JPH1057295A - Tableware washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently transmit the turning force of a wash water voltex flow generated in a water introduction pipe to a washing nozzle for improving a washing function by applying the constitution that a turning center member for guiding wash water to a nozzle shaft, while keeping rotation, is fitted to the bottom of the water introduction pipe for connecting the washing nozzle and a circulation pump to each other. SOLUTION: Wash water is first supplied to the base end 14a of a water introduction pipe 14, and then fed from the forward end 14b of the pipe 14 to the nozzle shaft 13 of a washing nozzle, thereby being jetted toward tableware. In this case, the nozzle shaft 13 is integrated with the forward end 14b of the pipe 14, and a channeling plate 142 is provided in the pipe 14 forward of the nozzle shaft 13. Also, a turning center member 144 is laid on the bottom of the pipe 14 immediately below the nozzle shaft 13. As a result, the supplied wash water turns on the forward end 14b of the pipe 14, due to the action of the channeling plate 142, and reaches the nozzle shaft 13 as an eddy current. In this case, the eddy current turns around the turning center member 144 as an axis, and the turning force of the current is transmitted to the rotation of the washing nozzle, thereby increasing injection pressure and improving a washing effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle shaft for supplying washing water to a washing nozzle of a dishwasher.

[0002]

2. Description of the Related Art A conventional dishwasher is disclosed in Japanese Utility Model Publication No. 7-470.
As described in Japanese Patent No. 89, cleaning water was supplied to a cleaning nozzle A disposed in a cleaning tank through a flat water guide pipe B by a circulation pump C. The washing nozzle A injects washing water to dishes while rotating by the ejection pressure of washing water supplied by the circulation pump C.
At this time, in order to enhance the cleaning effect, the outlet B
A guide plate B2 is provided in the vicinity of 1 to generate a vortex in the water pipe to reduce pressure loss due to flow path resistance and increase the injection pressure from the cleaning nozzle A.

[0003]

However, on the other hand, the vortex generated inside the water pipe B is attenuated by the pressure of the washing water flowing through the water pipe B, and the effect of the swirling of the vortex is sufficiently obtained. There was a problem that it could not be obtained. In view of the above, it is an object of the present invention to sufficiently transmit the swirling force of a vortex of cleaning water generated inside a water guide pipe to a cleaning nozzle.

[0004]

According to the first aspect of the present invention, there is provided a cleaning tank, a cleaning nozzle for injecting cleaning water in the cleaning tank, a circulation pump for pumping the cleaning water to the cleaning nozzle, a cleaning nozzle and a circulation pump. In a dishwasher in which a rectifying member that gives a swirling force to the cleaning water as a swirl is formed on a side wall of the water guiding pipe, and a nozzle shaft that is provided in the water guiding pipe to support the washing nozzle, A swirl core member is provided on the bottom surface of the water guide pipe to guide the washing water toward the nozzle axis while keeping the swirl.

According to a second aspect of the present invention, in the first aspect,
The swivel core member is detachably mounted from the bottom side of the water pipe.

