CN108699749B

CN108699749B - Cleaning machine

Info

Publication number: CN108699749B
Application number: CN201780012330.4A
Authority: CN
Inventors: 西浦直人; 田中启之
Original assignee: Qingdao Jiaonan Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Haier Asia Co Ltd
Current assignee: Qingdao Jiaonan Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Haier Asia Co Ltd
Priority date: 2016-02-26
Filing date: 2017-02-24
Publication date: 2021-03-23
Anticipated expiration: 2037-02-24
Also published as: CN108699749A; JP6799220B2; WO2017144019A1; JP2017148426A

Abstract

A washer (1) capable of improving a washing force. The washing machine (1) comprises: a cleaning barrel (2) which is formed with a containing space (2A) for containing a cleaning object (Q) and can store water; a water flow generating member (8) for generating a water flow from the water stored in the washing tub (2); an opposing part (5) that faces the storage space (2A) from below (Z2); and an anti-floating member (9). A discharge port (5A) for discharging the water generated by the water flow generation member (8) upward toward the storage space (2A) is formed in the facing portion (5) so as to face the storage space (2A) from the lower side (Z2). The anti-floating member (9) protrudes into the storage space (2A) above the discharge opening (5A) (Z1), and prevents the cleaning object (Q) in the storage space (2A) from floating.

Description

Cleaning machine

Technical Field

The invention relates to a cleaning machine.

Background

The washing machine described in patent document 1 includes: the stirrer is rotatably arranged at the bottom of the washing cylinder, and the lifting rib is arranged on the inner circumferential surface of the washing cylinder. The lifting rib is projected toward the inner periphery of the washing drum in a posture inclined by a predetermined angle with respect to the rotation axis of the agitator. In the washing and rinsing operations, the laundry in the washing tub follows a water flow generated by the rotation of the pulsator. When the washings along the water flow contact with the lifting ribs, the washings are lifted along the inclination of the lifting ribs. Thereby, the laundry located at the bottom side in the washing tub is lifted.

In the washing machine, there is a demand for improvement in the cleaning power of the cleaning object such as the laundry of patent document 1.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2006-68189

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cleaning machine capable of improving a cleaning force.

Means for solving the problems

The invention is a cleaning machine, comprising: a washing tub in which a receiving space for receiving a washing object is formed and which can store water; a water flow generating member generating a water flow from the water accumulated in the washing tub; an opposing part provided on the cleaning tub, opposing the housing space from a lower side, and having a discharge port formed so as to face the housing space from the lower side, the discharge port discharging water generated by the water flow generating member toward the housing space in an upward direction; and an anti-floating member protruding into the storage space above the discharge port, for preventing floating of the cleaning object in the storage space.

In the present invention, the floating prevention member is provided in the middle of the storage space in the vertical direction.

Further, the present invention is characterized in that the lower surface portion of the floating prevention member includes a flat surface.

Effects of the invention

According to the present invention, the water flow generating member generates a water flow from water stored in the washing tub, the opposed portion is opposed to the storage space of the washing tub from a lower side, the water flow is discharged upward toward the storage space from a discharge port formed in the opposed portion, and is splashed toward the washing object in the storage space from the lower side. Thereby, the cleaning object is cleaned.

The cleaning object is splashed with water from the lower side, and the cleaning object is prevented from floating for a predetermined distance or more because the anti-floating member protruding into the storage space above the discharge port is positioned on the top of the cleaning object to be floated. This can keep the distance from the outlet to the cleaning object short, and thus can strongly splash the water flow from the outlet to the cleaning object to improve the cleaning force.

In addition, the water flow discharged upward from the discharge port may be repelled toward the opposite side by the lower surface portion of the float prevention member and then may be splashed toward the cleaning object. This allows the cleaning object to be efficiently stirred in the region from the facing portion to the float preventing member in the storage space. Therefore, the water flow can be splashed toward the corners of the cleaning object, and the cleaning force can be further improved.

