JPS6357079B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Purpose of the Invention [Field of Industrial Application] This invention relates to a washing machine, and more specifically, a structure for detecting the type and weight of laundry put into a washing tub. Regarding washing machines equipped with

[Conventional technology]

Generally, in order to effectively remove stains from laundry in a washing machine, it is sufficient to maintain a certain ratio between the amount of laundry cloth, the amount of water supplied, and the amount of detergent. It is known that a good method is to determine the dehydration time based on the type of fabric (herein referred to as the type of fiber) and amount of laundry.

In conventional washing machines, water is supplied into the washing tub where the laundry is loaded, and when the water level is low near the bottom of the washing tub, a pulsator installed at the bottom is activated, and the laundry is fed into the pulsator. The amount of laundry in the washing tub is detected by measuring the starting current of the pulsator drive motor, which changes depending on the amount of laundry in the washing tub.

[Problem that the invention seeks to solve]

However, the above-mentioned washing machines have the disadvantage that the laundry gets damaged due to the rotation of the pulsator, and they are not equipped with a structure to detect the type of laundry.
The only way to sort out the types of laundry was by humans.

This invention was made in view of the above circumstances,
Its main purpose is to detect the type and weight of the laundry in the washing tub based on the relationship between the amount of water supplied to the washing tub into which the laundry is loaded and the amount of water level change in the washing tub due to water supply. The goal is to make it possible.

(B) Structure of the Invention The present invention includes a washing machine main body and a detection means for detecting the weight and type of fibers of the laundry put into the washing tub of the main body during washing, and the detection means When the water level of the washing water supplied into the washing tub reaches a preset water level H ₁ near the bottom of the washing tub where the laundry can soak, and a water level H ₂ that is a predetermined height ΔH above this water level. A water level detection means detects the amount of washing water Q 1 and Q 2 in the washing tub at these water levels H ₁ and H ₂ , a flow rate detection means detects the amount of washing water Q ₁ and Q ₂ at these water levels H 1 and H 2 , and the difference ΔQ between these amounts of washing water and the difference between this ΔQ and the ΔH Calculate the ratio ΔH/ΔQ between ΔH/ΔQ and ΔH/ΔQ, which has been measured in advance in multiple sections depending on the amount of water absorbed, and the corresponding ΔH/ _ΔQ of each laundry according to the amount of water absorbed. a laundry determining means for determining the type of fiber of the cloth of the laundry put into the washing tub by comparing the above, and a method for determining the type of fiber of the cloth of the laundry put into the washing tub, and a method that corresponds to the above-mentioned _Q1 and the above-mentioned amount of water absorption measured in advance based on this determination. This washing machine is comprised of a weight calculating means for calculating the weight of the cloth of the laundry thrown into the washing tub from the relationship with the weight of each cloth.

That is, the present invention is configured to determine the type of fabric and the weight of the laundry loaded into the washing tub when the washing water is filled to the water level _H2 .

〔Example〕

The present invention will be described in detail below based on the embodiments shown in FIGS. 1 to 8. Note that this invention is not limited to this.

FIG. 1 is an explanatory diagram of the structure of a washing machine 1, and FIG. 2 is an electric circuit diagram thereof. 2 is the washing machine body, 3 is a washing tub, 4 is a pulsator, 5 is a pulsator drive motor, 6 is a drain pipe, 7 is a drain valve, 8 is a water tap, 9 is a water supply pipe, 10 is a water supply valve, 11, 12 , 13 is a drive unit for the water supply valve 10, the motor 5 and the drain valve 7, 14
is the AC100V connection, and 15 is the laundry.

3 and 4 are graphs showing the relationship between the water level in the washing tub 3 into which the laundry 15 is placed and the amount of washing water. In Fig. 3, A, B, and C are the laundry items 15 divided into three types according to the amount of water absorption. C indicates laundry made of synthetic fibers and natural fibers such as linen and cotton; C indicates laundry made of natural fibers such as linen and cotton, which have the highest water absorption;
Each of these fabrics has the same weight. In FIG. 4, D, E, and F indicate any one of the types of laundry items A, B, and C in FIG. 3, and the weights of the laundry items are in the relationship D>E>F. Further, in both figures, X is a straight line indicating a change in the water level that rises due to water supply when no laundry 15 is put into the washing tub 3. Further, H ₁ is a preset water level in which the laundry 15 in the washing tub 3 can be immersed, and H ₂ is a water level that is a predetermined height ΔH above the water level H ₁ .

FIG. 5 is a graph showing the relationship between the volume and weight of each type of laundry 15 measured in advance, and FIG.
FIG. 7 is a graph showing the relationship between the cloth weight and the optimum water level and optimum amount of detergent for laundry 15, and FIG. 7 is a graph showing the relationship between the cloth weight and the optimum dewatering time for laundry 15. FIG. 8 is an operation flowchart showing the operation of each part from the start to the end of washing.

As shown in FIG. 1, a water level detection sensor 16 is provided on the inner wall near the bottom of the washing tub 3 corresponding to H ₁ and H ₂ and extends from above outside the tub 3. A water level detection sensor 16 is electrically connected to the side of the washing tub 3 from the valve 10.
Water supply amount in washing tub 3 at H ₁ and H ₂ water levels
A flow rate detection sensor 17 for measuring Q ₁ and Q ₂ is provided (see Figure 2).

