EP2562304B1 - Luftstromfilter für Wäschetrockner - Google Patents

Luftstromfilter für Wäschetrockner Download PDF

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Publication number
EP2562304B1
EP2562304B1 EP11178601.8A EP11178601A EP2562304B1 EP 2562304 B1 EP2562304 B1 EP 2562304B1 EP 11178601 A EP11178601 A EP 11178601A EP 2562304 B1 EP2562304 B1 EP 2562304B1
Authority
EP
European Patent Office
Prior art keywords
air stream
plastic frame
stream filter
net sheet
filter 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
EP11178601.8A
Other languages
English (en)
French (fr)
Other versions
EP2562304A1 (de
Inventor
Marco Santarossa
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp 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
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP11178601.8A priority Critical patent/EP2562304B1/de
Publication of EP2562304A1 publication Critical patent/EP2562304A1/de
Application granted granted Critical
Publication of EP2562304B1 publication Critical patent/EP2562304B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/22—Lint collecting arrangements

Definitions

  • the present invention relates to an air stream filter for a laundry dryer. Further, the present invention relates to a laundry dryer with at least one air stream filter.
  • a hot and dry air stream passes a laundry drum containing laundry to be dried. After passing the laundry drum the humidity of the air stream increases and its temperature decreases. Further, the air stream carries an amount of fluff removed from the laundry to be dried. Thus, the air stream has to be filtered in order to remove the fluff. Moreover, the air stream has to be dehumidified by passing an evaporator of a heat pump circuit or by a heat exchanger receiving cold ambient air. Additionally, the air stream has to be heated up by a condenser of the heat pump circuit or by an electric resistance, for example. These three operations are carried out in that order before the air stream is reintroduced again into the laundry drum.
  • An air stream filter for removing fluff according to the prior art is disclosed in GB 2 091 123 , US 3 378 934 and EP 2 458 071 .
  • Said air stream filter comprises two sieves connected by a hinge. Two net patches are supported by a frame in each case. The two frames are connected by the hinge.
  • air stream filters are formed as an openable pocket having a rigid plastic frame. Said plastic frame is over-injected on a net sheet.
  • the net sheet is the air filtering part.
  • the plastic frame supports the net sheet.
  • the plastic frame is formed by two separate parts, while the net sheet is a single foil extending on the both separate parts of the plastic frame. Thus, the net sheet is permanently joining the parts of the plastic frame.
  • the filter in the pocket form may be opened in a book-like fashion in order to remove the fluff.
  • a hinge may be provided on the bottom part of the pocket in order to allow an opening of the air stream filter without separating the two parts of the plastic frame. In the prior art said hinge is simply formed by the net sheet itself connecting the two parts of the plastic frame.
  • the object of the present invention is achieved by the air stream filter according to claim 1.
  • the present invention relates to an air stream filter, in particular for an air stream channel in a laundry dryer, wherein
  • the reinforcing element is attached at the net sheet in a hinge portion between the wings of the plastic frame.
  • the hinge is formed by the net sheet between the wings of the plastic frame and additionally by the reinforcing element.
  • the plastic frame comprises a grid.
  • the grid provides an increased stability of the plastic frame and the airstream filter.
  • the reinforcing element is a plastic layer connecting the wings of the plastic frame.
  • the plastic frame may comprise at least two layers, wherein the net sheet is sandwiched between said two layers.
  • the at least two layers of the plastic frame extend over the two wings of the plastic frame.
  • a part of the net sheet is over-injected by the plastic frame.
  • the hinge portion of the net sheet may be over-injected by the reinforcing element.
  • the net sheet may preferably be in a single foil extending over the two wings of the air stream filter.
  • a hinge portion of the net sheet may be uncovered by the over-injection of the reinforcing element.
  • the hinge can act as an air filter.
  • At least a part of the hinge region of the net sheet may have a pattern which is different than that of the net extending on the wings of the air stream filter.
  • the present invention relates to a laundry dryer with at least one air stream filter, wherein the laundry dryer comprises at least one air stream filter mentioned above.
  • FIG 1 illustrates a schematic perspective view of a plastic frame 10 of an air stream filter according to a preferred embodiment of the present invention.
  • the air stream filter is preferably provided for a laundry dryer.
  • the plastic frame 10 includes two symmetric wings.
  • a hinge 12 extends along the symmetry axis between said wings, so that the plastic frame 10 can be closed and opened in a book-like fashion.
  • the air stream filter In the closed state of the plastic frame 10 the air stream filter has the form of a pocket and is insertable into the laundry dryer, in a region of an opening for loading laundry into a treating chamber.
