DE10054609A1 - Integrated washing machine drive for driving washing drum e.g. in household washing machine has bearings for drum inside container facilitate required rotation and rpm of drum - Google Patents

Abstract

The drum (1) of the washing machine is designed as a squirrel cage rotor and the container (2) as the stator for the electric drive. This is especially with the use of a three phase asynchronous. The bearings for the drum inside the container facilitate the required rotation and the rpm of the drum (rotor). The contained following the assembly has no additional opening, besides the filling opening, and the bearings support the drum directly at the container. All types of electric motor can be incorporated.

Description

initial situation

The invention relates to the drive of a washing machine drum. Such one The drive is currently realized via an indirect belt drive.

disadvantage

• - high assembly costs, logistics and storage costs
• - many individual parts of the drive system
• - Balance weights for stabilization
• - Belt drive very susceptible to wear
• - Elaborate storage technology due to additional torque due to belt tension

Accordingly, it is an object of the invention to provide a washing machine drive The type mentioned above so that the disadvantages mentioned above can be avoided and other advantages can be achieved.

This can be done in that the drive is used in other components the washing machine itself is integrated.

This task is solved by the fact that an integrated washing machine drive using the drum as a runner.  

Analysis of the invention

The patent is based on the principle of an electric motor, in which the rotor runs the The drum and the stand is the container of the washing machine.

The drum of a washing machine itself is used as a drive rotor in the invention used. This is made possible by winding in the drum as a runner are trained.

Positive effects

• - Lower assembly costs / logistics and storage costs
• - no wearing parts
• - Balance weight for stabilization is given by the laminated core
• - no additional bearing load
• - Lower acceleration forces due to the extended lever arm

side effects

• - due to complexity higher demands on system suppliers

Description of the invention

In accordance with the basic descriptions described in sketch 1 (see V. Basic sketches), the rotor of the electric motor is also used as the drum of the washing machine.

As described in sketch 2 (see V. Principle sketches), the drum has the outlet openings necessary for a washing machine for the water drain as well as the components necessary for the function of a runner.

As described in sketches 1 and 2 (see V. Principle sketches), the stand represents the normal function of a container in a washing machine (alkali collection, water inlet and water outlet). The stand contains the windings and all the components required or used for the function of an electric motor ,

Schematic diagrams (1 of 2)

The following sketches describe the function of the drum and the Container in its function as motor components using the example of a three-phase Asynchronous motor with squirrel cage.

The drum is used as the rotor of the three-phase asynchronous motor, the container takes over the function of the motor stand.

In the attached sketches mean:

in sketch 1

1

Drum = rotor ("cage winding")

2

Container = stand
in sketch

2

1

container

2

laminated cores

3

cage ring

4

drum

5

storage

6

drum axis

7

Openings for water outlet

8th

drum opening

9

windings

10

gap

Claims (2)

1. Integrated washing machine drive for driving the washing drum z. B. in a household washing machine , characterized in that the drum is used as a rotor and the container as a stand for the electric drive. This is particularly advantageous when using a three-phase asynchronous motor. 2. Storage of the washing machine drum within the container in order to enable the required concentricity and speed, characterized in that the container has no additional opening except for the filling opening after assembly and the bearings support the drum directly on the container.
The claim includes all types of electric motors in which
the stand as a container and the runner as a drum
or
the container is used as a stand and the drum as a runner as a washing machine drive
In addition to the scope of the patent described in Section IV. Claims, a patent claim is made on the storage technology by storing the drum directly in the container.
To stabilize a uniform air gap (see previous claim), the bearing should be attached directly between the drum shell and the inside of the container (see example sketches).
Benefits:
no sealing of the drive shaft necessary
higher speeds possible
even force distribution on individual bearings
even air gap between drum and container
Depending on the version, the drum axis / drum shaft can be omitted
Disadvantage:
Storage is partly in liquid
The container and drum must be designed for storage
Terms in the storage example sketch:
1 = container
2 = drum
3 = wave
4 = storage