JP2014213010A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine which achieves improvement of detergency and decrease in washing unevenness by pouring a washing liquid of a strong water flow on the entire laundry equally.SOLUTION: A washing machine includes: an outer tub; a washing/dewatering tub disposed inside the outer tank in a rotatable manner; an agitation blade disposed inside at the inner bottom of the washing/dewatering tub in a rotatable manner; driving means for rotationally driving the agitation blade and the washing/dewatering tub; water supply means for supplying water to the inside of the outer tub; control means for controlling the driving means and the water supply means; and circulation passage members for spraying water from an opening part by raising washing water at the bottom of the washing/dewatering tub. Three or more of the circulation passage members are provided in a circumferential direction in different places, and the washing water sprayed from the opening part of each circulation passage member is made to dive under the washing water sprayed from the opening part of one of the other circulation passage members.

Description

  The present invention relates to a fully automatic washing machine used in general households and a washing / drying machine provided with a drying function, and in particular, when washing and rinsing, the pumping action leads the lower part of the washing and dewatering tank to the upper part, The present invention relates to a washing machine that performs washing by discharging guided washing water.

  In recent years, resource saving by water-saving and detergent-saving has been strongly demanded as a demand for customers of fully automatic washing machines, and realizing it has become a very important issue. In order to achieve the object, conventionally, a stirring blade provided on the bottom surface of the washing and dewatering tub is rotatably disposed, and a plurality of circulation water channels are independently formed up to the upper portion of the washing and dewatering tub. It has been proposed that the washing liquid is raised through this circulating water channel by the rotation of the back blade provided on the back surface of the bottle and poured into the washing and dewatering tub from the upper opening.

  For example, in Patent Document 1 below, in order to prevent detergent liquid from splashing due to interference between shower liquids, washing liquids discharged from shower nozzles provided at positions facing each other are overlapped with each other when viewed from above in the vertical direction. It describes how to disperse and spray so that it does not become.

JP 2012-157410 A

  However, in the structure described in Patent Document 1, since the shower of detergent liquid is only from two opposite directions, the spraying range of the shower is actually limited, and water is evenly sprayed on the laundry in the washing and dewatering tub. Is difficult. In addition, strong water flow acts on the laundry at the shower landing point and the washing power is increased. However, the water flow is weak at places other than such landing point, and the cause of washing unevenness is caused by a decrease in local washing power. It was.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a washing machine that uniformly pours a strong water-like washing liquid over the entire laundry, thereby improving the washing power and reducing washing unevenness. There is.

  An outer tub, a washing and dewatering tub rotatably disposed in the outer tub, an agitating blade rotatably disposed on an inner bottom of the washing and dewatering tub, the agitation wing and the washing and demounting Drive means for rotationally driving the water tub, water supply means for supplying water into the outer tub, control means for controlling the drive means and the water supply means, and opening the wash water at the bottom of the washing and dewatering tub In a washing machine including a circulation flow path member for sprinkling water from the section, three or more circulation flow path members are provided in different circumferential directions, and the wash water sprayed from the opening of each circulation flow path member is: It sinks under the washing water sprinkled from the opening part of any other circulation flow path member.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the washing machine which poured the washing | cleaning liquid of the strong water flow uniformly to the whole laundry, and implement | achieved the improvement of a cleaning power and the reduction of washing unevenness.

It is a figure which shows the internal structure of the fully automatic washing machine of embodiment of this invention. It is a figure which shows the main cross section of the washing and dewatering tank and the stirring blade which concern on embodiment of this invention. It is a figure which shows the circulation flow path member in the fully automatic washing machine which concerns on embodiment of this invention. It is a figure which shows the structure of the back surface of the circulation flow path member in the fully automatic washing machine which concerns on embodiment of this invention. It is the top view which showed the state of the washing | cleaning liquid discharged in the washing and dehydration tank which concerns on embodiment of this invention.

  Hereinafter, examples according to embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing an internal configuration of a fully automatic washing machine 1 according to the embodiment of the present invention.

