JPH0979749A - Feed air nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable adjustment of the interval of a discharge port by eliminating a partition from the discharge port to maintain a belt state of air discharged without diffusion even at a point away from a nozzle. SOLUTION: An air supply port is provided at one end of a main pipe part 1 and air exhaust ports 10 are arranged in a row along the length thereof. A distributing grid 12 having a plurality of air insertion holes 13 inside the main pipe part 1 parallel with the air exhaust ports 10. Two guide plates 5 for discharging air are screwed down on the main pipe part facing each other to cover the air exhaust ports 10. The interval between the tip parts of the two guide plates for discharging air forms an air discharge port 3. A path forming part 4 for air discharged is formed at the air discharge port to make air travel straight. The guide plates for discharging air moves in the circumferential direction of the main pipe part thereby enabling adjusting of the interval of the discharge port free to expand or narrow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is connected to a hot air generator or the like via a pipe, blows hot air or the like discharged from the hot air generator or the like onto various products, and is used for drying or draining the products. The present invention relates to a blower nozzle for improving the nozzle that can discharge a wide band-like hot air or the like.

[0002]

2. Description of the Related Art FIG. 5 is an overall perspective view showing an example of a conventional blower nozzle, and FIG. 6 is a transverse sectional view of the blower nozzle shown in FIG. The blowing nozzle shown in these figures is described in Japanese Utility Model Laid-Open No. 3-6291 devised by the representative of the applicant of the present application. As can be seen from FIG. 5, this nozzle is provided with an air supply port 41 at one end of a tubular body 40, and a plurality of rows of blowout slits 42 for ejecting air are provided in the longitudinal direction thereof. There are various types of the blow-out slits 42, such as one that is horizontally arranged in one row, and one that is vertically arranged in two rows in two rows. Further, as shown in FIG. 6, three partition plates 45, 46 and 47 are provided inside the main body 40 substantially in parallel with the blowout slit 42. A plurality of air insertion holes 48, 49, 50 are appropriately formed in these partition plates 45, 46, 47 at different positions in each partition plate, whereby the air flow is rectified and the inflow direction is changed. It functions so that air can be discharged in a direction perpendicular to the direction, that is, in a direction perpendicular to the longitudinal direction of the tubular body 40. Further, in this conventional example, in order to make the air volume and the air pressure of the discharge air discharged from the blowout slit 42 uniform on the root side and the tip side of the nozzle, the intermediate partition plate 46 is formed on the root side and the tip side thereof. The distance between the partition plate 45 and the partition plate 45 can be adjusted so as to be wide and narrow on both sides of the base plate and the front end. Incidentally, reference numerals 51 and 52 in FIG. 6 denote air flow rate adjusting plates. By appropriately sliding the air flow rate adjusting plate 51 in the front-back direction of the paper surface in the figure, the opening area of the air insertion hole is changed, That adjustment is made.

[0003]

In the above-mentioned conventional nozzle, a plurality of blowout slits for ejecting air are first provided. This is because the tubular body is made of steel pipe and a certain thin plate of steel,
This is because it is impossible to provide only one long slit in the longitudinal direction in consideration of its strength, and therefore slits having a constant short length are arranged in one or two rows to form a blowout slit. It was. Therefore, in the conventional slits of the nozzle, there were some partitioning portions where the air was not ejected in all of them. As a result, strictly speaking, a plurality of strip-shaped discharge air having a short width are lined up and discharged over a constant width. As a result, the wind speed of the discharged air was uneven. Further, the discharge air A discharged from the blowout slits (see FIG. 6) diffuses immediately after being discharged from the blowout slits 42 having a narrow interval, and at a position separated from the slit by a certain distance, the wide band-like discharge air A The current situation is that it is no longer in the shape of a strip and spreads. Further, in the conventional nozzle, many constituent parts are used, and moreover, since it is manufactured by welding, the manufacturing thereof requires a lot of labor. In addition, since the conventional nozzle cannot be disassembled to clean the inside, there remains a problem of how to clean the inside of the nozzle when it is used for drying food or the like. The present invention, in order to solve these problems, to eliminate the partition from the blow-off slit serving as a discharge port, discharge air continues to remain in a strip-like state without spreading even at a location away from the nozzle, Further, it is an object to provide a blower nozzle which is easy to manufacture and whose interior can be cleaned.

