JP2005334412A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine where rinsing performance is improved with a small amount of water. <P>SOLUTION: The washing machine is provided with: a driving means 36 for rotating an agitation blade 35; a washing water supplying means 39 for supplying washing water or rinsing water to laundry articles in a washing and spin-drying tub 34; and a control means 47 for controlling the operation of the driving means 36 and the washing water supplying means 39. By the control means 47, a water quantity for flowing and rinsing supplied by the washing water supplying means 39 is set to be smaller than a water quantity to be supplied for accumulating washing water in an outer tub 33, so that the rinsing water is permeated to the laundry articles without excess or shortage to efficiently remove detergent from the laundry article to improve the rinsing performance with the small amount of water. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a washing machine for washing clothes and the like.

  Conventionally, there are three types of rinsing in a washing machine, which are roughly classified into so-called pool rinsing, water pouring rinsing and flush rinsing. Reservoir rinsing involves rinsing by pouring a predetermined amount of water into the washing and dewatering tub and then stopping the water pouring and rotating the stirring blades. In the water rinsing, water is continuously poured even after a predetermined amount of water has been poured into the washing / dehydrating tub, and rinsing is performed by rotating the stirring blade while discharging a part of the water in the washing / dehydrating tub (for example, Patent Document 1). On the other hand, in rinsing, water is poured to such an extent that the entire laundry soaks the water, and after the pouring is stopped, the washing and dewatering tank is rotated at a high speed to perform dehydration. In the rinse rinse, the detergent water penetrating the laundry is spun off together with the water by dehydration, and is quickly removed, so that a sufficient amount of rinse performance can be obtained with a smaller amount of water compared to a pool rinse or a water injection rinse. .

  Moreover, in the rinse rinse, a difference in rinsing performance is likely to occur between the laundry present in the location directly exposed to the water poured in the washing and dewatering tub and the laundry present in other locations, and rinsing is likely to be uneven. Therefore, in order to suppress rinsing irregularities, water is sprayed from the water inlet into the washing / dehydrating tub in a shower-like manner, and the washing / dehydrating tub is slowly rotated even during pouring, so that water is evenly distributed throughout the laundry. I am trying to win.

  However, the water does not evenly fall on the laundry by itself, and the rinsing unevenness is not sufficiently eliminated. This type of washing machine has a water channel having water injection holes at appropriate intervals for pouring water supplied from the outside into the washing / dehydrating tub over the entire circumference in the vicinity of the upper end of the washing / dehydrating tub or the outer tub. It is characterized by providing.

FIG. 13 shows the overall structure of a conventional washing machine. As shown in FIG. 13, a water channel 4 is provided on the inner peripheral wall 2 at the upper end of the outer tub 1 so as to protrude above the washing and dewatering tub 3, and water injection holes 5 are formed at appropriate intervals on the lower surface of the water channel 4. 4 is provided with a water receiving part 6 for receiving water supplied from the outside, and when water is poured into the water receiving part 6, the water flows into the water channel 4 and is washed and removed from the water injection hole 5. Pour into the tank 3. For this reason, the laundry 7 in the washing and dewatering tub 3 is configured such that water falls uniformly on the laundry 7 in such a manner that the water falls in a shower shape from the entire periphery.
JP-A-7-1637779

  However, in the conventional configuration, water is poured almost uniformly from the entire circumference of the upper part of the washing / dehydrating tub, so that water is evenly distributed to the laundry located anywhere in the washing / dehydrating tub. When the flow rate of water injection is large, the amount of water that only flows on the surface of the laundry and does not permeate increases, and a certain amount of water is required to ensure the rinsing performance.

  An object of the present invention is to solve the above-described conventional problems, and to provide a washing machine with improved performance of rinsing with a small amount of water.

  In order to solve the conventional problems, a washing machine of the present invention includes a driving unit that rotates a stirring blade, a washing water supply unit that supplies washing water or rinsing water to the laundry in the washing and dewatering tub, Drive means and control means for controlling the operation of the washing water supply means, wherein the control means supplies the amount of water supplied by the washing water supply means at the time of rinsing and the amount of water supplied when the washing water is stored in the outer tub. Is set less.

