EP3482083B1 - Haushaltsgerät mit einem pumpenfilter - Google Patents

Haushaltsgerät mit einem pumpenfilter Download PDF

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Publication number
EP3482083B1
EP3482083B1 EP17732869.7A EP17732869A EP3482083B1 EP 3482083 B1 EP3482083 B1 EP 3482083B1 EP 17732869 A EP17732869 A EP 17732869A EP 3482083 B1 EP3482083 B1 EP 3482083B1
Authority
EP
European Patent Office
Prior art keywords
filter
pump
filter cover
fit connection
release
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
EP17732869.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3482083A1 (de
Inventor
Torsten Böttger
Kevin Hahn
Raymond Römer
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL17732869T priority Critical patent/PL3482083T3/pl
Publication of EP3482083A1 publication Critical patent/EP3482083A1/de
Application granted granted Critical
Publication of EP3482083B1 publication Critical patent/EP3482083B1/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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • 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

Definitions

  • the present invention relates to a household appliance with a pump filter.
  • the disclosure DE 10 2014 107 691 A1 describes a washing machine with a tub and a filter insert for a filter housing of a washing machine.
  • the object is achieved by a household appliance with a pump for pumping liquid, the pump having a pump housing, the pump comprising a suction chamber which has a suction connection for fluid-technical connection to a suction line, the pump having a Pump filter with a filter insert for filtering contaminants from the liquid, the suction chamber having a filter insertion opening for introducing the pump filter into the suction chamber, the pump filter having a filter cover which is designed to close the filter insertion opening in a closed position in a fluid-tight position and in a release position to release, wherein the filter cover is fastened to the pump housing by a first positive connection in the closed position, and wherein the filter cover is fastened to the pump housing by a second non-positive connection in the closed position, and in which the first positive connection and the second non-positive connection must be released in order to transfer the filter cover from the closed position into the release position and to open the filter insertion opening.
  • first positive connection and the second non-positive connection ensure that the filter cover cannot be inadvertently transferred from the closed position into the release position. In this way, an unintentional release of the filter insertion opening can be avoided, since two separate steps for the filter release are necessary.
  • This opening principle for pump filters can be used for both one-piece and two-piece pump filters, whereby for one-piece pump filters the filter insert and filter cover are combined and manufactured as one component, and where two-piece pump filters are designed so that the filter insert with the filter cover in particular has a positive locking connection in which a rotational degree of freedom between the filter cover and the filter insert remains.
  • the filter cover can be rotated or screwed around the screw longitudinal axis independent of the filter insert, so that the filter insertion opening can be closed in a fluid-tight manner without the filter insert rotating, because in this case the filter insert is only axially into the suction chamber postponed.
  • the present invention describes opening the pump by means of two separate, independent handling steps for the safe operation of pumps in household appliances which carry warm water and which enables the customer to have access to the pump for maintenance or cleaning purposes.
  • the pump filters in conventional household appliances have a filter cover which can be removed from the filter insertion opening in order to gain access to the suction chamber of the pump.
  • the user of the household appliance runs a program with a high temperature of the liquid, in particular washing liquid, there is a possibility that improper removal of the filter cover from the filter insertion opening will result in hot liquid escaping from the suction chamber and possibly scalding the user .
  • the filter cover is attached to the pump housing by a first positive connection and a second non-positive connection.
  • the differing positive and non-positive connection ensure that the filter cover can only be removed from the pump and the filter opening is released when both the first positive connection and the second non-positive connection are released.
  • the positive connection and the non-positive connection thus prevent unintentional removal of the filter cover by the user and thus an undesired escape of liquid from the suction chamber. If the liquid has been heated, the risk of scalding for the user can be reduced.
  • the differing first positive and second non-positive connection enables two separate and independently manageable operations for removing the filter cover from the filter insertion opening. This simplifies the design of the pump filter opening principle, since there is no longer any need to pay attention to a leakage volume flow emerging from the suction chamber, thus creating an additional safety advantage for the user.
  • a household appliance is understood to be a device that is used for household management. This can be a large household appliance, such as a washing machine, a dryer, a dishwasher. But this can also be a small household appliance, such as a water heater, a fully automatic coffee machine, a food processor or a carpet cleaning device.
  • the first positive connection comprises a latching connection and the second non-positive connection comprises a screw connection.
  • the second non-positive connection can only be released if the first positive connection has previously been released.
  • the first positive connection can be released by moving the filter cover in a first release direction
  • the second non-positive connection can be done by moving of the filter cover in a second release direction, the first release direction being different from the second release direction.
  • the first release direction comprises a translational first release direction, the translational first release direction extending at an angle, in particular at right angles, to a longitudinal axis of the pump, which extends from the center of the filter insertion opening into the suction chamber, and wherein the second release direction is rotational includes second release direction, wherein the rotational second release direction extends radially around the longitudinal axis of the pump.
  • the rotational second release direction which differs from the translational first release direction, means that the user has to reach around when removing the filter cover from the filter insertion opening in order to release the first positive connection and the second non-positive connection, as a result of which unintentional release the filter insertion opening is avoided.
  • the longitudinal axis of the pump extends from the center of the filter insertion opening into the suction chamber. Moving the filter cover in a translatory first release direction, which extends at an angle, in particular at right angles, to the longitudinal axis of the pump enables the first positive connection to be released. In this case, the translatory first release direction can in particular have a small rotational component. Then the pump cover in the rotary second Release direction can be rotated radially around the longitudinal axis of the pump in order to release the second non-positive connection.