According to the third aspect of the present invention, there is provided a washing tank, a washing nozzle for spraying washing water in the washing tank, a circulation pump for pumping the washing water to the washing nozzle, and a water pipe connecting the washing nozzle and the circulation pump. In a dishwasher having a nozzle shaft provided on a water guide pipe to support a washing nozzle and a straightening member projecting on a side wall of the water guide pipe to impart a swirling force to the washing water as a vortex, an upper portion of the nozzle shaft, A cap is integrally provided with a swivel core member for guiding the washing water toward the nozzle shaft while keeping the swirl.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> An embodiment of the present invention will be described with reference to the drawings. With reference to FIGS. 1 to 5, the dishwasher 1 includes an exterior 2.
The washing tank 3 is incorporated in the inside of the container, and two doors 4 are provided on the front surface. The upper and lower tableware baskets 5 are installed in the washing tank so that they can be freely inserted and removed. A long cleaning nozzle 6 that rotates around the long direction is disposed, and two planar rotary cleaning nozzles 7 are disposed below the tableware basket 5 on the left and right. (Hereinafter, "planar rotary cleaning nozzle"
Is simply referred to as “lower washing nozzle”. Below the washing tank 3, a circulation pump 8 for circulating the washing water to the washing nozzles 6, 7 and a drainage pump 9 for discharging the washing water after washing out of the machine are arranged. A water outlet 10 for supplying hot and cold water to the cleaning tank 3 and a nozzle shaft 11 for supplying cleaning water to the long cleaning nozzle 6 are provided at an upper portion of a rear wall of the cleaning tank 3. The long cleaning nozzle 6 is supported at its center by a nozzle shaft 11, and at both ends by bearings 12 projecting from the left and right side walls of the cleaning tank 3, and rotates by the reaction force of the cleaning water jet. The bearing 12 on the right side has one end mechanically connected to the long cleaning nozzle 6 and the other end connected to a shaft (not shown) of a motor that rotates at a speed lower than the rotation speed of the long cleaning nozzle 6. Thus, the rotation of the long cleaning nozzle 6 is maintained at a low speed. A nozzle shaft 13 to which the lower cleaning nozzle 7 is attached is provided below the cleaning tank 3.

The water conduit installed outside the cleaning tank 3 is composed of a V-shaped water conduit 14 below the cleaning tank 3 and a vertical water conduit 15 behind the cleaning tank 3, and the cleaning water is V-shaped. Type water pipe 14
After being supplied to the base lower end 14a of the
Is supplied to the nozzle shaft 13 of the lower washing nozzle 7 by the circulating pump 8, and the nozzle of the long washing nozzle 6 via the vertical water pipe 15 erected upward from the base upper end 14 c of the V-shaped water pipe 14. It is supplied to the shaft 11, reaches the upper and lower washing nozzles 6, 7, and is sprayed toward tableware.

As shown in FIGS. 6 and 7, a V-shaped conduit 1 is provided.
Numeral 4 has a thin flat shape up and down, and a cylindrical nozzle shaft 13 protruding upward is integrally formed at a tip 15b thereof. Inside the V-shaped conduit 14, the nozzle shaft 13
On the front side, a substantially triangular drift plate 142 for narrowing the flow path is provided on one side wall 141, and a conical shape projecting upward is provided on the bottom surface 143 of the V-shaped water pipe 14 immediately below the nozzle shaft 13. The pivot member 144 is formed. In addition,
The axis of the revolving core member 144 and the axis of the nozzle shaft 13 are matched. A water supply port 13 is provided around the nozzle shaft 13.
a is provided, and the washing water is supplied to the lower washing nozzle 7 through the water supply port 13a. Further, a portion above the water supply port 13a is a ring fitting portion 13b.

The lower cleaning nozzle 7 is held by inserting a central hole 71a of a hollow cylindrical nozzle body 71 into the nozzle shaft 13 and has a plurality of injection ports 72 on the upper surface thereof.
The injection port 72 is inclined in the left-right direction with respect to the longitudinal direction of the lower cleaning nozzle 7 so that the lower cleaning nozzle 7 rotates by the reaction force of the cleaning water from there, that is, is directed to the opposite side to the rotation direction. It is open. The nozzle body 71 is integrated by welding two members, upper and lower, with a seal ring 16 described later incorporated therein. The edge of the lower hole 71a of the lower cleaning nozzle 7 is an annular projection 71b projecting downward. A rib 71c is provided inside the nozzle body 71 so that the seal ring 16 can be loosely fitted inside the nozzle body 71 so as not to move in the lateral direction.
Seal ring 1 incorporated inside nozzle body 71
6, the inner circumference of a polyacetal ring 161 is tightly fitted to the ring fitting portion 13 b of the nozzle shaft 13 to form a fitting sealing surface, and the upper surface of the rising protrusion 162 is formed on the upper wall 71 d of the lower cleaning nozzle 7. The sliding seal surface is formed by contacting the lower surface.