  A washing machine, in particular a fully automatic washing machine, is made of a synthetic resin in which a washing and dewatering tub 3 is rotatably placed in an outer frame 5 made of steel by a suspension rod 8 and a vibration isolator 4 made of a coil spring or elastic rubber. The outer tub 6 is suspended. A synthetic resin upper surface cover 9 provided with a control unit 7 as control means and an electromagnetic water supply valve 8 as water supply means is provided at the upper part of the outer frame 5, and a base member made of synthetic resin is provided at the lower part of the outer frame 5. 10

  Hereinafter, the detail of each member mentioned above is demonstrated.

  As shown in FIG. 1, the fully automatic washing machine 1 has an outer frame 5 made of a substantially box-shaped steel plate containing an internal mechanism, and a base member 10 made of synthetic resin at the lower part of the outer frame 5. Four leg portions 10a are fitted and inserted into the four corners, and the main body of the fully automatic washing machine 1 is supported in direct contact with the floor surface. At the rear part of the base member 10, a hose outlet 11 a for drawing out the drain hose 11 is provided.

  A top cover 9 made of a synthetic resin is attached to the upper part of the outer frame 5, and a laundry input port 9 a for taking in and out the laundry 12 is provided at the center of the top cover 9. A lid 9b for opening and closing the insertion port 9a is provided. The electrical components included in the upper surface cover 9 are provided at two locations on the front side and the rear side of the upper surface cover 9, and a front protective cover 9c is mounted on the front rear surface, and a rear protective cover 9d is mounted on the rear rear surface. . In a space formed by the upper surface cover 9 and the front protective cover 9c, a power switch 13, an input switch unit 14 for operating each process such as washing, a progress display unit 14a for displaying the progress of each process, etc. Is housed.

  In a space portion formed by the upper surface cover 9 and the rear protective cover 9d, there are a control unit 7 as a control means, a pressure-sensitive water level sensor 15 for detecting the water level, and an electromagnetic water supply valve 16 for supplying washing water to the outer tub 6. Etc. are stored. The control unit 7 may be arranged either in the space constituted by the front protective cover 9c or in the space constituted by the rear protective cover 9d. Further, a water supply hose 17 connected to a water tap is provided outside the rear portion of the top cover 9, and the other end is connected to an electromagnetic water supply valve 16.

  The front protective cover 9c and the rear protective cover 9d provided on the back surface are attached from the surface of the top cover 9, and are provided on the member to which the power switch 13 and the input switch part 14 are attached from the front surface. The structure may be sufficient. The upper surface cover 9 is fixed to the outer frame 5 from above or from the side with screws 9e via the front protective cover 9c and the rear protective cover 9d on the upper part of the outer frame 5 so as to cover the upper opening of the outer frame 5. ing.

  The outer frame 5 has a bottomed substantially cylindrical outer tub 6 for storing washing water. The outer tub 6 is made up of a suspension bar 8 suspended from the upper end of the outer frame 5 and a coil spring or elastic rubber. The vibration isolator 4 is supported by the vibration isolator 4. The outer tub 6 is formed of a synthetic resin, and an air trap 6a for detecting a water level is formed on the lower wall surface.

  The water level of the washing water in the outer tub 6 is detected from the air trap 6a through the air tube 6b by a pressure-sensitive water level sensor 15 which is a water level detecting means. When performing the washing process or the like, the electromagnetic water supply valve 16 is opened by the command of the control unit 7, and the washing water is supplied into the outer tub 6. When the water level reaches a predetermined level, the water level sensor 15 detects the water level, and the electromagnetic water supply valve 16 is closed according to a command from the control unit 7 to stop water supply.

  A drain valve 17 as a drainage device and a drain hose 11 are provided outside the bottom of the outer tub 6, and the outer tank drain port 6 c and the drain valve 17, and the drain valve 17 and the drain hose 11 are fitted in the bottom of the outer tub 6. Has been. When performing the dehydration process or the like, the drain valve 17 is opened by a command from the control unit 7, and the washing water in the outer tub 6 is drained from the other end of the drain hose 11 to the outside of the fully automatic washing machine 1. The drainage hose 11 has a bellows on its surface and is integrally molded with a synthetic resin.