  • the filter cover can be transferred from the closed position to a pre-release position when the first positive connection is released, the filter cover in the pre-release position being fastened to the pump housing by the second non-positive connection and the filter insertion opening being fluid-tight, and the filter cover can be transferred from the pre-release position to the release position when the second non-positive connection is released.
  • the pre-release position after releasing the first positive connection enables a subsequent release of the second non-positive connection to ensure that the filter cover can be easily and advantageously transferred from the pre-release position to the release position.
  • the filter cover in the pre-release position is still attached to the pump housing by the second non-positive connection and closes the filter insertion opening, so that there is no leakage volume flow either in the closed position or in the pre-release position.
  • the pump housing has an internal thread, which is arranged at the filter insertion opening
  • the filter cover has an external thread, which can be screwed into the internal thread, in order to bring the filter cover into the closed position and the second non-positive connection between to provide the filter cover and the pump housing, and wherein the external thread can be unscrewed from the internal thread in order to transfer the filter cover into the release position and to release the second non-positive connection between the filter cover and the pump housing.
  • the external thread cannot be unscrewed from the internal thread when the first positive connection is not released, and the filter cover cannot be moved into the release position.
  • the filter cover has a latching projection and a receiving opening is arranged on the pump housing, the latching projection being insertable into the receiving opening in order to transfer the filter cover into the closed position and the first positive connection between the filter cover and the To provide pump housing, and wherein the locking projection can be removed from the receiving opening, in particular by elastic deformation of the locking projection, to release the first positive connection between the filter cover and the pump housing.
  • first positive connection in particular latching connection
  • latching projection of the filter cover can be provided by inserting the latching projection of the filter cover into the, in particular undercut, receiving opening on the pump housing.
  • the latching projection can advantageously be removed from the receiving opening in order to release the latching connection and, in a subsequent step, enables the second non-positive connection to be released.
  • the pump has a receiving projection, which is arranged on an outside of the pump housing, the receiving opening being arranged in the receiving projection, and the receiving opening being designed in particular as a rectangular depression, undercut depression or component recess .
  • the receiving opening arranged in the receiving projection which is designed in particular as a rectangular depression, undercut depression or component recess, enables a particularly effective receiving of the latching projection in order to provide an effective first positive connection.
  • a damping section is arranged on an outside of the pump, which lies against an appliance housing of the household appliance in order to ensure vibration damping of the pump on the appliance housing.
  • the damping section can prevent vibrations from being transmitted from the appliance housing of the household appliance to the pump.
  • a handle element for releasing the first positive connection and for releasing the second non-positive connection is arranged on the filter cover.
  • the object is achieved by a method for removing a pump filter of a pump of a household appliance, the household appliance having a pump for pumping liquid, the pump comprising a suction chamber which has a suction connection for fluid-technical connection to a suction line , wherein the pump has a pump filter with a filter insert for filtering impurities from the liquid, and wherein the suction chamber has a filter insertion opening for inserting the pump filter into the suction chamber, and wherein the pump filter has a filter cover which is designed to have the filter insertion opening in a closed position to be closed in a fluid-tight manner and to be released in a release position, the filter cover in the closed position by a first positive connection and a second is a non-positive connection to the pump housing, the method comprising the following steps, releasing the first positive connection, and releasing the second non-positive connection in order to transfer the filter cover from the closed position into the release position and to open the filter insertion opening.
  • the first positive connection can be released in a first release direction
  • the second non-positive connection can be released in a second release direction, the first release direction being different from the second release direction.
  • the first release direction comprises a translational first release direction, the translational first release direction extending at an angle, in particular at right angles, to a longitudinal axis of the pump, which extends from the center of the filter insertion opening into the suction chamber, and the second release direction comprises a rotary one second release direction, the rotary second release direction extending radially around the longitudinal axis of the pump.
  • the rotary second release direction which differs from the translational first release direction, enables removal of the filter cover from the filter insertion opening only by reaching around the user when removing the pump filter.
  • Fig. 1 shows a schematic view of a general household appliance 100, such as a washing machine.
  • the household appliance 100 is in particular designed as a washing machine and comprises a induction bowl 101 into which detergents or other liquid substances can be filled.
  • the household appliance 100 designed as a washing machine comprises a door 103 for loading the washing machine 100 with laundry.
  • Fig. 2 shows a schematic view of a pump of the household appliance with an inserted pump filter.
  • Household appliance 100 includes a pump 105 for pumping liquid.
  • the pump 105 comprises a suction chamber 107, which has a suction nozzle 109, which in turn can be fluidly connected to the suction line in order to suck in liquid through the suction line.
  • the pump 105 further comprises one or more pressure chambers through which the liquid can be pumped out of the household appliance 100 or can be pumped around in the household appliance 100.
  • the pressure chambers and the suction line as well as hydraulic connections to the household appliance 100 on the pressure side are shown in FIG Fig. 2 not shown.
  • the pump 105 has a pump housing 111 with a filter insertion opening 113, through which a pump filter 115 can be inserted into the suction chamber 107.
  • a pump filter 115 can accumulate impurities.
  • the pump filter 115 has a filter cover 117 for closing the filter insertion opening 113.
  • the filter cover 117 is designed to close the filter insertion opening 113 in a fluid-tight manner in a closed position and to release it in a release position.
