EP2117408A1 - Filtre pour des machines à laver - Google Patents

Filtre pour des machines à laver

Info

Publication number
EP2117408A1
EP2117408A1 EP08707696A EP08707696A EP2117408A1 EP 2117408 A1 EP2117408 A1 EP 2117408A1 EP 08707696 A EP08707696 A EP 08707696A EP 08707696 A EP08707696 A EP 08707696A EP 2117408 A1 EP2117408 A1 EP 2117408A1
Authority
EP
European Patent Office
Prior art keywords
filter insert
longitudinal ribs
filter
flumes
side surfaces
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.)
Granted
Application number
EP08707696A
Other languages
German (de)
English (en)
Other versions
EP2117408B1 (fr
Inventor
Denis Lehmann
Bruno Gaus
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.)
Meiko Maschinenbau GmbH and Co KG
Original Assignee
Meiko Maschinenbau GmbH and Co KG
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 Meiko Maschinenbau GmbH and Co KG filed Critical Meiko Maschinenbau GmbH and Co KG
Publication of EP2117408A1 publication Critical patent/EP2117408A1/fr
Application granted granted Critical
Publication of EP2117408B1 publication Critical patent/EP2117408B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4204—Flat filters
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/247—Details specific to conveyor-type machines, e.g. curtains
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning

Definitions

  • the rinse water tanks of the rinse zone are filled with fresh water and heated. Furthermore, detergent is added to the stored rinse water.
  • a plurality of dishwashing zones can be arranged one behind the other whose dishwashing water has, for example, different temperatures with different cleaning agents and / or with different cleaning agent concentrations.
  • a rinse zone is generally designed as a chamber and typically has an inlet opening and an outlet opening. Through these openings, the items to be washed are transported through the respective rinsing zone by means of the conveyor.
  • a rinsing zone has a rinsing water tank and a circulating pump, which sucks rinsing water from the rinsing water tank and sprayed onto the material to be cleaned via a spray system associated with the rinsing zone.
  • a spray system associated with the rinsing zone.
  • the dirt adhering to the items to be washed is removed.
  • the rinse water flows back together with the rinsed dirt back into the rinse water tank.
  • the rinsed dirt is filtered out of the rinse water through a sieve system.
  • screen plates with hole diameters of 2 mm to 4 mm are used, which cover the entire rinsing water tank. Dirt particles which are smaller than this hole diameter are recycled together with the rinsing water.
  • detergent and dirt residues which are loosely disposed on the items to be washed, are rinsed off by means of fresh water in one or more rinsing zones.
  • the fresh water can be cold or heated hot fresh water. Heated fresh water may additionally be accompanied by a rinse aid.
  • the fresh water or rinse water is then usually wholly or partially fed to a rinse water tank a rinsing zone to dilute the there located in Spülwasserertank debris. After passing through Run the one or more rinse zones passes through the material to be cleaned optionally one or more drying zones, in which or which the items to be washed is dried.
  • the above-mentioned screen plates in the at least one rinsing zone often have the disadvantage that the dirt filtered out of the rinsing water remains on them and is not actively removed from the rinsing zone. By dropping the rinse water of this dirt can be further crushed and then passes with a time delay also in the rinse water of the rinse zone, where it increases the dirt content of the rinse water. This is particularly disadvantageous because the respective cleaning performance of a rinsing zone typically decreases with the amount of dirt in the circulated rinsing water.
  • the dirt content of the rinsing water of the rinsing zone can be counteracted by an increase in the proportion of rinse water supplied to the rinsing zone from the final rinse zone.
  • the disadvantage is that with this method, the consumption of detergent, which must be added to the rinse water, and the required heating power in the same ratio increase. This increases operating costs and environmental impact.
  • the rinsing water is also circulated within the program steps "Rinsing." A portion of the rinsing water flows through the fine sieve after passing through the coarse sieve, which also retains the fine dirt components of the rinsing water. and coarse dirt from the fine sieve into the wastewater.
  • Such a device is described in DE 24 51 822 C2.
  • the device described in this document discloses a collecting pot for a dishwasher with a first suction chamber connected to a drain pump and a second suction chamber connected to a circulation pump.
  • the first and second suction chambers are connected to each other by a fine filter screen.
  • rinsing liquid is sucked out of the dishwasher, wherein rinsing liquid is withdrawn from both suction chambers through the rinsing pump.
  • the devices known from the prior art typically function in that the purge operation is interrupted for a cleaning of the fine sieve.
  • a separate program step of a Feinsiebgraphy is executed with switched off rinse water pump.
  • the fine sieve is constantly flowed through by a rinsing liquid in a filter direction, so that the fine sieve is not immediately accessible for cleaning (for example, spraying from the outside).
  • This interruption of the rinsing operation for cleaning the screens used thus means an additional amount of time during which the respective rinsing chamber can not be used.
  • a rinse-water circulation pump operates permanently, with larger amounts of rinse water being circulated per minute, and thus constantly feeding larger amounts of rinse water to the fine filter.
  • a cleaning of the sieves used, for example by spraying, especially in a separate cleaning step, is technically difficult to realize in such an operation and would, especially in commercial applications, lead to an expensive, because many interruptions having purge operation.
  • the present invention has for its object to provide a filter device which avoids the disadvantages of the above solutions from the prior art.
  • a filter insert which is preferably arranged below a coarse sieve or the like in the rinse tank of a rinsing zone of a continuous dishwasher and is provided with a number of longitudinal ribs provided at a regular pitch.
  • the longitudinal ribs extend in a direction in which the bottom of the filter cartridge, which has flumes lying between the longitudinal ribs, is inclined.
  • the filter insert which is preferably box-shaped and can be easily hooked into the rinsing tank of a continuous dishwasher, has a gradient which is suitable for making a swirling of particles collected there into a separate filter box.
  • the filter insert preferably has longitudinal ribs arranged in a regular graduation and extending in the longitudinal direction corresponding to the formed flow gradient. These longitudinal ribs have a substantially triangular appearance and extend with their side surfaces from a crest at a cone angle of up to 35 ° to their corresponding footprint on the top of the flumes. Due to the division in which the longitudinal ribs are arranged in the filter insert, there is a corresponding number of flumes.
  • the flumes are preferably formed in the closed bottom with a lateral edge, so that there is a sufficient, permitting a leaching particles permeable film of rinse water flows to each formed in a flume drain opening or a common opening, below a filter box for receiving the washed-off Particles is orders.
  • the filter box below the filter insert can be designed box-shaped, for example, in production technology simple manner and have a separate delivery unit.
  • an opening pattern is formed in the side surfaces of the individual longitudinal ribs.
  • This opening pattern is preferably selected such that larger dirt particles do not pass through it, but impinge laterally from the side surfaces arranged in the cone angle with respect to one another on the flumes from which they are transported away in the direction of the discharge openings by the flotation water film forming there.
