JPS5819318B2 - washing machine control device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a control device for a washing machine.

In conventional washing machines, the washing process only takes place once, and although the time for the first washing process can be set using a cam-type timer, the set time cannot be changed using the following program.

Recently, especially in dry cleaners for business use, it has become desirable to store cleaning liquid in a plurality of cleaning liquid tanks, divide the cleaning process into a plurality of times, and change the cleaning liquid for each cleaning process.

However, when a cam-type timer is used, the user cannot arbitrarily set the cleaning time from the second time onwards, but is determined by the shape of the cam.

The present invention has been devised and improved in view of the above points, and it is an object of the present invention to make it possible to set the time for the second and subsequent cleaning processes when multiple cleaning processes are performed.

It is an object of the present invention to provide a simple and economical sterilization device for a washing machine using a conventional cam timer without making the structure more complicated.

The structure of the present invention for achieving the above object will be explained based on the drawings based on the embodiments. Fig. 1 shows the main power supply circuit, 1 indicates the power supply, 2 indicates the cleaning motor, and 2 indicates the dehydration motor. .

FIG. 2 shows a control circuit connected to the power source 4.

The washing machine of the present invention has two washing liquid tanks, and the solvent in the second tank is used for rinsing.

The control circuit includes cam switches 6, 7, 8, 9, 10, 11, . . . that are driven by the program timer motor 5.
12.

Further, when the advance timer motor 48 is activated, the cam switch groups 6 to 12 are fast-forwarded at a relatively fast speed.

Furthermore, two motors are connected in series with the advance timer motor 48.
A changeover switch 13 for changing the second cleaning time during the second cleaning process is provided, and this changeover switch 13 is constituted by a so-called rotary set switch.

The present invention will now be described along with its operation. Referring to FIG. 2, when the door switch 14 and main switch 15 are closed, the cam switch group is set to the cleaning stroke, and the contact piece of the rotary changeover switch 13 is moved to any desired position. For example, if you set the selection switch 16, 17, 17'G to the 1-bath cleaning side to select 1-bath cleaning or 2-bath cleaning by matching the contacts, the power supply 4 - door switch 14 - cam switch 6 - A closed circuit of cam switch 9 - water level switch 18 - contact e of selection switch 16 - 'J switch 9 normally open switch 20 - first solvent tank liquid supply pump 21 - power supply 4 is constructed, and the first The liquid is supplied from the solvent tank.

At this time, the relay 19 is energized by the selection switch 17 and the cam switch 7 being closed.

When the predetermined liquid level is reached, the liquid level switch 18 closes the normally closed contact N.
C is switched to the normally open contact No., the liquid supply is stopped, and the electromagnetic opening/closing i23-24 for driving the cleaning motor 2 is energized via the reversal timer 22, thereby reversing the cleaning drum.

The rotation speed of the cleaning drum at this time is approximately 50 rotations per minute.

The reversal timer 22 uses a reversal timer motor 25 to alternately close both contacts.

This cleaning process continues until the contact of the cam switch 7 is opened.

Even if the cleaning switch 9 switches from the NO contact to the NC midway, the cleaning process continues without moving to the dewatering process because the normally closed switch 26 of the relay 19 is open.

58 and 59 are normally closed contacts of the electromagnetic switches 23 and 24, respectively.

Now, when the cam switch 9 is switched from the NC contact to the NC contact for the second time, the cam switch 7 is also opened, so the excitation of the relay 19 is released, and only the electromagnetic switch 23 is switched to the relay 27.
is energized via the normally closed switch 29, and the rotating drum is rotated in one direction.

30.31 is a normally closed switch of the relay 27.

The delay relay 32 is energized via the normally closed switch of the relay 27, and after a predetermined time, for example, 10 seconds, the normally open switch 33 is instantaneously closed and the normally closed switch 34 is opened.

Therefore, relay 27 is energized and its normally open switch 35
is closed and self-maintained, and the electromagnetic switch 36 for the deliquoring motor 3 is energized.

37, 37', 37'' are normally open switches of the electromagnetic switch 36, 38°38', 38'' and 39.39'
, 39'' are normally open switches of the electromagnetic switches 23 and 24, respectively.

Of course, the liquid drain valve 45 operates to drain the liquid before the liquid removal process.

Therefore, the liquid removing motor 3 is rotated and the rotary drum 53 is rotated at high speed.

