EP0607105A1 - Dishwashing machine provided with a water flow division device - Google Patents
Dishwashing machine provided with a water flow division device Download PDFInfo
- Publication number
- EP0607105A1 EP0607105A1 EP94830004A EP94830004A EP0607105A1 EP 0607105 A1 EP0607105 A1 EP 0607105A1 EP 94830004 A EP94830004 A EP 94830004A EP 94830004 A EP94830004 A EP 94830004A EP 0607105 A1 EP0607105 A1 EP 0607105A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- dishwashing machine
- water flow
- flow
- sprinkler
- 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
Links
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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
- A47L15/42—Details
- A47L15/4289—Spray-pressure measuring or regulating arrangements
-
- 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 present invention concerns a dishwashing machine provided with a device for the division of the water flow between the upper and lower sprinkler, consisting in a nozzle of variable flow rate preferably achieved by the relative motion of two members of said nozzle so as to change the water flow cross-section.
- the object of the present invention is to provide a dishwashing machine capable of carrying out the above-mentioned division of the flow by means of a variable section nozzle, wherein the adjustment of the flow is preferably carried out by means of the relative motion of two members of said nozzle so as to change the water flow cross-section.
- the change of the flow rate of one nozzle involves an opposite change in the flow rate of the other nozzle, whereby it is possible to differentiate the flow and pressure of the water reaching the upper sprinkler and the lower one by acting on one nozzle only.
- the dishwashing machine has the advantage that it is possible to direct a water stream of greater intensity towards the most soiled dishes, or a stream of lower intensity towards the less soiled ones or those requiring a less vigorous washing because they are more fragile and/or more delicate.
- variable flow nozzle 1 on the roof of the washing space to feed the upper sprinkler 3; this position facilitates its adjustment by the user, but the same nozzle 1 could be alternatively positioned on the base of the space to feed the lower sprinkler 4.
- the constant capacity pump 5 supplies the water feeding the upper sprinkler 3 and the lower one 4; the change in the cross-section of nozzle 1 causes a change in the feed flow to sprinkler 3 proportional to said cross-section change, and consequently an opposite change in the flow to sprinkler 4, not considering the flow resistance in the upper supply duct 6.
- the use of the dishwashing machine is more flexible since, for example, it is possible to put the dishes soiled some hours before in the upper rack and those just soiled in the lower rack, and then increase the cross-section of nozzle 1 to make a stronger washing of the dishes on which dirt had time to stick more firmly, and this without any need to extend the washing cycle with greater water, power and detergent consumption.
- variable section nozzle wherein a fixed nozzle 7, mounted at the outlet of the upper supply duct 6 in fig.1, is integral with a central body 8 connected thereto through one or more radial fins extending between said body 8 and nozzle 7; an adjustment nut 9 is mounted on said nozzle 7 so as to shift axially with respect thereto, for example by means of a threading, and is internally shaped so that the area of the flow cross-section included between said nut 9 and body 8 changes between a maximum value with the nut completely forward (fig.2) and a minimum value with the nut completely back (fig.3).
- this minimum value could be nothing, as a limit, so as to direct the whole flow from the pump to the other sprinkler.
- the coupling between nozzle 7 and nut 9 also includes a end stop for the limitation of the maximum flow rate, which depends, however, on the pump supply capacity.
- connecting fins between body 8 and nozzle 7 are useful also for straightening the water flow so that it is less turbulent and therefore the least possible dispersion is achieved in the passage between nozzle 1 and collector 2 of the upper sprinkler 3 (fig.1).
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Washing And Drying Of Tableware (AREA)
- Nozzles (AREA)
Abstract
Description
- The present invention concerns a dishwashing machine provided with a device for the division of the water flow between the upper and lower sprinkler, consisting in a nozzle of variable flow rate preferably achieved by the relative motion of two members of said nozzle so as to change the water flow cross-section.
- In presently available dishwashing machines it is only possible an intervention to decrease the washing cycle duration for reduced loads, or the overall flow of the machine, yet without the possibility of changing the division of the flow between the upper and lower sprinkler.
- The object of the present invention is to provide a dishwashing machine capable of carrying out the above-mentioned division of the flow by means of a variable section nozzle, wherein the adjustment of the flow is preferably carried out by means of the relative motion of two members of said nozzle so as to change the water flow cross-section.
- Since the overall flow supplied by the dishwashing machine pump remains constant, the change of the flow rate of one nozzle involves an opposite change in the flow rate of the other nozzle, whereby it is possible to differentiate the flow and pressure of the water reaching the upper sprinkler and the lower one by acting on one nozzle only.
