FR2496924A1 - METHOD FOR CONTROLLING AN ELECTROMECHANICAL PROGRAMMER APPARATUS, PROGRAMMER USING THE METHOD AND APPARATUS THUS CONTROL - Google Patents

Abstract

THE INVENTION RELATES TO A PROCESS FOR CONTROL OF AN APPARATUS WITH AN ELECTROMECHANICAL PROGRAMMER PROGRESSING STEP BY STEP. GOING FROM ONE STEP TO THE NEXT IS OBTAINED BY SUPPLYING THE ELECTRIC MOTOR OF THE PROGRAMMER THROUGH A SELF-POWERED CONTACT 6 OF THE PROGRAMMER CONNECTED IN SERIES WITH A SWITCH SENSITIVE TO OBTAINING A PHYSICAL CONDITION ( TEMPERATURE FOR EXAMPLE). THE SELF-SUPPLY CONTACT 6 IS KEPT CLOSED ON A RANGE OF SEVERAL STEPS OF CONTIGUOUS PROGRAMS P2, P3, P4, EXTREME STEPS P2, P4 IMPLEMENTING A FIRST UNIT OF THE APPLIANCE (HEATING FOR EXAMPLE). BETWEEN EXTREME PITCHES P2, P4, OTHER PITCHES P3 ARE INSERTED FOR THE IMPLEMENTATION OF AT LEAST ONE SECOND BODY OF THE APPLIANCE (SOLENOID VALVE FOR EXAMPLE). THE INVENTION ALLOWS TWO PROGRAMS TO BE WRITED ON THE PROGRAMMER BY DUPLICING ONLY CERTAIN RANGES OF THESE PROGRAMS. APPLICATION: LAUNDRY WASHING MACHINES.

Description

METHOD FOR CONTROLLING AN ELECTROMECHANICAL PROGRAMMER APPARATUS,

  PROGRAMMER USING THE METHOD AND APPARATUS THUS CONTROL

  The invention relates to a method for controlling an electromechanical programmer apparatus,

  the programmer being composed of a plurality of electrical contacts

  controlling the various organs of said apparatus and distributed around rotating disks, the closure of said contacts depending on the angular position of the driven disks

  step by an electric motor, each program step represents

  sensing the angular distance over which all the contacts occupy the same configuration,

  - the transition from one program step to the next is obtained by

  engine by means of an ignition switch

  supply whose closure is achieved by one of the disks, - the self-supply contact being connected in series with a

  a switch whose closure depends on obtaining in the

of a physical condition.

  Such methods are used in particular in the programs

  maturers of washing machines. Their disks can carry conductive tracks with which the contacts are established by rubbers. More classically, they are cams acting on levers that open and close the contacts. Currently, such discs have at most sixty positions or "no program" to run on a washing machine successive program ranges such as: prewash laundry with 249692 t heating, washes at a temperature of 40 C, 60 C , 900 C, several rinses, spin, etc ..., each range can contain several

  not. To execute a program, the user positions the program

  grammar on the first step of the first range composing this

  gram, the programmer progressing-then alone, respecting the delays and waiting for the physical conditions of the wash are performed (filling, heating, draining water including ...). When carrying out the washing operations, the washing machine bowl can be filled at different levels, or the water

  heated to different temperatures.

  Two traditional solutions are possible - either the program must be present on the programmer as much

  of possible options, from the first range (fill in

  wise from the bowl-for washing) to the last (last rinse

  or spin). Such a solution comes up against the fact that

  current grammars have a limited number of steps (60) that it is

difficult to increase.

  - or the options (filling levels,

  washing) are controlled outside the programmer by selec-

  Operators operated for this purpose by the user. This solution, by adding one or more manual controls, complicates

  still the operation of the washing machine.

