JPH09182888A - Fully automatic washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the decline of a washing effect with a simple structure by operating only a hot water supply means for a prescribed time before storing a prescribed amount of washing water inside a washing and dehydrating tank by the operation of a water supply and hot water supply execution means. SOLUTION: A water supply pipe 21 whose one end is connected to a water supply equipment and other end is led to the upper part of the washing and dehydrating tank 5 and a water supply valve 22 composed of a solenoid valve provided in the middle of the water supply pipe 21 are provided, the water supply valve 22 is opened and water is supplied from the water supply equipment to the inside of the washing and dehydrating tank 5. Also, a hot water supply pipe 23 whose one end is connected to a hot water supply equipment and other end is led to the upper part of the washing and dehydrating tank 5 and a hot water supply valve 24 as the solenoid valve provided in the middle of the hot water supply pipe 23 are provided, the hot water supply valve 24 is opened and hot water is supplied from the hot water supply equipment to the inside of the washing and dehydrating tank 5. In this case, in the supply of warm water for washing, at the time of supplying the hot water by opening the hot water supply valve 24 during hot water supply time, cold water supply is stopped by closing the water supply valve 22 and only the hot water is supplied to the inside of the washing and dehydrating tank 5. Thus, the temperature of the warm water is brought closer to the temperature suitable for washing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine.

[0002]

2. Description of the Related Art Conventionally, there is a fully automatic washing machine that performs so-called dehydration rinsing, in which the laundry is dehydrated after the laundry is filled with water by pouring water into the laundry dehydration tub. In such a fully automatic washing machine, the water supply time during which water is accumulated from a certain lower water level to an upper water level in the washing / dehydrating tank is measured at the time of water supply for washing in order to make the amount of water injected before dehydration appropriate. From the water supply capacity obtained based on the measured water supply time, the water injection amount for dewatering rinse is determined.

Some fully automatic washing machines can be washed with hot water. In such a fully automatic washing machine, hot water is supplied from a hot water supply facility such as a water heater and at the same time water is supplied from a water supply facility such as a tap water for washing with hot water. Then, when the hot water mixed with the hot water and the water collected in the washing / dehydrating tank reaches a predetermined water level, the supply of each of them is stopped. In such a fully-automatic washing machine capable of washing with hot water, since water and hot water are supplied at the same time, it is not possible to measure the water supply capacity of only water as described above. Therefore, while measuring the water supply capacity, the supply of hot water is stopped and only the water is supplied.

[0004]

However, when only water is supplied during the measurement of the water supply capacity, when water and hot water are supplied at the same time, for example, dehydration rinsing is not performed,
Compared to the case where the water supply capacity is not measured, the proportion of water having a low temperature increases in the hot water stored in the washing / dehydrating tank. As a result, the temperature of warm water may decrease, and the washing effect of hot water washing may decrease.

It is also conceivable to control the temperature of hot water, but the structure becomes complicated. Therefore, an object of the present invention is to solve the technical problem and to provide a fully automatic washing machine capable of dehydrating and rinsing, which has a simple structure and prevents deterioration of the washing effect.

[0006]

In order to achieve the above object, the fully automatic washing machine of the invention according to claim 1 is provided with a washing / dehydrating tub capable of accommodating laundry and washing water and capable of washing, rinsing and dehydrating. A fully automatic washing machine that can perform dehydration rinsing by storing a predetermined amount of wash water in the washing / dehydrating tank, washing the laundry, supplying a predetermined amount of rinsing water to the washing / dehydrating tank, and then dehydrating. In, a water supply means for supplying water into the washing / dehydrating tub, a hot water supplying means for supplying hot water into the washing / dehydrating tub, and a predetermined amount of washing water in the washing / dehydrating tub for washing Water supply and hot water supply execution means for operating both the water supply means and the hot water supply means until it is stored, and a predetermined amount of rinse water is supplied before the predetermined amount of wash water is stored in the washing / dehydrating tank by the operation of the water supply and hot water supply execution means. Of water supply means for the purpose of To measure the water capacity, only the water supply means for operating the water supply means and the operation of the water supply / hot water supply operation means operate the hot water supply means only for a predetermined time before a predetermined amount of wash water is stored in the washing / dehydrating tank. And a hot water supply executing means for controlling the hot water supply.

