EP1120078A1 - Domestic dishwasher - Google Patents

Domestic dishwasher Download PDF

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Publication number
EP1120078A1
EP1120078A1 EP00123838A EP00123838A EP1120078A1 EP 1120078 A1 EP1120078 A1 EP 1120078A1 EP 00123838 A EP00123838 A EP 00123838A EP 00123838 A EP00123838 A EP 00123838A EP 1120078 A1 EP1120078 A1 EP 1120078A1
Authority
EP
European Patent Office
Prior art keywords
spray device
pipe
crockery basket
spray
roof
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
EP00123838A
Other languages
German (de)
French (fr)
Other versions
EP1120078B1 (en
Inventor
Ludwin c/o Whirlpool Europe s.r.l. Rauber
Andreas c/o Whirlpool Europe s.r.l. Marettek
Thomas c/o Whirlpool Europe s.r.l. Prowald
Daniel c/o Whirlpool Europe s.r.l. Friedberg
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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 Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP1120078A1 publication Critical patent/EP1120078A1/en
Application granted granted Critical
Publication of EP1120078B1 publication Critical patent/EP1120078B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/16—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with rigidly-mounted spraying devices
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays
    • 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
    • A47L15/50—Racks ; Baskets
    • A47L15/508—Hydraulic connections for racks

Definitions

  • the invention concerns a domestic dishwasher with a spray vessel, fitted into which are one lower and one upper crockery basket each with its own spray device and in which a roof spray device is arranged above the upper crockery basket, wherein the spray devices located on the lower crockery basket are supplied directly from a circulation pump and the spray device located on the upper crockery basket and the roof spray device are supplied with spray fluid from the circulation pump through flow pipes.
  • the task of the invention in the case of a domestic dishwasher of the type mentioned above, is to achieve a separate supply to the spray devices with reduced expenditure in terms of components and assembly.
  • the flow pipes for the spray devices assigned to the upper crockery basket and for the roof spray device are preferably formed as a single-component twin-pipe, which is fitted with two connection lugs for attaching to the circulation pump, has at least one connection opening in the first pipe in the area of the spray device assigned to the upper crockery basket, and which is laid with the second pipe up to the roof spray device and which has one connection opening for the roof spray unit.
  • This twin-pipe formed as a single component achieves an independent flow of washing fluid to the spray device assigned to the upper crockery basket and to the roof spray device.
  • the required connection to the circulation pump can be achieved by looping the electrically controllable valves into the connection from the circulation pump to the spray device assigned to the lower crockery basket and into the connection from the circulation pump to the first and second pipes of the twin-pipe.
  • the quantity of washing fluid supplied can easily be adjusted, since the cross-section of the first pipe is greater than that of the second.
  • the twin-pipe can be fitted into the washing vessel without the crockery basket or the spray device assigned to it being affected, in that the twin-pipe is formed essentially as a clamp, the centre section of which is laid vertically in the washing vessel, the lower section of which is laid horizontal to the circulation pump and the upper section of which is laid horizontal to the roof spray device.
  • connections to the circulation pump and the upper spray device and also to the roof spray device are created in that the lower section at the free end is transferred to the vertical connection lugs angled downwards and also in that the connection openings for the spray device assigned to the upper crockery basket are arranged on the inner side of the clamp-based twin-pipe, and also in that the connection opening for the roof spray device is arranged on the inner side of the upper section of the twin-pipe, which is angled towards the lower section.
  • a washing vessel 11 which below the base carries a circulation pump 12, which extracts washing fluid from the sump of the washing vessel 11.
  • a circulation pump 12 which extracts washing fluid from the sump of the washing vessel 11.
  • One lower crockery basket and one upper crockery basket can be inserted into the washing vessel.
  • a lower spray arm 13 Arranged as a spray device below the lower crockery basket is a lower spray arm 13, which is connected to the outlet of the circulation pump 12 by means of a flow pipe with an integrated, electrically controllable valve. The valve is controlled by the machine's program control system. This valve is superfluous if in any program, the lower spray arm is supplied from the circulation pump 12. It is then sufficient to switch on the circulation pump 12.
  • a further spray device Arranged below the upper crockery basket is a further spray device, which can also be designed as a rotating spray arm that is moved in the direction of rotation by the washing liquid in accordance with the Segner principle. Two spray arms can also be assigned to the upper crockery basket.
  • a roof spray device is arranged below the roof of the washing vessel 11. The spray arms of the upper crockery basket and the roof spray device are supplied with washing fluid by a clamp-based, single-component twin-pipe 20.
  • the lower section uS of the twin-pipe 20 is aligned horizontally and guided below the lower spray arm 13 to the circulation pump 12, wherein the connection lugs 22 and 25 at the free end of the lower section uS lead to the outlets angled downwards and assigned to the circulation pump 12, wherein these connections run via electrically controllable valves so that they can be switched separately, as shown in Fig. 2.
  • the centre section mS of the clamp-based twin-pipe shows two connection openings 23 of the first pipe 21, to which the spray device assigned to the upper crockery basket can be connected. The two superimposed connection openings allow the spray device with crockery basket to be connected at two different levels. As the views in Figs.
  • connection openings 23 for the spray device which are assigned to the upper crockery basket, are arranged on the inner side of the centre section mS, whilst the connection opening 26 for the roof spray device is arranged on the inner side of the upper section oS angled towards the lower section uS.
  • the upper end of the twin-pipe 20 has a lug 27, by which it can be fixed into the machine frame.
  • the cross-section of the first pipe 21, through which the spray devices assigned to the upper crockery basket are supplied with washing fluid is larger than the cross-section of the second pipe 24, through which the roof spray device is supplied.
  • the clamp-based twin-pipe 20 is fitted flush to the outside of the centre section mS in the area of the rear wall of the washing vessel 11 and the sections uS and oS angled forwards are guided to the circulation pump 12 and to the roof spray device arranged below the roof of the spray container 11.
  • the connection openings 23 for the spray device assigned to the upper crockery basket are angled forwards, in order to facilitate connection.
  • the twin-pipe 20 can be produced as a single component by the plastic blow moulding process or can consist of two pipe components fitted tightly together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)

