JP2017144108A - washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine capable of continuing circulation of water in a configuration in which an object to be washed is washed by circulating water so as to pass an inner tub in which the object to be washed is housed.SOLUTION: The washing machine 1 includes an outer tub 3, an inner tub 4, a rotary member 8, a supply passage 25 and an outflow passage 15. In the outer tub 3, water is stored in a first inner space 11 surrounded by a first bottom wall 3A and a first peripheral wall 3B. In the inner tub 4, an object to be washed Q is housed in a second inner space 12 surrounded by a second bottom wall 4A arranged on an upper side Z1 of the first bottom wall 3A and a second peripheral wall 4B surrounded by the first peripheral wall 3B. The rotary member 8 is arranged on the upper side Z1 of the second bottom wall 4A. When the rotary member 8 is rotated, surrounding water flows in a direction of separating from a rotation axis J of the rotary member 8 and is supplied to a washing region 16 at the upper side Z1 of the rotary member 8 through the supply passage 25. The outflow passage 15 allows water in the washing region 16 to flow out to a rotary member 8 side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a washing machine.

  The washing machine of Patent Document 1 includes an outer tub that is a water storage tank, an inner tub disposed in the outer tub, a pumping path provided in a side portion of the inner tub, and a pumping water disposed in a lower portion of the inner tub. Including wings. A number of dewatering holes are formed in almost the entire area of the peripheral side of the inner tank, and a water inlet is formed in the center of the bottom of the inner tank. The pumping channel has a water inlet at the lower end and a water outlet at the top. The pump blade has a number of pump blades on its lower surface. The water inlet faces the pump blade from the lower side, and the water inlet faces the pump blade from the side. When the pumping blade is driven to rotate, the pumping blade sucks the washing water in the gap between the outer tub and the inner tub from the water intake port by the pump blade, raises the inside of the pumping channel from the water inlet, and moves from the water outlet to the inner side. Discharge into the tank. The washing power of the laundry can be improved by applying a large amount of washing water to the laundry in the inner tub.

JP 2006-223638 A

  In the washing machine of patent document 1, the water discharged in the inner tank from the outlet of the pumping channel flows out into the gap between the outer tank and the inner tank through the dewatering hole of the inner tank. Therefore, while the pump blade is driven to rotate, water circulates between the gap and the inner tank. In this configuration, when the discharge amount of water discharged from the pumping path into the inner tank by the pump blade exceeds the outflow amount of water flowing out from the dewatering hole of the inner tank into the gap, the water in the gap disappears. It becomes difficult to continue the water circulation. If the circulation of water is not continued, the amount of water dripped into the laundry in the inner tub will be reduced due to the circulation, and the cleaning power will be reduced, or air noise will be generated in the water circulation path, resulting in a loud noise. Or

  The present invention has been made under such background, and in a configuration in which water is circulated through an inner tank in which the object to be cleaned is accommodated to wash the object to be cleaned, water circulation can be continued. An object of the present invention is to provide a washing machine that can be used.

  The present invention includes a first bottom wall, an annular first peripheral wall rising from the first bottom wall, and a first internal space surrounded by the first bottom wall and the first peripheral wall, An outer tub in which water is stored in one internal space, a second bottom wall disposed above the first bottom wall, and an annular second peripheral wall rising from the second bottom wall and surrounded by the first peripheral wall And a second inner space surrounded by the second bottom wall and the second peripheral wall, and a through hole for allowing water to flow back and forth between the outer tub and the second bottom wall and the second peripheral wall. An inner tub formed in a peripheral wall, in which an object to be cleaned is accommodated in the second internal space, and a rotating member disposed on the upper side of the second bottom wall in the second internal space; A rotating member that flows water in a direction away from the rotation axis of the rotating member; and A supply path for supplying water flowing in a direction away from the rotation axis by rolling to a cleaning region in the second internal space where a cleaning object is disposed above the rotating member; and the through hole in the second bottom wall And an outflow passage that is provided separately from the outlet and allows water in the cleaning region to flow out toward the rotating member.

  In addition, the present invention is characterized in that it includes a blocking part provided on the second bottom wall and blocking between the supply path and the outflow path.

  Further, the present invention includes a guide channel that extends upward from the outflow passage in the cleaning region, and includes a guide channel that has an intake port for taking in water in the cleaning region. To do.

  In addition, the present invention includes a filter member provided at the intake port.

  In addition, the present invention includes a guide portion formed on the second bottom wall and guiding water flowing through the outflow path to the rotating member.

