Dishwashing machine having a dosing device for additives and associated method

• US 7,789,967 B2
• Filed: 12/08/2004
• Issued: 09/07/2010
• Est. Priority Date: 12/16/2003
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Bosch und Siemens Hausgerã¤Te GmbH (Robert Bosch GmbH)
• Inventors: Classen, Egbert, Jerg, Helmut
• Primary Examiner(s): Kornakov; Michael
• Assistant Examiner(s): CAMPBELL, NATASHA N.
• Application Number:
  US10/582,246
• Publication Number:
  US 20070144558A1
• Time in Patent Office: 2,099 Days
• Field of Search: 134/18, 134/25.2, 134/26, 134/29, 134/56.D
• US Class Current: 134/18
• CPC Class Codes: A47L 15/4418 in the form of liquids A47L15/4409, A47L15/4436, A47L15/4445 take precedence

Abstract

A dish washing machine is provided having a dosing device operable to add an additive product into the dishwasher, the dosing device being operatively connected to an arrangement that separately stores the basic chemical products of an all-round additive product independent of one another. The dosing device is operable to independently add into the dishwasher one basic chemical product not used for clear rinsing of the all-round additive product, at least two, but not all, of the basic chemical products of the all-round additive product together, or at least one reaction mixture consisting of the basic chemical products of the all-round additive product.

Claims

1. A dishwashing machine comprising:

a washing container for retaining therein items to be washed; and

a dosing device operable to add an additive product into the dishwashing machine, the dosing device being operatively connected to an arrangement that separately stores the basic chemical products of an all-round additive product independent of one another and the dosing device being operable to independently add into the dishwasher;

     1) at least a portion of a selected one of at least one basic chemical product of the all-round additive product not used for clear rinsing,

     2) at least two, but not all, of the basic chemical products of the all-round additive product together, and

     3) at least one reaction mixture including the basic chemical products of the all-round additive product.

2. The dishwashing machine according to claim 1, wherein the dosing device includes a micro-reactor operable to produce a reaction mixture that is a selected one of completely a liquid mixture, completely a gas mixture, and a mixture that is not completely a liquid or a gas, the micro-reactor being operable to produce the reaction mixture at least in part by a chemical reaction.

3. The dishwashing machine according to claim 1, wherein the dosing device is operable to add into the dishwasher only those basic chemical products or reaction mixtures that are required for a process step.

4. The dishwashing machine according to claim 1, wherein the dosing device is operable to add in basic chemical products of an all-round additive product that are stored in at least one of a plurality of refillable storage containers and of a plurality of exchangeable storage containers, wherein the at least one of a plurality of refillable storage containers and of a plurality of exchangeable storage containers are configured in at least one container form including at least one of a common housing with partition walls and individual separate units, and a container form that is not at least one of a common housing with partition walls and individual separate units.

5. The dishwashing machine according to claim 1, wherein the dosing device is operable to add in basic chemical products of an all-round additive product that are one of a liquid, a gel and at least one of a powdery solid and a granular solid, wherein the basic chemical products are formed as one of a concentrate and not a concentrate.

6. The dishwashing machine according to claim 1, wherein the dosing device is operable to add in basic chemical products of an all-round additive product wherein the basic chemical products are supplied to at least one of a micro-reactor and the washing container using a conveying device, wherein the conveying device includes at least one of a micro-dosing pump and a device that is not a micro-dosing pump.

7. The dishwashing machine according to claim 1, wherein the dosing device is operable to add in basic chemical products of an all-round additive product while regulating the addition parameters, time and quantity of the basic chemical products or the reaction mixture for a process step depending on the process steps and/or actual contamination that is detected automatically using sensors or manually.

8. The dishwashing machine according to claim 1, wherein the dosing device is operable to add in basic chemical products of an all-round additive product while regulating the supply of at least one of the basic chemical products a reaction mixture by means of a monitoring device and wherein the dosing device is configured to produce an program interruption in response to at least one of a fault, a visual fault indication and an audible fault indication.

9. The dishwashing machine according to claim 1 and further comprising a plurality of storage containers and a plurality of level sensors for measuring a filling level in the storage containers in which are stored the basic chemical products of an all-round additive product and a fill level value indicator, and a low level alarm for generating at least one of a visual warning and an audible warning if a level is too low.

10. The dishwashing machine according to claim 9 and further comprising an internet connection, means for automatically notifying a dispatch device concerning the filling level of the storage containers and means for dispatching, if required, basic chemical products in at least one of exchangeable storage containers and storage packs for refilling the storage containers.

11. A method for dosing additives, the method comprising:

providing a dishwashing machine having a washing container for handling of items to be retained and washed;

providing an arrangement that separately stores basic chemical products of an all-round additive product, independent of one another;

providing a dosing device operatively connected to the arrangement, to provide a dose of said additive product to the dishwashing machine; and

using the dosing device to selectively dose into the dishwashing machine the additive product in each of the following modes;

1) a first mode of dosing at least a portion of a selected one of at least one basic chemical product of the all-round additive product not used for clear rinsing;

     2) a second mode of dosing at least two, but not all, of the basic chemical products of the all-round additive product together; and

     3) a third mode of dosing at least one reaction mixture consisting of the basic chemical products of the all-round additive product.

12. The method according to claim 11, wherein the step of dosing into the dishwashing machine an additive product includes dosing in only those basic chemical products or reaction mixtures that are required for a process step using a conveying device.

13. The method according to claim 11, wherein the step of dosing into the dishwashing machine an additive product includes dosing in basic chemical products of an all-round additive product that have been reacted together in a micro-reactor at least partly by a chemical reaction to form a reaction mixture that is a selected one of completely a liquid mixture, completely a gas mixture, and a mixture that is not completely a liquid or a gas.

14. The method according to claim 11, wherein the step of dosing into the dishwashing machine an additive product includes dosing in basic chemical products of an all-round additive product that have been reacted together in a micro-reactor with these basic chemical products being supplied to at least one of the micro-reactor and the washing container in a precisely metered manner by a micro-dosing pump.

15. The method according to claim 11, wherein the step of dosing into the dishwashing machine an additive product includes dosing in an additive product while regulating the addition parameters, time and quantity of the basic chemical products or the reaction mixture for a process step depending on the process steps and/or the actual contamination that is detected automatically using sensors or manually.