  • the opening pattern in the longitudinal ribs bounding side surfaces is made in a size of 1 to 3 mm, which allows the passage of rinsing liquid in the underneath arranged tank of the rinsing zone, but prevents larger particles from entering the lying below the filter cartridge tank.
  • the filter insert is designed as a suspendable box module, in which the longitudinal ribs extend with a gradient in the direction of the one formed in the bottom of the filter insert, each flume assigned to a common sesöff- / en.
  • the slope can be adjusted by the ground, d. H. the Schwemmrinnen having a solid unperforated surface, in the area of the drain opening / s deeper lying in the box insert is / are as the drain opening / s opposite side of the box-shaped filter insert.
  • the filter insert is formed below the triangular-shaped longitudinal ribs with a free space, d. H. through the opening pattern, which are formed in the side surfaces of the longitudinal ribs, an unhindered passage of rinse water into the rinsing tank arranged underneath the respective rinsing zone of the continuous dishwasher is possible.
  • the particles passing through the individual flumes and the drainage openings into the collecting trough pass into an active filter, which is formed by the filter box with the associated aggregate and which can be cleaned from time to time in accordance with the degree of soiling.
  • FIG. 2 shows a perspective view of the filter insert proposed according to the invention
  • FIGS. 3 and 4 embodiments of the drain opening
  • FIG. 6 shows a plan view of the filter insert proposed according to the invention
  • FIG. 7 is a sectional view of the filter insert according to the invention shown in FIG. 6 in plan view according to the section V-V in FIG. 6, FIG.
  • FIG. 8 shows a sectional view of the filter insert according to the invention shown in FIG. 6 in plan view according to the sectional profile W-W in FIG. 6.
  • continuous washing machines In these cutlery, dishes, trays and serving for preparing food containers and the like are cleaned in no time.
  • These continuous washing machines usually comprise an endless conveyor belt, on which the material to be cleaned is either applied directly and passes through all treatment zones of the continuous dishwasher or housed in baskets, which are applied to the transport medium formed in particular as an endless conveyor slide or conveyor rails, wherein the baskets in Be promoted conveying direction through the treatment zones and thereby the cleaning material contained in these is cleaned.
  • Continuous dishwashers usually include optionally a Vorab syndrome, at least one washing or rinsing zone, a final rinse or pump clearing and a drying zone.
  • FIG. 1 shows a sectional view through a rinsing tank of a rinsing zone of a continuous-flow dishwasher.
  • FIG. 1 shows that a continuous-flow dishwasher 10, which is only partially shown in FIG. 1, comprises a rinsing tank 12, which is delimited by a tank bottom 14 at the bottom.
  • a circulating pump 16 is received in an embossment 22.
  • the circulating pump 16 comprises the tank bottom side a filter ring 18, are kept away from the circulating pump 16 with the coarse contaminants.
  • the circulation pump 16 comprises a laterally outgoing discharge nozzle 20, via which a not shown in Figure 1 in detail cleaning system is applied within a rinsing zone of the continuous dishwasher 10 with circulated rinse water, which is applied by the cleaning systems, not shown on the material to be cleaned ,
  • the circulation pump 16 is received in the embossment 22 in the tank bottom 14 of the washing tank 12.
  • a filter box 24 Above the tank bottom 14 is a filter box 24.
  • the filter box 24 is associated with a delivery unit 26.
  • the filter box 24 is connected via two openings 30, 31 with the delivery unit 26 in connection.
  • 24 accumulating rinse water is fed to a circulation in the filter box and on the other hand, the filtered dirt cyclically conveyed out.
  • the filter box 24 is formed substantially box-shaped and is bounded by a wall 32 on the side and at the bottom.
  • the filter box 24 in turn constitutes a support surface 34 for a filter cartridge 36.
  • the filter cartridge 36 may be in box form, as will be described below, designed as a one-piece or multi-piece welded sheet metal, as a plastic construction or combinations of sheet metal and plastic which is placed or mounted in the rinsing tank 12 of the continuous dishwasher 10.
  • the filter insert 36 which is shown only partially in FIG. 1, comprises a number of longitudinal ribs 38.
  • the filter insert 36 here designed in the form of a box construction, comprises a peripheral bearing surface 34 on which a coarse screen 28 is placed.
  • the longitudinal ribs 38 of the filter insert 36 shown only partially in FIG. 1 comprise side surfaces 46.
  • the longitudinal ribs 38 have a substantially triangular cross-section and are delimited by two side surfaces 46 which are connected to one another along a ridge 44 running parallel to the longitudinal ribs 38.
  • the side surfaces 46 of each longitudinal rib 38 are provided with an opening pattern 42 throughout, with each of the comb 44 and the surface portion 53 a few mm unperforated sheet, compare positions 53 and 54, remain standing (see illustration according to Figure 5).
  • an opening pattern 42 is formed in the side surfaces 46 of the longitudinal ribs 38 in the filter cartridge 36, instead of longitudinal slots or other geometry of openings in the side surfaces 46 of the longitudinal ribs 38 may be formed. It is crucial that due to the small diameter or the small length or width dimensions of the opening pattern 42 in the side surfaces 46 no coarse particles can pass through the filter cartridge 36 into the rinse tank 12 of the continuous dishwasher 10.
  • the sectional view of Figure 1 is also removed that run between the individual longitudinal ribs 38 Schwemmrinnen 48.
  • the flumes 48 are formed by a closed surface portion 52 extending between each two spaced apart longitudinal ribs 38 of the filter cartridge 36 and the unperforated portions 53 in the longitudinal ribs 38.
  • the flumes 48 take from the side surfaces 46 by the dripping rinse water rinsed particles and Due to their gradient in the direction of drain opening / s 50, they are able to wash off these particles in the flow direction 56 in the direction of the drainage opening 50. Under the / each drain opening / s 50 extends - as shown in Figure 1 - the filter box 24th
  • the filter cartridge 36 partially reproduced in the sectional view in FIG. 1 comprises a number of longitudinal ribs 38 which are connected to each other with the closed surface portions 52 which form the flumes 48 for flushing off the retained particles.
  • FIG. 2 a perspective top view of a filter insert formed in a box shape can be seen.
  • FIG. 2 shows that the filter insert 36 has a multiplicity of spaced-apart longitudinal ribs 38.
  • Each of the longitudinal ribs 38 is bounded by two side surfaces 46, which are connected to one another cohesively along the comb 44.