  As a result, the time for supplying the rinse water is shortened, the rinse water does not exceed the amount of water that the laundry can absorb, and there is no water flowing off the surface of the laundry, so the rinse water penetrates into the laundry without excess or deficiency. In addition, the detergent can be efficiently removed from the laundry, and the rinsing performance can be improved with a small amount of rinsing water.

  The washing machine of the present invention can improve the rinsing performance with a small amount of rinsing water.

  A first aspect of the present invention is a washing and dewatering tub provided rotatably in an outer tub, an agitation blade provided inside the washing and dehydration tub, and a drive for rotating the washing and dewatering tub and the stirring wing Means for supplying washing water or rinsing water to the laundry in the washing / dehydrating tub, and control means for controlling the operation of the driving means and the washing water supply means. Since the amount of water at the time of rinsing supplied by the washing water supply means is set smaller than the amount of water supplied when the washing water is stored in the outer tub, the time for supplying the rinsing water is shortened. However, the amount of water that can be absorbed by the laundry is not exceeded, there is no water flowing off the surface of the laundry, the rinse water penetrates into the laundry without excess and deficiency, and the detergent can be efficiently removed from the laundry. Rinse with rinse water It is possible to improve the performance.

  According to the second invention, in particular, the control means of the first invention drives the washing water supply means intermittently at the time of rinsing, so that the rinsing water penetrates into the laundry, dissolves the detergent, and flows out. After that, the next rinsing water is supplied, the detergent can be efficiently removed from the laundry, and the rinsing performance can be improved with a small amount of rinsing water.

  In the third invention, in particular, the washing water supply means of the first invention is provided with a flow rate adjusting unit, and the flow rate adjusting unit has a flow rate of water at the time of rinsing less than a flow rate at the time of storing water in the outer tub. As a result, the rinse water is slowly supplied to the laundry, so that there is no water flowing off the surface of the laundry, the rinse water sufficiently penetrates into the laundry, and the detergent is efficiently removed from the laundry. Can be improved with a small amount of rinse water.

  In the fourth invention, in particular, the washing water supply means of the first invention has a washing water supply part and a rinsing water supply part so that the flow rate of the rinsing water is smaller than the flow rate of the washing water. Since the rinse water is slowly supplied to the laundry, there is no water flowing off the surface of the laundry, so that the rinse water sufficiently penetrates into the laundry, and the detergent can be efficiently removed from the laundry. Rinsing with water can improve performance.

  In the fifth aspect of the invention, in particular, the rinsing water supply unit is provided around the opening of the outer tub of the first to fourth aspects of the invention, and the rinsing water is supplied to the laundry from the periphery of the opening. Since it is supplied to the laundry slowly and evenly, the rinsing performance can be further improved and the rinsing time can be shortened.

  A sixth invention includes a washing / dehydrating tub rotatably provided in an outer tub, a stirring blade provided in the washing / dehydrating tub, and a drive for rotating the washing / dehydrating tub and the stirring wing. Means for supplying washing water or rinsing water to the laundry in the washing / dehydrating tub, and control means for controlling the operation of the driving means and the washing water supply means. Since the agitating blades are driven before the rinsing process, the laundry that is in close contact with each other is loosened by dehydration, and the rinsing water in the next rinsing process easily penetrates, further improving the rinsing performance. And rinse water can be reduced.

  In the seventh aspect of the invention, in particular, since the control means of the sixth aspect of the invention drives the stirring blade during the rinsing process, the rinsing water is more likely to penetrate into the laundry, thereby improving the rinsing performance. be able to.

  In the eighth invention, in particular, the control means of the sixth invention repeats the driving of the stirring blade and the supply of the rinsing water during the rinsing process, so that the rinsing water that has permeated the laundry is efficiently cleaned. Then, the next rinsing water is supplied and the detergent can be more efficiently removed from the laundry, and the rinsing performance can be improved with a small amount of rinsing water.

