WO2017140259A1

WO2017140259A1 - Cleaning machine

Info

Publication number: WO2017140259A1
Application number: PCT/CN2017/073910
Authority: WO
Inventors: 西浦直人; 田中启之
Original assignee: 青岛海尔洗衣机有限公司; 海尔亚洲株式会社
Priority date: 2016-02-18
Filing date: 2017-02-17
Publication date: 2017-08-24
Also published as: JP6826246B2; CN108431327B; JP2017144108A; CN108431327A

Abstract

Provided is a cleaning machine, capable of causing water to circulate continuously in a structure in a manner in which the water flows through an inner drum accommodating a to-be-cleaned object and cleans the to-be-cleaned object. The cleaning machine (1) comprises: an outer drum (3), an inner drum (4), a rotation member (8), a supply path (25), and an outflow path (15). In the outer drum (3), a first interior space (11) bounded by a first bottom wall (3A) and a first peripheral wall (3B) stores water. In the inner drum (4), the to-be-cleaned object (Q) is accommodated in a second interior space (12) bounded by a second bottom wall (4A) configured as the upper side of the first bottom wall (3A) and a second peripheral wall (4B) enclosed by the first peripheral wall (3B). The rotation member (8) is configured on the upper side (Z1) of the second bottom wall (4A). When the rotation member (8) rotates, the surrounding water flows in the direction of the rotational axis (J) away from the rotation member (8), and is supplied by means of the supply path to a cleaning area (16) on the upper side (Z1) of the rotation member (8). The outflow path (15) causes the water in the cleaning area (16) to flow out toward the rotation member (8).

Description

washing machine

Technical field

The invention relates to a washing machine.

Background technique

The washing machine of Patent Document 1 includes an outer tub as a water storage tub, an inner tub disposed in the outer tub, a water pumping path provided at a side portion of the inner tub, and a water pumping vane disposed at a lower portion of the inner tub. A substantially entire area of the peripheral side portion of the inner tub is formed with a plurality of dewatering holes, and a suction port is formed at the center of the bottom of the inner tub. The lower end of the pumping road has a water inlet and the upper part has a water outlet. The pumping vanes have a number of pumping vanes on their lower surface. The suction port faces the pump vane from the lower side, and the water inlet faces the pump vane from the side. When the pumping blade is rotationally driven, the pumping blade passes through the pumping blade, and the washing water at the gap between the outer tub and the inner tub is extracted from the water suction port, and is lifted from the water inlet in the water pumping path, and discharged from the water outlet into the inner tub. By washing a large amount of washing water onto the laundry in the inner tub, the cleaning power of the laundry can be improved.

In the washing machine of Patent Document 1, the water discharged from the water outlet of the pumping path into the inner tub flows out through the dewatering hole of the inner tub to the gap between the outer tub and the inner tub. Therefore, water is circulated between the gap and the inner tub during the rotational driving of the pump blade. In this configuration, when the discharge amount of the water discharged from the pumping path into the inner tub by the pumping vane exceeds the outflow amount of the water flowing out from the dewatering hole of the inner tub to the gap, the water circulation is difficult to continue because the water of the gap is drained. . When the water circulation is not continued, the amount of water that is circulated to the laundry in the inner tub is reduced, resulting in a decrease in the cleaning power or a large noise due to the circulation of the water.

Prior art literature

Patent literature

Patent Document 1: Japanese Laid-Open Patent Publication No. 2006-223638

Summary of the invention

Problems to be solved by the invention

The present invention is an invention based on the background, and an object thereof is to provide a washing machine capable of The water circulation is continued in a configuration in which water is circulated through the inner tub containing the object to be cleaned and the object to be cleaned is washed.

Solution to solve the problem

The present invention is a washing machine comprising: an outer tub having: a first bottom wall, an annular first peripheral wall rising from the first bottom wall, and the first bottom wall and the first a first internal space enclosed by the peripheral wall, the first internal space can store water; the inner tub has: a second bottom wall disposed on an upper side of the first bottom wall, rising from the second bottom wall and An annular second peripheral wall surrounded by the first peripheral wall, and a second internal space surrounded by the second bottom wall and the second peripheral wall, in the second bottom wall and the second a peripheral wall having a through hole for allowing water to flow back and forth between the inner tub and the outer tub, wherein the second inner space houses a cleaning object; and a rotating member disposed in the second inner space The upper side of the second bottom wall rotates to cause the surrounding water to flow away from the rotation axis of the rotating member; the supply path flows in a direction away from the rotation axis by the rotation of the rotating member Water is supplied to the upper side of the rotating member in the second internal space Washing area arranged cleaning object; and outflow path, disposed on the second bottom wall and separated from the through hole, so that the washing water flows to the region of the rotary member side.

Further, the present invention is characterized in that it includes a partition portion provided in the second bottom wall to isolate the supply path from the outflow path.

Further, the present invention is characterized in that it includes a guiding flow path extending upward from the outflow path in the washing area, and having an intake port for ingesting water in the washing area at an upper portion thereof .

