EP1183983B1 - Spraying device for a dishwasher - Google Patents
Spraying device for a dishwasher Download PDFInfo
- Publication number
- EP1183983B1 EP1183983B1 EP20010112330 EP01112330A EP1183983B1 EP 1183983 B1 EP1183983 B1 EP 1183983B1 EP 20010112330 EP20010112330 EP 20010112330 EP 01112330 A EP01112330 A EP 01112330A EP 1183983 B1 EP1183983 B1 EP 1183983B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spray arm
- water
- dishwasher
- water inlet
- spray
- 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.)
- Expired - Lifetime
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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
- A47L15/14—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
Definitions
- Dishwasher spraying devices consist of a spray arm, which is rotatably attached to the water supply pipe, the so-called connecting pipe.
- the water jet is brought into the spray arm via the connecting pipe at the end of which the water inlet.
- Distributed over the spray arm are outlet nozzles through which the water or the cleaning liquid is sprayed onto the dishes located in the crockery basket.
- the spray arm is set in rotary motion. This rotational movement of the spray arm about the axis of the water inlet will usually be via one or more drive nozzles which are at the periphery of the spray arm and produce a water jet substantially tangential to the direction of rotation of the spray arm.
- the drive nozzles provided at the periphery are disadvantageous, since the water issuing from them is essentially needed only for driving the spray arm and is not available for cleaning the dishes.
- a spraying device having the features of the preamble of the independent claim is known from the document EP-A-0 321 025.
- the object of the present invention is to enable a drive for a spray arm, so that the conventional drive nozzles can be completely or at least partially dispensed with and almost all the water can be used for cleaning.
- a dishwasher spraying device comprising a spray arm rotatably mounted around water inlet, the water inlet having fixed turbine blades.
- An advantageous embodiment of the invention is that in the spray arm vanes (LS) are attached.Damit the efficiency with respect to the angular momentum can be further increased.
- the spray arm can still have drive nozzles which, however, can advantageously be dimensioned smaller than heretofore.
- FIG. 1 shows a section through a spray device of a dishwasher, which consists of the connecting pipe VR and the spray arm SA.
- the spray arm SA is rotatably supported by a plain bearing GL around the water inlet WE, which is generally angled perpendicularly to the connecting pipe VR.
- Water is pumped in the direction of the arrow into the spray arm SA via the connecting pipe VR at whose end the water inlet WE is located.
- Distributed over the spray arm SA are cleaning nozzles RD by means of which the water or the cleaning liquid is sprayed onto the dishes located in the dish rack.
- the rotational movement of the spray arm about the axis A of the water inlet nozzle WE is conventionally realized via one or more drive nozzles AD, which are located at the periphery of the spray arm SA and produce a water jet counter to the direction of rotation of the spray arm SA.
- the fixed blades of the water inlet WE are designated with turbine blades TS and with guide blades LS the blades which rotate with respect to the turbine blades TS and are located in the spray arm SA.
- the turbine blades TS are here arc-shaped, but may also have a different shape.
- the person skilled in the art will receive suggestions from turbine technology for designing the blade shapes for optimized operation. This also applies to the guide vanes LS. It is only important that the blades LS, TS are shaped so that the water flowing into the spray arm generates a torque on the spray arm.
- FIG 2 In the illustration of FIG 2 is indicated with curved arrows, such as the cleaning liquid between the turbine blades TS flows through it. Since the turbine blades TS are stationary, the water is pressed against the guide vanes LS located in the spray arm SA, so that a torque is generated in the direction of rotation DR indicated by the arrow.
- the vanes LS are not necessarily provided, since a torque can also be generated via the side walls of the spray arm. But they improve the angular momentum accordingly. Of course, it is also possible to use straight guide vanes or differently shaped guide vanes LS instead of the curved guide blade LS.
