled safely.
- the carrier film has at least one test recess and the at least one test recess and the pressure equalization recess are arranged so as to be congruent with one another.
- the pressure equalization recess in the first film lies completely within the test recess in the carrier film, so that unhindered flow through the pressure equalization recess through the test recess to the membrane film is possible.
- such an arrangement in which the pressure equalization recess lies completely within the test recess is also to be understood as congruent in this sense.
- a simple test of the flow through the membrane film is possible.
- this method comprises at least the steps:
- the test device preferably has a suction or pressure bell that is attached to the pressure compensation element in order to generate this pressure difference to cause the test air flow.
- the test air flow is recorded directly or indirectly to evaluate the pressure compensation element, in particular whether it is suitable for installation (OK status) or not (NOK status).
- the recording is understood to mean in particular a measurement of the test air flow or preferably a pressure difference.
- the recorded test air flow or the value recorded for it is then compared with a target test air flow.
- a target test flow can in particular be a theoretically or experimentally determined target value or target range by means of which the functionality of the pressure compensation element being tested can be assessed.
- Fig.2 a top view of a carrier film with several test recesses.
- Figure 1 shows a pressure equalization element 1 for gluing onto a housing, the housing being provided with a pressure equalization opening.
- the pressure equalization element 1 has a first film 2.
- This first film 2 has a first surface 3 which is for gluing onto the surface of this housing.
- the pressure equalization element 1 also has a second film 4 which is attached to the second surface 5 of this first film 2 opposite the first surface 3.
- This second film 2 is partially connected to the first film 2 on this second surface 5.
- the membrane film 6 is arranged geometrically between the first and second films, the membrane film 6 is arranged on the second surface 5 of the first film 2.
- the first film 2 has a pressure equalization recess 7 which is covered by the membrane film 6.
- the pressure equalization element 1 is shown in its state before installation on the surface of the housing, therefore it is held with the first film 2 with its first surface 3 on a carrier film 8.
- the carrier film 8 can be understood as a protective film for an adhesive coating on this first surface 3. Furthermore, the carrier film 8 can be removed from this first surface 3 for installation; figuratively speaking, the carrier film 8 is peeled off the first surface 3 and the adhesive coating is exposed.
- gluing i.e. when installing the pressure equalization element on the housing, the pressure equalization element is pressed on, which can lead to a temporary change in the function of the membrane film 6, which makes it difficult to carry out a timely functional test of the pressure equalization element after it has been installed.
- the carrier film 8 has a test recess 9, wherein the test recess 9 is formed in such a way and the carrier film 8 is arranged on the first surface in such a way that the test recess 9 and the pressure compensation recess 7 lie congruently on top of one another.
- a test air flow 11 can be generated through the membrane film 6 by means of a corresponding pressure difference when the carrier film 8 is still arranged on the pressure compensation element 1 or, in other words, it is thus possible to test the pressure compensation element for function shortly before it is installed and to avoid feeding non-functional pressure compensation elements 1 into production in the first place.
- Figure 2 shows an embodiment of the invention in a view of the carrier film 8.
- the carrier film 8 has a plurality of test recesses 9 which are separated from one another by carrier film webs 10.
- the carrier film 8 is also arranged in such a way that these test recesses 9 overlap with the pressure compensation recess (not visible in this view) and the carrier film webs also cover this test recess at least in part.
- a roll of such pressure compensation elements is delivered, with a large number of pressure compensation elements wound onto a carrier film on this roll, comparable to a roll on which labels are wound onto a carrier film.
- This roll of pressure compensation elements can be inserted into a dispenser, which separates the pressure compensation elements so that a robot gripper can pick them up individually.
- a production robot with this robot gripper then installs the pressure compensation elements on the housing with a pressure compensation recess.
- the installed pressure compensation element can then be covered with a second robot gripper with a negative or positive pressure bell and in particular subjected to a negative pressure to test the pressure compensation element.
- This negative pressure creates a test air flow through the installed pressure compensation element, and the test air flow that flows through the pressure compensation element in the installed state is then measured. It has been shown that gluing/pressing on, i.e. the installation of the pressure compensation element, compresses the interface and this deformation can have an effect on the flow for a long time. For example, a pressure compensation element that has been installed directly after being glued on can have different flow values than a pressure compensation element that has been glued on for a long time, in particular several hours.
- the flow values are lower for a pressure compensation element that has been installed directly than for a pressure compensation element that has not been installed or has been installed for a long time, because a membrane film through which the flow occurs during pressure compensation is "compressed” and only relaxes again over time. If one assumes that there is a correlation between the "pressed” membrane film and the desired OK values for the flow of this, a functional test can also be carried out in this "pressed” state.
