CA2155433A1

CA2155433A1 - Washing water injection machine and dish washing device provided with said washing water injection machine

Info

Publication number: CA2155433A1
Application number: CA 2155433
Authority: CA
Inventors: Arita Kinya; Shodai Yoshihiko; Sato Minoru; Sendoda Norio; Uchimura Yoshinobu; Ono Masahiro; Himuro Shoichiro
Original assignee: Individual
Current assignee: Toto Ltd
Priority date: 1993-12-24
Filing date: 1994-12-22
Publication date: 1995-07-06
Also published as: EP0688607A4; WO1995017971A1; EP0688607A1

Abstract

A dish washing tube having an opening formed in a side wall thereof is formed continuously to a kitchen sink; a washing water injection machine is disposed outwardly of the opening which comprises a multilayer unit constituted by a plurality of discs which are integrally concentrically layered over each other with a certain gap therebetween, a driving device for rotating the multilayer unit about its center axis and a washing water supply device for supplying washing water to each of the discs of the multilayer unit; and the opening and the washing water injection machine are surrounded by a casing.

Description

~ 2~554~3 DESCRIPTION
WASH WATER SPOUTING APPARATUS AND
DISH WASHER HAVING WASH WATER SPOUTING APPARATUS
[TECHNICAL FIELD]
The present invention relates to a wash water spouting apparatus and a dish washer having a wash water spouting apparatus.
[BACKGROUND ART]
Dish washers which have wash water spouting apparatuses for spouting wash water pressurized by pumps are disclosed in Japanese Patent Laid-Open Publication Hei 3-215232, Japanese Patent Laid-Open Publication Hei 4-279139, etc.
The conventional dish washers disclosed in Japanese Patent Laid-Open Publication Hei 3-215232, Japanese Patent Laid-Open Publication Hei 4-279139, etc. have the following problems.
@~ The motors for driving the pumps must be large because the pumps must highly pressurize the wash water. Thus, the wash water spouting apparatuses are large, the dish washers are large, the production costs and the running costs of the dish washers are high, and the dish washers are very noisy during operation.
~ The dish washers must be equipped with pumps and injection nozzles. Reservoir tanks must be disposed between water supply pipes and the pumps as a safety measure. Thus, the structure of the wash water spouting apparatuses is complicated, the structure of the dish washers is complicated, and the production costs and the running costs of the dish washers are high.
[DISCLOSURE OF INVENTION]
The present invention was made for solving the above problems ~3 and ~ of the conventional dish washers.
In accordance with the present invention, there is provided a 15~433 wash water spouting apparatus which has a disk, a driving apparatus for rotating the disk around its central axis and a wash water supplying apparatus for supplying the disk with wash water.
In accordance with another aspect of the present invention, there is provided a wash water spouting apparatus which has a stacked body made of a plurality of disks stacked coaxially with and separated from each other and united as a single body, a driving apparatus for rotating the stacked body around its central axis and a wash water supplying apparatus for supplying the disks of the stacked body with wash water.
In accordance with a preferred embodiment of the present invention, a discharging port of the wash water supplying apparatus is opposed to a portion of the disk radially outwardly offset from its central axis.
In accordance with a preferred embodiment of the present invention, discharging ports of the wash water supplying apparatus are disposed facing opposite surfaces of the disk and opposed to each other.
In accordance with a preferred embodiment of the present invention, a discharging port of the wash water supplying apparatus is directed in the rotating direction of the disk and inclined relative to the disk surface.
In accordance with a preferred embodiment of the present invention, a discharging port of the wash water supplying apparatus is made oval to have its major axis extend radially.
In accordance with a preferred embodiment of the present invention, the space between adjacent disks of the stacked body is narrow, and the wash water supplying apparatus has a pipe which communicates with the central portion of the space between adjacent ~ 21a5~3:~

disks at one end and communicates with a wash water tank at the other end.
In accordance with a preferred embodiment of the present invention, the space between adjacent disks of the stacked body is narrow, the wash water supplying apparatus has a pipe which communicates with the central portion of the space between adjacent disks at one end and communicates with a wash water tank at the other end, and the wash water spouting apparatus further has a guide box for enclosing the stacked body which is provided with an opening opposed to the space between adjacent disks.
In accordance with a preferred embodiment of the present invention, the space between adjacent disks of the stacked body is narrow, the wash water supplying apparatus has a pipe which communicates with the central portion of the space between adjacent disks at one end and communicates with a wash water tank at the other end, and the outer periphery of the space between adjacent disks is partially closed.
In accordance with a preferred embodiment of the present invention, at least one of the outer peripheral edges of the disk or the disks is rounded.
In accordance with another aspect of the present invention, there is provided a wash water spouting apparatus which has a stacked body made of a disk and an annular plate disposed on one of the surfaces of the disk, the disk and the annular plate being substantially equal in outer diameter, stacked coaxially with each other with a narrow space between them and united as a single body, or of a disk and a pair of annular plates disposed on the opposite surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each ~ 2155~33 other with narrow spaces between them and united as a single body, a driving apparatus for rotating the stacked body around its central axis and a wash water supplying apparatus for supplying the disk of the stacked body with wash water.
In accordance with another aspect of the present invention, there is provided a wash water spouting apparatus which has a plurality of stacked bodies which are disposed coaxially with each other and united as a single body, each stacked body being made of a disk and an annular plate disposed on one of the surfaces of the disk, the disk and the annular plate being substantially equal in outer diameter, stacked coaxially with each other with a narrow space between them and united as a single body, or of a disk and a pair of annular plates disposed on the opposite surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each other with narrow spaces between them and united as a single body, a driving apparatus for rotating the stacked bodies around their central axes and a wash water supplying apparatus for supplying the disks of the stacked bodies with wash water.
In accordance with a preferred embodiment of the present invention, a discharging port of the wash water supplying apparatus is opposed to a portion of the disk radially outwardly offset from its central axis.
In accordance with a preferred embodiment of the present invention, discharging ports of the wash water supplying apparatus are disposed facing the opposite surfaces of the disk and opposed to each other.
In accordance with a preferred embodiment of the present invention, a discharging port of the wash water supplying apparatus is directed in the rotating direction of the disk and inclined ~155433 relative to the disk surface.
In accordance with a preferred embodiment of the present invention, a discharging port of the wash water supplying apparatus is made oval to have its major axis extend radially.
In accordance with a preferred embodiment of the present invention, at least one of the outer peripheral edges of the disk or the disks, or the annular plates is rounded.
In accordance with a preferred embodiment of the present invention, a plurality of radially directed blades are disposed in the narrow space between the disk and the annular plate to be circumferentially spaced from each other.
In accordance with another aspect of the present invention, there is provided a wash water spouting apparatus which has a stacked body made of a disk and a plurality of annular plates disposed on one of the surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each other with narrow spaces between them and united as a single body, or of a disk and a pair of groups of annular plates disposed on opposite surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each other with narrow spaces between them and united as a single body, a driving apparatus for rotating the stacked body around its central axis, and a wash water supplying apparatus for supplying the narrow spaces of the stacked body with wash water.
In accordance with a preferred embodiment of the present invention, a discharging port of the wash water supplying apparatus is disposed radially outwardly offset from the central axis of the stacked body and near the inner periphery of the narrow space.
In accordance with a preferred embodiment of the present t~ 21S~433 invention, at least one of the outer peripheral edges of the disk or the annular plates is rounded.
In accordance with a preferred embodiment of the present invention, a plurality of radially directed blades are disposed in the narrow space between the disk and the annular plate and in the narrow space between the adjacent annular plates to be circumferentially spaced from each other.
In accordance with another aspect of the present invention, there is provided a dish washer which has a washing vessel provided with an opening in its side wall, any one of the preceding wash water spouting apparatuses disposed outside of the opening of the washing vessel, and a casing enclosing the wash water spouting apparatus and the opening.
In accordance with another aspect of the present invention, there is provided a dish washer which has a washing vessel disposed continuously with a kitchen sink and provided with an opening in its side wall, any one of the preceding wash water spouting apparatuses disposed outside of the opening of the washing vessel, and a casing enclosing the wash water spouting apparatus and the opening.
In accordance with a preferred embodiment of the present invention, the wash water spouting apparatus is inclined so as to spout the wash water diagonally and downwardly toward the bottom of the washing vessel.
In accordance with a preferred embodiment of the present invention, the dish washer has an air blowing apparatus for blowing air to form an air curtain above the wash water spouted in the washing vessel.
In accordance with another aspect of the present invention, there is provided a dish washer which has a casing supported by the 21~33 upper rim of a kitchen sink to be movable horizontally and provided with an opening in its side wall, and any one of the preceding wash water spouting apparatuses disposed in the casing.
In accordance with another aspect of the present invention, there is provided a dish washer which has a box provided with a movable cover and an inner space for receiving dishes, any one of the preceding wash water spouting apparatuses disposed in the box, and a controlling apparatus for periodically reversing the rotation of the driving apparatus of the wash water spouting apparatus.
In accordance with another aspect of the present invention, there is provided a dish washer which has a box provided with a movable cover , an inner space for receiving dishes and an opening in its side wall, any one of the preceding wash water spouting apparatuses disposed outside of the opening of the box, a casing enclosing the wash water spouting apparatus and the opening, a turntable disposed in the box, and a driving apparatus for periodically reversing the rotation of the turntable.
[BRIEF DESCRIPTION OF DRAWINGS]
Figure 1 is a sectional view of a first embodiment of the wash water spouting apparatus according to the present invention.
Figure 2 is a plan view of a disk showing the measurement conditions used for determining the volume distribution of the wash water spouting from the outer periphery of the disk of the first embodiment of the wash water spouting apparatus according to the present invention.
Figure 3 is a diagram showing the volume distribution of the wash water spouting from the outer periphery of the disk of the first embodiment of the wash water spouting apparatus according to the present invention.