  In addition, there is a gap between the inner periphery of the outer tub 6 and the outer periphery of the washing / dehydrating tub 3, and in order to prevent the laundry from entering the gap and to maintain the rigidity of the entire outer tub 6, Includes a tank cover 20 that covers the upper surface of the fluid balancer 19 provided in the washing and dewatering tank 3.

  A driving motor 22 and a speed reduction mechanism 24 for reducing the rotational speed of the driving motor 22 are attached to the outside of the bottom of the outer tub 6 via a steel plate mounting base 21. An induction motor or a synchronous motor is used for the drive motor 22. Even if the drive mechanism drives the stirring blade 2 via the V-belt (not shown) and the speed reduction mechanism 24 by the drive motor 22, the drive shaft of the drive motor 22 is on the same axis as the speed reduction mechanism 24. It may be configured as follows.

  An electric operation clutch mechanism 24a and a planetary gear reduction mechanism 24b for switching between a washing operation and a dewatering operation are provided inside the reduction mechanism 24 that reduces the rotational speed. The electric operation clutch mechanism 24a rotates the stirring blade 2 left and right with the washing / dehydrating tub 3 stationary (stirring mode), or rotates the washing / dehydrating tub 3 and the stirring blade 2 integrally in the same direction. (Dehydration mode) can be selected.

  The vibration isolator 4 made of a coil spring or elastic rubber is composed of a suspension rod 8, a suspension rod holder 8a, a sliding cylinder 4c, a vibration isolation spring 4d, a spring receiver 4e, and the like. A suspension rod holder 8 a having a convex spherical surface is fixed to the upper end of the suspension rod 8, and the suspension rod holder 8 a is fitted to the concave spherical surface of a corner plate 5 a provided at the upper four corners of the outer frame 5. . The sliding cylinder 4c has a convex spherical surface so as to be fitted to the concave spherical surface of the sliding cylinder receiver 6d provided in the outer tub 6, and an anti-vibration spring 4d and a spring receiver 4e are provided inside. The vibration of the is suppressed.

  The synthetic resin base member 10 at the lower part of the outer frame 5 is fixed with the outer frame 5 using screws, prevents exposure of the lower end of the steel plate of the outer frame 5 and improves corrosion resistance. By improving the rigidity of the frame 5 as a whole, the full automatic washing machine 1 is protected from an external failure.

  Hereinafter, the washing and dewatering tank 3 according to the present invention will be described with reference to FIG.

  The washing and dewatering tub 3 is formed of a stainless steel plate and has a plurality of dewatering holes 3b for separating and discharging the washing water contained in the laundry 12 from the laundry 12 by centrifugal force on the peripheral wall. A fluid balancer 19 that suppresses vibration of the outer tub 6 due to the bias of the laundry 12 is provided at the upper edge of the trunk portion 3a. ing. Further, a bottom plate 25 having a cross-sectional shape curved upward is fixed to the lower end portion of the body portion 3a and formed into a bottomed cylindrical shape that is long in the axial direction. On the bottom surface of the bottom plate 25, a plurality of water inlets 25a communicating with the outer tub 6 are provided.

  A rotatable stirring blade 2 is provided on the inner peripheral side of the bottom plate 25 at the bottom of the washing and dewatering tub 3. The stirring blade 2 has a large diameter that covers most of the bottom plate 25, is curved upward so that the peripheral edge is pushed up, is formed in a dish shape, and rotates in a state of supporting the laundry 12. It is the composition which does. In addition, on the back surface of the stirring blade 2, back blades 2a are integrally provided radially. Further, the stirring blade 2 has a large number of holes 2b communicating with the front surface and the back surface in curved portions.

  The stirring blade 2 is decelerated by the planetary gear speed reduction mechanism 24b provided in the speed reduction mechanism 24, and the rotation speed of the stirring blade 2 is rotated at 90 to 150 rotations per minute, for example. This agitating blade 2 repeats normal rotation / reverse rotation according to a command from the control unit 7 and performs washing, rinsing, and the like by stirring the laundry 12 in the washing and dewatering tub 3 in a vertical motion.

