JPS646800B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a test operation control method for checking the operation of each input function and output function.

[Prior art and its problems]

Automated washing machines operate by automatically switching processes such as washing, rinsing, and spin-drying in a preset order and time, but the program timer of such washing machines has a cam and contact mechanism. There are two types of timers: mechanical timers with built-in timers and electronically controlled timers with built-in microcomputers.

Among these, the electronically controlled type is one example of the second type.
As shown in the figure, a control device 1 in which the order and times of processes such as washing, rinsing, and spin-drying are set and memorized includes a washing, rinsing, and spin-drying course start switch 3 as an input section, motor operation time of standard course, etc. For example, select switches 4, 5, 6 for "washing", "rinsing number", "dehydration", which change the opening and closing of the valves as appropriate;
In addition, there is a changeover switch 7 for operation check, a water level switch 8 that switches the electric circuit when the amount of water in the washing tub reaches a specified water level, or when the water level drops after draining water, and when the lid is opened during spin-drying or when the water spin-dries. When an extreme imbalance of dehydrated material occurs in the
Output signals are introduced from a lid switch 9 that cuts off power to the machine and an unbalance switch 10 that detects whether the laundry is shifted to one side during spin-drying.

In addition, as an output part, there is a forward/reverse rotation motor 11 for driving, a solenoid 12 that operates the drain valve, a water supply valve 13 that supplies the required amount of tap water into the tank, and one of the functions of "washing", "rinsing", and "dehydration". Display lamps 17, 18, and 19 made of, for example, light emitting diodes (LEDs) are provided to indicate which process is in progress, and output signals from the control device 1 are introduced into these output sections. In the figure, 14, 15, and 16 indicate current limiting resistors connected in series to the indicator lamps 17, 18, and 19.

To perform a normal washing operation in this way, put the laundry and detergent into the washing tub, and turn on the course start switch 3 and select switch 4, if necessary.
5 and 6 are closed, the output signals from these switches 3 to 6 enter the control device 1, where the washing course is set, and the input signals from the water level switch 8, lid switch 9, and imbalance switch 10 set the washing course. Then, an output signal based on the course is sent from the control device 1 to the motor 11, solenoid 12, and water supply valve 13, and the processes of water supply, washing, drainage, rinsing, and dehydration are carried out.
Operation control is performed to automatically switch according to the set course. At the same time, the display lamps 17, 18, and 19 sequentially light up and display the processes currently in progress.

By the way, when checking the functions of the input and output parts for repair, inspection, function check during manufacturing, etc., the input/output function check is performed by closing the operation check changeover switch 7 and switching to the test operation process. However, in such a case, the conventional method is to shorten the time of each process by using the same input/output configuration as in the normal operation, or to turn each process on and off in an appropriate order for an appropriate time. Checking input/output functions.

However, if this method does not operate normally, it may not be possible to determine whether the input function or output function is defective, and in such cases it is necessary to check the input function and output function individually again. As a result, confirmation takes time and the confirmation process becomes complicated, which may lead to errors in judgment.

[Purpose of the invention]

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
It is an object of the present invention to provide a test operation control method for a washing machine that can easily and accurately check input/output functions for repair or inspection without complicating the configuration of a control device.

[Key points of the invention]

However, according to the present invention, the purpose of this lever is to provide a manually switchable input section for test operations in a washing machine in which the sequence and time of processes such as washing, rinsing, and dehydration can be set in advance in a fixed manner or arbitrarily. and checking the input/output function by rearranging the input section and the output section so that the correspondence relationship between the input section and the output section is different from that used for normal washing operation based on the output from the input section. This is achieved by

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to the drawings.

The structure of the washing machine control device, input section, and output section used in the washing machine test operation control method of the present invention is the same as that of the conventional one, and as shown in FIG. course start switch 3, which changes the motor operating time and valve opening/closing as appropriate; for example, select switches 4, 5, 6 for "wash", "rinsing", and "spin"; and 6 operation check changeover switches that change normal washing operation to test operation. 7. A water level switch that switches the electric circuit when the amount of water in the washing tub reaches the specified water level or when the water level drops after draining water. A lid switch 9 that cuts off the power to the motor when the motor is dehydrated, and an unbalance switch 10 that detects the shifting of the laundry during spin-drying are provided, and output signals from these input switches 3 to 10 are introduced into the control device 1.

