JPH0552234B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a rinsing control device for an automatic washing machine that can automatically proceed from a washing process to a rinsing process, and can perform water injection rinsing in the rinsing process.

(b) Conventional technology The washing machine disclosed in Japanese Patent Application Laid-open No. 148858/1983 detects the amount of water coming out of the tap by measuring the time until the water supply is complete, and performs water injection and rinsing based on this detection result. The process time of each process is changed to ensure uniform rinsing performance. However, changing the length of the process time also changes the total time required for washing, which results in poor usability for the user.

(c) Problems to be Solved by the Invention The present invention attempts to equalize the water injection rinsing performance regardless of the process time, and also makes it possible to limit water injection in excess of the overflow capacity.

(d) Means for Solving the Problems The present invention provides a water supply capability that detects the water supply capacity of a water supply source in a device that automatically advances from a washing process to a rinsing process, and in which water can be poured into the rinse process. a detection means, a water supply valve for supplying water from the water supply source into the washing tub, a comparison means for comparing the detection output of the water supply capacity detection means with a predetermined value, and a water injection amount for a predetermined water injection rinsing time in a water injection rinsing process. and a water supply valve control means for controlling the water supply valve to be continuously opened or intermittently opened based on the comparison result by the comparison means so that the water supply valve is kept constant.

(E) Effect: If the water supply pressure and volume are not large, the water injection volume is decreased or the water injection time is reduced; if the water supply pressure and volume are not large, the water injection volume is not reduced, or water is continuously injected, and the water supply pressure, volume, etc. are different. Also, the amount of water injected during the rinsing process is made approximately equal.

(F) Example Explaining based on the drawings, 1 is a washing process, 2 is a washing process,
This is a fully automatic washing machine that automatically advances the process in the order of rinsing and dehydration.
A dewatering/washing tub 3 is disposed inside the outer tub 2, and an operating section 4 is provided at the rear of the upper part of the machine. 5 is a rotary blade provided in the washing tub 3, 6... is a dehydration hole,
7 is a drain valve in the drain channel 8; 9 is a motor that intermittently reverses the rotor blade 5 at low speed during washing and rinsing; and rotates each washing tub at high speed during dehydration; 10 is a solenoid that controls the brake for the drain valve 7 and the washing tub. , 11
is a drain hose that extends the drain channel 8.

12 is an overflow port of the outer tank 2, which is connected to the drain hose 11 through a hose. Reference numeral 13 denotes an air trap provided at the bottom of the outer tank 2, which is communicated with a water level switch 14 in the operating section 4 through an air hose 15. 16 is a slide knob that sets the water level switch 14 to four levels: low, low, medium, and high;
It is provided in 17 is a water supply valve that can supply water in excess of the overflow capacity, and city water is supplied from the water supply port 18 to the washing tank 3.
supply within. Reference numeral 19 denotes an operation surface having a start key 20, a stop key 21, a water injection rinse key 22, and various keys 23 for changing time and stroke.

Here, the main structure of the water level switch equipped with the slide knob 16 is shown in Utility Application No. 1982-2452 proposed by the applicant, but in this embodiment, it is shown in FIG. In addition to providing magnets 25, 25 that interlock with the knob 16 and guide 24,
There are reed switches 26, 26 at predetermined positions on the main body side.
has been established. Then, the magnets 25, 25 are activated in correspondence with the reed switches 26, 26 for each water level setting position, or are left inactive without corresponding to the reed switches 26, 26.
6 and 26 are activated and deactivated as shown in FIG.

On the other hand, the process of the fully automatic washing machine according to this embodiment is controlled by a microcomputer (hereinafter referred to as microcomputer) 27, whose control circuit is shown in FIG.

Thus, turn on the power switch, set the water level switch 14 to the specified water level, and press key 2 to rinse water.
2 and operate the start key 20. The microcomputer 27 memorizes the set water level depending on whether the reed switches 26 and 26 are activated or not, and first
Open 7. Then, when water supply starts, this time is measured using a built-in counter or the like. When water is supplied to the set water level, the water level switch 14 is tripped (ON), and the microcomputer 27 stores the measured time (T) up to this point. on the other hand,
When the water level switch 14 trips, the microcomputer 2
7 intermittently rotates the motor 9 at low speed and for short periods of time to perform the washing operation at a preset time. When washing is completed, the microcomputer 27 opens the drain valve 7 using the solenoid 10, and when the water level switch 14 is reset (OFF), the motor 9 is turned off.
As a result, the washing tub 3 is rotated at high speed together with the rotary blade 5 to perform so-called intermediate dehydration.

Next, the microcomputer 27 opens the water supply valve 17 again for the rinsing operation, but first determines the set water level for this rinsing operation. If it is "high", it is determined whether the previous measurement time (T) is less than 120 seconds, and if it is "medium", it is determined whether or not T is less than 100 seconds.
If so, it is determined whether (T) is less than 90 seconds, and if it is a "small amount", it is determined whether (T) is less than 80 seconds. If the water supply pressure etc. is not sufficient and the time T is not less than the above-mentioned predetermined value, the water supply valve 17 will be opened continuously during the following two water injection rinsing operations, and water will be injected intermittently. . On the other hand, if the time T is less than the above predetermined value, that is, if it is possible to quickly supply water to the predetermined amount or more than the predetermined value, the water supply valve 17 should not be opened for 10 seconds during the following two water injection rinsing operations. It is set to an intermittent open state in which it closes for seconds.

Therefore, during water injection and rinsing work, the amount of water injected is uniformly adjusted within a predetermined limit according to the water supply pressure, etc., so that water does not exceed the overflow capacity and leak outside the outer tank 2, and the rinsing condition does not exceed the water supply level. It will not change due to water pressure etc.

In addition, a semiconductor pressure sensor can be used as a means for detecting the water supply pressure, amount, etc. of the water supply source, and the water injection at the water supply valve 17 can be adjusted by gradually or continuously restricting the water supply. You can also do it. Furthermore, the time T may be determined to be shorter and the opening/closing time of the water supply valve 17 may be set to be shorter.

(g) Effects of the Invention According to the present invention, the amount of water to be poured during rinsing can be adjusted in response to changes in the water supply source, and the rinsing condition in the rinsing by water can be made substantially uniform, and unnecessary Water leakage can be prevented.

Furthermore, since the amount of water injected is adjusted in response to changes in the water supply source, and the rinsing time is not adjusted, there is no need to change the length of the rinsing time, and the total time required for washing is simplified. It is possible to provide a washing machine that is easy to understand and use.

[Brief explanation of the drawing]

Fig. 1 is a control circuit diagram of the present invention, Fig. 2 is a flowchart explaining the control operation, Fig. 3 is a sectional view of a fully automatic washing machine, Fig. 4 is a side view of the water level switch,
FIG. 5 is a diagram showing the operating state of the reed switch with respect to the set water level. 3...Dehydration/washing tub, 14...Water level switch,
17... Water supply valve, 26... Reed switch, 22
...Water injection rinse key, 27...Microcomputer.

Claims (1)

[Claims] 1 Automatically progresses from the washing process to the rinsing process,
In the rinsing process, in the case where water injection is possible, the water supply capacity detection means detects the water supply capacity of the water supply source, the water supply valve supplies water from the water supply source into the washing tub, and the water supply capacity detection means detects the water supply capacity of the water supply source. A comparison means for comparing the detection output with a predetermined value, and based on the comparison result by the comparison means so that the water injection amount for the predetermined water injection rinsing time of the water injection rinsing process is constant,
A rinsing control device for an automatic washing machine, comprising a water supply valve control means for controlling the water supply valve to be opened continuously or intermittently.