DE1438121A1 - Program switch - Google Patents

Description

Dr. ERNSTc.'Jiuri

MONKS 23
LEOPOLDSTR. 20 / iv

Additional patent to main patent No.
(Main patent application no.).

SAIA AQ » Murten (Switzerland)

Program switch.

To control different programs, e.g. washing programs of an automatic washing machine, is it is already known to provide a camshaft for controlling a normal program, and depending on higher-level Control means parts of this normal program by overdriving the camshaft and switching off the camshaft To skip monitored circuits and thus different Design programs. This type of program

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design has certain drawbacks. Above all else is the exploitation the available camshaft shifting steps bad, because all switching steps only with Duroh control of the full normal program are used, while with all other programs, in which certain parts of the program are omitted, which run through high speed Sehalt steps are visibly lost. Besides that there is only the possibility of shortening certain parts of the normal program, there is no great scope for program design, if not an inappropriately extensive » ie. A normal program with a large number of switching steps is provided shall be.

It is the aim of the invention to achieve better utilization of the available switching steps and improved options for program design through »that the Norcal program is both stretched in time at any point and shortened in time at other points. The shirring can thereby in a manner known per se by overdrive a Camshaft can be achieved, while the temporal expansion of program parts is thereby possible, the camshaft of a Program switch slower with effective control circuits to advance as normal.

The drawing shows an embodiment of a program switch 3 according to the invention for a washing machine shown. The program switch is equipped with a first camshaft 1, which is controlled by a stepping magnet 2

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Step by step via a latch 3 and βία indexing wheel 4 are driven char · On the camshaft 1 are different lookenechelbe arranged, with a cam disk 5 adt a rabbit 6 actuates a changeover switch 7, which in as described later at the beginning and end of the program (! ■ is controlled. Bine «wide cam disk 8 acts on one Changeover switch 9, one external contact of which is a relay 10 sum Monitored the washing process of the washing machine. while the other external contact is connected to a relay 11 is, which in the excited state the washing drum sum Drives the laundry to swing out at an increased speed. A further cam disk 12 actuates a contact 13. Which monitors the heater 14 of the washing machine in Catfish described later. A next cam disk 15 acts to a changeover switch 16. whose external contact 17 is connected to a pulse contact 18 while its external contact with the solenoid switch 2 and with a common derivative 20 of the pulse switch 18 and a pulse switch 21 connected let. Another cam disk 22 of the camshaft 1 operates on a contact 23, which over a contact 24 of a key switch described later is connected to the relay 10. The camshaft 1 carries finally two programs of the same 25 and 26th which determined Wash programs are assigned and on toggle switch 27 bsw. 28 work.

The program switch is with a synchronous motor

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or provide a suitable drive 29, which drives cam disks 31 aod 32 via transmission, not shown, the cam disk 30 when switched on Synchronous motor echlieast a contact 33 assigned to it periodically every minute while the squat washers 31 and 32 close the contacts 18 and 21 assigned to them periodically every three minutes or twice per second.

Three thermostats 34 and 36 are assigned to the program switch, the contacts of which when the thermostats are cold Assume the position shown and are switched to the other position when certain temperatures of the washing liquid assigned to each thermostat are reached.

Finally, the program switch is provided with a pushbutton panel, which has a start switch 3? with Working contacts 38 to 40, an overdrive switch 41 with Working contacts 42 and 43, a key 44 for preselecting the normal program with normally open contacts 45 to 47, a key 48 for preselection of a first modified program with normally open contacts 49, 50 and 51, and a key 52 for preselection of one second modified program with work contacts 53 bis 55 and the normally closed contact 24. The wiring of the switching elements described so far can be seen from the drawing and does not require any further explanation.

The drawing shows the program switch in the rest position, ie. the camshaft 1 is in its '! wheel position in which the rabbit 6 ο er Sj ->**' ■ - · - * ^ -? i ^ ont-.V ⁵ ·