Abstract

The invention concerns a domestic dishwasher (10) with a spray vessel, fitted into which are one lower and one upper crockery basket each with its own spray device and in which a roof spray device is arranged above the upper crockery basket, wherein the spray devices (13) located on the lower crockery basket are supplied directly from a circulation pump (12) and the spray device located on the upper crockery basket and the roof spray device are supplied with spray fluid from the circulation pump (12) through flow pipes. In order to supply the spray devices with washing fluid separately, whilst still being able to use a simple flow system with low component and assembly expenditure, the invention specifies that the flow pipes for the spray devices assigned to the upper crockery basket and for the roof spray device are preferably formed as a single-component twin-pipe (20), which is fitted with two connection lugs for attaching to the circulation pump (12) and in the area of the spray device assigned to the upper crockery basket, has at least one connection opening in the first pipe and is guided with the second pipe up to the roof spray device and which has one connection opening for the roof spray unit.

Description

  • The invention concerns a domestic dishwasher with a spray vessel, fitted into which are one lower and one upper crockery basket each with its own spray device and in which a roof spray device is arranged above the upper crockery basket, wherein the spray devices located on the lower crockery basket are supplied directly from a circulation pump and the spray device located on the upper crockery basket and the roof spray device are supplied with spray fluid from the circulation pump through flow pipes.
  • Almost all current models of modern domestic dishwashers are fitted with spray devices at the three levels, as disclosed in DE 44 34 235 C1. Thus, there is increasingly more movement away from the parallel operation of the spray devices, towards the supply being handled by one or a combination of spray devices through the control system of the domestic dishwasher, wherein the choice of program can be specified. However, this requires a separate flow pipe originating in the circulation pump for each spray device. The independent impact of the washing fluid on the spray devices leads to considerable expense in terms of components and assembly for the flow pipe system.
  • The task of the invention, in the case of a domestic dishwasher of the type mentioned above, is to achieve a separate supply to the spray devices with reduced expenditure in terms of components and assembly.
  • This task is solved in accordance with the invention, in that the flow pipes for the spray devices assigned to the upper crockery basket and for the roof spray device are preferably formed as a single-component twin-pipe, which is fitted with two connection lugs for attaching to the circulation pump, has at least one connection opening in the first pipe in the area of the spray device assigned to the upper crockery basket, and which is laid with the second pipe up to the roof spray device and which has one connection opening for the roof spray unit.
  • This twin-pipe formed as a single component achieves an independent flow of washing fluid to the spray device assigned to the upper crockery basket and to the roof spray device. Thus, the required connection to the circulation pump can be achieved by looping the electrically controllable valves into the connection from the circulation pump to the spray device assigned to the lower crockery basket and into the connection from the circulation pump to the first and second pipes of the twin-pipe.
  • The quantity of washing fluid supplied can easily be adjusted, since the cross-section of the first pipe is greater than that of the second.
  • To save space, the twin-pipe can be fitted into the washing vessel without the crockery basket or the spray device assigned to it being affected, in that the twin-pipe is formed essentially as a clamp, the centre section of which is laid vertically in the washing vessel, the lower section of which is laid horizontal to the circulation pump and the upper section of which is laid horizontal to the roof spray device.