Further, the washing machine main body 2 includes a calculation means 18 for calculating the difference ΔQ in water supply amount between the above H ₁ and H ₂ and the ratio ΔH/ΔQ between this ΔQ and the above ΔH, and a calculation means 18 for calculating the difference ΔQ in water supply amount between the above H 1 and H 2 and the ratio ΔH/ΔQ between this ΔQ and the above ΔH, (ΔH/ΔQ _i ) of the laundry of A, B, and C, that is, (ΔH/ΔQ _A ) (ΔH/ΔQ _B )
(ΔH/ΔQ _C ), respectively, and determines the fiber type of the laundry 15 put into the washing tub 3.
9, and a weight calculation means 20 for calculating the weight of the laundry put into the washing tub 3 from the relationships shown in FIGS. 3, 4, and 5. These three means 18, 19, and 20 consist of a microcomputer 21, a water level detection sensor 16, a flow rate detection sensor 17, a display unit 22 equipped with an operation lamp, a washing lamp (not shown), an operation switch, a washing switch, etc. An operation switch section 23 equipped with a microcomputer, a power supply section 24 of the microcomputer, and each of the drive sections 11, 12, and 13 are electrically connected. Further, the microcomputer 21 includes a washing condition determining means (not shown) for determining the optimum washing water level and the optimum amount of detergent from FIG.
A dehydration time determining means for determining the optimum dehydration time from the diagram is incorporated. The above water level detection sensor 16, flow rate detection sensor 17, and microcomputer 21 constitute a detection means.

Next, the operation of the above device will be explained (see FIG. 8).

First, when actually washing the laundry, the user cannot expect to wash the laundry 15 by type, so the third
According to the diagram, the laundry 15 is processed as described below to determine its type.

Laundry A containing a lot of synthetic fibers...Water level H ₁ to ΔH
Laundry _C containing a lot of linen and cotton... Also close to ΔQ _C Laundry B between A and C above... Also close to ΔQ _B In this case, as shown in Figure 3 and laundry 15 according to Figure 4.
You can get information about the bulk of the fabric. After sorting, the amount of laundry W is determined according to a in FIG. 5 for A, b for B, and c for C in FIG. Thereafter, based on this determination, washing is carried out at the optimum water level and the optimum amount of detergent, and after the washing is finished, as shown in FIG. 7, for example, the weight of the laundry 15 is
If the type is A at W ₁ , dehydration is performed for T ₁ hour.

(c) Effects of the Invention This invention detects the type of fibers of the laundry in the washing tub based on the relationship between the amount of water supplied to the washing tub into which the laundry is loaded and the amount of water level change in the washing tub due to water supply. Since it is configured to automatically detect the laundry load and weight, it is possible to effectively remove dirt from the laundry without damaging the laundry placed in the washing tub. This has the effect of easily determining the optimum time for dehydration of objects.

[Brief explanation of drawings]

Fig. 1 is a configuration explanatory diagram showing one embodiment of a washing machine according to the present invention, Fig. 2 is an electric circuit diagram of this washing machine, and Figs. 3 and 4 show the relationship between the water level in this washing tub and the amount of water supplied. Figure 5 is a graph showing the relationship between the bulk and weight of this laundry, Figure 6 is a graph showing the relationship between the weight of this laundry and the optimum water level and optimal amount of detergent, and Figure 7 is a graph showing the relationship between the weight of this laundry and the optimum water level and optimum amount of detergent. This operation flowchart is shown in FIG. 8, a graph showing the relationship between the weight of the cloth and the optimum dewatering time. 1...Washing machine, 2...Main body, 3...Washing tub, 1
5... Laundry, 16... Water level detection sensor, 17
...Flow rate detection sensor, 18, 19...Laundry determining means, 20...Weight calculation means, 16-20...
Detection means.

Claims (1)

[Scope of Claims] 1. A washing machine main body, and a detection means for detecting the weight and type of fibers of laundry put into a washing tub of this main body during washing, and this detection means is used for washing. The water level of the washing water supplied into the tank is a preset water level _H1 near the bottom of the washing tank where laundry can be immersed, and a water level a predetermined height ΔH above this water level.
water level detection means for detecting that water level H ₂ has been reached; flow rate detection means for detecting washing water amounts Q ₁ and Q ₂ in the washing tub at these water levels H ₁ and H ₂ ; The ratio ΔH/ΔQ between this ΔQ and the above ΔH is calculated, and each laundry item for each water absorption amount corresponds to this ΔH/ΔQ and ΔH/ΔQ, which has been measured in advance in multiple sections depending on the water absorption amount. laundry determining means for determining the type of fiber of the cloth of the laundry loaded into the washing tub by comparing ΔH/ΔQ _i of
A washing machine comprising: a weight calculating means for calculating the weight of the cloth of the laundry thrown into the washing tub from the relationship between _Q1 and the weight of each cloth corresponding to the amount of water absorption.