Further, according to the present invention, since the floating prevention member is provided in the middle of the vertical direction of the storage space, the cleaning object in the storage space can be reliably prevented from floating for a predetermined distance or more.

Further, according to the present invention, the water flow discharged upward from the discharge port can reliably be rebounded toward the opposite side by passing through the flat surface included in the lower surface portion of the float prevention member.

Drawings

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

Fig. 2 is a longitudinal sectional view of an internal structure of a cleaning machine according to a modification.

Detailed Description

Hereinafter, the washer 1 according to the embodiment of the present invention will be specifically described with reference to the drawings. 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. Other examples of the cleaning object Q are fruits, vegetables, and the like. The washing machine 1 may have a function of drying the washing object Q.

Fig. 1 is a longitudinal sectional view of the internal structure of the cleaning machine 1. First, the outline of the cleaning machine 1 will be described with reference to the vertical direction Z in fig. 1. In the vertical 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 cabinet (not shown) formed in a box shape, and a washing tub 2 disposed in the cabinet. The washing tub 2 includes: an outer tub 3 elastically supported to the cabinet via a damper (not shown), and an inner tub 4 rotatable within the outer tub 3. The washing machine 1 further comprises: an opposing portion 5 and a water pumping member 6 provided in the inner tub 4, a motor 7 for rotating the inner tub 4, a water current generating member 8 rotatable in the inner tub 4 by receiving a driving force of the motor 7, and an anti-floating member 9. It should be noted that the washing machine 1 may not be equipped with a pulsator (pulsator) used in a general washing machine.

The 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 substantially cylindrical circumferential wall 3B having a substantially circular opening 3A at an upper end thereof, a substantially circular disk-shaped bottom wall 3C closing a hollow portion of the circumferential wall 3B from a lower side Z2, and a substantially columnar internal space 3D surrounded by the circumferential wall 3B and the bottom wall 3C and exposed from the opening 3A to an upper side Z1. The upper end portion of the circumferential wall 3B, in which the opening 3A is formed, is formed in a ring shape surrounding the opening 3A. The opening 3A is opened and closed by a cover (not shown) connected to an upper end portion of the circumferential wall 3B. Water such as tap water, bath water, and a liquid in which a detergent is dissolved is stored in the internal space 3D from the bottom wall 3C side.

The inner tub 4 has a central axis extending in the vertical direction Z, and is formed in a bottomed cylindrical shape one turn smaller than the outer tub 3. That is, the inner tub 4 is in a longitudinally arranged state. The inner barrel 4 has: a substantially cylindrical circumferential wall 4B having a substantially circular opening 4A at an upper end portion thereof, a substantially circular plate-shaped bottom wall 4C coaxially connected to a lower end of the circumferential wall 4B, and a substantially cylindrical internal space 4D surrounded by the circumferential wall 4B and the bottom wall 4C and exposed from the opening 4A to an upper side Z1. For example, the circumferential wall 4B is made of metal, the center of the bottom wall 4C is made of metal, and the outer peripheral portion is made of resin. A portion of the outer peripheral portion of the bottom wall 4C protruding toward the upper side Z1 may be regarded as the lower end portion of the circumferential wall 4B. The bottom wall 4C and the lower end of the circumferential wall 4B connected to the bottom wall 4C constitute the bottom of the inner barrel 4. The inner barrel 4 is coaxially housed in the outer barrel 3. The inner tub 4 can rotate around a central axis passing through the center thereof. The central axis of the inner barrel 4 is referred to as a rotation axis J.

Hereinafter, the circumferential direction around the rotation axis J is referred to as a circumferential direction S, and the 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. In the radial direction R, a side close to the rotation axis J is referred to as a radially inner side R1, and a side far from the rotation axis J is referred to as a radially outer side R2.