  As shown in FIG. 3, in this embodiment, four circulation flow path members are provided in the circumferential direction on the inner peripheral surface of the washing and dewatering tub 3. Here, the details of the structure will be described by taking one first circulation flow path member 26 out of the four locations as an example. As shown in FIG. 4, the back surface of the first circulation channel member 26 has a water conduit 26 a integrally provided with synthetic resin, and an independent circulation channel 26 b between the washing and dewatering tub 3. Is forming. In addition, an inlet for allowing the washing liquid to flow into the circulation channel 26b is provided at the lower part of the first circulation channel member 26, and a shower is provided as an outlet of the channel at the upper part of the first circulation channel member 26. An opening 26c for watering is provided.

  Further, a circulation water passage 26 b is provided in communication with a pump chamber 25 b formed on the inner peripheral side of the bottom plate 25 and the outer peripheral side of the back blade 2 a provided on the back surface of the stirring blade 2. Then, the washing liquid is pushed out by the centrifugal force generated by the rotation of the back blade 2a provided on the back side of the stirring blade 2, so that the washing liquid rises through the circulation water channel 26b, and the first circulation channel. The washing liquid is poured intermittently from the opening 26c provided in the upper part of the member 26.

  As shown in FIG. 5, among the circulation flow path members provided at four locations, the first circulation flow path member 26 and the second circulation flow path member 27 are mutually centered around the rotation axis of the washing and dewatering tub 3. The third circulation flow path member 33 and the fourth circulation flow path member 34 are provided at positions that face each other around the rotation axis of the washing and dewatering tub 3. That is, the four circulation flow path members are provided at different positions in the circumferential direction by 90 ° about the rotation axis. The first circulation flow path member 26 and the second circulation flow path member 27 are provided with an opening 26c and an opening 27c at substantially the same height in the upper part thereof, and the washing liquid is supplied to the laundry 12 Used to spray from above. The third circulation flow path member 33 and the fourth circulation flow path member 34 are also provided with the opening 33c and the opening 34c, respectively, at substantially the same height at the top thereof. It is lower than the height of the opening 26 c of the first circulation flow path member 26 and the opening 27 c of the second circulation flow path member 27. By providing openings having different heights in this way, even when the laundry 12 is small and the water level is low, the washing liquid is passed through the third circulation channel member 33 and the fourth circulation channel member 34. You can sprinkle water as a shower. On the other hand, even if there are many clothes and the water level is immersed in water beyond the opening 33c of the third circulation channel member 33 or the opening 34c of the fourth circulation channel member 34, the first circulation channel member 26 and the opening of the second circulation channel member 27 can be sprayed as a shower.

  Next, an operation when the washing liquid flows from the four circulation channels described above toward the washing and dewatering tank 3 will be described.

  First, the laundry 12 is put into the washing / dehydrating tub 3, the power switch 13 is turned on, and a start switch (not shown) provided in the input switch unit 14 is turned on. The water supply valve 16 is controlled to supply water to a predetermined water level, and the washing process is started. When entering the washing process, the driving motor 22 is rotated by being controlled by the control unit 7 in the right rotation / pause / left rotation / pause according to the washing water flow. The controlled rotation of the drive motor 22 is transmitted to the stirring blade 2 via the speed reduction mechanism 24. Accordingly, the stirring blade 2 and the back blade 2a of the stirring blade 2 rotate according to the rotation of the driving motor 22, the laundry 12 and the washing liquid in the washing and dewatering tub 3 are stirred, and the laundry 12 is washed. The

