JPH0237223B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is installed in a washing chamber, a drying chamber, etc. of a washing machine, and sprays a fluid toward an object to be cleaned, thereby cleaning or drying the object. This invention relates to a slit nozzle device that performs.

(Prior Art) Conventionally, devices shown in FIGS. 3 and 4 have been known as devices for cleaning objects having perforated holes, such as cylinder blocks in automobile engines. There is. In the figure, a nozzle chamber 1 includes a chamber body 3 having a fluid supply port 2, and a large number of straight nozzles 4.
The nozzle plate 5 has a box-like structure. Some of the many straight nozzles 4 are used to clean the perforations 6a formed in the object 6 to be cleaned, and the remaining straight nozzles 4 are used to clean the outer surface of the object 6. The fluid supply port 2 is connected and communicated with a fluid supply source (not shown) via a fluid supply pipe 7.

When cleaning the object 6 to be cleaned, the nozzle chamber 1 is fixedly disposed in the cleaning chamber, and a large number of straight nozzles 4 are attached to the nozzle chamber 1 facing the perforation 6a and the outer surface of the object 6 to be cleaned.
Next, after the object 6 to be cleaned that has been transported to the cleaning chamber is positioned with high precision, fluid (cleaning liquid) is ejected from the straight nozzle 4 to clean the object 6 to be cleaned.

However, in the above conventional technology, since a large number of straight nozzles 4 are installed upright on the nozzle plate 5 of the nozzle chamber 1, the structure is not only complicated and the manufacturing cost is high, but also the straight nozzles 4 eject water. When the fluid reaches the perforation 6a, it spreads in a cascading manner and hits the perforation 6a and its surrounding area.As a result, there is a problem in that the fluid accumulates in the perforation 6a and the perforation 6a is not sufficiently cleaned.

Therefore, a slit nozzle device 8 which solves these problems and improves the cleaning effect has been devised and an application has been filed. As shown in FIGS. 5 and 6, this device 8 includes a base 10 having a fluid supply port 9;
A pair of nozzle plates 11a and 11b are vertically opposed to each other, and a fluid supply source (not shown) is connected to a fluid supply pipe 12 provided on a base 10.

The nozzle plates 11a, 11b are arranged so that the inner surfaces of the nozzle plates 11a, 11b face the fluid supply port 9 at an angle. and,
The distance between the inner surfaces of the nozzle plates 11a and 11b is set to become smaller as the distance from the fluid supply port 9 increases.
A fluid outflow path 1 having a substantially wedge-shaped cross section is provided between 1a and 11b.
3 is formed. And this fluid outflow path 13
The shape of the jet nozzle 14 is formed into a slit shape.

Slit nozzle device 8 configured as above
is installed in the cleaning chamber so as to be movable up and down (in the direction AA' in FIG. 5), and then the object to be cleaned 6 is positioned at the cleaning position and fluid is supplied to the fluid supply pipe 12.
The fluid is constricted by a substantially wedge-shaped fluid outflow path 13 and is ejected from a slit-shaped ejection path 14 in a plate shape. The object 6 to be cleaned is cleaned by moving the slit nozzle device 8 up and down while ejecting the fluid in this manner.

(Problems to be Solved by the Invention) However, although the conventional slit nozzle device described above is effective for cleaning the outer surface of objects to be cleaned such as cylinder blocks, This method has a problem in that it is not effective for cleaning the inside of holes formed in objects.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a slit nozzle device that is effective for cleaning a narrow part inside a hole of an object to be cleaned, such as the bore of a cylinder block. do.

(Means for Solving the Problems) The present invention provides a fluid supply pipe 16 whose lower end is closed.
A slit nozzle 1 is constructed of a pair of annular nozzle plates 20 and 21 coaxially near the lower end of the slit nozzle 1.
A wedge-shaped ejection port 22 whose cross-sectional shape decreases outward is formed on the inner surface of the slit nozzle 18, and the ejection side end of the ejection port 22 has a direction in which the fluid is ejected. This configuration has jet guide parallel surfaces 23 and 24 that are parallel to each other.

(Function) Since the present invention is constructed as described above, when cleaning a narrow inner surface of a hole such as the bore of a cylinder block, the slit nozzle device is placed inside the bore and the nozzle is ejected from the spout. Just eject the fluid. The fluid is ejected radially and can clean the entire interior of the bore and the like. Also, depending on the internal shape of the object 6 such as a bore, installing a slit nozzle 18 with different lengths of the ejection guide parallel surfaces 23 and 24 of the fluid ejection port 22 changes the fluid ejection condition and cleans the object. A fluid suitable for the cleaning method can be ejected onto the cleaning object 6.

(Example) Next, an example of the present invention will be described based on the drawings. 15 is a slit nozzle device, and 16 is a fluid supply pipe whose lower end is closed, which is a part of the slit nozzle device. A fluid passage 17 is bored in this fluid supply pipe 16 . Further, two annular slit nozzles 18, 1 are provided near the lower end of the fluid supply pipe 16.
9 are attached coaxially by welding or the like. Since the slit nozzles 18 and 19 have substantially the same configuration, the upper slit nozzle 18 in FIGS. 1 and 2 will be described. Note that the lower slit nozzle 19 is similar to the upper slit nozzle 1.
The same parts as in 8 are given the same reference numerals and the description is omitted.

