CN101250802A - Instant-stop method for washing clothes and instant-stop automatic washing machine using the method - Google Patents

Abstract

The invention relates to a laundry method, especially a method for immediately stopping after washing clothes, comprising: entering clean water; reading a measurement value A of a turbidity sensor on a computer board; entering washing, and reading measurement value B before the end of washing; continuing washing until the set For a certain time, the computer board reads the measured value C; B-C=D; if D is less than k, then rinse; if D is greater than k, continue to wash and read the measured value for comparison until the last two read-in The difference in values is less than k. k is the set cleanliness value; after rinsing until the set time, read the measured value E of the turbidity sensor; A-E=F, if F is less than h, then dehydrate and end; if F is greater than h, continue Rinse until F obtained by comparing E with A is less than h, where h is the preset rinsing degree value. The invention can correctly judge whether the stains in the clothes have been washed out, and whether they have been rinsed clean. After rinsing, stop in time to achieve the effect of saving water and electricity, and there is no need to artificially set the number of rinsing times.

Description

Instant-stop method for washing clothes and instant-stop automatic washing machine using the method

technical field

The invention relates to a washing machine, in particular to an instant-stop method for washing clothes which can automatically judge whether to wash and thereby control the laundry process, and an instant-stop automatic washing machine applying the method.

Background technique

Although the automation and intelligence of existing washing machines have been developed to a fairly high level, and even remote-control laundry can be performed by telephone, there is no washing machine that can identify whether the clothes are washed. Cleanliness washing machine], the judgment method of the cleanliness described in this patent is as follows: (1) determine the minimum amount of detergent and washing water for the first time according to the weight of the clothes; (2) after washing for a period of time, read the output of the photoelectric sensor Value, according to the change of the value to determine the cleanliness of the clothes, and then according to the weight and cleanliness of the clothes to determine the increase in detergent, washing water and washing time and whether to wash multiple times; The degree determines the amount of rinse water, the rinse time and whether multiple rinses are performed.

It must be pointed out that the method for judging the degree of cleanliness disclosed in this patent still has the following defects:

1. In method (2), after washing for a period of time, read the output value of the photoelectric sensor, determine the cleanliness of the clothes according to the change of the value, and then determine the increase of detergent, washing water and washing time according to the weight and cleanliness of the clothes amount and whether to wash multiple times”; where “determine the cleanliness of the clothes according to the change of the output value of the photoelectric sensor” is compared with the preset data, the actual situation is that as the cleanliness of the washed clothes increases, the clothes The more the amount of stains dissolved in the washing water, the poorer the light transmittance of the washing water, and the worse the light transmittance is with the degree of dirtiness of the laundry, and the color fading of the laundry also affects the light transmittance , and in different regions and water quality, the test data are also different, therefore, comparing with the preset data cannot correctly reflect whether the clothes have been washed clean.

2. According to the condition of "increase in washing time and whether to perform multiple washings", it can be concluded that the value of the light transmittance set in advance should be relatively high. After a period of washing, the output of the photoelectric sensor read The application does not provide specific data on the set value and the difference, so it is impossible to determine the increase in washing time and whether to perform multiple washings. .

Contents of the invention

The technical problem to be solved by the present invention is to provide a stop-stop method for clothes that can correctly judge whether the laundry is washed or not, and a stop-stop fully automatic washing machine using the method.

The instant-stop method for washing clothes provided by the present invention is realized by the following technical scheme.

A method for washing and stopping clothes immediately, which is applied to a fully automatic washing machine. A turbidity sensor connected to a computer board is provided at a suitable part of the washing machine. The method includes the following steps:

(1) start up;

(2) Enter clear water;

(3) The computer board reads the measured value A of the turbidity sensor;

(4) Enter washing, and the computer board reads the measured value B of the turbidity sensor t minutes before the end of washing;

(5) Continue washing for t minutes, and the computer board reads the measured value C of the turbidity sensor;

(6) The computer board compares the numerical values read in twice successively, that is, B-C=D; if D is outside k, then proceed to the step

(7); if D is greater than k, proceed to steps (5) and (6) until the value of D obtained by comparing the last two read-in values is less than k. k is the cleanliness value preset and stored in the computer board.