According to this structure, water is supplied to the washing / dehydrating tank by the water supply executing means and hot water is supplied by the hot water supplying execution means. After that, water and hot water are supplied to the washing / dehydrating tank by the water supply / hot water supply execution means to make a predetermined amount of washing water. At this time, since the hot water supply executing means can supply only the hot water to the washing / dehydrating tank, the proportion of hot water in the wash water stored at the time of washing is higher than that in the case where there is no hot water supply executing means. As a result, it is possible to prevent the temperature of the wash water from decreasing, and it is possible to more effectively wash the laundry with wash water having a temperature closer to the temperature suitable for washing. Then, in dehydration rinsing, a predetermined amount of rinse water is supplied based on the measured water supply capacity, and dehydration rinsing can be appropriately performed.

A fully automatic washing machine according to a second aspect of the present invention is the fully automatic washing machine according to the first aspect, wherein the hot water supply executing means operates only the hot water supply means during the predetermined time. It is characterized in that it is set on the basis of the time for operating the. According to this configuration,
In addition to the effect of the invention according to claim 1, even if the operating time of the water supply means of the water supply executing means changes, the predetermined time in the hot water supply executing means is changed to set the wash water and the hot water to a predetermined ratio. can do. Since the temperature of the wash water is determined according to this ratio and the temperatures of the water and the hot water, it is easy to maintain the temperature of the wash water at a predetermined value. As a result, a stable washing effect can be obtained.

A fully automatic washing machine according to a third aspect of the present invention is the fully automatic washing machine according to the first or second aspect, further comprising setting means for setting whether or not dehydration rinsing is performed. The hot water supply executing means operates when performing dehydration rinsing, and the predetermined time during which the hot water supply executing means operates only the hot water supplying means is set to be substantially equal to the time during which the water supply executing means operates the water supplying means. To do.

According to this configuration, in addition to the operation of the invention according to claim 1 or 2, when supplying the washing water for washing, when performing dehydration rinsing, the time when only the hot water supplying means operates is the water supplying means. Only equal to the time it works, and also
When no dehydration rinsing is performed, both the water supply means and the hot water supply means operate at the same time. Therefore, in either case, the operating time of the hot water supply means is equal to the operating time of the water supply means, so that the ratio of wash water to hot water does not change. The effect can be made equal.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a sectional side view of a schematic configuration of a fully automatic washing machine according to an embodiment of the present invention. In this fully automatic washing machine, hot water is supplied from an external hot water supply facility (not shown) and water is supplied from an external water supply facility (not shown) such as tap water, and washing is performed with hot water and hot water mixed with water. You can wash things.

In FIG. 1, the fully automatic washing machine includes a box-shaped housing 1 and a washing / dewatering tub 5 which is mounted in the housing 1 through a plurality of hanging rods 3 and can store laundry and washing water. I have it. The washing / dehydrating tub 5 is rotatably provided in the outer tub 5b and the outer tub 5b, and has a large number of small holes 5a on its surface.
And an inner tank 5c having Further, a disc-shaped pulsator 7 rotatably provided on the inner bottom portion of the inner tank 5c and having an uneven top surface, a bearing portion 6 for rotatably supporting the pulsator 7 and the inner tank 5c, and rotational driving A motor 12 as a source is provided. The rotation of the motor 12 is transmitted to the bearing portion 6 via the belt 15, switched by a clutch built in the bearing portion 6, and transmitted to the pulsator 7 and the inner tank 5c. Only the pulsator 7 rotates during washing and rinsing, and the inner tank 5c and the pulsator 7 rotate during dehydration.
Both rotate in one direction at high speed. Further, at the time of supplying water for dehydration rinsing, both the inner tank 5c and the pulsator 7 rotate at a low speed in one direction.

