US3503230A - Double-drum flow-through washing machine - Google Patents

Double-drum flow-through washing machine Download PDF

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Publication number
US3503230A
US3503230A US690547A US3503230DA US3503230A US 3503230 A US3503230 A US 3503230A US 690547 A US690547 A US 690547A US 3503230D A US3503230D A US 3503230DA US 3503230 A US3503230 A US 3503230A
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Prior art keywords
washing
drum
wash
zones
washing machine
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US690547A
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English (en)
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Erich Sulzmann
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Individual
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Individual
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    • 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
    • D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
    • D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow

Definitions

  • This invention provides a double-drum flow-through washing machine which comprises longitudinal guide ribs and radial washing-liquid separators inside the washing drum so that the wash can pass through the washing drum without being hindered by annular ribs.
  • These longitudinal guide ribs may be conically tapered to determine the speed of the wash as it passes through each washing zone of the washing drum.
  • the washing-liquid separators which may be made of sheet metal serve to separate the washing zones from one another so that different washing processes can be carried out adjacent to one another while the washing liquids mix with each other as little as possible and the wash can pass easily through the washing drum.
  • the invention relates to a double-drum flow-through washing machine operating on the countercurrent principle, with an end-loaded perforated washing drum rotatable in an outer drum and having longtudinal guide ribs, for Washing textiles, in which the space between the washing and outer drums is divided into liquid chambers and the washing drum for receiving the wash is divided into separate washing zones corresponding to the liquid chambers, the drum being perforated only in the vicinity of these separate washing zones and being mounted on bearing rails which are more particularly of plastics material, also act as partitions to form the liquid chambers, and are situated in the same transverse plane as the unperforated portions of the washing drum.
  • Another object of the invention is to transport the wash through the washing drum at the same speed, regardless of whether the machine is being loaded or not. All items in the wash are to spend the same time in the washing machine.
  • a further object of the invention is to wash all items in the wash as much as possible equally well.
  • the washing machine should be such that the cross section of the material being washed inside it is as uniform as possible in all washing zones, so that all items in the Wash come into contact with the washing liquid to the same extent.
  • a still further object of the invention is to transport items in nets through the washing drum as well and as uniformly as separate items.
  • the present invention provides a double-drum flow-through washing machine which comprises a washing drum presenting in the axial direction a smooth passage uninterrupted by annular ribs for the wash and having in the vicinity of its unperforated portions radial washing-liquid separators, eg, of sheet metal, which adjoin the longitudinal guide ribs on both sides and fill in the corners formed between the guide ribs and the internal surface of the washing drum.
  • a washing drum presenting in the axial direction a smooth passage uninterrupted by annular ribs for the wash and having in the vicinity of its unperforated portions radial washing-liquid separators, eg, of sheet metal, which adjoin the longitudinal guide ribs on both sides and fill in the corners formed between the guide ribs and the internal surface of the washing drum.
  • the washing drum is divided into separate Washing zones during washing.
  • the radial washing-liquid separators which fill in the corners formed by the guide ribs and the surface of the washing drum, prevent the washing fluid from flowing freely along these corners from one washing zone into the next.
  • the washing zones themselves form because the washing drum is perforated only in the areas of these zones and it is only in these areas that washing liquid can be exchanged between the washing zones and the liquid chambers between the washing and outer drums, whereas the washing drum has unperforated portions where no exchange between the washing-drum interior and the liquid chambers can take place between the washing zones.
  • the material present in the washing drum during washing prevents the Washing liquid from moving freely inside the washing drum from one washing zone to the next. Since the corners formed by the guide ribs and the washing-drum surfaces are filled in by separators, the long tubular washing drum is therefore divided into separate washing zones succeeding one another in the axial direction, without any radial bafiles being used.
  • the advantages of the washing machine embodying the invention are many: all items in the wash spend approximately the same time in the washing drum, so that the washing effect is uniform; the wash contained in the washing drum has the same cross section in all washing zones with no tangles so that the washing effect is uniformly good; items packed in nets pass through the washing drum with loose items without any trouble; and the washing drum empties automatically if not re-loaded, for example when work ceases.
  • the longitudinal guide ribs preferably taper conically from one unperforated washing-drum portion to the next in the direction in which the wash advances.
  • This conical tapering has the advantage of providing increased thrust for the articles washed, so that the latter are more readily and better conveyed through the washing drum.
  • the longitudinal portions of the guide ribs preferably taper conically to differing extents between the various unperforated washing-drum portions.
