JPS6266891A - Washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an frJ-machine that performs fr:, +111t- while supplying steam and maintaining a set water temperature.

(b) Conventional technology An example of this one type washer is shown in Japanese Patent Application Laid-Open No. 59-57988. The water temperature is detected by a thermistor and the set water temperature is maintained by opening and closing a steam valve. . and,
If the water temperature rises by 10°C or more above the set value, this will be detected and displayed as an abnormality.

However, if this thermistor or its peripheral circuits, for example, has an open failure and becomes unable to handle the temperature (the output corresponds to 0°C to 2°C), steam may continue to be supplied, causing an accident of abnormally heating the clothes. Furthermore, if you do a lot of laundry work with the main valve of the black gL source closed, there will be no heating accident, but you will not be able to wash your clothes satisfactorily.

Problems to be Solved by the Invention The present invention prevents overheating due to tampering with the temperature detection means, and also achieves the following:1. ＠It is something that supplies Qi to Keio.

B) Means for solving the problem The present invention provides means for receiving a temperature detection signal and comparing the initial water temperature and the measured water temperature after the steam valve is opened according to the time after the valve is opened;
If the measured water temperature does not rise more than a predetermined value from the initial water temperature for this time based on the result, the valve is closed and an abnormality i-notification means is provided.

(e) Effect Therefore, if there is a failure in the electrical output system of the temperature detection means, the measured water temperature will not rise, and this can be known, and the steam can be stopped to prevent unexpected accidents from occurring. suppress. Furthermore, if the electrical output system is normal and the measured water temperature does not rise, this indicates that the main valve for the vaporizer is not open.

(f) Example Figure 6 is an internal mechanism diagram of a drum-type fully automatic washing machine.
The figure is an explanatory diagram of the layout centered on the outer tank. (1) is the outer tank that is elastically housed inside the main body (2) by a spring, etc., and inside is a horizontal shaft-type rotating drum (3). When you install PcK, the outer lower part is II that supports three-phase 200v! A washing motor (4) and a dewatering motor (5) are installed as guide motors, and these motors 141! 51 and a pulley belt to rotate the rotating drum (3). Here, the washing motor 4) rotates the rotating drum (3) at a low speed (approximately 45 r,
pm) or balance (approximately 9 Or, p, m).
) is weak (approximately 425 r,p,m) or strong (approximately 85
Rotate in one direction with Or, pm). This speed change is performed by switching between Δ, connection and λ, connection.

(6) is a water supply source, which includes a small-diameter detergent input channel (9) connected to the outer tank (1) via a detergent input valve (7) and a detergent cup (8), and a softer, etc. Auxiliary agent injection valve I11
and a small-diameter auxiliary agent inlet port connected via the auxiliary agent cup u1), and a large-diameter water supply channel I connected via the water supply valve U.
and are mutually parallel K([,.

tJ'J is the hot water source (boiler, etc.), and the hot water valve (16
) to the outer tank (1).

α is a steam source with source & (not shown).

It is connected to the lower part of the outer tank (1) via a steam valve uet-, and a pressure switch a9 that is turned on by the pressure when steam is supplied is connected downstream of the valve in this connection path.

□ is the glue injection path where the ejection power of the steam source 0η is input into the ejector (2), and the glue is sucked up from the glue-filled pagtsu @ via the flexible hose □□□ and sent to the outer tank (1). A glue injection valve @ is inserted.

Note that the water source (to) is not particularly necessary if the steam source Uη is present. In addition, if there is no steam muη, a pump (c) is separately connected to the glue input path (3) to serve as an input source.

(To) is a drainage channel connected to the lowest part of the outer tank (1), and a drainage valve ■ is inserted after branching off from the air trap @. Step 1 - Connect e, lii to the trap via a pressure hose.
Switch ■ (316υ6 sides are connected, these switches are very low (1/10 of the outer tank radius), medium low (same i/10), medium high (same (5/10)), high (same ( 7/
10) Detects the liquid level and assists.

(to) is a temperature sensing element consisting of a thermistor or the like that horizontally controls the temperature of the water, etc. in the outer tank (1) and outputs a detection signal.

(B) is a j & front switch fixed to the main body (2), and the operation ring (to) is inserted into the inverted U-shaped detection ring A (to) fixed to the outer tank (1).

Figure 1 shows a microcomputer (hereinafter referred to as microcomputer) 13 as a process control means for this drum-type self-contained washing machine.
71, 4 is a first and second person output interface.

