JP2585389Y2 - Dishwasher - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher, and more particularly to a structure of a washing nozzle and a rinsing nozzle provided therein.

[0002]

2. Description of the Related Art In a dishwasher, dishes to be washed are generally placed on a rack provided in a washing room, and washing and rinsing are performed by spraying a washing liquid or rinsing water from above and below. is there. For this reason, a washing nozzle and a rinsing nozzle are provided above and below the rack.
No. 43562, No. 2-116265, 3-41
661 and 3-72862. In such a dishwasher, first, washing is performed using a washing nozzle, and then rinsing is performed using a rinsing nozzle.However, it is necessary to apply washing liquid and rinsing water evenly to dishes. For this purpose, it is more effective to move the jetting point of the cleaning liquid or the like over the entire area by rotating around a vertical axis than providing a large number of cleaning nozzles and rinsing nozzles. Therefore, in general, the cleaning nozzle and the rinsing nozzle have a rod-like structure in which the nozzle is rotated with the central portion as a support point (it may be said that the cleaning nozzle and the rinsing nozzle include a center boss and two arms extending therefrom). There is also an example in which an external drive source is used as the rotational driving force (see Japanese Utility Model Application Laid-Open No. 63-48557). However, if the cleaning nozzle and the rinsing nozzle are configured to be rotatable coaxially, the structure is likely to be complicated, and the cleaning liquid It is effective to use the reaction force of the rinsing water as the rotational driving force source (see the above-mentioned Japanese Utility Model Application Laid-Open No. Sho 63-43562 and Japanese Utility Model Application Laid-open No.
-116265, 3-41661, 3-728
No. 62).

In the above-described dishwasher, a washing nozzle and a rinsing nozzle provided above a rack will be described with reference to FIG.
, A rinse nozzle 5 and a washing nozzle 7 are provided coaxially. A plurality of ejection holes (not shown) of the cleaning nozzle 7
Is downward, and the cleaning liquid is sprayed on the lower tableware (not shown). On the other hand, the jet nozzle of the rinse nozzle 5 that rotates around the vertical axis similarly to the cleaning nozzle 7 includes a downward nozzle and an upward nozzle, and the rinse water is ejected as indicated by a broken line. Rinsing water of downward squirting is of course suitable for tableware, but rinsing water of upward squirting is for rinsing the washing nozzle and the ceiling of the washing room which are contaminated with the washing liquid during washing.

[0004]

As described above, the rinsing nozzle at the upper part ejects the rinsing water upward and downward while rotating by the reaction force of the rinsing liquid, but the centrifugal movement accompanying the rotation is performed. Due to the force, the rinsing water tilts outward in the radial direction, and there is a problem that the rinsing liquid does not sufficiently reach the cleaning nozzle just above the center of rotation or the ceiling of the cleaning room. For this reason, there has been a problem that the cleaning liquid containing the detergent drops on the tableware that has been subjected to angle rinsing. Accordingly, an object of the present invention is to provide a dishwasher in which rinsing is completely performed and the remaining washing liquid does not droop.

[0005]

According to the present invention, there is provided, in accordance with the present invention, a washing chamber containing a rack for placing dishes, and an upper washing nozzle provided in the washing chamber above the rack. And an upper rinsing nozzle, and a lower cleaning nozzle and a lower rinsing nozzle provided below the rack in the cleaning chamber, wherein the upper and lower cleaning nozzles and the upper and lower rinsing nozzles respectively include a rotation support portion and the rotation support portion. Dishwasher comprising a plurality of arms extending symmetrically radially outward from the portion and having a plurality of jets of washing liquid or rinsing water disposed along the longitudinal direction, the dishwasher being located below the upper washing nozzle. The ejection holes of the upper rinsing nozzle are oriented so that the rinsing nozzle rotates by the reaction force of the rinsing liquid. And in this top rinse nozzle,
Further, an inward ejection port directed toward the rotation center is provided.

[0006]

In the dishwasher having the above construction, the upper washing nozzle and the lower washing nozzle spout the washing liquid toward the dish on the rack while rotating, and wash the washing liquid. After this washing, the upper rinsing nozzle and the lower rinsing nozzle spout the rinsing water toward the tableware while rotating to rinse off dirt and cleaning liquid attached to the surface of the tableware. Furthermore, the rotating upper rinsing nozzle jets rinse water upward, rinsing off the upper cleaning nozzle and the cleaning liquid attached to the ceiling of the cleaning chamber. Rinsing water is spouted toward the ceiling of the washing room, and the remaining washing liquid and the like in these portions are rinsed off.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same symbols indicate the same or similar parts. FIG. 1 shows the entire structure of a dishwasher 10 according to the present invention. A rack 13 is provided in a washing chamber 11 of the dishwasher 10, and washing racks 15a, 15b, Rinsing nozzles 17a and 17b are provided rotatably. A cleaning liquid tank 19 formed below the cleaning chamber 11 is connected to a cleaning nozzle 15 via a cleaning pump 21 and a cleaning liquid pipe 23.
a, 15b in fluid communication. The cleaning liquid in the cleaning liquid tank 19 is supplied to the cleaning nozzles 15 a and 15 b by the cleaning pump 21 via the cleaning liquid pipe 23, and is jetted toward the tableware A on the rack 13. A rinse water tank 25 is provided alongside the body of the dishwasher 10 and is in fluid communication with the rinse nozzles 17a, 17b via a rinse pump 27 and rinse water piping 29.