The opening 4A communicates with the opening 3A of the tub 3 from the lower side Z2, and the opening 3A and the opening 4A are opened and closed together by the cover (not shown). The user of the washing machine 1 can put the washing object Q into the internal space 4D of the take-out inner tub 4 through the opened opening 4A. The cleaning object Q is accommodated in the internal space 4D. Through holes 4E are formed in the circumferential wall 4B and the bottom wall 4C, respectively, and water in the outer tub 3 can flow between the outer tub 3 and the inner tub 4 through the through holes 4E. Thereby, the inner space 4D receives water from the bottom wall 4C side in such a manner as to reach the same water level as the outer tub 3. The plurality of through holes 4E formed in the bottom wall 4C are arranged at intervals in the circumferential direction S at positions offset toward the rotation axis J, i.e., the radially inner side R1.

An annular gimbal 11 is attached to an upper end portion of an inner circumferential surface 4F of the circumferential wall 4B that defines the internal space 4D from the radial outside R2. The balance ring 11 is a device for damping vibration of the inner tub 4 during rotation, and a liquid, such as brine, for helping damping vibration is contained in a cavity 11A inside the balance ring 11. A concave arrangement region 12, which is recessed in a single piece toward the lower side Z2, is formed on the upper surface of the bottom wall 4C. The disposition region 12 is a vertically flat cylindrical space coaxial with the bottom wall 4C. The disposition region 12 is surrounded by the lower end portion of the circumferential wall 4B from the radially outer side R2.

The opposing portion 5 is a cover formed in a disc shape having a central axis coinciding with the rotation axis J and flat in the horizontal direction H, and is attached to the bottom of the inner tub 4 in a state of covering almost the entire region of the arrangement region 12 from the upper side Z1. The opposite part 5 may be integrally provided to the inner tub 4 as a part of the bottom of the inner tub 4. The inner space 4D of the inner tub 4 is vertically partitioned into the arrangement region 12 and the washing region 13 located at the upper side Z1 of the arrangement region 12 by the facing portion 5. The opposing portion 5 is opposed to the cleaning region 13 from the lower side Z2. The arrangement region 12 is a small region occupying the lower end portion of the internal space 4D, whereas the cleaning region 13 is a region occupying most of the internal space 4D and sandwiched between the opposing portion 5 and the gimbal 11 in the vertical direction Z. The cleaning target Q in the internal space 4D is disposed in the cleaning region 13. The cleaning area 13 is a storage space 2A formed inside the cleaning tub 2 and actually storing the cleaning object Q. A plurality of discharge ports 5A are formed at intervals in the circumferential direction S in the outer peripheral portion of the facing portion 5 away from the rotation axis J. Each discharge port 5A penetrates the outer peripheral portion of the opposing portion 5 in the vertical direction Z and faces the cleaning region 13 from the lower side Z2, thereby communicating the outer peripheral portion of the arrangement region 12 with the cleaning region 13.

The water scooping member 6 is formed in a water guide pipe shape bulging radially inward R1 and extending in the vertical direction Z, and is attached to the inner circumferential surface 4F of the circumferential wall 4B of the inner tub 4 from the radially inward R1. A plurality of the pumping members 6 may be provided, in which case the plurality of pumping members 6 are arranged in the circumferential direction S. The upper end portion 6A of the water scooping member 6 is disposed in the middle of the cleaning region 13 in the vertical direction Z, specifically, substantially at the center of the cleaning region 13. The upper end portion 6A has a hollow protruding portion 6B protruding radially inward R1. A water jet 6C that communicates with the hollow portion of the projection 6B and faces the rotation axis J from the radial inner side R1 is formed on, for example, the side surface of the radial inner side R1 of the projection 6B. A water pumping passage 14 extending in the vertical direction Z is formed between the water pumping member 6 and the inner peripheral surface 4F. The hollow portion of the protrusion 6B is a part of the water raising path 14. The water spray passage 14 is exposed radially inward R1 from the water spray port 6C. The lower end of the water raising path 14 is referred to as a suction port 14A. Suction port 14A is connected from upper side Z1 to a portion of the outer peripheral portion of placement region 12 not covered by facing portion 5.

