Water-using household appliance and method

Patent metadata

Field	Value
Publication number	US-11369248-B2
Application number	US-201816613818-A
Country	US
Kind code	B2
Filing date	Jun 15, 2018
Priority date	Jul 7, 2017
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

A water-using household appliance, in particular a household dishwashing machine, includes a wall which is made from a metal material, and a device which is made from a plastic material and fixedly connected to the wall by a laser weld.

First claim

The invention claimed is:

1. A water-using household appliance, comprising:
a wall made from a metal material, the wall having a surface structuring formed on at least a portion thereof; and
a device made from a plastic material and fixedly connected to the portion of the wall having the surface structuring by a laser weld,
wherein the surface structuring comprises a plurality of recesses arranged in a linear manner on the wall,
wherein each of the plurality of recesses extends continuously over a substantial portion of the wall having the surface structuring, and
wherein the plurality of recesses is characterized by a sawtooth appearance when viewed together in cross-section.

2. The water-using household appliance of claim 1 , constructed in the form of a household dishwashing machine.

3. The water-using household appliance of claim 1 , wherein the device includes a fastening flange which is fixedly connected to the wall by the laser weld.

4. The water-using household appliance of claim 1 , wherein the device is a heat exchanger, a water inlet or a holder for a heating wire or a heating pipe.

5. The water-using household appliance of claim 1 , wherein the device is a heat exchanger which comprises a storage portion and a functional portion connected to the storage portion.

6. The water-using household appliance of claim 1 , wherein the metal material of the wall is chromium steel or chromium-nickel steel.

7. The water-using household appliance of claim 1 , further comprising a washing container, said wall being part of the washing container.

8. A method of producing a water-using household appliance, said method comprising:
producing a surface structuring on at least a portion of a wall made from a metal material of the water-using household appliance;
arranging a device made from a plastic material on the wall, the device being disposed opposite to the portion of the wall having the surface structuring; and
laser-welding the device to the wall,
wherein the surface structuring comprises a plurality of recesses arranged in a linear manner on the wall,
wherein each of the plurality of recesses extends continuously over a substantial portion of the wall having the surface structuring, and
wherein the plurality of recesses is characterized by a sawtooth appearance when viewed together in cross-section.

9. The method of claim 8 , wherein the surface structuring is carried out by using pulsed laser beams, such that laser light is emitted in chronologically defined periods.

10. The method of claim 8 , further comprising laser-welding a fastening flange of the device to the wall.

11. The method of claim 8 for producing a household dishwashing machine.

12. The method of claim 8 , wherein the recesses are arranged horizontally in orientation on the wall.

13. The water-using household appliance of claim 1 , wherein the recesses are arranged horizontally in orientation on the wall.

Assignees

• Bsh Hausgeraete Gmbh

Inventors

• Gebauer Hans
• Haltmayer Werner
• Bisgin Sami

Classifications

• A47L15/4246 Primary

  Details of the tub (A47L15/4272 takes precedence; insulation arrangements A47L15/4209) · CPC title

• D06F39/12

  Casings; Tubs · CPC title

• A47L15/4291

  Recovery arrangements, e.g. for the recovery of energy or water · CPC title

• A47L2501/26

  Indication or alarm to the controlling device or to the user · CPC title

• B29C65/20

  with direct contact, e.g. using "mirror" · CPC title