JPS6216794A - 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] (b) Industrial application field The present invention relates to a washing machine.

(B) Conventional technology As a conventional example, a washing machine has a detection means for detecting the water temperature during washing and determining the water temperature rank, and a control means for adjusting the washing time based on a signal from the detection means. , disclosed in Japanese Patent Application Laid-Open No. 55-66394.

That is, the washing time is determined according to the temperature of the washing water.

However, in the dehydration process, for example, the higher the air temperature, the higher the natural drying rate, so the air temperature should be given more importance than the water temperature, and all process controls that depend on the water temperature are good. isn't it.

Additionally, it would be very convenient for the user to know the detected temperature as it would be a guideline for the amount of detergent or finishing agent to be added, but if a display means was provided for each of the various detection means, it would be difficult to understand and the circuit would be It becomes complicated.

(c) Problems to be Solved by the Invention The present invention provides a washing machine with high commercial value and excellent operability.

(d) Means for Solving the Problems The washing machine of the present invention includes an air temperature detection device that detects the air temperature inside the machine, a water temperature detection device that detects the water temperature in the tank, and the temperature detected by each of the detection devices. and a control device that drives the display device based on data given priority among the air temperature data and water temperature data input from each of the detection devices.

(E) Function: When the process is controlled based on water temperature data, the water temperature is displayed, and when the process is controlled based on air temperature data, the air temperature is displayed.

(f) Example Embodiments of the present invention will be described with reference to the drawings.

In the fully automatic washing machine shown in Figure 1, (1) is a temporary frame, (2)
(3) is an outer tank installed inside the machine frame (1), (4) is installed inside the outer tank (3〉), and there are dewatering holes around it. (5) An inner tank serving as a washing and dehydrating tank having..., (6) a rotary blade disposed at the bottom of the inner tank (4), and (7) a drive motor, and connected to the rotary blade (6) via a power transmission mechanism (8),
The rotary blade (6) is rotated during washing, and the inner tank (
4) Both rotor blades (6) can rotate at high speed. (9) is the drainage = 3-port provided at the bottom of the outer tank (3), (10) is the drainage solenoid valve, (11) is the drainage □ hose,
(12) is an air wrap provided at the bottom corner of the outer tank (3), and communicates with a pressure switch (13) in the operating section (2) via a pressure hose (14). (15) is a water supply solenoid valve installed in the water supply channel (16), and (17) is a negative characteristic thermistor as a temperature sensor attached to the bottom of the air trap (12), which detects water temperature when submerged in water. However, when this is not the case, it detects the temperature inside the aircraft.

FIG. 2 shows a group of various light emitting diodes (hereinafter referred to as LEDs) and a group of operation buttons arranged on the front panel (2a) of the operation section (2), where 18> is a washing time setting button;
<20) is the rinsing number setting button, <20) is the dehydration time setting button, <21
> is the water flow intensity setting button, <22) is the selection button for whether to perform water rinsing, (23) is the setting and start of the standard course or a favorite course in which each process time is input manually, (24)
) is the setting and start button for a speedy course that completes the entire process in 23 minutes, and (25) is a stop button for temporary stopping. Each of the various operation buttons corresponds to an LED,
The light turns on and off as appropriate depending on the operation. (26) is a display section of the temperature rank detected by the temperature detection device which will be described later.
(26a), (26b), and (26c) are lit.

FIG. 3 shows a block circuit diagram of the control section, and numeral (27) corresponds to the control device, and is a microcomputer (hereinafter referred to as microcomputer) which is the center of control. The microcomputer (27
) includes an input section (28) consisting of a group of various operation buttons, a safety switch (29) linked to the opening and closing of the top cover, the pressure switch (13) as a water level detection means, a reset circuit 30), and a clock circuit. <31) and the temperature sensor (
Information from a temperature detection device (32) using a morph (17) is input, and based on this information, various display circuits (33) consisting of light emitting diodes and a morph left/right rotation drive circuit (
34) (35), Supply and drainage solenoid valve drive circuit (36) (3
7), the L E D (26a>(26b)(26c
38) and the buzzer circuit 39).

Next, the temperature sensing device (32) will be explained in detail based on FIG. 4.

The resistance value of the thermistor (17) is determined by water wetness (or temperature)
This thermistor (17)
Comparators (40) (41) (42) (
43) for comparison. This comparison output is the microcomputer (2
As shown in Table 1, the microcomputer (27) ranks the water temperature (or air temperature) based on the state of the signals input to each input boat. Determine.

Table 1 The temperature ranks X-D correspond to the temperature rank display circuits (38), and the microcomputer (27) displays the low temperature L E if the determined temperature rank is X or A.
D (26c), if B, medium temperature L E D (26b)
And if it is C or D, the high temperature LED (26a>) is turned on.

The operation will be explained based on this configuration.

First, in the washing step, one of the three steps of 12 minutes of washing, 6 minutes of washing, and 3 steps of washing is executed by the operator's selection effort using the setting button (18). In addition, the execution time of each process is as shown in Table 2.
) The time is automatically changed according to the temperature rank to which the detected water temperature belongs.