Next, a method of mounting the lower cleaning nozzle 7 on the nozzle shaft 13 will be described. First, the washer 1 is attached to the nozzle shaft 13.
7 and the lower washing nozzle 7 is connected to the nozzle shaft 13 from above.
Insert At this time, the lower cleaning nozzle 7 is
b is pushed until it comes into close contact with the upper surface of the washer 17. At this time, the seal ring 16 loosely fitted therein is pushed into the lower surface of the upper wall of the lower cleaning nozzle 7 so as to be fitted into the ring fitting portion 13 b of the nozzle shaft 13. It is tightly fitted. And finally, the cap 1 which is the stopper for the lower cleaning nozzle 7
8 is screwed from above the nozzle shaft 13 to complete the mounting of the lower cleaning nozzle 7.

The washing water is swirled at the tip 14b of the V-shaped water pipe 14 by the action of the drift plate 142 of the nozzle shaft 13.
The vortex reaches the nozzle shaft 13 and is supplied to the lower cleaning nozzle 7. At this time, since the vortex swirls around the swirl core member 144 as an axis, the swirl does not attenuate due to the pressure of the washing water sent from the base lower end 14a of the V-shaped water pipe 14, and the swirling force of the swirl is reduced by the lower washing nozzle. The rotation is sufficiently transmitted to the rotation of No. 7, thereby increasing the injection pressure and improving the cleaning effect.
Needless to say, the drift plate 142 is provided on the side where the rotating direction of the cleaning water is the same as the rotating direction of the lower cleaning nozzle 7.

As described above, in the present embodiment, the pivot member 144 is provided on the bottom surface 143 of the V-shaped conduit 14.
As a result, the swirling of the washing water is protected from the pressure of the washing water flowing through the water pipe. for that reason,
The swirling of the swirl is not attenuated, and the swirling of the swirl is sufficiently transmitted to the jetting force of the cleaning nozzle, thereby improving the washing power.

As a modification of this embodiment, a pivot member can be detachably mounted from below the bottom surface of the V-shaped conduit. As shown in FIG. 8, the pivot core member 19 has a flange 191 formed at the lower end thereof, and a male screw 192 formed above the flange 191. On the other hand, a hole 145 is formed in the bottom surface 143 of the V-shaped water pipe 14, and a female screw 145a is formed around the hole 145, and the sealing member 2 is interposed therebetween.
0 and the pivoting core member 19 is inserted into the hole 14 of the V-shaped conduit 14.
Screw into 5. In this case, even if a large residual can be clogged in the gap between the pivoting core member 19 and the nozzle shaft 13, the residual can be easily removed by removing the pivoting core member 19, so that maintenance can be performed. Easier to do.
Also, by changing the height or depth of the swivel core member 19 or replacing the swivel core member with another shape, the flow path area between the nozzle shaft and the swivel core member is changed to reduce the rotation speed of the lower cleaning nozzle. Adjustment is possible, and efficient washing according to the number of dishes and the shape of the dishes becomes possible.

<Second Embodiment> Next, a modification of the present invention will be described with reference to the drawings. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

In this embodiment, a revolving core member 182 is formed integrally with a lower portion of the cap 18 which is a stopper for the lower cleaning nozzle 7. That is, as shown in FIG. 9, a cylindrical mounting screw portion 18 formed on the lower surface of the cap 18 is provided.
1 was extended to reach the vicinity of the bottom surface 143 of the V-shaped water pipe 14, thereby forming a revolving core member 182.
In this example, the detergency is improved as in the previous embodiment. Further, since the pivot member 182 can be removed from the nozzle shaft 13, the pivot member 182 and the nozzle shaft 13 can be removed.
Even if a large garbage may be clogged in the gap between them, the garbage can be easily removed by removing the cap 18, thereby facilitating maintenance. Further, by changing the height or depth of the swivel core member 182 or replacing the swivel core member with a different shape, the flow path area between the nozzle shaft and the swivel core member is changed to reduce the rotation speed of the lower cleaning nozzle. Adjustment is possible, and efficient washing according to the number of dishes and the shape of the dishes becomes possible.