Further, the present invention is characterized in that it comprises a filter member which is provided at the intake opening.

Further, the present invention is characterized in that it includes a guide portion formed on the second bottom wall to guide water flowing through the outflow path to the rotating member.

Effect of the invention

According to the present invention, for the outer tub, the first inner space surrounded by the first bottom wall and the annular first peripheral wall can store water, and for the inner tub, on the upper side of the first bottom wall The second inner wall and the second inner space enclosed by the annular second peripheral wall accommodate the cleaning object. Since the water passes 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 the first inner space stores water, the second inner space also stores water, and the first bottom wall and the first bottom wall The gap between the second bottom wall will also store water, the first week wall and the first The gap between the two walls will also store water.

When the rotating member disposed on the upper side of the second bottom wall in the second internal space rotates, the water around the rotating member flows toward the direction away from the rotational axis of the rotating member, and is passed through the supply path in the second internal space. It is supplied to the cleaning area on the upper side of the rotating member. The water supplied to the washing area flows out to the gap between the first peripheral wall and the second peripheral wall, for example, through the through hole of the second peripheral wall, and flows through the gap between the first bottom wall and the second bottom wall and then passes through the second bottom wall. The hole returns to the periphery of the rotating member. Thereby, during the rotation of the rotating member, the water around the rotating member circulates in such a manner as to rise to the periphery of the rotating member after rising to the washing region. The water thus circulated is dripped onto the cleaning object as it passes through the cleaning area, which contributes to cleaning of the cleaning object.

The outflow path provided separately from the through hole in the second bottom wall causes the water in the washing area to flow out toward the rotating member side. Thereby, since the water in the washing area can be actively fed to the rotating member side via the outflow path, it is possible to suppress the decrease in the water around the rotating member. Therefore, since the rotating member in rotation can continuously flow the surrounding water to the supply path, the supply path can continuously supply water to the washing area. Therefore, the water circulation can be continued.

Further, according to the present invention, since the partition portion provided in the second bottom wall isolates the supply path from the outflow path, it is possible to suppress the water flowing through the supply path from leaking to the outflow path before flowing to the cleaning area, or flowing through The water flowing out of the road leaks to the supply path before flowing out to the side of the rotating member. Thereby, since the water flows in the supply path and the outflow path without leaking before reaching the destination, the water circulation can be reliably continued.

Further, according to the present invention, since the guide flow path extending from the outflow path to the upper side in the washing area is ingested from the intake port of the upper portion thereof, the water taken in by the guide flow path flows down in the guide flow path. And flow into the outflow path. In this case, since the intake port for taking in the water outflow path of the washing area can be disposed so as to deviate upward from the washing target of the washing area, the mouth of the mouth is not easily clogged by the object to be cleaned. Thereby, the water in the washing area can be continuously taken in from the intake port through the guide flow path, and the water can be continuously discharged to the rotating member side through the outflow path. Therefore, the water circulation can be reliably continued.

Further, since the intake port is located at the upper portion of the guide flow path, foreign matter such as garbage in the wash area does not easily enter the intake port. Therefore, it is not necessary to consider the entry of the foreign matter, and the intake port, the guide flow path, and the outflow path can be set to be wide. Therefore, since a large amount of water from the washing area can be taken in from the intake port to guide the flow path and the outflow path and circulate, the water circulation efficiency can be improved.

Further, according to the present invention, foreign matter in the washing area can be caught by the filter member provided at the intake port. Therefore, it is not necessary to consider the entry of the foreign matter, and the intake port can be set to be wide. Therefore, since a large amount of water from the washing area can be taken in from the intake port and the outflow path can be circulated, the water circulation efficiency can be further improved.

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

DRAWINGS

Fig. 1 is a longitudinal sectional view showing an internal structure of a washing machine according to an embodiment of the present invention.

2 is a plan view of the internal structure of the washing machine.

Fig. 3 is a longitudinal sectional view showing the internal structure of a washing machine according to a modification.

detailed description

Hereinafter, the washing machine 1 according to the embodiment of the present invention will be specifically described with reference to the drawings. The washing machine 1 is a device for cleaning the cleaning target Q. An example of the cleaning target Q is laundry such as laundry, and the washing machine 1 at this time is a washing machine. Other examples of the cleaning target Q are fruits, vegetables, and the like. The washing machine 1 can also have the function of drying the cleaning object Q.

FIG. 1 is a longitudinal sectional view showing the internal structure of the washing machine 1. First, the outline of the washing machine 1 will be described based on the vertical direction Z in Fig. 1 . In the vertical direction, that is, the up-and-down direction Z, the upper side is referred to as an upper side Z1, and the lower side is referred to as a lower side Z2. The washing machine 1 includes a casing (not shown) formed in a box shape, an outer tub 3 disposed in the casing, and an inner tub 4 rotatable in the outer tub 3; a partition member 5, a pumping member 6, and a guiding member 7 And the rotating member 8 is disposed in the inner tub 4; and the motor 9 rotates the inner tub 4 and the rotating member 8.