  • the pump housing 111 has an in Fig. 2 Internal thread 44, not shown, which is arranged on the filter insertion opening 113.
  • the filter cover 117 has an in Fig. 2 external thread, not shown, which can be screwed into the internal thread in order to fasten the filter cover 117 to the filter insertion opening 113 in a fluid-tight manner.
  • the filter cover 117 is up to one in Fig. 2 Filter cover stop 123, not shown, can be inserted or screwed into the filter insertion opening 113.
  • the pump filter 115 is advantageously positioned within the suction chamber 107 and advantageously seals the suction chamber 107 from the environment.
  • an additional safety function is introduced on the filter cover 117 in order to prevent the user from unintentionally removing the pump filter 115 from the suction chamber 107.
  • the filter cover 117 is fastened in the closed position to the filter insertion opening 113 by a first positive connection 125.
  • the first positive connection 125 comprises a latching connection, in particular a latching projection 127, which can be inserted into a receiving opening 129 of the pump housing 111 at the filter insertion opening 113.
  • the receiving opening 129 is arranged in a receiving projection 131 on an outside of a pump housing 111 of the pump 105 and is pocket-shaped as a rectangular, undercut depression.
  • the filter cover 117 cannot be unscrewed from the filter insertion opening 113, and the filter cover 117 can therefore not be transferred from the closed position to the release position.
  • the external thread of the filter cover 117 screwed into the internal thread of the filter insertion opening 113 provides a second non-positive connection.
  • the first positive connection 125 must first be released before the filter cover 117 can be unscrewed from the filter insertion opening 113 and the second non-positive connection can be released.
  • the first positive connection 125 can only be released in a first release direction 135, whereas the second non-positive connection can only be released in a second release direction 137, the first release direction 135 being different from the second release direction 137. This can ensure that the user of the household appliance 100 does not erroneously release the first positive connection 125 and the second non-positive connection by a single release movement or release handling.
  • the translatory first release direction 135 extends at an angle, in particular at right angles, to a longitudinal axis 139 of the pump, which in turn extends from one in Fig. 2
  • the rotary second release direction 137 extends radially around the longitudinal axis 139 of the pump.
  • a handle element 141 of the filter cover 117 is actuated by the user in the translational first release direction 135.
  • the filter cover 117 of the in Fig. 2 shown locking position in a Fig. 2 transferred pre-release position, not shown, and the first positive connection 125 is released.
  • the filter cover 117 is still fastened to the pump housing 111 by the second non-positive connection 133 and the filter insertion opening 113 is closed in a fluid-tight manner by the filter cover 117.
  • the handle element 141 of the filter cover 117 is actuated by the user in the rotary second release direction 137.
  • the filter cover 117 is moved from the pre-release position into an in Fig. 2 transferred release position, not shown, and the second non-positive connection is released.
  • the release position the first positive connection 125 and the second non-positive connection are released and the filter cover 117 can be removed from the filter insertion opening 113.
  • the filter cover 117 is finally positioned in the closed position on the filter cover stop 123, the filter cover 117 is locked by the first positive connection 125 on the pump housing 111 such that the filter cover 117 can no longer be rotated. If the filter cover 117 is to be removed, the user must first translate the latching projection 127 in the first release direction 135 from the receiving opening 129 in order to then guide the latching projection 127 past the receiving projection 131 of the pump housing 111 in the second release direction 137 when the second non-positive connection is released . This is the only way to subsequently remove the pump filter 115 by screwing it on.
  • the sensible geometric design of the pitch of the external thread on the pump filter 115 and the corresponding pitch of the internal thread on the filter insertion opening 113 ensures that after exactly one revolution of the filter cover 117 there is so much axial travel or stroke of the pump filter 115 that a renewed loosening of the the first positive connection 125 is not required repeatedly when the latching projection 127 passes the receiving projection 131 a second time.
  • the design is still designed in accordance with standards and the increase in the leakage current when the filter cover 117 is screwed on can be designed in such a way that the user receives feedback quickly enough in the event that he is scalded by the warm leakage current.
  • the increase in the leakage current can be designed to increase steadily.
  • This steady increase in leakage current can be influenced by the constructive pump housing or pump cover design, particularly in the area of the seal and the thread. This enables the leakage current to be independent of Opening angle of the filter cover 117 can increase, slowly and steadily increases and the pump opening concept is still in compliance with standards.
  • a damping section 143 is arranged on an outside of the pump housing 111 of the pump 105 Fig. 2 Appliance housing, not shown, of the household appliance 100 is present in order to ensure vibration damping of the pump 105 on the appliance housing and to meet appliance noise requirements.
  • the provision of the first positive connection 125 in addition to the second non-positive connection means that the leakage volume flow of liquid in accordance with the standard, based on an already completed screwing angle of the filter cover 117, is not specified.
  • the provision of the first form-fitting connection 125 results in less standard-related, functional and geometric dependencies in the design of the pump 105, which are also susceptible to tolerances. In the past, compliance with these dependencies for inserting the pump filter 115 into the pump 105 was always problematic because the leakage current is influenced by a large number of factors, e.g. by influencing the component tolerances of the screw components, such as filter cover 117, a filter insert of the pump filter 115, pump filter 115, pump housing 111, seals, and e.g.
  • Fig. 3 shows a sequence of a method for removing a pump filter from a pump of a household appliance.
  • the method 200 comprises, as a first step, the loosening 201 of the first positive connection 125 and, as a second step, comprises this Loosen 203 the second non-positive connection in order to expose the filter insertion opening 113.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP17732869.7A 2016-07-08 2017-06-21 Haushaltsgerät mit einem pumpenfilter Active EP3482083B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17732869T PL3482083T3 (pl) 2016-07-08 2017-06-21 Urządzenie gospodarstwa domowego z filtrem pompy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016212481.1A DE102016212481A1 (de) 2016-07-08 2016-07-08 Haushaltsgerät mit einem Pumpenfilter
PCT/EP2017/065238 WO2018007147A1 (de) 2016-07-08 2017-06-21 Haushaltsgerät mit einem pumpenfilter

