JP2005103180A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine saving water and detergent, and also having an improvement in washing performance. <P>SOLUTION: The washing machine carries out a rotational drive of a washing and spin-drying tub 34 and an agitation blade 35 while being supplied with washing liquid by a washing liquid supplying means 41. Clothes infiltrated with the washing liquid is hereby undergo a mechanical force by agitation as well as centrifugal force for rubbing wash, so that the washing performance is improved even with a small amount of water and detergent. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a washing machine that removes dirt by sprinkling washing liquid on clothes while rotating a washing and dewatering tub.

  Conventionally, this type of washing machine is provided with a washing liquid supply means and a control means, and the control means rotationally drives the washing and dewatering tub in two stages of high speed and low speed, and the number of rotations is changed from high speed rotation to low speed rotation. While being lowered, the washing liquid is supplied to the clothes in the washing and dewatering tub by the washing liquid supply means, and the clothes are discharged at the same time as the washing liquid is supplied to the clothes ( For example, see Patent Document 1).

  FIG. 11 shows a conventional washing machine described in Patent Document 1. In FIG. As shown in FIG. 11, a washing and dewatering tub (hereinafter referred to as a “washing tub”) 4 is rotatably installed in the water receiving tub 3, and a stirring blade 5 is rotatably disposed at the bottom of the washing tub 4. Yes. A motor 6 as a driving means drives the stirring blade 5 and the washing tub 4 via the V belt 7 and the speed reduction mechanism 8. The washing liquid storage tank 9 is provided at the upper part of the outer frame 1 of the washing machine, and is connected via a valve 11 to a watering nozzle 10 for spraying the washing liquid in the washing liquid storage tank 9 into the washing tank 4. The washing liquid storage tank 9, the watering nozzle 10 and the valve 11 form a washing liquid supply means 12.

When the washing tub 4 reaches a predetermined number of revolutions, the valve 11 is opened, and the washing liquid in the washing liquid storage tank 9 is sprinkled from the sprinkling nozzle 10 toward the clothing on the inner side surface of the bottom of the washing tub 4. The washing liquid that has reached the clothes acts on the dirt adhering to the clothes to take in the dirt into the washing liquid, and is discharged through the clothes by centrifugal force. That is, the washing liquid supply for taking in the dirt and the discharging of the washing liquid in which the dirt is taken in are performed almost simultaneously.
Japanese Patent No. 3303521

  However, in the conventional configuration, too much consideration is given to resource saving and energy saving problems such as water saving and detergent saving, and problems such as reduced damage to clothes, and the mechanical force on clothes becomes weak, and sufficient washing performance cannot be secured. Had.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a washing machine that performs water saving and detergent saving and has improved washing performance.

  In order to solve the above-mentioned conventional problems, the washing machine of the present invention rotates the washing and dewatering tub and the stirring blade while supplying the washing liquid by the washing liquid supply means.

  As a result, not only centrifugal force but also mechanical force by stirring is applied to the clothes soaked with the washing liquid, and it is possible to realize the shampoo washing in the state where the washing liquid is soaked.

  The washing machine of the present invention can save water and save detergent and improve washing performance.

  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 the washing liquid to the clothes in the washing / dehydrating tub, and a control means for controlling the operation of the driving means and the washing liquid supply means. Since the washing liquid is supplied by the liquid supply means and the washing / dehydration tank and the stirring blade are rotationally driven so that mechanical force is applied to the clothes, only the centrifugal force is applied to the clothes soaked with the washing liquid. In addition, mechanical force by stirring is also applied, so that the clothes soaked with the washing liquid are squeezed and washed, and water washing and detergent can be performed and washing performance can be improved.

  In the second aspect of the invention, in particular, the control means of the first aspect of the invention supplies the rinsing liquid to the clothes in the washing and dewatering tub by the washing liquid supply means in the storing and rinsing process, By configuring the garment so that mechanical force is applied by rotating it, not only centrifugal force but also mechanical force due to agitation is applied to the garment soaked in rinse water, and the garment soaked in rinse water will be rinsed and washed. Can remove detergent components from clothing with less water.

  In the third invention, in particular, the water surface of the washing liquid of the first invention is below the upper surface of the stirring blade and above the bottom surface of the washing and dewatering tank, so that the clothes are submerged in the washing liquid. Therefore, the wing force does not leave the stirring blade, and the mechanical force due to the rotation of the stirring blade is efficiently transmitted to the clothes, so that it is possible to effectively wash the scum. In addition, since there is a washing liquid above the bottom surface of the washing and dewatering tank, the washing liquid is rolled up by the rotation of the stirring blade, springs from the gap between the washing and dehydrating tank and the stirring blade, and is supplied to the clothing. Further, it is possible to effectively wash the scum.