According to the present invention, in the outer tub, water is stored in the first inner space surrounded by the first bottom wall and the annular first peripheral wall, and in the inner tub, the first tank disposed above the first bottom wall. The object to be cleaned is accommodated in the second internal space surrounded by the two bottom walls and the annular second peripheral wall. Since water can flow back and forth between the inner tub and the outer tub through the through holes formed in the second bottom wall and the second peripheral wall, when water is stored in the first inner space, water also flows into the second inner space. The water collects in the gap between the first bottom wall and the second bottom wall, and the water also collects in the gap between the first peripheral wall and the second peripheral wall.
When the rotating member disposed on the upper side of the second bottom wall rotates in the second internal space, water around the rotating member flows in a direction away from the rotation axis of the rotating member, and the rotating member in the second internal space is supplied by the supply path. To the upper cleaning area. For example, the water supplied to the cleaning region flows out through the through hole of the second peripheral wall into the gap between the first peripheral wall and the second peripheral wall, and then flows down to the gap between the first bottom wall and the second bottom wall. It returns to the periphery of the rotating member through the through hole in the second bottom wall. Thereby, during rotation of the rotating member, water around the rotating member circulates so as to return to the periphery of the rotating member after rising to the cleaning region. The water that circulates in this way is bathed in the object to be cleaned when passing through the cleaning region, and contributes to the cleaning of the object to be cleaned.
An outflow path provided separately from the through hole in the second bottom wall allows the water in the cleaning region to flow out to the rotating member side. Thereby, since the water of a washing | cleaning area | region can be actively sent to the rotation member side via an outflow channel, it can suppress that the water around a rotation member reduces. Therefore, since the rotating member that is rotating can continue to flow the surrounding water to the supply path, the supply path can continue to supply water to the cleaning region. Therefore, water circulation can be continued.

  Further, according to the present invention, since the blocking portion provided on the second bottom wall blocks between the supply path and the outflow path, the water flowing through the supply path may leak into the outflow path before reaching the cleaning region. The water flowing through the outflow path is prevented from leaking into the supply path before flowing out to the rotating member side. Accordingly, water can be allowed to flow to the destination without leakage in each of the supply path and the outflow path, so that water circulation can be reliably continued.

Further, according to the present invention, the guide channel extending upward from the outflow channel in the cleaning region takes in the water in the cleaning region from the upper intake port, so that the water taken into the guide channel is guided by the guide channel. It flows down the road and flows into the outflow path. In this case, since the intake port for taking in the water of the cleaning region into the outflow path can be arranged away from the cleaning target in the cleaning region, the intake port is not easily blocked by the cleaning target. As a result, the water in the cleaning region can be taken into the outflow path from the intake port via the guide flow path without interruption, and can continue to flow out to the rotating member side through the outflow path. Therefore, the water circulation can be reliably continued.
In addition, since the intake port is located in the upper part of the guide flow path, foreign matter such as dust in the cleaning region does not easily enter the intake port. Therefore, it is possible to widen the intake port, the guide channel, and the outflow channel without considering the entry of foreign matter. Therefore, since a large amount of water from the washing region can be taken in from the intake port and circulated through the guide channel and the outflow channel, the water circulation efficiency can be improved.

  Moreover, according to this invention, the foreign material in a washing | cleaning area | region can be captured with the filter member provided in the intake port. As a result, the intake port can be widened without considering the entry of foreign matter. Therefore, since a large amount of water from the cleaning region can be taken in from the intake port and circulated through the guide channel and the outflow channel, the water circulation efficiency can be further increased.

  Further, according to the present invention, the guide portion formed on the second bottom wall guides the water flowing through the outflow path to the rotating member, so that it is possible to further suppress the reduction of the water around the rotating member. Therefore, since the rotating member that is rotating can continue to flow the surrounding water to the supply path with certainty, the circulation of water can be reliably continued.

FIG. 1 is a longitudinal sectional view of the internal structure of a washing machine according to an embodiment of the present invention. FIG. 2 is a plan view of the internal structure of the washing machine. FIG. 3 is a vertical cross-sectional view of the internal structure of the cleaning machine according to the modification.

  Below, with reference to drawings, cleaning machine 1 concerning an embodiment of this invention is explained concretely. The cleaning machine 1 is a device for cleaning the cleaning object Q. An example of the cleaning object Q is laundry such as clothes, and the cleaning machine 1 in this case is a washing machine. Another example of the cleaning object Q is fruit or vegetable. The cleaning machine 1 may have a function of drying the cleaning object Q.

  FIG. 1 is a longitudinal sectional view of the internal structure of the washing machine 1. First, the outline | summary of the washing machine 1 is demonstrated on the basis of the up-down direction Z in FIG. Of the vertical direction Z, which is the vertical direction, the upper side is referred to as the upper side Z1, and the lower side is referred to as the lower side Z2. The cleaning machine 1 includes a box-shaped housing (not shown), an outer tub 3 disposed in the housing, an inner tub 4 rotatable in the outer tub 3, and an inner tub 4. It includes a partition member 5, a pumping member 6, a guide member 7 and a rotating member 8, and a motor 9 that rotates the inner tank 4 and the rotating member 8.

  The outer tub 3 is made of, for example, resin, and is formed in a bottomed cylindrical shape having a central axis extending in the vertical direction Z. The outer tub 3 has a disk-shaped first bottom wall 3A having a thickness direction substantially coincident with the vertical direction Z, and an annular shape rising from the outer peripheral portion of the first bottom wall 3A to the upper side Z1, more specifically, an annular first 1 circumferential wall 3B. The first bottom wall 3A and the first peripheral wall 3B are coaxially connected, and the outer tub 3 is formed with a substantially cylindrical first internal space 11 surrounded by the first bottom wall 3A and the first peripheral wall 3B. The The first internal space 11 is in a state exposed to the upper side Z1 by a circular opening 3C defined by the upper end of the first peripheral wall 3B. The opening 3C is opened and closed by a cover (not shown) connected to the upper end of the first peripheral wall 3B. In the first internal space 11, water such as tap water, bath water, and a liquid in which a detergent is dissolved is stored from the first bottom wall 3A side.

