WO2012126617A1 - Ökologisch effiziente vorrichtung zum staubsaugen - Google Patents
Ökologisch effiziente vorrichtung zum staubsaugen Download PDFInfo
- Publication number
- WO2012126617A1 WO2012126617A1 PCT/EP2012/001241 EP2012001241W WO2012126617A1 WO 2012126617 A1 WO2012126617 A1 WO 2012126617A1 EP 2012001241 W EP2012001241 W EP 2012001241W WO 2012126617 A1 WO2012126617 A1 WO 2012126617A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter bag
- vacuuming
- preferably greater
- filter
- suction
- Prior art date
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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
-
- 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
Definitions
- the invention relates to a device for vacuuming with a vacuum cleaner and a filter bag.
- EN 60312 EN 60312 always refers to the draft standard E DIN EN 60312-1: 2009-12.
- the air data referred to in the present description are determined analogously to EN 60312, Chapter 5.8.
- the measuring device as described in EN 60312, chapter 7.2.7 is used.
- the measuring chamber B described in EN 60312, Chapter 7.2.7.2 was used.
- the measuring chamber and the vacuum cleaners according to the prior art were respectively connected to the original hoses and the original pipes.
- Unfilled and partially filled filter bags In the present case, measurements are carried out on unfilled filter bags and on partially filled filter bags.
- a partially filled filter bag is understood to mean a filter bag which has been filled with 400 g of DMT8 test dust in accordance with EN 60312 (Chapter 5.9.1). Notwithstanding the standard, the aspiration of the test dust is not terminated as soon as one of the three conditions mentioned in chapter 5.9.1.3 is reached for the first time. Rather, always 400 g of test dust are sucked in 50 g portions.
- the suction power ⁇ ⁇ " 9 ⁇ " for an unfilled filter bag and ⁇ ⁇ 9 ( ⁇ ⁇ for a partially filled filter bag is understood to mean the values of the suction power according to EN 60312, that with the above measuring equipment structure, ie measuring chamber B with diaphragm 8
- the negative pressure in the measuring chamber for the unfilled filter bag (h un ) and for the partially filled filter bag (h, ei i) is first measured.
- the instruments used to measure the negative pressure have the requirements to meet to EN 60312, section 7.2.7.3.
- Air flow As already mentioned above, the air flow according to EN 60312 with the measuring chamber according to design B is determined using aperture 8. In the prior art, this air flow is often referred to as volume flow or suction air flow.
- Electric power consumption of the motor / blower unit of a vacuum cleaner The electric power P el un and P el te ii with unfilled or partially filled filter bag are measured with the measuring equipment specified for measuring electrical power consumption according to EN 60335, chapter 7.2.7.3. The electrical power consumption is also measured in [W].
- electrical power consumption of other components of the vacuum cleaner device for example, a power consumption by an electrically operated brush, in the calculation of electrical power consumption out of consideration.
- Mean power consumption of the motor / blower unit of a vacuum cleaner is an arithmetic mean of the electrical power of the motor / blower unit with unfilled and partially filled filter bag measured at aperture 8.
- Quality factor with unfilled filter bag A criterion for the ecological efficiency of a device for vacuuming with a vacuum cleaner and a filter bag is the quality factor Q s un with unfilled filter bag. This is defined as:
- the quality factor Q s un thus results as a quotient of the suction power and the absorbed electrical power. This factor is still multiplied by the filtration efficiency of the filter material to ensure that a high suction power is not achieved by a poor separation efficiency, ie a low dust particle retention.
- the quality factor Q s un thus represents a measure of the implementation of the electrical power absorbed by the motor / blower unit in the suction of the vacuum cleaner with an unfilled filter bag, taking into account the degree of separation of the material of the filter bag.
- Quality factor for partially filled filter bags As the quality factor Q s un decreases when filled with dust, the quality factor Q s , ej
- an unfilled filter bag is loaded with 400 g of DMT8 test dust and then the quality factor is determined in the same way as for the unfilled filter bag. This quality factor is therefore defined as
- This quality factor Q s tei i thus represents a measure of the implementation of the electric power absorbed by the motor / blower unit in the suction power of the vacuum cleaner in a partially filled filter bag, taking into account the degree of separation of the material of the filter bag.
- filter bags Under a flat bag in the sense of the present invention filter bags are understood, the filter bag wall of two individual layers of filter material with the same surface is formed such that the two individual layers are interconnected only at their peripheral edges (the term same area does not exclude of course that the two individual layers differ from one another in that one of the layers has an inlet opening).