The slit nozzle 18 is composed of a pair of annular nozzle plates 20 and 21 that are arranged to face each other. The pair of nozzle plates 20 and 21 are mounted on the fluid supply pipe 16 so as to be parallel to each other and facing each other. The inner surfaces of the pair of nozzle plates 20 and 21 have a distance between the inner surfaces of the fluid supply pipe 1.
The inclined surface is formed so that it becomes smaller in the radial direction of 6 in a wedge shape. That is, the jet nozzle 22 is formed so as to have a wedge-shaped cross-sectional shape that decreases outward.

Further, on the inner surfaces of the pair of nozzle plates 20 and 21, on the ejection side ends of the ejection ports 22, ejection guide parallel surfaces 23 and 24 are formed, which are parallel to the ejection direction of the fluid. The fluid is ejected straight by the parallel jet guide surfaces 23 and 24, and the parallel surfaces 23 and 24
If you make it short, the fluid will spread and eject.

The angle of the inner inclined surface of the nozzle plate 20 with respect to the outer surface of the nozzle plate 20 and the angle of the inner inclined surface of the nozzle plate 21 with respect to the outer surface of the nozzle plate 21 correspond to the curved shape of the cleaning surface of the object 6 to be cleaned. They are placed at different angles.

Next, a case will be described in which the slit nozzle device 1 constructed as described above is used to clean the object 6 to be cleaned, for example, the inside 6b of a hole such as a bore of a cylinder block. First, the slit nozzle device 15 is installed in the cleaning chamber of a washing machine (not shown) so as to be able to reciprocate in the vertical direction (AA' direction in FIG. 1) as shown in FIG. It is positioned and fixed at a predetermined position suitable for the device 15. In this case, high accuracy in positioning the object 6 to be cleaned with respect to the slit nozzle device 15 is not required.

Next, when a fluid supply source (not shown) is opened, fluid (cleaning liquid) is supplied to the fluid supply pipe 16.
The fluid then flows through the outflow path 17 of the fluid supply pipe 16.
Through the annular slit nozzle 18 the jet 22
The fluid is ejected radially from the central axis of the fluid supply pipe 16 . The inside 6b of the hole of the object 6 to be cleaned can be cleaned by this jetted fluid. Further, depending on the internal shape of the object to be cleaned 6 such as a bore, the jet guide parallel surfaces 23 and 2 of the fluid jet port 22 may be
By appropriately using the slit nozzles 18 having different lengths, it is possible to change the jetting state of the fluid, and it is rational to jet the fluid according to the method of cleaning the object 6 to be cleaned. Therefore, it is suitable for use when cleaning the inside 6b of the object 6 to be cleaned, such as the bore of a cylinder block.

Note that in this embodiment, a pair of nozzle plates 20, 21
That is, although the slit nozzles 18 and 19 are shown in two locations on the fluid supply pipe 16,
The slit nozzles 18 and 19 are connected to the fluid supply pipe 16
They can be arranged in an appropriate number at any position in the axial direction.

Further, in this embodiment, the object to be cleaned 6 is fixed and the slit nozzle device 15 is moved up and down in FIG. may be moved up and down. Furthermore, in order to improve the efficiency of cleaning work, both the object to be cleaned 6 and the slit nozzle device 15 may be configured to be movable in the vertical direction. In this case, the object to be cleaned 6 may move forward or double. At this time, the slit nozzle device 15 double-acts or forward-moves in the direction opposite to the object 6 to be cleaned. Note that if this slit nozzle device 15 is installed in a drying chamber and fluid (high pressure air) is ejected to the object 6 to be cleaned, the inside 6b of the object 6 to be cleaned can be dried.

(Effects of the Invention) The present invention, configured as described above, has the following effects.

To provide a slit nozzle device having a plurality of jet ports extremely easily by simply additionally attaching only a slit nozzle constituted by a pair of nozzle plates to an appropriate position of the fluid supply pipe when a plurality of jet ports are provided in a fluid supply pipe. Can be done.

Further, even if the number of ejection ports is increased in this way, the structure of the slit nozzle device is simple, so maintenance is easy and manufacturing costs can be kept low.

Furthermore, by forming a jet guide parallel surface parallel to the fluid jetting direction at the jetting side end of the jetting port, it is possible to form a slit nozzle in which the fluid jetting state is changed. That is, by forming the ejection guide parallel surfaces long, the fluid will be ejected straightly, and by forming the parallel surfaces short, the fluid will be ejected in a diffused manner. Therefore, it is rational to provide a slit nozzle that matches the shape of the object to be cleaned and the cleaning method.

Fluid can be sprayed radially, so
Even narrow spaces inside the cylinder block bore can be effectively cleaned.

Since the structure is simple, costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional side view showing one embodiment of the present invention;
2 is a perspective view showing the slit nozzle device of the present invention, FIG. 3 is a sectional side view showing a state in which cleaning is performed using a conventional nozzle chamber, and FIG. 4 is a perspective view showing the nozzle chamber of FIG. FIG. 5 is a cross-sectional side view showing a state in which a conventional slit nozzle device is performing cleaning, and FIG. 6 is a perspective view of the slit nozzle device shown in FIG. 5. 15... Slit nozzle device, 16... Fluid supply pipe, 22... Spout nozzle.

Claims (1)

[Claims] 1. One or more sets of slit nozzles constituted by a pair of annular nozzle plates are fixed coaxially near the lower end of a fluid supply pipe whose lower end is closed, and the cross-sectional shape of the slit nozzle is directed outward on the inner surface of the slit nozzle. What is claimed is: 1. A slit nozzle device comprising: a wedge-shaped jet nozzle which is reduced in size; and a jet guide parallel surface parallel to the fluid jetting direction formed at the jetting side end of the jet nozzle.