As a water supply means, a water supply pipe 21 is provided in the upper part of the housing 1, one end of which is connected to a water supply facility, and the other end is guided to the upper part of the washing / dehydrating tank 5, and a water supply pipe 21 is provided in the middle thereof. A water supply valve 22 including an electromagnetic valve is provided. When the water supply valve 22 is opened, water is supplied from the water supply facility into the washing / dehydrating tank 5. In addition, as hot water supply means,
A hot water supply pipe 23, one end of which is connected to the hot water supply facility and the other end of which is guided to the upper part of the washing / dehydrating tank 5, and a hot water supply valve 24, which is an electromagnetic valve provided in the middle of the hot water supply pipe 23, are provided. When the hot water supply valve 24 is opened, hot water is supplied from the hot water supply facility into the washing / dehydrating tub 5.

As a drainage means, a drainage pipe 1 having a drainage valve 18 consisting of an electromagnetic valve in the middle of the lower part of the housing 1
7 are provided. One end of the drainage pipe 17 is connected to a drainage port (not shown) formed on the bottom surface of the outer tub 5b, and the other end is led out of the housing 1. As the water level detecting means, a water level sensor 9 fixed to the upper part of the housing 1 and a pressure hose 8 connected from the water level sensor 9 to an air trap 5d provided at one corner of the bottom of the outer tank 5b are provided. When the water level of the washing water in the washing / dehydrating tank 5 rises, the pressure in the air trap 5d rises. By detecting this pressure with the water level sensor 9 via the pressure hose 8, the water level in the washing / dehydrating tub 5 can be detected.

Further, a setting means for allowing the user to give a command for driving, stopping, etc. to the upper part of the housing 1 and various settings as required, for example, whether or not dehydration rinsing is performed. And an operation key 19 and a control unit (not shown) that performs control according to the command. In the control unit, a microcomputer as a control center controls the motor 12, the water supply valve 22, based on the programs and data stored in advance in the ROM, the RAM, the signals from the operation keys 19, the detection result of the water level sensor 9, and the like. Hot water supply valve 2
4 etc. are driven and control is executed. Further, it is possible to measure a water supply time, which will be described later, by the count amount of the counter set on the software.

Next, the control contents of the control unit will be described with reference to the flow chart shown in FIG. In advance, laundry and detergent are put into the washing / dehydrating tank 5. Further, whether or not dehydration rinsing is performed is set by the operation key 19. And
When the operation start command from the operation key 19 arrives at the control unit, the operation is started. First, the drain valve 18 is closed. Further, the water supply valve 22 is opened to start supplying water into the washing / dehydrating tub 5, and at the same time the hot water supply valve 24 is opened to start supplying hot water (step S1). Water and hot water are mixed and stored in the washing / dehydrating tank 5.

In step S2, it is determined whether dehydration rinsing is performed. That is, it is determined by this time whether or not the operation key 19 has been set not to perform dehydration rinsing. If no dehydration rinse is performed,
The processing of step S9 and later described below is performed. On the other hand, when dehydration rinsing is performed, the following steps S3 to S8 are performed.
After the processing of step S9, the processing of step S9 and thereafter is performed.

When dehydration rinsing is performed, in steps S3 and S4, the amount of water supply per unit time is measured as the water supply capacity of the water supply means. That is, first, when the water level sensor 9 detects that the warm water in the washing / dehydrating tank 5 has reached a predetermined lower water level, the hot water supply valve 24 is closed and the supply of hot water is stopped (step S3). At this time, the water supply valve 22 is opened as it is, and only water supply is performed. The water level in the washing / dehydrating tank 5 rises due to the water supplied. When the water level sensor 9 detects that the warm water reaches a predetermined upper water level, the time (water supply time T2) from when the water level sensor 9 detects the lower water level to when it detects the upper water level is measured. (Step S4).