- Therefore, the dishwashing machine according to the present invention has the advantage that it is possible to direct a water stream of greater intensity towards the most soiled dishes, or a stream of lower intensity towards the less soiled ones or those requiring a less vigorous washing because they are more fragile and/or more delicate.
- This and other advantages and features of the dishwashing machine according to the present invention will be apparent from the following detailed description of a preferred embodiment thereof, reported as non-limiting example, referring to the annexed drawings, wherein:
- Fig. 1 is a partially sectional schematic front view of the present dishwashing machine, wherein the front door has been removed to expose the inner elements;
- Fig.2 is a longitudinal cross-sectional view of an embodiment of an adjustable nozzle incorporated in said machine, illustrated in the maximum flow position; and
- Fig.3 is a view similar to the preceding one with the nozzle in the minimum flow position.
- Referring to fig.1, there is seen the positioning of the variable flow nozzle 1 on the roof of the washing space to feed the
upper sprinkler 3; this position facilitates its adjustment by the user, but the same nozzle 1 could be alternatively positioned on the base of the space to feed the lower sprinkler 4. - As already mentioned above, the
constant capacity pump 5 supplies the water feeding theupper sprinkler 3 and the lower one 4; the change in the cross-section of nozzle 1 causes a change in the feed flow to sprinkler 3 proportional to said cross-section change, and consequently an opposite change in the flow to sprinkler 4, not considering the flow resistance in the upper supply duct 6. - In this way, the use of the dishwashing machine is more flexible since, for example, it is possible to put the dishes soiled some hours before in the upper rack and those just soiled in the lower rack, and then increase the cross-section of nozzle 1 to make a stronger washing of the dishes on which dirt had time to stick more firmly, and this without any need to extend the washing cycle with greater water, power and detergent consumption.
- Similarly, to wash particularly delicate dishes such as, for example, light crystal goblets or plates with non-resistant decorations, it is possible to reduce the cross-section of nozzle 1 to decrease the intensity of the stream hitting said dishes.
- Referring now to figs.2 and 3, there is illustrated an embodiment of the variable section nozzle, wherein a
fixed nozzle 7, mounted at the outlet of the upper supply duct 6 in fig.1, is integral with acentral body 8 connected thereto through one or more radial fins extending between saidbody 8 andnozzle 7; an adjustment nut 9 is mounted on saidnozzle 7 so as to shift axially with respect thereto, for example by means of a threading, and is internally shaped so that the area of the flow cross-section included between said nut 9 andbody 8 changes between a maximum value with the nut completely forward (fig.2) and a minimum value with the nut completely back (fig.3). - It should be noted that this minimum value could be nothing, as a limit, so as to direct the whole flow from the pump to the other sprinkler. Moreover, the coupling between
nozzle 7 and nut 9 also includes a end stop for the limitation of the maximum flow rate, which depends, however, on the pump supply capacity. - It should also be noted that the connecting fins between
body 8 andnozzle 7 are useful also for straightening the water flow so that it is less turbulent and therefore the least possible dispersion is achieved in the passage between nozzle 1 and collector 2 of the upper sprinkler 3 (fig.1). - Finally, it should be noted that the above described device for changing the nozzle cross-section may be replaced by a similar device, for example a bored transverse central body which is rotated to change the passage port, without the operation of the present machine being altered.
Claims (5)
- A dishwashing machine characterized in that it includes an adjustable nozzle (1) changing the division of the water flow between the upper sprinkler (3) and the lower sprinkler (4).
- A dishwashing machine according to claim 1, characterized in that said adjustable nozzle (1) comprises an adjustment nut (9) for the relative motion of two members of said nozzle (1).
- A dishwashing machine according to claim 2, characterized in that said adjustment nut (9) of nozzle (1) shifts with respect to a fixed nozzle (7) by means of a threading, said fixed nozzle (7) containing therein a central body (8).
- A dishwashing machine according to claim 1, characterized in that said nozzle (1) is positioned on the roof of the washing space of said machine.