  • the air stream filter In the open state of the plastic frame 10 the air stream filter can be cleaned by the user.
  • Each wing of the plastic frame 10 comprises a grid 22.
  • the grids 22 provide an increased stability of the plastic frame and the air stream filter.
  • a hinge portion 16 of the plastic frame 10 is shown in FIG 2 by more details.
  • FIG 2 illustrates a detailed schematic perspective view of the plastic frame 10 of the air stream filter according to a preferred embodiment of the present invention.
  • FIG 2 is a detailed representation of the hinge portion 16 in FIG 1 as viewed from the outside of the air stream filter, i.e. the hinge part resting outside the pocket formed by the filter in a closed state.
  • FIG 2 clarifies the structure of the plastic frame 10 in the hinge portion 16.
  • FIG 3 illustrates a schematic front view of the inner side of the plastic frame 10 of the air stream filter according to a preferred embodiment of the present invention.
  • a net sheet 14 covers the whole plastic frame 10.
  • the plastic frame 10 and the net sheet 14 form the air stream filter.
  • the net sheet is preferably in a single foil extending over the plastic frame 10.
  • a reinforcing element 20 formed as a plastic layer is attached on one side of the net sheet 14 in the portion of the hinge 12, as shown in Figure 6 .
  • the plastic layer rests on the outside of the hinge region 16, i.e. on the outer side of the pocket formed by the air stream filter in a closed state.
  • the net sheet 214 is embedded in the plastic frame 210 in the portion of the hinge 212, as illustrated in Figure 7 . In the latter case, the net sheet 214 is sandwiched between two layers of the plastic frame 210 in the portion of the hinge 212. Further, the net sheet 14, 214 is over-injected by the plastic frame 10, 210.
  • the plastic frame 10, 210 is formed as a single-piece part, and the net sheet 14, 214 is not the only connection between the wings of the plastic frame.
  • a part from the different arrangement of the net 214 and the plastic frame 210 in the hinge region 16, the air stream filter embodiment shown in figure 7 is identical to that described with reference to Figures 1 to 6 .
  • FIG 4 illustrates a detailed schematic front view of the plastic frame 10 of the air stream filter according to a preferred embodiment of the present invention.
  • FIG 4 shows by more details the hinge portion 16 in FIG 3 as viewed from the inside of the pocket formed by the filter in a closed state.
  • FIG 5 illustrates a more detailed schematic front view of the plastic frame 10 of the air stream filter according to a preferred embodiment of the present invention.
  • FIG 5 shows an end portion 18 of FIG 4 by more details.
  • FIG 6 illustrates a sectional side view of a hinge portion 16 of the air stream filter according to a preferred embodiment of the present invention.
  • FIG 6 shows the sectional side view along the axis A-A in FIG 5 .
  • the reinforcing element 20 is attached at one side of the net sheet 14.
  • the reinforcing element 20 extends along the hinge 12.
  • the hinge is formed by the net sheet 14 and the reinforcing element 20.
  • Figure 7 illustrates a sectional side view of a hinge portion 16 of the air stream filter according to a further embodiment of the invention.
  • the plastic frame 210 includes two layers.
  • the net sheet 214 is sandwiched between said two layers of the plastic frame 210.
  • the two layers of the plastic frame 210 may also extend over the two wings of the plastic frame.
  • the reinforcing element 20, 220 is a plastic layer connecting the wings of the plastic frame 10, 210.
  • the reinforcing element 20, 220 may be made on one or both sides of the net sheet 14, 214
  • the filtering net sheet 14, 214 over-injected on one or both sides thereof with plastic to form the pocket air stream filter, may have a strip, corresponding in position and dimensions to the hinge region 16, wherein the pattern of the net is different compared to the pattern of the net extending on the grid 22. Since in the hinge portion 16 the net 14, 214 may lose its air filtering function because the hinge region 16 may be completely over-injected with plastic, the pattern of the strip extending on the hinge region 16 may comprise lower air permeability compared to the net sheet portions extending on the grid 22 thereby enhancing the reinforcement of the hinge region 16. Alternatively said strip extending on the hinge region 16 may be air impermeable; for example the strip may be imperforate. Even the thickness of the net sheet strip to be embedded into the plastic frame in the hinge region 16 may be thicker than the rest of the net extending on the grid 22.
  • the air stream filter according to the present invention allows a very solid hinge 12.
  • the reinforcing element 20, 220 prevents that the net sheet 14, 214 breaks in the hinge portion 16.
  • FIG 8 illustrates a partial front view of a laundry dryer 24 with the air stream filter according to the present invention.
  • FIG 9 illustrates a partial perspective view of the laundry dryer 24 with the air stream filter according to present invention.
  • FIG 8 and FIG 9 show the position of the air stream filter within the laundry dryer 24.
  • the air stream filter is arranged below an opening 26 for loading a laundry drum.
  • the air stream filter can be removed and inserted via said opening 26.
  • FIG 9 clarifies that the air stream filter is formed as a pocket.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (12)