- additional drive nozzles AD can be additionally provided, which, however, can generally be dimensioned much smaller than is the case with conventional spray devices. Depending on the design of the spraying device and the spray arm, it may be possible to completely dispense with the drive nozzles.
Landscapes
- Washing And Drying Of Tableware (AREA)
Description
Sprühvorrichtungen für Geschirrspülmaschinen bestehen aus einem Sprüharm, der drehbar an dem Wasserzuflußrohr, dem sogenannten Verbindungsrohr befestigt ist.Dishwasher spraying devices consist of a spray arm, which is rotatably attached to the water supply pipe, the so-called connecting pipe.
Über das Verbindungsrohr an dessen Ende sich der Wassereinlauf befindet wird der Wasserstrahl in den Sprüharm gebracht. Über den Sprüharm verteilt befinden sich Auslassdüsen über die das Wasser bzw. die Reinigungsflüssigkeit auf das im Geschirrkorb befindliche Geschirr gesprüht wird. Um alle Geschirrteile zu erreichen wird der Sprüharm in Drehbewegung versetzt. Diese Drehbewegung des Sprüharms um die Achse des Wassereinlaufs wird in der Regel über eine oder mehrere Antriebsdüsen die an der Peripherie des Sprüharms liegen und einen Wasserstrahl im wesentlichen tangential entgegen der Drehrichtung des Sprüharms erzeugen.The water jet is brought into the spray arm via the connecting pipe at the end of which the water inlet. Distributed over the spray arm are outlet nozzles through which the water or the cleaning liquid is sprayed onto the dishes located in the crockery basket. In order to reach all tableware parts, the spray arm is set in rotary motion. This rotational movement of the spray arm about the axis of the water inlet will usually be via one or more drive nozzles which are at the periphery of the spray arm and produce a water jet substantially tangential to the direction of rotation of the spray arm.
Bei den herkömmlichen Sprühvorrichtungen für Geschirrspüler sind die an der Peripherie vorgesehenen Antriebsdüsen nachteilig, da das aus ihnen austretende Wasser im wesentlichen nur zum Antrieb des Sprüharms benötigt wird und nicht für die Reinigung des Geschirrs zur Verfügung steht.In the conventional dishwasher dispensers, the drive nozzles provided at the periphery are disadvantageous, since the water issuing from them is essentially needed only for driving the spray arm and is not available for cleaning the dishes.
Insbesondere im Impulsbetrieb, d.h. im Betriebszustand, in dem mit relativ hohem Druck nur sehr kurzzeitig Wasser gesprüht wird, besteht bei herkömmlichen Sprühvorrichtungen der Nachteil, dass über die Antriebsdüsen kaum eine Drehbewegung einsetzt, weil der Wasserimpuls bereits nachgelassen hat, bevor der Drehimpuls richtig wirksam geworden ist.Especially in pulsed mode, ie in the operating state in which sprayed with relatively high pressure water only for a short time, there is the disadvantage in conventional spraying devices that hardly rotates about the drive nozzles, because the water pulse has already subsided before the angular momentum has become properly effective is.
Eine Sprühvorrichtung mit den Merkmalen des oberbegriffes des unabhängigen Anspruchs ist aus der Druckschrift EP-A-0 321 025 bekannt. Aufgabe der vorliegenden Erfindung ist es, einen Antrieb für einen Sprüharm zu ermöglichen, so dass auf die herkömmlichen Antriebsdüsen ganz oder zumindest teilweise verzichtet werden kann und fast das gesamte Wasser zum Reinigen verwendet werden kann.A spraying device having the features of the preamble of the independent claim is known from the document EP-A-0 321 025. The object of the present invention is to enable a drive for a spray arm, so that the conventional drive nozzles can be completely or at least partially dispensed with and almost all the water can be used for cleaning.
Diese Aufgabe wird durch eine Sprühvorrichtung für eine Geschirrspülmaschine bestehend aus einem Sprüharm, der drehbar um Wassereinlass angebracht ist, wobei der Wassereinlass feststehende Turbinenschaufeln aufweist, gelöst.This object is achieved by a dishwasher spraying device comprising a spray arm rotatably mounted around water inlet, the water inlet having fixed turbine blades.