The outer tub 3 is made of, for example, a resin, and is formed into a bottomed cylindrical shape having a central axis extending in the vertical direction Z. The outer tub 3 has a first bottom wall 3A and a first peripheral wall 3B. The first bottom wall 3A has a disk shape having a thickness direction substantially coincident with the vertical direction Z, and the first peripheral wall 3B is from the first bottom. The outer peripheral portion of the wall 3A is formed in an annular shape rising upward from the upper side Z1, and is specifically annular. First bottom wall 3A and first peripheral wall 3B Coaxially connected, a substantially cylindrical first internal space 11 surrounded by the first bottom wall 3A and the first peripheral wall 3B is formed in the outer tub 3. The first internal space 11 is in a state of being exposed from the circular opening portion 3C to the upper side Z1, and the opening portion 3C is drawn 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 portion of the first peripheral wall 3B. The first internal space 11 can store water such as tap water, bath water, and a liquid in which detergent is dissolved from the first bottom wall 3A side.

The inner tub 4 has a central axis extending in the up-and-down direction Z and is formed in a bottomed cylindrical shape that is slightly smaller than the outer tub 3. In other words, the inner tub 4 is in a vertically disposed state. The inner tub 4 has a second bottom wall 4A having a disk shape having a thickness direction substantially coincident with the up-and-down direction Z, and a second peripheral wall 4B being a second bottom wall 4A. The annular shape in which the outer peripheral portion rises toward the upper side Z1 is, in detail, an annular shape. For example, in the second bottom wall 4A, the inner portion 4C which is closer to the central axis thereof is made of metal, and the annular outer portion 4D far from the central axis is made of resin, and the outer edge portion 4E of the outer portion 4D is formed. It is an annular shape that protrudes to the upper side Z1. The second peripheral wall 4B is mainly made of metal, but the outer edge portion 4E of the resin outer portion 4D can 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 coaxially connected. The lower end portions of the second bottom wall 4A and the second peripheral wall 4B constitute the bottom of the inner tub 4.

In the inner tub 4, a substantially cylindrical second inner space 12 surrounded by the second bottom wall 4A and the second peripheral wall 4B is formed. The second internal space 12 is in a state of being exposed from the circular inlet and outlet 4F to the upper side Z1, and the inlet and outlet 4F is drawn by the upper end of the second peripheral wall 4B. The cleaning object Q is housed in the second internal space 12. The inner tub 4 is housed coaxially in the outer tub 3. The inner tub 4 is rotatable about a center axis passing through its center. The central axis of the inner tub 4 is referred to as the rotational axis J. Hereinafter, the circumferential direction around the rotation axis J is referred to as a circumferential direction S, and the radial direction centered on the rotation axis J is referred to as a radial direction R. The circumferential direction S and the radial direction R are both directions in the horizontal direction H. Among the radial directions R, a direction near the rotation axis J is referred to as a radially inner side R1, and a direction away from the rotation axis J is referred to as a radially outer side R2.

In the inner tub 4 housed in the outer tub 3, the second bottom wall 4A is disposed on the upper side Z1 of the first bottom wall 3A so as not to be in contact with the first bottom wall 3A, and the second peripheral wall 4B is in the same manner The state in which the one-wall 3B is not in contact is surrounded by the first peripheral wall 3B from the radially outer side R2. The door 4F communicates with the opening 3C from the lower side Z2, and the opening 3C and the door 4F are opened and closed by the above-described cover (not shown). The user of the washing machine 1 can take out the washing target Q into the second internal space 12 of the inner tub 4 via the opened entrance 4F. A plurality of through holes 4G are formed in the second bottom wall 4A and the second peripheral wall 4B, respectively, and the outer tub 3 The water inside can go back and forth between the outer tub 3 and the inner tub 4 via the through hole 4G. Therefore, when the first internal space 11 stores water, the second internal space 12 also stores water of the same water level L as the first internal space 11, and the gap V between the first bottom wall 3A and the second bottom wall 4A is also stored. There is water, and the gap W between the first peripheral wall 3B and the second peripheral wall 4B also stores water. The plurality of through holes 4G formed in the second bottom wall 4A are disposed at positions radially inward of the inner side R1, and in detail, in the inner portion 4C at intervals in the circumferential direction S.

In the second peripheral wall 4B, an annular balance member 13 is attached to the upper end portion of the inner peripheral surface 4H of the second internal space 12 from the radially outer side R2. The balance member 13 is a member that reduces the vibration of the inner tub 4 at the time of rotation, and the cavity 13A inside the balance member 13 accommodates a liquid that contributes to vibration reduction, such as salt water.

