DE6605437U - AUTOMATICALLY CONTROLLED WASHING MACHINE IN WHICH THE LAUNDRY CAN ALSO BE SPINNED. - Google Patents

Description

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SIEMENS-SLECTROGERAiEGMBS '"» ·' »ϊ» »Erlangen, * ■

Berlin and Munich Werner-von-Siemens-Str. 50

Our reference: VPA 67/5012 Gre / Zp

Automatically controlled washing machine in which the laundry can also be spun

For the operation of fully automatic machines, i. H. of automatically controlled Washing machines that also allow the laundry to be spun are often pole-changing, single-phase asynchronous motors used e.g. B. with 12 and 2 poles. The current in the Motorhilfδι, phase is at a speed that is far below the synchronous rotation number lies, d. H. shortly after switching to the two-pole winding, because of the low reactance in the winding tiny. As a result, the torque of the motor is also small.

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In order to bring the spin drum, filled with laundry and possibly braked by water, to the slip speed (nominal speed), but nan needs a certain starting torque, which you can get through can achieve an additional capacitor called a starting capacitor.

The capacitor and the auxiliary phase winding must now be on top of one another be coordinated that at the nominal speed of the current flowing in the auxiliary phase for generation and maintenance of the rotating field has a capacitive character. The starting capacitor and the operating capacitor compensate together at the rated speed However, the reactance of the winding completely, so that the very large resonance current flows, which under certain circumstances can even become inductive and then restore the torque. A high current (2 to 5 times the nominal current) and an inductive one Phasing are disadvantageous. The starting capacitor should are therefore switched off when the rated speed is reached, because then to maintain a sufficient torque of the simple electricity is enough. Since the spin-up time only takes about 10 seconds, it can then be switched off.

innovation
The SÜäaaäasffig relates to an automatically controlled washing machine in which the laundry can also be spun and which for this purpose has a lid lock and a poluircchaltbaren single-phase asynchronous motor with an operating capacitor and with a during the transition phase from the low to the high speed as torque amplification is equipped with an optional starting capacitor and aims to achieve a

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To create a device by which the shutdown of the starting capacitor can take place at a suitable time without significant additional effort.

Innovation For this purpose it is proposed according to the} & £ Xx & KXg that the

The bimetal with a switch that causes the lid to be locked is provided, which causes the shutdown of the starting capacitor after the washing machine has started up. In this way one comes to a watch-safe device that is simple is constructed and their switching elements in the machine - innovation

\ why are needed. In the device according to

only an additional switch on the bimetal and the corresponding wiring must be provided.

innovation

In the drawing, an embodiment of the £ κ £ κκ * κκ £ is shown »

^x arin shows:

/ ■ - Jig. 1 shows a schematic vertical section through

such a tumbling machine used for spinning

and

innovation

Pig. 2 a circuit and arrangement diagram for the

essential elements.

Figure 1 shows a drum washing machine also used for spinning, whose drum 11 is arranged in a tub 12

is, which in turn is surrounded by a housing 13. The drum is driven in the usual way by an electric motor 15 via a belt drive 14. The housing 13 has a cover 16 closed, with a locking device shown in FIG is provided.

The electric motor 15 is formed as polüEsekalifearer An engine and has for reversing the drum in the wash cycle, two identical windings 21 and 22 act alternately as main and auxiliary phase. The reversing device is omitted in the illustrated switching mechanism, because the dryer always rotates in one direction during the spin cycle that is only of interest. In this case, the winding 21 is always the main phase, while the winding 22, with which the operating capacitor 23 is in series, takes over the function of the auxiliary phase. A second capacitor 24, which is switched on during the start-up time, is located parallel to the electrical generator 23. In its circuit there is a switch 25, which is the cable of the lid lock.

The lid lock consists essentially of a two-armed one Lever 32, the pawl 33 of which works together with a correspondingly formed pawl 31 arranged on the edge of the cover 16. The lock is released when the one Aria of the lever 32 is moved in the direction of arrow 34 by suitable means. Un while the door is running: the opening of the To prevent cover, a Yerriegelungstolzen is from a bimetal 41 42 pressed into the opening path of the lever 32 so that

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the interlocking pawls 31 and 33 are not released can. The bimetal operates a plunger 43 arranged in its housing 44 switch 25, which is in the circuit of the Starting capacitor 24 is located. In this way, de * · start-up = condenser after the run-up time, which only takes a few seconds, the spin dryer through the meanwhile heated bimetal

Claims (1)

J J J: J protection iarineirct claim 1. Automatically controlled washing machine in which the laundry can also be spun and which for this purpose has a lid lock and a pole-changing single-phase asynchronous notor "which works with an operating capacitor and with one during the transition phase from low to high speed Torque reinforcement switchable starting capacitor is equipped, characterized in that the bi-metal (41) causing the lid locking is provided with a switch (25) which switches off the starting capacitor (24) after the washing machine has started up.