Eine vorteilhafte Ausgestaltung der Erfindung besteht darin, dass im Sprüharm Leitschaufeln (LS) angebracht sind.Damit läßt sich der Wirkungsgrad hinsichtlich des Drehimpulses weiter erhöhen.An advantageous embodiment of the invention is that in the spray arm vanes (LS) are attached.Damit the efficiency with respect to the angular momentum can be further increased.
Zusätzlich dazu kann der Sprüharm noch Antriebsdüsen aufweisen, die vorteilhafterweise jedoch kleiner als bisher dimensioniert werden können.In addition to this, the spray arm can still have drive nozzles which, however, can advantageously be dimensioned smaller than heretofore.
Eine Ausbildung der Erfindung wird nachfolgend anhand der Zeichnung beschrieben. Dabei zeigen:
- Figur 1 eine Schnittdarstellung einer Sprühvorrichtung
- Figur 2 die Draufsicht gemäß Figur 1
- Figure 1 is a sectional view of a spraying device
- FIG. 2 shows the plan view according to FIG. 1
Die Darstellung gemäß FIG 1 zeigt einen Schnitt durch eine Sprühvorrichtung einer Geschirrspülmaschine, die aus dem Verbindungsrohr VR und dem Sprüharm SA besteht. Der Sprüharm SA ist über ein Gleitlager GL drehbar um den in der Regel senkrecht vom Verbindungsrohr VR abgewinkelten Wassereinlass WE gelagert.1 shows a section through a spray device of a dishwasher, which consists of the connecting pipe VR and the spray arm SA. The spray arm SA is rotatably supported by a plain bearing GL around the water inlet WE, which is generally angled perpendicularly to the connecting pipe VR.
Über das Verbindungsrohr VR an dessen Ende sich der Wassereinlass WE befindet wird Wasser in Pfeilrichtung in den Sprüharm SA gepumpt. Über den Sprüharm SA verteilt befinden sich Reinigungsdüsen RD mittels derer das Wasser bzw. die Reinigungsflüssigkeit auf das sich im Geschirrkorb befindliche Geschirr gesprüht wird. Die Drehbewegung des Sprüharms um die Achse A der Wassereinlaufdüse WE wird herkömmlich über eine oder mehrere Antriebsdüsen AD, die an der Peripherie des Sprüharms SA liegen und einen Wasserstrahl entgegen der Drehrichtung des Sprüharms SA erzeugen, realisiert.Water is pumped in the direction of the arrow into the spray arm SA via the connecting pipe VR at whose end the water inlet WE is located. Distributed over the spray arm SA are cleaning nozzles RD by means of which the water or the cleaning liquid is sprayed onto the dishes located in the dish rack. The rotational movement of the spray arm about the axis A of the water inlet nozzle WE is conventionally realized via one or more drive nozzles AD, which are located at the periphery of the spray arm SA and produce a water jet counter to the direction of rotation of the spray arm SA.
Erfindungsgemäß sind im. Bereich des Wassereinlasses, in dem das Wasser in den Sprüharm SA gesprüht wird, feststehende Turbinenschaufeln TS vorgesehen, die ebenso in der Draufsicht gemäß FIG 2 dargestellt sind.According to the invention are in. Area of the water inlet, in which the water is sprayed into the spray arm SA, provided fixed turbine blades TS, which are also shown in the plan view of FIG 2.
Im folgenden werden mit Turbinenschaufeln TS die feststehenden Schaufeln des Wassereinlasses WE bezeichnet und mit Leitschaufeln LS die sich gegenüber den Turbinenschaufeln TS drehenden, im Sprüharm SA befindlichen Schaufeln.In the following, the fixed blades of the water inlet WE are designated with turbine blades TS and with guide blades LS the blades which rotate with respect to the turbine blades TS and are located in the spray arm SA.