  The invention aims to achieve such duplication without using these solutions. In a programmer as described in the preamble, the method according to the invention makes it possible to duplicate only the program range object of an option. This process is characterized by the fact that - the self-feeding contact is kept closed on a track

  several contiguous program steps whose extreme

  are in the implementation of a first body of the apparatus for modifying a first physical condition,

  between the extreme program steps of said range of

  are inserted others not, for the implementation

  at least one second member of the apparatus.

  In particular, applied to the washing machine already mentioned, this process is characterized by the fact that: - on the extreme program steps of the self-feeding range are fed electric heating resistances of the washing water, a thermostatic switch being connected in series with the self-feeding contact and the motor for actuating

  the latter when the set water temperature is reached.

  you. - between the extreme program steps of the self-feeding range is inserted at least one step on which a contact actuates a water filling solenoid valve of the washing machine, - the self-feeding range is immediately preceded by 'a step

  program on which a contact also operates

  trovanne. Such a method makes it possible to execute the same program of

  washing with different heights of water, the fillings at these dif-

  rent heights and the subsequent heating being the only operations

  requiring duplication of program steps.

  The invention also relates to a programmer, in particular

  household appliance, using the method described above, as well as an appliance, in particular a washing machine,

linen, thus equipped.

  The following description and drawings illustrate a

  example of application of the invention to a washing machine.

  Figure 1 shows a very simplified diagram of the wiring of the

  programmer and some of the organs of a washing machine.

  FIG. 2 is a diagram showing in particular the filling and heating phases of two nested washing programs

using the invention.

  The washing machine in question is of a type sufficient for

  classically so that it was not considered useful to represent it on the drawings. It comprises a tank intended to contain the water of

  washing or rinsing and in which for example can turn a drum

  bour containing the laundry to wash. The washing programs are executed

  cut automatically by the electromechanical disc programmer

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  of cams actuating electrical contacts. The tank is filled with water by energizing a solenoid valve that remains open both

  a water level sensor is not triggered. The water is heated

  for example by a submerged electrical resistance ("thermo-

  diver ") under the control of a thermostat The draining of the washing water is carried out by a pump ... etc. Figure 1 shows first the wiring of a solenoid valve 1 for the water filling of the washing machine tank.

  solenoid valve 1 is supplied to the terminals of the electrical network by the in-

  from one of the NB, NM, NH switches sensitive to the level (low, medium, high) of the water in the tank. The switches NB, Nil, INH

  are for example of the "pressure switch" type actuated by the static pressure

  tick of water, they are in the position of the figure (tilted to

  left) when the water level is below their level of

  Tripping. In this position, the NB switch directly

  the solenoid valve, the switches NM and NH are in series with the solenoid valve and the contacts 2 and 3 respectively of the programmer

  which allow the selection of the water level by the programmer.

  In its upright position, the NB switch makes it possible, when the water has reached the low level, to supply other parts of the machine to

  washing, such as the motor 4 of the programmer, the heating resistance

  fage 7 ... The wiring of the right position of the switches Nil and NH

was not drawn.

  The engine 4 of the programmer is for example a small

  synchronous motor. Its power supply depends, in addition to the

  low level regulator, of two elements in series: the switch 5 of a thermostat which closes when the temperature of the water reaches the set value, and a contact 6 of self-supply whose closure is controlled by the position of the programmer, therefore of the motor 4. Moreover, a heating resistor 7 (immersion heater)

  washing water is connected between the contact 6 and the supply line

  opposed, in parallel on the thermostat 5 and the motor 4.

  In the diagram of FIG. 2 are plotted on the abscissa the steps of successive programs P that the programmer of the washing machine comprises, and on the ordinate the water levels N in the tank

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  of the machine. The diagram consists of a bold line representing the evolution of the water level during the running of two programs A and B whose first ranges are nested (filling and heating), but whose final ranges are common (splashing, emptying, rinsing , etc ...). Solid lines represent the evolution

  according to program A, while the broken lines represent

  the one following program B. Below the diagram N (P) is

  figured the electrical state of the self-feeding contact 6 of the

Mateur (0 = open, 1 = closed).