  On the other hand, the washing liquid between the back blade 2a of the stirring blade 2 and the circulation channel member 27 is pushed outward by centrifugal force by the rotation of the back blade 2a according to the rotation of the stirring blade 2, and passes through the circulation water channel 26b. Thus, the water is poured intermittently into the washing and dewatering tub 3 from the opening 26c, the opening 27c, the opening 33c, the opening 34c or the lint filter 28 provided in the circulation water channel 26b. In addition, after the washing liquid pushed out to the circulating water passage 26b by the back blade 2a of the stirring blade 2, new washing is performed from the water inlet 25a leading to the outer tub 6 provided in the bottom plate 25 below the back blade 2a of the stirring blade 2. Liquid is supplied. That is, the washing liquid between the outer tub 6 and the washing / dehydrating tub 3 is supplied, and the liquid level between the outer tub 6 and the washing / dehydrating tub 3 is discharged from the circulation channel member. At the moment of washing, the washing liquid level in the washing and dewatering tank 3 is temporarily lowered. However, since the washing liquid flows into the outer tub 6 from the hole 3b for dehydration of the washing / dehydrating tub 3 and the gap between the washing / dehydrating tub 3 and the stirring blade 2, the difference in liquid level is balanced at a certain value, It becomes constant.

  As described above, the washing liquid is discharged from the washing and dewatering tub 3 through the back blade 2 a of the stirring blade 2, the circulation water channel 26 b, the opening 26 c provided in the circulation water channel 26 b, and the like. Since the detergent solution can be sufficiently permeated into the laundry 12, the washing effect can be greatly enhanced.

  Further, in this embodiment, as shown in FIG. 5, the circumferential center position of the opening at the top of each circulation channel member is all in the same direction with respect to the circumferential center position of each circulation channel member. It is shifted. Thereby, when it sees from the top of a perpendicular direction, the shower discharged from the opening part of each circulation channel member sprinkles water to the area | region biased to one direction with respect to the rotating shaft. As a result, when viewed from above in the vertical direction, the shower sprinkled from the opening of each circulation channel member turns in one direction. And the shower from the opening part of each circulation channel member is sprinkled so that it may sink under the shower from the opening part of the circulation channel member in the 1 downstream of each turning direction. For example, the shower liquid 35 discharged from the opening 33 c of the third circulation flow path member 33 intersects downward at a position upstream of the shower liquid 30 discharged from the opening 26 c of the first circulation flow path member 26. It becomes like this. With such a configuration, even if a plurality of shower liquids are landed substantially simultaneously, it is possible to prevent the washing liquid from scattering due to interference between the shower liquids. Moreover, the water landing point is increased by spraying water from many circulation channels, and the washing liquid in the strong water flow can be uniformly distributed over the entire laundry 12 in the washing and dewatering tub 3. Therefore, washing unevenness is reduced and the washing power is improved. Is feasible.

  Furthermore, the water spray areas of the shower discharged from the opening of the circulation flow path member at the opposite position do not overlap each other. For example, of the opening portion 26 c of the first circulation channel member 26, the end portion 30 a on the side near the center in the circumferential direction of the first circulation channel member 26 and the opening portion 27 c of the second circulation channel member 27. Of these, when divided into two regions divided by a cross section including a straight line 40 connecting the end portion 31b on the side close to the circumferential center of the second circulation flow path member 27, the first circulation region is divided into the first region. The washing liquid is sprayed from the opening 26c of the circulation flow path member 26, and the washing liquid is sprayed from the opening 27c of the second circulation flow path member 27 to the other region. Thereby, even if a shower is sprinkled from the opening part which opposes, it can prevent that a washing liquid collides and jumps.

  In the present embodiment, the opening 33c of the third circulation channel member 33 and the opening 34c of the fourth circulation channel member 34 are connected to the opening 26c of the first circulation channel member 26 and the second It is provided at a position 70 mm lower than the opening 27 c of the circulation flow path member 27. Therefore, the shower liquid 35 discharged from the opening 33c and the shower liquid 36 discharged from the opening 34c seem to sink under the shower liquid 30 discharged from the opening 26c and the shower liquid 31 discharged from the opening 27c. Vomited. For this reason, even if it is a case where the momentum of the shower spread from the opening part of each circulation channel member is strong, it can prevent that a washing liquid collides and jumps. And since each shower liquid spouts toward the downward direction of the water spray locus of any other shower liquid, it is possible to prevent the washing liquid from colliding and jumping even if the water landing point is increased. Therefore, it is possible to increase the water circulation point by increasing the circulation path, and to apply a strong water flow to many laundry items 12, thereby improving the cleaning power and the washing unevenness. In addition, the cleaning power can be improved and the unevenness of washing can be easily reduced by adjusting the amount of circulating water. As a result, water-saving and detergent-free washing machines can be realized.