(7) rinse;

(8) After rinsing until the set time, the computer board reads the measured value E of the turbidity sensor;

(9) the computer board compares the measured value E after rinsing with the measured value A when entering clear water, that is, A-E=F, if F is less than h, then carry out step (10); if F is greater than h, then continue to carry out step ( 7), (8), (9), until the F obtained by comparing the measured value E with the measured value A when entering clear water is less than h. h is the rinsing degree value preset and stored in the computer board;

(10) Dehydration and end.

The instant-stop method for washing clothes is characterized in that: the cleanliness value k=0-1V.

The instant-stop method for washing clothes is characterized in that: the rinsing degree value h=0-1V.

The present invention also provides a washing stop automatic washing machine used in the above method, comprising: an outer tub containing washing water, an inner tub coaxially arranged with the outer tub and capable of rotating around the central axis, and controlling and storing various washing programs The computer board and the control panel are characterized in that: a turbidity sensor is arranged at the bottom of the outer tub, and the turbidity sensor is electrically connected to the computer board.

The feature of the instant-stop fully automatic washing machine is that the control panel is provided with selection buttons for setting the degree of washing and rinsing.

The full automatic washing machine that stops when washing is characterized in that: the turbidity sensor is composed of a light emitter and a photoelectric converter, and the light emitter and photoelectric converter of the turbidity sensor are arranged at the inlet of the drain valve. In the mouth.

The feature of the wash-stop automatic washing machine is that the turbidity sensor is composed of a light emitter and a photoelectric converter, and a convex water tank is provided on the side of the outer tub near the bottom, and the opposite side plate of the water tank is As a transparent window, the light emitter and the photoelectric converter of the turbidity sensor are respectively pasted on the transparent windows on the opposite side plates of the water tank.

The said wash stop automatic washing machine is characterized in that: the light source of the light emitter of the turbidity sensor is a light emitting diode or other electric light sources, and is provided with a condenser lens; the photoelectric converter is a phototransistor , or photosensitive diodes.

The feature of the instant-stop automatic washing machine is that: the light-emitting diode of the light emitter constituting the turbidity sensor and the phototransistor of the photoelectric converter, or the circuit of the photodiode, is provided with a temperature compensation circuit.

The feature of the instant-stop automatic washing machine is that the temperature compensation circuit is a thermistor connected in series with a light-emitting diode, a phototransistor, or a photodiode circuit.

The advantage of the present invention is that: the present invention adds a turbidity sensor to the fully automatic washing machine, through the induction of the turbidity sensor, the cleanliness of the rinsing water is converted into a voltage signal, which is transmitted to the computer board program processor of the whole machine, The processor determines whether the clothes are rinsed clean according to the setting and controls the work of the whole machine. Finally, the effect of stopping when the clothes are cleaned is automatically achieved. Because the present invention adopts the comparison of the turbidity values measured by two sensors close to the end of washing time, it can be correctly judged whether the stains in the clothes have been washed out. By comparison, it can be correctly judged whether it is rinsed or not.

The invention stops the washing machine in time after the clothes are rinsed clean, so as to achieve the effects of saving water and electricity, and some users do not need to artificially set the number of times of rinsing when using the fully automatic washing machine.

In order to have a further understanding of the structural features and effects of the invention, specific embodiments are listed and described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a flow diagram of the washing and stopping method of the laundry according to the present invention.

Fig. 2 is a schematic diagram of the position of a turbidity sensor according to the present invention.

Fig. 3 is a schematic diagram of the location of another turbidity sensor of the present invention.

Fig. 4 is an enlarged view of part A of Fig. 3 .

Figure 5 is a circuit diagram of the turbidity sensor.

Detailed ways

In order to overcome the deficiency that the prior art cannot correctly judge whether the washed clothes are clean or not, the present invention proposes a new method of stopping the clothes when they are washed, and realizes the stop after washing, so as to save water, electricity and reduce pollution. Purpose.