  In the ninth aspect of the invention, in particular, the control means of the first to eighth aspects of the invention is configured such that the washing and dewatering tub is rotated at a high speed after a predetermined time has elapsed after the rinsing water is supplied. It is dehydrated after being sufficiently dissolved in the detergent, so that the detergent can be completely removed from the laundry, and the rinsing performance can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a sectional view of a washing machine according to the first embodiment of the present invention. FIG. 2 shows a block diagram of the washing machine. In FIG. 1, the washing machine outer frame 31 suspends an outer tub 33 by four suspension bars 32. A washing / dehydrating tub (hereinafter referred to as a washing tub) 34 is rotatably disposed in the outer tub 33, and a stirring blade 35 is rotatably disposed at the bottom of the washing tub 34. The motor (driving means) 36 is composed of a brushless DC motor and is controlled by an inverter so that the rotational speed can be freely changed. Then, the stirring blade 35 and the washing tub 34 are driven via the speed reduction mechanism 38. The washing water supply means 39 supplies water into the washing tub 34, and the water level detection means 40 detects the washing water level in the outer casing 33. The drainage means 41 drains the washing water in the outer tub 33.

  The control device 46 is provided on the back surface of the washing machine body 31. The control device 46 is configured as shown in FIG. 2, and the control means 47 performs washing, rinsing and dehydration based on the setting contents inputted by the operation display means 48 provided on the upper surface of the washing machine body 31. The process is sequentially controlled, and the motor 36, the washing water supply means 39, the drainage means 41 and the like are sequentially controlled via the power switching means 49. The storage unit 50 stores data necessary for sequential control by the control unit 47. The cloth amount detection means 51 detects the amount of laundry (clothing) in the washing tub 34 and inputs its output to the control means 47. A power switch 52 and a commercial power source 53 are connected as shown in FIG.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, the laundry is put into the washing tub 34, and the operation display means 48 is operated to start operation. After the washing process is completed, the control means 47 opens the draining means 41 and drains the washing water. The post-drainage control means 47 rotates the washing tub 34 at high speed to perform dehydration. In the next rinsing process, the control means 47 operates the washing water supply means 39 to supply the washing water into the washing tub 34, and rotates the washing tub 34 at a very low speed (30r / min) to rinse the laundry. Are supplied evenly.

  The drainage means 41 remains open, and the water supplied to the laundry dissolves the detergent and is discharged. The time for supplying the rinsing water is determined by the signal of the cloth amount detecting means 51, and is long when the laundry is large and short when the laundry is small, both of which are the time necessary for accumulating water in the outer tub 33. Is a sufficiently short time. For example, with a standard laundry volume, the supply time is approximately 30 seconds and the water volume is approximately 5 liters supplied to the laundry. After the water supply, the control means 47 rotates the washing tub 34 at high speed to separate the rinse water in which the detergent is dissolved from the laundry. This rinsing process is performed twice to improve the rinsing performance.

  As described above, since the time for supplying the rinsing water is shortened, the rinsing water does not exceed the amount of water that can be absorbed by the laundry, and there is no water flowing off the surface of the laundry. It can permeate without washing and can efficiently remove the detergent from the laundry, and can improve the rinsing performance with a small amount of rinsing water.

(Embodiment 2)
FIG. 3 shows an operation timing chart of the washing machine in the second embodiment of the present invention. In FIG. 3, the washing water supply means 39 is intermittently driven at the time of rinsing, so that the rinsing water penetrates into the laundry, dissolves the detergent, and flows out, and then the next rinsing water is supplied. Thus, the excessive rinse water is eliminated, so that the detergent can be more efficiently removed from the laundry, and the rinse performance can be improved with a small amount of rinse water.

(Embodiment 3)
FIG. 4 shows a cross-sectional view of a washing machine in the third embodiment of the present invention. In FIG. 4, the washing water supply means 39 is provided with a flow rate adjusting unit 45 including a needle valve and an electric motor. The flow rate adjusting unit 45 adjusts the flow rate so that the flow rate of water at the time of rinsing is less than the flow rate when water is accumulated in the outer tub 33. The flow rate is determined by the signal of the cloth amount detection means 51 and is large when there is a lot of laundry and decreases when there is little laundry, but both are sufficiently smaller than the flow rate when water is stored in the outer tub 33. For example, in a standard laundry volume, a flow rate of about 2 liters / minute and a water volume of about 5 liters are supplied to the laundry.

  As a result, since the rinse water is slowly supplied to the laundry, the excess rinse water is not supplied, and there is no water flowing off the surface of the laundry. The detergent can be efficiently removed from the object, and the rinsing performance can be improved with a small amount of rinsing water.

