JPS62192196A - 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] (1) Industrial Application Field The present invention detects the water temperature of the monastery using a temperature sensor,
Based on the detection result, the washing operation kF+;IJ is performed on the washing machine A.

(1) Conventional technology It is well known that the water temperature in the tank is related to the degree of cleanliness.
Japanese Unexamined Patent Application Publication No. 55-66394 discloses a system that automatically changes the music at the time of washing and d for each rank.

However, in this case, the detected temperature varies depending on the mounting position of the temperature Nl-sensor, and there is a time difference of t between the city water and the remaining hot water in the bath.
When I put cold 7N into the washer that was placed in the heated room, I measured only the initial water temperature (+--, but it cannot be said to be an accurate 7N temperature, The temperature control function could not be fully performed.

Problems to be Solved by the Invention The present invention attempts to ensure that the control function is performed by checking the water temperature at tEIa.

2) Means to solve the problem The solution for one misfire is to set a timer after one rotor drive (
1 counted by this timer and measured by this timer.
The temperature number 1u from the temperature sacer is processed by the control means at the time of the song, and the control means is equipped with a comparison section that compares the temperature r\ signal at that time with the previous 7M degree signal.

This configuration is provided with an IPI section that corrects the I+I specifications of the wash 1 operation based on the comparison results.

In addition to the comparison section and the correction section, the control means includes an updating section that updates the previous temperature signal to the next temperature signal every time a plurality of cycles are made.

A in the modification section has a configuration in which a regulation section is provided to regulate the regular hours within a certain range.

The temperature sensor detects the water temperature and outputs the temperature (from No. 3, the temperature of the tiger whose first rotor is driven for a certain period of time is sampled, and this signal is processed by the control means. In other words, the temperature of the remaining water in the bath is Even if there is an initial change in water temperature due to the addition of hot water, etc.
The water temperature is averaged by driving the rotor blades for a certain period of time, and the temperature signal of this averaged water temperature is used for control.

In addition, by repeating sampling and measuring changes in water temperature over time, we increase the temperature by 11' (r), update the previous temperature signal 1 to be compared to this temperature signal, and perform temperature measurement closer to the current temperature. Furthermore, in order to prevent the time from ending due to too much correction due to sensor failure, etc., the time for correction is regulated within a certain range.

(F) Embodiment First, an example of a fully automatic washing machine that automatically proceeds from water supply to 洢累鯛芈stroke after a start operation will be described.

In Figure 2, (1) is the machine frame, (2) is the outer tank installed in the machine frame (1), and (3) is the outer tank (2) with dewatering holes ( 4) is a dehydration/washing tank, (5) is a liquid balance channel), (6) is a rotary blade installed at the bottom of a washing machine (31), and (7) is a drive motor. , a power transmission mechanism (81k j
When washing, the rotor blades (6) are rotated alternately with pauses in between, and during dewatering, the wash (U tank (3) and rotor blades (6) are both rotated at high speed. (9) Outside (I4
2) Exhaust port provided at the bottom.

(101 is a drain valve, and uII is a drain solenoid. By driving this, the drain valve (101) is opened and closed, and when the valve is closed, a brake is applied to the washing tub (3), and when the valve is opened, the brake is released. u7: J is the top lid that opens and closes when putting in clothes.

(1; 9 is the water supply channel leading to the water supply.

+141 is an air trap installed at the bottom corner of the outer tank (2), which is connected to the pressure switch g and surface detection pressure switch tte through the pressure hose (19), and its bottom stopper (171 is made of a thermistor). A temperature sensor qsha is installed.

Figure '$3 is an enlarged view of the air trap G4 and bottom plug. Air trap I and outer tank (2) have a communication port tl! Je
It is designed so that the washing liquid can go in and out through the bottom plug (1
Water temperature can be detected by a temperature sensor Q□□□ installed in 71.

Figure 4 shows the various light emitting diodes arranged on the front panel (
Hereinafter referred to as LgD) group and operation button group, rA is a washing open setting button, and J is a rinse number setting button.