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In the position shown, »and holds in which all keys of the keypad are activated. The thermostats 34 to 36 are all in the rest position and the synchronous motor 29 is also switched off. If, for example, the normal program is to be continuously controlled, the key 44 assigned to it is pressed and remains in the printed position, which, however, does not yet trigger any functions. When the start button 37 is pressed temporarily, the step switch 2 receives an incremental pulse via the contact 40 · the contact 7 and the contact 39. At the same time, the synchronous motor 29 receives power via the contact 38 and starts up The above-mentioned first start impulse is advanced by one step, with which the container 7 is turned over. The synchronous motor 29 now receives power even after the starter switch 37 has been switched off engage with the above. Planes are driven at speeds and switch the associated switches 33, 18 and 21 periodically. If the switch 16 is in the position shown, the pulses from the pulse switch 33 that occur periodically every minute reach the stepping magnet 2 via the contact 16 and the contact 19, so that the program wave 1 is advanced by one step per minute. For example, it is assumed that the program wave runs at this normal speed to control the prewash. the

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The heating 14 is switched on during this period by disconnecting the contact 13 via the contact 46 of the button 44 and the thermostat 34, which is assigned to the Homalprogranu, during a certain period, but it is assumed that the caustic temperature «does not rise sufficiently» during the pre-wash to flip the thermostat 34. Furthermore, it is now assumed that the contact 16 is applied to the contact 17 by the cam disk 15 at the start of the main wave. This means that the minute inputs of switch 33 no longer come directly to Bohrlttsoheltmegneten 2, but to the contact 1? contact 18 »connected in series, which is only closed every three minutes. Thus Bs come only every three minutes "namely when the switches 33 and sugleich closed, a Portschaltiapuls the 8ehrittschaltmagneten 2 _a so that the lockenvelle one old low Qeschwlndigkeit is advanced, which represents an expansion of the program sequence ·». The heater 14 is switched on again via the circuit already described above. The synchronous motor 29 can also make known contacts at relatively short time intervals of, for example, half a time. At the moment, the direction of rotation of the washing drum is reversed periodically when the relay 1 co: neither via the contact 5 nor via the contacts 23 and α. »The program continues in this way, b 5 dis i: ? .i7.ge dia has reached the prescribed temperature and the thermostat 34 switches over. The heater 14 is thus un-

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Then the thermostat 34 breaks the pulse contact 21 under voltage, vomit a rapid pulse train via this contact is delivered to the crotch holder 2 · whereby the Hookenvelle 1 la Sohnellfang is switched on until dar etroakrels is interrupted by the help contact 13. It is assumed that loekenscheiben 12 and IS selenium are coordinated in such a way that during the just mentioned release of the contact 13 also the contact 16 has already been activated again in the position shown «so that now a further switching the camshaft 1 at noramler speed once successes per minute. It will therefore now be washed again and swar during a time which is clearly determined by the nature of the firmly predetermined squats 12 and 15 1st and at which the caustic temperature is practically maintained · This makes it possible thanks to the division of the washing process into a slow gear, a quick intermediate gear and a final gear with normal speed in any case sufficient Tent door available to keep the lye at the set temperature to be heated and subsequently at this temperature only during a specific, fixed setting for each program Tent, wash it. A similar division into stretched or gathered program sections can of course also be used other parts of the wash program: .s, where the individual gaits of the camshaft 1 are also controlled by organs other than the cam disks themselves or the thermostats can be. Has the program been completed

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run, the contact 7 is switched to the position shown ι with which the synchronous motor 29 is stopped. Means can also be provided with which the pressed program tests is automatically ejected at this point «in order to also switch off the other circuits. In any case but the program switch remains in its end position * and the cam disks are dimensioned so that in this Position all controlled machine parts are switched off «even if the program button remains switched on.

If, for example, the first modified program is now to be run through, the program key 48 is first pressed, with which the remaining program keys can be automatically ejected, and then the start key is pressed again. The processes described above take place and the camshaft 1 begins to run. The changeover switch 27 now activated via contact 49 makes the other control circuits effective in the position shown. However, if the contact 27 is reversed by the program disc 25, the remaining control circuits become ineffective and the pulse contact 21 is energized, whereby the camshaft 1 is advanced in overdrive when the control circuits are ineffective until the contact 27 is reversed into the position shown. The program disc 25 thus only causes the normal program described above to be shortened at certain points under all circumstances. It can therefore also with this modified Progr & K? ' ge . \? * -

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play the same processes as in connection with the normal program for the main wash. Through the cam 25 but the tendon canal within the main character can be extended and thus the effective Wasohzelt can be lowered at a great temperature. By the way, this washing temperature will be when the button 48 is active via the contact 50 monitored by the thermostat 35 and will therefore be a different than in the Mormal program.