Further, in step S4, at the same time when the water level sensor 9 detects that the hot water reaches a predetermined upper water level, the water supply valve 22 is closed and the water supply is stopped.
Further, the hot water supply valve 24 is opened and hot water supply is started (step S5). Next, the water supply time T measured in step S4
Based on 2, the time for supplying water during dehydration rinsing is determined, and the predetermined time (hot water supply time T3) for performing hot water supply started in step S5 is set (step S5).
6). That is, during the water supply time T2, only the water supply valve 22 is open, the hot water supply valve 24 is closed, and only water is supplied. Therefore, it can be determined that the shorter the water supply time T2, the greater the water supply capacity of the water supply means. Based on this water supply capacity, the time of water supply during dehydration rinsing is determined so that a predetermined amount of water for rinsing is supplied. For example, the larger the water supply capacity, the shorter the time of water supply.

The hot water supply time T3 is set equal to the water supply time T2, for example. Hot water supply valve 24, hot water supply time T3
The hot water is supplied during this period (step S7). At this time, the water supply valve 22 is closed and the water supply is stopped. As described above, in supplying hot water for washing, only hot water is washed in the washing / dehydrating tank 5 in steps S5 and S7.
Since it is supplied inside, the proportion of hot water in the warm water stored at the time of washing is higher than in the conventional case where steps S5 and S7 are not performed. As a result, the temperature of the hot water can be reduced less and the temperature can be brought closer to the temperature suitable for washing, so that the laundry can be washed more effectively.

After the hot water supply time T3 has elapsed, the water supply valve 22 is opened and water supply is started (step S8). Step S
In 9, the supply of water and hot water into the washing / dehydrating tub 5 is continued until the water level sensor 9 detects that the warm water has reached a predetermined water level corresponding to a predetermined washing water amount. When the water level sensor 9 detects a predetermined water level, the water supply valve 22 is closed and the water supply is stopped. At the same time, the hot water supply valve 24
Is also closed, and hot water supply is stopped (step S10).
If dehydration rinsing is not performed, step S1
The water supply and the hot water supply are started at 1, and the water supply and the hot water supply are performed at the same time and then stopped at step S10.

In this way, during the steps S1 to S10, the water supply means and the hot water supply means are operated so that the washing / dehydrating tub 5 can be operated.
A predetermined amount of wash water can be stored inside. When performing dehydration rinsing, the time during which only the hot water supply means operates (hot water supply time T3) is the time during which only the water supply means operates (water supply time T
Since it is equal to 2), the total time the hot water supply means operates is equal to the total time the water supply means operates. Further, when the dehydration rinsing is not performed, both the water supply means and the hot water supply means always operate at the same time, so the total operating time of the hot water supply means is
It is equal to the total time the water supply means operates. In either case, the total time the hot water supply means operates is equal to the total time the water supply means operates, so the proportion of hot water to hot water does not change,
The temperature of hot water can be kept constant at a value according to the water temperature and hot water temperature. Therefore, the washing effect of hot water washing in the next step S11 can be maintained constant.

Next, a washing process is performed under predetermined conditions (step S11). Since hot water and water are mixed and warm water is stored in the washing / dehydrating tank 5, hot water is washed and effective washing is performed. After the washing process is completed, the water is drained and the rinsing process of steps S13 to S15 is performed.

First, in step S12, it is determined whether dehydration rinsing is performed as in step S2. When performing dehydration rinsing, the water supply valve 22 is opened and water is supplied at the water supply time determined in step S6, and a predetermined amount of rinsing water is poured. Meanwhile, the inner tub 5c and the pulsator 7 are slowly rotated so that the entire laundry is impregnated with water. After that, the inner tank 5c and the pulsator 7 are rotated at a high speed for a predetermined time to perform dehydration rinsing (step S13). In this way, dewatering rinsing can be properly performed with a predetermined amount of rinsing water. Therefore, the amount of water is small, the effect of dehydration and rinsing is not sufficient, and the amount of water is larger than necessary and the water is not wasted.

