JPH0346710Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to the nozzle body structure of a dishwasher.
In particular, the present invention relates to a novel improvement for ensuring that the injection liquid injected into the cleaning chamber is supplied substantially uniformly regardless of the location.

b. Prior Art Various configurations have been proposed and adopted for the nozzle body structure of this type of dishwasher that has been used in the past, and representative configurations are shown in Figs. Actual public service shown in Figure 7
Examples include the configurations of Publication No. 24049 and Publication of Utility Model Publication No. 54-27825.

First, in the case of the configuration shown in FIG. 6, which is disclosed in the above-mentioned publications, the surface portion 3 of the front member 2 having the shaft hole 1 is
A plurality of protrusions 4 are formed on each of the protrusions 4, and each of these protrusions 4 has a hemispherical shape, and one slit-shaped injection port 5 is formed in each of the protrusions 4.

On the back surface of the front member 2, a back member 6 having the same external shape as the front member 2 and having no projections 4 and injection ports 5 is integrally joined and provided.

Although the configuration shown in FIG. 7 is not specifically disclosed in the literature, it is a structure that has been widely used in the past, and has three injection ports 5 formed in the protrusion 4, and the other parts are Since the configuration is the same as that in Figure 6,
The same reference numerals are used, and the description thereof will be omitted to avoid duplication.

The nozzle body structure of a conventional dishwasher is configured as described above, and its operation will be described below.

6 and 7, the injection port 5 formed in each protrusion 4 is common to both cases.
Since all the opening areas are the same (in the case of FIG. 7, the total opening area of the three injection ports 5 in each projection 4 is the same), the cleaning water flows through the outer pipe (not shown). When supplied into the cleaning nozzle body 7, the same amount of cleaning water is sprayed upward from each injection port 5.

c Problems to be solved by the invention Since the nozzle body structure of the conventional dishwasher was constructed as described above, the injection port 5 of each protrusion 4
Since the amount of liquid injected from the outer end 2a of the front member 2 is the same, when the cleaning nozzle body 7 rotates, the outer end 2a of the front member 2
The area for cleaning by a single injection port 5 becomes larger as the area increases, and substantially the area around the rack (not shown) on which tableware is placed is larger than the area at the center of the rack. As a result, the amount of liquid supplied per unit area becomes extremely small, and the cleaning ability around the rack is greatly reduced.

Therefore, if the cleaning process is performed under the above conditions,
Although the dishes in the center of the rack were thoroughly washed, the dishes around the periphery of the rack were not sufficiently washed, resulting in uneven cleaning.

In addition, in the above-mentioned condition, in order to increase the cleaning power, if the rotation speed of the cleaning nozzle body 7 is increased, it is theoretically possible to increase the amount of cleaning liquid supplied to the surrounding area of the rack to the required level. It is possible, but
In that case, the life of the shaft hole 1 will be shortened and the cleaning nozzle body 7 will be damaged. Furthermore, in order to increase the rotational speed of the cleaning nozzle body 7, the pump must be made larger, resulting in a significant increase in cost and wasting power and water, which is contrary to energy conservation.

Furthermore, the shapes of all injection ports are all the same,
Since the holes are small, dirt and foreign matter mixed in the washing water may block the injection port 5, resulting in a decrease in washing ability and an unsanitary condition.

The object of the present invention is to provide a nozzle body structure for a dishwasher that quickly solves the various problems described above and can uniformly supply cleaning liquid to all the dishes on the rack. With the goal.

d Means for Solving the Problems The nozzle body structure of the dishwasher according to the present invention is provided rotatably around a shaft hole, and in the nozzle body having a jet port, the opening area of the jet port is larger than the shaft hole. This configuration is such that the injection ports on the outer end side of the front member are larger than the injection ports closer to the holes.

e Effect In the nozzle body structure of the dishwasher according to the present invention, the opening area of the injection port formed in each protrusion is formed to be different on the shaft hole side and the outer end side,
Since the outer end is larger, a larger amount of cleaning liquid is supplied to the periphery of the rack than to the center.
The amount of liquid sprayed per unit area is approximately uniform over the entire rack, and all dishes on the rack are uniformly washed.

f. Embodiments Hereinafter, preferred embodiments of the structure of a nozzle body for a dishwasher according to the present invention will be described in detail with reference to the drawings.

Note that the same reference numerals are used to describe the same or equivalent parts as in the conventional example.

Figures 1 to 5 are for showing the structure of the nozzle body of the dishwasher according to the present invention, and the reference numeral 1 in the figures is a shaft hole formed at the center of rotation of the front member 2. Yes, the surface part 3 of this front member 2
A plurality of hemispherical projections 4 are formed on the
Each of these projections 4 has a slit-shaped injection port 5.
A to 5d are formed one by one. On the back surface of this front member 2, a back member 6 having the same external shape as this front member 2 and having no projections 4 and injection ports 5 is integrally joined, and the front member 2 and the back member 6
The cleaning nozzle 7 is configured by the above.

The injection ports 5 are the most important component in this invention, and are configured so that their opening areas are different from each other.