  • The connections to the circulation pump and the upper spray device and also to the roof spray device are created in that the lower section at the free end is transferred to the vertical connection lugs angled downwards and also in that the connection openings for the spray device assigned to the upper crockery basket are arranged on the inner side of the clamp-based twin-pipe, and also in that the connection opening for the roof spray device is arranged on the inner side of the upper section of the twin-pipe, which is angled towards the lower section.
  • The invention is explained in more detail by way of one of the design examples illustrated in the drawings. The following are shown:
    • Fig. 1:
    an exploded front view of the washing vessel of a domestic dishwasher with integrated twin-pipe as a washing fluid twin-pipe,
    Fig. 2:
    an exploded front view of the twin-pipe integrated into the washing vessel as shown in Fig. 1, and
    Fig. 3:
    an exploded rear view of the twin-pipe.
  • As the view in Fig. 1 shows, fitted into the machine frame 10 is a washing vessel 11, which below the base carries a circulation pump 12, which extracts washing fluid from the sump of the washing vessel 11. One lower crockery basket and one upper crockery basket can be inserted into the washing vessel. Arranged as a spray device below the lower crockery basket is a lower spray arm 13, which is connected to the outlet of the circulation pump 12 by means of a flow pipe with an integrated, electrically controllable valve. The valve is controlled by the machine's program control system. This valve is superfluous if in any program, the lower spray arm is supplied from the circulation pump 12. It is then sufficient to switch on the circulation pump 12. Arranged below the upper crockery basket is a further spray device, which can also be designed as a rotating spray arm that is moved in the direction of rotation by the washing liquid in accordance with the Segner principle. Two spray arms can also be assigned to the upper crockery basket. Finally, a roof spray device is arranged below the roof of the washing vessel 11. The spray arms of the upper crockery basket and the roof spray device are supplied with washing fluid by a clamp-based, single-component twin-pipe 20. The lower section uS of the twin-pipe 20 is aligned horizontally and guided below the lower spray arm 13 to the circulation pump 12, wherein the connection lugs 22 and 25 at the free end of the lower section uS lead to the outlets angled downwards and assigned to the circulation pump 12, wherein these connections run via electrically controllable valves so that they can be switched separately, as shown in Fig. 2. The centre section mS of the clamp-based twin-pipe shows two connection openings 23 of the first pipe 21, to which the spray device assigned to the upper crockery basket can be connected. The two superimposed connection openings allow the spray device with crockery basket to be connected at two different levels. As the views in Figs. 2 and 3 show, only the second pipe 24 is guided up to the connection opening 26 of the upper section oS and ends in the connection opening 26 for the roof spray device. The connection openings 23 for the spray device, which are assigned to the upper crockery basket, are arranged on the inner side of the centre section mS, whilst the connection opening 26 for the roof spray device is arranged on the inner side of the upper section oS angled towards the lower section uS.
  • The upper end of the twin-pipe 20 has a lug 27, by which it can be fixed into the machine frame.
  • It should also be mentioned that the cross-section of the first pipe 21, through which the spray devices assigned to the upper crockery basket are supplied with washing fluid, is larger than the cross-section of the second pipe 24, through which the roof spray device is supplied.
  • As shown by Fig. 1 the clamp-based twin-pipe 20 is fitted flush to the outside of the centre section mS in the area of the rear wall of the washing vessel 11 and the sections uS and oS angled forwards are guided to the circulation pump 12 and to the roof spray device arranged below the roof of the spray container 11. In this assembly position, the connection openings 23 for the spray device assigned to the upper crockery basket are angled forwards, in order to facilitate connection.
  • The twin-pipe 20 can be produced as a single component by the plastic blow moulding process or can consist of two pipe components fitted tightly together.