In the upper surface portion of the second bottom wall 4A, a concave arrangement region 14 which is recessed downward from the lower side Z2 is formed. The arrangement area 14 is a vertically flat cylindrical space coaxial with the second bottom wall 4A. The arrangement region 14 is in a state of being surrounded by the outer edge portion 4E of the outer portion 4D of the second peripheral wall 4B from the radially outer side R2.

In the second bottom wall 4A, in the other position different from the through hole 4G, in detail, in the inside of the outer portion 4D, the outflow path 15 is provided. Therefore, at least a portion 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 of the outer portion 4D toward the radially outer side R2, and is bent upward to the upper side Z1 along the outer edge portion 4E of the outer portion 4D, and is exposed from the outer edge portion 4E to the upper side Z1. . 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 of the outer portion 4D toward the radially inner side R1 is the outlet 15B. The outlet 15B is disposed so as to be displaced from the through hole 4G of the inner portion 4C of the second bottom wall 4A toward the radially outer side R2, and is in a state of being in direct communication with the arrangement region 14. A plurality of outflow paths 15 may be provided. In this case, the plurality of outflow paths 15 are arranged side by side in the circumferential direction S.

The partition member 5 is a disk which is formed in a disk shape having a central axis coinciding with the rotation axis J and is flat in the horizontal direction H, and is attached to the inner tub 4 in a state in which the upper side Z1 covers almost the entire area of the arrangement region 14. The second internal space 12 is in a state of being vertically partitioned by the cleaning region 16 of the upper side Z1 of the arrangement region 14 and the arrangement region 14 by the partition member 5. The arrangement area 14 is a small area occupying the lower end portion of the second internal space 12, whereas the cleaning area 16 is an area occupying most of the second internal space 12, and the cleaning object of the second internal space 12 The Q is disposed in the cleaning region 16 of the upper side Z1 of the partition member 5.

In the partition member 5, at a peripheral portion away from the rotation axis J, the plurality of communication ports 5A are along the circumference It is formed in such a manner that S is freed (see Fig. 2). Each of the communication ports 5A is in a state in which the outer peripheral portion of the partition member 5 is penetrated in the vertical direction Z and the outer peripheral portion of the arrangement region 14 communicates with the washing region 16 . In addition, the grid 5B may be provided in each communication port 5A, or a plurality of through-holes 5C may be collectively formed on the rotation axis J side of the partition member 5 (refer FIG. 2). The inlet 15A of the above-described outflow path 15 is disposed in such a manner as to be substantially the same as the communication port 5A in the vertical direction Z, and faces 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 water suction member 6 is formed in a tubular shape that bulges toward the radially inner side R1 and extends in the vertical direction Z, and is attached to the inner circumferential surface 4H of the second peripheral wall 4B of the inner tub 4 from the radially inner side R1 in the cleaning region 16 . In the inner peripheral surface 4H, the through hole 4G is not provided in the portion opposed to the water suction member 6. The upper end of the water suction member 6 is coupled 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 side by side in the circumferential direction S. In the pumping member 6, the slit-shaped discharge port 6A extending in the circumferential direction S at the upper end portion of the side surface of the radially inner side R1 is formed to face the rotation axis J from the radially outer side R2. A pumping path 17 extending in the vertical direction Z is formed between the water suction member 6 and the inner circumferential surface 4H. The upper end portion of the pumping passage 17 is exposed to the radially inner side R1 from the discharge port 6A. The lower end of the pumping path 17 is referred to as a suction port 17A. The suction port 17A is connected from the upper side Z1 to a portion of the outer peripheral portion of the arrangement region 14 that is not covered by the partition member 5. The inlet 15A of the above-described outflow path 15 is located on the outer side R2 of the suction port 17A in the radial direction R.

Similarly to the water suction member 6, the guide member 7 is formed in a tubular shape extending in the vertical direction Z, and is attached to the inner circumferential surface 4H of the second peripheral wall 4B of the inner tub 4 from the radially inner side R1 in the cleaning region 16. In the inner peripheral surface 4H, the through hole 4G is not provided in the portion opposed to the guide member 7. The guide member 7 is provided corresponding to the outflow path 15 of the second bottom wall 4A of the inner tub 4, and when a plurality of outflow paths 15 are present, is disposed in the same number as the outflow path 15 and arranged side by side in the circumferential direction S. The upper end Z2 of the guide member 7 is disposed to be displaced from the balancer 13 and is disposed in the vicinity of the center of the second internal space 12 in the vertical direction Z, and is disposed at a position slightly deviated from the center toward the upper side Z1.

A guide flow path 18 is formed between the guide member 7 and the inner peripheral surface 4H of the inner tub 4. The guide flow path 18 is connected from the upper side Z1 to the inlet 15A of the corresponding outflow path 15, and extends from the outflow path 15 to the upper side Z1 in the washing area 16. Therefore, the inlet 15A is not directly exposed to the cleaning area 16. The upper portion of the guide flow path 18, in detail, the upper end portion is formed as an intake port 18A so as to face the rotation axis J from the side surface of the radially inner side R1 of the guide member 7. The intake port 18A is set as follows: in the up and down direction Z It is disposed at the same position as the water level L of the first internal space 11 or at the lower side Z2 of the water level L. The guiding member 7 includes a grid 7A disposed at the inlet port 18A.