  In the fourth aspect of the invention, in particular, the control means of the first aspect of the invention is configured so that the washing liquid is supplied to the clothes in the washing and dewatering tub only when the stirring blade is rotated. As the washing liquid is separated from the clothes, the weight of the clothes is reduced and the load on the driving means is reduced. Accordingly, the number of rotations of the washing and dewatering tub increases and the centrifugal force also increases, so that the washing liquid that has taken in dirt in the clothes can be sufficiently separated, and the washing performance can be improved.

  In the fifth invention, in particular, the control means of the first invention is configured to supply the washing liquid to the clothes in the washing / dehydrating tub before or after reaching the maximum rotation of the washing / dehydrating tub. Accordingly, the centrifugal force is strong, the supplied washing liquid passes through the clothes without stopping, and the dirt taken in the washing liquid is also removed from the clothes, so that the washing performance can be improved.

  According to a sixth aspect of the present invention, in particular, the control means of the first aspect of the invention is configured to intermittently supply the washing liquid to the clothes in the washing and dewatering tub during the maximum rotation of the washing and dewatering tub. The washing liquid soaks and becomes heavy, increasing the load on the drive means and reducing the rotation speed of the washing and dehydrating tank. However, the washing liquid is gradually separated from the clothing while the supply of the washing liquid is temporarily stopped. When the load applied to the driving means is reduced and the rotation speed of the washing / dehydrating tub is increased again, the washing liquid is supplied again, and the passing washing can be performed at the high speed of the washing / dehydrating tub. , Washing performance can be improved.

  According to the seventh aspect of the present invention, in particular, a washing liquid chamber for storing washing liquid is provided outside or at the bottom of the outer tub of the first invention. When the washing / dehydrating tub rotates when the washing / dehydrating tub rotates, the washing / dehydrating tub agitates the washing liquid, and the washing liquid becomes foam, which reduces the efficiency of the pump. Since the rotation of the water tank is not hindered, the washing liquid can be supplied and the high speed rotation of the washing and dewatering tank can be secured, so that the washing 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 a first embodiment of the present invention, FIG. 2 is a block circuit diagram of the washing machine, and FIG. 3 is a timing chart of driving means and washing liquid supply means of the washing machine. It is.

  In FIG. 1, the washing machine outer frame 31 suspends an outer tub 33 by four suspension bars 32. The washing / dehydrating tub 34 is rotatably arranged in the outer tub 33, and a stirring blade 35 is rotatably arranged at the bottom of the washing / dehydrating tub 34. The drive means 36 is composed of a brushless DC motor, and is controlled by an inverter so that the rotation speed can be freely changed. Then, the stirring blade 35 and the washing and dewatering tub 34 are driven via the speed reduction mechanism 37. The washing water supply means 38 supplies water into the washing / dehydration tank 34, and the water level detection means 39 detects the washing water level in the outer casing 33. The drainage means 40 drains the washing liquid in the outer tub 33.

  The washing liquid supply means 41 is installed at the upper rear part of the washing machine outer frame 31, and is constituted by an electric pump 41a, a suction pipe 41b, and a watering pipe 41c. The inlet side of the suction pipe 41 b is connected to the bottom of the outer tub 33, and the outlet of the sprinkling pipe 41 c faces the upper part of the washing and dewatering tub 34. The control device 42 is provided on the back surface of the washing machine outer frame 31. The control device 42 is configured as shown in FIG. 2, and the control means 43 performs washing, rinsing and dehydration based on the setting contents input by the operation display means 44 provided on the upper surface of the washing machine outer frame 31. Each process is sequentially controlled, and the drive means 36, the washing liquid supply means 41, the drainage means 40, etc. are sequentially controlled via the power switching means 45.

  The storage means 46 stores data necessary for sequential control by the control means 43. The cloth amount detection means 47 detects the amount of laundry (clothing) in the washing and dewatering tub 34 and inputs its output to the control means 43. As shown in FIG. 3, the control means 43 causes the washing / dehydrating tub 34 and the stirring blade 35 to rotate alternately by the drive means 36. The rotation of the stirring blade 35 is repeated in the reverse direction. While the washing / dehydrating tub 34 and the stirring blade 35 are rotating, the washing liquid supply means 41 is operating, and the washing liquid is continuously supplied to the clothes in the washing / dehydrating tub 34. A power switch 48 and a commercial power source 49 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, clothes and detergent are put into the washing / dehydrating tub 34, and the operation display means 44 is operated to start operation. As a result, the control means 43 operates the washing water supply means 38 and supplies the washing water into the washing and dewatering tub 34. Further, the washing / dehydrating tub 34 is rotated by the driving means 36 via the speed reduction mechanism 37. By this rotation, the detergent and the washing water are mixed to form a washing liquid.