  The inner tank 4 has a central axis extending in the vertical direction Z and is formed in a bottomed cylindrical shape that is slightly smaller than the outer tank 3. That is, the inner tank 4 is in a vertically arranged state. The inner tank 4 has a disk-shaped second bottom wall 4A having a thickness direction substantially coincident with the vertical direction Z, and an annular shape rising from the outer periphery of the second bottom wall 4A to the upper side Z1, more specifically, an annular first 2 circumferential walls 4B. For example, in the second bottom wall 4A, the inner portion 4C close to the central axis is made of metal, the annular outer portion 4D away from the central axis is made of resin, and the outer edge 4E of the outer portion 4D is , Formed in an annular shape protruding to the upper side Z1. Most of the second peripheral wall 4B is made of metal, but the outer edge portion 4E of the resin outer portion 4D may be regarded as the lower end portion of the second peripheral wall 4B. The second bottom wall 4A and the second peripheral wall 4B are connected coaxially. 4A of 2nd bottom walls and the lower end part of 2nd surrounding wall 4B comprise the bottom part of the inner tank 4. As shown in FIG.

  The inner tank 4 is formed with a substantially cylindrical second internal space 12 surrounded by the second bottom wall 4A and the second peripheral wall 4B. The second internal space 12 is exposed to the upper side Z1 by a circular doorway 4F defined by the upper end of the second peripheral wall 4B. The second internal space 12 accommodates the cleaning object Q. The inner tank 4 is accommodated coaxially in the outer tank 3. The inner tub 4 is rotatable around a central axis passing through the circle center. The central axis of the inner tank 4 is referred to as a rotation axis J. Hereinafter, a circumferential direction around the rotation axis J is referred to as a circumferential direction S, and a radial direction around the rotation axis J is referred to as a radial direction R. The circumferential direction S and the radial direction R are both directions along the horizontal direction H. Of the radial direction R, a direction approaching the rotation axis J is referred to as a radial inner side R1, and a direction away from the rotation axis J is referred to as a radial outer side R2.

  In the inner tank 4 accommodated in the outer tank 3, the second bottom wall 4A is disposed on the upper side Z1 of the first bottom wall 3A so as to overlap the first bottom wall 3A in a non-contact manner, and the second peripheral wall 4B is The first peripheral wall 3B is surrounded by the first peripheral wall 3B from the radially outer side R2 in a non-contact state. The entrance / exit 4F communicates with the opening 3C from the lower side Z2, and the opening 3C and the entrance / exit 4F are collectively opened and closed by the cover (not shown). The user of the cleaning machine 1 can put the cleaning object Q into and out of the second internal space 12 of the inner tank 4 through the opened entrance 4F. A plurality of through holes 4G are formed in each of the second bottom wall 4A and the second peripheral wall 4B, and water in the outer tub 3 flows between the outer tub 3 and the inner tub 4 through the through holes 4G. I can come and go. Accordingly, when water is stored in the first internal space 11, water is stored in the second internal space 12 at the same water level L as in the first internal space 11, and the gap between the first bottom wall 3A and the second bottom wall 4A. Water also accumulates in V, and water also accumulates in the gap W between the first peripheral wall 3B and the second peripheral wall 4B. The plurality of through holes 4G formed in the second bottom wall 4A are disposed at positions that are biased toward the radially inner side R1, more specifically, in the circumferential direction S at intervals in the inner portion 4C.

  An annular balancer 13 is attached to the upper end portion of the inner peripheral surface 4H that partitions the second internal space 12 from the radially outer side R2 in the second peripheral wall 4B. The balancer 13 reduces vibrations of the inner tank 4 during rotation, and a liquid for contributing to vibration reduction, such as salt water, is accommodated in the cavity 13A inside the balancer 13.

  On the upper surface portion of the second bottom wall 4A, a concave arrangement region 14 that is recessed by one step toward the lower side Z2 is formed. The arrangement region 14 is a columnar space that is flat in the vertical direction and is coaxial with the second bottom wall 4A. The arrangement | positioning area | region 14 exists in the state enclosed by radial direction outer side R2 by the outer edge part 4E of the outer side part 4D of 2nd surrounding wall 4B.

  In the second bottom wall 4A, an outflow passage 15 is provided at a position different from the through hole 4G, specifically, inside the outer portion 4D. Therefore, at least a part of the outer portion 4D is formed to be hollow. The outflow path 15 extends from the end surface portion of the radially inner side R1 in the outer portion 4D to the radially outer side R2, curves to the upper side Z1 along the outer edge portion 4E of the outer portion 4D, and is exposed to the upper side Z1 from the outer edge portion 4E. The In the outflow path 15, the portion exposed from the outer edge portion 4E to the upper side Z1 is the inlet 15A, and the portion exposed from the end surface portion of the radially inner side R1 to the radially inner side R1 in the outer portion 4D is the outlet 15B. . The outlet 15B is arranged so as to be shifted to the radially outer side R2 with respect to the through hole 4G of the inner portion 4C of the second bottom wall 4A, and is in a state of directly communicating with the arrangement region 14. A plurality of outflow passages 15 may be provided. In that case, the plurality of outflow passages 15 are arranged in the circumferential direction S.