FIG. 2 is an enlarged view showing a cleaning nozzle or upper cleaning nozzle 15a above the rack 13 and a rinse nozzle or upper rinse nozzle 17a above the rack 13. In the figure,
Reference numeral 31 denotes a nozzle holder which coaxially supports the upper cleaning nozzle 15a and the upper rinsing nozzle 17a, and connects the cleaning liquid pipe 23 and the rinse water pipe 29 in a manner not shown. Although not shown, generally, the nozzle holder 31
In the center of the rinsing water, a passage for rinsing water is defined and extends to the center of the upper rinsing nozzle 17a. A passage for the cleaning liquid is defined around the rinsing water passage, and communicates with the upper cleaning nozzle 15a.

FIG. 3 is a bottom view of the upper rinsing nozzle 17a. The upper rinsing nozzle 17a has a rotation support portion 17aa at the center and an ejection arm (arm portion) extending symmetrically in the opposite direction.
17ab and 17ac. FIG. 4 is an enlarged view of the tip of the ejection arm 17ac in FIG. On the lower surface of the ejection arm 17ac, a plurality of ejection holes 17ad are provided at positions slightly shifted from the lowest position in the radial direction.
Although not shown in FIG. 3, the jet flow is directed obliquely downward, and a rotational driving force is obtained by the jet reaction force of the rinse water jetted from the jet flow. Although not shown, a plurality of ejection holes obliquely directed upward are formed at symmetric positions on the upper surface of the ejection arm 17ac.

Referring to FIG. 3 and FIG.
Diffusion nozzles 33 are mounted at symmetrical positions of 7ab and 17ac, and the inward jet ports 33a open in the direction of the bearings of the upper cleaning nozzles 15a and the upper rinsing nozzles 17a, that is, the rotation support portions 17aa. I have. After washing is completed in the dishwasher 10 having the above-described configuration, the rinse pump 27 is driven, and the rinse water in the rinse water tank 25 is sent to the rinse nozzles 17a and 17b by the rinse pump 27 via the rinse water pipe 29. When supplied, they spout rinse water in a predetermined direction while rotating.

FIG. 5 schematically shows a state in which the rinse water is jetted from the upper rinse nozzle 17a. From the ejection holes 17ad on the upper and lower surfaces of the ejection arms 17ab and 17ac of the upper rinsing nozzle 17a, the rinsing water is ejected in a direction shown by an arrow W, that is, slightly inclined outward in the radial direction due to centrifugal force and directed upward and downward. Is done. Further, from the inward jet port 33a of the diffusion nozzle 33, the rinse water is diffused and jetted toward the center as indicated by the arrow Z. The diffusion nozzle 33 may be another type of nozzle as long as the ejection port is directed in a predetermined direction.

[0012]

As described above, according to the present invention, in addition to the normal upward and downward directions, the rinsing water is ejected from the inward ejection port upward from the center of rotation in addition to the normal upward and downward directions. As a result, the rinsing hot water is spread evenly, and the tableware and the like can be almost completely washed and rinsed without any remaining rinsing.

[Brief description of the drawings]

FIG. 1 is an overall structural view of a dishwasher according to an embodiment of the present invention.

FIG. 2 is a partially enlarged elevation view of the embodiment of FIG. 1;

FIG. 3 is a bottom view corresponding to FIG. 2 of the embodiment of the present invention;

FIG. 4 is a partially enlarged sectional view of FIG. 3 of the embodiment of the present invention;

FIG. 5 is an operation explanatory view of a main part of the embodiment of the present invention.

FIG. 6 is an explanatory view showing a part of a conventional device.

[Explanation of symbols]

10: dishwasher, 11: washing room, 13: rack, 15
a: Upper cleaning nozzle, 15b: Lower cleaning nozzle, 17a: Upper rinsing nozzle, 17b: Lower rinsing nozzle, 17aa: Rotation support, 17ab, 17ac: Spout arm (arm part), 17ad: Spout hole, 33: Diffusion nozzle , 33a ...
It is a spout.

Claims (1)

(57) [Scope of request for utility model registration] 1. A washing chamber containing a rack for placing tableware therein, an upper washing nozzle and an upper rinsing nozzle provided above the rack in the washing chamber, and a lower nozzle provided below the rack in the washing chamber. A cleaning nozzle and a lower rinsing nozzle, wherein the upper and lower cleaning nozzles and the upper and lower rinsing nozzles respectively have a rotating support portion and a symmetrically extending cleaning fluid or rinsing water jet hole extending symmetrically outward from the rotating support portion. In a dishwasher comprising a plurality of arms arranged along the longitudinal direction, the ejection holes of the upper rinse nozzle located below the upper washing nozzle are rinsed by the reaction force of the rinse water. The nozzle is oriented so as to rotate, and further, an inward ejection port is provided at the tip of the arm portion of the upper rinsing nozzle, which is directed toward the rotation center of the rinsing nozzle. A dishwasher characterized by that: