JP2506160Y2 - Washing nozzle for dishwasher - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a washing nozzle for a dishwasher, which sprays washing water into a washing chamber from a plurality of jet ports, and in particular, it is disposed horizontally in the upper portion of the washing chamber. The present invention relates to a washing nozzle for a dishwasher, which is installed and sprays washing water downward.

(Prior Art) Conventionally, the above-mentioned washing nozzle for a dishwasher (hereinafter referred to as a washing nozzle) is formed in a tubular shape and is provided with a plurality of injection parts 1 on its lower side wall, as shown in FIG. The injection part 1 is formed so as to bulge downward in a hemispherical shape and has an injection port 2 at the top (for example, the actual opening).
62-177484). As a result, the direction of flow of the washing water in the washing nozzle is changed from the axial direction of the nozzle to the vertical direction of the coaxial line in the jet unit 1, and the washing water supplied to the nozzle is unevenly distributed from the jet port 2 into the washing chamber. It is jetted without.

(Problems to be solved by the invention) In the above cleaning nozzle, of the cleaning water remaining in the cleaning nozzle after the cleaning process is completed, the cleaning water remaining in the spraying section is quickly sprayed through the hemispherical inner surface. Drop from mouth into washing room. However, since the cleaning water left in the horizontal part in the cleaning nozzle gradually flows into the spraying part, so-called dripping of the cleaning water from the cleaning nozzle continues after the cleaning process, and after this, the rinsing water after rinsing This causes the inconvenience of soiling washed dishes and the like.

The present invention has been made to solve the above-mentioned problem, and an object thereof is to prevent dripping of washing water from the washing nozzle after the washing process.

(Means for Solving the Problems) A structural feature of the present invention is a tubular nozzle horizontally arranged in an upper part of a washing chamber of a dishwasher, and a hemispherical lower wall of the nozzle. Dishwashing in which a plurality of spraying parts each having a spraying shape and having a spraying port at the top are provided, and wash water supplied through a pipe from a pump provided outside the cleaning chamber is sprayed from the spraying port into the cleaning chamber. In the machine cleaning nozzle, an enclosure slightly protruding from the inner surface of the cleaning nozzle is provided around the injection portion.

(Operation) By configuring the present invention as described above, the cleaning water remaining in the cleaning nozzle after the cleaning process of the dishwasher is
It flows into the spraying section in the cleaning nozzle and quickly drops into the cleaning chamber from the spraying port provided on the top of the spraying section along the inner surface of the spraying section. Then, when the water level of the wash water becomes lower than the enclosure, the wash water in the washing nozzle is blocked by the enclosure and does not flow into the injection unit.

(Effect of the Invention) Therefore, the washing water does not drip from the washing nozzle into the washing chamber in a short time after the washing process is finished, and the washed dishes after rinsing are not contaminated by the washing water.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a dishwasher to which the present invention is applied.
This dishwasher has a rectangular parallelepiped box body 10. This box
A partition wall 11 divides 10 into a lower machine room R1 and an upper cleaning room R2. A cleaning tank 12 for storing cleaning water is provided at the rear of the partition wall 11.

A washing pump 21, a rinsing water tank 22, and a rinsing pump 23 are housed in the machine room R1, and the washing pump 21 discharges the washing water stored in the washing tank 12 through a pipe P1. There is. The rinse water tank 22 stores the rinse water, and the rinse pump 23 discharges the rinse water through the pipe P2. An operation switch 24 is attached to the front wall of the box in the front of the machine room R1.

In the cleaning chamber R2, a rack 31 is held by rails (not shown) fixed to the side wall, and the rack 31 is pulled out forward by opening the door 13 provided on the front wall of the box body. The tableware 32 is placed on top and returned to the washing room R1. Further, a cleaning nozzle 33 and a rinsing nozzle 34 according to the present invention are coaxially provided in the upper part of the cleaning chamber R2, and a cleaning nozzle 36 and a rinsing nozzle 37 are coaxially provided in the lower part of the cleaning chamber R2.

As shown in FIG. 2, the cleaning nozzle 33 is composed of a flat pipe in which an elongated upper member 33a and a lower member 33b each having a substantially U-shaped cross section are joined by welding at their end faces. . The cleaning nozzle 33 has a nozzle bearing portion 35 attached to the upper wall through a circular opening 33e provided at the center in the axial direction.
The outer pipe portion 35a is rotatably attached to the outer periphery thereof, and the washing water is supplied from the washing pump 21 through the pipes P1 and P3. As shown in FIG. 2, a plurality of hemispherical injection parts 33c bulging downward are formed on the lower wall of the lower member 33b of the cleaning nozzle, and the injection parts 33c are radially provided on the top part thereof. It is provided with an opened jet port 33d. Further, as shown in detail in FIG. 3, an enclosure 33f which is a main part of the present invention is provided around the injection portion 33c on the inner surface of the lower member 33b. The enclosure 33f includes a jet member 33d formed by welding a ring-shaped member.
And is formed in a shape slightly protruding from the inner surface of the lower member 33b.