  The partition member 5 is a lid that is formed in a disk shape having a central axis that coincides with the rotational axis J and is flat in the horizontal direction H, and covers the entire area of the arrangement region 14 from the upper side Z1 in the inner tank 4. It is attached. By the partition member 5, the second internal space 12 is in a state of being vertically divided into an arrangement region 14 and a cleaning region 16 on the upper side Z <b> 1 above the arrangement region 14. The arrangement area 14 is a small area that occupies the lower end of the second internal space 12, whereas the cleaning area 16 is an area that occupies most of the second internal space 12, and the cleaning in the second internal space 12 is performed. The object Q is disposed in the cleaning region 16 on the upper side Z1 from the partition member 5.

  A plurality of communication ports 5A are formed at intervals in the circumferential direction S at the outer peripheral portion of the partition member 5 that is away from the rotation axis J (see FIG. 2). Each communication port 5 </ b> A penetrates the outer peripheral portion of the partition member 5 in the vertical direction Z and is in a state where the outer peripheral portion of the arrangement region 14 and the cleaning region 16 are communicated with each other. Each communication port 5A may be provided with a lattice 5B, or a plurality of through holes 5C may be formed on the partition member 5 on the rotation axis J side (see FIG. 2). The above-described inlet 15A of the outflow passage 15 is substantially the same as the communication port 5A in the vertical direction Z, and is disposed so as to face the cleaning region 16 from the lower side Z2 at a position adjacent to the communication port 5A from the radially outer side R2. .

  The pumping member 6 is formed in a bowl shape that bulges in the radial inner side R1 and extends in the vertical direction Z, and in the cleaning region 16, from the radial inner side R1 to the inner peripheral surface 4H of the second peripheral wall 4B of the inner tank 4. It is attached. In addition, the through-hole 4G does not exist in the part which opposes the pumping member 6 in the internal peripheral surface 4H. The upper end of the pumping member 6 is connected to the balancer 13 from the lower side Z2. A plurality of pumping members 6 may be provided. In this case, the plurality of pumping members 6 are arranged in the circumferential direction S. In the pumping member 6, for example, a slit-like discharge port 6 </ b> A extending in the circumferential direction S is formed at the upper end of the side surface on the radially inner side R <b> 1 so as to face the rotational axis J from the radially outer side R <b> 2. A pumping path 17 extending in the vertical direction Z is formed between the pumping member 6 and the inner peripheral surface 4H. The upper end portion of the pumping path 17 is exposed to the radially inner side R1 from the discharge port 6A. The lower end of the pumping channel 17 is referred to as a suction port 17A. The suction port 17 </ b> A is connected from the upper side Z <b> 1 to a portion that is not covered with the partition member 5 in the outer peripheral portion of the arrangement region 14. The above-described inlet 15A of the outflow passage 15 is located on the outer side R2 with respect to the suction port 17A in the radial direction R.

  The guide member 7 is formed in a bowl shape extending in the up-down direction Z similarly to the pumping member 6, and is attached from the radially inner side R <b> 1 to the inner peripheral surface 4 </ b> H of the second peripheral wall 4 </ b> B of the inner tank 4 in the cleaning region 16. . In addition, the through hole 4G does not exist in a portion facing the guide member 7 on the inner peripheral surface 4H. The guide members 7 are provided corresponding to the outflow passages 15 of the second bottom wall 4A of the inner tank 4, and when there are a plurality of outflow passages 15, the same number as the outflow passages 15 are provided and aligned in the circumferential direction S. Be placed. The upper end of the guide member 7 is disposed away from the balancer 13 toward the lower side Z2, and is disposed in the vicinity of the center of the second internal space 12 in the vertical direction Z, specifically at a position slightly shifted from the center to the upper side Z1.

  A guide channel 18 is formed between the guide member 7 and the inner peripheral surface 4H of the inner tank 4. The guide channel 18 is connected to the inlet 15A of the corresponding outflow channel 15 from the upper side Z1 and extends in the cleaning region 16 from the outflow channel 15 to the upper side Z1. Therefore, the inlet 15A is not directly exposed to the cleaning region 16. The upper part of the guide channel 18, specifically the upper end part, is formed as an intake port 18 </ b> A so as to face the rotation axis J from the side surface of the radially inner side R <b> 1 in the guide member 7. 18 A of intakes are set so that it may be arrange | positioned in the lower Z2 rather than the water level L in the 1st internal space 11 in the up-down direction Z from the water level L. The guide member 7 includes a lattice 7A disposed at the intake port 18A.

  A filter unit 19 is provided at the intake port 18A. The filter unit 19 includes a filter member 19A that covers the intake port 18A from the radially inner side R1, and a holding member 19B that holds the filter member 19A. The filter member 19A is composed of a net or a sponge. The holding member 19B is formed in a frame shape having an opening 19C, and is fixed to the guide member 7 in a state where the filter member 19A is held so as to be exposed to the radial inner side R1 from the opening 19C.