A guide portion 4G is formed at a portion of the bottom of the inner barrel 4 that defines the disposition region 12 from the radially outer side R2, specifically, at the lower end portion of the circumferential wall 4B. The guide portion 4G is a curved surface that bulges outward in the radial direction R2 as it goes to the upper side Z1, and faces the outer peripheral portion of the placement region 12 from the outer radial direction R2. The guide portion 4G may be provided at least at the same position in the circumferential direction S of the bottom portion as the discharge ports 5A of the facing portion 5 and the suction port 14A of the water spouting passage 14, but may be provided over the entire area of the bottom portion in the circumferential direction S. The upper end of the guide portion 4G located at the same position as the discharge port 5A in the circumferential direction S is connected to the discharge port 5A from the lower side Z2. The upper end of the guide portion 4G located at the same position as the suction port 14A in the circumferential direction S is connected to the suction port 14A from the lower side Z2.

The motor 7 is disposed at a lower side Z2 of the bottom wall 3C of the tub 3 in the cabinet. The output shaft of the motor 7 is branched into a first transmission shaft 15 having a tubular shape extending to the upper side Z1, and a second transmission shaft 16 inserted through the first transmission shaft 15 with a clearance. The motor 7 can selectively output a driving force from either one of the first transmission shaft 15 and the second transmission shaft 16 through a known speed change mechanism 17.

The first transmission shaft 15 extends upward Z1, penetrates the center of the bottom wall 3C, and is connected to the center of the bottom wall 4C of the inner tub 4. The upper end of the first transmission shaft 15 has a flange portion 15A projecting like a visor, and the flange portion 15A is fixed to the bottom wall 4C from the lower side Z2 to be coupled to the inner barrel 4. When the motor 7 is driven and the driving force is transmitted to the first transmission shaft 15, the inner tub 4 rotates about the rotation axis J.

The water current generation member 8 is disposed on the upper side Z1 of the bottom wall 4C of the inner tub 4 in a state of not contacting both the bottom of the inner tub 4 and the opposing portion 5 in the disposition region 12 of the lower side Z2 of the opposing portion 5. Since the inner space 4D of the inner tub 4 is partitioned into the arrangement region 12 in which the water current generating member 8 is arranged and the washing region 13 in which the washing object Q is arranged on the upper side Z1 of the opposed portion 5, the washing object Q in the washing region 13 can be prevented from being damaged by contact with the rotating water current generating member 8. This makes it possible to set the rotation speed of the water flow generating member 8 high. The water flow generating member 8 has a top plate portion 20 and a plurality of blade portions 21.

The top plate portion 20 is a disc having a central axis coinciding with the rotation axis J, and has a plate thickness direction coinciding with or substantially coinciding with the plate thickness direction of the bottom wall 4C of the inner barrel 4. The outer diameter of the top plate 20 is almost the same as the outer diameter of the opposing portion 5. The top plate 20 is disposed in parallel to the opposing portion 5 from the lower side Z2. An upper end portion 16A of the second transmission shaft 16 exposed to the upper side Z1 of the flange portion 15A is coupled from the lower side Z2 to the center of the lower surface portion 20A of the top plate 20 coinciding with the rotation axis J.

The plurality of blade portions 21 are thin in the circumferential direction S and radially extend outward in the radial direction R2 away from the rotation axis J, and are provided in the lower surface portion 20A of the top plate portion 20 so as to be aligned in the circumferential direction S. The lower surface portion 20A is provided with a cylindrical space surrounded by the vane portions 21 from the radial outside R2. This space is referred to as intake space 25. The lower surface portion 20A is provided with a water passage 26 sandwiched between the adjacent blade portions 21 in the circumferential direction S, that is, between the adjacent first blade portion 23 and second blade portion 24. The plurality of water passages 26 are arranged in the circumferential direction S. Each water passage 26 is formed as follows: the radially outer side R2 communicates with the intake space 25 and extends radially from the intake space 25 to the radially outer side R2. The end of the radial outer side R2 of each water passage 26 is an outlet 26A that is exposed to the radial outer side R2.

