JPS61137598A - 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] (a) Purpose of the Invention [Field of Industrial Application] The present 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 placed, 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 through the pulsator. The starting current of the pulsator drive motor, which changes depending on the amount of water entangled, is measured to detect the placement of laundry in the washing tub.

[Problem that the invention seeks to solve]

However, the above-mentioned washing machine has the disadvantage that the laundry gets damaged due to the rotation of the pulsator, and since it is not equipped with a structure for detecting the type of laundry, the only way to determine the type of laundry is to manually sort the laundry.

This invention was made in view of the above circumstances, and its main purpose is to determine the amount of water that can be washed from the relationship between the amount of water supplied to the washing tub into which laundry is loaded and the amount of water level change in the washing tub due to water supply. The purpose is to be able to detect the type and weight of the laundry in the tub.

(B) Structure of the Invention The present invention comprises 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 The water level of the washing water supplied into the washing tub is a preset water level (H1) near the bottom of the washing tub where all the laundry can be immersed, and a water level (H2) that is a predetermined height ΔH above this water level. ) and water level detection means for detecting that these water levels (Hs
) (Amount of washing water in the washing tub in [2) (Q1)
(Q2); a laundry determination means that determines the type of fiber of the cloth with the difference in the amount of washing water ΔQmQ; weight calculation means for calculating the weight of the laundry put into the washing tub in relation to the weight of each city corresponding to the amount of water absorption;
This is a washing machine consisting of the following.

That is, the present invention is configured to determine the type of fabric and the weight of the laundry thrown into the washing tub when the washing water is filled up to the above-mentioned 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 construction of the washing machine +11, and FIG. 2 is its electrical circuit diagram. (2) is the washing machine body, (3) is the 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 the water supply pipe, αω is the water supply valve, (11) (12)
(13) is the water supply valve αω, the motor (5) and the drain valve (7).
) drive unit, (14) is AC100 connection unit, (15)
is laundry.

FIGS. 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 Figure 3, (A), (B), and (C) are washing/
Item (15) is divided into three types depending on the amount of water absorption. (A) is laundry made of synthetic fibers with the lowest water absorption, and (B) is laundry made of synthetic fibers and linen, which have intermediate water absorption. Laundry made of natural fibers such as cotton, (C) is linen, which has the best water absorption.
Shows laundry made of natural fibers such as cotton, each of which has the same weight.

In Figure 4, CD) (E) (F) is (CD) (E) (F) in Figure 3.
Indicates one type of laundry (A), (B), or (C), and the weight of the laundry is (13) > (E) >
The relationship is as shown in (F). Moreover, in both figures, (X) is a straight line showing the change in the water level that rises due to water supply in a state where no laundry (15) is put into the washing tub (3).

In addition, (H1) is a preset water level in which all of the laundry (15) in the washing tub (3) can be immersed, and (H2) is a water level that is a predetermined height ΔH) above this water level (H1). be.

Figure 5 is a graph showing the relationship between pre-measured bulk and weight for each type of laundry (15), and Figure 6 is a graph showing the relationship between the weight of laundry (15) and the optimal water level and optimal amount of detergent. The graph shown in FIG. 7 is a graph showing the relationship between the weight of the laundry (15) and the optimum dewatering time. 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 (H1) and (H2) above, extending from above outside the tub (3). The water level detection sensor (16) is electrically connected to the water level detection sensor (16) on the side of the washing tub (3) from the water supply valve a1 of the water supply pipe (9), and detects the water level in the washing tub (3) at the water levels (H1) and (H2). A flow rate detection sensor (17) is provided to measure the amount of water supplied (Q1) (Q2) (see Figure 2).

