JP2021191572A - washing machine - Google Patents

Abstract

To provide a washing machine which can sufficiently clean an object in every part thereof.SOLUTION: A washing machine 10 has: a washing room 11; a hollow table rotation shaft 25 which rotates around a first shaft 3; a first swivel joint 31 installed within the table rotation shaft 25; a table 37 which is fixed to the table rotation shaft 25 and on which a washed object 42 may be installed; a first motor 15 which rotates the table rotation shaft 25; a propeller shaft 63 which rotates around a second shaft 7 arranged parallel to the first shaft 3; a second swivel joint 65 connected to the propeller shaft 63; and a nozzle 69 which rotates integrally with the second swivel shaft 65b and jets a cleaning fluid 9 in a direction different from that of the second shaft.SELECTED DRAWING: Figure 1

Description

The present invention relates to a washing machine.

A method of rotating a table on which an object is fixed, injecting a cleaning fluid from a nozzle installed on the side of the table, and spraying the cleaning fluid onto the object to clean the object is used (for example, Japanese Patent Application Laid-Open No. 2016). -055275).

With a conventional washing machine, depending on the shape of the object, the jet of the cleaning fluid does not collide with every corner of the object, and it may not be possible to sufficiently clean the object.

An object of the present invention is to provide a washing machine capable of sufficiently washing every corner of an object.

The first aspect of the present invention is
Cleaning room and
A hollow table rotating shaft that rotates around the first axis,
The first swivel fitting
A first swivel housing that can rotate inside the table rotation shaft,
A first swivel joint, comprising a first swivel shaft located inside the first swivel housing and restricted in rotation.
A table fixed to the table rotating shaft and installed inside the cleaning chamber where an object to be cleaned can be installed.
The first motor that rotates the table rotation shaft and
A propeller shaft that rotates around a second axis parallel to the first axis,
The second swivel fitting
A second swivel housing arranged at the end of the propeller shaft on the cleaning chamber side with restricted rotation,
A second swivel fitting having a second swivel shaft disposed inside the second swivel housing and rotating integrally with the propeller shaft.
A nozzle that rotates integrally with the second swivel shaft inside the cleaning chamber and ejects a cleaning fluid toward the object to be cleaned in a direction different from that of the second shaft.
Is a washing machine.

Cleaning includes deburring with air blow and high pressure jet.
The washer has one or more nozzles. The washer preferably has a plurality of nozzles. All or part of the nozzle ejects the cleaning fluid perpendicular to the second axis. The nozzle is, for example, a direct irradiation nozzle, a flat emission nozzle, or a conical injection nozzle. The nozzle may include a plurality of types of nozzles.

The cleaning fluid is, for example, water, a water-based cleaning liquid, an organic solvent, compressed air, or dry air. The water is, for example, pure water, ion-exchanged water, tap water, or industrial water. For example, industrial water is filtered and used. The water-based cleaning liquid is, for example, a neutral cleaning liquid or a basic cleaning liquid. The water-based cleaning liquid may contain a rust preventive agent and a surfactant. The cleaning fluid may be a heated fluid.
Cleaning fluid sources are, for example, liquid pumps, compressors, blowers. The cleaning fluid source may be located outside the cleaning machine. For example, the cleaning fluid source is a compressor or liquid pump installed in a factory.
The first annular flow path is arranged in the first swivel housing or the first swivel shaft.
The second annular flow path is arranged in the second swivel housing or the second swivel shaft.

The first motor and the second motor are arranged outside the cleaning chamber. The first motor and the second motor are, for example, PM synchronous motors, servo motors, and stepping motors. The first motor and the second motor may have a speed reducer. Preferably, the first motor or the second motor has a tachometer or an angle sensor. The angle sensor is, for example, a rotary encoder or a resolver.
The first motor may be connected to the table rotating shaft by a toothed belt mechanism or a gear mechanism.
The second motor may be directly connected to the propeller shaft. The propeller shaft may be integrated with the output shaft of the second motor. The second motor may be connected to the propeller shaft by a toothed belt mechanism or a gear mechanism.