At the intake port 18A, a filter unit 19 is provided. 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 mesh, a sponge, or the like. The holding member 19B is formed in a frame shape having the opening 19C, and is fixed to the guiding member 7 in a state in which the filter member 19A is held so as to be exposed from the opening 19C to the radially inner side R1.

The rotating member 8 is disposed on the upper side Z1 of the second bottom wall 4A in the arrangement region 14 in a state where it is not in contact with both the second bottom wall 4A of the inner tub 4 and the partition member 5. In this case, in the outer portion 4D of the second bottom wall 4A, the outer edge portion 4E of the inlet 15A in which the outflow path 15 is provided surrounds the rotating member 8 from the radially outer side R2 without contact. Further, the cleaning region 16 is disposed on the upper side Z1 of the rotating member 8 in the arrangement region 14. The rotating member 8 has a disk-shaped top plate portion 20 and a bottom plate portion 21, and a plurality of blade portions 22, wherein the top plate portion 20 and the bottom plate portion 21 are coaxially arranged with the inner tub 4, and the plurality of blade portions 22 are formed to be mounted on The state between the top plate portion 20 and the bottom plate portion 21 is fin-shaped radially extending outward in the radial direction R2. A circular intake port 21A penetrating the bottom plate portion 21 in the vertical direction Z is formed in the center portion of the bottom plate portion 21. A water passage 23 extending from the intake port 21A toward the radially outer side R2 is formed between the adjacent blade portions 22 in the circumferential direction S. Each of the water passages 23 is in a state of being blocked up and down by the top plate portion 20 and the bottom plate portion 21. An end portion of each of the water passages 23 on the radially outer side R2 is an outlet 23A that is exposed to the radially outer side R2. It should be noted that the bottom plate portion 21 can be omitted.

In the arrangement region 14, on the outer peripheral portion of the radially outer side R2 of the rotary member 8, there is an outer region 14A in which the outer edge portion 4E of the outer portion 4D of the second bottom wall 4A and the rotary member 8 are sandwiched from the radial direction R. The portion of each of the communication port 5A and the outer region 14A of the partition member 5 to which the corresponding communication port 5A is connected constitutes the supply path 25A. A portion of the pumping path 17 and the outer region 14A to which the suction port 17A of the pumping path 17 is connected constitutes the supply path 25B. It should be noted that the supply path 25A and the supply path 25B may be collectively referred to as a supply path 25.

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

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

The motor 9 is disposed inside the casing (illustration) of the washing machine 1 on the lower side Z2 of the first bottom wall 3A of the outer tub 3. The output shaft of the motor 9 branches off a tubular first transmission shaft 31 extending to the upper side Z1 and a second transmission shaft 32 having a clearance inserted through the first transmission shaft 31. The motor 9 can selectively output the driving force to the first transmission shaft 31 and the second transmission shaft 32 by a known shifting mechanism 33 or the like.

The first transmission shaft 31 extends to the upper side Z1 and penetrates the center of the first bottom wall 3A, and is connected to the center of the second bottom wall 4A of the inner tub 4. The upper end portion of the first transmission shaft 31 has a flange portion 31A that protrudes in a brim shape, and is coupled to the inner tub 4 by fixing the flange portion 31A from the lower side Z2 to the inner portion 4C of the second bottom wall 4A. When the motor 9 is driven and the driving force is transmitted to the first transmission shaft 31, the inner tub 4 is rotated about the rotation axis J. The upper end portion 32A of the second transmission shaft 32 that protrudes toward the upper side Z1 of the flange portion 31A is inserted into the inlet port 21A of the bottom plate portion 21 of the rotary member 8 from the lower side Z2, and is fixed to the center portion of the top plate portion 20. When the motor 9 is driven and the driving force is transmitted to the second transmission shaft 32, the rotating member 8 rotates about the rotation axis J.

The operations performed in the washing machine 1 include, for example, a washing process, a rinsing process, and a dehydrating process. The washing process as well as the rinsing process can be collectively referred to as a washing process. When the washing process is started, the detergent-containing water is supplied to the second internal space 12 of the inner tub 4, and is accumulated in the outer tub 3 and the inner tub 4. In this state, the motor 9 is driven and the rotating member 8 is rotated. During the rotation of the rotating member 8, the inner tub 4 is in a stopped state. In the arrangement area 14 there is a periphery of the rotating member 8, and in detail, water present on the lower side Z2 of the rotating member 8 is shown by a solid arrow, and the centrifugal force by the rotation of the rotating member 8 is taken from the bottom plate portion 21. The inlet 21A flows into each of the water passages 23 and flows through the respective water passages 23 toward the radially outer side R2. Thus, 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 is sucked into the arrangement region 14 from the through hole 4G of the second bottom wall 4A as the rotating member 8 rotates. And, the water channel 23 flows through the intake port 21A to the radially outer side R2. In this way, the water flowing through the water passages 23 to the radially outer side R2 by the rotation of the rotating member 8 flows out from the outlet 23A of the water passage 23, and then reaches the respective supply passages 25.