- connection of the individual layers can be realized by a weld or adhesive seam along the entire circumference of the two individual layers; but it can also be formed by a single layer of filter material is folded around one of its symmetry axes and the remaining open peripheral edges of the resulting two partial layers are welded or glued (so-called tubular bag). With such a production three welding or gluing seams are therefore necessary. Two of these seams then form the filter bag edge, the third seam can also form a filter bag edge or lie on the filter bag surface.
- Flat bags in the sense of the present invention may also have so-called gussets. These gussets can be completely unfoldable. A flat bag with such gussets is shown, for example, in DE 20 2005 000 917 U1 (see FIG.
- FIG. 1 there with folded side folds and FIG. 3 with folded side folds).
- the gussets may be welded to portions of the peripheral edge.
- Such a flat bag is shown in DE 10 2008 006 769 A1 (see there in particular Fig. 1).
- Filter bags with surface folds A filter bag whose filter bag wall has surface folds is known per se from the prior art, for example from European patent application 10163463.2 (see there in particular FIGS. 10a and 10b or FIGS. 11a and 11b). If the filter bag wall comprises several surface folds, then this material is also referred to as a pleated filter material. Such pleated filter bag walls are shown in European patent application 10002964.4.
- Fig. 1 and Fig. 2 show a filter bag in cross section with a wall, each having two surface folds.
- the filter surface of the filter bag is increased, resulting in a higher dust holding capacity of the filter bag with higher separation efficiency and longer life results (each opposite a filter bag with the same outer dimensions and no surface wrinkles).
- the filter bag is shown here in cross section through the filter bag center.
- the longitudinal axes of the surface wrinkles thus run in a plane which in turn is perpendicular to the plane of the drawing, and the surface wrinkles go at their longitudinal ends in the plane parallel to the drawing plane and lying before and behind the plane of the weld seams of the filter bag.
- the surface wrinkles can develop most in their midst.
- the filter bag is shown here in a state in which the surface wrinkles are already unfolded somewhat.
- FIG. 2 shows a filter bag 2 with a filter bag wall 20, which has two surface folds 21 in the form of so-called triangular folds.
- the filter bag is shown here in cross section through the filter bag center.
- the longitudinal axes of the surface wrinkles thus run in a plane which in turn is perpendicular to the plane of the drawing, and the surface wrinkles go over at their longitudinal ends in the plane parallel to the drawing plane and lying in front of and behind the plane of the weld seams of the filter bag.
- the surface wrinkles develop the most in their midst.
- the filter bag is also shown here in a state in which the surface wrinkles are already unfolded.
- surface folds with other shapes are also possible.
- the fact that the surface folds in the embodiments according to FIG. 1 and FIG. 2 are perpendicular to a bag edge is not to be understood as a restriction.
- the surface wrinkles may also be at an angle to the edges of the bag.
- FIGS. 3a and 3b show how a fold fixation for dovetail folds can be produced.
- FIG. 3 a shows a plan view of a filter material web 31, which comprises the dovetail folds, and a nonwoven material web 32, which lies above this in FIG. 3 a, from which ultimately the nonwoven strips used for folding fixation are formed. From the nonwoven material web 32 (which may for example consist of a spunbonded fabric with 17 g / m 2 ) rectangular holes 33 of 10 x 300 mm were punched out.
- Fig. 3b shows the section along the line AA in Fig. 3a.
- the parts of the nonwoven material web which are used for folding fixation are connected to the filter material web by means of weld lines 34.
- the nonwoven stiffeners, which fix the folds, are shown somewhat exaggerated in FIG. 3b for reasons of better depictability.
- the nonwoven material web 32 lies flat on the filter material web 31.
- Diffusers in Vacuum Cleaner Filter Bags Diffusers in vacuum cleaner filter bags are known in the art. The variants used here are described in EP 2 263 507 A1.
- Filter material CS50 Laminate with downstream structure: spunbond 17 g / m 2 , netting 8 g / m 2 / meltblown 40 g / m 2 / spunbond 17 g / m 2 / PP staple fibers 50 to 60 g / m 2 / carded staple fiber nonwoven 22 g / m 2 .
- a detailed description of the PP Staple fiber layer can be found in EP 1 795 247 A1. This filter material can be obtained from the right holder.
- SMS92 laminate viewed from the downstream fro the following construction: spun-bonded nonwoven 35 g / m 2/40 g / m 2 meltblown / Spinnvlies17 g / m 2 meltblown and spunbond are laminated together with this material with hot melt.
