Household appliance

• US 20040244434A1
• Filed: 05/20/2004
• Published: 12/09/2004
• Est. Priority Date: 05/21/2003
• Status: Abandoned Application

• Current Assignee: Aweco Appliance Systems GmbH & Company KG (Sanhua Holding Group Company Limited)
• Original Assignee: Aweco Appliance Systems GmbH & Company KG (Sanhua Holding Group Company Limited)
• Inventors: Schmalz, Roland, Zucholl, Klaus, Ott, Elmar
• Application Number:
  US10/849,030
• Publication Number:
  US 20040244434A1
• Time in Patent Office: Days
• US Class Current: 68/12.16
• CPC Class Codes: A47L 15/4409 by tipping containers or opening their lids, e.g. with the help of a programmer
• CPC Class Codes: D06F 33/37 of metering of detergents or additives
• CPC Class Codes: D06F 39/028 Arrangements for selectively supplying water to detergent compartments

Abstract

A household appliance, such as a dishwasher, a washing machine, or similar apparatus, is proposed with an addition unit (9) to add cleansing agent to a cleaning liquid, which ensures reliable rinsing out of the cleansing agent chamber(s). This is accomplished according to the invention by the fact that the addition unit (9) is connected with a pressure line (7) of a rinsing pump (2) to deliver wash liquid to the addition unit (9) in order to rinse out cleansing agent located in it.

Claims

1. Household appliance such as a dishwasher, a washing machine, or similar apparatus, with an addition unit to add cleansing agent to a cleaning liquid, characterized in that the addition unit (9) is connected with a pressure line (7) of a rinsing pump (2) to deliver wash liquid to an addition unit (9) in order to rinse out cleansing agent located in it.

2. Household appliance according to claim 1, characterized in that the suction line (17) of the rinsing pump (16) is connected with a liquid reservoir (15).

3. Household appliance according to one of the preceding claims, characterized in that the suction line (6) of the rinsing pump (2) is connected with a line or a collection basin (5) for cleaning liquid.

4. Household appliance according to one of the preceding claims, characterized in that a circulation pump (2) provided for circulating the cleaning liquid in the operation of the household appliance is provided as a rinsing pump for addition unit (9).

5. Household appliance according to one of the preceding claims, characterized in that a delivery line (7) is provided that branches off from the liquid circuit of cleaning liquid to deliver a partial flow of cleaning liquid (7) into the addition unit, in order to rinse out cleansing agent located there.

6. Household appliance according to one of the preceding claims, characterized in that an on-off valve (8) is provided for optional connection of the addition unit (9) with the liquid circuit of the cleaning liquid.

7. Household appliance according to one of the preceding claims, characterized in that a control unit (11) is provided which can dispense a partial quantity of the cleansing agent located in the addition unit (9).

8. Household appliance according to one of the preceding claims, characterized in that a dispensing unit (12) including the addition unit (9) is provided which includes a control unit (11) for time-dependent switching of the on-off valve (16).

9. Household appliance according to one of the preceding claims, characterized in that a flowmeter (15) is provided for quantity-dependent switching of the on-off valve (16).

10. Household appliance according to one of the preceding claims, characterized in that the dispensing unit (12) includes a temperature sensor.

11. Household appliance according to one of the preceding claims, characterized in that the dispensing unit (12) includes a sensor (10) to determine the cleansing agent concentration.

12. Household appliance according to one of the preceding claims, characterized in that the sensor (10) to determine the cleansing agent concentration is connected with the liquid exiting from the addition unit (9).

13. Household appliance according to one of the preceding claims, characterized in that the sensor (10) to measure the cleansing agent concentration is connected with the cleaning liquid provided in the household appliance for the cleaning process.

14. Household appliance according to one of the preceding claims, characterized in that the sensor (10) to determine the cleansing agent concentration is in the form of a conductance sensor.

15. Household appliance according to one of the preceding claims, characterized in that the sensor (10) to determine the cleansing agent concentration is simultaneously provided for other functions to control the household appliance.