Each water passage 26 is closed by the top plate 20 from the upper side Z1. On the other hand, the blade portions 21 face the bottom wall 4C of the inner barrel 4 from the upper side Z1 without contacting each other. The water flow generating member 8 may have a blocking portion (not shown) connected to the lower end of each blade portion 21 to block each water channel 26 from the lower side Z2. The suction space 25 is opposed to the through hole 4E on the rotation axis J side of the bottom wall 4C from the upper side Z1. The guide portion 4G formed at the bottom of the inner tub 4 abuts the water flow generating member 8 from the radially outer side R2, and is always opposed to the outlet 26A of at least one of the water passages 26 from the radially outer side R2.

The anti-floating member 9 is provided at a middle position in the vertical direction Z of the storage space 2A of the cleaning tub 2, that is, at a middle position in the vertical direction Z of the cleaning region 13, and more specifically, at a substantially center of the cleaning region 13. The anti-floating member 9 is formed in a flange shape protruding from the inner circumferential surface 4F of the inner tub 4 to the inside R1 in the radial direction into the cleaning region 13 on the upper side Z1 of the outlet 5A of the opposing portion 5. The float prevention member 9 is provided at least at the same position as the discharge port 5A of the opposing portion 5 in the circumferential direction S. The lower surface portion 9A of the anti-floating member 9 located at the same position as the discharge port 5A in the circumferential direction S is in a state of facing the discharge port 5A from the upper side Z1. A flat surface 9B that is flat in the horizontal direction H is provided on at least a region of the lower surface portion 9A that is located directly above the discharge port 5A.

The protruding portion 6B of the upper end portion 6A of the pumping member 6 provided at substantially the same position as the anti-floating member 9 in the vertical direction Z may be regarded as the anti-floating member 9. In this case, the lower surface portion of the protruding portion 6B functions as the lower surface portion 9A including the above-described flat surface 9B.

The water flow generating member 8 in the disposition region 12 is immersed in water in a state where the inner space 3D of the outer tub 3 and the inner space 4D of the inner tub 4 store water. When the motor 7 is driven in this state, the driving force of the motor 7 is transmitted from the second transmission shaft 16 to the water flow generating member 8, whereby the water flow generating member 8 is rotated about the rotation axis J. When the water current generating member 8 is rotated, the inner tub 4 is in a stopped state. As indicated by thick solid arrows, the water present in the intake space 25 flows into the water passages 26 by the centrifugal force generated by the rotation of the water flow generating member 8, and flows in the water passages 26 so as to be away from the rotation axis J. The water present on the lower side Z2 of the water flow generating member 8 in the arrangement region 12 is dragged by the water flow in each water channel 26 and flows away from the rotation axis J. When the water in the disposition region 12 thus flows, as indicated by the broken-line arrows, the water existing in the gap 27 between the circumferential wall 3B of the outer tub 3 and the circumferential wall 4B of the inner tub 4 in the radial direction R is drawn by the rotating water flow generating member 8, descends through the gap 27, and is taken into the disposition region 12 from the through-holes 4E of the bottom wall 4C after reaching the gap 28 between the bottom wall 3C of the outer tub 3 and the bottom wall 4C of the inner tub 4.

