JPH0435685A - Fully automatic washing machine - Google Patents

Abstract

PURPOSE:To prevent the washing from wrinkling by detecting the quantity of clothes even in a draining process after washing or rinsing has been over, and thereby controlling operating time for a final dehydration process. CONSTITUTION:When it is detected by a water level detecting means 1 and a water level judging means 4 in a draining process after washing has been over that water is drained down to the specified low level where the quantity of clothes has been detected before washing, a drain valve 14 is closed, an agitating vaned disc 12 is rotated for the specified period of time, and the quantity of clothes is detected by a cloth quantity detecting means 6 and a cloth quantity judging means 7. Water within a washing and dehydrating tank 2 is entirely drained, and it is also dehydrated by a washing and dehydrating tank drive means 15. After dehydration is over, water is supplied and rinsing is performed with the agitating vaned disc 12 operated. After rinsing is over, water is then drained again, and after draining is over, a final dehydration is performed. Operating time for the final dehydration shall be set at one suitable for the quality of clothes based on the difference between the quantities of clothes before and after washing. By this constitution, it is possible to prevent the washing from wrinkling.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fully automatic washing machine used primarily for washing clothes at home.

Conventional technology In the case of a device that detects the amount of laundry put into a washing/spin-drying tank and controls each process of washing, rinsing, and spin-drying, in the water supply process before the washing process, The water supply is stopped when the water level is low, and the amount of laundry is detected by rotating the stirring blades installed at the inner bottom of the washing and dehydrating tank and detecting the load on the motor. Based on the amount of cloth detected before the washing process, the fully automatic washing machine is operated by controlling the water level, water flow, operating time, etc. for all subsequent processes.

Problems to be Solved by the Invention However, with the above-mentioned conventional configuration, the amount of laundry can be detected, but the quality of the laundry cannot be detected. If so, they are controlled in the same way. Generally, the running time of the final dewatering process is determined based on the quality of cotton based on the dewatering performance, and synthetic fibers have the problem that they tend to wrinkle because the dehydration time is too long. Ta. The purpose of this defense is to solve the above-mentioned problems and to provide a fully automatic washing machine that can prevent laundry from wrinkling by selecting the operating time of the final dehydration process that suits the fabric quality.

Means for Solving the Problems To achieve this object, the fully automatic washing machine W1 of the present invention has the following features:
There is a configuration in which the amount of cloth is detected even in the draining process after washing or rinsing is completed, and the operating time of the final dewatering process is controlled.

Function: With this configuration, the fabric quality of the laundry can be determined based on the difference in water permeability of the laundry before the washing process and after the washing or rinsing process.

EXAMPLE A first example of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a water level detection means 1 provided in a pipe 3 communicating with the washing and dehydrating tub 2 detects the water level in the washing and dehydrating tub 2 at stages A to D. Water level determination means 4
Then, the output of the water level detection means 1 and the output of the storage means 6 are input. At a low water level, the cloth amount detection means 6 detects the amount of laundry in the washing and dehydration tank 2 by rotating the agitator [12] installed at the inner bottom of the washing and dehydrating tank and detecting the load on the motor. Detect. The output of the cloth amount detection means 6 and the output of the storage means 6 are input to the cloth amount detection means 7. Note that the storage means 6 stores data regarding the water level, data for determining the amount of cloth at a predetermined amount of cloth, and the like. The outputs of the water level determining means 4 and the amount determining means 7 are also input to the 14m means 8. The control means 8 controls the water supply valve drive means 9 to open and close the water supply valve 10, and controls the inflow of water into the washing and dehydration tank 2, and also controls the stirring blade drive means 11 to perform both washing and dehydration. The stirring blade 12 at the inner bottom of the dehydration tank 2 is rotated or stopped. Further, the control means 8 controls the drain valve driving means 13 and also opens and closes the drain valve 14.

The operation of the fully automatic washing machine configured as described above will be described below. As shown in the second section, the water supply valve 1o is opened by the control means 8 to supply "water supply 1" into the washing and dehydration tank 2.
Then, when the water level determining means 4 inputting the output of the water level detecting means 1 outputs an output indicating that the water level has reached a predetermined level, the water supply valve 1o is closed via the water supply valve driving means 9, and the stirring blade 1 is operated for a predetermined period of time.
Rotate 2. The cloth amount detection means 6 and cloth amount discrimination means 7 perform washing and dehydration! ``Detection of placement 1'' of laundry in 2
Then, based on the water level and the amount of cloth, the water supply valve 1o is opened via the water supply valve driving means 9 to the appropriate water level, and the "water supply 2" is started.
do. Thereafter, the stirrer blade 12 is rotated by the stirring drive means 11 to perform "washing".