  • the wash can spend a long time in certain zones, for example the rinsing zones, in which the conical tapering of the longitudinal guide ribs is less marked than in other zones, for example washing zones, where a faster passage of the wash is desirable.
  • tapering longitudinal guide ribs may be provided in some zones and non-tapering longitudinal guide ribs in others. As a rule, the longitudinal guide ribs taper in the direction in which the wash advances.
  • FIG. 1 is a longitudinal section through a washing machine according to the invention.
  • FIG. 2 is a cross section on the line II-II of FIG. 1.
  • the double-drum flow-through washing machine has a stationary outer drum supported on a base 11.
  • An endloaded perforated washing drum 12 inside the outer drum 10 is supported on its exterior merely by bearing rails 13 which are situated between the outer and washing drums and pass around part of the washing drum.
  • These hearing rails 13 are for example of plastics material, rust-resistant metal or the like.
  • Liquid chambers 15 are for-med between the washing drum 12 and outer drum 10 and are defined in the axial direction by the bearing rails 13 acting as dividing walls. Water, detergent and bleach are supplied to the liquid chambers 15 along pipes (not shown) from the outside.
  • the interior of the washing drum 12 is provided with longitudinal guide ribs 14.
  • the washing drum 12 may incline downwards relative to the horizontal in the direction of passage of the wash. Alternatively, however, it may be horizontal.
  • the interior of the washing drum is divided into separate washing zones 16a, 16b, 16c, 16d, 16e, 16 in only which areas perforations 17 in the drum are located.
  • the bearing rails 13 are in the same transverse plane Q as the unperforated portions 18 of the washing drum 12.
  • the liquid chambers 15 correspond to the separate washing zones 16a-f.
  • the washing drum 12 presents a smooth passage for the wash 19, uninterrupted by annular ribs.
  • it also has washing-liquid separators 20, for example of sheet metal, which adjoin the longitudinal guide ribs 14 on both sides and fill in the corners formed by the ribs 14 and its internal surface.
  • the wash 19 projecting beyond the washing-liquid level 21 in the unperforated portions 18 of the washing drum substantially prevents washing liquid from passing freely out of one of the washing zones 16a-f into the next.
  • the corners formed by the ribs 14 and the surface of the washing drum 12 and not filled by the wash 19 are filled by the radial washing-liquid separators 20, so that there also the washing liquid is prevented from flowing from one of the washing zones 16a-f into another.
  • the various Washing zones 1611- can therefore be separated effectively and different washing conditions can be created in them without, as in the known washing machine, having radial bafiles in the form of annular ribs which have disadvantages in other respects.
  • the inside surfaces of the washing drum 12 are therefore axially smooth, i.e. uninterrupted, except for the filled-in corners into which the material washed does not reach.
  • the washing liquid is passed through the washing machine in the opposite direction of the wash 19.
  • the liquid flows in the space between the washing drum 12 and outer drum 10 above the bearing rails 13, which end below the washing-liquid level 21.
  • the wash passes through the' washing machine from the loading end 22 to the discharge end 23, i.e. from left to right in FIG. 1.
  • the washing liquid flows in the opposite direction.
  • the longitudinal guide ribs 14 taper conically from one unperforated portion 18 to the next in the direction of passage of the wash 19 as shown in FIG. 1, in which conical rib portions are shown with portions 14a of greater cross-section and portions 14b of smaller cross-section.
  • FIG. 1 also illustrates the varying extent of the conical tapering of the longitudinal guide ribs 14 between the unperforated drum portions 18. By way of example, it shows the guide rib portions in the first three washing zones 16a-c in the direction of wash advance as tapering equally. In the fourth washing zone 16d the tapering isless marked.
  • the guide rib portions are 'not conically arranged; and in the sixth washing zone 16 which is also a rinsing zone, they taper conically in the opposite direction, i.e. opposite the direction of wash advance.
  • This illustration is solely an example and explanation, and the conical tapering or non-tapering of the longitudinal guide rib portions could perfectly well be otherwise in the various zones.
  • the relatively strongly marked conical tapering in the first three washing zones 16a-c accelerates the passage of the wash 19 to a relatively large extent.
  • the passage of the wash 19 is less accelerated because the conical tapering of the longitudinal guide ribs 14 is less.
  • the speed of the wash is in fact reduced, because the longitudinal guide ribs 14 taper conically in the opposite direction.
  • a tubular double drum type counterflow washing machine comprising:
  • the inner washing drum includes a plurality of longitudinal guide ribs circumferentially displaced with respect to each other on the internal surface of the inner drum, said ribs forming corners with the internal surface,
  • said inner drum includes radial-liquid separators extending from at least one side of the circumferentially displaced longitudinal ribs to fill the corner between the ribs and the internal surface thereof,
  • the inner drum further includes perforated washing zones longitudinally displaced along the internal surface thereof and (g) a plurality of the radial washing-liquid separators extending from the guide ribs are located between adjacent washing zones to form both a separation therebetween and a free space along the internal surface of the inner washing drum and provide a smooth, uninterrupted passage for wash material being washed therein.
  • said plurality of radial washing-liquid separators being located at unperforated areas.
  • a washing machine as defined in claim 4 wherein said longitudinal guide ribs continuously become smaller in circumferential width from one unperforated area to the next and said ribs have a radial height which is uniform throughout each said washing zone.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
US690547A 1967-01-27 1967-12-14 Double-drum flow-through washing machine Expired - Lifetime US3503230A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0108037 1967-01-27