  When the specified water level is reached, a signal is sent from the water level detection means 39 to the control means 43, and the control means 43 stops the washing water supply means 38 and simultaneously activates the washing liquid supply means 41, thereby Supply laundry liquid to clothing. The number of rotations of the washing and dewatering tub 34 is gradually increased, the centrifugal force is also increased, and the washing liquid passes through the clothes, and dirt is taken into the washing liquid during that time. After a predetermined time, the rotation of the washing and dewatering tub 34 is stopped, and then the stirring blade 35 is reversed in the normal direction. During this time, the supply of the washing liquid is continued, and the clothes impregnated with the washing liquid are washed by squeezing by the reverse rotation of the stirring blade 35. After a predetermined time has elapsed, the control means 43 stops the rotation of the stirring blade 35 and rotates the washing / dehydrating tub 34 again. Washing proceeds by repeating this operation.

  As described above, in this embodiment, the washing liquid is supplied by the washing liquid supply means 41 and the washing and dewatering tank 34 and the stirring blade 35 are rotationally driven so that mechanical force is applied to the clothes. As a result, not only centrifugal force but also mechanical force due to agitation is applied to the clothes soaked in the washing liquid, and the clothes soaked in the washing liquid are swabbed and washed efficiently with less washing liquid. This can improve the washing performance.

(Embodiment 2)
FIG. 4 shows a timing chart of the washing machine driving means and the washing liquid supply means in the second embodiment of the present invention. By carrying out the washing process operation in the first embodiment also in the rinsing process 50, not only centrifugal force but also mechanical force by stirring is applied to the clothes soaked in the rinse water, and the clothes soaked in the rinse water are squeezed and washed. Therefore, the detergent component can be removed from the clothes with a small amount of water.

(Embodiment 3)
FIG. 5 shows a sectional view of the washing machine in the third embodiment of the present invention. In FIG. 5, the water surface 51 of the washing liquid is located below the stirring blade upper surface 35 a and above the bottom surface 34 a of the washing and dewatering tub 34.

  According to the above configuration, since the clothes are not submerged in the washing liquid, the mechanical force due to the rotation of the stirring blade 35 is efficiently transmitted to the clothes without being separated from the stirring blade upper surface 35a by buoyancy, and the scouring is effective. Can be done automatically. Further, since the washing liquid is above the bottom surface 34a of the washing / dehydrating tank 34, the washing liquid is wound up by the rotation of the stirring blade 35, and springs out from the gap 52 between the washing / dehydrating tank 34 and the stirring blade 35 and is supplied to the clothes. As a result, it is possible to effectively wash the scum.

(Embodiment 4)
FIG. 6 shows a timing chart of the washing machine driving means and the washing liquid supply means in the fourth embodiment of the present invention. As shown in FIG. 6, the washing liquid is supplied to the clothes in the washing and dewatering tank 34 only when the stirring blades are rotated 35b.

  According to the above configuration, the washing liquid is only separated from the clothing when the washing and dewatering tub 34 is rotated, the weight of the clothing is reduced, and the load applied to the driving means 36 is reduced. Accordingly, the rotational speed of the washing and dewatering tub 34 is increased and the centrifugal force is increased, so that the washing liquid that has taken in dirt in the clothes can be sufficiently separated. Further, since the washing liquid is supplied during the rotation of the stirring blade 35b, there is also an effect of scum washing, and the washing performance can be improved.

(Embodiment 5)
FIG. 7 shows a timing chart of the washing machine driving means and the washing liquid supply means in the fifth embodiment of the present invention. As shown in FIG. 7, the washing liquid is supplied to the clothes in the washing / dehydrating tub 34 before or after the washing / dehydrating tub 34 reaches the maximum rotation.

  According to the above configuration, the centrifugal force is strong, the supplied washing liquid passes through the clothes without stopping, and dirt taken in the washing liquid is also removed from the clothes, thereby improving the washing performance. be able to.

(Embodiment 6)
FIG. 8 is a timing chart of the driving means and the washing liquid supply means of the washing machine in the sixth embodiment of the present invention. As shown in FIG. 8, the washing liquid is intermittently supplied to the clothes in the washing / dehydrating tub 34 during the maximum rotation 34c of the washing / dehydrating tub.