Die Turbinenschaufeln TS sind hier bogenförmig geformt, können aber auch eine andere Form aufweisen. Der Fachmann wird aus der Turbinentechnik entsprechende Anregungen zur Auslegung der Schaufelformen für einen optimierten Betrieb erhalten. Dies gilt auch für die Leitschaufeln LS. Wichtig ist allein, dass die Schaufeln LS, TS so geformt sind, dass das in den Sprüharm einströmende Wasser ein Drehmoment auf den Sprüharm erzeugt.The turbine blades TS are here arc-shaped, but may also have a different shape. The person skilled in the art will receive suggestions from turbine technology for designing the blade shapes for optimized operation. This also applies to the guide vanes LS. It is only important that the blades LS, TS are shaped so that the water flowing into the spray arm generates a torque on the spray arm.
In der Darstellung gemäß FIG 2 ist mit gebogenen Pfeilen angedeutet, wie die Reinigungsflüssigkeit zwischen den Turbinenschaufeln TS hindurch strömt. Da die Turbinenschaufeln TS feststehend sind, wird das Wasser an die im Sprüharm SA befindlichen Leitschaufeln LS gedrückt, so dass ein Drehmoment in der mit dem Pfeil angegebenen Drehrichtung DR erzeugt wird. Die Leitschaufeln LS sind nicht notwendiger Weise vorzusehen, da ein Drehmoment auch über die Seitenwände des Sprüharms erzeugt werden kann. Sie verbessern aber den Drehimpuls entsprechend. Anstelle der gebogenen Leitschaufel LS können selbstverständlich auch gerade Leitschaufeln oder anders geformte Leitschaufeln LS verwendet werden.In the illustration of FIG 2 is indicated with curved arrows, such as the cleaning liquid between the turbine blades TS flows through it. Since the turbine blades TS are stationary, the water is pressed against the guide vanes LS located in the spray arm SA, so that a torque is generated in the direction of rotation DR indicated by the arrow. The vanes LS are not necessarily provided, since a torque can also be generated via the side walls of the spray arm. But they improve the angular momentum accordingly. Of course, it is also possible to use straight guide vanes or differently shaped guide vanes LS instead of the curved guide blade LS.
Selbstverständlich können zusätzlich noch Antriebsdüsen AD vorgesehen werden, die jedoch in der Regel sehr viel kleiner dimensioniert werden können, als dies bei herkömmlichen Sprühvorrichtungen der Fall ist. Je nach Auslegung der Sprühvorrichtung und des Sprüharms, kann evtl. auf die Antriebsdüsen auch ganz verzichtet werden.Of course, additional drive nozzles AD can be additionally provided, which, however, can generally be dimensioned much smaller than is the case with conventional spray devices. Depending on the design of the spraying device and the spray arm, it may be possible to completely dispense with the drive nozzles.
Claims (3)
- Spray device for a dishwasher, consisting of a spray arm (SA), which is mounted rotatably about a water inlet (WE), characterised in that the water inlet (WE) has fixed turbine blades (TS).
- Spray device according to claim 1, characterised in that guide blades (LS) are mounted in the spray arm (SA).