Publications (2)

Publication Number Publication Date
EP3482083A1 EP3482083A1 (de) 2019-05-15
EP3482083B1 true EP3482083B1 (de) 2020-08-05

Family

ID=59215766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17732869.7A Active EP3482083B1 (de) 2016-07-08 2017-06-21 Haushaltsgerät mit einem pumpenfilter

Country Status (6)

Country Link
EP (1) EP3482083B1 (pl)
CN (1) CN109416054A (pl)
DE (1) DE102016212481A1 (pl)
PL (1) PL3482083T3 (pl)
RU (1) RU2717189C1 (pl)
WO (1) WO2018007147A1 (pl)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018201344A1 (de) * 2018-01-30 2019-08-01 BSH Hausgeräte GmbH Haushaltsgerät mit verbessertem Drehverschluss für eine Zugangsöffnung
EP4019690B1 (en) * 2020-12-23 2024-02-07 BSH Hausgeräte GmbH Washing machine with a drainage motor pump
DE102022207152A1 (de) * 2022-07-13 2024-01-18 BSH Hausgeräte GmbH Pumpe für ein Wäschepflegegerät
PL4366592T3 (pl) * 2022-09-30 2025-01-13 Ivan Mallinowski Sposób i urządzenie do wytwarzania zawiesiny
CN115897168A (zh) * 2022-11-22 2023-04-04 湖北美的洗衣机有限公司 洗衣机的排水泵和洗衣机

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Also Published As

Publication number Publication date
EP3482083A1 (de) 2019-05-15
DE102016212481A1 (de) 2018-01-11
PL3482083T3 (pl) 2021-01-11
WO2018007147A1 (de) 2018-01-11
RU2717189C1 (ru) 2020-03-18
CN109416054A (zh) 2019-03-01

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