Ne is a display device connected to the WIJ single output/output interface, and as shown in FIG. "Cold water", "Hot water", "Auxiliary agent", "Glue", "Low rotation", "Low", "Medium low", "Medium high", "High"
, Indicator lights (using display tube segments) that light up corresponding to each status such as "Drain only" (43..., "Pre-wash", "Wash", "Rinse 1", "Rinse 2") , "Rinse 6", "Rinse 4", and (Dehydration) light emitting diodes (hereinafter referred to as LEDs) 44 corresponding to a series of representative steps.
It is equipped with...

value! 311'i A D/A converter that converts the digital signal for temperature setting from the first person output interface diagram into a voltage. , let the temperature be measured.And this field,
C dark? - One type constitutes a temperature detection means.

14n is a 6 x 4 matrix type keyboard that is read directly to the first person output interface (to), and as shown in the 6th factor, there are number keys (4 咎...), "time", "temperature" , "cold water level", "warm water level", "auxiliary agent", "glue", "
It is equipped with function keys (49...) of ``strength/weakness'', ``ejection'', ``program'', ``call'', ``write'', ``fast forward'', and ``start/stop''.

Note that the first person output interface (to) has a built-in timer and two-way RAM configured by Kakuntai. At the end of this interface, there is a start signal that tells the user whether to start the time kakunto with the water level signal or with both the water level and M degree signals, a signal that tells whether the steam source Uη is present or not, and a signal that tells the user whether to start the time kakunto with the water level signal or with both the water level and M degree signals, and the input of glue. A signal that tells you whether to do it yourself or with help, and a signal that tells you whether to do the so-called Cool Dakun, which is mixing water and lowering the temperature to prevent wrinkles when the temperature of FC14M water is 50 degrees Celsius or higher, is necessary. is input.

2nd person output interface GIKii, above pressure switch (11, each liquid level switch c9cnC3υ64, shaking crocodile switch (to), safety side (to) when motor overheats) /L/switch (5G, rotating drum (3) ) door switch No. 0 respectively. Then, this @2 person output ink face (to) is the washing motor control circuit that rotates the washing motor 14) at low speed in reverse or backward rotation ← and the dewatering motor (5). ), the dehydration motor control circuit (dK ratio output) that rotates the spindle for weak dehydration or strong dehydration, the blower motor (b) of the fan that cools each motor 14) (5), the water supply valve (to), and the detergent injection. Valve (7), auxiliary agent injection valve 1G
, the steam valve (8), the drain valve (to), the a water valve ubl, and the glue input valve @, respectively, and outputs an opening/closing signal, and further outputs a termination signal or an abnormality signal to the buzzer t4.

When executing the operation program "P15" alternatively shown in FIG. 7, first press the "Program" key 4 and then press "15" with the numeric key (C). Then, the hour 1ffi display tube A
I) displays "P" and temperature display 11 + old displays "15".Here, press the "Call" key (41), or press the "Start/Stop" key "4", or press the "Call" key (to ) and then press the "Start/Stop" key 14
When you press 1, among the LEDs (44) for displaying the process,
In "P15", which corresponds to the set process, all the LEDs (goods) are turned on, and the first "prewash" LED (44) flashes. While the process is in progress, the LEDs corresponding to the process in progress flash sequentially. "Fast forward"
Each time the key (To) is pressed, the stroke progresses, and the corresponding stroke (
Immediately end the process in which the LED is flashing. This fast forwarding can be executed with the stroke temporarily stopped while the stroke is actually in progress.

After falsely displaying rP 15J on the display tube, "Start/
If you press the "Stop" key (49) or after pressing the "Call" key (C), the process of rP 15J will be executed, and during execution, press the "Start/Stop" key (41).
Press to stop the process, press again to restart. This operation program first starts with the "prewash" process, but the time display tube! 4m) and warm I! The L display tube U displays the actual time and water temperature of the "pre-wash" process, and each indicator light Q3... displays the water temperature. A similar display will be made in each of the following steps.

In this operation program, after water has been supplied to a predetermined level in each of the steps of "prewash", "exercising", and "rinsing 1", steam is added to heat the water to a set temperature, and the heating is maintained during the execution of the steps. That is, the microcomputer controls the opening and closing of the steam valve (10) based on the temperature detection signal from the temperature detection element (10) and the like.