Publications (1)

Publication Number Publication Date
US3503230A true US3503230A (en) 1970-03-31

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ID=7528528

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US690547A Expired - Lifetime US3503230A (en) 1967-01-27 1967-12-14 Double-drum flow-through washing machine

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US (1) US3503230A (en))
JP (1) JPS4840599B1 (en))
AT (1) AT273865B (en))
BE (1) BE707553A (en))
CH (1) CH460692A (en))
DK (1) DK113567B (en))
ES (1) ES349168A1 (en))
FR (1) FR1551257A (en))
GB (1) GB1148030A (en))
NL (2) NL6716066A (en))
SE (1) SE311009B (en))

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823583A (en) * 1971-08-23 1974-07-16 Ctc Ab Tubular washing machine
US3893311A (en) * 1972-05-19 1975-07-08 Arnfried Meyer Drum-type machine for the treatment of textile material
US3995458A (en) * 1974-12-10 1976-12-07 Engelhardt & Forster Laundry machine
US4485646A (en) * 1982-02-02 1984-12-04 A. Ahlstrom Osakeyhtio Apparatus for washing fiber stock
US5025645A (en) * 1988-06-06 1991-06-25 Passat-Maschinenbau Gmbh Washing machine
US20120201094A1 (en) * 2010-03-18 2012-08-09 Aditya Birla Science & Technology Co., Ltd. Dispersion apparatus for rotating drum

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293891A (en) * 1964-04-30 1966-12-27 Sulzmann Erich Joseph Tubular double drum type counterflow washing machine for textiles, especially laundry

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293891A (en) * 1964-04-30 1966-12-27 Sulzmann Erich Joseph Tubular double drum type counterflow washing machine for textiles, especially laundry

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823583A (en) * 1971-08-23 1974-07-16 Ctc Ab Tubular washing machine
US3893311A (en) * 1972-05-19 1975-07-08 Arnfried Meyer Drum-type machine for the treatment of textile material
US3995458A (en) * 1974-12-10 1976-12-07 Engelhardt & Forster Laundry machine
US4485646A (en) * 1982-02-02 1984-12-04 A. Ahlstrom Osakeyhtio Apparatus for washing fiber stock
US5025645A (en) * 1988-06-06 1991-06-25 Passat-Maschinenbau Gmbh Washing machine
US20120201094A1 (en) * 2010-03-18 2012-08-09 Aditya Birla Science & Technology Co., Ltd. Dispersion apparatus for rotating drum

Also Published As

Publication number Publication date
NL7103165A (en)) 1971-06-25
NL6716066A (en)) 1968-07-29
BE707553A (en)) 1968-04-16
DE1610121A1 (de) 1971-04-15
GB1148030A (en) 1969-04-10
SE311009B (en)) 1969-05-27
DK113567B (da) 1969-04-08
JPS4840599B1 (en)) 1973-12-01
CH460692A (de) 1968-08-15
ES349168A1 (es) 1969-04-01
AT273865B (de) 1969-08-25
DE1610121B2 (de) 1972-08-17
FR1551257A (en)) 1968-12-27

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