The water flowing from the suction space 25 into each water channel 26, the water flowing in the arrangement region 12 and on the lower side Z2 of the water flow generating member 8 away from the rotation axis J, that is, the water accumulated in the washing tub 2 forms a water flow by the centrifugal force generated by the rotation of the water flow generating member 8, and flows to the radial outer side R2 of the water flow generating member 8. The water flow passes through the guide portion 4G located forward in the flow direction thereof, and is guided to the upper side Z1 toward the discharge port 5A of the opposing portion 5 or the suction port 14A of the water lifting channel 14. As indicated by the arrow of the chain line, the water flow guided to the outlet 5A is strongly splashed upward from the outlet 5A toward the washing area 13. As indicated by the two-dot chain line arrow, the water flow guided to the suction port 14A of the water lifting path 14 rises in the water lifting path 14 from the suction port 14A, is strongly discharged from the water discharge port 6C of the water lifting member 6, and is poured downward into the cleaning region 13. In this way, the water flow discharged from the discharge port 5A and the water discharge port 6C to the cleaning region 13 with the rotation of the water flow generating member 8 is splashed on the cleaning object Q or the agitation cleaning object Q in the internal space 4D, thereby cleaning the cleaning object Q. Further, the detergent may be contained in the water flow, and in this case, the dirt of the cleaning object Q is decomposed by the detergent.

The water flow from discharge port 5A is splashed toward cleaning object Q from lower side Z2, and cleaning object Q is about to float, but since anti-floating member 9 of upper side Z1 of discharge port 5A is positioned on top of cleaning object Q about to float, cleaning object Q is prevented from floating more than a predetermined distance in storage space 2A of cleaning tub 2, which is cleaning region 13. In particular, since the float preventing member 9 is provided in the middle of the storage space 2A in the vertical direction Z, the cleaning object Q in the storage space 2A can be reliably prevented from floating by a predetermined distance or more. Therefore, since the cleaning object Q is retained on the lower side Z2 of the float preventing member 9, the vertical distance from the discharge port 5A to the cleaning object Q is kept short, and the water flow from the discharge port 5A can be strongly splashed on the cleaning object Q, thereby improving the cleaning force.

The water flow discharged upward from the discharge port 5A may bounce on the lower surface portion 9A of the float prevention member 9 toward the opposing portion 5 and then be splashed toward the cleaning object Q. This allows the cleaning object Q to be efficiently stirred in the region from the facing portion 5 to the float preventing member 9 in the storage space 2A. Therefore, since the water flow can be splashed toward each corner of the cleaning object Q, the cleaning force can be further improved. In particular, the water flow discharged upward from the discharge port 5A can be reliably bounced back toward the facing portion 5 side by the horizontal flat surface 9B included in the lower surface portion 9A.

The water in the washing zone 13 flows out from the through holes 4E of the circumferential wall 4B of the inner tub 4 to the gap 27 between the circumferential wall 3B of the outer tub 3 and the circumferential wall 4B of the inner tub 4, and then is taken into the arrangement zone 12 by the rotating water flow generation member 8 to become a water flow, and is discharged again to the washing zone 13. That is, during the rotation of the water current generating member 8, the water in the inner space 4D of the inner tub 4 becomes a water current and circulates between the disposition region 12 and the washing region 13. After the washing object Q is washed, the inner tub 4 is rotated with the water current generating member 8 stopped, and the washing object Q is dehydrated by the centrifugal force.

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

For example, the anti-floating member 9 may also function as a baffle plate that rotates together with the inner tub 4 to agitate the cleaning object Q. Further, a ring member formed in a ring shape like the gimbal 11 may be disposed on the lower side Z2 of the gimbal 11, and the anti-floating member 9 may be constituted by a part of the ring member.

The anti-floating member 9 is preferably not exposed to the radially inner side R1 from the inner peripheral edge 3E of the opening 3A of the outer tub 3. That is, the peripheral edge portion of the anti-floating member 9 located on the radially inner side R1 is preferably arranged further toward the radially outer side R2 than the inner peripheral edge 3E of the opening 3A. This prevents the anti-floating member 9 from being an obstacle when the cleaning object Q is taken in and out through the opening 3A.

Fig. 2 is a longitudinal sectional view of an internal structure of the cleaning machine 1 according to a modification. In fig. 2, the same portions as those described above are given the same reference numerals, and the description thereof is omitted.