The microcomputer (b) stores the set water temperature (ts), stores in advance the initial water temperature (t2) measured by the temperature detection element (t2), etc., and further stores the measured temperature during heating (t2.
+ and the set temperature (ts) are constantly softened. steam valve t
If the measured temperature (t2) becomes 10°C or more higher than the set temperature (ts) even though tS is closed, the steam valve u1
9 is open even though it is an open command, that is, an open failure is detected, and a signal indicating an abnormal temperature is output to the display device 1O and the buzzer knee. This results in temperature display! w0 displays a temperature abnormality display, for example "E9", and the buzzer ring rings at a volume and cycle sufficient to notify of the abnormality.

Also, when the steam valve (to) opens, the pressure switch u1
is input to the microcontroller c17) using ONL each time, so
The microcomputer (b) can determine the opening failure of the steam valve α port by turning on the pressure switch uI, which controls the closing of the steam valve α mark. Therefore, microcontroller C3
7) also stopped operation, and the temperature display tube (company) showed E9.
” is displayed, and the budde sakaki makes a loud noise. Since the operation of the pressure switch ul is delayed due to the cutting pressure in the connection path, the microcomputer After about 1 to 6 seconds, the pressure switch (to) is detected to be ON and the above work is performed.In addition, the microcomputer CI?) keeps the steam valve (to) closed, that is,
Even in other processes that do not involve heating work, this valve opening failure is investigated by operating the pressure switch uiii.

Microcontroller 6 by detecting a praying failure? ) #i, At the same time as the failure display and alarm, open the detergent injection valve (7) and open the outer tank (1).
) Continue to supply water with a small amount of internal pressure to prevent further increase in sensitivity.

Then, the main valve (not shown) for the steam guη is closed. Abnormality notifications, displays, and water supply can be stopped by operating the "Start/Stop" key (to).

When the praying operation block rim ends with "dehydration" at the end, the microcomputer G7] activates the buzzer **'i. In this case, the buzzer sound is of normal volume and cycle, and is A when abnormal.

In addition, in case of an abnormality, instead of the detergent injection valve 17)K, the water supply valve (to)
It is a good idea to open it up.

On the other hand, microcomputer C supplies water and when the steam valve (1 rise) opens,
For example, the kakunta measures time for 5 minutes, and the measured temperature (tl) changes to the set temperature (ts) in the same way as above.
If not, the measured temperature (tl) will be the initial temperature (tl) +
Compare and judge whether the temperature exceeds 5°C. In the relative soft result (tl
) exceeds the prayed d&, steam is supplied normally (
The main valve was also opened (2), and the electric output A line of the temperature detection manual blower was determined to be normal, and from then on, the valve (Ill) was opened and closed to maintain the set sensitivity (ts). However, If the temperature (tl) does not rise after 50 minutes, this could be due to a malfunction in the electrical output system of the temperature detection means, which is only outputting between 0°C and 2°C, or because you forgot to open the main valve. At any rate, the valve U is closed to stop heating, a failure message E7'' is displayed on the temperature display tube (6), and the buzzer is activated with an abnormal sound.

This abnormality notification and poor display cannot be canceled unless the K "start/stop" key is operated, as described above.

In this example, the specified temperature was set to the initial water temperature (tl) + 5° C. for 5 minutes after the valve ul was opened, but the specified temperature may be determined by setting the time to 6 minutes or 2 minutes and lowering the specified temperature.

(G) Effects of the Invention According to the present invention, it is possible to deal with failures in the electrical output system of the temperature detection means and forgetting to open the main valve of the steam source, thereby preventing damage to clothing due to heating, unsatisfactory fr, and lost wages. It can prevent
It is possible to provide the #1 machine in an extremely safe and practical situation.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the e#J washing machine according to the present invention, Fig. 2 is a flowchart, Fig. 3 is an internal mechanism diagram, Fig. 4 is an explanatory diagram of piping, Fig. 5 is an explanatory diagram of the display device, and Fig. 6 is an explanatory diagram of the display device. The figure is a key layout diagram of the keyboard, and FIG. 7 is an operation program diagram. (1)...Outer tank (washing tub), ■...Water valve, (to)
・・・Steam valve, (to)...laK inspection horizontal use%07)・
...Microcomputer (process control means), book...display device, ←
Groan...buzzer.

Claims (1)

[Claims] (1) A means for supplying water to the washing tub up to a predetermined water level, a steam valve that supplies steam to maintain the washing water at a predetermined water level at a set temperature, and a means for constantly measuring the temperature of the washing water in the washing tub and adjusting the voltage. A temperature detection means for converting and outputting the data; a means for receiving the temperature detection signal and comparing the initial water temperature and the measured water temperature after the steam valve is opened according to the time after the steam valve is opened; A washing machine comprising stroke control means for closing the steam valve and operating means for notifying an abnormality when a corresponding temperature has not been reached.