  1. Luftstromfilter, insbesondere für einen Luftstromkanal in einem Wäschetrockner (26), wobei
    - der Luftstromfilter mindestens einen Kunststoffrahmen (10, 210) einschließt,
    - der Kunststoffrahmen (10, 210) zwei im Wesentlichen symmetrische Flügel umfasst,
    - eine Netzplatte (14, 214), die zum Filtern von Flusen bereitgestellt wird, den Kunststoffrahmen (10, 210) bedeckt,
    - ein Scharnier (12, 212) sich entlang einer Symmetrieachse zwischen den Flügeln des Kunststoffrahmens (10, 210) erstreckt, so dass der Kunststoffrahmen (10, 210) wie ein Buch geöffnet und geschlossen werden kann,
    - mindestens ein Verstärkungselement (20, 220) an mindestens einer Seite der Netzplatte (14, 214) in einem Scharnierabschnitt (16) zwischen den Flügeln des Kunststoffrahmens (10, 210) befestigt ist,
    dadurch gekennzeichnet, dass
    das Scharnier (12, 212) durch die Netzplatte (14, 214) zwischen den Flügeln des Kunststoffrahmens und zusätzlich durch das Verstärkungselement gebildet wird.
  2. Luftstromfilter nach Anspruch 1,
    dadurch gekennzeichnet, dass
    der Kunststoffrahmen (10, 210) ein Gitter (22) umfasst.
  3. Luftstromfilter nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass
    das Verstärkungselement (20, 220) eine Kunststoffschicht ist, die die Flügel des Kunststoffrahmens (10, 210) verbindet.
  4. Luftstromfilter nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    der Kunststoffrahmen (210) mindestens zwei Schichten umfasst, wobei die Netzplatte (214) sandwichartig zwischen den beiden Schichten liegt.
  5. Luftstromfilter nach Anspruch 4,
    dadurch gekennzeichnet, dass
    die mindestens zwei Schichten des Kunststoffrahmens (210) sich über die mindestens zwei Flügel des Kunststoffrahmens (210) erstrecken.
  6. Luftstromfilter nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    ein Teil der Netzplatte (14, 214) durch den Kunststoffrahmen (10, 210) überspritzt ist.
  7. Luftstromfilter nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    ein Scharnierabschnitt (16) der Netzplatte (14, 214) durch das Verstärkungselement (20, 220) überspritzt ist.
  8. Luftstromfilter nach Anspruch 7,
    dadurch gekennzeichnet, dass
    mindestens ein Teil des Scharnierabschnitts (16) der Netzplatte (14, 214) nicht von dem überspritzten Verstärkungselement (20, 220) bedeckt ist.
  9. Luftstromfilter nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    die Netzplatte (14, 214) in einem Scharnierabschnitt (16) einen Streifen mit einem ersten Muster aufweist, das sich von einem zweiten Muster eines Netzplattenteils unterscheidet, das sich auf einem Gitter (22) des Kunststoffrahmens (10, 210) erstreckt.
  10. Luftstromfilter nach Anspruch 9,
    dadurch gekennzeichnet, dass
    das erste Muster eine niedrigere Luftdurchlässigkeit als das zweite Muster aufweist.
  11. Luftstromfilter nach Anspruch 9 oder 10,
    dadurch gekennzeichnet, dass
    das erste Muster luftundurchlässig ist.
  12. Wäschetrockner mit mindestens einem Luftstromfilter,
    dadurch gekennzeichnet, dass
    der Wäschetrockner mindestens einen Luftstromfilter gemäß einem der Ansprüche 1 bis 11 umfasst.
EP11178601.8A 2011-08-24 2011-08-24 Luftstromfilter für Wäschetrockner Active EP2562304B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11178601.8A EP2562304B1 (de) 2011-08-24 2011-08-24 Luftstromfilter für Wäschetrockner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11178601.8A EP2562304B1 (de) 2011-08-24 2011-08-24 Luftstromfilter für Wäschetrockner

Publications (2)

Publication Number Publication Date
EP2562304A1 EP2562304A1 (de) 2013-02-27
EP2562304B1 true EP2562304B1 (de) 2017-03-08

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Application Number Title Priority Date Filing Date
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2570547T3 (pl) * 2011-09-16 2021-08-23 Electrolux Home Products Corporation N.V. Filtr kłaczków do maszyny suszącej materiały prane

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2458071A1 (de) * 2010-11-29 2012-05-30 Indesit Company S.p.A. Filter zum Filtern von Verunreinigungen in einem Trockner sowie Trockner damit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378934A (en) * 1966-07-28 1968-04-23 Gen Electric Lint trap for clothes dryers
DE8032679U1 (de) 1980-12-09 1982-02-25 G. Bauknecht Gmbh, 7000 Stuttgart Waeschetrockner
IT8234042V0 (it) * 1982-10-08 1982-10-08 Zanussi A Spa Industrie Macchina asciugabiancheria con dispositivo di controllo del filtro per la filaccia.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2458071A1 (de) * 2010-11-29 2012-05-30 Indesit Company S.p.A. Filter zum Filtern von Verunreinigungen in einem Trockner sowie Trockner damit

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