4 3 ~

Figure 4 is a sectional view of a second embodiment of the wash water spouting apparatus according to the present invention.
Figure 5(a), 5(b) are plan views of disks showing the measurement conditions used for determining the spouting force of the first embodiment of the wash water spouting apparatus according to the present invention and the spouting force of the second embodiment of the wash water spouting apparatus according to the present Invention.
Figure 6 is a sectional view of a third embodiment of the wash water spouting apparatus according to the present invention.
Figure 7 is a sectional view of the outer periphery of the disk showing the state of the wash water spouting from the outer periphery of the disk of the third embodiment of the wash water spouting apparatus according to the present invention.
Figure 8 is a plan view of the disk of the first embodiment of the wash water spouting apparatus according to the present invention showing the measurement conditions used for determining the particle sizes of the waterdrops spouting from the wash water spouting apparatus.
Figure 9 is a sectional view of a fourth embodiment of the wash water spouting apparatus according to the present invention.
Figure 10 is an exploded perspective view of the stacked body made of a disk and annular plates of the fourth embodiment of the wash water spouting apparatus according to the present invention.
Figure 11(a), 11(b) are plan views of disks showing the measurement conditions used for determining the spouting force of the first embodiment of the wash water spouting apparatus according to the present invention and the spouting force of the fourth embodiment of the wash water spouting apparatus according to the present invention.

Figure 12 is a sectional view of a fifth embodiment of the wash -- 21~43~

g water spouting apparatus according to the present invention.
Figure 13 is an exploded perspective view of the stacked body made of a disk and annular plates of the fifth embodiment of the wash water spouting apparatus according to the present invention.
Figure 14 is a plan view of a disk showing the measurement conditions used for determining the spouting force of the fifth embodiment of the wash water spouting apparatus according to the present invention.
Figure 15 is a perspective view of a wash water spouting apparatus water supply nozzle according to a sixth embodiment of the present invention.
Figure 16 is a sectional view of a seventh embodiment of the wash water spouting apparatus according to the present invention.
Figure 17 is an exploded perspective view of the stacked body made of a disk and annular plates of the seventh embodiment of the wash water spouting apparatus according to the present invention.
Figure 18 is a sectional view of a eighth embodiment of the wash water spouting apparatus according to the present invention.
Figure 19 is an exploded perspective view of the stacked body made of a disk and annular plates of the eighth embodiment of the wash water spouting apparatus according to the present invention.
Figure 20 is a sectional view of a ninth embodiment of the wash water spouting apparatus according to the present invention.
Figure 21 is an exploded perspective view of the stacked body made of disks and a guide box of the ninth embodiment of the wash water spouting apparatus according to the present invention.
Figure 22 is a sectional view of a tenth embodiment of the wash water spouting apparatus according to the present invention.
Figure 23 is an exploded perspective view of the stacked body 2~5433 made of disks of the tenth embodiment of the wash water spouting apparatus according to the present invention.
Figure 24 is a perspective view of a first embodiment of the dish washer according to the present invention.
Figure 25 is a partial sectional view of the first embodiment of the dish washer according to the present invention.
Figure 26 is a plan view of a second embodiment of the dish washer according to the present invention.
Figure 27 is a sectional view of the second embodiment of the dish washer according to the present invention.
Figure 28 is a sectional view of a third embodiment of the dish washer according to the present invention.
Figure 29 is a sectional view of a fourth embodiment of the dish washer according to the present invention.
[THE BEST MODE FOR CARRYING OUT THE INVENTION]
Wash water spouting apparatuses according to the preferred embodiments of the present invention and dish washers having the wash water spouting apparatuses will be described.
[WASH WATER SPOUTING APPARATUS]
(1) First embodiment As shown in Figure 1, a wash water spouting apparatus 1 has a disk 2, a motor 3 for rotating the disk 2 around its central axis X1, and wash water supply nozzles 4, 5 for supplying opposite surfaces of the disk 2 with wash water. The wash water supply nozzles 4, 5 are united at their base. The united base is connected to a water supply pipe which is not shown.
As shown in Figures 1 and 2, discharging ports 4a, 5a of the wash water supply nozzles 4, 5 are opposed to a portion of the disk 2 radially outwardly offset from its central axis X1.

21~433 The operation of the wash water spouting apparatus 1 is as follows.
The disk 2 is rotated by the motor 3 in the direction indicated by arrows in Figure 2. The wash water supply nozzles 4, 5 supply opposite surfaces of the disk 2 with wash water through the discharging ports 4a, 5a. The wash water is imparted with shear force from the disk 2 and accelerated in the rotating direction of the disk 2. As indicated by dashed lines in Figure 2, the wash water forms a water film and flows radially outwardly on each surface of the disk 2, describing a spiral locus in accordance with the law of inertia and spreading into a sector form. The water film reaches the outer periphery of the disk 2 before it spreads to a wide sector form because the discharging ports 4a, 5a of the wash water supply nozzles 4, 5 are opposed to a portion of the disk 2 radially outwardly offset from its central axis Xl.
As indicated by the dashed lines in Figure 2, the water film spouts radially outwardly at high speed concentratedly from a rather narrow circumferential region a of the outer periphery of the disk 2.
The water film which has spouted radially outwardly from the circumferential region ~ of the outer periphery of the disk 2 spreads into a sector form and breaks into a large number of waterdrops. If an object to be washed is placed radially outside of the region a, the waterdrops produced by the breakup of the water film collide against and wash the object.
The location and the extent of the region a is determined by the distance that the discharging ports 4a, 5a of the wash water supply nozzles 4, 5 are radially outwardly offset from the central axis Xl of the disk 2. If the radially outward offset of the discharging ports 4a, 5a from the central axis Xl of the disk 2 is 2 ~ 3 small, the regiona extends over the whole circumferential length of the outer periphery of the disk 2. As the radially outward offset of the discharging ports 4a, 5a from the central axis X1 of the disk 2 increases, the region a moves toward the discharging ports 4a, 5a and the extent of the region a narrows.
The wash water spouting apparatus 1 according to the first embodiment was fabricated. As shown in Figure 2, the diameter of the disk 2 was set at 130mm, the size of the discharging ports 4a, 5a was set at lmm (circumferential) x 5mm (radial), the radial distance between the discharging ports 4a, 5a and the central axis X1 of the disk 2 was set at 55mm, the distance between the discharging ports 4a, 5a and the surfaces 2a, 2b of the disk 2 was set at 2mm, and the disk 2 was made of ABS (acrylonitrile-butadiene-styrene copolymer) The disk 2 was rotated at 8000 rpm. Wash water (city water) was supplied onto the surfaces 2a, 2b of the disk 2 at the flow rate of 3 ~
/minute. The volume distribution of the spouting wash water along the outer periphery of the disk 2 was measured. The measured volume distribution of the spouting wash water along the outer periphery of the disk 2 is shown in Figure 3. From Figure 3, it is understood that the wash water spouted concentratedly from a particular circumferential region of the disk 2.
As indicated by dashed lines in Figure 1, the wash water spouting from the outer periphery of the surface 2a of the disk 2 and the wash water spouting from the outer periphery of the surface 2b of the disk 2 draw near each other and converge because the pressure in the space ~ between the spouting wash waters becomes negative. The converged waterdrops of the wash water, which have large kinetic energy per volume, can efficiently wash an object.
In the wash water spouting apparatus 1, the motor 3 only rotates 215~433 the disk 2 and does not highly pressurize the wash water. Thus, the motor 3 of the wash water spouting apparatus 1 need not be as large as the pump driving motors used in conventional pressure type wash water spouting apparatuses. Thus, the wash water spouting apparatus 1 can be made smaller than conventional pressure type wash water spouting apparatuses. A dish washer provided with the wash water spouting apparatus 1 is smaller, lower in production cost and running cost, and less noisy than conventional dish washers provided with pressure type wash water spouting apparatuses.
In the wash water spouting apparatus 1, there is no need for disposing a pump and a high pressure spouting nozzle or for disposing a reservoir tank between a water supply pipe and the pump. Thus, the structure of the wash water spouting apparatus 1 is simpler than those of conventional pressure type wash water spouting apparatuses.
A dish washer provided with the wash water spouting apparatus 1 is simpler in structure and lower in production cost and running cost than conventional dish washers provided with pressure type wash water spouting apparatuses.
In the wash water spouting apparatus 1, the discharging ports 4a, 5a of the wash water supply nozzles 4, 5 are opposed to a portion of the disk 2 radially outwardly offset from its central axis X1.
Thus, the wash water supplied onto the disk 2 through the discharging ports 4a, 5a spouts radially outwardly at high speed from a rather narrow circumferential region a of the outer periphery of the disk 2.
The concentrated waterdrops of wash water, which have large kinetic energy per volume, can efficiently wash an object.
(2) Second embodiment As shown in Figure 4, a wash water spouting apparatus 10 has a stacked body 13 made of two disks 11, 12 which are stacked coaxially ~ 2~S~33 with and separated from each other and united as a single body, a motor 14 for rotating the stacked body 13 around its central axis X2 and wash water supply nozzles 15, 16, 17 for supplying opposite surfaces of the disks 11, 12 with wash water. The wash water supply nozzles 15, 16, 17 are united at their base. The united base is connected to a water supply pipe which is not shown.
As shown in Figure 4, discharging ports 15a, 16a, 17a of the wash water supply nozzles 15, 16, 17 are opposed to portions of the disks 11, 12 radially outwardly offset from their central axis X2.
The operation of the wash water spouting apparatus 10 is as follows.
The stacked body 13, and so the disks 11, 12 are rotated by the motor 14. The wash water supply nozzles 15, 16, 17 supply opposite surfaces of the disks 11, 12 with wash water through the discharging ports 15a, 16a, 17a. The wash water is imparted with shear force from the disks 11, 12 and accelerated in the rotating direction of the disks 11, 12. The wash water forms a water film and flows radially outwardly on each surface of the disks 11, 12, describing a spiral locus in accordance with the law of inertia and spreading into a sector form. The water films of the wash water spout radially outwardly at high speed concentratedly from rather narrow circumferential regions of the outer peripheries of the disks 11, 12.
The water films of the wash water which have concentratedly spouted radially outwardly from the rather narrow circumferential regions of the outer peripheries of the disks 11, 12 spread into sector forms and break into a large number of waterdrops. The waterdrops produced by the breakup of the water films collide against and wash the object to be washed, which is placed radially outside of the rather narrow circumferential regions.