  The rotating member 8 is arranged on the upper side Z1 of the second bottom wall 4A in the arrangement region 14 in a non-contact state with respect to both the second bottom wall 4A and the partition member 5 of the inner tank 4. In this case, the outer edge portion 4E provided with the inlet 15A of the outflow passage 15 in the outer portion 4D of the second bottom wall 4A surrounds the rotating member 8 from the radially outer side R2 in a non-contact manner. Further, the cleaning region 16 is disposed on the upper side Z <b> 1 of the rotating member 8 in the disposition region 14. The rotating member 8 has a disk-like top plate portion 20 and a bottom plate portion 21 that are arranged coaxially with the inner tank 4, and a radially outer side R <b> 2 in a state of being laid between the top plate portion 20 and the bottom plate portion 21. And a plurality of blade portions 22 formed in a fin shape extending radially. A circular intake port 21 </ b> A that penetrates the bottom plate part 21 in the vertical direction Z is formed at the center of the circle of the bottom plate part 21. Between the blade portions 22 adjacent to each other in the circumferential direction S, a water channel 23 extending from the intake port 21A to the radially outer side R2 is formed. Each water channel 23 is closed from above and below by the top plate portion 20 and the bottom plate portion 21. The end of the radially outer side R2 in each water channel 23 is an outlet 23A exposed to the radially outer side R2. Note that the bottom plate portion 21 may be omitted.

  In the arrangement region 14, an outer region 14 </ b> A sandwiched from the outer member 4 </ b> E of the outer portion 4 </ b> D of the second bottom wall 4 </ b> D and the rotating member 8 exists in the outer peripheral portion R <b> 2 radially outside the rotating member 8. To do. Each communication port 5A of the partition member 5 and a portion to which the corresponding communication port 5A is connected in the outer region 14A constitute a supply path 25A. The pumping path 17 and the portion where the suction port 17A of the pumping path 17 is connected in the outer region 14A constitute a supply path 25B. The supply path 25A and the supply path 25B may be collectively referred to as the supply path 25.

  The inlet 15A of the outflow passage 15 of the outer portion 4D of the second bottom wall 4A is located on the radially outer side R2 of at least one of the supply passages 25A. A portion of the outer portion 4D that blocks the outflow passage 15 from the upper side Z1 constitutes a blocking portion 4I. The blocking portion 4I is formed in a plate shape that extends substantially horizontally to the radially outer side R2 and then extends to the upper side Z1 while being curved. The portion extending to the upper side Z1 while being curved in the blocking portion 4I is located between the supply path 25A and the portion on the inlet 15A side in the outflow path 15, and the state where the supply path 25A and the outflow path 15 are blocked. It is in.

  A guide portion 4J is formed on the outer portion 4D of the second bottom wall 4A. The guide portion 4J is formed in a plate shape that closes the outflow path 15 from the lower side Z2 as a part of the outer portion 4D. In the guide portion 4J, the upper surface facing the outflow path 15 is formed so as to incline toward the upper side Z1 as it extends toward the radially outer side R2 along the outflow path 15.

  The motor 9 is disposed on the lower side Z <b> 2 of the first bottom wall 3 </ b> A of the outer tub 3 inside the housing (illustrated) of the cleaning machine 1. The output shaft of the motor 9 branches into a tubular first transmission shaft 31 extending to the upper side Z <b> 1 and a second transmission shaft 32 inserted through the first transmission shaft 31 with play. The motor 9 can selectively output a driving force from either the first transmission shaft 31 or the second transmission shaft 32 through a known speed change mechanism 33 or the like.

  The first transmission shaft 31 extends to the upper side Z <b> 1, passes through the circular center portion of the first bottom wall 3 </ b> A, and is connected to the circular center portion of the second bottom wall 4 </ b> A of the inner tank 4. The upper end portion of the first transmission shaft 31 has a flange portion 31A projecting in a bowl shape, and the flange portion 31A is fixed to the inner portion 4C of the second bottom wall 4A from the lower side Z2, whereby the inner tank 4 is connected. When the motor 9 is driven and the driving force is transmitted to the first transmission shaft 31, the inner tank 4 rotates around the rotation axis J. In the second transmission shaft 32, the upper end portion 32 </ b> A that protrudes above the flange portion 31 </ b> A from the upper side Z <b> 1 is inserted from the lower side Z <b> 2 into the intake port 21 </ b> A of the bottom plate portion 21 of the rotating member 8. Fixed to the part. When the motor 9 is driven and the driving force is transmitted to the second transmission shaft 32, the rotating member 8 rotates around the rotation axis J.

  The operation performed in the washing machine 1 includes, for example, a washing process, a rinsing process, and a dehydrating process. The washing step and the rinsing step may be collectively referred to as a washing step. When the washing process is started, water containing detergent is supplied to the second internal space 12 of the inner tub 4 and stored in the outer tub 3 and the inner tub 4. In this state, the motor 9 is driven and the rotating member 8 rotates. While the rotary member 8 is rotating, the inner tank 4 is in a stopped state. In the arrangement region 14, the water existing around the rotary member 8, specifically, the lower side Z <b> 2 of the rotary member 8, as indicated by a solid line arrow, is the intake of the bottom plate portion 21 due to the centrifugal force caused by the rotation of the rotary member 8. It flows into each water channel 23 from 21A, and flows each water channel 23 to radial direction outer side R2. Then, the water existing in the gap V between the first bottom wall 3A of the outer tub 3 and the second bottom wall 4A of the inner tub 4 passes through the through hole 4G of the second bottom wall 4A according to the rotation of the rotating member 8. It is sucked into the arrangement region 14 and flows through each water channel 23 to the radially outer side R2 via the intake port 21A. Thus, the water that has flowed through the respective water passages 23 to the radially outer side R <b> 2 by the rotation of the rotating member 8 flows out from the outlet 23 </ b> A of the water passage 23 and then reaches the respective supply passages 25.