In the washing machine 1 of the modification, for example, the size in the vertical direction Z of the inner tub 4 is small, and thus, as shown in fig. 2, the vertical interval between the opening 3A of the outer tub 3 and the opening 4A of the inner tub 4 is large. In this case, the cleaning region 13 of the inner space 4D of the inner tub 4 located at the upper side Z1 of the opposing part 5 and the upper space 3F of the inner space 3D of the outer tub 3 communicating with the cleaning region 13 from the upper side Z1 via the opening 4A constitute the storage space 2A of the above-described cleaning tub 2. A portion of the circumferential wall 3B of the outer tub 3 on the upper side Z1 of the opening 4A may be transparent or translucent so that the cleaning object Q in the housing space 2A can be viewed from the outside.

In the washing machine 1 of the modification, the balance ring 11 attached to the upper end portion of the circumferential wall 4B of the inner tub 4 also functions as the anti-floating member 9 described above by being disposed as follows: is located halfway in the vertical direction Z of the storage space 2A, more specifically, is located substantially at the center in the vertical direction Z of the storage space 2A, and protrudes from the radial outer side R2 into the storage space 2A. In other words, the anti-floating member 9 is constituted by the gimbal 11. In this case, the lower surface portion of the gimbal 11 functions as the lower surface portion 9A including the above-described flat surface 9B. The water flow from the discharge port 5A is splashed toward the cleaning object Q from the lower side Z2, and thereby the cleaning object Q is about to float, but since the gimbal 11 is positioned on the top of the cleaning object Q about to float, the cleaning object Q can be prevented from floating more than a predetermined distance.

The rotation axis J may be arranged to be inclined with respect to the vertical direction Z, and in this case, the facing portion 5 and the water current generation member 8 may be arranged to be inclined with respect to the horizontal direction H, thereby maintaining an attitude orthogonal to the rotation axis J.

Description of the reference numerals

1: a cleaning machine;

2: a washing barrel;

2A: a storage space;

5: an opposite part;

5A: an outlet port;

8: a water flow generating member;

9: an anti-float member;

9A: a lower surface portion;

9B: a flat surface;

q: cleaning the object;

z: up and down direction;

z1: an upper side;

z2: the lower side.

Claims

1. A cleaning machine comprising:

a case formed as a box body;

a washing tub disposed in the cabinet, having a receiving space for receiving a washing object formed therein, and storing water, the washing tub including an outer tub elastically supported to the cabinet via a damper and an inner tub rotatable in the outer tub, a central axis of the inner tub being referred to as a rotation axis;

a water flow generating member generating a water flow from the water accumulated in the washing tub;

an opposing part provided in the inner tub, dividing an inner space of the inner tub into a disposition region and a washing region located above the disposition region, the opposing part having a plurality of water discharge ports formed at intervals in a circumferential direction in an outer peripheral portion thereof away from the rotation axis, each of the water discharge ports penetrating the outer peripheral portion of the opposing part in a vertical direction and facing the washing region from a lower side so as to communicate the outer peripheral portion of the disposition region with the washing region, the water discharge ports discharging water generated by the water flow generating member toward the accommodation space in the vertical direction; and

an anti-floating member protruding into the storage space above the discharge port for preventing a cleaning object in the storage space from floating; the anti-floating member is provided at a substantial center in a vertical direction of the washing area, the anti-floating member is formed in a flange shape protruding from an inner peripheral surface of the inner barrel toward a radially inner side toward the washing area at an upper side of the discharge port of the opposite portion, the anti-floating member is provided at least at a position circumferentially identical to the discharge port of the opposite portion, and a lower surface portion of the anti-floating member located at the same position in the circumferential direction as the discharge port is in a state of facing the discharge port from the upper side;

the circumferential direction around the rotation axis J is referred to as a circumferential direction, the radial direction around the rotation axis J is referred to as a radial direction, both the circumferential direction and the radial direction are directions along a horizontal direction, and in the radial direction, a side closer to the rotation axis J is referred to as a radially inner side, and a side farther from the rotation axis J is referred to as a radially outer side.

2. The cleaning machine of claim 1,

the lower surface portion of the floating-up preventing member includes a flat surface.