21S5~3 As indicated by dashed lines in Figure 4, the wash water spouting from the outer periphery of the surface 11a of the disk 11, the wash water spouting from the outer periphery of the surface llb of the disk 11, the wash water spouting from the outer periphery of the surface 12a of the disk 12 and the wash water spouting from the outer periphery of the surface 12b of the disk 12 draw near each other and converge because the pressures in the spaces r , ~ , ~ between the spouting wash waters become negative. The converged waterdrops of the wash water, which have large kinetic energy per volume, can efficiently wash the object.
For the same rotation speed and the same water consumption, the wash water spouting apparatus 10 of the second embodiment having two disks 11, 12 has a larger wash water spouting force than the wash water spouting apparatus 1 of the first embodiment having a single disk 2. The reason for this is thought to be that the increase in the number of disks causes a reduction in the water consumption per disk, a reduction in the slip of the wash water supplied onto the disk relative to the rotating disk, and thus an increase in the speed of the wash water which spouts from the outer periphery of the disk.
The wash water spouting apparatus 1 according to the first embodiment was fabricated. As shown in Figure 5(a), the diameter of the disk 2 of the wash water spouting apparatus 1 was set at 130mm, the thickness of the disk 2 was set at 3mm, the size of the discharging port 4a was set at 2mm (circumferential)xl4mm (radial), the radial distance between the discharging port 4a and the central axis Xl was set at 55mm, the distance between the discharging port 4a and the surface 2a of the disk 2 was set at 2mm, and the disk 2 was made of ABS. The discharging port 5a was closed. The disk 2 was rotated at 8000 rpm. Wash water (city water) was supplied onto the -- 2~5~3 surface 2a of the disk 2 at the flow rate of 6~ /minute through the discharging port 4a. A push-pull gauge 300 provided with a 50mmx 85mm plate made of acrylate resin was moved along a circular arc radially outwardly offset from the outer periphery of the disk 2 by 125mm so as to measure the wash water spouting force of the wash water spouting apparatus 1 at a position radially outwardiy offset from the outer periphery of the disk 2 by 125mm. The measured maximum value of the wash water spouting force was 90gf.
The wash water spouting apparatus 10 according to the second embodiment was fabricated. As shown in Figure 5(b), the diameters of the disks 11, 12 of the wash water spouting apparatus 10 were set at 130mm, the thicknesses of the disks 11, 12 were set at 3mm, the distance between the disks 11, 12 was set at 10mm, the sizes of the discharging ports 15a, 16a ,17a were set at lmm (circumferential) X
5mm (radial), the radial distances between the discharging ports 15a, 16a, 17a and the central axis X2 were set at 55mm, the distances between the discharging ports 15a, 16a, 17a and the surfaces 11a, 11b, 12a, 12b of the disks 11, 12 were set at 2mm, and the disks 11, 12 were made of ABS. The disks 11, 12 were rotated at 8000 rpm. Wash water (city water) was supplied onto the surfaces 1la, 1lb, 12a, 12b of the disks 11, 12 at the flow rate of 6 ~ /minute through the discharging ports 15a, 16a, 17a. A push-pull gauge 300 provided with a 50mmx 85mm plate made of acrylate resin was moved along a circular arc radially outwardly offset from the outer peripheries of the disks 11, 12 by 125mm so as to measure the wash water spouting force of the wash water spouting apparatus 10 at a position radially outwardly offset from the outer peripheries of the disks 11, 12 by 125mm. The measured maximum value of the wash water spouting force was 195gf.
In the wash water spouting apparatus 10, as in the wash water 4 ~ ~

spouting apparatus 1, the motor 14 only rotates the disks 11, 12 and does not highly pressurize the wash water. Thus, the motor 14 need not be as large as the pump driving motors used in conventional pressure type wash water spouting apparatuses. Thus, like the wash water spouting apparatus 1, the wash water spouting apparatus 10 is smaller than conventional pressure type wash water spouting apparatuses. A dish washer provided with the wash water spouting apparatus 10 can be made smaller, is lower in production cost and running cost, and is less noisy than conventional dish washers provided with pressure type wash water spouting apparatuses.
In the wash water spouting apparatus 10, as in the the wash water spouting apparatus 1, there is no need for disposing a pump and a high pressure spouting nozzle or for disposing reservoir tank between a water supply pipe and the pump. Thus, like the wash water spouting apparatus 1, the wash water spouting apparatus 10 is simpler in structure than conventional pressure type wash water spouting apparatuses. A dish washer provided with the wash water spouting apparatus 10 is simpler in structure and lower in production cost and running cost than conventional dish washers provided with pressure type wash water spouting apparatuses.
In the wash water spouting apparatus 10, as in the wash water spouting apparatus 1, the discharging ports 15a, 16a, 17a of the wash water supply nozzles 15, 16, 17 are opposed to portions of the disks 11, 12 radially outwardly offset from their central axis X2. Thus, the wash water supplied onto the disks 11, 12 through the discharging ports 15a, 16a, 17a concentratedly spouts radially outwardly from rather narrow circumferential regions of the outer peripheries of the disks 11, 12. The concentrated waterdrops of wash water, which have large kinetic energy per volume, can efficiently wash an object.

The wash water spouting apparatus 10 having two disks 11, 12 has a larger wash water spouting force than the wash water spouting apparatus 1 having a single disk 2. Thus, the wash water spouting apparatus 10 can wash an object more efficiently than the wash water spouting apparatus 1.

(3) Third embodiment As shown in Figure 6, a wash water spouting apparatus 20 has a stacked body 23 made of two disks 21, 22 which are stacked coaxially with and separated from each other and united as a single body, a motor 24 for rotating the stacked body 23 around its central axis X3, a wash water supply nozzle 25 for supplying the surface 21a of the disk 21 with wash water, and wash water supply nozzles 26, 27 for supplying the surface 21b of the disk 21 and the surfaces 22a, 22b of the disk 22 with wash water. The outer peripheral edge of the surface 21a of the disk 21 is rounded into a circular arc shape. The wash water supply nozzles 26, 27 are united at their base. The wash water supply nozzle 25 and the united base of the wash water supply nozzles 26, 27 are connected to a water supply pipe which is not shown.
As shown in Figure 6, discharging ports 25a, 26a, 27a of the wash water supply nozzles 25, 26, 27 are opposed to portions of the disks 21, 22 radially outwardly offset from their central axis X3.
In the wash water spouting apparatus 20, as indicated by dashed lines in Figure 7, the wash water supplied onto the surface 21a of the disk 21 flows along the circular arc shaped rounded edge toward the surface 21b at the outer periphery of the surface 21a and dispersively spouts radially outwardly at high speed. Thus, the wash water supplied onto the surface 21a of the disk 21 breaks into small waterdrops. On the other hand, the wash water supplied onto the 2 1 ~

surface 21b of the disk 21 and the surfaces 22a, 22b of the disk 22, not dispersively but rather concentratedly, spouts radially outwardly at high speed from the outer peripheries of the surfaces 21b, 22a and 22b. Thus, the wash water supplied onto the surface 21b of the disk 21 and the surfaces 22a, 22b of the disk 22 break into large waterdrops. Thus, in the wash water spouting apparatus 20, the size of the spouting waterdrops can be changed by selectively supplying the water through the wash water supply nozzle 25 and through the wash water supply nozzles 26, 27.
Besides from the above differences, the operation of the wash water spouting apparatus 20 is the same as that of the wash water spouting apparatus 10.
The wash water spouting apparatus 1 according to the first embodiment was fabricated. As shown in Figure 8, the disk 2 was made of ABS, the diameter of the disk 2 was set at 150mm, the thickness of the disk 2 was set at 3mm, the size of the discharging port 4a was set at 2mm (circumferential)x14mm (radial), the radial distance between the discharging port 4a and the central axis X1 was set at 60mm, the distance between the discharging port 4a and the surface 2a of the disk 2 was set at 2mm, and the outer peripheral edge of the surface 2a of the disk 2 was rounded into a circular arc shape of 3mm radius. The discharging port 5a was closed. The disk 2 was rotated at 5000 rpm. Wash water (city water) was supplied onto the surface 2a of the disk 2 at the flow rate of 3.5 ~ /minute through the discharging port 4a. A Petri dish 400 applied with silicone oil was moved along a circular arc radially outwardly offset from the outer periphery of the disk 2 by 800mm so as to collect the waterdrops spouting from the disk 2. The waterdrops adhering to the Petri dish were photographed and the size of the waterdrops were measured from 21~433 the photograph. The average value of the diameters of the waterdops was 0.5mm.
When waterdrops were spouted from the disk 2 under the same conditions as above, except that the outer peripheral edge of the surface 2a of the disk 2 was not rounded, average value of the diameters of the waterdops was 1.2mm.

