Domestic appliance having a liquid pump

A technology of household equipment and liquid pumps, which is applied in the field of household equipment, can solve problems such as hindering the operation of pumps, and achieve the effects of avoiding blockage and stabilizing costs

Inactive Publication Date: 2015-02-18
BOSCH SIEMENS HAUSGERATE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Detergent residue can cause encrustation, which also prevents pump operation

Method used

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  • Domestic appliance having a liquid pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The figures show a liquid pump 1 with a front chamber 2 and a main chamber 3 . The liquid pump 1 is provided here as a condensate pump in the washing and drying installation W. The washing and drying device W may especially be a spin dryer or a clothes dryer.

[0036] The antechamber has an inlet 4 for injecting liquid in the form of condensate K. The condensed water K may have foreign substances such as fluff and hair and washing treatment aids dissolved therein such as detergent residues. The antechamber 2 has a passage opening 5 in its bottom, which communicates the antechamber 2 with the main chamber 3 . The through opening 5 is deeper than the injection opening 4 . If the passage opening 5 is not closed, condensation water K located in the antechamber 2 can flow through the passage opening 5 into the main chamber 3 .

[0037] The main chamber 3 has a drain opening 6 on its side walls at the level of the bottom for draining condensate K. The outlet opening 6 ca...

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PUM

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Abstract

The domestic appliance W is equipped with a liquid pump 1, wherein the liquid pump 1 has a pre-chamber 2 and a main chamber 3, wherein the pre-chamber 2 has a filling opening 4 for filling liquid K; the pre-chamber 2 and the main chamber 3 are connected to one another via a passage opening 5 which lies at a lower point than the filling opening 4; the main chamber 3 has an outlet opening for discharging the liquid K and a pressure opening 8 which is connected to an air pump 7; a valve element 9 is arranged in or with the main chamber 3, which valve element 9 is controlled by the filling level and is set up and arranged to close the passage opening 5 when a maximum filling level hmax is reached in the main chamber 3; wherein at least one filling-level sensor 10 is arranged on or in the pre-chamber 2, by means of which filling-level sensor 10 the reaching of an activation level (ha) in the pre-chamber 2 can be sensed; and wherein the liquid pump 1 is set up to activate the air pump 7 for a defined time period when the activation level ha is reached.

Description

technical field [0001] The invention relates to a domestic appliance, in particular a washing and drying appliance, which has a liquid pump, in particular a condensate pump. Background technique [0002] In the document JP 2010-35685A a liquid pump for conveying condensate in domestic appliances is disclosed. The liquid pump is a rotary lobe pump and has a chamber with a liquid level sensor. When the level of condensate in the chamber reaches a determined height, the liquid pump is activated for a determined duration in order to convey the accumulated condensate out of the chamber. [0003] Condensate water pumps are used in clothes dryers, which pump condensate water evaporated from the laundry to be dried and then condensed in the condenser into a condensate liquid container. The condensed liquid container can deliver condensed water to a drain or to wash parts of the dryer. However, condensate typically has foreign matter - such as lint, hair or detergent residue, etc....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/02F04F1/06D06F58/20D06F58/34
CPCD06F2202/085A47L2501/05D06F39/085A47L15/4225D06F2204/10F04B23/02D06F58/28F04F1/06D06F2058/2858F04D15/0218D06F33/02A47L2401/09D06F58/24D06F25/00D06F2105/24D06F58/34D06F2103/58D06F2105/36
Inventor O·德斯庞
Owner BOSCH SIEMENS HAUSGERATE GMBH
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