The rinse nozzle 34, as shown in FIGS. 1 and 2,
The injection port 34a is formed in an elongated cylindrical shape, and has a plurality of injection ports 34a opened in its lower side wall. This rinse nozzle 34 has a holding portion 35c in which a circular opening 34b provided at the center in the axial direction is connected below the inner pipe portion 35b of the nozzle bearing portion 35.
Is rotatably attached to the rinsing water, and rinsing water is supplied from the rinsing pump 23 through the pipes P2 and P4.

The washing nozzle 36 has the same shape as the washing nozzle 33, is rotatably assembled to the nozzle bearing portion 38 in the opposite direction to the washing nozzle 33, and washing water is supplied through the pipe P1. Also,
The rinse nozzle 37 has the same shape as the rinse nozzle 34, is rotatably assembled to the nozzle bearing portion 38 in the opposite direction to the rinse nozzle 34, and rinse water is supplied through the pipe P2.

In the dishwasher configured as described above, the washing process is started under the control of the control device (not shown) by operating the operation switch 24 after supplying the washing water containing the detergent into the washing tank 12. It The cleaning pump 21 pumps the cleaning water through the pipe P1 to the cleaning nozzle 36, and
The cleaning nozzle 33 is pressure-fed through P3. Each cleaning nozzle 33,36
The washing water supplied to the washing machine is jetted from each jet port into the washing room R2 to wash the dishes 32 placed on the rack 31.

After the washing process is completed, the rinsing process is subsequently started, and the rinsing pump 23 pumps the rinsing water to the rinsing nozzles 34, 37 through the pipes P2, P4. The rinsing water supplied to each rinsing nozzle is sprayed from each spray port toward the inside of the cleaning chamber R2 to rinse the washed dishes and the like.

When the cleaning process is completed, a part of the cleaning water remains in the cleaning nozzle 33, but this residual cleaning water flows into the spraying part 33c and the spraying port 33 provided at the top along the hemispherical surface.
Immediately drops from d to the washing room R2. Then, when the water level of the cleaning water in the cleaning nozzle 33 becomes lower than that of the enclosure 33f, the cleaning water in the cleaning nozzle 33 is blocked by the enclosure 33f and is injected into the injection unit 33c.
It will not flow into the inside. That is, the cleaning water in the cleaning nozzle 33 does not drip into the cleaning chamber R2 within a short time after the completion of the cleaning process. Since the time from the end of this washing process to the point where it does not drip is sufficiently short compared to the time of the rinsing process, the dishes and the like that have been rinsed in the rinsing process should be soiled with the dripping water from the cleaning nozzle 33. There is no.

In the above embodiment, the ring-shaped member is welded to the inner surface of the cleaning nozzle 33 to provide the enclosure 33f around the injection portion 33c, but the lower member 33b is pressed as shown in FIG. As a result, the injection portion 33c that bulges downward in a hemispherical shape and the enclosure 33g that protrudes upward by bending the periphery of the injection portion 33c at an acute angle may be integrally formed. According to the second embodiment, the manufacturing process of the cleaning nozzle can be simplified in addition to the effect of preventing dripping of the cleaning water shown in the above embodiment.

Further, since the tip of the spraying portion 33c hardly projects from the outer surface of the lower member 33b, the vertical thickness of the cleaning nozzle 33 becomes thin, and the vertically occupied portion of the cleaning nozzle 33 in the cleaning chamber R2 is narrowed. The space in the washing room R2 can be used more effectively.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional side view of a dishwasher to which the present invention is applied, FIG. 2 is a partially enlarged sectional view showing an assembled state of a washing nozzle and a rinsing nozzle, and FIG. 3 is an enlarged sectional view of an injection portion of the washing nozzle. FIG. 4 is an enlarged cross-sectional view of the spraying portion of the cleaning nozzle according to the second embodiment, and FIG. 5 is an enlarged cross-sectional view of the spraying portion of the cleaning nozzle according to the conventional example. Explanation of code 21 …… Washing pump, 33 …… Washing nozzle (washing nozzle for dishwasher), 33a …… Upper member, 33b …… Lower member, 33c ……
Injection part, 33d ... Injection port, 33f, 33g ... Enclosure, R2 ... Washing room, P1-P4 ... Pipes.

Claims (1)

(57) [Scope of utility model registration request] 1. A tubular nozzle disposed horizontally in an upper part of a washing chamber of a dishwasher, the lower side wall of which is bulged downward in a hemispherical shape and has an injection port at the top. A washing nozzle for a dishwasher, which includes a plurality of jetting units and jets washing water supplied from a pump provided outside the washing chamber through a pipe into the washing chamber from the jet port,
A washing nozzle for a dishwasher, characterized in that an enclosure slightly protruding from the inner surface is provided around the spraying portion on the inner surface of the same washing nozzle.