(4) Fourth embodiment As shown in Figures 9 and 10, a wash water spouting apparatus 30 has a stacked body 36 made of a disk 31, two annular plates 32, 33 which have substantially the same outer diameters as the disk 31 and are disposed to face opposite surfaces of the disk 31, thin spacers 34 disposed between the disk 31 and the annular plates 32, 33, and screws 35a and nuts 35b for connecting the disk 31, the annular plates 32, 33 and the spacers 34 as a unitary body, a motor 37 for rotating the stacked body 36 around its central axis X4 and wash water supply nozzles 38, 39 for supplying the surfaces 31a, 31b of the disk 31 with wash water. The wash water supply nozzles 38, 39 are united at their base. The united base of the wash water supply nozzles 38, 39 is connected to a water supply pipe which is not shown.
As shown in Figure 9, discharging ports 38a, 39a of the wash water supply nozzles 38, 39 are opposed to a portion of the disk 31 radially outwardly offset from its central axis X4.
The operation of the wash water spouting apparatus 30 is as follows.
The stacked body 36, and so the disk 31 are rotated by the motor 37. The wash water supply nozzles 38, 39 supply the surfaces 31a, 31b of the disk 31 with wash water through the discharging ports 38a, 39a. The wash water is imparted with shear force from the disk 31 and accelerated in the rotating direction of the disk 31. The wash water ~1554~3 forms water films and flows radially outwardly on the disk 31, describing a spiral locus in accordance with the law of inertia and spreading into a sector form. The water films approach the outer periphery of the disk 31 before they spread in wide sector forms because the discharging ports 38a, 39a of the wash water supply nozzles 38, 39 are opposed to a portion of the disk 31 radially outwardly offset from its central axis X4. When they reach the outer periphery of the disk 31, the water films flow into narrow annular spaces between the disk 31 and the annular plates 32, 33. Thus, rather narrow circumferential regions of the narrow annular spaces are filled with the wash water. The wash water in the rather narrow circumferential regions of the narrow annular spaces is imparted with shear force from the disk 31 and the annular plates 32, 33 so as to be more accelerated in the rotating direction of the disk 31. The accelerated wash water spouts radially outwardly at high speed from the outer peripheries of the rather narrow circumferential regions of the narrow annular spaces. The water films spouting radially outwardly from the outer peripheries of the rather narrow circumferential regions of the narrow annular spaces spread into sector forms and break into a large number of waterdrops. The waterdrops produced by the breakup of the water films collide against and wash the object to be washed, which is placed radially outside of the rather narrow circumferential regions.
The spouting force of the wash water spouting apparatus 30 is larger than that of the wash water spouting apparatus 1 because the wash water in the narrow annular spaces between the disk 31 and the annular plates 32, 33 is imparted with shear force from the disk 31 and the annular plates 32, 33 and accelerated in the rotating direction of the disk 31.

The wash water spouting apparatus 1 according to the first embodiment was fabricated as As shown in Figure 11(a). The diameter of the disk 2 was set at 130mm, the thickness of the disk 2 was set at 3mm, the size of the discharging port 4a was set at 2mm (circumferential)x14mm (radial), the radial distance between the discharging port 4a and the central axis X1 was set at 55mm, the distance between the discharging port 4a and the surface 2a of the disk 2 was set at 2mm, and the disk 2 was made of ABS. The discharging port 5a was closed. The disk 2 was rotated at 8000 rpm.
Wash water (city water) was supplied onto the surface 2a of the disk 2 at the flow rate o~ 6~ /minute through the discharging port 4a. A
push-pull gauge 300 provided with a 50mmx 85mm plate 200 made of acrylate resin was moved along a circular arc radially outwardly offset from the outer periphery of the disk 2 by 125mm so as to measure the wash water spouting force of the wash water spouting apparatus 1 at a position radially outwardly offset from the outer periphery of the disk 2 by 125mm. The measured maximum value of the wash water spouting force was 90gf.
The wash water spouting apparatus 30 according to the fourth embodiment was fabricated as As shown in Figure 11(b). The diameter of the disk 31 of the wash water spouting apparatus 30 was set at 130mm, the thickness of the disk 31 was set at 3mm, the outer diameters of the annular plates 32, 33 were set at 130mm, the inner diameters of the annular plates 32, 33 were set at 90mm, the thicknesses of the annular plates 32, 33 were set at 3mm, the distances between the disk 31 and the annular plates 32, 33 were set at 0.6mm, the sizes of the discharging port 38a was set at 2mm (circumferential)x14mm (radial), the radial distance between the discharging port 38a and the central axis X4 of the disk 31 was set 21~5433 at 38mm, the distance between the discharging port 38a and the surface 31a of the disk 31 was set at 2mm, and the disk 31 and the annular plates 32, 33 were made of ABS. The discharging port 39a was closed. The disk 31 was rotated at 8000 rpm. Wash water (city water) was supplied onto the surface 31a of the disk 31 at the flow rate of 6~ /minute through the discharging port 38a. A push-pull gauge 300 provided with a 50mm x 85mm plate 200 made of acrylate resin was moved along a circular arc radially outwardly offset from the outer periphery of the disk 31 by 125mm so as to measure the wash water spouting force of the wash water spouting apparatus 30 at a position radially outwardly offset from the outer periphery of the disk 31 by 125mm. The measured maximum value of the wash water spouting force was 100gf.
In the present embodiment, a plurality of stacked bodies 36 may be disposed coaxially and connected as a unitary body. The wash water spouting force of the wash water spouting apparatus 30 is higher when it is provided with a plurality of stacked bodies 36 than when it is provided with only one stacked body 36.

(5) Fifth embodiment As shown in Figures 12 and 13, a wash water spouting apparatus 40 has a stacked body 45 made of a disk 41, two annular plates 42, 43 which have substantially the same outer diameters as the disk 41 and are disposed to face opposite surfaces of the disk 41, and a plurality of thin radial blades 44 disposed on either side of the disk 41 between the disk 41 and the annular plates 42, 43 which are adhered with each other to be connected as a unitary body, a motor 46 for rotating the stacked body 45 around its central axis X5 and wash water supply nozzles 47, 48 for supplying the surfaces 41a, 41b of the disk 41 with wash water. The wash water supply nozzles 47, 48 are a~43~

united at their base. The united base of the wash water supply nozzles 47, 48 is connected to a water supply pipe which is not shown.
As shown in Figure 12, discharging ports 47a, 48a of the wash water supply nozzles 47, 48 are opposed to a portion of the disk 41 radially outwardly offset from its central axis X5.
In the wash water spouting apparatus 40, the wash water flows int o narrow annular spaces between the disk 41 and the annular plates 42, 43. Thus, rather narrow circumferential regions of the narrow annular spaces are filled with the wash water. The wash water in the rather narrow circumferential regions of the narrow annular spaces is imparted with shear force from the disk 41 and the annular plates 42, 43 and accelerated in the rotating direction of the disk 41. The slip of the wash water relative to the disk 41, and the annular plates 42, 43 which occurs when the wash water is accelerated in the rotating direction of the disk 41 is restricted by the radial blades 44. Thus, in the wash water spouting apparatus 40, the wash water in the narrow spaces is accelerated up to higher speed than in the wash water spouting apparatus 30. Thus, the wash water spouting force of the wash water spouting apparatus 40 is larger than that of the wash water spouting apparatus 30.
The wash water spouting apparatus 40 was fabricated as shown in Figure 14. The diameter of the disk 41 was set at 130mm, the thickness of the disk 41 was set at 3mm, the outer diameters of the annular plates 42, 43 were set at 130mm, the inner diameters of the annular plates 42, 43 were set at 90mm, the thicknesses of the annular plates 42, 43 were set at 3mm, the distances between the disk 41 and the annular plates 42, 43 were set at 3mm, the circumferential lengths of the radial blades 44 were set at 1mm, the radial lengths of the radial blades 44 were set at 1Omm, the distances between the outer 54~3 ends of the radial blades 44 and the outer periphery of the disk 41 were set at 5mm, the number of the radial blades 44 was set at 18, the circumferential pitch of the radial blades 44 was set at 20 , the size of the discharging port 47a was set at at 2mm (circumferential)xl4mm (radial), the radial distance between the discharging port 47a and the central axis k5 of the disk 41 was set at 38mm, the distance between the discharging port 47a and the surface 41a of the disk 41 was set at 2mm, and the disk 41 and the annular plates 42, 43 were made of ABS. The discharging port 48a was closed. The disk 41 was rotated at 8000 rpm. Wash water (city water) was supplied onto the surface 41a of the disk 41 at the flow rate of 6~ /minute through the discharging port 47a. A push-pull gauge 300 provided with a 50mm X 85mm plate 200 made of acrylate resin was moved along a circular arc radially outwardly offset from the outer periphery of the disk 41 by 125mm so as to measure the wash water spouting force o~ the wash water spouting apparatus 40 at a position radially outwardly offset from the outer periphery of the disk 41 by 125mm. The measured maximum value of the wash water spouting force was 130gf.
In the present embodiment, a plurality of stacked bodies 45 may be disposed coaxially and connected as a unitary body. The wash water spouting force of the wash water spouting apparatus 40 is higher when it is provided with a plurality of stacked bodies 45 than when it is provided with only one stacked body 45.