The clothes cleaning and stopping method of the present invention is applied to a fully automatic washing machine, and a turbidity sensor connected to a computer board is provided at a suitable part of the washing machine. The method is shown in Figure 1 and includes the following steps:

(1) start up;

(2) Enter clear water;

(3) The computer board reads the measured value A of the turbidity sensor;

(4) Enter the washing, the computer board reads the measured value B of the turbidity sensor t minutes before the end of washing; usually take t as 0-5 minutes;

(5) Continue washing for t minutes, and the computer board reads the measured value C of the turbidity sensor;

(6) the computer board compares the numerical values read twice successively, i.e. B-C=D; if D is less than k, then carry out step (7); if D is greater than k, then continue to carry out steps (5), (6), Until the last two read-in numerical comparisons, the D value obtained is less than k. k is the cleanliness value preset and stored in the computer board.

(7) rinse;

(8) After rinsing until the set time, the computer board reads the measured value E of the turbidity sensor;

(9) the computer board compares the measured value E after rinsing with the measured value A when entering clear water, that is, A-E=F, if F is less than h, then carry out step (10); if F is greater than h, then continue to carry out step ( 7), (8), (9), until the F obtained by comparing the measured value E with the measured value A when entering clear water is less than h. h is the rinsing degree value preset and stored in the computer board;

(10) Dehydration and end.

The cleanliness value k=0-1V in the present invention. The rinsing degree value h=0-1V. The specific value can be set in advance and solidified in the computer board, or can be set by the user according to the needs.

The present invention also provides a wash-and-stop fully automatic washing machine used in the above method, as shown in Figure 2, comprising: an outer tub 1 containing washing water, an inner tub coaxially arranged with the outer tub 1 and capable of rotating around a central axis 2. A computer board and a control panel (not shown) for controlling and storing various washing procedures, wherein: a turbidity sensor 3 is provided on the drain valve at the bottom of the outer tub 1, and the turbidity sensor 3 is electrically connected to the motherboard.

When working, the computer board first reads the turbidity (transmittance) value A of the clear water measured by the turbidity sensor; enters the washing, and the computer board reads the measured value B of the turbidity sensor t minutes before the end of washing; usually t is 2 -3 minutes; continue washing for t minutes, the computer board reads the measured value C of the turbidity sensor; the computer board compares the values read twice successively, that is, B-C=D, is D less than k? k is the cleanliness judgment value preset and stored in the computer board. As mentioned above, usually k=0~1V; If it is all washed out, rinse can be carried out; if it is greater than k, it means that the stains in the clothes have not been completely or nearly completely washed out, and washing needs to be continued; continue washing for t minutes, and the computer board reads the measured value C' of the turbidity sensor again; Compare C' with the previous measured value C, C-C'=D, is D less than k? If it is less than k, it means that the two measurement results are close, and the stains in the clothes have been completely or nearly completely washed out, and then rinsing can be performed; It is necessary to continue washing until the two adjacent measurement results are less than k before entering the rinsing procedure.

During the rinsing process, when rinsing reaches the set time, the computer board reads the measured value E of the turbidity sensor; the computer board compares the measured value E after rinsing with the measured value A when entering clean water, that is, A-E=F, whether F is less than h, h is the rinsing degree value preset and stored in the computer board. As mentioned above, usually h=0~1V; Dehydrate and finish.

In order to facilitate the user to set the cleanliness degree k or rinse degree value h according to the needs, there are selection buttons for setting the cleanliness degree and rinse degree on the control panel.

The turbidity sensor 3 is composed of a light emitter 31 and a photoelectric converter 32 .

Fig. 3 and Fig. 4 are schematic diagrams of another position of the turbidity sensor of the present invention. In the embodiment of Fig. 4, an outwardly convex water tank 4 is provided near the bottom of the outer tub 1, and the opposite side plate of the water tank is set as a transparent window 5, and the light emitter 31 and the photoelectric converter 32 of the turbidity sensor are attached respectively. On the transparent window 5 of the opposite side plate of the tank.

The light emitted by the light transmitter 31 reaches the photoelectric converter 32 through the transparent window 5-water tank 4-transparent window 5, and the photoelectric converter 32 converts the received light into a voltage signal and sends it to the computer board, and the analog The quantity is converted into a digital quantity and sent to the microprocessor in the computer board. The voltage signal output by the photoelectric converter 32 is proportional to the received light intensity.

Figure 5 is a circuit diagram of the turbidity sensor. The light source of the light emitter of described turbidity sensor is light-emitting diode D or other electric light source, and is provided with condenser lens 33, makes the light emitted by light source become parallel light and shoots to photoelectric converter; Described photoelectric converter is a phototransistor G, or photosensitive diode.