That is, as shown enlarged in FIGS. 2 and 3, the injection port 5a of the protrusion 4 closest to the shaft hole 1 is configured to be the smallest as shown in FIG. The area is (A×B), and the injection port 5d of the protrusion 4 closest to the outer end 2a of the front member 2
As shown in FIG. 3, the opening area is the largest, and the opening area is (E×F). Further, among the respective projections 4 described above, the opening area of the injection port 5c of the projection 4 located in the middle portion is an intermediate size between the aforementioned opening areas (A×B) and (E×F). It is configured as (C×D).

Therefore, the permutation of each opening area of each injection port 5a, 5c, and 5d described above is (A×B)<(C×D)
<(E×F), and the outer end 2a of the front member 2
The opening area of the injection port 5d located at is the largest.

The configuration shown in FIG. 5 shows a configuration in which a cleaning nozzle body 7 to which the nozzle body structure according to the present invention is applied is attached to the upper nozzle body of a cleaning machine (not shown). is cleaning pipe 9
It is composed of an outer pipe 10 connected to the rinsing pipe 11 and an inner pipe 12 connected to the rinse pipe 11, and a holder 14 having a first flange 13 is screwed and attached to the tip of the inner pipe 12. ing. A passage 15 formed at the center of the holder 14 communicates with the inner tube 12, and a stopper 16 is screwed into the end of the holder 14.

A second flange 17 is integrally formed on the outer circumference of the outer tube 10, and the first flange 13 and the second flange 1
The shaft hole 1 of the cleaning nozzle body 7 is rotatably fitted between the cleaning nozzle body 7 and the cleaning nozzle body 7.

Furthermore, the bearing body 18 rotatably held at the outer peripheral position of the holding body 14 has a plurality of injection ports 19.
A rinsing nozzle body 20 having a rinsing nozzle body 20 is attached thereto.

The nozzle structure of the dishwasher according to the present invention is constructed as described above, and its operation will be described below.

In the cleaning process, the cleaning water supplied to the outer tube 10 is supplied from the opening 10a to the cleaning nozzle body 7 through the path indicated by the arrow G, and is applied to the dishes on the rack (not shown) from each of the injection ports 5a to 5d. supplied and cleaned.

As mentioned above, when cleaning water is supplied from each of the injection ports 5a to 5d, FIG. 4 shows the cleaning range per unit angle of each of the injection ports 5a to 5d.

According to FIG. 4, the cleaning range H per unit angle of the injection port 5d closest to the outer end 2a is the widest, and the cleaning range J per unit angle of the injection port 5a closest to the shaft hole 1 is the narrowest. It is also clear that the cleaning range I of the injection port 5c is located between these.

Therefore, since the amount of injection from the injection port 5a is the smallest and the amount of injection from the injection port 5d is the largest, the injection flow rate per unit area is all uniform, making it possible to perform cleaning with extremely high efficiency. This makes it possible to uniformly wash all the dishes on the rack.

In the above-mentioned state, the cleaning water is being circulated and supplied, but since the opening area of the injection port on the outer end 2a side is made large, it is possible to prevent the cleaning water from being clogged with foreign matter, dirt, etc. Note that the shape of the injection port in this embodiment is merely an example, and the shape is not limited to a slit-like rectangle, and the same effect can be obtained even when the shape is other than the slit-like shape.

Further, in this embodiment, the cleaning nozzle body has been described, but the same effect can be obtained also in the rinsing nozzle body.

g. Effects of the invention Since the nozzle body structure of the dishwasher according to the invention has the above-described configuration and function, it can obtain various effects as described below.

(1) Since the opening area of the injection port increases toward the outer end of the nozzle body, the flow rate per unit area on the cleaning surface is uniform, resulting in extremely efficient cleaning. It can be carried out.

(2) Since the opening area of the injection port on the outer end side of the nozzle body is large, it is possible to prevent clogging due to dirt, foreign matter, etc. contained in the cleaning water, and to eliminate a decrease in cleaning performance. Daily cleaning of the injection port can also be omitted.

[Brief explanation of the drawing]

Figures 1 to 5 are for showing the structure of the nozzle body of the dishwasher according to the present invention. Figure 1 is a perspective view, and Figure 2 is an enlarged view of the part marked with a circle K in Figure 1. Figure 3 is an enlarged view of the circle L in Figure 1, Figure 4 is an explanatory diagram showing the spray distribution inside the washer, and Figure 5 is the cleaning nozzle body installed. 6 and 7 are perspective views showing the conventional nozzle body. 1 is a shaft hole, 2 is a front member, 2a is an outer end, 4 is a protrusion, 5a to 5d are injection ports, 6 is a back member, and 7 is a cleaning nozzle body.

Claims (1)

[Claims for Utility Model Registration] (1) In a nozzle body 7 that is rotatably provided around the shaft hole 1 and has injection ports 5a to 5b,
The tableware is characterized in that the opening area of the injection ports 5a to 5d is such that the injection port 5d closer to the outer end 2a of the front member 2 has a larger opening area than the injection port 5a closer to the shaft hole 1. Cleaning machine nozzle structure. (2) The nozzle body structure for a dishwasher according to claim 1, wherein the injection ports 5a to 5d are rectangular.