  The water that has reached the supply path 25A is pushed by the subsequent water accompanying the rotation of the rotary member 8, and is supplied so as to be blown out vigorously from the communication port 5A to the cleaning region 16 to the upper side Z1, as indicated by the solid line arrow. Is done. The water that has reached the supply path 25B is pushed by the subsequent water accompanying the rotation of the rotary member 8 and ascends in the supply path 25, that is, in the pumping path 17, as indicated by the solid line arrow. It is supplied so as to blow out vigorously from the discharge port 6A and pour into the cleaning region 16. Thus, a water flow is generated in the cleaning region 16 by the water blown out from the communication port 5A and the discharge port 6A to the cleaning region 16 in accordance with the rotation of the rotating member 8. The water flow is exposed to the object Q to be cleaned in the cleaning region 16 or the object Q is agitated, whereby the object Q to be cleaned is cleaned. Moreover, the dirt of the cleaning object Q is decomposed by the detergent contained in the water.

  The water supplied to the cleaning region 16 flows out through the through hole 4G of the second peripheral wall 4B into the gap W between the first peripheral wall 3B and the second peripheral wall 4B, and as shown by the dashed arrow, the first bottom wall After flowing down to the gap V between 3A and the second bottom wall 4A, it is drawn to the rotating rotating member 8 and returns to the periphery of the rotating member 8 in the arrangement region 14 through the through hole 4G of the second bottom wall 4A. . The water taken into the arrangement region 14 is blown out again from the communication port 5A and the discharge port 6A to the cleaning region 16 through the water channels 23 by the rotation of the rotating member 8. That is, during the rotation of the rotating member 8, the water around the rotating member 8 rises to the cleaning region 16 and then passes through the first path K <b> 1 constituted by the through hole 4 </ b> G, the gap W, and the gap V. As a result, it circulates back around the rotating member 8. When the circulating water passes through the cleaning region 16 of the inner tank 4, it is bathed by the cleaning object Q as described above and contributes to the cleaning of the cleaning object Q.

  However, when the rotation speed of the rotating member 8 is high or the amount of water flowing through each water channel 23 is large, the amount of water blown from the communication port 5A and the discharge port 6A to the cleaning region 16 is reduced to the first path K1. May exceed the amount of water returning to the periphery of the rotating member 8. In this case, the water in the first path K is reduced while the rotating member 8 is rotating. Thereby, the amount of water blown out to the cleaning region 16 is extremely reduced, and in the worst case, the circulation of water may be stopped. Further, there is a possibility that a large noise may be generated due to the occurrence of air biting in the first path K1 or the like. However, it is difficult to ensure a wide first path K1 in order to increase the amount of water returned from the cleaning region 16. In particular, since the inner portion 4C in which the through hole 4G is formed in the second peripheral wall 4B is a component fixed to the flange portion 31A of the first transmission shaft 31, it is necessary to secure a large through hole 4G in the inner portion 4C. There is a limit.

  Therefore, when the water level L in the cleaning region 16 is the same as the intake port 18A of the guide channel 18 or is above the intake port 18A, the water in the cleaning region 16 is indicated by a one-dot chain line arrow. As shown, the filter unit 19 passes through the opening 19C of the holding member 19B, the filter member 19A, and the intake port 18A in order and is taken into the guide channel 18 and flows down the guide channel 18. The water that has flowed down the guide flow path 18 flows into the outflow path 15 from the inlet 15A of the outflow path 15 and flows to the rotating member 8 side while falling along the outflow path 15 as indicated by a one-dot chain line arrow. At that time, the guide portion 4J that blocks the outflow passage 15 from the lower side Z2 in the outer portion 4D of the second bottom wall 4A guides the water flowing through the outflow passage 15 to the rotating member 8 by directing the water to the radially inner side R1. Thus, the water that has flowed out from the cleaning region 16 so as to approach the rotating member 8 side by the outflow passage 15 flows out from the outlet 15B to a portion on the lower side Z2 than the rotating member 8 in the arrangement region 14. Then, the water that has flowed out in this way is blown out again from the communication port 5 </ b> A and the discharge port 6 </ b> A to the cleaning region 16 through the water channels 23 by the rotation of the rotating member 8. That is, during the rotation of the rotating member 8, the water in the second internal space 12 of the inner tank 4 passes through the second path K <b> 2 constituted by the guide flow path 18 and the outflow path 15, thereby It circulates between the cleaning areas 16.