In order to reduce the change of the luminous intensity of the light emitter and the voltage change of the photoelectric converter caused by temperature, on the circuit of the light emitting diode of the light emitter constituting the turbidity sensor and the phototransistor of the photoelectric converter, or the photodiode Equipped with temperature compensation circuit. The temperature compensation circuit may be a thermistor Rt connected in series with a light emitting diode, or a phototransistor, or a photodiode circuit.

In the invention, the turbidity sensor is installed on a suitable part of the washing machine in contact with water, and both the light emitting and receiving parts are in contact with the liquid to be detected. The computer program controller supplies the working voltage to the sensor, and the sensor starts to work. When the sensor detects a stable signal, the computer board reads the voltage at the receiving end of the sensor for processing, and issues instructions according to the result, and the washing machine executes the corresponding washing program.

Claims (10)

1. A method for immediately stopping the washing of clothes, which is applied to a fully automatic washing machine. A turbidity sensor connected to a computer board is provided at a suitable part of the washing machine. The method comprises the following steps: (1) start up; (2) Enter clear water; (3) The computer board reads the measured value A of the turbidity sensor; (4) Enter washing, and the computer board reads the measured value B of the turbidity sensor t minutes before the end of washing; (5) Continue washing for t minutes, and the computer board reads the measured value C of the turbidity sensor; (6) The computer board compares the numerical values read in twice successively, that is, B-C=D; if D is less than k, then proceed to the step (7); if D is greater than k, proceed to steps (5) and (6) until the value of D obtained by comparing the last two read-in values is less than k. k is the cleanliness value preset and stored in the computer board. (7) rinse; (8) After rinsing until the set time, the computer board reads the measured value E of the turbidity sensor; (9) the computer board compares the measured value E after rinsing with the measured value A when entering clear water, that is, A-E=F, if F is less than h, then carry out step (10); if F is greater than h, then continue to carry out step ( 7), (8), (9), until the F obtained by comparing the measured value E with the measured value A when entering clear water is less than h. h is the rinsing degree value preset and stored in the computer board; (10) Dehydration and end. 2. The instant-stop method for washing clothes according to claim 1, characterized in that: the cleanliness value k=0-1V. 3. The instant-stop method for washing clothes according to claim 1, characterized in that: the rinsing degree value h=0-1V. 4. A fully automatic washing machine for cleaning and stopping when implementing the method according to claim 1, comprising: an outer tub containing washing water, an inner tub coaxially arranged on the outer tub that can rotate around a central axis, and controls and stores various washing machines. The computer board and the control panel of the program are characterized in that a turbidity sensor is arranged at the bottom of the outer tub, and the turbidity sensor is electrically connected to the computer board. 5. The instant-stop fully automatic washing machine according to claim 4, characterized in that: the control panel is provided with selection buttons for setting the degree of washing and rinsing. 6. The instant-stop automatic washing machine according to claim 4, characterized in that: the turbidity sensor is composed of a light emitter and a photoelectric converter, and the light emitter and photoelectric conversion of the turbidity sensor The device is set in the water inlet of the drain valve. 7. The instant-stop fully automatic washing machine according to claim 4, characterized in that: the turbidity sensor is composed of a light emitter and a photoelectric converter, and a protruding container is provided on the side of the outer tub near the bottom. In the water tank, the opposite side plates of the water tank are provided with transparent windows, and the light emitter and the photoelectric converter of the turbidity sensor are respectively pasted on the transparent windows of the opposite side plates of the water tank. 8. According to claim 6 or 7, the washing and stopping automatic washing machine is characterized in that: the light source of the light emitter of the turbidity sensor is a light emitting diode or other electric light source, and is provided with a condenser lens; The photoelectric converter is a phototransistor or a photodiode. 9. The washing and stopping automatic washing machine according to claim 8, characterized in that: the light emitting diode of the light emitter constituting the turbidity sensor and the phototransistor of the photoelectric converter or the circuit of the photodiode are provided with temperature compensation circuit. 10. The instant-stop automatic washing machine according to claim 9, characterized in that: said temperature compensation circuit is a thermistor connected in series with a light-emitting diode, or a phototransistor, or a photodiode circuit.

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