  According to the above configuration, the laundry liquid soaks into the clothes and becomes heavier, the load applied to the driving means 36 increases and the rotational speed of the washing and dewatering tank 34 decreases, but the supply of the laundry liquid temporarily stops. In the meantime, the washing liquid is gradually separated from the clothing, and when the load applied to the driving means 36 is reduced and the rotation speed of the washing / dehydrating tub 34 is increased again, the washing liquid is supplied again. Passing washing can be performed at a high rotational speed, and washing performance can be improved.

(Embodiment 7)
FIG. 9 shows a sectional view of the washing machine in the seventh embodiment of the present invention. In FIG. 9, the washing liquid chamber 53 is installed outside the washing machine outer frame 31. An inlet of the suction pipe 41b is arranged at the washing liquid chamber bottom 53a. The washing liquid supplied to the clothes in the washing / dehydrating tub 34 flows into the washing liquid chamber 53 from the vicinity of the drainage means 40 at the bottom of the outer tub 33.

  According to the above configuration, when the washing liquid does not accumulate in the outer tub 33 and the washing / dehydrating tub 34 rotates, the washing / dehydrating tub 34 agitates the washing liquid, and the washing liquid is foamed so that the efficiency of the pump 41a is increased. It does not decrease or foam of the washing liquid becomes a resistance and does not hinder the rotation of the washing / dehydrating tub 34, so that the supply of the washing liquid and the high-speed rotation of the washing / dehydrating tub 34 can be secured. By the collision between the clothes and the washing liquid, mechanical force is applied to the clothes, and the washing performance can be further improved.

  As shown in FIG. 10, by providing the washing liquid chamber 53 at the bottom of the outer tub 33, the washing liquid chamber 53 can be stored in the dead space in the washing machine outer frame 31, and the washing machine does not become large. .

  As described above, since the washing machine according to the present invention can improve the washing performance even with a small amount of water and a small amount of detergent, it can be applied to a special washing machine using a solvent.

Sectional drawing of the washing machine in Embodiment 1 of this invention Block diagram of the washing machine Timing chart of driving means and washing liquid supply means of the washing machine Timing chart of washing machine driving means and washing liquid supply means in embodiment 2 of the present invention Sectional drawing of the washing machine in Embodiment 3 of this invention Timing chart of washing machine drive means and washing liquid supply means in embodiment 4 of the present invention Timing Chart of Washing Machine Driving Unit and Washing Liquid Supply Unit in Embodiment 5 of the Present Invention Timing chart of washing machine driving means and washing liquid supply means in embodiment 6 of the present invention Sectional drawing of the washing machine in Embodiment 7 of this invention Cross-sectional view of a washing machine of another example Cross section of a conventional washing machine

Explanation of symbols

33 Outer tub 34 Washing / dehydration tub 34a Bottom surface of washing / dehydration tub 34b Maximum rotation of washing / dehydration tub 34c Maximum rotation of washing / dehydration tub 35 Stirring blade 35a Top surface of stirring blade 35b During rotation of stirring blade 36 Driving means 41 Washing Liquid supply means 43 Control means 50 Reservoir rinse process 51 Water surface of washing liquid 53 Washing liquid chamber

Claims (7)

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 liquid supply means for supplying the washing liquid to the clothes in the dewatering tub, control means for controlling the operation of the driving means and the washing liquid supply means, and the control means is configured to wash the washing liquid by the washing liquid supply means. A washing machine configured to apply mechanical force to clothing by rotating the washing and dewatering tank and the stirring blade. The control means supplies the rinsing liquid to the clothes in the washing / dehydrating tub by the washing liquid supply means in the storage rinsing process, and applies mechanical force to the garment by rotating the washing / dehydrating tub and the stirring blade. The washing machine according to claim 1, which is configured as follows. The washing machine according to claim 1, wherein the water level of the washing liquid is below the upper surface of the stirring blade and above the bottom surface of the washing and dewatering tub. 2. The washing machine according to claim 1, wherein the control means is configured to supply the washing liquid to the clothes in the washing and dewatering tank only when the stirring blades are rotated. 2. The washing machine according to claim 1, wherein the control means is configured to supply a washing liquid to clothing in the washing / dehydrating tub before or after reaching the maximum rotation of the washing / dehydrating tub. The washing machine according to claim 1, wherein the control means is configured to intermittently supply the washing liquid to the clothes in the washing / dehydrating tub during the maximum rotation of the washing / dehydrating tub. The washing machine according to claim 1, wherein a washing liquid chamber for storing washing liquid is provided outside or at the bottom of the outer tub, and a washing liquid supply means is installed in the washing liquid chamber.

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