EP3530171B1 - Halteplatte mit dichtungselement - Google Patents

Halteplatte mit dichtungselement Download PDF

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Publication number
EP3530171B1
EP3530171B1 EP18158393.1A EP18158393A EP3530171B1 EP 3530171 B1 EP3530171 B1 EP 3530171B1 EP 18158393 A EP18158393 A EP 18158393A EP 3530171 B1 EP3530171 B1 EP 3530171B1
Authority
EP
European Patent Office
Prior art keywords
passage opening
base plate
retainer plate
sealing element
plate according
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.)
Active
Application number
EP18158393.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3530171A1 (de
Inventor
Ralf Sauer
Jan Schultink
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.)
Eurofilters Holding NV
Original Assignee
Eurofilters Holding NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to ES18158393T priority Critical patent/ES2876182T3/es
Application filed by Eurofilters Holding NV filed Critical Eurofilters Holding NV
Priority to DK18158393.1T priority patent/DK3530171T3/da
Priority to PL18158393T priority patent/PL3530171T3/pl
Priority to EP18158393.1A priority patent/EP3530171B1/de
Priority to RU2020128181A priority patent/RU2753074C1/ru
Priority to CN201980014160.2A priority patent/CN111757696B/zh
Priority to US16/975,039 priority patent/US12042117B2/en
Priority to AU2019223037A priority patent/AU2019223037B2/en
Priority to PCT/EP2019/054179 priority patent/WO2019162307A1/de
Publication of EP3530171A1 publication Critical patent/EP3530171A1/de
Application granted granted Critical
Publication of EP3530171B1 publication Critical patent/EP3530171B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
    • A47L9/1436—Connecting plates, e.g. collars, end closures
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details 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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles

Definitions

  • the invention relates to a holding plate for a vacuum cleaner filter bag, the holding plate comprising a base plate with a passage opening arranged therein and a sealing element which is arranged at the edge of the passage opening.
  • Such holding plates are known in a variety of forms for arranging a vacuum cleaner filter bag connected therewith in a vacuum cleaner housing.
  • a nozzle of the vacuum cleaner is usually inserted into the passage opening of the base plate in order to direct the suction air flow into the bag.
  • retaining plates usually have to be suitable for different nozzle diameters, many solutions provide an elastic seal (sealing ring), which is intended to compensate for the differences in diameter of the nozzle.
  • the sealing element is usually formed by a sealing lip made of a thermoplastic elastomer, TPE, which is injection-molded onto the edge of the passage opening of the base plate.
  • the object of the invention is therefore to provide a retaining plate with a sealing element which ensures a secure seal during operation.
  • the sealing element comprises at least one extruded film made of a thermoplastic elastomer, TPE. It has been shown that such extruded films are more suitable than known sealing elements, in particular molded TPE sealing lips. The film can also be made significantly thinner than injection-molded sealing lips, because flat and elongated cavities cannot be reliably filled in the injection molding process.
  • the holding plate can be attachable to a holding device in a vacuum cleaner housing.
  • the holding plate can be arranged, in particular fixable, in a predetermined position in the vacuum cleaner housing.
  • the vacuum cleaner filter bag can be pushed over a connection piece on the vacuum cleaner side with the aid of the retaining plate.
  • “Arranged at the edge of the passage opening” means here that the sealing element projects at least partially beyond the edge of the passage opening towards the passage opening and thus at least partially overlaps the passage opening.
  • the sealing element thus forms a sealing lip for the passage opening of the base plate.
  • the sealing element can be arranged in the same plane as the base plate, in particular as the passage opening. In this case, the sealing element can therefore be arranged partially or completely along the circumference of the passage opening.
  • the sealing element can be arranged in a plane which is arranged parallel to the plane of the passage opening.
  • the sealing element can in particular be arranged on the side of the base plate which is used to connect to the bag wall of a vacuum cleaner filter bag.
  • the sealing element also has a passage opening, which can in particular be arranged concentrically to the passage opening in the base plate.
  • the area of the passage opening in the sealing element is smaller than the area of the passage opening in the base plate. This ensures that a nozzle of the vacuum cleaner comes into contact with the sealing element during operation when the latter is inserted into the passage opening of the base plate.
  • the passage opening in the sealing element can also be circular.
  • the inside diameter of the passage opening in the sealing element is smaller than the inside diameter of the passage opening in the base plate.
  • the inside diameter can be replaced by the maximum extent in the plane of the passage opening.
  • the maximum extent of the passage opening in the sealing element is in this case less than the maximum extent of the passage opening in the base plate.
  • the passage opening in the base plate and the passage opening in the sealing element can have the same or a different shape.
  • the sealing element is annular.
  • any other shape is also conceivable as long as a passage opening in the sealing element at least partially overlaps the passage opening in the base plate so that a nozzle of a vacuum cleaner can be inserted into the passage opening in the base plate and the passage opening in the sealing element.
  • the base plate can also have any shape that can correspond in particular to the corresponding holding device in the vacuum cleaner housing.
  • the base plate is generally a flat component, the thickness of the base plate in particular being significantly less than the extent of the base plate in a plane perpendicular to it (length / width).
  • the at least one extruded film can be a blown film or a cast film.
  • the at least one extruded film can have a first side and an opposite, second side, the first side having a greater roughness than the second side.
  • the first side with the greater roughness can be arranged during operation of the holding plate in such a way that it comes into contact with the nozzle of the vacuum cleaner which is inserted into the passage opening.
  • the second side with the lower roughness can point away from the surface of the connecting piece, in particular towards the dust space of a filter bag connected to the holding plate. It can thereby be achieved that the connecting piece can be inserted into the passage opening more easily.
  • a surface of the sealing element that is too smooth could in fact lead to the connection piece sticking to the sealing element, so to speak, and therefore a high static friction has to be overcome in order to insert the connection piece.
  • it is more difficult for suction material to adhere to the smoother second side because of the lower roughness, so that an undesirable filter cake does not form or does not form so strongly in the area of the passage opening.
  • the melt flow index of the thermoplastic elastomer of the at least one extruded film is less than 10 g / 10 min, in particular less than 5 g / 10 min, in particular less than 3 g / 10 min. This means that the melt flow index is significantly lower than that of plastics that are used in the injection molding process. Injection molding processes require plastics with a melt flow index of more than 40 g / 10 min.
  • the thickness of the at least one extruded film can be less than 0.35 mm, in particular less than 0.25 mm, in particular less than 0.15 mm.
  • the thickness of the film can in particular be constant.
  • Such thin structures can be injection molded cannot be produced because the flat and elongated cavities required for this could not be filled. In the injection molding process, therefore, only structures, in particular sealing elements, with a thickness of more than 0.4 mm can be produced.
  • the at least one extruded film can be connected, in particular welded, to the base plate.
  • the at least one extruded film can be connected to the base plate, in particular (ultrasound) welded, either directly or via a connecting layer, which in particular comprises a nonwoven fabric.
