JPH07124374A - Washing machine - Google Patents

Abstract

PURPOSE:To improve the efficiency by detecting permeabilities respectively of the washing water before adding a detergent and of the washing water with a detergent added and before starting washing, by determining the kind of detergent from both the permeabilities, and by setting a washing time and a rinsing time according to the kind of determined detergent. CONSTITUTION:When a power source switch 14 is operated. a water supplying electromagnetic pulp 17 opens to start supplying water. Also, a permeability detecting device 17 detects the permeability of the supplied water and inputs to a control device. Thus, the control device obtains the permeability value of the washing water before adding a detergent. The supplied water flows into an outer tank 3 together with the detergent added to a detergent adding case 13. When the washing water accumulates to a predetermined quantity, the water supplying stops, the permeability of a washing water with a detergent added and before starting washing is detected at the permeability detecting device 17, and inputs to the control device. The control device determines the kind of the detergent from the permeability values before adding the detergent and after adding the detergent, and according to the kind, a washing time and a rinsing time are set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine in which the washing time and the rinsing time are controlled based on the permeability of the washing water and the rinsing water in a washing tub.

[0002]

2. Description of the Related Art Conventionally, there is a washing machine in which the washing time and the rinsing time are controlled on the basis of the permeability of the washing water and the rinsing water in the washing tub. Such a washing machine is composed of a light emitting diode and a phototransistor as disclosed in, for example, Japanese Patent Publication No. 2-33400, and the light from the light emitting diode is washed with washing water in a washing tub and rinsed. There is one provided with a transparency detecting means for transmitting the water to the phototransistor and detecting the permeability of the wash water and the rinse water by the output of the phototransistor at this time.

When performing washing and rinsing in a washing machine equipped with such a transparency detecting means, the transparency detecting means inputs the transparency information to the controller for controlling the washing and rinsing operations at a predetermined timing. I am trying.
Then, the control device obtains the transmittance change rate based on this transmittance information, and sets the washing time and the rinsing time based on this transmittance change rate data.

[0004]

By the way, various kinds of detergents are used for washing, but if the detergents are melted before the washing, the washing before the washing is started according to the kind of the detergent to be used. The water permeability, that is, the output of the phototransistor, is not so low when a liquid detergent is used, as shown in FIG. 3, for example, but it is slightly lower when a synthetic detergent is used and when a powdered soap is used. It will be quite low.

However, in the conventional washing machine, the washing time and the rinsing time are set by the change rate of the permeability as described above. If the degree is different, the rate of change in the permeability of the washing water will differ significantly depending on the type of detergent used, even if the dirt is removed during the washing operation. There is a problem that it is not possible to set a proper washing time and rinsing time.

Therefore, the present invention has been made in order to solve such problems, and an object thereof is to provide a washing machine capable of setting a washing time and a rinsing time according to a detergent used. It is what

[0007]

According to the present invention, there is provided a permeability detecting means for detecting the permeability of washing water and rinsing water in a washing water tank, and the washing water before the detergent is added detected by the permeability detecting means. And the value of the permeability before the washing operation is started by adding the detergent to determine the type of the detergent introduced, washing time and rinse time according to the determined detergent type Is provided with control means for setting.

[0008]

The control means controls the dispensed detergent by the value of the permeability of the washing water before the detergent is detected by the permeability detecting means and the permeability of the detergent before the washing operation is started. The type can be determined, and the washing time and the rinse time can be set according to the determined type of detergent.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view of a fully automatic washing machine which is an example of a washing machine according to an embodiment of the present invention.

In the figure, reference numeral 1 is a machine frame of a fully automatic washing machine, and an upper surface 1a of the machine frame 1 is formed with a clothes loading / unloading opening 1A in which an upper door 2 is openably and closably provided.
In addition, an upper surface opening 3a which is suspended and held by a hanging rod 3A inside the machine frame 1 and faces the clothes loading / unloading port 1A.
An outer tub 3 in which is formed is provided, and a dehydrating tub 4 having an upper surface opening 4a facing the clothes loading / unloading port 1A is rotatably attached inside the outer tub 3.

By the way, a large-diameter mountain-shaped rotary blade 5 is provided at the inner bottom of the dehydration tub 4 for generating a water flow and circulating clothes. The rotary blade 5 is arranged below the outer tub 3 and is arranged at a predetermined position of the machine frame 1,
The motor 6 is rotated by a drive signal from a control device (not shown) that controls the washing and rinsing operations. The motor 6 is capable of forward and reverse rotations, and the control device reverses the direction of the water flow by rotating the motor 6 forward and backward at a predetermined timing.

On the other hand, in the figure, 7 is a small pulley attached to the rotary shaft 6a of the motor 6, and 8 is the rotation of the motor 6 to a power transmission mechanism 10 via a transmission member 9 such as a small pulley 7 and a fan belt. It is a large pulley to convey. Here, the power transmission mechanism 10 is for transmitting the rotation of the motor 6 only to the rotary blades 5 at the time of washing, and transmitting the rotation of the motor 6 to the dehydration tub 4 and the rotary blades 5 at the time of spin-drying for high speed rotation.

By the power transmission mechanism 10, only the rotary blades 5 rotate during washing, the rotation of the rotary blades 5 causes a water flow in the washing water in the dehydration tub 4, and the water flow in the dehydration tub 4 causes the washing water to flow. The clothes will flow. At the time of dehydration, the rotary blades 5 and the dehydration tank 4 rotate at high speed to dehydrate the clothes.

