JPH02274288A - Washing machine - Google Patents

Abstract

PURPOSE:To reduce the time taken by setting operation and prevent a setting mistake by providing a control means for automatically switching daytime driving program to night driving program when the circumference is dark. CONSTITUTION:Setting from standard course to silent midnight course can be automatically conducted. For example, when light in a room are extinguished for sleeping, light receiving quantity of CdS 27 is considerably reduced, so that a power source voltage +VCC is inputted to a microcomputer from a light detecting circuit 17, and the microcomputer automatically changes the standard course to the midnight course to execute the set program course. Hence, the time for selecting a key and the time for confirming the set state before operation start can be saved.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a washing machine.

(b) Prior Art As a prior art example, a washing machine that can select daytime and nighttime programs using a selection key was published in Japanese Patent Application Laid-open No. 62-1.
It is shown in Publication No. 81095 (D06F33102).

(c) Problems to be Solved by the Invention In the conventional example, there is a hassle of selecting a key and checking the setting state before starting operation.

The present invention solves such problems in washing machines.

(d) Means to solve the problem The washing machine of the present invention has the following configuration.

A control means for automatically switching the daytime driving program to the nighttime driving program when the daytime driving program and the nighttime driving program are different.

(E) Function: It determines whether it is daytime or nighttime based on the surrounding brightness, and automatically switches to a night driving program when it is determined that it is dark.

(f) Examples Embodiments of the present invention will be described based on the drawings.

Figure 2 shows a microcomputer (1) (hereinafter referred to as microcomputer, for example, LC66506B model manufactured by Sanyo Electric Co., Ltd.)
This is a block diagram of the control mechanism of a washing machine centered on the microcomputer (1), CPU (2), RAM (
3), ROM (4), timer (5), system hash (
6) and input/output ports (7) to (12). The CPU (2) has a control section (13) and a calculation section 14).
The control unit (13) retrieves and executes instructions, and the arithmetic unit (14) extracts and executes instructions from input devices and memory in response to control signals from the control unit (13) during the instruction execution stage. The above-mentioned R performs arithmetic processing such as binary addition, logical operation, increase/decrease, and comparison on the given data.
AM (3) is for storing data to be used in the washing machine, and ROM (4) is for storing the means for operating the washing machine, setting conditions for judgment, and processing various information in advance. It is used to load rules etc. for
For example, various program courses shown in FIG. 3 are stored.

Furthermore, in this embodiment, a late-night course is provided separately from these program courses, and is stored in the same ROM. The contents of this late-night course are based on the standard course as shown in the diagram, but extend the washing and rinsing time (Washing 1).
(2 minutes → 40 minutes, rinsing 2 minutes → 10 minutes), and intermediate dehydration between washing and rinsing and between rinsing and rinsing is omitted.

As a result, the standard course takes about 40 minutes, while the late night course takes about 1 hour and 30 minutes.

Furthermore, in the late-night course, the pause time during the rotation cycle of the rotor during washing and rinsing is set longer than in the standard course. Specifically, while the reversal period in the standard course is 1 second 0N-0.5 seconds OFF, in the late night course it is 1 second 0N-3 seconds OFF.

In other words, since the washing and rinsing times are extended in the midnight cycle, the laundry is soaked in the detergent solution or rinse solution for a longer time, and the washing and rinsing times are extended.
The rinsing effect is promoted. Furthermore, by omitting intermediate dehydration, there is no brake noise or vibration noise during dehydration, and by extending the OFF time of the rotor blade during the washing and rinsing steps, frequent reversals of the rotor blade can be reduced. Therefore, the late-night course is generally quiet and can be run at night without any hesitation.

The input boat (7), (8), and (9') include an input key circuit (15) consisting of various operation setting keys, a detection circuit (16) such as a water level sensor and a top cover safety switch that moves when opening and closing the top cover; Signals from a photodetector circuit (17), etc., which will be described later, are input, and based on this information, the output port (
10) From (11) and (12), an LED drive circuit (18) consisting of a group of LEDs, a buzzer circuit (19) for process end notification or abnormality notification, and a load drive circuit (20) consisting of a bidirectional thyristor, etc. ), etc., a control signal is sent out.

The load drive circuit (20) operates in accordance with a control signal from the microcomputer (1), including a left-right rotation circuit (21)<22) for a rotor drive sweater, a water supply M, and a fuel valve drive path, and (26) a reset signal. This is a generation circuit.

(27) is caused by CdS, and since the amount of light received by the dM17 fan increases as the amount of light received decreases, when the area around the washing machine becomes dark and the voltage V becomes smaller than Vo. , the output V, (+vcC) is input from the operational amplifier (28) to the microcomputer (1). Specifically, 30C1
It was so dark that you couldn't see the letters 21m from a distance of 1 meter.

In FIG. 1, after the power is turned on, the selection operation for each of the program courses is accepted (S-1), and when the standard course is set, the light detection circuit (1
7) is determined (S-2). Here, for example, when the lights in the room are turned off for sleeping, the CdS
Since the amount of light received by (27) decreases considerably, +VCC can be input to the microcomputer (1) from the photodetection circuit (17), so the microcomputer (1) automatically changes this standard course to a midnight course. (S-3) and execute the set program course <S-4).

As described above, in this embodiment, the standard course is automatically set to the quiet late-night course at night. Note that courses other than the standard course are not subject to change because they are set depending on the quality of each item to be washed and the speed and speed of washing. Also, in case you really want to take the standard course, it is advisable to provide a switch that prohibits changing to the late-night course.

(g) Effects of the invention The washing machine of the invention senses the surrounding brightness and
Since the program automatically switches to the night driving program, it is possible to reduce the amount of time and effort required for setting operations, and to prevent setting errors.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing the operation of the washing machine of the present invention;
FIG. 2 is a block circuit diagram of the control mechanism, FIG. 3 is a time chart of each program course, and FIG. 4 is a photodetection circuit diagram. (2)...CPU (control means), (4)...ROM
(Storage means), (17)...Photodetection circuit.

Claims (1)

[Claims] (1) A storage means for storing a daytime driving program and a nighttime driving program; a light detecting means for detecting the brightness around the device body; and a light detecting means for detecting the brightness around the device body; A washing machine characterized by comprising: control means for automatically switching an operating program to a night operating program.