- This filter material can be obtained from the right holder.
- Material LT75 Laminate with the following structure: Spunbond 17 g / m 2 / Staple fiber layer 75 g / m 2 / Spunbond 17 g / m 2 .
- the layers are ultrasonically laminated using the Ungricht U4026 lamination pattern. This filter material can be obtained from the right holder.
- the customer requirements for the hygiene of a device for vacuuming refer not only to the lowest possible dust emissions of the devices but also to the hygienic disposal of sucked dust.
- vacuum cleaners without filter bags and vacuum cleaners with filter bags can be distinguished.
- the air flow decreases more or less with increasing loading of the filter bag with dust.
- filter bags made of paper or paper with a meltblown inner layer were primarily used. Such paper filter bags show when checking the reduction of the maximum air flow at partially filled dust container analogous to EN 60312 an air flow drop of about 80% (or 60% when using multi-layer filter bags with tissue inner layer).
- filter bags made of nonwoven fabrics slowly began to assert themselves.
- filter bags were used with fleece layers of low dust storage capacity (SMS filter bag).
- SMS filter bag low dust storage capacity
- Such filter bags show when checking the reduction of the maximum air flow with partially filled dust container analogous to EN 60312 an airflow drop of about 30%.
- European Patent Applications 10002964.4, 10163463.2, and 10163462.2 disclose improved dust holding capability by pleating the filter material or by providing the filter bag with so called surface folds.
- the European patent application 10009351.7 shows how the Saugadoskonstanz can be improved by an optimized positioning of the bag in the vacuum cleaner. For example, such filter bags show an airflow drop of only about 5% when testing the reduction of the maximum air flow with partially filled dust container in analogy to EN 60312.
- Bagless vacuum cleaners - in particular cyclone vacuum cleaners - are distinguished by the fact that the air flow remains substantially constant when the dust collecting container is loaded with dust.
- the constant air flow of a cyclone vacuum cleaner is at first glance an advantage compared to vacuum cleaners with filter bags, which clog more or less with increasing loading of the filter bag, whereby the air flow is reduced accordingly.
- this is due to a poor efficiency, which in consequence leads to cyclone vacuum cleaners having to have a high electrical input power in order to generate a sufficient air flow.
- This high energy input is required because of the high losses that the separation principle entails, namely the loss of maintaining the high velocity of rotation of the dust-laden air in the cyclone separator.
- Table I shows the quality factors for vacuum cleaning devices available on the market today with vacuum cleaner and the filter bag provided by the manufacturer for these vacuum cleaners.
- the devices Oreck XL Paper / MB, Oreck XL Nonwoven are Upright vacuum cleaners that work on the Dirty Air principle.
- the Vortechnik VK 140 is a hand vacuum cleaner that works on the Clean Air principle.
- the other devices are vacuum cleaner with the usual today arrangement, so with the motor / fan unit upstream filter bag.
- in particular models were selected, which are promoted by the manufacturers as particularly ecological and / or high performance.
- Q s un are in the range of about 1 to 6 and Q s tei i correspondingly lower in the range of less than 1 to about 3. It is further noted that although some devices for vacuuming have a comparatively high quality factor for have unfilled filter bags, but show a comparatively low quality factor for partially filled filter bags.
- the invention provides devices for vacuuming with a vacuum cleaner and filter bags whose ecological efficiency is greatly improved in such a way that Q s un greater than 7, preferably greater than 8, more preferably greater than Is 9 and / or Q s tei i greater than 4, preferably greater than 5, more preferably greater than 6.
- the air flow determined for determining the suction power P sau9 un preferably greater than 35 may q un greater than 30 l / s, l / s and particularly preferably greater than 40 l / s to be.
- the air flow q tei i determined for determining the suction power can be greater than 26 l / s, preferably greater than 31 l / s and particularly preferably greater than 36 l / s.
- the vacuum h un measured to determine the suction power P 33 can be greater than 1.0 kPa, preferably greater than 1.3 kPa and particularly preferably greater than 1.7 kPa, and that for determining the suction power measured negative pressure h, ei i greater than 0.7 kPa, preferably greater than 1 kPa and more preferably greater than 1, 4 kPa.
- the degree of separation of the filter bag material ⁇ of the filter bag used in the device for vacuuming may be greater than 60%, preferably greater than 80%, particularly preferably greater than 99%.
- the device according to the invention for vacuuming emits only a few particles to the environment despite high ecological efficiency.