- A dishwashing machine according to claim 4, characterized in that nozzle (1) includes members suitable to reduce the turbulence of the water flow being directed to a collector (2) of the upper sprinkler (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT93MI000017U IT229546Y1 (en) | 1993-01-11 | 1993-01-11 | DISHWASHER MACHINE WITH WATER DOOR BREAKDOWN DEVICE |
ITMI930017U | 1993-01-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0607105A1 true EP0607105A1 (en) | 1994-07-20 |
EP0607105B1 EP0607105B1 (en) | 1997-07-30 |
Family
ID=11364603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19940830004 Expired - Lifetime EP0607105B1 (en) | 1993-01-11 | 1994-01-11 | Dishwashing machine provided with a water flow division device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0607105B1 (en) |
DE (1) | DE69404485T2 (en) |
ES (1) | ES2107780T3 (en) |
IT (1) | IT229546Y1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1264570A1 (en) * | 2000-02-14 | 2002-12-11 | Matsushita Electric Industrial Co., Ltd. | Washing machine |
EP1132038A3 (en) * | 2000-02-24 | 2005-01-19 | Merloni Elettrodomestici S.p.A. | Dishwashing machine with differentiated washing capabilities |
CN102415862A (en) * | 2011-09-09 | 2012-04-18 | 佛山市顺德区美的洗涤电器制造有限公司 | Washing structure of dish washer |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8578954B2 (en) | 2009-12-21 | 2013-11-12 | Whirlpool Corporation | Spray arm assembly for a dishwasher |
DE102019211433A1 (en) | 2019-07-31 | 2021-02-04 | BSH Hausgeräte GmbH | Household dishwasher |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3064665A (en) * | 1960-12-01 | 1962-11-20 | Gen Electric | Dishwashing apparatus |
DE1949867U (en) * | 1966-04-19 | 1966-11-17 | Philips Patentverwaltung | DISHWASHING MACHINE WITH ONLY ONE CONVEYOR PUMP FOR DISPOSING WASHING WATER. |
AT280528B (en) * | 1968-03-06 | 1970-04-10 | Bosch Hausgeraete Gmbh | dishwasher |
FR2277560A1 (en) * | 1974-07-11 | 1976-02-06 | Philips Nv | PROCESS FOR WASHING DISHWASHER, AND DISHWASHER ALLOWING THE IMPLEMENTATION OF THIS PROCESS |
DE2622785B2 (en) * | 1975-05-22 | 1979-02-22 | Euro Hausgeraete Gmbh, 6680 Neunkirchen | Dishwasher with a device for controlling the pressure of the rinsing liquor in the spray arms |
-
1993
- 1993-01-11 IT IT93MI000017U patent/IT229546Y1/en active IP Right Grant
-
1994
- 1994-01-11 DE DE1994604485 patent/DE69404485T2/en not_active Expired - Fee Related
- 1994-01-11 ES ES94830004T patent/ES2107780T3/en not_active Expired - Lifetime
- 1994-01-11 EP EP19940830004 patent/EP0607105B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3064665A (en) * | 1960-12-01 | 1962-11-20 | Gen Electric | Dishwashing apparatus |
DE1949867U (en) * | 1966-04-19 | 1966-11-17 | Philips Patentverwaltung | DISHWASHING MACHINE WITH ONLY ONE CONVEYOR PUMP FOR DISPOSING WASHING WATER. |
AT280528B (en) * | 1968-03-06 | 1970-04-10 | Bosch Hausgeraete Gmbh | dishwasher |
FR2277560A1 (en) * | 1974-07-11 | 1976-02-06 | Philips Nv | PROCESS FOR WASHING DISHWASHER, AND DISHWASHER ALLOWING THE IMPLEMENTATION OF THIS PROCESS |
DE2622785B2 (en) * | 1975-05-22 | 1979-02-22 | Euro Hausgeraete Gmbh, 6680 Neunkirchen | Dishwasher with a device for controlling the pressure of the rinsing liquor in the spray arms |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1264570A1 (en) * | 2000-02-14 | 2002-12-11 | Matsushita Electric Industrial Co., Ltd. | Washing machine |
EP1264570A4 (en) * | 2000-02-14 | 2007-05-30 | Matsushita Electric Ind Co Ltd | Washing machine |
US7270132B2 (en) | 2000-02-14 | 2007-09-18 | Matsushita Electric Industrial Co., Ltd. | Washer |
EP1132038A3 (en) * | 2000-02-24 | 2005-01-19 | Merloni Elettrodomestici S.p.A. | Dishwashing machine with differentiated washing capabilities |
CN102415862A (en) * | 2011-09-09 | 2012-04-18 | 佛山市顺德区美的洗涤电器制造有限公司 | Washing structure of dish washer |
CN102415862B (en) * | 2011-09-09 | 2013-06-05 | 佛山市顺德区美的洗涤电器制造有限公司 | Washing structure of dish washer |
Also Published As
Publication number | Publication date |
---|---|
DE69404485T2 (en) | 1997-12-04 |
ITMI930017V0 (en) | 1993-01-11 |
ES2107780T3 (en) | 1997-12-01 |
IT229546Y1 (en) | 1999-01-29 |
EP0607105B1 (en) | 1997-07-30 |
DE69404485D1 (en) | 1997-09-04 |
ITMI930017U1 (en) | 1994-07-11 |
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