Method for cleaning metering lines in automatically controlled laundry care devices

A clothing treatment device and automatic control technology, applied in the field of metering pipelines, can solve problems such as operation interference, and achieve the effect of saving water and time

Active Publication Date: 2010-03-31
BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In other respects, the fraction of cleaning agent in the remaining residue of the flushing solution can cause drying, deposits or fouling of surfaces on delivery equipment (pumps, valves) and can thus cause disturbances in operation

Method used

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  • Method for cleaning metering lines in automatically controlled laundry care devices

Examples

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Embodiment Construction

[0015] A laundry treatment chamber 2 is provided in the housing 1, in which laundry treatment chamber can be filled with laundry for treatment of the laundry (not shown). The laundry treatment chamber 2 may be stationary and contain a container that rotates with the laundry or that rotates itself. Inside the housing 1, in addition to parts of its inner chamber, one or more reservoirs 3 are arranged for different liquid or gel type (in any case flowable) laundry treatment agents whose The quantity can be conveyed into a common metering line 6 by means of the outlet line 4 and the metering device 5 . Doses of laundry treatment agent are delivered from the metering line 6 into the laundry treatment chamber. A flushing line 7 is connected to the highest point on the metering line 6 , which can be fed controllably by a flushing agent controller 8 from a flushing agent source 9 . The metering device 5 and the flushing agent controller 8 are supplied with signals by the control dev...

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Abstract

Flowable laundry treatment agents can be added in automatically metered dosages via a metering line 6 to a laundry treatment process by means of an automatic metering system comprising at least one reservoir 3. Advantageously, a metering line 6 of said kind is flushed with a rinsing agent, particularly water, after adding a dose. In order to prevent the development of germs in the residues of saidrinsing agents, comprising diluted residues of laundry treatment agents, when remaining in the fluid lines 6 for a longer period of time, the invention provides for the metering line 6 to be flushedimmediately before adding a dose.

Description

technical field [0001] The invention relates to a method for cleaning a metering line in an automatically controlled laundry treatment device in which a flowable laundry treatment agent is added to the laundry treatment in automatically metered doses from at least one reservoir via the metering line After the dosing, the metering line can be flushed with the aid of a flushing agent, in particular with water. Background technique [0002] This method is used in appliances and / or washing machines of the prior art (DE 3237785A1, DE 3525365A1, EP-421085A2). Water is generally used here as flushing agent, that is to say clean water directly from the mains water supply in DE 3237785A1, from the water supply (DE 3525365A19), which is known to be present in the detergent supply duct and is used to seal against Fresh water from the steam mist generated by the drum, and from the main water supply (EP-421085A2) stored in expandable quantities in the reservoir. All known techniques fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F39/08D06F39/02
CPCD06F39/088D06F39/022
Inventor I·舒尔策
Owner BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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