- the device for vacuuming can be designed so that the average power consumption of the device for vacuuming is less than 1200 W, preferably less than 800 W and more preferably less than 400 W.
- the filter bag of the device for vacuuming may have surface wrinkles, in particular fixed dovetail folds.
- the filter bag receiving space may include bow-shaped ribs which keep the wall of the filter bag spaced from the wall of the filter bag receiving space and provided to engage the fold valleys of the surface folds.
- the filter bag receiving space of the vacuum cleaner device may have a shape that approximately corresponds to the shape of the envelope of the filled filter bag.
- FIG. 1 shows a filter bag with surface folds
- 3a and 3b a schematic view of a filter material and a nonwoven material web in the production of filter material for filter bags with surface wrinkles in the form of fixed dovetail folds; 4a to 4c: schematic views of the filter bag receiving space for a flat bag without surface wrinkles according to a preferred embodiment of the device according to the invention for vacuuming; in section BB are shown for clarity, only the bracket, which are adjacent to the inlet and outlet opening;
- Fig. 6 is a schematic view of the filter bag receiving space for a surface-folding filter bag according to a preferred embodiment of the inventive vacuuming apparatus, which corresponds to the sectional view A-A in Fig. 5b with the filter bag inserted;
- Fig. 7 is a view of the filter bag containment space for the preferred embodiments of Figs. 4 and 5, in which the dimension for this filter bag containment space is indicated;
- Fig. 8 is a cross-sectional view of a filter bag with surface wrinkles of the device according to the invention for vacuuming, in which the dimensioning of the surface wrinkles is indicated.
- the vacuuming device comprises a filter bag receiving space, which is adapted to the shape of the filter bag, in the present embodiment, to the shape of a flat bag.
- the filter bag receiving space for a flat bag without surface wrinkles has on its insides small bow-shaped ribs, which are intended to prevent the filter material nestles flat against the housing wall and can no longer be flowed through.
- the filter bag receiving space for flat bags with Surface wrinkles are characterized by larger bow-shaped ribs which intervene between the surface folds of the filter bag to assist in unfolding the pleats. Apart from the bow-shaped ribs, the filter bag receiving space for both versions has the same dimensions.
- FIGS. 4a to 4c are schematic representations of the filter bag receiving space for a filter bag without surface wrinkles.
- the filter bag receiving space is shown in plan view. In this plan view, it has a shape of a square with a side length of 300 mm.
- FIGS. 4b and 4c sectional views are shown along the lines A-A and B-B in FIG. 4a.
- the filter bag receiving space has a maximum height of 160 mm.
- FIG. 7 also shows further heights of the filter bag receiving space shown in FIG. 4.
- the shape describing the interior walls of the filter bag containment space is reminiscent of the shape of a pillow.
- a flat bag without surface wrinkles assumes exactly a pillow shape during the suction operation. In this sense, it should also be understood that the filter bag receiving space has a shape that approximately corresponds to the shape of the envelope of the filled filter bag.
- the bow-shaped ribs are designated by the reference numeral 41.
- a device in the form of a grid 42 which prevents the filter bag from being sucked into it due to the suction flow in the outlet opening.
- FIGS. 4 and 7 are schematic representations of the filter bag containment space for a surface-bag filter bag.
- the dimensions of the filter bag containment space are the same as those for the filter bag take-up space of FIGS. 4 and 7.
- a flat bag with fixed surface folds also assumes a pillow shape during the suction operation so that the filter bag take-up space becomes a shape has, which corresponds approximately to the shape of the envelope of the filled filter bag.
- the filter bag receiving space has bow-shaped ribs 51 with different heights, as can be seen in particular in FIGS. 5b and 5c. Also in this embodiment a means in the form of a grid 52 is provided, which prevents the filter bag from being sucked into it due to the suction flow in the outlet opening.
- Fig. 6 corresponds to Fig. 5b, wherein a filter bag is inserted with fixed surface wrinkles in the form of dovetail folds.
- the bow-shaped ribs are designated by the reference numerals 61, 62, 63 and 64. These ribs intervene between the surface folds of the filter bag and thus contribute to a development of the surface wrinkles. This is shown schematically in FIG.
- the filter bag wall is kept at a distance from the wall of the filter bag receiving space so as to ensure a flow through the entire filter surface of the filter bag.
- the reference numeral 65 designates in this Fig. 6, the wall of the filter bag receiving space.
- the inserted filter bag 66 has a plurality of surface folds, which are shown schematically as partially unfolded.