[0017]

According to the present invention, since the swirling core member protects the swirling of the washing water, the swirling of the swirling flow is not attenuated, and the swirling of the swirling flow is sufficiently transmitted to the jetting force of the cleaning nozzle. Detergency is improved.

Further, if the revolving core member is made detachable, it is easy to remove clogs such as residual vegetables, so that the maintenance is excellent. Further, by changing the height or depth of the removed pivot member, or by replacing the pivot member with another shape, by changing the flow path area between the nozzle shaft and the pivot member,
The number of rotations of the lower washing nozzle can be adjusted, and efficient washing can be performed according to the number of dishes and the shape of the dishes.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dishwasher according to the present invention.

FIG. 2 is a perspective view showing a state where a door of the dishwasher of FIG. 1 is opened.

FIG. 3 is a perspective view showing a state where a tableware basket is removed from FIG. 2;

FIG. 4 is a schematic front view showing a pipe state of the dishwasher with a door removed.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a sectional view schematically showing a nozzle shaft of a lower cleaning nozzle according to the first embodiment.

FIG. 7 is an explanatory view of a V-shaped water pipe according to the embodiment;
(A) is a plan view, (b) is a front view, (c) is Y in (a).
It is -Y sectional drawing.

FIG. 8 is a cross-sectional view schematically illustrating a nozzle shaft of a lower cleaning nozzle according to a modification of the first embodiment.

FIG. 9 is a cross-sectional view schematically illustrating a nozzle shaft of a lower cleaning nozzle according to a second embodiment.

10A and 10B are diagrams illustrating a conventional dishwasher, wherein FIG. 10A is a longitudinal sectional view of the dishwasher, FIG. 10B is a plan view of a water guide tube, and FIG. 10C is a cross-sectional view of the water guide tube. is there.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Dishwasher 3 ... Cleaning tank 7 ... Cleaning nozzle 8 ... Circulation pump 13 ... Nozzle shaft 14 ... Water pipe (V-shaped water pipe) 141 ... Side wall 142 ... Rectifying member 143 ... Bottom surface 144 ... Revolving core member 18 ... Cap 19 ... Revolving core member 181 ... Revolving core member

Claims (3)

[Claims] A washing tank, a washing nozzle for spraying washing water in the washing tank, a circulation pump for pumping the washing water to the washing nozzle, a water pipe connecting the washing nozzle and the circulation pump,
In a dishwasher in which a nozzle shaft provided on the water guide pipe to support a washing nozzle, and a straightening member that protrudes a side wall of the water guide pipe to impart a swirling force to the cleaning water as a vortex,
A dishwasher, wherein a swirling core member is provided on a bottom surface of the water pipe so as to guide the washing water toward the nozzle axis while maintaining the swirling. 2. The dishwasher according to claim 1, wherein a pivot member is detachably mounted from a bottom side of the water pipe. 3. A washing tank, a washing nozzle for spraying washing water in the washing tank, a circulation pump for pumping the washing water to the washing nozzle, a water pipe connecting the washing nozzle and the circulation pump,
In a dishwasher in which a nozzle shaft provided on the water guide pipe to support a washing nozzle, and a straightening member that protrudes a side wall of the water guide pipe to impart a swirling force to the cleaning water as a vortex,
A dishwasher, wherein a cap integrally formed with a revolving core member for guiding the washing water toward the nozzle shaft while keeping the revolving motion is provided above the nozzle shaft.