On the upper part of the machine casing 1, a power switch 11 and a water supply electromagnetic valve 12 are arranged, and a detergent case 13 for supplying a detergent and a water supply port 14 are formed. When the power switch 11 is turned on, the control device opens the water supply electromagnetic valve 12 so that the wash water W is supplied from the water supply port 14 to the outer tub 3. In addition, at the time of this water supply, the washing water W is designed to pass through the detergent case 13, whereby the detergent case 1
The detergent in 3 flows into the outer tub 3 together with the washing water W.

On the other hand, a drainage hole 3b is formed on the bottom surface of the outer tank 3, and a drainage electromagnetic valve 15 is arranged below the drainage hole 3b. At the time of dehydration, the control device opens the drainage electromagnetic valve 15 so that the dehydrated water is drained to the outside from the drainage hole 3b and the drainage hose 16 communicating with the drainage electromagnetic valve 15. It has become.

By the way, a permeability detecting device 17 is disposed between the drain hole 3b and the drain electromagnetic valve 15, and the control device carries out washing from the permeability detecting device 17 which is the permeability detecting means. Water permeability information is input at a predetermined timing. Here, this control device controls the washing and rinsing operations, determines the type of detergent that has been added based on the permeability information from the permeability detection device 17, and determines the washing time according to the determined type of detergent. It also serves as a control means for setting the rinsing time.

The control unit stores a calculation unit for calculating the transmittance based on the transmittance information from the transmittance detector 17, and a table showing the types of detergents and the transmittance change rates corresponding to the respective detergents. The permeability change rate is obtained from the stored storage unit, the permeability value of the wash water obtained from the calculation unit before the detergent is added, and the permeability value before the detergent is added and the washing operation is started. And a control unit that determines the type of detergent that has been added based on the permeability change rate and the table of the storage unit, and sets the washing time and the rinsing time according to the determined type of detergent.

In this embodiment, the transmittance information from the transmittance detector 17 immediately after the power is turned on is used as the value of the transmittance of the wash water before the detergent is charged. Further, when the value at this time is lower than the specified value due to the performance deterioration of the transmittance detecting device 17 or the like, the control unit corrects the transmittance information to the specified value and initializes it (see FIG. 3). ), And the subsequent transparency information is similarly corrected.

Further, in the present embodiment, the control device rotates the rotary blades 5 to detect the amount of laundry before starting washing, but the rotary blades 5 can be rotated in this manner. This allows the detergent to be evenly dissolved in the washing water before the detergent is added and the washing operation is started. When a predetermined amount of washing water is stored in the outer tub 3, the control device closes the water supply electromagnetic valve 17 to start the washing operation.

Next, the washing operation of the thus constructed washing machine will be described with reference to the flow chart shown in FIG.

First, when the power switch 14 of the operation unit 13 is pressed, the controller opens the water supply electromagnetic valve 17 to start the water supply operation (process 50). On the other hand, immediately after the power is turned on, the transparency information from the transparency detecting device 17 is input to the control device, and the value of the permeability of the washing water before the detergent is applied is obtained from this transparency information (process 51). At this time, if the value of the transparency is lower than the specified value, the transparency information is corrected to the specified value.

By the way, after this, the water supply operation is continued, and the wash water flows into the outer tub 3 through the water supply port 16 together with the detergent charged in the detergent input case 15, and eventually a predetermined amount of wash water is accumulated in the outer tub 3. Then, the control device closes the water supply electromagnetic valve 17 to end the water supply operation (Y in judgment 52).

When the water supply operation is completed, the value of the permeability of the washing water before the washing operation is started by adding the detergent is obtained from the permeability information at this time (process 53). When the transmittance of the washing water before the detergent is added is corrected, the value of the transmittance is also corrected.

Thereafter, the control device calculates the rate of change in the permeability from the value of the permeability of the washing water before the detergent is added and the value of the permeability before the detergent is added and the washing operation is started (process). 5
4). Then, the type of detergent put in is determined from the table stored in the storage unit based on the change rate of the transparency, and the washing time and the rinsing time are set according to the determined type of detergent (process 55, 56). . After that, the control device controls the washing operation and the rinsing operation based on the set washing time and rinsing time.

As described above, the transmittance value of the washing water before the detergent is put in and the value of the transmittance before the detergent is put in and the washing operation is started are detected by the transmittance detecting device 17. The type of the introduced detergent can be determined based on the permeability change rate. Further, the washing time and the rinsing time can be set according to the type of detergent judged in this way.

[0027]

As described above, according to the present invention, the permeation value of the washing water before the detergent is added and the permeation value before the washing operation is started by adding the detergent to the detergent Since the type is determined, the washing time and rinsing time can be set according to the detergent used, and efficient washing and rinsing can be performed.

[Brief description of drawings]

FIG. 1 is a side sectional view of a fully automatic washing machine which is an example of a washing machine according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a washing operation of the washing machine.

FIG. 3 is a diagram showing changes in the permeability of cleaning water when different types of detergents are melted.

[Explanation of symbols]

 1 Machine frame 3 Outer tank 17 Permeability detection means

Claims (1)

[Claims] 1. A permeability detecting means for detecting the permeability of washing water and rinsing water in a washing water tank, a value of the permeability of the washing water before the detergent is detected by the permeability detecting means, and a detergent. The washing machine is provided with a control means for determining the type of the introduced detergent from the value of the transparency before the start of the washing operation and setting the washing time and the rinsing time according to the determined type of the detergent. A washing machine characterized by that.