(6) Sixth embodiment As shown in Figure 15, in the first to the fifth embodiments, the discharging ports 4a, 5a, 15a, 16a, 17a, 25a, 26a, 27a, 38a, 39a, 47a, 48a of the wash water supply nozzles 4, 5, 15, 16, 17, 25, 26, 27, 38, 39, 47, 48 may be directed in the rotating direction of the ~155~33 disks 2, 11, 21, 22, 31, 41 indicated by an arrow and inclined relative to the disks 2, 11, 21, 22, 31, 41 by an appropriate angle ~ . Thus, the wash water which discharged from the discharging ports 4a, 5a, 15a, 16a, 17a, 25a, 26a, 27a, 38a, 39a, 47a, 48a can smoothly land on the disks 2, 11, 21, 22, 31, 41 and smoothly form water films on the disks 2, 11, 21, 22, 31, 41 and the rotation of the disks 2, 11, 21, 22, 31, 41 can be smoothly transmitted to the wash water.
As shown in Figure 15, in the first to the fifth embodiments, the discharging ports 4a, 5a, 15a, 16a, 17a, 25a, 26a, 27a, 38a, 39a, 47a, 48a of the wash water supply nozzles 4, 5, 15, 16, 17, 25, 26, 27, 38, 39, 47, 48 may be made oval to have their major axes extend in radial direction of the disks 2, 11, 21, 22, 31, 41. This enables the wash water to be discharged from the discharging ports 4a, 5a, 15a, 16a, 17a, 25a, 26a, 27a, 38a, 39a, 47a, 48a so as to form water films and also enables the rotation of the the disks 2, 11, 21, 22, 31, 41 to be smoothly transmitted to the wash water.

(7) Seventh embodiment As shown in Figures 16 and 17, a wash water spouting apparatus 50 has a stacked body 57 made of a disk 51 provided with a cylindrical wall 51a at its center, three annular plates 52, 53, 54 which have substantially the same outer diameters as the disk 51 and are disposed on the same side of the disk 51 as the cylindrical wall 51a and coaxially with the disk 51, thin spacers 55 disposed between adjacent ones of the disk 51 and the annular plates 52, 53, 54, and screws 56a and nuts 56b for connecting the disk 51, the annular plates 52, 53, 54 and the spacers 55 as a unitary body, a motor 58 for rotating the stacked body 57 around its central axis X6 and a wash water supply nozzle 59 for supplying the space r between the cylindrical wall 51a and the inner peripheries of the annular plates -- 2~4~3 52, 53, 54 with wash water. The wash water supply nozzle 59 is connected to a water supply pipe which is not shown.
In the wash water spouting apparatus 50, the wash water is supplied into the space ~ between the cylindrical wall 51a and the inner peripheries of the annular plates 52, 53, 54. Thus, a portion of the space ~ near the wash water supply nozzle 59 is filled with the wash water. The wash water in the portion of the space ~ near the wash water supply nozzle 59 then flows into the narrow spaces between adjacent ones of the disk 51 and the annular plates 52, 53, 54. Thus, portions of the narrow spaces near the wash water supply nozzle 59 are filled with the wash water. The wash water in the narrow spaces near the wash water supply nozzle 59 is imparted with shear force from the disk 51, and the annular plates 52, 53, 54 and accelerated in the rotating direction of the disk 51. The accelerated wash water flows radially outwardly, describing a spiral locus and spreading into a sector form. Then, the wash water spouts radially outwardly at high speed from the outer peripheries of the narrow spaces.
The wash water spouting apparatus 50 has the same advantages as the wash water spouting apparatus 30 of the fourth embodiment.
In the wash water spouting apparatus 50, the wash water spouting force can be increased by increasing the number of the annular plates. While the wash water spouting force of the wash water spouting apparatus 30 can be also increased, this requires a plurality of the stacked bodies 36 to be disposed coaxially and greatly increases the axial size of the wash water spouting apparatus 30 because the wash water supply nozzles 38, 39 are disposed between the adjacent disks 31. In contrast, in the wash water spouting apparatus 50, the wash water supply nozzle 59 is not disposed between ~ 2~433 the adjacent annular plates. Thus, in the wash water spouting apparatus 50, even if the number of annular plates is increased to increase the wash water spouting force, the increase in the axial size of the wash water spouting apparatus is less than in the case of the wash water spouting apparatus 30 of the fourth embodiment.

(8) Eighth embodiment As shown in Figures 18 and 19, a wash water spouting apparatus 60 has a stacked body 67 made of a disk 61, three annular plates 62, 63, 64 which have substantially the same outer diameters as the disk 61 and are disposed on the side of the surface 61a of the disk 61 coaxially with the disk 61, thin spacers 65 disposed between adjacent ones of the disk 61 and the annular plates 62, 63, 64, and screws 66a and nuts 66b for connecting the disk 61, the annular plates 62, 63, 64 and the spacers 65 as a unitary body, a motor 68 for rotating the stacked body 67 around its central axis X7, and a wash water supply nozzle 69 for directly supplying narrow spaces between adjacent ones of the disk 61 and the annular plates 62, 63, 64 with wash water.
The wash water supply nozzle 69 is provided with wash water discharging ports 69a, 69b, 69c which are opposed to the narrow spaces between adjacent ones of the disk 61 and the annular plates 62, 63, 64. The wash water supply nozzle 69 is connected to a water supply pipe which is not shown.
In the wash water spouting apparatus 60, the wash water directly flows into the narrow spaces between adjacent ones of the disk 61 and the annular plates 62, 63, 64 through the wash water discharging ports 69a, 69b, 69c. Thus, all of the narrow spaces can be reliably supplied with wash water because the wash water directly flows into the narrow spaces through the wash water discharging ports 69a, 69b, 69c.

~ 21~433 The wash water spouting apparatus 60 has the same advantages as the wash water spoutlng apparatus 30 of the fourth embodiment.
In the wash water spouting apparatus 60, the wash water spouting force can be increased by increasing the number of the annular plates. While the wash water spouting force of the wash water spouting apparatus 30 can be also increased, this requires a plurality of the stacked bodies 36 to be disposed coaxially and greatly increases the axial size of the wash water spouting apparatus 30 because the wash water supply nozzles 38, 39 are disposed between the adjacent disks 31. In contrast, in the wash water spouting apparatus 60, the wash water supply nozzle 69 is not disposed between the ad~acent annular plates. Thus, in the wash water spouting apparatus 60, even if the number of annular plates is increased to increase the wash water spouting force, the increase in the axial size of the wash water spouting apparatus is less than in the case of the wash water spouting apparatus 30 of the fourth embodiment.

(9) Ninth embodiment Wash water spouting apparatus 70 in accordance with a ninth embodiment of the present invention has the following structure.
As shown in Figures 20 and 21, three disks 71a, 71b, 71c are disposed coaxially with each other. A driving shaft 71a1 is fixed to the center of the disk 71a. The disk 71b is provided with a small diameter opening 71b1 at its center. A small diameter pipe 71b2 which communicates the opening 71bl at one end is fixed to the disk 71b.
The disk 71c is provided with a large diameter opening 71 Cl at its center. A large diameter pipe 71c2 which communicates the opening 71c 1 at one end is fixed to the disk 71c. The disks 71a, 71b, 71c are stacked with thin spacers 72 inserted between them and the small diameter pipe 71b2 is inserted into the large diameter pipe 71c2.

The disks 71a, 71b, 71c are connected as a unitary body by screws 73a and nuts 73b to form a stacked body 74.
The stacked body 74 is disposed in a guide box 75, which is constituted by two annular plates 75a, 75b, three sector-shaped thick guide plates 75c disposed in a ring-like shape with guide spaces between them, and screws 75d and nuts 75e for connecting the above members as a unitary body.
A casing 76 is constituted by a cylindrical upper casing 76a provided with an opening 76a~ at the center of its top plate and an opening 76a2 in its side wall, a cylindrical lower casing 76b provided with a bottom plate to define a wash water tank, and a connecting member (not shown) for connecting the above members as a unitary body. The lower casing 76b is connected to a water supply pipe (not shown) through a valve (not shown).
The guide box 75 accommodating the stacked body 74 is disposed in the upper casing 76a. The guide box 75 is supported by the upper casing 76a to be rotatable around the central axis X8 of the stacked body 74. The driving shaft 71al of the stacked body 74 extends out of the casing 76 through the opening 76a1 of the upper casing 76a.
The driving shaft 71a1 is supported by the upper casing 76a to be rotatable around the central axis X8 of the stacked body 74. The portion of the driving shaft 71a1 which extends out of the casing 76 is operatively connected to an output shaft 78a of a motor 78 through a belt 77. Thus, torque can be transmitted to the driving shaft 71a, from the output shaft 78a. The small diameter pipe 71b2 and the large diameter pipe 71c2 extend into the lower casing 76b and into wash water W1 stored in the lower casing 76b.