  When such water circulation is repeated for a predetermined time, the rotation of the rotating member 8 is stopped, and the water in the outer tub 3 and the inner tub 4 is discharged from the drainage channel (not shown) connected to the outer tub 3 to the outside of the machine. Drained. Thereby, the washing process is completed. Following the washing process, a rinsing process is started. In the rinsing process, water that does not contain detergent, for example, tap water, is supplied to the second internal space 12 of the inner tank 4 and stored in the outer tank 3 and the inner tank 4. In this state, the motor 9 is driven and the rotating member 8 rotates. Even in the rinsing process, the inner tank 4 is in a stopped state. Due to the rotation of the rotating member 8, the water in the second internal space 12 of the inner tub 4 is blown out from the communication port 5A and the discharge port 6A to the cleaning region 16 to generate a water flow in the cleaning region 16 as in the case of the washing process. However, it circulates between the arrangement | positioning area | region 14 and the washing | cleaning area | region 16 via the 1st path | route K1 and the 2nd path | route K2. The cleaning object Q is rinsed when this water flow is applied to the cleaning object Q in the cleaning region 16 or the cleaning object Q is agitated.

  When such water circulation is repeated for a predetermined time, the rotation of the rotating member 8 is stopped, and the water in the outer tub 3 and the inner tub 4 is drained. This completes the rinsing process. The rinsing process may be repeated multiple times. Subsequent to the rinsing step, the dehydration step is started. In the dehydration process, the motor 9 is driven and only the inner tank 4 rotates at a high speed. Thereby, since centrifugal force acts on the cleaning object Q in the inner tank 4, the cleaning object Q is dehydrated by being pressed against the inner surface of the inner tank 4, that is, the inner peripheral surface 4H of the second peripheral wall 4B. The water that exudes from the cleaning object Q due to dehydration is drained. The dehydration step may be performed immediately after the washing step or immediately after each rinsing step as an intermediate dehydration step. In this case, the dehydration step immediately after the last rinsing step is the final dehydration step. When the final dehydration process is completed, the operation of the washing machine 1 is completed.

  In addition, the washing machine 1 may include a drying unit (not shown) that supplies warm air into the inner tank 4 after the final dehydration step. In this case, the washing machine 1 can execute a drying process of drying the object Q to be cleaned in the inner tank 4 by the warm air of the drying unit. In the drying process, the cleaning object Q in the inner tank 4 is agitated by the rotation of the inner tank 4, so that the entire cleaning object Q can be uniformly exposed to warm air.

  As described above, in the washing machine 1, the outflow passage 15 causes the water in the cleaning region 16 to flow out to the rotating member 8 side during the rotation of the rotating member 8 in the washing process and the rinsing process. Thereby, since the water of the washing | cleaning area | region 16 can be actively and rapidly sent to the rotation member 8 side via the 2nd path | route K2 shorter than the 1st path | route K1, the water around the rotation member 8 reduces. Can be suppressed. Therefore, since the rotating member 8 that is rotating can continue to flow the surrounding water to the supply path 25, the supply path 25 can continue to supply water to the cleaning region 16. Therefore, water circulation can be continued efficiently. Furthermore, since a large amount of water can be circulated by using the two routes of the first route K1 and the second route K2, it is possible to improve the cleaning power by bathing the object to be cleaned in the cleaning region 16 with a large amount of water. Improvements can be made.

  Further, since the blocking portion 4I provided on the second bottom wall 4A blocks between the supply path 25 and the outflow path 15, the water flowing through the supply path 25 leaks into the outflow path 15 before reaching the cleaning region 16. Or the water flowing through the outflow path 15 is prevented from leaking into the supply path 25 before flowing out to the rotating member 8 side. Accordingly, water can be allowed to flow to the destination without leakage in each of the supply path 25 and the outflow path 15, so that the water circulation can be reliably continued.

  Further, since the guide channel 18 extending from the outflow passage 15 to the upper side Z1 in the cleaning region 16 takes in the water in the cleaning region 16 from the upper intake port 18A, the water taken into the guide channel 18 is guided by the guide channel 18. It flows down the flow path 18 and flows into the outflow path 15. In this case, since the intake port 18A for taking the water of the cleaning region 16 into the outflow passage 15 can be arranged away from the cleaning object Q of the cleaning region 16 to the upper side Z1, the cleaning object Q is taken in. It is possible to prevent the intake port 18A from being blocked by sticking to the port 18A. As a result, the water in the cleaning region 16 can be taken into the outflow path 15 from the intake port 18 </ b> A via the guide flow path 18 without interruption, and can continue to flow out to the rotating member 8 side through the outflow path 15. Therefore, the water circulation can be reliably continued.

  In addition, since the intake port 18A is located above the guide channel 18, foreign matter such as dust and lint in the cleaning region 16 does not easily enter the intake port 18A. Furthermore, when water in the cleaning region 16 is taken into the intake port 18A, foreign matters such as dust and lint contained in the water can be captured by the filter member 19A provided in the intake port 18A. Therefore, the intake port 18A, the guide channel 18 and the outflow channel 15 can be widened without considering the entry of foreign matter. Therefore, since a large amount of water from the cleaning region 16 can be taken in and circulated from the intake port 18A to the guide flow path 18 and the outflow path 15, the water circulation efficiency can be improved.

  Moreover, since the guide part 4J formed in the 2nd bottom wall 4A guides the water which flows through the outflow path 15 to the rotating shaft J side of the rotating member 8, it can suppress further that the water around the rotating member 8 reduces. . Therefore, since the rotating member 8 that is rotating can continue to flow the surrounding water to the supply path 25 with certainty, the circulation of water can be reliably continued.