When the washing is completed, the drain valve 14 is opened via the drain valve driving means 13, and the water in the washing and dewatering tank 2 is drained 1. In this draining process, when the water level detecting means 1 and the water level determining means 4 detect that the water has been drained to a predetermined low water level at which the amount of cloth has been detected before starting washing, the drain valve 1
Close 4.

Then, the stirring blade 12 is rotated again for a predetermined period of time, and "cloth amount detection 2" is performed by the cloth amount detecting means 6 and the cloth amount determining means 7. Thereafter, all the water in the washing and dehydrating tank 2 is drained 2, and the process moves to the next step of dewatering, where the washing and dehydrating tank driving means 16 dehydrates the water. After spin-drying is complete, open water supply valve 1o and select "Water supply 3"
Then, the stirring blade 12 is rotated to perform "rinsing".

When the rinsing is completed, "draining 3" is performed, and when the drainage is completed, "final dewatering" is performed by the washing/dehydrating tank driving means 16 to complete the entire series of steps. The operating time of the final dewatering step is determined to be an operating time suitable for the fabric quality based on the difference between the amount of cloth before washing and the amount of cloth after washing.

The reason why there is a difference between the amount of cloth before washing and the amount of cloth after washing by the cloth amount detection means 6 is that when detecting the amount of cloth before washing, even if the stirring blade 12 is rotated with water supplied to a low water level, the cloth is made of chemical fibers. In some cases, the water does not penetrate sufficiently into the laundry and floats on the water surface, resulting in insufficient load on the stirring blades 12, resulting in a low placement.

On the other hand, when detecting the amount of cloth after washing, even if the fabric is made of synthetic fibers, the water penetrates sufficiently, so it sinks instead of rising above the water surface, and the agitation H12 is sufficiently loaded to detect the appropriate amount of cloth. .

The difference in the amount of laundry before and after washing is large when the fabric is made of synthetic fibers, so if it is known that there is a difference of more than a specified amount between the two, the fabric of the laundry is made of synthetic fibers. It is determined that

As described above, according to this embodiment, the amount of cloth is detected before and after the washing process, and if it is determined that the amount of cloth after washing is more than a predetermined value than the amount of cloth before washing, the final dehydration process is performed. By slowing down the running time, photogenic wrinkles can be prevented even when the laundry is made of synthetic fibers. It is also economical because the operating time of the final dehydration step can be shortened.

A second embodiment of the present invention will be described below with reference to the drawings.

Since the configuration of the fully automatic washing machine is the same as that shown in FIG. 1, the explanation will be omitted and the operation will be explained below.

As shown in FIG. 3, the operation of each process is the same as in the first embodiment, except that the amount of cloth is not detected in the draining step after washing, but "cloth amount detection 2" is performed in the draining step after rinsing. Therefore, the explanation will be omitted.

If it is determined that the amount of cloth after rinsing is greater than the amount of cloth before washing by a predetermined value or more, the same effect as in the first embodiment can be obtained by shortening the operation time of the final dehydration step. .

Effects of the Invention As is clear from the description of the embodiments above, the present invention detects the amount of cloth even in the draining step after washing or rinsing, and controls the operating time of the final dewatering step. Wrinkling can be prevented, and the operating time of the final dehydration process can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of a fully automatic washing machine according to the first embodiment of the present invention, Fig. 2 is a process diagram showing the operation of the control means of the fully automatic washing iron, and Fig. FIG. 7 is a process diagram showing the operation of the control means of the fully automatic washing machine of the second embodiment. 1...Water level detection means, 2...Washing and dehydration monk, 4...Water level discrimination means, 6...Heaviness detection means, 7...・Method for determining cloth amount, 8...
... Control means, 9... Water supply valve driving means, 12.
... Stirring blade, 14... Drain valve driving means. Name of agent: Patent attorney Shigetaka Awano et al. 1. Famous confectionery 2 Figure 3

Claims (2)

[Claims] (1) The water level and operating time of the washing process and rinsing process and the operating time of the final spin-drying process according to the amount of laundry detected by the laundry amount detection means in the washing and dehydration tank and the amount of laundry detected by the said amount detection means. This fully automatic washing machine is equipped with a control means for controlling the washing process, detects the amount of cloth even in the draining process after washing is completed, and controls the operating time of the final spin-drying process. (2) The fully automatic washing machine according to claim 1, wherein the amount of cloth is detected in the draining step after rinsing instead of in the draining step after washing.