Note that water temperature detection is performed immediately after water supply is completed and every two minutes from when the motor (7) is started (however, during the rinsing process, detection is performed only once when the motor is started). In this case, the time may be changed as appropriate depending on the change in temperature rank, or may be controlled based on the first detection result.

Next, in controlling the dehydration process, the microcomputer (
27), first immediately after turning on the power or pressing the stop button (25).
) Temperature detection is performed when the process time is changed after a temporary stop, and the temperature rank at this time is stored as temperature data (in cases other than the above, it is not applied as temperature data). However, if the water level switch (13) is set (
), the standard B rank is stored as temperature data.

Now, in the dehydration step, either one of the three types of dehydration steps of 6 minutes of dehydration, 3 minutes of dehydration, and 1 time of dehydration is executed by the operator's selection operation using the setting button (20). Then, the microcomputer (27) appropriately changes the selected process time as shown in Table 3 based on the temperature data stored in advance. That is, the higher the temperature, the shorter the dehydration time.

The following is general dehydration control, but in the following exceptions, appropriate control will be performed.

In other words, (a> If hot water of 40°C or higher is used as the washing liquid in the washing or rinsing process before the dehydration process (
If the temperature detected by the temperature detection device (32) is rank D), there is a risk that the tank will deform if intense dehydration is performed, so in that case, the temperature data shown in Table 3 is shown regardless of the stored temperature data. Dehydration is performed with a dehydration time based on the temperature rank (■), and the rotational speed is lowered than normal by operating the power control element of the motor clockwise rotation drive circuit (34) intermittently as shown in FIG. Incidentally, in this example, Tz=15 seconds, T2=5 seconds, and the rotation speed was 90Or.
pm (normal) to 60 Orpm.

(b) Generally, in winter or in cold regions, washing machines are often used indoors because there is a risk of freezing at night. At that time, if the room is heated, the temperature inside the room will be as high as in summer, and the dehydration time will be controlled to be shorter than usual (dehydration will be performed at a high temperature rank). However, since laundry is hung outside to dry at a low temperature, if the dehydration rate is weak, it will become more difficult to dry. Therefore, since the tap water used during the water pouring rinsing process (water pouring and overflowing while rinsing) before the dehydration process is close to outdoor temperature,
The microcomputer (27) compares the temperature data with the water temperature data input before the dehydration process, and if the rank of the temperature data is on the higher temperature side, the microcomputer (27) performs a process based on the temperature rank Then dehydrate.

In this embodiment, the water temperature and air temperature ranks are each divided into three levels, and by further classifying them into finer ranks, depending on the rank difference between the air temperature data and the water temperature data,
Even more detailed process control is possible.

Also, during the washing and rinsing processes, if there is a large difference between the water temperature and the air temperature, as mentioned in cases (a> and (b) above), the temperature of the washing water may be lower than the air temperature during washing. Therefore, it is more effective to control the process based on the rank difference between the water temperature rank and the air temperature rank, for example, instead of simply using the water temperature data.

By the way, since the dehydration process is controlled based on air temperature data, there is no need to display water temperature data. Therefore, during this step, the temperature rank display section (26) displays a display based on air temperature data instead of the water temperature display up to that point.This allows the user to correctly recognize the current temperature control state.

Also, during temperature detection, each LE of the display section (26>)
D (26a), (26b), and (26c) change their lighting at 0.5 second intervals to notify the user that detection is in progress.

The above explanation is based on 1.
In the case of the "speedy course" and 1 standard course, the process time is automatically set when each of the start buttons (23) and (24) is operated.

In addition, in this embodiment, even if the user sets the washing time to 12 minutes, the washing may take 14 minutes depending on the water temperature, so the set time may differ from the actual execution time, so the execution time may vary depending on the water temperature. An LED may be separately added to notify that the current value is being changed.

(G) Effects of the Invention The washing machine of the present invention performs process control based on temperature data when the dehydration rate in the dehydration process depends on the air temperature rather than the water temperature. Dehydration can be performed and the commercial value can be increased.

Furthermore, since the common display device displays the water temperature when the process is controlled based on water temperature data, and the air temperature instead of the water temperature when the process is controlled based on air temperature data,
The user can easily understand the current temperature control state, the circuit configuration is also simplified, and a washing machine with high operability can be provided.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the internal mechanism of the main parts of a fully automatic washing machine embodying the present invention, Fig. 2 is a front view of the operating section, Fig. 3 is a block circuit diagram of the control section, and Fig. 4 is the temperature detection device. FIG. 5 is a time chart showing the state of energization of the motor when the inner tank is intermittently rotated. (4) Inner tank, (26) Temperature rank display section (display device), (27> Microcomputer (control device), <32) Temperature detection device (air temperature detection device and water temperature detection device), (38) Temperature rank display circuit (display device). Figure 1

Claims (1)

[Claims] (1) In a washing machine that detects the temperature inside the machine and controls the process based on the detected temperature, an air temperature detection device that detects the temperature inside the machine, a water temperature detection device that detects the water temperature in the tub, and the above-mentioned a common display device for displaying the temperature detected by each of the detection devices; and a control device that drives the display device based on data given priority among the air temperature data and water temperature data input from each of the detection devices; A washing machine characterized by being equipped with.