In addition, the washing machine main body (2) has the above (H1) and (H2).
), and the difference between this ΔQ and the above ΔHΔQ
A washing method in which the fiber type of the laundry (15) put into the washing tub (3) is determined by comparing the laundry product (A), (B), and (C) with the corresponding laundry product (A), (B), and (C). The weight calculation means (20) calculates the weight of the laundry put into the washing tub (3) from the relationship between the object determination means (19) and FIGS. 3, 4, and 5.
) is provided. These three means (18)
(19) (20) consists of a microcomputer (21), a display section (22) equipped with a water level detection sensor (16), a flow rate detection sensor (17), an operation lamp, a washing lamp (not shown), etc., and an operation switch. , an operation switch unit (23) equipped with a cleaning switch, etc., a microcomputer power supply unit (24), and each of the drive units (11).
(12) (13) are electrically connected.

Further, although not shown, the microcomputer (21) is equipped with washing condition determining means for determining the optimum washing water level and optimum amount of detergent from FIG. 6, and spin-drying time determining means for determining the optimum spin-drying time from FIG. It is. The above-mentioned water level detection sensor (16), flow rate detection sensor (17), and microcomputer 9 (21) constitute a detection means.

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

First, when actually washing the laundry (15), since the user cannot wish to wash the laundry (15) by type, the laundry (15) is processed as described below according to FIG. 3 to determine its type.

Laundry that contains a lot of synthetic fibers (A) - Laundry that has a water supply amount from water level H1 to ΔH close to ΔQA Laundry that contains a lot of hemp/cotton (C) - Laundry that is also close to ΔQc (8) and (C) above Intermediate laundry (B) - also ΔQ
At this time, information about the bulk of the laundry (15) can be obtained from FIGS. 3 and 4. And the type is later, A
If so, the laundry placement (W) is determined according to fal in FIG. 5, (b) if B, and (C) if C.

Then, based on this determination, washing is carried out at the optimum water level and optimum amount of detergent, and after washing is completed, as shown in FIG. 7, for example, if the weight of the laundry (15) is Wl and its type is A, Perform dehydration for T1 hour.

(C) Effects of the Invention This invention has been developed based on the relationship between the amount of water supplied into the washing tub into which the laundry is loaded and the amount of change in the water level 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. The effect is that the hydrophilic time of an object can be easily determined to be the optimum time.

Figure 2 is the electrical circuit diagram, Figures 3 and 4 are graphs showing the relationship between the water level in the washing tub and the amount of water supplied, and Figure 5 is a graph showing the relationship between the volume and weight of the laundry. , Fig. 6 is a graph showing the relationship between the weight of this laundry and the optimum water level and optimum amount of detergent, Fig. 7 is a graph showing the relationship between the weight of this laundry and the optimum spin-drying time, and Fig. 8 is a graph showing the relationship between the weight of this laundry and the optimum water level and optimum amount of detergent. It is an operation flowchart.

(11-m-washing machine, (2) one body, (3)-washing tub,
(15) - Laundry, (16) - Water level detection sensor, (
17) - Flow rate detection sensor, (18) (19) ~...
- Laundry determining means, (20) - Weight calculating means, (16)
~(20)--Detection means.

Figure 1 Figure 3 Figure 4

Claims (1)

[Claims] 1. A washing machine comprising 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 includes: The water level of the washing water supplied into the washing tub is set at a preset water level near the bottom of the washing tub (H_
1) and the water level (H) above this water level by a predetermined height (ΔH).
_2), a flow rate detection means for detecting the amount of washing water (Q_1) (Q_2) in the washing tub at these water levels (H_1) (H_2), and the difference between these amounts of washing water. ΔQ and the ratio ΔH/ΔQ between this ΔQ and the above ΔH are calculated, and each of the water absorption amounts corresponding to this ΔH/ΔQ and ΔH/ΔQ, which have been measured in advance in multiple parts depending on the amount of water absorption, are calculated. laundry determining means for determining the type of fiber of the cloth of the laundry put into the washing tub by comparing ΔH/ΔQi of the laundry; and the above Q_1 and the water absorption measured in advance based on this determination. A washing machine comprising: weight calculation means for calculating the weight of each piece of laundry thrown into a washing tub from the relationship with the weight of each piece of cloth corresponding to the amount of the laundry.