1221 is the dewatering time setting da1], @ is the water flow intensity setting ω1
1. En is the selection fee for whether or not to rinse with water, the vessel is the setting and start button for the standard course or optional loin where you manually enter the time for each process, and I261 is the setting and start button for the speedy course, which takes 25 minutes for the entire process. The start button 120 is a stop button for temporary stop. Each of these raccoon operation buttons has an LED corresponding to the ISL, which turns on and off as appropriate depending on the operation. +281 is the display part of the III yen rank detected by the l rust ship detection device described later, and LF, D (28a), (281) correspond to the display of low temperature, medium temperature, and high temperature, respectively.
), (28e)75(,'5JTf le.

Figure 1 shows the control contents, and (29) corresponds to the control means and is a microcomputer (hereinafter referred to as microcomputer) which is the center of control. This microcomputer (29) has
An input section (30) consisting of the above-mentioned various operation button groups, and a top lid safety switch (31) that is linked to the opening and closing of the above-mentioned top lid (12).
, information from the pressure switch (16) as water level detection means, the reset circuit (32), the interrupt circuit (33), and the temperature detection circuit (54) using the temperature sensor (18) is input, and these Based on the information, various display circuits (35) are composed of the above-mentioned LED groups.

Left and right rotation separation circuit of the above drive uj mork (7) C'=G)
Oη, water supply solenoid valve drive circuit C threat, above exhaust 71 (drive circuit of solenoid aυ -, above LgD<z8h), (28b
), <(28Q), the temperature rank display circuit Q& and the buzzer drive circuit (1) are controlled.

Next, based on the fifth factor, the temperature detection circuit (goods) described above is
explain. 7j, Degree sensor 081 is a negative characteristic thermistor, and this resistance value changes depending on the water temperature.The voltage determined by the resistance value of this thermistor l and the voltage divided by various resistors are connected to a comparator. (
41a ) (41'l) ) (41C) for comparison. This comparative high strength is the input capo of the microcomputer C91) Pl
, P2. The microcomputer head determines the rank of the water temperature based on the curve shown in the table below and the state of the signal input to each input boat.

The temperature ranks X to C in this table correspond to the temperature rank display circuits □□□, respectively, and the temperature rank determined by the microcomputer is 1, or if it is a human, the low temperature LgD(28&)i
If it is B, the medium temperature LED (28111) is lit, and if it is O, the high temperature LED (28Q) is lit. Next, the operation will be explained based on FIG. First, start button warm 2
When 61 is operated.

Start with water supply operation. There is an artificially large amount of leftover hot water in the bath.
Level pressure switch Qbl is 0 unless supplied to
At FFI, the water supply solenoid valve is opened (ON) by the drive circuit (to) and city water is supplied from the water supply channel α3. When the υ liquid level pressure switch αe is turned ON due to the progress of water supply, the water supply solenoid valve is closed (OFF).

The operating time of each stroke is initially set by operating each button, but when the start button is pressed, the time of each stroke is fixed in advance.

When the water supply is completed, the temperature detection circuit C34) K and υ water temperature are measured by rank, and the above set time is initially corrected when the measured water temperature rank is A or O.

For example, if it is an A rank, the time will be extended, and if it is an O rank, the time will be shortened. In this way, the initial driving time was determined,
The measured water temperature rank at that time is stored as the previously output temperature signal.

At this point, the washing operation proceeds, and the nine kakunta built into the microcomputer t2'1m or the external counter counts the temperature measurement time every two minutes as a timer. That is, 1
Rotation @ (61 is intermittently reversed to wash the laundry and stir the water in the tub, releasing the heat from the laundry and the tub into the water to average the water temperature, and inside this, the temperature detection circuit (b) The microcomputer 1 inputs a temperature signal based on the water temperature every two minutes.Microcomputer 1:!91 has a counter to regulate the time correction range.

It is determined for each measurement whether the content of this counter is a predetermined value of 1, for example 4, and if it is 4 or more, the previously output mouth temperature signal is simply updated with the new temperature signal output from the current measurement. Do not perform 0-hour work. If the counter content is up to 3, subtract the old 'gr's On Ichisenura issue for comparison),
Detects changes in water temperature rank. If there is no change, the temperature signal is updated to the car.

If the water temperature or rank is changing in the direction of decreasing water temperature, the specified operating time is extended, and if the water temperature is changing in the direction of increasing water temperature, the operating time is adjusted to shorten. For example, a 1 rung change will increase or decrease by 1 minute and add 2-y.
L, d increase/decrease by 2 minutes due to change in timing.