  The second bottom wall 4A may be formed with a through hole 4K that allows the outflow passage 15 to communicate with the gap V between the first bottom wall 3A and the second bottom wall 4A from the upper side Z1. The water flowing from the cleaning region 16 through the outflow passage 15 flows out from the through hole 4K into the gap V as indicated by the two-dot chain line arrow, and then the through hole 4G of the second bottom wall 4A according to the rotation of the rotating member 8. Flows into the arrangement region 14 and is taken into the intake port 21A of the rotating member 8 and flows through each water channel 23 to the radially outer side R2. Also in this case, the outflow path 15 allows the water in the cleaning region 16 to flow out to the rotating member 8 side through the through hole 4K and the gap V. Incidentally, the through hole 4G of the second bottom wall 4A tends to actively suck nearby water into the arrangement region 14, so that the water flowing through the outflow passage 15 is preferentially supplied to the through hole 4G by the guide portion 4J. If it does, it can prevent reliably that the water of the 1st path | route K1 is lose | eliminated during rotation of the rotation member 8. FIG. Note that the through hole 4K may be formed at a midway position between the inlet 15A and the outlet 15B in the outflow passage 15 in the radial direction R. Alternatively, the through hole 4K may be positioned in the radial direction R substantially at the same position as the inlet 15A, that is, directly below the inlet 15A. In this case, the through hole 4K also serves as the outlet 15B, and the guide portion 4J is omitted. May be.

  The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.

  FIG. 3 is a longitudinal sectional view of the internal structure of the cleaning machine 1 according to the modification. In FIG. 3, the same parts as those described above are denoted by the same reference numerals, and description thereof is omitted. In the cleaning machine 1 of the above-described embodiment, the rotating member 8 is formed in a flat shape up and down and is covered from the upper side Z1 by the partition member 5 so as not to contact the cleaning object Q. As in the modification shown in FIG. 3, the rotating member 8 may be a so-called pulsator, and the top plate 20 in this case has a shape raised to the cleaning region 16. In this case, the partition member 5 is omitted, but the supply path 25A described above is formed between the outer peripheral portion of the rotating member 8 and the outer edge portion 4E of the outer portion 4D of the second bottom wall 4A of the inner tank 4. The The supply path 25A and the outflow path 15 are blocked by the blocking section 4I described above.

  The rotating member 8 according to the modification agitates the cleaning object Q by contacting the cleaning object Q while rotating in the cleaning process. At that time, similarly to the above-described embodiment, the water around the rotating member 8 flows to the radially outer side R2 through each water channel 23 of the rotating member 8, and the object Q to be cleaned in the cleaning region 16 from each supply channel 25. (See solid arrow). The water supplied to the cleaning region 16 passes through the first path K1 (see the broken line arrow) constituted by the through hole 4G, the gap W, and the gap V, or between the guide channel 18 and the outflow channel 15. It circulates so that it may return to the circumference | surroundings of the rotation member 8 by passing through the comprised 2nd path | route K2 (refer the arrow of a dashed-dotted line).

  Further, the rotation axis J described above may extend vertically along the vertical direction Z or may be slightly inclined with respect to the vertical direction Z.

DESCRIPTION OF SYMBOLS 1 Washing machine 3 Outer tank 3A 1st bottom wall 3B 1st surrounding wall 4 Inner tank 4A 2nd bottom wall 4B 2nd surrounding wall 4G Through hole 4I Blocking wall 4J Guide part 8 Rotating member 11 1st inside space 12 2nd inside space 15 Outflow path 16 Cleaning area 18 Guide flow path 18A Intake port 19A Filter member 25 Supply path J Rotating axis Q Object to be cleaned R2 Radial outer side Z1 Upper side

Claims (5)

A first bottom wall; an annular first peripheral wall rising from the first bottom wall; and a first internal space surrounded by the first bottom wall and the first peripheral wall; An outer tank where water can be stored;
A second bottom wall disposed above the first bottom wall; an annular second peripheral wall rising from the second bottom wall and surrounded by the first peripheral wall; the second bottom wall and the second peripheral wall A through hole for passing water to and from the outer tub is formed in the second bottom wall and the second peripheral wall, and the second internal space is washed. An inner tank in which the object is stored;
A rotating member disposed on the upper side of the second bottom wall in the second internal space, the rotating member flowing surrounding water in a direction away from the rotation axis of the rotating member by rotating;
A supply path for supplying water flowing in a direction away from the rotation axis due to rotation of the rotating member to a cleaning region in which the object to be cleaned is disposed on the upper side of the rotating member in the second internal space;
A cleaning machine, comprising: an outflow path provided separately from the through hole in the second bottom wall and allowing water in the cleaning area to flow out to the rotating member side.   The washing machine according to claim 1, further comprising a blocking portion provided on the second bottom wall and blocking between the supply path and the outflow path.   The cleaning according to claim 1, further comprising a guide channel extending upward from the outflow path in the cleaning region, the guide channel having an intake port for taking in water in the cleaning region at an upper portion. Machine.   The washing machine according to claim 3, comprising a filter member provided at the intake port.   The washing machine according to any one of claims 1 to 4, further comprising a guide portion formed on the second bottom wall and guiding water flowing through the outflow path to the rotating member.

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