The water reaching the supply path 25A is pushed by the subsequent water accompanying the rotation of the rotating member 8, thereby As indicated by a solid arrow, it is supplied to the cleaning area 16 so as to be discharged from the communication port 5A to the upper side Z1. The water reaching the supply path 25B is pushed by the subsequent water accompanying the rotation of the rotating member 8, and as shown by the solid arrow, is supplied into the washing area 16 as follows: in the supply path 25, that is, in the pumping path 17, And it is strongly discharged from the discharge port 6A of the water suction member 6, and is injected downward into the washing area 16. By the water discharged from the communication port 5A and the discharge port 6A to the washing area 16 as the rotating member 8 rotates as described above, a water flow is generated in the washing area 16. The water flow is poured onto the cleaning target Q of the cleaning area 16 or the cleaning target Q is stirred, whereby the cleaning target Q is cleaned. Further, the dirt of the cleaning target Q is decomposed by the detergent contained in the water.

The water supplied to the washing area 16 passes through the through hole 4G of the second peripheral wall 4B, flows out to the gap W of the first peripheral wall 3B and the second peripheral wall 4B, and is directed to the first bottom wall 3A and the second as indicated by the arrow of the broken line. After the gap V of the bottom wall 4A flows down, it is driven by the rotating rotating member 8 to return to the periphery of the rotating member 8 of the arrangement region 14 through the through hole 4G of the second bottom wall 4A. The water taken into the arrangement area 14 passes through the rotation of the rotary member 8, passes through the respective water passages 23, and is discharged from the communication port 5A and the discharge port 6A to the cleaning region 16. In other words, during the rotation of the rotary member 8, the water around the rotary member 8 is circulated in the following manner: after rising to the cleaning region 16, by passing through the first route K1 composed of the through hole 4G, the gap W, and the gap V Thereby returning to the periphery of the rotating member 8. When the circulating water passes through the washing area 16 of the inner tub 4, it is dripped onto the cleaning target Q as described above, which contributes to cleaning of the cleaning target Q.

However, as the rotational speed of the rotating member 8 increases or the amount of water flowing through each of the water passages 23 increases, the amount of water discharged from the communication port 5A and the discharge port 6A to the washing region 16 may exceed the amount of water returned to the periphery of the rotating member 8 via the first route K1. . In this case, the water of the first route K is reduced during the rotation of the rotating member 8. Thereby, the amount of water discharged to the washing area 16 is extremely reduced, and in the worst case, the water circulation may be stopped. In addition, it is also possible to generate a large noise due to the intake of the first route K1 or the like. Nevertheless, it is difficult to ensure that the first route K1 is wide in order to increase the amount of water returned from the washing area 16. In particular, since the inner portion 4C of the second peripheral wall 4B in which the through hole 4G is formed is an element fixed to the flange portion 31A of the first transmission shaft 31, the inner portion 4C has a large securing effect of the through hole 4G. limit.

Therefore, in the case where the water level L of the washing area 16 is located at the same position as the intake opening 18A of the guiding flow path 18 or at the upper side Z1 of the intake opening 18A, the water of the washing area 16 is indicated by an arrow of a chain line. , through the opening 19C of the holding member 19B of the filter unit 19, the filter member 19A, and ingestion in order The port 18A is taken up into the guiding flow path 18 and flows downward through the guiding flow path 18. The water flowing downward through the guide flow path 18 flows into the outflow path 15 from the inlet 15A of the outflow path 15 as indicated by the arrow of the dotted line 15, and flows toward the rotating member 8 side while falling along the outflow path 15. At this time, the guide portion 4J that blocks the outflow path 15 from the lower side Z2 in the outer portion 4D of the second bottom wall 4A guides the rotating member 8 toward the radially inner side R1 by the water flowing through the outflow path 15. The water that has flowed out from the cleaning region 16 toward the rotating member 8 side by the outflow path 15 flows out from the outlet 15B to the portion of the arrangement region 14 located on the lower side Z2 of the rotating member 8. Then, the water thus discharged is discharged to the washing area 16 from the communication port 5A and the discharge port 6A through the respective water passages 23 by the rotation of the rotating member 8. In other words, during the rotation of the rotating member 8, the water in the second internal space 12 of the inner tub 4 passes through the second route K2 constituted by the guiding flow path 18 and the outflow path 15, thereby arranging the area 14 and the washing area Circulation between 16.