As mentioned above, the control circuits of the program switch is switched off »when contact 27 is in the Sonel aisle position is shifted. 8s may be desirable · such a switch-off also during the overdrive periods of the full program · to which Zve ο Ice the feed the control circuits could always be interrupted by a relay «when the sonar gang contact 21 is energized.

To go through the second modified program, the key 52 is pressed, and the program switch in the described manner by pressing the start button 37 is set in Oang. Exactly the same processes take place as described above for the first modified program, but the additional sonic gait periods are via contact 53 determined by the contact 28 or the disk 26. The suds temperature is monitored via the contact 54 by the thermostat 36. When button 52 is pressed, contact 24 is open, so that the relay 10 is monitored exclusively by the contact 9. The cam 8 controlling the contact 9 is

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now, for example, designed so that they can be used during one or several parts of the Wasohens during successive switch positions alternately the contact 9 in the shown Position or in a neutral central position. It will therefore »if the relay 10 is monitored exclusively by contact 9 will, s.B. always during a stop position of the camshaft 1, washed with a rotating washing drum and during the next switching step the washing drum is stopped. The second modified program, which has these conditions be created by opening the contact 24, thus allowed a particularly gentle treatment of the items to be washed. In the other programs in which contact 24 is closed remains, depending on the configuration of the cam plate 22 periodic shutdown of the washing drum during at least part of the washing cycle is not permitted, so there is a normal program as well as the first modified program are intended for items to be washed »which require less gentle treatment.

To arbitrarily skip certain parts of the program » the overdrive button 41 is actuated, via the contact 42 of the pulse switch 21 is fed, while the contact 43 connects to the Network.

Of course, more than three scope speeds could optionally also be provided, with always low speeds Speeds are used there, toilet one and the same

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Operation s.B. Washing to be carried out during a longer tent 1st while switching is faster when switching is required frequently · see B. with «Spilling and swinging the laundry.

It would also be possible to stop the camshaft at all for the expansion of certain program points. where the Synchronous motor 29 continues to run, but e.g. the pulse contact is made ineffective by opening a contact connected in series. So it is here as in the illustrated Ausführungsbelspiel a variable life between the synchronous motor and the camshaft 1 placed. The main advantage is “that the synchronous motor continues to run and switchovers of secondary importance s.B. The reversal of the washing drum, look for when the camshaft 1 is moving very slowly or not at all can make.

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Claims (1)

U38121 PATENT CLAIMS 1) Program switch according to the main patent no. (Patent application no.) I with jointly driven Control organs of a normal program, characterized in that «drive means are present, which the control organs except at a normal speed to control the Normal program and at increased speed for a short time of parts of the normal program also at reduced speed to stretch parts of the normal program allow. 2) Program switch according to claim 1, characterized in that the normal program is gathered or stretched in compliance with certain control organs and at the same time as a function of at least some free physical variable _8, for example a temperature. 3) Program switch according to claim 2s sum controlling a machine 3, characterized _a that the program g $ »is stretched until a desired temperature of the lye is reached !; is. 4) Program switch according to one of claims 1 Hiss 3, characterized in that _s is between aingesefialtet a constantly running gleichmäeslg Anteiebsorg © si ₃ aB a SyasteßiMaotors and the control members aia variable Setriebe. 3) Prograiaissefaajlfcss? aaeh Ansprmsh 4 _3, characterized i that the drive element Impulskoxitakte salt η η α ö jjj π 7 ο "k w "<* * j w &. £ * f vj & ■ ^ ^- « rf H38121 The frequency actuated and that the pulse contacts are optional can be connected to a switching magnet for the control elements are 6) program switch according to one of claims 1 to 5, indicated that the parts of the normal programs, which are to be stretched »are firmly predetermined and that program changes by gathering parts of the program. 7) Program switch according to claim 6, old a camshaft carrying the control elements, e.g. cam disks, characterized in that a camshaft seated on the camshaft Cam disc (15) for all programs stretched »and normal Controls parts of the rotation of the camshaft. 8) program switch according to claim? * Characterized in that that program slices assigned to individual programs (25, 26) of the camshaft (1) Sonellgangteile of the camshaft movement determine. 9) program holder according to claim 7 and 8, characterized marked that measuring devices, a.B · thermostats provided are «which overdrive parts determine camshaft rotation. Pll ** · B ain. A _ fl _ _ BATH 009822/0293 Blank page