(Embodiment 4)
FIG. 5 shows a cross-sectional view of a washing machine in the fourth embodiment of the present invention. In FIG. 5, the washing water supply means 39 includes a washing water supply unit 54 and a rinsing water supply unit 55 connected to the switching valve 39a. A difference is provided in the cross-sectional area of each bottle so that the flow rate of the rinse water supply unit 55 is smaller than the flow rate of the wash water supply unit 54.

  As a result, since the rinse water is slowly supplied to the laundry, there is no water flowing off the surface of the laundry, the rinse water sufficiently penetrates into the laundry, and the detergent can be efficiently removed from the laundry. Rinsing performance with rinsing water can be improved. Further, since a switching valve is used instead of the needle valve or the electric motor, it can be configured at low cost.

(Embodiment 5)
FIG. 6 is a sectional view of a washing machine according to the fifth embodiment of the present invention. In FIG. 6, a rinse water supply unit 56 is provided in an annular shape around the opening 33 a of the outer tub 33. A plurality of water supply ports 56 a are provided in the rinse water supply unit 56 and are arranged so that water can be supplied to the vicinity of the outer periphery of the washing tub 34.

  Since the rinsing water is supplied to the laundry from the periphery of the opening 33a, the rinsing water is evenly supplied to the laundry, so that the rinsing performance is further improved and the water supply time is shortened by the presence of a plurality of water supply ports 56a. The rinsing time can also be shortened.

(Embodiment 6)
FIG. 7 is a sectional view of the washing machine according to the sixth embodiment of the present invention, FIG. 8 is a block diagram of the washing machine, and FIG. 9 is an operation timing chart of the washing machine. In FIG. 7, the washing machine outer frame 31 suspends the outer tub 33 by four suspension bars 32. A washing / dehydrating tub (hereinafter referred to as a washing tub) 34 is rotatably disposed in the outer tub 33, and a stirring blade 35 is rotatably disposed at the bottom of the washing tub 34. The motor (driving means) 36 is composed of a brushless DC motor and is controlled by an inverter so that the rotational speed can be freely changed. Then, the stirring blade 35 and the washing tub 34 are driven via the speed reduction mechanism 38. The washing water supply means 39 supplies water into the washing tub 34, and the water level detection means 40 detects the washing water level in the outer casing 33. The drainage means 41 drains the washing water in the outer tub 33.

  The control device 46 is provided on the back surface of the washing machine body 31. The control device 46 is configured as shown in FIG. 8, and the control means 47 performs washing, rinsing and dehydration based on the setting contents input by the operation display means 48 provided on the upper surface of the washing machine body 31. The process is sequentially controlled, and the motor 36, the washing water supply means 39, the drainage means 41 and the like are sequentially controlled via the power switching means 49. The storage means 50 stores data necessary for sequential control by the control means 47. The cloth amount detection means 51 detects the amount of laundry (clothing) in the washing tub 34 and inputs its output to the control means 47. A power switch 52 and a commercial power source 53 are connected as shown in FIG.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. First, the laundry is put into the washing tub 34, and the operation display means 48 is operated to start operation. After the washing process is completed, the control means 47 opens the draining means 41 and drains the washing water. The post-drainage control means 47 rotates the washing tub 34 at high speed to perform dehydration. When the dehydration is completed and the rotation of the washing tub 34 is stopped, as shown in FIG. At this time, the laundry compressed by the centrifugal force of dehydration is loosened, and gaps are generated between the laundry and the fiber structure of the laundry. In the next rinsing process, the control means 47 operates the washing water supply means 39 to supply the rinsing water into the washing tub 34 and rotate the washing tub 34 at an extremely low speed (30 r / min) so that the rinsing water is supplied to the laundry. They are supplied evenly. The drainage means 41 remains open, and the water supplied to the laundry dissolves the detergent and is discharged.

  As described above, the laundry that is in close contact with each other is loosened by dehydration, and the rinsing water in the next rinsing process can easily permeate, further improving the rinsing performance and reducing the rinsing water.