The working fluid is, for example, compressed air. The working fluid source is, for example, a compressor or a compressed air supply port.
The tilting device is, for example, a combination of a motor, a rotary cylinder, a telescopic cylinder and a link. The cylinder is, for example, an air cylinder or an electric cylinder. The motor is, for example, a servo motor or a stepping motor.
The linear motion mechanism is, for example, a cylinder, a ball screw / servomotor mechanism. The cylinder is, for example, an air cylinder or an electric cylinder. The linear motion mechanism may include a linear motion guide such as a linear guide or a bounce spline. The linear guide, ball screw and servomotor may be installed in a column arranged on the lower surface of the cleaning chamber 11.

The nozzle, nozzle block, second swivel shaft, and propeller shaft rotate as one.
Desirably, the nozzles located in the main pipe eject the cleaning fluid in the direction perpendicular to the second axis. The nozzles arranged in the branch pipe inject the cleaning fluid in a direction parallel to the second axis or inclined to the second axis.
The nozzle holder may be composed of a round tube. The branch pipe may branch from the middle part of the main pipe and be arranged on the proximal end side of the object to be cleaned. The branch pipe may branch from the tip of the main pipe and be arranged on the tip side of the object to be cleaned. The nozzle holder is composed of a main pipe and a branch pipe, and may be configured in an L-shape or a C-shape. The nozzle holder may be a prismatic block. When the nozzle holder is a block, the nozzles to be ejected can be arranged on a plane different from the injection plane together with the nozzles arranged along the injection plane.

According to the washing machine of the present invention, every corner of the object can be sufficiently washed.

Longitudinal sectional view of the washing machine of the first embodiment Longitudinal sectional view of the washing machine of the second embodiment

(Embodiment 1)
FIG. 1 is a cross-sectional view of the washing machine 10 of the present embodiment cut along a plane passing through the first axis 3 and the second axis 7. The upper part of FIG. 1 is vertically upward. As shown in FIG. 1, the cleaning machine 10 includes a cleaning chamber 11, a first motor 15, a table rotating shaft 25, a first swivel joint 31, a table 37, a second motor 55, and a propeller shaft 63. It has a second swivel joint 65, a first nozzle 69, and a control device 73. The cleaning machine 10 includes a motor bracket 13, a pulley 17 with a driving tooth, a pulley 27 with a driven tooth, a belt 29 with an endless tooth, a housing 21, a column 35, a clamping device 41, a working fluid source 45, and the like. Valve 47, linear motion mechanism 57, motor housing 53, coupling 54, slide guide 51, slide shaft 59, nozzle holder (first nozzle holder) 67, and pump (first cleaning fluid source) 71. And may have.

The cleaning chamber 11 may have a cylindrical shape centered on the first axis 3. The first axis 3 and the second axis 7 extend in the vertical direction. The motor bracket 13 has a table shape. The motor bracket 13 is installed on the lower surface of the cleaning chamber 11 and outside the cleaning chamber.
The first motor 15 is installed on the motor bracket 13. The first motor 15 is a servo motor.

The housing 21 has a hollow cylindrical shape centered on the first shaft 3, and is installed so as to penetrate the bottom surface of the cleaning chamber 11. The table rotating shaft 25 is supported inside the housing 21 via a bearing 23. The table rotating shaft 25 has a hollow cylindrical shape and penetrates the housing 21. The table rotary shaft 25 has a flange 25a at the upper end. The flange 25a is arranged in the cleaning chamber 11. A seal ring (not shown) may be provided between the flange 25a and the housing 21 to seal the gap between the flange 25a and the housing 21.

The pulley 17 with driving teeth is fixed to the output shaft of the first motor 15. The driven toothed pulley 27 is fixed to the lower end of the table rotating shaft 25. The endless toothed belt 29 is stretched between the driven toothed pulley 17 and the driven toothed pulley 27.

The first swivel joint 31 has a first swivel housing 31a, a first swivel shaft 31b, a bearing 31c, a first flow path 31e, a first annular flow path 31d, and a second flow path 31f. The first swivel joint 31 may have a flange 31 g and a lid 31 h.

The first swivel housing 31a has a hollow cylindrical shape and is arranged inside the table rotating shaft 25. The flange 31g is arranged at the upper end of the first swivel housing 31a. The flange 31g is fixed to the flange 25a. The first swivel housing 31a is integrated with the table rotation shaft 25 and rotates about the first shaft 3. The first swivel housing 31a can be pulled out from above the table rotating shaft 25.
The first swivel shaft 31b has a solid cylindrical shape and is supported inside the first swivel housing 31a via a bearing 31c. The rotation of the first swivel shaft 31b is limited. Preferably, the first swivel shaft 31b can be pulled out from below the first swivel housing 31a.

The lid 31h is arranged on the upper surface of the first swivel housing 31a and closes the inside of the first swivel housing 31a.
One or more first annular channels 31d (s) are arranged in the first swivel housing 31a.
The first flow path 31e is arranged on the first swivel shaft 31b. One end of the first flow path 31e opens facing the respective first annular flow path 31d. The other end of the first flow path 31e opens to the lower end surface of the first swivel shaft 31b.
The second flow path 31f is arranged in the first swivel housing 31a. One end of the second flow path 31f opens into each first annular flow path 31d. The other end of the second flow path 31f opens into the cylindrical surface of the flange 31g.

The column 35 is installed on the flange 25a and extends in the vertical direction. A tilting shaft 39 is arranged at the upper end of the column 35.
The table 37 is tiltably supported by the tilting shaft 39. For example, the table 37 tilts from the vertical direction to the horizontal direction. The table 37 may be tilted freely or may be positioned only at a specific angle. For example, the table 37 is indexed at two positions, a horizontal plane and a vertical plane.
The tilting device 43 tilts the table 37. The tilting device 43 includes an air cylinder and a link. The tilting device 43 can position the table 37 at two positions.
The column 35, the table 37, and the tilting device 43 rotate integrally with the table rotating shaft 25.

The clamp device 41 has a fluid cylinder 41a and a clamper 41b. The clamp device 41 is arranged on the table 37. The fluid cylinder 41a is, for example, a double-acting air cylinder. The clamper 41b clamps or unclamps the object to be cleaned 42 as the fluid cylinder 41a expands and contracts. The table 37 is integrated with the table rotation shaft 25 and rotates about the first axis 3.

The working fluid source 45 is a compressed air supply port. The working fluid 5 is compressed air. The valve 47 is a directional control valve, for example, a two-position solenoid valve. The valve 47 is connected to the working fluid source 45.
The valve 47 and the first flow path 31e are connected by a flow path 46. The second flow path 31f and the fluid cylinder 41a are connected by the flow path 40. The flow paths 40 and 46 are, for example, air tubes.
The working fluid 5 is supplied to the fluid cylinder 41a and the tilting device 43 through the valve 47, the first swivel joint 31, the flow path 40, and the flow path 46.

The slide guide 51 is a hollow cylinder (for example, a hollow cylinder) and is installed so as to penetrate the bottom surface of the cleaning chamber 11.
The slide shaft 59 is arranged inside the slide guide 51 so as to be able to move forward and backward along the second axis 7. The outer surface of the slide shaft 59 may slide on the inner surface of the slide guide 51.
The propeller shaft 63 is supported inside the slide shaft 59 via a bearing 61. The propeller shaft 63 rotates about the second shaft 7.

The motor housing 53 is installed at the lower end of the slide shaft 59.
The second motor 55 is installed in the motor housing 53. The second motor 55 is a servo motor.
The linear motion mechanism 57 is installed on the lower surface of the cleaning chamber 11 and advances and retreats the motor housing 53. The linear motion mechanism 57 is a servomotor / ball screw mechanism. The motor housing 53 is arranged on a linear guide (not shown) installed parallel to the second axis 7.

The second swivel joint 65 has a second swivel housing 65a, a second swivel shaft 65b, a second annular flow path 65e, a third flow path 65f, and a fourth flow path 65g.
The second swivel housing 65a has a hollow cylindrical shape and is installed on the upper end surface of the slide shaft 59.
The second swivel shaft 65b has a cylindrical shape and is rotatably supported inside the second swivel housing 65a via a bearing 65d. The second swivel shaft 65b rotates integrally with the propeller shaft 63. A flange 65c may be arranged at the upper end of the second swivel shaft 65b. The second swivel shaft 65b may be fixed to the propeller shaft 63, or may be configured integrally.

The second annular flow path 65e is arranged in the second swivel housing 65a.
The third flow path 65f is arranged in the second swivel housing 65a. One end of the third flow path 65f opens into the second annular flow path 65e. The other end of the third flow path 65f opens to the outer cylinder surface of the second swivel housing 65a.
The fourth flow path 65g is L-shaped and is arranged on the second swivel shaft 65b. One end of the fourth flow path 65g opens facing the second annular flow path 65e. The other end of the fourth flow path 65g opens in the center of the flange 65c.

The pump (first cleaning fluid source) 71 is a liquid pump. The liquid pump is, for example, a centrifugal pump or a metering pump. The centrifugal pump is, for example, a turbine pump. The metering pump is, for example, a piston pump. The discharge pressure of the pump 71 is, for example, 1 MPa to 50 MPa. The cleaning fluid (first cleaning fluid) 9 is, for example, pure water or a water-soluble cleaning liquid.

The nozzle holder 67 is integrated with the second swivel shaft 65b and rotates about the second shaft 7. The nozzle holder 67 has a flange 67a, a main pipe 67b, a flow path 67c, and a branch pipe 67d. The flange 67a is joined to the flange 65c. The main pipe 67b extends along the second axis 7. The branch pipe 67d extends perpendicularly to the main pipe 67b from the middle and the tip portion of the main pipe 67b. The branch pipe 67d is arranged so as to surround the top and bottom of the object to be cleaned 42. The nozzle holder 67 has a C-shape as a whole and surrounds one half of the object to be cleaned 42. The main pipe 67b and the branch pipe 67d are round pipes. The flow path 67c is a space inside the main pipe 67b and the branch pipe 67d. The flow path 67c is connected to the fourth flow path 65g. Preferably, the flow path 67c has the same cross-sectional area as the fourth flow path 65g.

The nozzle 69 is installed in the nozzle holder 67 so as to face the object to be cleaned 42, and is connected to the flow path 67c. For example, the plurality of nozzles 69 are arranged along the nozzle holder 67 on a single injection plane passing through the second axis 7. At this time, the nozzle 69 injects the cleaning fluid 9 along the injection plane. Some nozzles 69 may eject the cleaning fluid 9 perpendicular to the second axis.

The control device 73 controls the first motor 15, the second motor 55, the valve 47, the pump 71, the tilting device 43, and the linear motion mechanism 57. The control device 73 is, for example, a microcomputer, a sequencer, or a numerical control device.

According to the washing machine 10, the object to be washed 42 can be freely rotated or swung along the first axis 3. Further, the nozzle 69 can be freely rotated or swung along the second axis 7. For example, the washing machine 10 can rotate the cleaning target object 42 and swing the nozzle 69 in synchronization with the rotation phase of the cleaning target object 42. By freely swinging the nozzle 69 along the second axis while changing the rotation phase of the object to be cleaned 42, the cleaning fluid 9 can collide with the object to be cleaned 42 at various angles.
Since the nozzle holder 67 has a branch pipe 67d so as to surround the object to be cleaned 42, the upper and lower surfaces of the object to be cleaned 42 can also be cleaned.

The posture of the object to be cleaned 42 can be changed by the tilting device 43. The tilting device 43 can change the posture of the cleaning object 42 during cleaning to change the collision position and the collision angle of the cleaning fluid 9 with the cleaning object 42. Further, the tilting device 43 may stand the table 37 for cleaning, and after the cleaning is completed, the table 37 may be leveled. When the table 37 is erected for cleaning, the distance between the object to be cleaned 42 and the nozzle 69 may be close to each other. Further, if the table 37 is horizontal, the object to be cleaned 42 can be stably placed on the table 37. Therefore, it is convenient when installing and carrying out the object to be cleaned 42.

The table rotation shaft 25 and the propeller shaft 63 may be installed so as to extend downward from the upper surface of the cleaning chamber 11.

(Embodiment 2)
FIG. 2 is a cross-sectional view of the washer 100 of the present embodiment cut along a plane passing through the first axis 3 and the second axis 7. The washing machine 100 has a first nozzle block 101, a second nozzle block 103, a second nozzle 105, a third swivel joint 107, and a second fluid source 109. The second nozzle 105 ejects the second fluid 8. Other configurations of the washing machine 100 of the present embodiment are substantially the same as the washing machine 10 of the first embodiment.

The first nozzle block 101 has a main block 101a, a lower block 101b, an upper block 101c, a flange 101d, and a flow path 101e. The main block 101a has a rectangular parallelepiped shape and extends vertically. The lower block 101b extends diagonally downward from the lower part of the main block 101a toward the first axis 3. The upper block 101c extends horizontally from above the main block 101a toward the first axis 3. The flange 101d is arranged at the lower end of the main block 101a and is fastened to the flange 65c. The nozzle 69 is on the injection plane passing through the second axis 7, and is arranged in the main block 101a, the lower block 101b, and the upper block 101c. The nozzle 69 is installed toward the object to be cleaned 42. The flow path 101e is arranged inside the main block 101a, the lower block 101b, and the upper block 101c, and connects the fourth flow path 65g and the nozzle 69.

The second nozzle block 103 has substantially the same structure as the first nozzle block 101. The second nozzle block 103 is arranged rotationally symmetrically with respect to the first nozzle block 101 and the second axis 7. For example, the second nozzle block 103 is arranged on the back surface of the first nozzle block 101 at a position rotated by 180 degrees. The second nozzle block 103 has an upper block 103c, a flange 103d, and a flow path 103e. The flange 103d is arranged at the upper end of the second nozzle block 103 with the second axis 7 as the center. The flow path 103e connects the flange 103d and the second nozzle 105.

The second nozzle 105 is on the second injection plane passing through the second axis 7, and is arranged in the second nozzle block 103. The second nozzle 105 may have a nozzle 105a that is arranged at the tip of the upper block 103c and ejects the second fluid 8 vertically downward.

The third swivel joint 107 is arranged above the second nozzle block 103 with the second axis 7 as the center. The third swivel joint 107 has a third swivel housing 107a, a third swivel shaft 107c, a bearing 107b, and a fifth flow path 107d. The third swivel housing 107a may be fixed to the washing chamber 11. The third swivel shaft 107c is rotatably supported about the second shaft 7 by the third swivel housing 107a via a bearing 107b. The fifth flow path 107d passes through the third swivel housing 107a and the third swivel shaft 107c around the second shaft 7. The fifth flow path 107d is connected to the flow path 103e.

The second fluid source 109 is, for example, an air compressor, a blower, or an air inlet. The second fluid source 109 is connected to the fifth flow path 107d. The second fluid source 109 sends the second fluid 8 to the second nozzle 105 via the fifth flow path 107d and the flow path 103e. The second fluid 8 is, for example, air, heated air, compressed air, dry air, and steam.

According to the cleaning machine 100 of the present embodiment, when the first nozzle block 101 is directed toward the object to be cleaned 42, the nozzle 69 can inject the cleaning fluid 9 onto the injection plane to clean the object to be cleaned 42. Further, the nozzle blocks 101 and 103 are rotated around the second shaft 7, and the second nozzle block 103 is directed toward the object to be cleaned 42. When the second nozzle block 103 is directed toward the object to be cleaned 42, the second nozzle 105 can inject the second fluid 8 onto the second injection plane. For example, the cleaning object 42 can be washed with the cleaning fluid 9 which is a cleaning liquid, and then the cleaning object 42 can be dried with the second fluid 8 which is dry air.

The first nozzle 69 is arranged in the first nozzle block 101. The second nozzle 105 is arranged in the second nozzle block 103. Therefore, the first nozzle 69 and the second nozzle 105 are arranged on the injection plane passing through the second axis 7, and inject the fluid on the injection plane. In operating the washing machine 100, it is necessary to synchronize the rotation phases of the first nozzle 69, the second nozzle 105, and the table 37. Here, since the first nozzle 69 and the second nozzle 105 are arranged on the injection plane passing through the second axis 7, it is easy to control the phases of the first nozzle 69, the second nozzle 105, and the table 37.

In this embodiment, the cleaning fluid 9 passes through the second swivel joint 65. Further, the second fluid 8 passes through the third swivel joint 107. By properly using the swivel joints 65 and 107 for each fluid, it is easy to obtain a large effective cross-sectional area of the flow path. Therefore, even when the volume of the cleaning chamber 11 is relatively small, it is easy to increase the flow rates of the cleaning fluid 9 and the second fluid 8.

The washing machine 100 of the present embodiment has two nozzle blocks, but may have three or more nozzle blocks. For example, when having three nozzle blocks, each nozzle block may be displaced by 120 degrees when viewed along the second axis 7. The number and shape of the nozzle blocks can be appropriately deformed according to the type of fluid and the flow rate of the fluid.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention, and all of the technical matters included in the technical idea described in the claims of the present invention are the present invention. Is the target of. Although the above-described embodiment shows a suitable example, those skilled in the art can realize various alternative examples, modified examples, modified examples, or improved examples from the contents disclosed in the present specification. These are included in the technical scope set forth in the appended claims.