  • a connecting layer can be used, for example, when the plastic material of the base plate is incompatible with the plastic material of the sealing element. In the latter case, the plastic material of the base plate would essentially not mix with the plastic material of the sealing element, so that these plastics would not be directly weldable to one another.
  • the sealing element can also comprise several layers of extruded films made of a thermoplastic elastomer, TPE (in particular produced by coextrusion).
  • TPE thermoplastic elastomer
  • a multilayer sealing element can thus be provided in this way. It is also possible to combine one or more layers of extruded films made of a thermoplastic elastomer, TPE, with one or more layers of nonwoven to form a sealing element.
  • a passage opening can then be arranged in each of the layers, the passage openings being arranged coaxially and thus forming the passage opening of the sealing element.
  • the diameter of the passage openings in the individual layers can be designed to be the same or different.
  • At least two of the layers of extruded films can consist of different plastics.
  • the one or more further layers can be optimized for elasticity and thus sufficient sealing effect, for example.
  • the multiple layers of extruded films can be connected to one another, in particular welded or glued.
  • the multiple layers can in particular be connected to one another in an area in which the sealing element is not also connected to the base plate.
  • the layers of the sealing element can already be connected to one another before they are connected to the base plate, which simplifies production, since there are not several layers of the sealing element, each with a passage opening, to each other and to the base plate and its passage opening must be positioned.
  • the diameter of the passage openings in the individual layers can be made the same or different.
  • the nonwoven layer can be arranged towards the nozzle.
  • the rough surface of the nonwoven fabric then has a similar effect as the roughening of one side of the film, as described above.
  • the diameter of the passage openings can also be different. This means that even better adaptation to different nozzle diameters can be achieved. So it can be helpful if the film with the smaller diameter of the passage opening has a high elasticity and possibly a small thickness while the film with the larger diameter of the passage opening has a lower elasticity and a greater thickness, in order to thus additionally have a centering function of the connecting piece to take over the passage opening.
  • the base plate can comprise or consist of a thermoplastic plastic.
  • the thermoplastic plastic can in particular be a recycled plastic, for example recycled polyethylene terephthalate, rPET.
  • the rPET can come from beverage bottles (bottle flake chips) or metallized PET films, for example.
  • recycled polybutylene terephthalate (rPBT), recycled polylactic acid (rPLA), recycled polyglycolide and / or recycled polycaprolactone can also be used.
  • recycled polyolefins in particular recycled polypropylene (rPP), recycled polyethylene and / or recycled polystyrene (rPS); Recycled polyvinyl chloride (rPVC), recycled polyamides as well as mixtures and combinations thereof are possible.
  • the base plate can be a stamped part, deep-drawn part or an injection-molded part.
  • the base plate can have been produced by stamping, deep drawing (thermoforming) or injection molding.
  • the invention also provides a vacuum cleaner filter bag comprising a bag wall and an above-described retaining plate connected thereto.
  • the holding plate can thus have one or more of the features mentioned above.
  • the bag wall of the vacuum cleaner filter bag can comprise one or more layers of filter material, in particular one or more layers of nonwoven fabric.
  • Vacuum cleaner filter bags with such a bag wall made of several filter material layers are for example from the EP 2 011 556 or the EP 0 960 645 known.
  • a wide variety of plastics can be used as the material for the nonwoven layers, for example polypropylene and / or polyester.
  • the layer of the bag wall to be connected to the holding plate can be a nonwoven layer.
  • the bag wall of the vacuum cleaner filter bag can also comprise or consist of recycled plastic.
  • the bag wall as in EP 3 219 376 A1 be designed as described.
  • the bag wall can be connected, in particular welded, to the base plate via the sealing element. As a result, the bag wall and the sealing element can be connected together with the holding plate, in particular the base plate, which simplifies production.
  • nonwoven is used according to the definition according to ISO standard ISO9092: 1988 or CEM standard EN29092.
  • the terms nonwoven or nonwoven and nonwoven in the field of the production of nonwovens are delimited from one another as follows and are also to be understood in this way in the context of the present invention.
  • Fibers and / or filaments are used to produce a nonwoven fabric.
  • the loose or loose and still unbound fibers and / or filaments are referred to as fleece or fiber fleece (web).
  • fleece binding step By means of a so-called fleece binding step, a nonwoven fabric of this type is finally produced which has sufficient strength to be wound up, for example, into rolls. In other words, a nonwoven fabric is made self-supporting through the consolidation.
  • the bag wall can have a through opening, in particular wherein the through opening of the bag wall is arranged in alignment with the through opening of the base plate.
  • the through-opening in the base plate and the through-opening in the bag wall can form an inflow opening through which the air to be cleaned can flow into the interior of the vacuum cleaner filter bag.
  • the invention also provides a method for producing a holding plate, comprising providing a sealing element which comprises at least one extruded film made of a thermoplastic elastomer, TPE, and connecting the sealing element to a base plate, so that the sealing element is arranged at the edge of a passage opening of the base plate .
  • the holding plate produced in this way can have one or more of the features mentioned above.
  • FIG. 1 shows the schematic structure of an exemplary vacuum cleaner filter bag.
  • the filter bag comprises a bag wall 1, a holding plate 2, and an inflow opening through which the air to be filtered flows into the filter bag.
  • the inflow opening is formed here by a passage opening 3 in the base plate of the holding plate 2 and a passage opening arranged in alignment therewith in the bag wall 1.
