WO2020022918A1 - Filtre à eau, en particulier pour lave-vaisselle - Google Patents

Filtre à eau, en particulier pour lave-vaisselle Download PDF

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Publication number
WO2020022918A1
WO2020022918A1 PCT/PL2019/000055 PL2019000055W WO2020022918A1 WO 2020022918 A1 WO2020022918 A1 WO 2020022918A1 PL 2019000055 W PL2019000055 W PL 2019000055W WO 2020022918 A1 WO2020022918 A1 WO 2020022918A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
sealing ring
coarse
particle filter
perforated
Prior art date
Application number
PCT/PL2019/000055
Other languages
English (en)
Inventor
Agata ZAKRZEWSKA
Bartłomiej Jankowski
Original Assignee
Amica S.A.
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 Amica S.A. filed Critical Amica S.A.
Publication of WO2020022918A1 publication Critical patent/WO2020022918A1/fr

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
    • A47L15/4206—Tubular 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
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning

Definitions

  • the present invention is a water filter, for dishwashers in particular, with a system to stop large particles.
  • the invention can be used in household and professional dishwashers.
  • Standard filter module used in dishwashers consists of three separate filters assembled as one unit.
  • the uppermost module is a horizontal master filter. Most commonly it is a mesh in the form of a plate, made of stainless steel. Less commonly used is a plate, also made of plastic as an injection or mixed component. The purpose of this filter is to filter the water, which is sucked by the washing pump.
  • an external fine-particle filter Directly under the master filter, there is an external fine-particle filter. It is usually a mesh made of plastic fibre placed in the securing frame. This filter cleans the water for the washing pump and connects the washing circuit with the drain system for dirty water.
  • a coarse-particle filter for the drain pump usually in the form of a cylindrical basket, located in the central point of the bowl, over the inlet of the drain pump. This filter protects the pump against ingress of solids that could block the pump.
  • a filter used in dishwashers made by Candy wherein the master filter is a mesh made of stainless steel, while the fine- particle filter is a mesh made of metal, placed in a securing frame. At the bottom of the filter there is a plastic ring that adheres the filter to the internal surface of the bowl.
  • the bottom of the coarse-particle filter of the drain pump is a sieve with a mesh size of approx. 1.7 mm.
  • Such filter with a sieve located centrally over the inlet of the drain pump protects it against ingress of solids that could block the operation of the drain pump. However, it does not protect the washing pump against the ingress of particles to the water circulation. Drain pump water circulation: Standard solutions do not sufficiently protect the drain pump against ingress of large particles, such as food remains, into the pump, which causes clogging of the drain pump.
  • Washing pump water circulation Currently, the solutions used sufficiently protect the washing pump until the filter is removed for cleaning and reinstalled. While removing residues, such as pits or seeds, they get detached from the surface of the filter and remain in the dishwasher bowl with residual water. When installing the filter after cleaning, some particles remain in the washing pump and after the first use, they are collected together with water to the washing pump. This can cause damage to the washing pump or clogging the nozzles of spray heads.
  • the present invention is a water filter comprising a master filter, a fine-particle filter, coarse-particle filter for the drain pump and the bowl, characterized in that between the fine-particle filter the coarse-particle filter of the drain pump, there is a sealing ring, and the coarse-particle filter of the drain pump comprises perforated sealing and filtering bottom in the form of a sieve, wherein the sealing ring and the perforated sealing and filtering bottom are at the same height of the filter.
  • sealing ring is bound by its inner edge to the external surface of the vertical coarse-particle filter of the drain pump.
  • sealing ring is bound by its outer circumference to the inner surface of the fine-particle filter mesh.
  • sealing ring and the perforated sealing and filtering bottom constitute a one-piece filtering attachment to the bottom of coarse-particle filter, wherein in the area inside this filter, it is a perforated sieve, and in the part located outside the circumference of this filter, it is a ring. It is advantageous, when the perforated bottom of the coarse-particle filter is a mesh made of plastic or metal.
  • the perforated bottom is a mesh
  • the clearance of the mesh is 0.3 mm to 5 mm.
  • sealing ring is made of a plastic material or rubber.
  • sealing ring is made of hard plastic or metal, wherein its dimension allows keeping the installation slot.
  • the present invention improves the fit of the two filters, i.e. fine and coarse-particle filter relative to one another, which improves sealing and facilitates installation and removal of the two filters.
  • the sealing ring closes the free space between the coarse and fine-particle filters, which prevents ingress of the particles into the water filter bowl in the dishwasher. It also improves sealing between these filters, so that these particles, after removing the filters during normal dishwasher operation by the user, are removed with the filters.
  • the absence of large particles in the drain water effectively prevents both pumps against damage and clogging, and in addition protects the spray heads against clogging and reduced washing performance over the service life of the dishwasher.
  • fig. 1 shows a water filter unit in a vertical section
  • fig. 2 shows a cross-section of the two elements of the invention, i.e. the coarse- particle filter of the drain pump and a fine-particle filter
  • fig. 3 shows a coarse-particle filter of the drain pump with an installed sealing ring and the visible perforated bottom
  • fig. 4 shows the fine-particle filter view with the sealing ring from the inside
  • fig. 5 in turn, is a view from below of the fine- particle filter and the coarse-particle filter with a perforated bottom and the ring
  • fig. 6 shows a perforated sealing and filtering bottom and the ring
  • fig. 7 is a one-piece attachment installed on the coarse-particle filter, with a visible fine-particle filter, in a view from below
  • fig. 8 shows the attachment itself.
  • Embodiment 1 The water filter unit in a household dishwasher, comprising a horizontal master filter 100, vertical fine-particle filter 200, vertical coarse- particle filter 300 of the drain pump, and bowl 700. Between the fine-particle filter 200 and the coarse-particle filter 300, there is a sealing ring 400 made of rubber. It is bound by its inner edge 410 to the outer surface of the coarse- particle filter 310. Coarse-particle filter 300 if the drain pump has a perforated sealing and filtering bottom 500, which is a plastic mesh with a clearance of rectangular mesh of 1.0 mm, and the visible in fig. 6. Sealing ring 400 is bound to the coarse-particle filter 300 at the same height as the perforated bottom 500, as shown in fig. 1 ,2, and 3
  • Embodiment 2 Dishwasher water filter as in Embodiment 1 , wherein the sealing ring 400 is bound by its outer edge 420 to the inner surface 211 of the mesh 210 of the fine-particle filter 200. This option is shown in fig. 4.
  • Embodiment 3 Water filter as in Embodiment 1 , except that the coarse- particle filter 300 is bound in the bottom part with a one-piece filtering attachment 600 made entirely of silicon.
  • the attachment is designed so that in the area inside the filter of the drain pump 300, there is a perforated bottom with circular holes of a diameter of 1.2 mm, and outside the circumference of the coarse-particle filter 300, it is a whole ring.
  • This version of the attachment in a view from below of the drain pump filter is shown in fig. 7. Comparative tests of an improved filter unit and traditional filters indicated complete separation of large particles in comparison with 80% separation for the traditional filters.