However, if the rotating drum generates vibration during high-speed rotation due to an eccentric load within the rotating drum, the vibration detection switch 40 is instantaneously closed and the relay 41 is energized. is closed and self-maintained.

Therefore, the normally closed switch 43 of the relay 41 is opened and the relay 27 is deenergized, so the normally closed switches 29 and 31 of the relay 27 are respectively closed, and the rotating drum is rotated at low speed by the cleaning motor 2 for a short time. .

The dewatering motor 3 is rotated again after a predetermined time by the delay relay 32, and when the vibration is less than a predetermined value, it is rotated at high speed.

44 and 45 are drain valves which are activated by the cam switch 10. When the drain valve 44 opens, the liquid in the first solvent tank 51 is drained to the distillation tank 52, and the second drain valve 45 is opened. When opened, the liquid in the second solvent tank 54 is drained into the first solvent tank, respectively.

Note that when the vibration detection switch 40 is closed, the program timer motor 5 is stopped while the normally closed switch 46 of the relay 41 is opened and the rotating drum is rotated at a low speed.

Relay 41 is deenergized when delay relay 32 is activated.

47 indicates a normally closed switch of the relay 19.

When the cam switch 12 is closed, the three-way valve 50 is activated, and the solvent is returned to the solvent tank 51 through the filter 55.

Next, if the selection switch 16, 17, 17' is switched to the 2 bath side, the liquid supply pump 56 is activated from the second bath agent tank 54 when the cam switch 8 is switched to the normally open contact NO side. and rinsed with clean solvent.

When the second cleaning process is completed, the drain valve 45 is activated and the solvent is drained into the first solvent tank 51.

Note that a deliquid process is interposed between the first cleaning process and the second cleaning process.

If the selector switch 13 is now switched to the third contact, the process selection switch 17' is closed, so the advance is selected via the contact NO side of the cam switch 11 during the second cleaning process. The motor 48 operates to fast-forward the cam switch group, shortening the time for the second cleaning process.Furthermore, when the selector switch 13 is switched to the second contact, the contact NC of the cam switch 11 is activated. When the cam switch is closed, the advance motor 48 can be operated to rapidly advance the cam switch group.

Therefore, among the cam switches 6 to 12, 11 is used as a fast-forward cam switch.

Furthermore, if the contact of the changeover switch 13 is set to the first contact, the advance motor 48 will be operated both when the contact of the cam switch 11 is in the NC and NO state, so that the cleaning in the second cleaning process can be performed. The time can be reduced accordingly.

In addition, in the control device of the present invention, explanations of the post-deliquid solvent recovery process and the deodorizing process are omitted.

Further, the distillation of the solvent is not performed after the second cleaning step, and the distilled and purified solvent is returned to the second solvent tank 54, but the explanation of these control circuits is omitted.

57 indicates a condenser.

Therefore, according to the configuration of the present invention, the cleaning process includes two or more baths,
In addition to being able to select the first bath cleaning process, it is also possible to select the second bath cleaning time, compared to conventional products where the second bath cleaning time cannot be adjusted. Easy to use, easy to handle as a dry cleaner,
It is a stool.

[Brief explanation of drawings]

The drawings show a control device for a washing machine according to the present invention, and FIG. 1 is a main circuit diagram, FIG. 2 is a control circuit diagram, FIG. 3 is a programming diagram, and FIG. 4 is a schematic piping diagram. 51... First solvent tank, 54... Second solvent tank, 21... Eleventh liquid supply pump, 56... Second liquid supply pump, 52... Distiller, 53... Rotation Drums, 5.
...Timer motor, 11...Cam switch for rapid forwarding,
48...Advan smoke (fast forwarding device), 13.
... Changeover switch for rapid forward time selection, 17'... Changeover switch for stroke selection.

Claims (1)

[Claims] 1. A fast-forwarding device for fast-forwarding the cam switches is installed in an automatic control circuit that automatically controls each process such as cleaning, draining, and dehydrating by controlling the opening and closing of a plurality of cam switches using a timer motor. In the product, a selection switch is provided in the drive circuit of the fast-forwarding device to select between a single bath cycle in which only the solvent in one solvent tank is used and a long bath cycle in which solvents in a plurality of solvent tanks are switched and used;
A control device for a washing machine, characterized in that a changeover switch for selecting a fast forward time and a changeover switch for selecting a fast forward time are connected in series.