  • the holding plate 2 is used to fix the vacuum cleaner filter bag in a corresponding holder in a housing of a vacuum cleaner.
  • the bag wall 1 comprises at least one nonwoven layer, for example made of a melt-spun fine fiber spunbond nonwoven (meltblown nonwoven) or a filament spunbond (spunbond).
  • nonwoven layer for example made of a melt-spun fine fiber spunbond nonwoven (meltblown nonwoven) or a filament spunbond (spunbond).
  • the holding plate 2 comprises a base plate made of a thermoplastic material.
  • recycled plastic material such as recycled polypropylene (rPP) or recycled polyethylene terephthalate (rPET), can be used for the base plate.
  • FIG. 2 A top view of an exemplary holding plate that can be used in connection with a filter bag as in FIG Figure 1 can be used is in Figure 2 shown.
  • the retaining plate 2 with the passage opening 3 can be seen therein.
  • the base plate of the holding plate 2 is shown schematically rectangular here, but can have any shape that can correspond in particular to the corresponding holding device in the vacuum cleaner housing.
  • a sealing element 4 arranged on the edge of the passage opening 3 is also shown.
  • the sealing element 4 is intended to prevent or limit the escape of dust from the vacuum cleaner filter bag by sealing the area between the edge of the passage opening 3 and the outside of a connection piece of the vacuum cleaner.
  • the sealing element 4 comprises a passage opening which overlaps the passage opening 3 of the base plate. Since the area of the passage opening in the sealing element 4 is smaller than the area of the passage opening 3 of the base plate, an annular sealing lip is formed which protrudes over the edge of the passage opening 3 of the base plate inwards, i.e. towards the center of the passage opening 3.
  • the sealing element 4 is welded to the base plate and comprises at least one extruded film made of a thermoplastic elastomer, TPE, connected to the base plate.
  • TPE thermoplastic elastomer
  • a film is an element whose thickness is significantly less than its extent perpendicular to it (length and width).
  • the film can have a, in particular constant, thickness of less than 0.35 mm, for example 0.13 mm.
  • the sealing element 4 consists of a thermoplastic elastomer with a low melt flow index of less than 10 g / min.
  • the melt flow index or melt flow index is defined in accordance with ISO 1133 and is measured using a capillary rheometer.
  • the melt flow index indicates the mass of the thermoplastic melt which is pressed through a predetermined nozzle in 10 minutes under a predetermined application of pressure.
  • the at least one extruded film can be a blown film or a cast film.
  • the sealing element 4 can have a greater roughness on the side with which it comes into contact with the nozzle of the vacuum cleaner during operation than on the opposite side. This can be achieved in that a surface structure is impressed on the film by calendering.
  • the sealing element 4 can also comprise several layers of extruded foils, wherein the layers can consist of a single or different plastics.
  • the layer to be connected to the base plate can in particular comprise a plastic that is compatible with the plastic material of the base plate, so that a secure welded connection can be established.
  • Figure 2 also shows an optional closing flap 5, which can be pivoted about a hinge 6.
  • the joint 6 is in particular a film hinge.
  • the closing flap 5 serves to close the passage opening 3 when the vacuum cleaner is not in operation, in particular when the filter bag is removed from the vacuum cleaner.
  • the closure flap 3 can also be formed from a recycled plastic material, for example from the same material as the base plate.
  • the closing flap 5 is pretensioned in the closed position by a spring element 7.
  • the spring element 7 can consist of a new plastic material which is injection-molded onto the closure flap 5.
  • other known spring elements for example a metallic leaf spring, can also be used.
  • a spring pocket 8 is provided, which corresponds to the EP 1 849 392 A1 can be formed.
  • the spring element 7 is arranged in front of the closure flap 5 as seen in the closing direction.
  • the top view of the Figure 2 thus takes place on the side of the retaining plate 2 that is to be connected to the bag wall 1.
  • the spring element 7 is therefore located in the dust compartment, that is to say in the interior of the filter bag, after the retaining plate 2 has been connected to the vacuum cleaner filter bag.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
EP18158393.1A 2018-02-23 2018-02-23 Halteplatte mit dichtungselement Active EP3530171B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DK18158393.1T DK3530171T3 (da) 2018-02-23 2018-02-23 Holdeplade med tætningselement
PL18158393T PL3530171T3 (pl) 2018-02-23 2018-02-23 Płytka mocująca z elementem uszczelniającym
EP18158393.1A EP3530171B1 (de) 2018-02-23 2018-02-23 Halteplatte mit dichtungselement
ES18158393T ES2876182T3 (es) 2018-02-23 2018-02-23 Placa de sujeción con elemento de junta
RU2020128181A RU2753074C1 (ru) 2018-02-23 2019-02-20 Удерживающая пластина с уплотнительным элементом
CN201980014160.2A CN111757696B (zh) 2018-02-23 2019-02-20 具有密封元件的保持板
US16/975,039 US12042117B2 (en) 2018-02-23 2019-02-20 Retainer plate with a seal element
AU2019223037A AU2019223037B2 (en) 2018-02-23 2019-02-20 Retainer plate with a seal element
PCT/EP2019/054179 WO2019162307A1 (de) 2018-02-23 2019-02-20 Halteplatte mit dichtungselement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18158393.1A EP3530171B1 (de) 2018-02-23 2018-02-23 Halteplatte mit dichtungselement

Publications (2)

Publication Number Publication Date
EP3530171A1 EP3530171A1 (de) 2019-08-28
EP3530171B1 true EP3530171B1 (de) 2021-04-07

Family

ID=61274183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18158393.1A Active EP3530171B1 (de) 2018-02-23 2018-02-23 Halteplatte mit dichtungselement

Country Status (9)

Country Link
US (1) US12042117B2 (es)
EP (1) EP3530171B1 (es)
CN (1) CN111757696B (es)
AU (1) AU2019223037B2 (es)
DK (1) DK3530171T3 (es)
ES (1) ES2876182T3 (es)
PL (1) PL3530171T3 (es)
RU (1) RU2753074C1 (es)
WO (1) WO2019162307A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3950087A1 (de) * 2020-08-06 2022-02-09 Eurofilters N.V. Staubsaugerfilterbeutel aus recyclierten kunststoffen

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US20200390304A1 (en) 2020-12-17
CN111757696B (zh) 2022-01-11
WO2019162307A1 (de) 2019-08-29
EP3530171A1 (de) 2019-08-28
DK3530171T3 (da) 2021-06-14
ES2876182T3 (es) 2021-11-12
AU2019223037B2 (en) 2021-10-14
US12042117B2 (en) 2024-07-23

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