Claims (7)

  1. Domestic dishwasher with a washing vessel, fitted into which are one lower and one upper crockery basket each with its own spray device and in which a roof spray device is arranged above the upper crockery basket, wherein the spray devices located on the lower crockery basket are supplied directly from a circulation pump and the spray device located on the upper crockery basket and the roof spray device are supplied with spray fluid from the circulation pump through flow pipes,
    characterised in that
    the flow pipes (21, 24) for the spray device assigned to the upper crockery basket and for the roof spray device formed preferably as a single-component twin-pipe (20), which is fitted with two connection lugs (22, 25) for connecting to the circulation pump and in the area of the spray device assigned to the upper crockery basket, has at least one connection opening (23) in the first pipe (21) and is laid with the second pipe (24) up to the roof spray device and which has one connection opening (26) for the roof spray unit.
  2. Domestic dishwasher in accordance with Claim 1,
    characterised in that
    the cross-section of the first pipe (21) is greater than that of the second pipe.
  3. Domestic dishwasher in accordance with Claim 1 or 2,
    characterised in that
    the twin-pipe (20) is designed essentially as a clamp, the centre section (mS) of which occupies a vertical position in the washing vessel (11) and the lower section of which (uS) is laid approximately horizontally to the circulation pump-and the upper section (oS) of which is laid horizontal to the roof spray device.
  4. Domestic dishwasher in accordance with one of the Claims 1 to 3,
    characterised in that
    the lower section (uS) on the free end is transferred to the vertical connection lugs (22, 25) angled vertically downwards.
  5. Domestic dishwasher in accordance with one of the Claims 1 to 4,
    characterised in that
    the connection openings (23) for the spray devices assigned to the upper crockery basket are arranged on the inner side of the clamp-based twin-pipe (20).
  6. Domestic dishwasher in accordance with one of the Claims 1 to 5,
    characterised in that
    the connection opening (26) for the roof spray device is arranged on the internal side of the upper section (oS) of the twin-pipe (20) angled towards the lower section (uS).
  7. Domestic dishwasher in accordance with one of the Claims 1 to 6,
    characterised in that
    electrically controllable valves are looped into the connection from the circulation pump to the spray device assigned to the lower crockery basket and the connection from the circulation pump to the first and second pipes (21, 24) of the twin-pipe (20).
EP20000123838 1999-12-09 2000-11-02 Domestic dishwasher Expired - Lifetime EP1120078B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19959355 1999-12-09
DE1999159355 DE19959355C2 (en) 1999-12-09 1999-12-09 Domestic dishwasher

Publications (2)

Publication Number Publication Date
EP1120078A1 true EP1120078A1 (en) 2001-08-01
EP1120078B1 EP1120078B1 (en) 2010-01-27

Family

ID=7931990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000123838 Expired - Lifetime EP1120078B1 (en) 1999-12-09 2000-11-02 Domestic dishwasher

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EP (1) EP1120078B1 (en)
DE (2) DE19959355C2 (en)
ES (1) ES2339842T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006061161A1 (en) * 2006-12-22 2008-06-26 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher, has rinsing chamber for accommodating dish basket, and inlet pipe to connect rinsing device with pump, and including upper end turned away from pump and connected by plug connection with rinsing device
KR102474190B1 (en) * 2018-01-04 2022-12-06 엘지전자 주식회사 Dishwasher

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7012177U (en) * 1970-04-03 1970-12-10 Bosch Hausgeraete Gmbh DISHWASHER.
DE3830717A1 (en) * 1988-09-09 1990-03-22 Licentia Gmbh Dishwashing machine with three spray devices
DE4434235C1 (en) * 1994-09-24 1995-12-14 Bauknecht Hausgeraete Household dishwasher with partial load operation
EP0943281A2 (en) * 1998-02-23 1999-09-22 White Consolidated Industries, Inc. Feed system for a middle-level spray arm

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3816408A1 (en) * 1988-05-13 1989-11-16 Licentia Gmbh Dishwashing machine with a changeover device
EP0780086A3 (en) * 1995-12-22 1998-07-15 White Consolidated Industries, Inc. Water delivery tube with reservoir
DE19611054A1 (en) * 1996-03-20 1997-09-25 Bosch Siemens Hausgeraete dishwasher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7012177U (en) * 1970-04-03 1970-12-10 Bosch Hausgeraete Gmbh DISHWASHER.
DE3830717A1 (en) * 1988-09-09 1990-03-22 Licentia Gmbh Dishwashing machine with three spray devices
DE4434235C1 (en) * 1994-09-24 1995-12-14 Bauknecht Hausgeraete Household dishwasher with partial load operation
EP0943281A2 (en) * 1998-02-23 1999-09-22 White Consolidated Industries, Inc. Feed system for a middle-level spray arm

Also Published As

Publication number Publication date
EP1120078B1 (en) 2010-01-27
ES2339842T3 (en) 2010-05-26
DE19959355A1 (en) 2001-07-05
DE19959355C2 (en) 2003-11-20
DE60043770D1 (en) 2010-03-18

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