After the completion of the dehydration rinsing, the rinsing water stored to a predetermined water level is rinsed and rinsed for a predetermined time (step S15). When the dehydration rinsing is not performed, the pooled rinsing similar to step S15 is repeated a predetermined number of times, for example, twice (steps S14 and S15). In addition,
In steps S14 and S15, instead of the accumulated rinsing, running water rinsing for rinsing may be performed while supplying water into the washing / dehydrating tub 5. Further, the number of times such as dehydration rinsing and pool rinsing may be plural times.

Finally, dehydration is performed (step S1).
6), all steps are completed. By the way, in this fully automatic washing machine, the total water supply time and hot water supply time are equal, so compared to when they differ, washing is performed according to the water temperature, hot water temperature, hot water supply capacity, water supply capacity, etc. supplied from the hot water supply equipment. The temperature of hot water at that time can be easily set to an appropriate temperature. In addition,
The hot water supply time may be increased or decreased depending on the hot water temperature, hot water supply ability, and the like. Further, the hot water supply time may be increased or decreased according to the amount of laundry. For example, the hot water supply time may be extended as the amount of laundry increases. In this case, it is possible to compensate for the temperature of the hot water, which tends to decrease as the amount of laundry increases, and to obtain a stable washing effect regardless of the amount of laundry.

Therefore, when the above-mentioned equipment for setting water supply and hot water supply can be used, it is suitable as a fully automatic washing machine for business use, for example, used at a coin landry store. Note that this fully automatic washing machine is not limited to business use, and may be used for general household use. In this way, compared to when detecting and controlling the temperature of hot water,
With a simple structure, it is possible to prevent the water temperature from dropping when washing with hot water.

Further, in step S6, the hot water supply time T3 is set based on the water supply time T2. Therefore, even when the water supply time T2 changes, such as when the water supply capacity is different, the hot water supply time T3 is changed accordingly. be able to. Therefore, compared with the case where the hot water supply time T3 is constant, it is easier to maintain the ratio of hot water to hot water at a predetermined value. As a result, the temperature of the hot water is easily maintained at a predetermined value, and a stable washing effect can be obtained.

Further, in step S6, the hot water supply time T3 is set to be equal to the water supply time T2, so that the hot water supply means operates at the time of supplying hot water before washing regardless of the presence or absence of dehydration rinse as described above. The total time is equal to the total time the water supply means operates. Therefore, the ratio of water to hot water and the temperature of the wash water can be made constant regardless of the presence or absence of dehydration rinsing, and the washing effect of hot water washing can be kept constant.

The method of measuring the water supply capacity in the embodiment of the present invention is not limited to the method of steps S3-4. The effect of the present invention can be obtained when the water supply capacity is measured from the relationship between the water level change of the water accumulated in the washing and dewatering tank 5 and the time required for the water level change. For example, the water supply capacity can be measured by measuring the water level change corresponding to a predetermined water supply time. In this case,
Since the water supply time T2 is constant, the hot water supply time T3 can be set in advance and simple control can be performed.

The hot water supply time T3 is set equal to the water supply time T2, but the invention is not limited to this. For example, the shorter the water supply time T2, the shorter the hot water supply time T3 may be set proportionally. In this case, when the ratio of hot water supply capacity to water supply capacity changes as the water supply time T2 changes, the control can be adapted to hot water supply equipment and water supply equipment.