In the wash water spouting apparatus 70, rotation of the disks 71a, 71b, 71c produces negative pressures in narrow spaces between 2~5~433 the disks 71a and 71b, and the disks 71b and 71c. The negative pressures cause the wash water W1 in the lower casing 76b to be sucked into an annular space between the large diameter pipe 71c2 and the small diameter pipe 71b2, and into the small diameter pipe 71b2. The wash water which is sucked into the annular space between the large diameter pipe 71c2 and the small diameter pipe 71b2 flows through the annular space and into the central portion of the narrow space between the disk 71b and the disk 71c. The wash water which is sucked into the small diameter pipe 71b2 flows through the pipe and into the central portion of the narrow space between the disk 71a and the disk 71b.
The wash water which has flowed into the central portion of the narrow space between the disks 71b and 71c is accelerated by the disks 71b and 71c in the rotating direction of the disks 71b and 71c and flows radially outwardly toward the outer periphery of the narrow space, describing a spiral locus. The wash water which has flowed into the central portion of the narrow space between the disks 71a and 71b is accelerated by the disks 71a and 71b in the rotating direction of the disks 71a and 71b and flows radially outwardly toward the outer periphery of the narrow space, describing a spiral locus.
The wash water which has reached the outer peripheries of the narrow spaces spouts uniformly and radially outwardly at high speed from the whole circumferences of the outer peripheries of the narrow spaces. A portion of the wash water which has spouted uniformly and radially outwardly from the whole circumferences of the outer peripheries of the narrow spaces spouts radially outwardly at high speed from the guide box 75 directly through the guide spaces ~ of the guide box 75. The remaining portion of the wash water which has spouted uniformly and radially outwardly from the whole 21~ ~ 4 3 3 circumferences of the outer peripheries of the narrow spaces collides against the guide plates 75c and flows in the rotating direction of the disks 71a, 71b, 71c along the guide plates 75c and spouts radially outwardly at high speed from the guide box 75 through the guide spaces ~ of the guide box 75. Thus, the wash water which has spouted uniformly and radially outwardly from the whole circumferences of the outer peripheries of the narrow spaces between the disks 71a, 71b, 71c spouts radially outwardly at high speed concentratedly from the guide spaces ~ of the guide box 75.
The wash water which has spouted from the outer peripheries of the narrow spaces between the disks 71a, 71b, 71c and is flowing in the rotating direction of the disks 71a, 71b, 71c along the guide plates 75c drives and rotates the guide box 75 in the rotating direction of the disks 71a, 71b, 71c. When the guide box 75 rotates, successive guide spaces ~ come opposite the opening 76a2 of the upper casing 76a. As a result, the wash water which has spouted radially outwardly at high speed concentratedly from the successive guide spaces ~ of the guide box 75 spouts intermittently out of the casing 76 through the opening 76a2 of the upper casing 76a.
The concentrated waterdrops spouting from the guide spaces of the guide box 75 at high speed have large kinetic energy per volume and can efficiently wash the object.

(10) Tenth embodiment Wash water spouting apparatus 80 in accordance with a tenth embodiment of the present invention has the following structure.
As shown in Figures 22 and 23, tow disks 81a, 81b are disposed coaxially with each other. A driving shaft 81a1 is fixed to the center of the disk 81a. The disk 81b is provided with an opening 81 at its center. A pipe 81b2 which communicates the opening 81b1 at ~lS~4~3 one end is fixed to the disk 81b. Three sector-shaped thin guide plates 82 are disposed in a ring-like shape with guide spaces ~
inserted between them. The guide plates 82 are inserted between the disks 81a and 81b. The disks 81a, 81b and the guide plates 82 are connected as a unitary body by screws 83a and nuts 83b to form a stacked body 84.
A casing 85 is constituted by a cylindrical upper casing 85a provided with an opening 85a1 at the center of its top plate and an opening 85a2 in its side wall, a cylindrical lower casing 85b provided with a bottom plate to define a wash water tank, and a connecting member (not shown) for connecting the above members as a unitary body. The lower casing 85b is connected to a water supply pipe (not shown) through a valve (not shown).
The stacked body 84 is disposed in the upper casing 85a. The driving shaft 81a~ of the stacked body 84 extends out of the casing 85 through the opening 85a1 of the upper casing 85a. The driving shaft 81a1 is supported by the upper casing 85a to be rotatable around the central axis X9 of the stacked body 84. The portion of the driving shaft 81al which extends out of the casing 85 is operatively connected to an output shaft 87a of a motor 87 through a belt 86.
Thus, torque can be transmitted to the driving shaft 81a1 from the output shaft 87a. The pipe 81b2 of the stacked body 84 extends into the lower casing 85b and into wash water W2 stored in the lower casing 85b.
In the wash water spouting apparatus 80, rotation of the disks 81a, 81b produces negative pressure in a narrow space between the disks 81a and 81b. The negative pressure causes the wash water W2 in the lower casing 85b to be sucked into the pipe 81b2. The wash water which is sucked into the pipe 81b2 flows through the pipe and into ~ ~ 21~5433 the central portion of the narrow space between the disks 81a and 81b.
The wash water which has flowed into the central portion of the narrow space between the disks 81a and 81b is accelerated by the disks 81a and 81b in the rotating direction of the disks 81a and 81b and flows radially outwardly toward the outer periphery of the narrow space, describing a spiral locus.
A portion of the wash water which has reached the outer peripheral portion of the narrow space spouts radially outwardly at high speed directly through the guide spaces ~ between the guide plates 82. The remaining portion of the wash water which has reached the outer peripheral portion of the narrow space collides against the guide plates 82 and flows in the rotating direction of the disks 81a, 81b along the guide plates 82 and spouts radially outwardly at high speed through the guide spaces ~ between the guide plates 82. Thus, the wash water which has flowed toward the outer periphery of the narrow space between the disks 81a, 81b spouts radially outwardly at high speed concentratedly from the guide spaces ~ .
When successive guide spaces ~ , which rotate in a body with the disks 81a, 81b, come opposite the opening 85a2 of the upper casing 85a, the wash water which has spouted radially outwardly concentratedly from the guide spaces~ spouts intermittently out of the casing 85 through the opening 85a2 of the upper casing 85a.
The concentrated waterdrops spouting from the guide space have large kinetic energy per volume and can efficiently wash the object.
The wash water spouting apparatus 80 has an advantage ln that its structure is simpler than that of the wash water spouting apparatus 70.

Wash water spouting apparatuses in accordance with preferred ~ 2~433 embodiments of the present invention have been described. In the first to the tenth embodiments, the surfaces of the disks may be flat or convexly curved or concavely curved.
[ II ] DISH WASHER PROVIDED WITH WASH WATER SPOUTING APPARATUS
(1) First embodiment As shown in Figures 24 and 25, a concave kitchen sink 91 is disposed on the top of a kitchen counter 90. A dish washing vessel 92 which is deeper than the kitchen sink 91 is formed continuously adjacent to the sink 91. The dish washing vessel 92 is provided with a garbage filter 500 at its bottom. The dish washing vessel 92 is provided with an opening 92a in the upper part of its side wall.
A wash water spouting apparatus 10 in accordance with the second embodiment of the wash water spouting apparatus of the present invention is disposed outside of the opening 92a. The wash water spouting apparatus 10 is inclined. A stacked body 13 and wash water supply nozzles 15, 16, 17 of the wash water spouting apparatus 10 are disposed in a casing 93. The casing 93 has a cylindrical lower casing 93a which is open at its upper end and closed at its lower end, a flat upper casing 93b, a packing 93c disposed between the upper end of the lower casing 93a and the upper casing 93b, and connecting members (not shown) for connecting the above members as a unitary body. A motor 14 of the wash water spouting apparatus 10 is fixed to the bottom plate of the lower casing 93a. The wash water supply nozzles 15, 16, 17 are united at their base portion. The connected base portion of the wash water supply nozzles 15, 16, 17 extends out of the casing 93 through the bottom plate of the lower casing 93a and is connected to a mixing apparatus 94 for mixing hot water and cold water disposed in the kitchen counter 90. The lower casing 93a is provided with an opening 93d in its side wall. The -- ~5~33 opening 93d is located relative to the wash water supply nozzles 15, 16, 17 so that the wash water supplied onto the disks 11, 12 from the wash water supply nozzles 15, 16, 17 may spout from portions of the outer peripheries of the disks 11, 12 opposed to the opening 93d.
The casing 93 is fixed to the outer surface of the side wall of the dish washing vessel 92 with the opening 93d aligned with the opening 92a of the dish washing vessel 92.
The dish washing vessel 92 is provided with an opening 92b in the upper portion of its side wall and above the opening 92a. An air blow nozzle 95 is disposed outside of the opening 92b. The air blow nozzle 95 is fixed to the cover (upper casing) 93b of the casing 93 with its air discharging port 95a communicating with the opening 92b.
The air blow nozzle 95 is connected to an air curtain fan 96 for producing an air curtain.
A control unit 97 is disposed adjacent to the air curtain fan 96.
The casing 93, the air blow nozzle 95, the air curtain fan 96 and the control unit 97 are disposed in the kitchen counter 90.
Disposed on the top of the kitchen counter 90 and adjacent to the kitchen sink 91 are a single lever faucet 600, a temperature control handle 98 for controlling the temperature of the water supplied to the wash water supply nozzles 15-17, wash water spouting force select switches 99a (high), 99b (middle), 99c (low) for changing the rotation speed of the motor l 4 of the wash water spouting apparatus 10 so as to change the wash water spouting force of the wash water spouting apparatus 10, an on-off switch 100 of the air curtain fan 96, and an on-off switch (hand switch) 101 of the motor l 4 of the wash water spouting apparatus 10. An on-off switch (foot switch) 102 of the motor 14 of the wash water spouting apparatus ~155433 lO is disposed on the lower part of the front wall of the kitchen counter 90. Signals from the temperature control handle 98, the wash water spouting force select switches 99a, 99b, 99c and the on-off switches 100, 101, 102 are inputted to the control unit 97. Based on the inputted signals, the control unit 97 outputs control signals to the mixing apparatus 94, the air curtain fan 96 and the motor 14 of the wash water spouting apparatus 10 so as to control their operations.
A dish washer A1 is constituted by the dish washing vessel 92, the wash water spouting apparatus 10, the casing 93, the air blow nozzle 95, the air curtain fan 96, the control unit 97, the temperature control handle 98, the wash water spouting force select switches 99a, 99b, 99c, the on-off switch 100 of the air curtain fan 96, and the on-off switches 101, 102 of the motor 14 of the wash water spouting apparatus 10.
The operation of the dish washer A1 is as follows.
A user operates the temperature control handle 98 and the wash water spouting force select switches 99a, 99b, 99c so as to set the temperature of the wash water and the wash water spouting force at desired levels. Then the user operates one of the on-off switches 101, 102 of the motor 14 of the wash water spouting apparatus 10, and the on-off switch 100 of the air curtain 96 so as to start the motor 14 of the wash water spouting apparatus 10 and the air curtain fan 96.
The disks 11, 12 of the wash water spouting apparatus 10 rotate at a speed corresponding to the desired wash water spouting force.
The wash water of desired temperature is supplied onto the disks 11, 12 of the wash water spouting apparatus 10 through the wash water supply nozzles 15, 16, 17 of the wash water spouting apparatus 10.
The wash water supplied onto the disk 11 and that supplied onto the -- 215~433 disk 12 spout from the regions of the outer peripheries of the disks 11, 12 opposed to the opening 93d and then spout into the dish washing vessel 92 at high speed through the openings 93d and 92a. As shown by dashed lines in Figure 25, the sheets of wash water spouting into the dish washing vessel 92 at high speed draw near each other to converge and break into waterdrops. The converged waterdrops W3, which have large kinetic energy per volume, fly at high speed diagonally and downwardly toward the bottom of the dish washing vessel 92, collide with a dish S1 held into the dish washing vessel 92 by the user and promptly wash the dish S1. The waterdrops W3 fly diagonally and downwardly, so that uncomfortable upward scattering of the waterdrops W3 in the direction of the user is minimized. The waste water is discharged from the dish washing vessel 92 through the garbage filter 500.
The air curtain fan 96 operates and, as indicated by double arrows in Figure 25, blows air out ~rom the air blow nozzle 95 so as to form an air curtain C above the waterdrops W3. The air curtain C
prevents the waste water from scattering upward onto the user to make him ~eel uncom~ortable.
The dish washing vessel 92 is formed continuously adjacent to the kitchin sink 91, so that not only ordinary dishes but also all other kinds of various sized kitchen utensils such as large dishes, chopping boards, pans and kitchen knives, as well as various kinds of foods such as vegetables, fruits, fishes, etc., can be washed by the dish washer A1.
The wash water spouting apparatus 10, the casing 93, the air blow nozzle 95, the air curtain fan 96 and the control unit 97 are disposed in the kitchen counter 90, so that the wide top area of the kitchen counter 90 is left free for use by the user.

(2) Second embodiment As shown in Figures 26, 27, a concave kitchen sink 111, which is rectangular shaped as seen from the above, is disposed in the top of a kitchen counter 110. A casing 112 is supported to be movable horizontally in the longitudinal direction of the kitchen sink 111 by rollers 113 that ride on the top flange 111a of the kitchen sink 111.
The casing 112 is provided with an opening 112a in one of its side walls opposed to one of the short side walls of the kitchen sink 111 and an opening 112b in another one of its side walls opposed to the other one of the short side walls of the kitchen sink 111.
A wash water spouting apparatus 1 in accordance with the first embodiment of the wash water spouting apparatus of the present invention is disposed in the casing 112. The wash water spouting apparatus 1 has two sets of wash water supply nozzles each consisting of an upper nozzle 4 and a lower nozzle 5. The two sets of the wash water supply nozzles 4, 5 and 4, 5 are disposed so that they oppose each other with the central axis X1 of a disk 2 between them. The openings 112a, 112b of the casing 112 are located relative to the two sets of the wash water supply nozzles 4, 5 and 4, 5 so that the wash water supplied onto the disk 2 from one set of the wash water supply nozzles 4, 5 may spout from the portion of the outer periphery of the disk 2 opposed to the opening 112a, and the wash water supplied onto the disk 2 from the other set of the wash water supply nozzles 4, 5 may spout from the portion of the outer periphery of the disk 2 opposed to the opening 112b.
The wash water supply nozzles 4, 5 of each set are united at their base portion. The united base portion of the wash water supply nozzles 4, 5 of one set is connected to a flexible hose 115 through a valve 114a. The united base portion of the wash water supply nozzles 2~5~433 4, 5 of the other set is connected to the flexible hose 115 through a valve 114b. The operation of the valves 114a, 114b are controlled by a control unit (not shown). The flexible hose 115 is connected to a water supply pipe (not shown).
A dish washer A2 is constituted by the wash water spouting apparatus 1, the valves 114a, 114b, the casing 112 and the rollers 113.
In the dish washer A2, the wash water is supplied through the flexible hose 115, the valves 114a, 114b and the two sets of the wash water supply nozzles 4, 5 onto the disk 2 which is rotating in the direction indicated by a double arrow in Figure 26. The wash water supplied onto the disk 2 breaks into high speed waterdrops W4. The high speed waterdrops W4 spout into the kitchen sink 111 through the openings 112a, 112b of the casing 112. The high speed waterdrops W4 which have spouted into the kitchen sink 111 collide against a dish S
2 held into the kitchen sink 111 by the user and promptly wash the dish S2.
As shown in Figures 26 and 27, when the casing 112 is located at the longitudinal middle of the kitchen sink 111, the control unit opens the valves 114a, 114b and spouts the high speed waterdrops W4 through the openings 112a, 112b so as to wash the dishes S2 which are put in the portions of the kitchen sink on both sides of the casing 112. In this case, two users can carry out washing operations at the same time, so that the efficiency of the washing operation is improved. When the casing 112 is located at a part of the kitchen sink 111 longitudinally offset from its center, the control unit opens one of the valves 114a, 114b and spouts the high speed waterdrops W4 in the direction opposite to the offset direction of the casing. In this case, not only the ordinary dishes but also cooking utensils of ~ ~la~433 various sizes such as large sized dishes, chopping boards, pans and kitchen knives can be washed by putting them into the portion of kitchen sink 111 on the side of the casing 112 with the wider opening.
(3) Third embodiment As shown in Figure 28, a case 120 has a lower case 120a and an upper case 120b which is connected to the top of the lower case 120a to be movable through a hinge 121. A drain board 122 having a mesh structure is disposed at the bottom portion of the lower case 120a.
The drain board 122 is provided with a plurality of guide bars 123 at its outer periphery. The guide bars 123 stand vertically along the side walls of the lower case 120a. The portion of the lower case 120a below the drain board 122 forms a drain pit 124. A garbage filter (not shown) is disposed in the drain pit 124.
A wash water spouting apparatus 1 in accordance with the first embodiment of the wash water spouting apparatus of the present invention is disposed on the drain board 122. A motor 3 of the wash water spouting apparatus 1 is enclosed by a motor cover 125. A
control unit 126 is disposed in the motor cover 125. The wash water spouting apparatus 1 is provided only with a wash water supply nozzle 4 and not with a wash water supply nozzle 5. A wash water discharging port 4a of the wash water supply nozzle 4 is located coaxially with the central axis X1 of the disk 2. The base portion of the wash water supply nozzle 4 extends through and out of the case 120 and is connected to a water supply pipe (not shown) through a valve (not shown).
A dish washer A3 is constituted by the case 120, the drain board 122 and the wash water spouting apparatus 1.
In the dish washer A3, the wash water is supplied onto the 2 1 5 5 ~ 3 3 central portion of the disk 2 through the wash water discharging port 4a of the wash water supply nozzle 4. The wash water supplied onto the disk 2 breaks into high speed waterdrops Ws and spouts radially outwardly from the whole circumference of the outer periphery of the disk 2. The high speed waterdrops W5 collide against and promptly wash dishes S3 put in the case 2 and held by the guide bars 123.
The control unit 126 periodically reverses the rotation of the motor 3 so as to wash the dishes S3 thoroughly.
The waste water is discharged from the case 120 through the drain pit 124. Waste matter is collected by the garbage filter disposed in the drain pit 124.
The upper case 120b is opened and the washed dishes S3 are taken out from the case 120.
(4) Fourth embodiment As shown in Figure 29, a case 130 has a lower case 130a and an upper case 130b which is connected to the top of the lower case 130a to be movable through a hinge 131. The lower case 130a is provided with an opening 132 in the upper part of its side wall. The lower case 130a is provided with a chamber 133 and a drain hole 134 at its lower portion. A garbage filter (not shown) is disposed in the drain hole 134.
A casing 135 is disposed outside of the opening 132. The casing 135 is provided with an opening 135a in its side wall. The casing 135 is fixed to the outside surface of the side wall of the lower casing 130a with the opening 135a aligned with the opening 132.
A wash water spouting apparatus l in accordance with the first embodiment of the wash water spouting apparatus of the present invention is disposed in the casing 135. The wash water spouting apparatus l is inclined. A motor 3 of the wash water spouting 215~433 apparatus 1 is fixed to the outside surface of the bottom wall of the casing 135. The wash water spouting apparatus 1 is provided only with a wash water supply nozzle 4 and not with a wash water supply nozzle 5. The opening 135a is located relative to the wash water supply nozzle 4 so that the wash water supplied onto the disk 2 from the wash water supply nozzle 4 may spout from a portion of the outer periphery of the disk 2 opposed to the opening 135a. The base portion of the wash water supply nozzle 4 extends through and out of the casing 135 and is connected to a water supply pipe (not shown) through a valve (not shown).
A motor 136 is disposed in the chamber 133 which is formed in the lower portion of the lower case 130a. An output shaft 136a of the motor 136 extends through the top wall of the chamber 133 into the lower case 130a. A turntable 137 is fixed to the upper end of the output shaft 136a. The turntable 137 is provided with a plurality of vertically standing guide bars 138. A space between the through hole formed in the top wall of the chamber 133 and the output shaft 136a is sealed by a shaft seal apparatus 139. A control unit 140 is disposed in the chamber 133.
A dish washer A4 is constituted by the case 130, the casing 135, the wash water spouting apparatus 1, the motor 136, the turntable 137, the guide bars 138 and the control unit 140.
In the dish washer A4, the wash water is supplied onto the disk 2 through the wash water discharging port 4a of the wash water supply nozzle 4. The wash water supplied onto the disk 2 spouts radially outwardly at high speed from a region of the outer periphery of the disk 2 opposed to the opening 135a of the casing 135 and passes through the opening 135a of the casing 135 and the opening 132 of the lower case 130a. The wash water breaks into high speed waterdrops 215~4~

W6. The high speed waterdrops W6 fly diagonally and downwardly into the case 130. The high speed waterdrops W6 collide against a dish S4 which is held by the guide bars 138, and promptly wash the dish S4.
The control unit 140 periodically reverses the rotation of the motor 136 so as to reverse the rotation of the turntable 137 in opposite direction. Thus, the dish S4 iS washed thoroughly.
The waste water is discharged from the case 130 through the drain hole 134. Waste matter is collected by the garbage filter disposed in the drain hole 134.
The upper case 130b is opened and the washed dish S4 iS taken out from the case 130.
(5) Fifth embodiment Any one of the wash water spouting apparatuses 1, 10, 20, 30, 40, 50, 60, 70 and 80 may be used in the dish washers Al, Az, A3 and A
4 of the first to the fourth embodiments of the dish washer of the present invention.
[INDUSTRIAL APPLICABILITY]
In the wash water spouting apparatus in accordance with the present invention, the motor only rotates the disk and does not highly pressurize the wash water. Thus, the motor of the wash water spouting apparatus need not be as large as the pump driving motors used in conventional pressure type wash water spouting apparatuses.
Thus, the wash water spouting apparatus in accordance with the present invention is smaller than conventional pressure type wash water spouting apparatuses. A dish washer provided with the wash water spouting apparatus in accordance with the present invention is smaller, lower in production cost and running cost, and less noisy than conventional dish washers provided with pressure type wash water spouting apparatuses.

21~433 In the wash water spouting apparatus in accordance with the present invention, there is no need for disposing a pump and a high pressure spouting nozzle or a reservoir tank between a water supply pipe and the pump. Thus, the structure of the wash water spouting apparatus in accordance with the present invention is simpler than those of conventional pressure type wash water spouting apparatuses.
A dish washer provided with the wash water spouting apparatus in accordance with the present invention is simpler in structure and lower in production cost and running cost than conventional dish washers provided with pressure type wash water spouting apparatuses.

Claims

(1) A wash water spouting apparatus comprising a disk, a driving apparatus for rotating the disk around its central axis and a wash water supplying apparatus for supplying the disk with wash water.
(2) A wash water spouting apparatus comprising a stacked body made of a plurality of disks stacked coaxially with and separated from each other and united as a single body, a driving apparatus for rotating the stacked body around its central axis and a wash water supplying apparatus for supplying the disks of the stacked body with wash water.
(3) A wash water spouting apparatus of claim 1 or 2, wherein a discharging port of the wash water supplying apparatus is opposed to a portion of the disk radially outwardly offset from its central axis.
(4) A wash water spouting apparatus of claim 3, wherein discharging ports of the wash water supplying apparatus are disposed facing opposite surfaces of the disk and opposed to each other.
(5) A wash water spouting apparatus of claim 3 or 4, wherein a discharging port of the wash water supplying apparatus is directed in the rotating direction of the disk and inclined relative to the disk surface.
(6) A wash water spouting apparatus of any one of claims 3 to 5, wherein a discharging port of the wash water supplying apparatus is made oval to have its major axis extend radially.
(7) A wash water spouting apparatus of claim 2, wherein the space between adjacent disks of the stacked body is narrow, and the wash water supplying apparatus has a pipe which communicates with the central portion of the space between adjacent disks at one end and communicates with a wash water tank at the other end.
(8) A wash water spouting apparatus of claim 7, further comprising a guide box for enclosing the stacked body which is provided with an opening opposed to the space between adjacent disks.
(9) A wash water spouting apparatus of claim 7, wherein the outer periphery of the space between adjacent disks is partially closed.
(10) A wash water spouting apparatus of any one of claims 1 to 9, wherein at least one of the outer peripheral edges of the disk or the disks is rounded.
(11) A wash water spouting apparatus comprising a stacked body made of a disk and an annular plate disposed on one of the surfaces of the disk, the disk and the annular plate being substantially equal in outer diameter, stacked coaxially with each other with a narrow space between them and united as a single body, or of a disk and a pair of annular plates disposed on the opposite surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each other with narrow spaces between them and united as a single body, a driving apparatus for rotating the stacked body around its central axis, and a wash water supplying apparatus for supplying the disk of the stacked body with wash water.
(12) A wash water spouting apparatus comprising a plurality of stacked bodies which are disposed coaxially with each other and united as a single body, each stacked body being made of a disk and an annular plate disposed on one of the surfaces of the disk, the disk and the annular plate being substantially equal in outer diameter, stacked coaxially with each other with a narrow space between them and united as a single body, or of a disk and a pair of annular plates disposed on the opposite surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each other with narrow spaces between them and united as a single body, driving apparatus for rotating the stacked bodies around their central axes and wash water supplying apparatus for supplying the disks of the stacked bodies with wash water.
(13) A wash water spouting apparatus of claim 11 or 12, wherein a discharging port of the wash water supplying apparatus is opposed to a portion of the disk radially outwardly offset from its central axis.
(14) A wash water spouting apparatus of claim 13, wherein discharging ports of the wash water supplying apparatus are disposed facing opposite surfaces of the disk and opposed to each other.
(15) A wash water spouting apparatus of claim 13 or 14, wherein a discharging port of the wash water supplying apparatus is directed in the rotating direction of the disk and inclined relative to the disk surface.
(16) A wash water spouting apparatus of any one of claims 13 to 15, wherein a discharging port of the wash water supplying apparatus is made oval to have its major axis extend radially.
(17) A wash water spouting apparatus of any one of claims 11 to 16, wherein at least one of the outer peripheral edges of the disk or the disks, or at least one of the outer peripheral edges of the annular plate or the annular plates is rounded.
(18) A wash water spouting apparatus of any one of claims 11 to 17, wherein a plurality of radially directed blades are disposed in the narrow space between the disk and the annular plate to be circumferentially spaced from each other.
(19) A wash water spouting apparatus comprising a stacked body made of a disk and a plurality of annular plates disposed on one of the surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each other with narrow spaces between them and united as a single body, or of a disk and a pair of groups of annular plates disposed on opposite surfaces of the disk, the disk and the annular plates being substantially equal in outer diameter, stacked coaxially with each other with narrow spaces between them and united as a single body, a driving apparatus for rotating the stacked body around its central axis and a wash water supplying apparatus for supplying the narrow spaces of the stacked body with wash water.
(20) A wash water spouting apparatus of claim 19, wherein a discharging port of the wash water supplying apparatus is disposed radially outwardly offset from the central axis of the stacked body and near the inner periphery of the narrow space.
(21) A wash water spouting apparatus of claim 19 or 20, wherein at least one of the outer peripheral edges of the disk or at least one of the outer peripheral edges of the annular plates is rounded.
(22) A wash water spouting apparatus of any one of claims 19 to 21, wherein a plurality of radially directed blades are disposed in the narrow space between the disk and the annular plate and in the narrow space between the adjacent annular plates to be circumferentially spaced from each other.
(23) A dish washer comprising a washing vessel provided with an opening in its side wall, a wash water spouting apparatus of any one of claims 1 to 22 disposed outside of the opening of the washing vessel, and a casing enclosing the wash water spouting apparatus and the opening.
(24) A dish washer comprising a washing vessel disposed continuously with a kitchen sink and provided with an opening in its side wall, a wash water spouting apparatus of any one of claims 1 to 22 disposed outside of the opening, and a casing enclosing the wash water spouting apparatus and the opening.
(25) A dish washer of claim 23 or 24, wherein the wash water spouting apparatus is inclined so as to spout the wash water diagonally and downwardly toward the bottom of the washing vessel.
(26) A dish washer of any one of claims 23 to 25, further comprising an air blowing apparatus for blowing air to form an air curtain above the wash water spouted in the washing vessel.
(27) A dish washer comprising a casing supported by the upper rim of a kitchen sink to be movable horizontally and provided with an opening in its side wall, and a wash water spouting apparatus of any one of claims 1 to 22 disposed in the casing.
(28) A dish washer comprising a box provided with a movable cover and an inner space for receiving dishes, a wash water spouting apparatus of any one of claims 1 to 22 disposed in the box, and a controlling apparatus for periodically reversing the rotation of the driving apparatus of the wash water spouting apparatus.
(29) A dish washer comprising a box provided with a movable cover, an inner space for receiving dishes and an opening in its side wall, a wash water spouting apparatus of any one of claims 1 to 22 disposed outside of the opening of the box, a casing enclosing the wash water spouting apparatus and the opening, a turntable disposed in the box, and a driving apparatus for periodically reversing the rotation of the turntable.