- the disadvantage of this procedure is that the specific limit value for the flow is not measured, but only the test air flow of a compressed membrane film can be recorded. For rework if the pressure compensation element is found to be not OK when measuring the test air flow (not OK status), complex rework is necessary.
- the carrier film which carries the pressure compensation elements when rolled up, in such a way that the carrier film has at least one recess, a so-called test recess, for each pressure compensation element.
- This test recess enables a functional test to be carried out for each pressure compensation element before it is removed from the carrier film, which is necessary for installation.
- a pressure bell can cover the pressure compensation element from at least one side and close it off with the carrier film, and a test pressure (positive or negative pressure) can be applied to the pressure compensation element in the pressure bell, thus generating a pressure difference which causes a test air flow through the pressure compensation element.
- the test air flow can flow through the opening in the carrier film. Since the membrane film of the pressure compensation element is not pressed in this process, unlike with a carrier film without a corresponding recess, a realistic functional test for the pressure compensation element can be carried out.
- the proposed embodiment for the carrier film enables a reduction in cycle time during installation and functional testing of pressure compensation elements.
- a defective pressure compensation element can be identified before it is installed, before it is applied. The risk of rework and loss of cycle time is thus reduced.
- a functional test of a non-pressed pressure compensation element can also be carried out in this way. The modeling of "flow values immediately after gluing" can be eliminated and error detection can thus be further improved.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023100454.9A DE102023100454A1 (de) | 2023-01-11 | 2023-01-11 | Druckausgleichselement und Verfahren zum Verbau dieses Druckausgleichelements |
| PCT/EP2023/087207 WO2024149593A1 (de) | 2023-01-11 | 2023-12-21 | Druckausgleichselement und verfahren zum verbau dieses druckausgleichelements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4649245A1 true EP4649245A1 (de) | 2025-11-19 |
Family
ID=89535849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23837610.7A Pending EP4649245A1 (de) | 2023-01-11 | 2023-12-21 | Druckausgleichselement und verfahren zum verbau dieses druckausgleichelements |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4649245A1 (de) |
| CN (1) | CN120202364A (de) |
| DE (1) | DE102023100454A1 (de) |
| WO (1) | WO2024149593A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2931850A1 (de) * | 1979-08-06 | 1981-02-19 | Zweckform Werk | Vorrichtung zur entlastung des innenraums eines mit geroestetem kaffee o.dgl. gefuellten kunststoffbeutels von unzulaessigem ueberdruck |
| JPS6057069A (ja) * | 1983-09-05 | 1985-04-02 | Fujimori Kogyo Kk | ガス抜き用弁 |
| EP1593478B1 (de) * | 2004-05-05 | 2006-09-27 | Schreiner Group GmbH & Co. KG | Verfahren zum Abdecken und Belüften eines Funktionsbereichs und Folienanordnung zur Durchführung des Verfahrens |
| DE102006016594A1 (de) * | 2006-04-06 | 2007-10-18 | Tesa Ag | Überdruckventil für einen Verpackungsbehälter |
| DE102014105193A1 (de) | 2014-04-11 | 2015-10-15 | Schreiner Group Gmbh & Co. Kg | Druckausgleichsetikett zum Aufkleben auf eine Oberfläche und Verfahren |
| CA3085286A1 (en) * | 2017-12-11 | 2019-06-20 | Nitto Denko Corporation | Internal pressure adjustment member and electrical component for transport equipment |
| DE102019123311A1 (de) * | 2019-08-30 | 2021-03-04 | Schreiner Group Gmbh & Co. Kg | Druckausgleichsetikett zum Ausgleichen eines Überdrucks |
| KR102256742B1 (ko) * | 2020-09-03 | 2021-06-01 | 주식회사 이노패키지 | 밀봉 컨테이닝 장치 |
-
2023
- 2023-01-11 DE DE102023100454.9A patent/DE102023100454A1/de active Pending
- 2023-12-21 CN CN202380079670.4A patent/CN120202364A/zh active Pending
- 2023-12-21 EP EP23837610.7A patent/EP4649245A1/de active Pending
- 2023-12-21 WO PCT/EP2023/087207 patent/WO2024149593A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN120202364A (zh) | 2025-06-24 |
| WO2024149593A1 (de) | 2024-07-18 |
| DE102023100454A1 (de) | 2024-07-11 |
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