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention concerne un filtre à eau constitué d'un filtre horizontal de la pompe de lavage, d'un filtre vertical de la pompe de lavage, d'un filtre vertical de la pompe de vidange, ainsi que du collecteur. Ledit filtre à eau est caractérisé en ce qu'une bague d'étanchéité (400) est disposée entre le filtre vertical de la pompe de lavage (200) et le filtre vertical de la pompe de vidange (300) et en ce que le filtre de la pompe de vidange (300) comporte un fond perforé d'étanchéité et de filtrage (500). La bague d'étanchéité (400) et le fond perforé d'étanchéité et de filtrage (500) se situent à la même hauteur du filtre de la pompe de vidange (300).
PCT/PL2019/000055 2018-07-25 2019-07-22 Filtre à eau, en particulier pour lave-vaisselle WO2020022918A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.426451 2018-07-25
PL426451A PL426451A1 (pl) 2018-07-25 2018-07-25 Filtr wody, zwłaszcza do zmywarek

Publications (1)

Publication Number Publication Date
WO2020022918A1 true WO2020022918A1 (fr) 2020-01-30

Family

ID=67659920

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2019/000055 WO2020022918A1 (fr) 2018-07-25 2019-07-22 Filtre à eau, en particulier pour lave-vaisselle

Country Status (2)

Country Link
PL (1) PL426451A1 (fr)
WO (1) WO2020022918A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201290659Y (zh) * 2008-10-25 2009-08-19 美的集团有限公司 一种洗碗机过滤系统
EP2236073A2 (fr) * 2009-04-03 2010-10-06 LG Electronics Inc. Lave-vaisselle
US20120055518A1 (en) * 2010-09-02 2012-03-08 Minchul Kim Dishwasher
US20130032178A1 (en) * 2011-08-05 2013-02-07 Errin Whitney Gnadinger Manual removable filter system for a dishwasher
CN205585970U (zh) * 2016-01-22 2016-09-21 宁波欧琳实业有限公司 一种水槽式清洁系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201290659Y (zh) * 2008-10-25 2009-08-19 美的集团有限公司 一种洗碗机过滤系统
EP2236073A2 (fr) * 2009-04-03 2010-10-06 LG Electronics Inc. Lave-vaisselle
US20120055518A1 (en) * 2010-09-02 2012-03-08 Minchul Kim Dishwasher
US20130032178A1 (en) * 2011-08-05 2013-02-07 Errin Whitney Gnadinger Manual removable filter system for a dishwasher
CN205585970U (zh) * 2016-01-22 2016-09-21 宁波欧琳实业有限公司 一种水槽式清洁系统

Also Published As

Publication number Publication date
PL426451A1 (pl) 2020-01-27

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