JPH0299026A - Dish washer - Google Patents

Abstract

PURPOSE:To enable a passage to be switched without a driving source by making use of the difference of rotation between a washing nozzle and a valve body made during the vertical motion of the washing nozzle and switching a washing water channel. CONSTITUTION:A washing nozzle 14, protrusion A23 and a hole part of a valve body 18 are engaged when protrusion B25 of the washing nozzle 14 is not on protrusion C26 of a nozzle bearing 1 7, and rotate jetting washing water from the first washing water passage 21 with an opening part 27 of the valve body 18 coming to a position facing an inlet of the first washing water passage 21 of the washing nozzle 14. When the rotation of the washing nozzle 14 speeds up, and the protrusion B25 gets on the protrusion C26 of the nozzle bearing 17, the washing nozzle 14 rises, and the protrusion A23 gets out of the hole part of the valve body 18, and the washing nozzle 14 alone rotates, and when it slips out of place from the valve body 18 by 90 deg., the next protrusion A23 is engaged with a hole part 24, and the valve body 18 and the washing nozzle 14 rotate together. At this time, water is jetted out of the second washing water passage 22.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is characterized in that a cleaning nozzle is provided with a plurality of cleaning water channels,
The present invention relates to a dishwasher in which washing water is switched to a plurality of channels using a channel switching means.

BACKGROUND OF THE INVENTION Conventionally, this type of dishwasher has been constructed as shown in FIG. That is, a plurality of cleaning water channels 2 and 3 are formed inside the cleaning nozzle 1, and each of the cleaning water channels 2 and 3 is provided with an injection hole 4 having a different injection angle and injection position. By switching, the cleaning water can be sprayed over a wider area and evenly over the entire object to be cleaned even with the same pump capacity, thereby improving the cleaning ability and making it easier to set the object to be cleaned. The flow path switching means proposed here uses a solenoid 5 as a driving source to rotate a flow path switching valve 6 to switch between the first wash water flow path 2 and the second wash water channel 3. 6, a link mechanism 8 for converting the reciprocating motion of the solenoid 5 into rotational motion, and a bearing function for the rotating cleaning nozzle 1, and a double-layered structure forming a part of each cleaning water flow path 2 and 3. A structural pipe member 9 and the like were required.

Problems to be Solved by the Invention The above-mentioned flow path switching means has problems in that each member is complicated and expensive. There has been a desire for a means for switching the water flow path. SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a dishwasher capable of switching flow paths without requiring a driving source.

Means for Solving the Problems In order to achieve the above object, the present invention provides a valve near the rotation center of the cleaning nozzle that switches the cleaning water flow path using the rotational difference between the cleaning nozzle and the cleaning nozzle that occurs when the cleaning nozzle moves up and down. The cleaning water flow path is switched using the rotation of the cleaning nozzle itself as a driving source.

Function With the above configuration, the valve body is joined at the fitting part with the cleaning nozzle and rotates as one, but when the cleaning nozzle is raised,
When the fitting part comes off, a rotation difference is created between the cleaning nozzle and the valve body, and this is used as an opportunity to move the opening of the valve body to the inlet of each cleaning water flow path to switch the flow paths.

Embodiment An embodiment of a dishwasher equipped with a wash water flow path switching means according to the present invention will be described with reference to FIGS. 1 to 5.

First, FIG. 1 shows the schematic structure of a dishwasher. A washing tank 11 is arranged inside the main body 10 of the dishwasher, and the washing water in this washing tank 11 is supplied to a washing pump rotated by a motor 12. It circulates at 13. During cleaning and rinsing, the cleaning water pumped by the cleaning pump 13 is sprayed from the cleaning nozzle 14 provided in the cleaning tank 11.
Tableware 1 arranged neatly in the tableware basket 15 located above
6 to perform cleaning and rinsing.