  • opening pattern 42 is formed, which is along the entire extent or in partial areas of the side surfaces 46 of the longitudinal ribs 38 in this and above and below unperforated sections 53, 54, such as shown in Figure 5, has.
  • the individual longitudinal ribs 38 arranged substantially parallel to one another are arranged in a graduation 72.
  • closed surface sections 52 result, which form the flumes 48 with the sections 53 in the longitudinal ribs 38.
  • the liquid portion passes through the opening pattern 42 which interconnected over the length of the longitudinal ribs 38 in the two at the comb 44 Side surfaces 46 is formed.
  • the rinse water can drain into the lying below the filter cartridge 36 rinsing tank 12, while the particles contained in the rinse water from the ridges 44 of the longitudinal ribs 38 and due to the inclination of the Side surfaces 46 of these slip off and get into the flumes 48. Due to the proportion of the rinse water, which does not pass through the openings of the opening pattern 42 in the side surfaces 46, but enters the flumes 48, this creates a flow in the flow direction 56 a.
  • the particles Due to the liquid film forming on the closed surface sections 52 of the flumes 48, the particles are directed through the slope 64 of the filter element 56 in the direction of the drain opening (s) 50 at the end of the flumes 58 through the same drain opening (s) 50 under the filter insert 36 arranged filter box 24 transported.
  • the individual longitudinal ribs 38 of the filter insert 36 arranged parallel to one another are connected to the closed surface sections 52.
  • the opening pattern 42 is shown only in a partial region of the side surfaces 36 of the longitudinal ribs 38. If the filter insert 36, as described below and partially shown in Figure 1, made as a box insert 66, is located within this box construction, the side of the flumes 48, on which the drain opening / s 50 is / are formed, at a lower level in Compared to the closed surface portion 52 of the flumes 48 of the filter cartridge 36, so that adjusts a flow of rinsing water and a related promotion of the pollution components in the flumes 48 in the direction of the drain holes 50.
  • the filter insert 36 is made as a box insert 66 and is formed substantially rectangular.
  • the filter cartridge 36 as a box insert 66 comprises two longitudinal and two transverse sides.
  • the individual longitudinal ribs 38 parallel to each other and form 72 individual Schwemmrinnen 48 due to the arrangement in the division.
  • FIG. 2 shows that the flumes 48 represent closed surface sections and, due to the different installation depths 60 and 62 in the region of the drain opening or s 50 or at the end opposite the drain opening 50, have an inclination in the direction of the drain opening 50.
  • an opening pattern 42 is formed in the side surfaces 46 of the individual longitudinal ribs 38.
  • Figure 6 shows a plan view of the formed in box shape filter insert according to the invention.
  • the illustration according to FIG. 6 shows that the filter insert 36 contains an encircling edge surface, designated by reference numeral 34, which serves as a bearing surface for a coarse screen 28 to be placed in the filter insert 36.
  • reference numeral 34 serves as a bearing surface for a coarse screen 28 to be placed in the filter insert 36.
  • longitudinal ribs 38 arranged in the graduation 72 extend parallel to one another.
  • the longitudinal ribs 38 each have side surfaces 46, which are connected to one another at their upper end along a ridge 44 with a material fit.
  • Each of the side surfaces 46 of the longitudinal ribs 38 comprises the opening pattern 42, which is merely indicated for illustrative reasons in the illustration according to FIGS. 1 and 5 on each of the longitudinal ribs 38.
  • FIG. 6 shows that the individual flumes 48 are each formed by a respective side surface 46 of two longitudinal ribs 38 arranged adjacent to one another.
  • a width of the closed channels 52 forming the flumes 48 is established (see FIG. 8).
  • FIG. 6 also shows that the drain opening / s 50 according to FIGS. 2, 3 and 4 is substantially rectangular and at the end of the flow channels 48 formed by the closed surface sections 52 in the bottom of the filter insert 36 in box form 66 is executed / are.
  • FIG. 7 shows a section through the filter insert according to FIG. 6 along the section V-V.
  • the filter insert 36 embodied in box shape 66, has a contact surface 54, which is essentially formed by the underside of the closed surface sections 52. From Figure 7 also shows that the second installation depth 62 of the flumes 48 in the region of the drain opening / s 50 is greater than the first installation depth 60 at the / the drain opening / s 50 opposite end of the flumes 48 in the filter insert 36. This arises the gradient 64. Also in the sectional view according to FIG. 7, the opening pattern 42 in the side surfaces 46 of the longitudinal ribs 38 is indicated. Along the ridge 44, which forms the top of each of the longitudinal ribs 38, two side surfaces 46 are connected to each other with opening pattern 42.
  • the perspective top view according to the representation in FIG. 2 shows that the filter insert 36 in box shape 66 comprises the support surface 34 for the larger openings and coarse impurities retaining coarse filter 28.
  • 2 shows the first installation depth 60 and the second installation depth 62, by means of which the gradient is formed on the closed surface sections 52 forming the flumes 48. Due to the gradient of each of the flumes 48 is a transport of impurities in the flow direction 56 in the direction of the discharge openings 50 at the end of the flumes 48 a.
  • FIG. 8 shows a section through the filter insert proposed according to the invention.
  • FIG. 8 shows that, in accordance with the pitch 72 of the filter insert 36, a resulting width 70 of the flumes 48 is established with respect to the arrangement of the longitudinal ribs 38.
  • Each of the flumes 48 is formed by the unperforated portions 53 of one of the side surfaces 46 of two adjacently disposed longitudinal ribs 38 and the closed surface portion 52.
  • Each of the longitudinal ribs 38 has a free space 68 through which the rinse water passing through the openings of the opening pattern 42 in each of the side surfaces 46 drips toward the rinse tank 12 of the continuous-type dishwasher 10. From the illustration according to FIG.
  • the two side surfaces 46 which each form a longitudinal rib 38, enclose an angle 74 on the comb 44, which is preferably between 15 ° and 35 °. It is thereby achieved that the two side surfaces 46 of each of the longitudinal ribs 38 are very steep with respect to the flumes 48. As a result, and by the surfaces 54 which are closed in the region of the combs, the rinsing water dripping steadily from the top side on the side surfaces 46 can rinse off particles which adhere to the respective flumes 48.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