  For example, program A is intended for textile washing.

  synthetic tiles requiring a medium level of water. For the result

  nier, the user positions the programmer on the program step P1 which controls the filling at the level NM, implementing (FIG 1) the solenoid valve 1, the contact 2 of the programmer, the switch NM whose switching interrupts the filling . During and / or after

  filling, a delay of two minutes for example, main-

  keeps the programmer in step Pl. During this time, the laundry can already be brewed. At the end of this delay, the embodiment of which is symbolized at 8 in FIG. 1, the motor 4 is powered and advances the programmer on step P2. In this program step, the wash water is heated to the temperature provided on the thermostat 5, the self-feeding contact 6 of the programmer being

  closed, as shown in the diagram in Figure 2. The resistance

  heating rate 7 is powered by this self-feeding contact

  6. This constant-level water heating sequence is

  on the diagram (Fig. 2) by a succession of points. When the set temperature of the thermostat 5 is reached, the motor 4

  is fed again and this, until the end of the range of auto-

  feeding, that is to say until the beginning of the program step P5.

  The programmer therefore runs without stopping program steps P3 and P4 on which the solenoid valve 1 and the heating resistor 7 are briefly fed without substantially changing the level and temperature of the water in the tank (line continuous end on the diagram). On program step P5, the laundry is brewed in hot water to which the laundry has been added. This stirring lasts 249692! 'T for example a few minutes, then the engine of the programmer is powered by the delay device 8. The following program step P6 consists of a delayed emptying of the wash water. In step P7, the bowl of the machine is filled with fresh water at high level, and the laundry is brewed for a few minutes for a first

  rinsing, then the steps P8 ... etc consist of emptying and rinsing

  successive stages, with possible spinning of the laundry.

  For example, program B is intended for textile washing.

  fine tiles (silk) requiring a lot of water. To obtain it, the use

  The user positions the programmer on the P3 program step which

  controls the filling at the NH level, using the electro-

  valve 1, contact 3 of the programmer, the switch NH. Then, the motor 4 is powered and advances the programmer on step P4. The water is heated up to the temperature set in the thermostat 5

  (for example 30 C for delicate textiles). When this temperature

  is reached, the motor 4 is fed through the thermostat and the self-feeding contact 6 and the programmer is thus advanced on the pitch P5. From this moment on, program B is

  executed in the same way as Program A described above.

ously.

  If for example programs A and B have 9 steps,

  from the first filling before washing to the last emptying after

  nishing, the nesting of the starting ranges makes it possible to use only 11 steps of program instead of 18 to juxtapose these two programs

on the programmer.

2496,924

Claims (2)

  1. A method of controlling an electronic programmer apparatus   tromechanical, - the programmer being constituted by a plurality of electrical contacts controlling the various organs of said apparatus and distributed around integral disks in rotation, the closure of said contacts depending on the angular position of the disks   driven by an electric motor step by step, every step of   gram representing the angular distance over which the whole   of the contacts occupies the same configuration, - the transition from one program step to the next being obtained by   motor power supply via an auto-contact   supply whose closure is achieved by one of the disks, - the self-supply contact being connected in series with a   a switch whose closure depends on obtaining in the   a physical condition, characterized by the fact that: the self-feeding contact is kept closed over a range of several adjacent program steps, the extreme steps of which consist in the implementation of a first component of the apparatus for modifying a first physical condition,   between the extreme program steps of said auto-range.   are inserted others not, for the implementation   at least one second organ of the apparatus ..   2. Control method according to claim 1, applied to a washing machine, characterized in that: - on the extreme program steps of the self-feeding range are fed electric heating resistors of the washing water, a thermostatic switch is connected in series with the self-supply contact and the motor to actuate it when the water set temperature is reached. between the extreme program steps of the self-feeding range is inserted at least one step on which a contact actuates a water filling solenoid valve of the washing machine, 2496) 2 -   - The self-feeding range is immediately preceded by a program step on which a contact also actuates said solenoid valve.