Further, in order to measure the water supply capacity of the water supply means for the purpose of supplying a predetermined amount of rinsing water, step S3, which is a water supply execution process in which only the water supply means is operated, and only the hot water supply means for a predetermined time. Steps S5 and 7 of the hot water supply execution process to be operated are, after the step S1 in which water supply and hot water supply are performed, in other words, until a predetermined amount of wash water is stored in the washing / dehydrating tank 5, the water supply means and the water supply means. Step S, which is a water supply / hot water supply execution process for operating both
Although it was executed in the middle of 1 to 9, it is not limited to this. For example, the water supply / hot water supply execution process may be performed after the water supply / hot water supply execution process. In this case,
Step S1 is not executed. If dehydration rinsing is not performed after step S2, hot water supply and water supply are started in the same manner as in step S1 described above, and then the processing from step S9 is performed. When dehydration rinsing is performed after step S2, the water supply valve 22 is opened to start water supply in step S3, and in step S4 and thereafter, the upper water level is detected as the water supply time T2 from the start of water supply. The time until is measured, and the others are performed as described above.

In addition, various design changes can be made without changing the gist of the present invention.

[0034]

According to the invention of claim 1, since the hot water supply executing means can supply only hot water to the washing / dehydrating tank,
The proportion of hot water in the wash water stored at the time of washing is higher than that in the case where there is no hot water supply execution means, and it is possible to prevent the temperature of the wash water from decreasing. As a result, it is possible to more effectively wash the laundry with wash water having a temperature closer to the temperature suitable for washing. Further, dehydration rinsing can be appropriately performed with a predetermined amount of rinsing water. Further, a sensor or the like is not required to obtain such an effect, and the structure can be simple.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, even if the time for which the water supply execution means operates the water supply means changes, the wash water and hot water are kept at a predetermined level. Therefore, it is easy to maintain the temperature of the washing water at a predetermined value. As a result, a stable washing effect can be obtained. According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the time during which the hot water supply means operates is the time during which the water supply means operates whether or not dehydration rinsing is performed. Therefore, the ratio of the washing water to the hot water does not change, and the temperature of the washing water and the washing effect can be made equal.

[Brief description of the drawings]

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

FIG. 2 is a flowchart of a control unit.

[Explanation of symbols]

 5 Washing / dehydrating tank 19 Operation keys (setting means) 22 Water supply valve (water supply means) 24 Hot water supply valve (hot water supply means) Step S3 Water supply execution means Step S5, 7 Hot water supply execution means Steps S1, 8, 9 Water supply Hot water supply execution means

Claims (3)

[Claims] 1. A washing / dehydrating tank capable of storing laundry and washing water, capable of washing, rinsing, and dehydrating, storing a predetermined amount of washing water in the washing / dehydrating tank, washing the laundry, and washing / dewatering. In a fully automatic washing machine that can perform dehydration rinsing in which a specified amount of water is supplied to the tub and then dehydrated, a water supply means for supplying water to the washing / dehydrating tub and hot water in the washing / dehydrating tub The hot water supply means for supplying water, the water supply hot water supply execution means for operating both the water supply means and the hot water supply means until a predetermined amount of wash water is stored in the washing / dehydrating tank for washing, and the water supply hot water supply execution means. Before the predetermined amount of wash water is stored in the washing / dehydrating tank by the operation, the water supply execution means for operating only the water supply means for the purpose of measuring the water supply capacity of the water supply means for the purpose of supplying a predetermined amount of rinse water And water supply Before the predetermined amount of washing water is accumulated by the operation of the row unit to the washing and dewatering the water tank, a predetermined time, automatic washing machine, characterized in that a hot water supply executing means for operating only the hot water supply means. 2. The fully automatic washing machine according to claim 1, wherein the predetermined time period during which the hot water supply execution means operates only the hot water supply means is set based on the time during which the water supply execution means operates only the water supply means. Fully automatic washing machine. 3. The fully automatic washing machine according to claim 1 or 2, further comprising setting means for setting whether or not to perform dewatering rinse, wherein the water supply executing means and the hot water supply executing means perform dewatering rinse. The fully automatic washing machine is characterized in that the predetermined time during which the hot water supply executing means operates only the hot water supply means is set substantially equal to the time during which the water supply executing means operates the water supply means.