When such a water cycle is repeated for a predetermined period of time, the rotating member 8 stops rotating, and the water of the outer tub 3 and the inner tub 4 is discharged to the outside of the machine from a drain path (not shown) connected to the outer tub 3. Thereby, the washing process ends. After the washing process, the rinsing process is then started. In the rinsing process, water containing no detergent, for example, tap water, is supplied to the second internal space 12 of the inner tub 4, and is accumulated in the outer tub 3 and the inner tub 4. In this state, the motor 9 is driven and the rotating member 8 is rotated. During the rinsing process, the inner tub 4 is also in a stopped state. As in the case of the washing process, the water in the second internal space 12 of the inner tub 4 is discharged from the communication port 5A and the discharge port 6A to the washing region 16 by the rotation of the rotating member 8, and the water is generated in the washing region 16 while passing through the first The route K1 and the second route K2 circulate between the arrangement area 14 and the cleaning area 16. The water flow is poured onto the cleaning target Q of the cleaning area 16 or the cleaning target Q is stirred, and the cleaning target Q is rinsed.

When such a water cycle is repeated for a predetermined period of time, the rotating member 8 stops rotating, and the water of the outer tub 3 and the inner tub 4 is discharged. Thereby, the rinsing process ends. The rinsing process can also be repeated multiple times. After the rinsing process, the dehydration process is then started. During the dehydration process, the motor 9 is driven, and only the inner tub 4 is rotated at a high speed. As a result, the centrifugal force is applied to the cleaning target Q in the inner tub 4, so that the cleaning target Q is pressed to the inner peripheral surface 4H of the second peripheral wall 4B which is the inner surface of the inner tub 4, and is dehydrated. The water oozing out from the cleaning target Q due to dehydration is discharged. The dehydration process can also be carried out as an intermediate dehydration process, either after the washing process or after each rinsing process, in which case the dehydration process after the last rinsing process is the final dehydration process. As the final dewatering process ends, the operation of the washing machine 1 ends.

It should be noted that the washing machine 1 may also be provided in the inner tub 4 after the final dewatering process. Hot air drying unit (not shown). In this case, the washing machine 1 can perform the drying process of the cleaning object Q in the inner tub 4 by the hot air of the drying unit. In the drying process, since the cleaning object Q in the inner tub 4 is stirred by the rotation of the inner tub 4, hot air can be blown to the entire cleaning target Q without a dead angle.

As described above, in the washing machine 1, during the washing process and the rotation of the rotating member 8 in the rinsing process, the outflow path 15 causes the water in the washing area 16 to flow out toward the rotating member 8. Thereby, since the water in the washing area 16 can be actively and quickly sent to the side of the rotating member 8 via the second route K2 which is shorter than the first route K1, it can suppress that the water around the rotating member 8 is reduced. Therefore, since the rotating member 8 during the rotation can continuously flow the surrounding water to the supply path 25, the supply path 25 can continue to supply water to the washing area 16. Therefore, the water circulation can be efficiently continued. Further, 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 washing power by causing a large amount of water to drip onto the cleaning target of the washing area 16.

Further, since the partition portion 4I provided in the second bottom wall 4A isolates the supply path 25 from the outflow path 15, it is possible to suppress the water flowing through the supply path 25 from leaking to the outflow path 15 before reaching the washing area 16, or The water flowing through the outflow path 15 leaks to the supply path 25 before flowing out to the side of the rotating member 8. Thereby, since the water can be made to flow to the destination without leaking in the supply path 25 and the outflow path 15, the water circulation can be reliably continued.

In addition, since the guide flow path 18 extending from the outflow path 15 to the upper side Z1 in the washing area 16 ingests the water of the washing area 16 from the upper intake port 18A, the water taken into the guiding flow path 18 is guided in the flow. The road 18 flows down and flows into the outflow path 15. In this case, since the intake port 18A for taking in the water of the washing area 16 into the outflow path 15 can be disposed so that the upper side Z1 is deviated from the cleaning target Q of the washing area 16, the cleaning object Q can be prevented from being attached. The inlet 18A is blocked by the inlet 18A. Thereby, the water in the washing area 16 can be continuously taken in from the intake port 18A through the guide flow path 18 and flowed out through the outflow path 15 to the side of the rotating member 8 without interruption. Therefore, the water circulation can be reliably continued.

Further, since the intake port 18A is located at the upper portion of the guide flow path 18, foreign matter such as garbage or thread in the washing area 16 does not easily enter the intake port 18A. Further, when the water in the washing area 16 is taken into the intake port 18A, the foreign matter such as garbage or thread included in the water can be captured by the filter member 19A provided in the intake port 18A. Therefore, it is not necessary to consider the entry of the foreign matter, and the intake port 18A, the guide flow path 18, and the outflow path 15 can be set to be wide. Therefore, since a large amount of water from the washing area 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.

Further, since the guide portion 4J formed in the second bottom wall 4A guides the water flowing through the outflow path 15 to the rotation axis J side of the rotary member 8, it is possible to further suppress the decrease in the water around the rotary member 8. Therefore, since the rotating member 8 in rotation can reliably continue the flow of the surrounding water to the supply path 25, the water circulation can be reliably continued.