Next, FIGS. 2 to 5 are perspective views and sectional views showing essential parts of an embodiment of the washing water switching according to the present invention, and in particular, the third
The figure shows the part viewed from below. In the figure, 17 is a nozzle bearing to which the cleaning nozzle 14 is attached, 18 is a valve body that switches the cleaning water flow path, 19 is a holding fitting that suppresses the floating of the valve body 18, and 20 is a nozzle nut that prevents the cleaning nozzle 14 from coming off. FIG. 4 shows a cross section of the assembly assembled in the order shown in FIG. 2. Inside the cleaning nozzle 14, the flow path is divided into two, a first cleaning water flow path 21 and a second cleaning water flow path 22. And the cleaning nozzle 14 and the valve body 1
Projections A23 and holes 24 are provided on the contact surface with the cleaning nozzle 14 and the valve body 18 at 90° intervals so as to fit into the cleaning nozzle 14 and the valve body 18, respectively. Further, 25 and 26 are protrusions B and C, which are provided at two locations every 180 degrees at opposing positions of the cleaning nozzle 14 and the nozzle bearing 17, respectively.
The cleaning nozzle 14 is configured to move up and down when the protrusion C26 rides on it. The valve body 18 is 180 as shown in the figure.
An opening 27 is provided at each angle, and when the cleaning nozzle 14 is fitted, the inlet of the cleaning water flow path 21 or 22 and the opening 27
are arranged so that they are located opposite each other.

To explain the operation here, the protrusion B2 of the cleaning nozzle 14
5 does not ride on the protrusion C26 of the nozzle bearing 17, as shown in FIG.
The protrusion A23 of No. 8 and the hole 24 fit together, and the opening 27 of the valve body 18 comes to a position opposite to the inlet of the first wash water flow path 21 of the cleaning nozzle 14, so that cleaning is carried out from the first wash water flow path 21. Rotates while spraying water. Furthermore, the cleaning nozzle 14
As the rotation progresses and the protrusion B25 of the cleaning nozzle 14 rides on the protrusion C26 of the nozzle bearing 17, the cleaning nozzle 14 rises and the protrusion A23 of the cleaning nozzle 14 comes off the hole 24 of the valve body 18. When only the cleaning nozzle 14 rotates and is out of rotation by 90 degrees with the valve body 18, the next protrusion A
23 and the hole 24 are fitted, and the valve body 18 rotates together with the cleaning nozzle 14. At this time, the opening 27 of the valve body 18 has been switched to a position facing the inlet of the second cleaning water flow path 22 of the cleaning nozzle 14, and the water is injected from the second cleaning water flow path 22.

In this embodiment, the number of cleaning water flow paths is two, and the number of protrusions provided on the cleaning nozzle 14 and the nozzle bearing 17 is two, each 180' apart.

Although the configuration is such that two wash water channels are switched during one rotation of the washing water channel 14, the number of wash water channels and the switching angle can also be changed.

Effects of the Invention As is clear from the embodiments described above, according to the present invention, a plurality of cleaning water flow paths can be continuously switched with a very simple configuration without requiring a new drive source such as a solenoid. A dishwasher can be provided.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a dishwasher according to an embodiment of the present invention;
Figure 2 is a perspective view of the cleaning water flow path switching means, Figure 3 is a perspective view of the cleaning nozzle seen from below, Figure 4 is a sectional view, Figure 5 is a partially cutaway plan view, and Figure 6 is a perspective view of the cleaning water flow path switching means. FIG. 2 is a sectional view showing a conventional cleaning water flow path switching means. 14...Cleaning nozzle, 18...Valve body, 21.22.
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Claims (1)

[Claims] The cleaning nozzle has a plurality of cleaning water flow paths inside and is rotated by the reaction force of jetting the cleaning water, and a valve body disposed near the rotation center of the cleaning nozzle for switching the cleaning water flow path, and the cleaning nozzle rotates. A dishwasher that is configured to move up and down at a certain period, and uses the up and down movement to switch the washing water flow path.