- Spray device according to one of the preceding claims, wherein the spray arm (SA) has drive nozzles (AD).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10039880 | 2000-08-16 | ||
| DE20014038U DE20014038U1 (en) | 2000-08-16 | 2000-08-16 | Spray device for a dishwasher |
| DE20014038U | 2000-08-16 | ||
| DE2000139880 DE10039880A1 (en) | 2000-08-16 | 2000-08-16 | Spray arm for dishwashing machine has water inlet including turbine blades |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1183983A2 EP1183983A2 (en) | 2002-03-06 |
| EP1183983A3 EP1183983A3 (en) | 2003-04-02 |
| EP1183983B1 true EP1183983B1 (en) | 2006-07-12 |
Family
ID=26006705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20010112330 Expired - Lifetime EP1183983B1 (en) | 2000-08-16 | 2001-05-19 | Spraying device for a dishwasher |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1183983B1 (en) |
| DE (1) | DE50110439D1 (en) |
| TR (1) | TR200102372A2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840328B (en) * | 2019-11-28 | 2021-09-24 | 嘉兴考普诺机械科技有限公司 | Dust collector capable of cleaning glass |
| CN110876582B (en) * | 2019-11-28 | 2021-09-24 | 嘉兴考普诺机械科技有限公司 | Folding type dust collector |
| CN110859546B (en) * | 2019-11-28 | 2021-07-23 | 江西旺来科技有限公司 | Folding multifunctional dust collector |
| EP4098172A1 (en) | 2021-06-03 | 2022-12-07 | Belimed Life Science AG | Spraying device for a cleaning machine for cleaning medical, pharmaceutical and/or laboratory utensils |
| US12022988B2 (en) | 2021-09-30 | 2024-07-02 | Midea Group Co., Ltd. | High speed reusable beverage container washing system with slip ring for supplying power to a rotatable ultraviolet light |
| US12011132B2 (en) | 2021-09-30 | 2024-06-18 | Midea Group Co., Ltd. | High speed reusable beverage container washing system |
| US12035865B2 (en) | 2021-09-30 | 2024-07-16 | Midea Group Co., Ltd. | High speed reusable beverage container washing system with concentric housing members |
| US12036588B2 (en) | 2021-09-30 | 2024-07-16 | Midea Group Co., Ltd. | High speed reusable beverage container washing system with beverage container holder having retainer with lateral opening |
| US12029369B2 (en) * | 2021-09-30 | 2024-07-09 | Midea Group Co., Ltd. | High speed reusable beverage container washing system with pop-up sprayer |
| US12082761B2 (en) | 2022-06-24 | 2024-09-10 | Midea Group Co., Ltd. | Heated wash fluid circulation system for high speed reusable beverage container washing system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR589092A (en) * | 1924-01-18 | 1925-05-22 | Navarre Et Fils P | Dishwasher |
| NL122339C (en) * | 1961-05-31 | |||
| US3645453A (en) * | 1970-08-20 | 1972-02-29 | Fedders Corp | Dishwasher impeller and spray apparatus |
| DE2757615A1 (en) * | 1977-12-23 | 1979-06-28 | Licentia Gmbh | SPRAY ARM STORAGE IN DISHWASHER |
| US4298015A (en) * | 1979-12-12 | 1981-11-03 | Garza Antonio M | Dishwasher |
| US4509687A (en) * | 1983-07-20 | 1985-04-09 | General Electric Company | Multiple spray distribution system for a domestic dishwasher |
| IT213087Z2 (en) * | 1987-12-18 | 1989-10-13 | Dall Oglio Erminio | ROTATING ARMS DEVICE THROUGH A HYDRAULIC MOTOR FOR DISHWASHER MACHINE. |
| IT235026Y1 (en) * | 1994-06-16 | 2000-03-31 | Zanussi Elettrodomestici | DISHWASHER WITH ROTATING SPRAY REEL |
| US5924432A (en) * | 1995-10-17 | 1999-07-20 | Whirlpool Corporation | Dishwasher having a wash liquid recirculation system |
-
2001
- 2001-05-19 DE DE50110439T patent/DE50110439D1/en not_active Expired - Lifetime
- 2001-05-19 EP EP20010112330 patent/EP1183983B1/en not_active Expired - Lifetime
- 2001-08-16 TR TR2001/02372A patent/TR200102372A2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP1183983A2 (en) | 2002-03-06 |
| EP1183983A3 (en) | 2003-04-02 |
| DE50110439D1 (en) | 2006-08-24 |
| TR200102372A2 (en) | 2002-03-21 |
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