(Embodiment 7)
FIG. 10 shows an operation timing chart of the washing machine in the seventh embodiment of the present invention. In FIG. 10, since the control means 47 drives the stirring blade 35 during the rinsing process, the rinsing water can easily penetrate into the laundry, and the rinsing performance can be improved.

(Embodiment 8)
FIG. 11 shows an operation timing chart of the washing machine according to the eighth embodiment of the present invention. In FIG. 11, the control means 47 repeats the driving of the stirring blade 35 and the supply of the rinse water during the rinse process, so that the rinse water that has permeated the laundry efficiently dissolves the detergent and flows out, and then the next rinse. Since water is supplied, the detergent can be more efficiently removed from the laundry, and the rinsing performance can be improved with a small amount of rinsing water.

(Embodiment 9)
FIG. 12 shows an operation timing chart of the washing machine according to the ninth embodiment of the present invention. In FIG. 12, by rotating the washing tub 34 at a high speed after a predetermined time has passed after the rinsing water is supplied, the detergent is sufficiently dissolved in the rinsing water and then dehydrated, so that the detergent is completely removed from the laundry. It can be removed and the rinsing performance can be improved.

  As described above, since the washing machine according to the present invention can improve the rinsing performance with a small amount of water, it can be applied to water saving such as washing other than clothing.

Sectional drawing of the washing machine in Embodiment 1 of this invention Block diagram of the washing machine Operation timing chart of washing machine in embodiment 2 of the present invention Sectional drawing of the washing machine in Embodiment 3 of this invention Sectional drawing of the washing machine in Embodiment 4 of this invention Sectional drawing of the washing machine in Embodiment 5 of this invention Sectional drawing of the washing machine in Embodiment 6 of this invention Block diagram of the washing machine Operation timing chart of the washing machine Operation timing chart of washing machine in embodiment 7 of the present invention Operation timing chart of washing machine in embodiment 8 of the present invention Operation timing chart of washing machine in embodiment 9 of the present invention Cross section of a conventional washing machine

Explanation of symbols

33 Outer tub 34 Washing / dehydration tub 35 Stirring blade 36 Drive means 39 Washing water supply means 45 Flow rate adjusting unit 47 Control means 54 Washing water supply part 55 Rinsing water supply part 56 Rinsing water supply part

Claims (9)

A washing and dewatering tub rotatably provided in the outer tub, a stirring blade provided inside the washing and dewatering tub, a driving means for rotating the washing and dewatering tub and the stirring wing, and the washing and washing Washing water supply means for supplying washing water or rinsing water to the laundry in the dewatering tub, and control means for controlling the operation of the drive means and the washing water supply means, the control means comprising the washing water supply A washing machine in which the amount of water supplied by means of rinsing is set smaller than the amount of water supplied when washing water is stored in the outer tub. 2. The washing machine according to claim 1, wherein the control means drives the washing water supply means intermittently during rinsing. The washing machine according to claim 1, wherein a flow rate adjusting unit is provided in the washing water supply means, and the flow rate adjusting unit is configured such that the flow rate of water when rinsing is less than the flow rate when water is accumulated in the outer tub. The washing machine according to claim 1, wherein the washing water supply means includes a washing water supply unit and a rinsing water supply unit, wherein a flow rate of the rinsing water is smaller than a flow rate of the washing water. The washing machine according to any one of claims 1 to 4, wherein a rinsing water supply unit is provided around the opening of the outer tub, and the rinsing water is supplied to the laundry from the periphery of the opening. A washing and dewatering tub rotatably provided in the outer tub, a stirring blade provided inside the washing and dewatering tub, a driving means for rotating the washing and dewatering tub and the stirring wing, and the washing and washing Washing water supply means for supplying washing water or rinsing water to the laundry in the dewatering basin, and control means for controlling the operation of the drive means and the washing water supply means, the control means before the rinsing process A washing machine configured to drive the stirring blade. The washing machine according to claim 6, wherein the control means drives the stirring blade during the rinsing process. 7. The washing machine according to claim 6, wherein the control means repeats driving of the stirring blade and supply of rinse water during the rinsing process. The washing machine according to any one of claims 1 to 8, wherein the control means rotates the washing and dewatering tub at a high speed after a predetermined time has elapsed after the rinsing water is supplied.

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