Alternatively, if there is a change in rank, the time is increased or decreased by 1 minute for each measurement. After such time adjustment LE, the contents of the regulation kakunta are incremented by 1 and the temperature signal is updated.

This water temperature rank measurement composition is executed until the increased or decreased operating time ends. Therefore, the driving time for the entire journey is 23
For example, if the washing operation time is extended, even if the operating time of each stroke is fixed in advance, 23 minutes.
The entire process may not be completed in minutes.

Next, consider the time when hot water (such as leftover hot water from a bath) is added, which is the biggest cause of water temperature changes.

This is often the case when users want to wash items with a high degree of cleanliness. Therefore, based on the seventh factor, Example 1 will be explained based on the seventh factor, in which the operating time is extended (increased) to ensure cleanliness only when the water temperature rank changes in the direction of decreasing water temperature. In this case, compared to the previous embodiment, there is a change in the time correction section (time correction program) of the microcomputer f291. That is, when the old and new temperature signals are compared and the water temperature changes in a downward direction, the operating time is extended by 1 minute by C. Then, the temperature signal is updated. When there is a change in the upward direction, the time is corrected when there is no change.

Each update operation is not executed. The regulating kakunta completes the time correction operation within the maximum extension time in the downward direction (for example, 4 minutes). In this way, the degree of cleaning is ensured by extending the operating time.

As another embodiment, the number of times (period) of rotation of the rotary blade + 61 is determined by the number of times (period) that the kakunta (timer) opens at the time of measurement.
It is conceivable that the measurement timing be determined when the rotary blade (6) (each motor drive circuit c++ics'rI) is OFF'. In the latter case, since the water flow is small, there is an effect that variations in measured temperature can be reduced.

Also, the water temperature itself may be measured and similar control may be performed, instead of classifying the water temperature by rank, and control pair 3 and rotor blade (6)
It is also possible to use the rotation period and rest period, that is, the reversal period.

In addition, the × rank in Table 1 indicates that the temperature sensor → b-a81 is not detecting the temperature. I understand.

(G) Effects of the Invention According to the present invention, it is possible to provide an extremely high-performance washing machine that can detect accurate water temperature and automatically set each time appropriately in accordance with various usage conditions and environments; It is something.

[Brief explanation of drawings]

? The diagram shows the control of the center washer according to the present invention [jl diagram,
Figure 2 is a sectional view of the old surface, and Figure 3 is an enlarged sectional view of the main part. Fig. 4 is a top view of the front pile, Fig. 5 is a circuit diagram showing the connection between the temperature detection circuit and the microcomputer, Fig. 6 is a brooch yard for explaining the operation, and Fig. 7 1 is another embodiment. 3 is a flowchart for explaining the operation of FIG. (3)...port wash tank, (6)...rotor blade, bet...temperature sensor. ...Microcomputer (control means), C (f; IG motor)
...Motor p, ij movement circuit.

Claims (3)

[Claims] (1) In a device in which the drive circuit of the rotary blades provided in the washing tub is controlled by a control means to execute washing for a predetermined operating time, the temperature of the water in the washing tub is detected. The control means includes a temperature sensor that outputs a temperature signal to the control means, and a timer that counts temperature measurement time during the operation time, A washing machine characterized by being provided with a comparison section that detects a change in water temperature by comparing temperature signals, and a time correction section that corrects the operating time or the drive time of the rotor blade in response to the change in water temperature. (2) In a device in which the drive circuit of the rotary blades provided in the washing tub is controlled by a control means to execute washing for a predetermined operating time, the temperature of the water in the washing tub is detected. The control means includes a temperature sensor that outputs a temperature signal to the control means, and a timer that counts the temperature measurement time a plurality of times during the operation time, and the control means outputs the previously output temperature signal and the temperature measurement time. a comparison section that detects a change in water temperature by comparing the temperature signals output from the above, a time correction section that corrects the operation time or the drive time of the rotor blade in response to the change in water temperature, and the temperature signal output earlier. 1. A washing machine comprising: an updating section that updates the temperature signal to a temperature signal that is output later; and a regulating section that regulates the time for correction by the time correcting section within a predetermined range. (3) The time correction unit corrects each time to extend each time only when the comparison unit detects a change in water temperature in the direction of a decrease in water temperature. washing machine.