- the air to be cleaned is sucked into the filter bag through the inlet opening 67 and sucked out via the outlet of the filter bag receiving space 68.
- In front of the outlet opening 68 is still a grid, which prevents the filter bag can block the outlet opening.
- FIG. 8 shows a section of such a flat bag with surface folds with an indication of the sizes of the surface folds.
- the flat bags with and without surface wrinkles, which were used for the experiments for Table II had the dimensions 290 x 290 mm.
- the diffuser of LT75 can be seen with reference numeral 81.
- a Domel KA 467.3.601 -4 was used as a motor / blower unit in the device according to the invention.
- the suction port of the motor / blower unit was directly connected to the exhaust port of the filter bag receiving space.
- the air flow required for the experiment (as negative pressure in the measuring box) was set with the filter bag empty. This line voltage was maintained for the respective series of experiments in which 400 g DMT 8 dust was sucked in 50 g portions. The resulting electrical power was measured. No exhaust filter was used.
- Table II shows the results of the measurements for various devices of the invention with the filter bag containment space and the motor / blower unit previously described. Both filter bags with surface folds and flat bags without surface folds were used here. As the material for the filter bags used with / without surface wrinkles, the laminates CS50, SMS92 and LT75 produced by the patentee were used as indicated in Table II.
- Table II also shows that the device according to the invention is superior to the prior art in that with comparatively low power consumption a high air flow can be obtained.
- the electrical input power of 904 W is converted into an air flow of 37.2 l / s, whereas according to the invention, to achieve an air flow of 37.9 l / s, only an electrical input power of 492 W is required ,
- Filter bags made from the SMS material can also be used according to the invention, in particular at high air flows. However, it is immediately apparent from Table II that the CS50 filter material is far superior to the SMS92 material in terms of environmental efficiency.
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- Filters For Electric Vacuum Cleaners (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013024113A BR112013024113A2 (pt) | 2011-03-22 | 2012-03-21 | aparelho aspirador de pó |
JP2014500281A JP2014512901A (ja) | 2011-03-22 | 2012-03-21 | 環境効率の良い真空掃除装置 |
US14/006,611 US9713409B2 (en) | 2011-03-22 | 2012-03-21 | Ecologically efficient vacuuming device |
CN201280024960.0A CN103547201B (zh) | 2011-03-22 | 2012-03-21 | 生态高效的真空清洁设备 |
AU2012230641A AU2012230641C1 (en) | 2011-03-22 | 2012-03-21 | Ecologically efficient vacuuming device |
RU2013141963/12A RU2013141963A (ru) | 2011-03-22 | 2012-03-21 | Экологически эффективное устройство для всасывания пыли |
NZ615443A NZ615443B2 (en) | 2011-03-22 | 2012-03-21 | Ecologically efficient vacuuming device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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EP11002361.1 | 2011-03-22 | ||
EP11002361 | 2011-03-22 | ||
EP11007089.3A EP2502537B1 (de) | 2011-03-22 | 2011-08-31 | Ökologisch effiziente Vorrichtung zum Staubsaugen |
EP11007089.3 | 2011-08-31 |
Publications (1)
Publication Number | Publication Date |
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WO2012126617A1 true WO2012126617A1 (de) | 2012-09-27 |
Family
ID=44217529
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2012/001240 WO2012126616A1 (de) | 2011-03-22 | 2012-03-21 | Ökologisch effiziente vorrichtung zum staubsaugen |
PCT/EP2012/001241 WO2012126617A1 (de) | 2011-03-22 | 2012-03-21 | Ökologisch effiziente vorrichtung zum staubsaugen |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2012/001240 WO2012126616A1 (de) | 2011-03-22 | 2012-03-21 | Ökologisch effiziente vorrichtung zum staubsaugen |
Country Status (11)
Country | Link |
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US (2) | US9877627B2 (de) |
EP (2) | EP2502537B1 (de) |
JP (2) | JP2014512901A (de) |
CN (2) | CN103648347B (de) |
AU (2) | AU2012230641C1 (de) |
BR (2) | BR112013024203A2 (de) |
DK (2) | DK2502536T3 (de) |
ES (2) | ES2713074T3 (de) |
PL (2) | PL2502537T3 (de) |
RU (2) | RU2013141963A (de) |
WO (2) | WO2012126616A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DK2502536T3 (en) | 2011-03-22 | 2019-04-01 | Eurofilters Nv | Ecologically efficient device for vacuuming |
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