L'invention concerne un élément filtrant (36, 66) pour des machines à laver, notamment des lave-vaisselle à avancement automatique, dans lesquels les articles à laver traversent au moins une zone de traitement. Un réservoir de rinçage (12) est associé à la zone de traitement au moins unique. L'élément filtrant (36) présente un certain nombre de nervures longitudinales (38) qui s'étendent parallèlement entre elles et qui délimitent des conduits d'évacuation (48).
EP08707696A 2007-02-13 2008-02-13 Filtre pour des machines à laver Active EP2117408B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007007134A DE102007007134A1 (de) 2007-02-13 2007-02-13 Filter für Reinigungsmaschinen
PCT/EP2008/001084 WO2008098746A1 (fr) 2007-02-13 2008-02-13 Filtre pour des machines à laver

Publications (2)

Publication Number Publication Date
EP2117408A1 true EP2117408A1 (fr) 2009-11-18
EP2117408B1 EP2117408B1 (fr) 2012-01-04

Family

ID=39427612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08707696A Active EP2117408B1 (fr) 2007-02-13 2008-02-13 Filtre pour des machines à laver

Country Status (6)

Country Link
US (1) US8746461B2 (fr)
EP (1) EP2117408B1 (fr)
CN (1) CN101610706B (fr)
AT (1) ATE539669T1 (fr)
DE (1) DE102007007134A1 (fr)
WO (1) WO2008098746A1 (fr)

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CN106061348A (zh) * 2013-12-31 2016-10-26 三星电子株式会社 洗碗机以及控制该洗碗机的方法

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CN102527136A (zh) * 2011-12-26 2012-07-04 铜陵市业强环保设备有限责任公司 一种新型链板式真空陶瓷过滤机的滤盒
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DE102014114719A1 (de) * 2014-10-10 2016-04-14 Winterhalter Gastronom Gmbh Transportgeschirrspülmaschine
CN106923772B (zh) * 2017-03-16 2019-03-19 湖南尔瞻智能科技有限公司 餐具分类清洗装置的清洗液净化装置
CN106890498B (zh) * 2017-03-16 2019-04-26 湖南尔瞻智能科技有限公司 餐具分类清洗机的清洗液过滤装置
CN106621536B (zh) * 2017-03-16 2019-01-29 湖南尔瞻智能科技有限公司 餐具清洗液净化装置
CN106821262B (zh) * 2017-03-16 2019-04-26 湖南尔瞻智能科技有限公司 餐具清洗液食物残渣过滤装置
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CN106061348B (zh) * 2013-12-31 2019-08-20 三星电子株式会社 洗碗机以及控制该洗碗机的方法

Also Published As

Publication number Publication date
CN101610706B (zh) 2014-04-23
US20080210621A1 (en) 2008-09-04
DE102007007134A1 (de) 2008-08-14
CN101610706A (zh) 2009-12-23
WO2008098746A1 (fr) 2008-08-21
EP2117408B1 (fr) 2012-01-04
ATE539669T1 (de) 2012-01-15
US8746461B2 (en) 2014-06-10

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