In addition, the second bottom wall 4A may have a through hole 4K that allows the outflow path 15 to communicate from the upper side Z1 to the gap V between the first bottom wall 3A and the second bottom wall 4A. The water flowing through the outflow path 15 from the cleaning area 16 is as shown by the arrow of the chain double-dashed line, and after flowing out from the through hole 4K to the gap V, the through hole 4G from the second bottom wall 4A follows the rotation of the rotating member 8. The flow enters the arrangement area 14 and is taken into the intake port 21A of the rotary member 8 and flows through the water passages 23 toward the radially outer side R2. In this case, the outflow path 15 can also allow the water in the washing area 16 to flow out toward the rotating member 8 via the through hole 4K and the gap V. Further, since the through hole 4G of the second bottom wall 4A has a tendency to actively suck the nearby water into the arrangement region 14, the water flowing through the outflow path 15 is preferentially supplied to the through hole 4G through the guide portion 4J, thereby reliably The case where the water of the first route K1 is emptied during the rotation of the rotating member 8 is prevented. It should be noted that the through hole 4K may be formed at a midway position between the inlet 15A and the outlet 15B of the outflow path 15 in the radial direction R. Further, the through hole 4K may be located at substantially the same position as the inlet 15A in the radial direction R, in other words, directly below the inlet 15A. In this case, the through hole 4K is also the outlet 15B at the same time, and the guide portion 4J may be omitted. .

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the claims.

3 is a longitudinal cross-sectional view showing an internal structure of a washing machine 1 according to a modification. In FIG. 3, the same portions as those described above are denoted by the same reference numerals, and the description thereof will be omitted. The rotating member 8 of the washing machine 1 of the above-described embodiment is formed to be flattened up and down, and is covered by the partition member 5 from the upper side Z1 so as not to be in contact with the cleaning target Q. As shown in the deformation shown in FIG. 3, the rotating member 8 may also be a so-called pulsator, in which case the top plate portion 20 has a shape that is convex toward the cleaning region 16. In this case, although the partition member 5 is omitted, the above-described supply path 25A 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 tub 4. The supply path 25A and the outflow path 15 are separated from each other by the above-described isolation portion 4I.

The rotating member 8 of the modified example is in contact with the cleaning target Q while rotating during the cleaning process, thereby stirring the cleaning target Q. At this time, as in the above embodiment, the water passing around the rotating member 8 Each of the water passages 23 of the over-rotating member 8 flows to the radially outer side R2, and is discharged from the respective supply passages 25 to the cleaning target Q of the cleaning region 16 (see an arrow of a solid line). The water supplied to the washing area 16 is circulated by passing through the first route K1 composed of the through hole 4G, the gap W and the gap V (refer to the arrow of the broken line), or via the passage of the guiding flow path 18 and the outflow path 15. The second route K2 (refer to the arrow of the chain line) returns to the periphery of the rotating member 8.

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

Description of the reference numerals

1: washing machine; 3: outer tub; 3A: first bottom wall; 3B: first peripheral wall; 4: inner barrel; 4A: second bottom wall; 4B: second peripheral wall; 4G: through hole; 4I: partition wall ; 4J: guide; 8: rotating member; 11: first internal space; 12: second internal space; 15: outflow path; 16: cleaning area; 18: guiding flow path; 18A: intake port; Member; 25: supply path; J: axis of rotation; Q: cleaning object; R2: radially outer side; Z1: upper side.

Claims

A washing machine, comprising:

The outer tub has a first bottom wall, an annular first peripheral wall rising from the first bottom wall, and a first inner space surrounded by the first bottom wall and the first peripheral wall, The first internal space can store water;

The inner tub has a second bottom wall disposed on an upper side of the first bottom wall, an annular second peripheral wall rising from the second bottom wall and surrounded by the first peripheral wall, and a second inner space enclosing the second bottom wall and the second peripheral wall, and the second bottom wall and the second peripheral wall are formed with water for reciprocating between the inner tub and the outer tub a through hole in which the cleaning object is accommodated;

a rotating member disposed on an upper side of the second bottom wall in the second inner space, and rotating the surrounding water to a direction away from a rotation axis of the rotating member;

a supply path that supplies water flowing in a direction away from the rotation axis by rotation of the rotating member to a cleaning area located on an upper side of the rotating member in the second internal space and disposed with a cleaning object;

The outflow path is provided separately from the through hole in the second bottom wall, and the water in the washing area flows out toward the rotating member side.
A washing machine according to claim 1, comprising a partition portion provided in said second bottom wall to isolate said supply path from said outflow path.
A washing machine according to claim 1 or 2, comprising a guiding flow path extending from said outflow path to the upper side in said washing area, and having said upper portion for ingesting said upper portion The intake of water in the cleaning area.
A washing machine according to claim 3, comprising a filtering member disposed at said intake opening.
The washing machine according to any one of claims 1 to 4, further comprising a guide portion formed on the second bottom wall to guide water flowing through the outflow path to the rotating member .