In addition, as an output part, there is a forward/reverse rotation motor 11 for driving, a solenoid 12 for operating the drain valve, a water supply valve 13 for supplying the required amount of tap water into the tank, and which process among "washing", "rinsing" and "dehydration". e.g. a light emitting diode (LED) to indicate what is in progress
Indicator lamps 17, 18, and 19 were provided, and output signals from the control device 1 were introduced into these output sections. In the figure, 14, 15, 16 are the indicator lamps 1.
7, 18, and 19 show resistors connected in series.

Next, the test operation control method will be explained using the chart in Fig. 1. To perform normal washing, rinsing, and spin-drying washing operations, open the operation check changeover switch 7 (step 1) in the same way as above, and start the normal operation. Set the desired process to the control device 1 using the course start switch 3 and select switches 4 to 6.
If it is set (step 2), the output is output to the water supply valve 13, motor 11, and other output parts based on this step, and the operation is automatically controlled.

To check the operation of the input and output functions of the input section and output section, close the operation check changeover switch 7 (step 1).
The output signal from the switch 3 enters the control device 1 to switch to the test operation process, and then close the course start switch 3 (step 3). The signal enters the clockwise rotation drive circuit of the motor 11, and the motor 11 starts rotating clockwise (step 4).
Conversely, if the clockwise rotation of the motor 11 is stopped by opening the switch 3 (step 5), it can be confirmed that the input mechanism of the course start switch 3 and the clockwise rotation output function of the motor 11 are normal.

Next, when the select switch 4 is closed (step 6) and the motor 11 rotates to the left (step 7), and when the switch 4 is opened and the motor 11 stops rotating to the left (step 8), the input function of the select switch 4 is changed. It can be confirmed that the left rotation output function of the motor 11 is normal.

Thereafter, in the same manner, the select switch 5 is closed (step 9), the solenoid 12 is sucked (step 10), the drain valve is opened, and the switch 5 is opened to restore the solenoid 12 (step 11).
The input and output functions of the select switch 5 and solenoid 12 are normal, and then the select switch 6 is closed (step 12) and the water supply valve 13 is opened (step 13).
is closed (step 14), and the water level switch 8 is closed (step 15), and the washing indicator lamp 17 is lit (step 16), and the water level switch 8 is opened and the lamp 17 is turned off (step 17). Also, when the lid switch 9 is closed (step 18), the rinse indicator lamp 18 lights up (step 19), and when the switch 9 is opened, the lamp 18 is turned off (step 19).
20), and when the unbalance switch 10 is further closed (step 21), the dehydration indicator lamp 19 lights up (step 22), and the switch 10 is opened and the lamp 19 goes out (step 23), the select switch 6 is turned off. , the input functions of the water level switch 8, lid switch 9, and imbalance switch 10 are all normal, and at the same time, the water supply valve 13 and the indicator lamps 17 to
It can be confirmed that the output function to 19 is also normal.

In this way, the input and output functions are checked by making the input section correspond to the output section on a one-to-one basis, unlike a normal washing operation.

Note that the correspondence between the input section and the output section is not limited to the embodiment shown in the chart above.
Any combination is possible as long as it is different from the case of normal washing operation.

Further, in order to switch to the test operation process, the operation check changeover switch 7 is used in this embodiment, but any other method may be used as long as it gives the control device 1 an instruction to enter the test operation process. do not have.

〔Effect of the invention〕

As described above, the washing machine test operation control method of the present invention can easily and accurately check input functions and output functions in the test operation process, and does not require the configuration of the operation control device to be complicated. There's nothing to do.

In addition, since the input section and the output section are made to correspond to each other so as to be different from the normal washing operation, double checking can be performed during the normal operation process and the test operation process, and the failure point can be easily and quickly discovered.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing a test operation control method for a washing machine according to the present invention, and FIG. 2 is a configuration diagram of the same. 1... Control device, 3... Course start switch, 4, 5, 6... Select switch, 7... Operation check changeover switch, 8... Water level switch, 9... Lid switch, 10... Unbalance switch , 11... Motor, 12... Solenoid, 13... Water supply valve, 14, 15, 16... Resistor, 17, 18, 19... Display lamp.

Claims (1)

[Claims] 1. In a washing machine in which the order and time of processes such as washing, rinsing, and dehydration can be set in a fixed manner or arbitrarily, an input section that can be manually switched for test operations is provided, and based on the output from the input section, A test operation of a washing machine characterized in that the input and output functions are checked by rearranging the input section and the output section so that the correspondence relationship between the input section and the output section is different from that used during normal washing operation. Control method.