  Here, as shown in FIG. 4, the circulating water channel 26 b on the back side of the circulation channel member 26 is provided with a rib inclined in one direction, so that the stirring blade 2 rotates clockwise or counterclockwise. , Almost the same watering can be realized.

  As described above, in this embodiment, the washing liquid at the bottom of the washing and dewatering tub 3 is circulated using the rotation of the back blade 2a of the stirring blade 2, and the opening in the upper part of the washing and dewatering tub 3 is circulated from the circulation water channel 26b. Although the method of sprinkling water has been described, a circulation pump may be separately provided so that water can be sprinkled from the opening at the top of the outer tub 6. Further, a circulation channel is formed on the inner peripheral surface of the outer tub 6, and the washing liquid is circulated upward from the washing liquid inlet provided at the lower end of the circulation channel by the centrifugal pump action by the rotation of the back blade 2a. Water may be sprayed from the opening at the top of the circulation channel.

  Furthermore, in the present embodiment, the configuration in which four circulation channels are provided and water is sprayed from the corresponding four openings has been described. However, the present invention is not limited to this, and three circulation channels are provided from the corresponding three openings. The structure which waters or the structure which provides five or more circulation paths and waters from five or more corresponding openings may be used. Even in such a case, water is sprayed so as to sink into a shower sprayed from one of the plurality of openings as seen from above and sprinkled from the opening adjacent to the downstream side in the turning direction. Thus, the same effect as the present embodiment can be achieved.

DESCRIPTION OF SYMBOLS 1 Fully automatic washing machine 2 Stirring blade 3 Washing / dehydration tank 5 Outer frame 12 Laundry 26 1st circulation channel member 27 2nd circulation channel member 33 3rd circulation channel member 34 4th circulation channel Element

Claims (4)

An outer tub, a washing and dewatering tub rotatably disposed in the outer tub, an agitating blade rotatably disposed on an inner bottom of the washing and dewatering tub, the agitation wing and the washing and demounting Drive means for rotationally driving the water tub, water supply means for supplying water into the outer tub, control means for controlling the drive means and the water supply means, and opening the wash water at the bottom of the washing and dewatering tub In the washing machine provided with a circulation channel member for watering from the part,
Three or more circulation flow path members are provided at different locations in the circumferential direction, and the washing water sprayed from the openings of the circulation flow path members is sprinkled from the openings of any of the other circulation flow path members. Washing machine characterized by being submerged under washing water. An outer tub, a washing and dewatering tub rotatably installed in the outer tub, a stirring blade rotatably installed in the inner bottom of the washing and dewatering tub, and a lower portion of the stirring wing A back blade, a driving means for rotationally driving the stirring blade and the washing / dehydrating tub, a water supply means for supplying water into the outer tub, a control means for controlling the driving means and the water supplying means, and the washing In the washing machine provided with a circulation channel member for raising the washing water at the bottom of the dewatering tank and sprinkling water from the opening,
Three or more circulation flow path members are provided on the inner peripheral surface at different locations in the circumferential direction of the washing and dewatering tub, and the circulation flow path member is at a position where the opening is high. The opening is at a low position,
A washing machine characterized in that by rotating the back blade, the washing water is sprinkled from the opening at the lower position toward the lower side of the water spray locus of the washing water sprayed from the opening at the higher position. In claim 1 or 2,
When viewed from above in the vertical direction, the washing water is sprinkled in a direction swirling in one direction from the opening of each circulation flow path member, and the opening of the circulation flow path member that is one downstream in the swiveling direction. The washing machine is characterized in that the washing water is sprinkled from the opening of each circulation channel member so as to sink under the washing water sprinkled from. In any one of Claims 1 thru | or 3,
The washing liquid flowing in from each opening turns in the same direction as the rotation direction of the stirring blade as viewed from above in the vertical direction.