3 1st axis 5 Working fluid 7 2nd axis 9 Cleaning fluid 10 Cleaning machine 11 Cleaning chamber 15 1st motor 25 Table rotating shaft 31 1st swivel joint 31a 1st swivel housing 31b 1st swivel shaft 37 Table 42 Cleaning object 45 Working fluid source 55 2nd motor 63 Propeller shaft 65 2nd swivel joint 65a 2nd swivel housing 65b 2nd swivel shaft 67 Nozzle holder 69 Nozzle 71 Pump (cleaning fluid source)

Claims (12)

Cleaning room and
A hollow table rotating shaft that rotates around the first axis,
The first swivel fitting
A first swivel housing that can rotate inside the table rotation shaft,
A first swivel joint, comprising a first swivel shaft located inside the first swivel housing and restricted in rotation.
A table fixed to the table rotating shaft and installed inside the cleaning chamber where an object to be cleaned can be installed.
The first motor that rotates the table rotation shaft and
A propeller shaft that rotates around a second axis parallel to the first axis,
The second swivel fitting
A second swivel housing arranged at the end of the propeller shaft on the cleaning chamber side with restricted rotation, and a second swivel housing.
A second swivel fitting having a second swivel shaft disposed inside the second swivel housing and rotating integrally with the propeller shaft.
A first nozzle that rotates integrally with the second swivel shaft inside the cleaning chamber and ejects the first cleaning fluid toward the object to be cleaned in a direction different from that of the second axis.
Has a washing machine. A slide guide arranged along the second axis and
A slide shaft that slides on the slide guide, moves forward and backward along the second axis, and rotatably supports the propeller shaft.
Further having a linear motion mechanism for advancing and retreating the slide shaft.
The washing machine according to claim 1. The first axis extends in the vertical direction.
The washing machine according to claim 1 or 2. With a clamping device having a fluid cylinder and placed on the table,
Working fluid source and
Further having a valve connected to the working fluid source,
The first swivel joint is
A first annular flow path arranged between the first swivel housing and the first swivel shaft,
A first flow path connected to the first annular flow path and the valve and arranged on the first swivel shaft, and a first flow path.
It has a first annular flow path and a second flow path connected to the fluid cylinder and arranged in the first swivel housing.
The washing machine according to any one of claims 1 to 3. Has more cleaning fluid source,
The second swivel joint is
A second annular flow path arranged between the second swivel housing and the second swivel shaft,
A third flow path, which connects the second annular flow path and the cleaning fluid source and is arranged in the second swivel housing,
It has a fourth flow path that connects the second annular flow path and the first nozzle and is arranged on the second swivel shaft.
The washing machine according to any one of claims 1 to 4. The slide shaft is installed so as to penetrate the cleaning chamber.
The second swivel joint was installed inside the washing chamber.
The washing machine according to any one of claims 1 to 5. The table rotating shaft is installed so as to penetrate the washing chamber.
The table rotating shaft has a flange disposed inside the cleaning chamber.
The first swivel housing is fixed to the flange and can be pulled out into the cleaning chamber.
The washing machine according to any one of claims 1 to 6. A column fixed to the table rotating shaft and supporting the table,
Further having a tilting device installed in the column,
The table is rotatably installed in the column.
The tilting device changes the posture of the table.
The washing machine according to any one of claims 1 to 7. Further having a first nozzle holder fastened to the second swivel shaft
The first nozzle was arranged in the first nozzle holder so as to inject the first cleaning fluid along the first injection plane passing through the second axis.
The washing machine according to any one of claims 1 to 8. The first nozzle holder is
The main pipe extending along the second axis and
It has a branch pipe that branches from the main pipe and extends along the injection plane.
A plurality of the first nozzles are arranged in the main pipe and the branch pipe.
The washing machine according to claim 9. With the second fluid source,
A third swivel joint arranged on the side opposite to the second swivel joint with respect to the first nozzle holder.
With the 3rd swivel housing,
A third swivel shaft rotatably supported around the second axis in the third swivel housing,
With a third swivel fitting,
A second nozzle that rotates integrally with the third swivel shaft inside the cleaning chamber and injects a second fluid toward the object to be cleaned in a direction different from that of the second axis.
The washing machine according to any one of claims 1 to 10, further comprising. Further having a second nozzle holder fastened to the third swivel shaft
The second nozzle is arranged in the second nozzle holder so as to inject the second fluid along the second injection plane passing through the second axis.
The washing machine according to any one of claims 1 to 11.

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