[0004]

In order to solve the above problems, in the first aspect of the present invention, an air supply port 2 is provided at an appropriate position of the tubular main pipe portion 1, and the main pipe portion 1 is provided. Is provided with an air discharge hole 10 in the longitudinal direction thereof, and at least two air discharge guide plates 5 and 5 are opposed to each other along the longitudinal direction of the main pipe portion 1 so as to cover the entire air discharge hole 10. The air discharge guide plates 5 and 5 are formed so that the distance between the tip portions of the air discharge guide plates 5 and 5 forms the air discharge port 3, and the air discharge guide plates 5 and 5 that form the air discharge port 3 are provided at the tip portions thereof. Is provided with a passage forming portion 4 having a predetermined length in the air discharge direction, a space 8 is provided between the air discharge port 3 and the air discharge hole 10, and the at least two air discharge guide plates 5 are provided. To be movable to the main pipe section 1 Thus the spacing of the air discharge port 3 is obtained by allowing regulation wide and narrow freely. With this configuration, the discharged air can maintain a wide band-like state even at a certain distance away from the nozzle, and the speed of the discharged air can be adjusted.

According to a second aspect of the present invention, in the first aspect of the present invention, a plate-shaped member having a certain thickness is used as the air discharge guide plate 5, and the air discharge guide plates 5 and 5 are formed. It is possible to change the air ejection direction by attaching the front end portion and the rear end portion to each other in reverse and making the front end surface portion of one air ejection guide plate 5 face the back surface of the other air ejection guide plate 5. . As a result, it is possible to easily change the discharge direction of the discharge air as well as adjust the interval between the air discharge ports. According to a third aspect of the present invention, in the first or second aspect of the invention, at least one straightening grid having a plurality of air insertion holes 13 substantially in parallel with the air discharge holes 10 provided in the main pipe portion 1. 12 is disposed inside the main pipe portion 1. As a result, even if the wind speed of the supply air increases above a certain value, the presence of the flow straightening grid 12 effectively changes the discharge direction of the discharge air so as to be perpendicular to the longitudinal direction of the main pipe portion. According to a fourth aspect of the present invention, in the first to third inventions, the main pipe portion 1, the rectifying grid 12, the air discharge guide plate 5, and the end face plate 18 constituting the end face portion of the main pipe portion 1 are respectively provided. The nozzle can be disassembled by forming them separately, assembling them, and fixing them by fixing means such as screws. As a result, no welding is required,
The nozzle can be easily assembled, and the inside of the nozzle can be easily cleaned by disassembling the nozzle.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show an embodiment of the present invention. FIG. 1 is an overall perspective view of the present invention. The tube-shaped main pipe portion 1 is provided with an air supply port 2 at one end face thereof, and an air discharge port 3
Is formed by the gap between the tips of the two air discharge guide plates 5, 5. Therefore, the air discharge port 3 is the
It is formed from one narrow slit from one end to the other end, and there is no partition part in the middle, so that a uniform wide-belt-shaped discharge air is obtained and wind speed unevenness occurs. Absent. The air discharge guide plates 5, 5 are fixed to the main pipe portion 1 by screws 6, 6, ... And furthermore, the screw insertion holes 7 provided in the air discharge guide plate 5,
.. are formed in long holes (long holes that are long in the direction perpendicular to the longitudinal direction of the main pipe portion 1), the mounting positions of the air discharge guide plates 5, 5 to the main pipe portion 1 are It can be changed to a circumferential direction orthogonal to the longitudinal direction of the portion 1. As a result, the width of the space between the tip portions of the two air discharge guide plates 5 and 5,
That is, it is possible to freely adjust the width of the space between the air discharge ports 3. As a result, the volume and speed of the discharged air can be adjusted. In the lower air ejection guide plate 5 in the drawing, the screw insertion hole and the screw are not shown in order to avoid complication of the drawing.

FIG. 2 is an exploded perspective view of the end face side of the nozzle according to the above embodiment, which is opposite to the air supply port. The main pipe portion 1 has a substantially rectangular cross-section in the rear side opposite to the air discharge holes 10 arranged in a large number, and the air discharge hole 10 side at the tip side thereof has a substantially trapezoidal shape. It is composed of a hexagonal rectangular tube body having the above, and is integrally manufactured by drawing aluminum. Inside the main pipe portion 1, in parallel to the air discharge hole 10, both side edges are slightly bent in the same direction, and a strip plate-shaped rectifying grid 12 is provided.
Is arranged (in FIG. 2, the rectifying grid 12 is shown outside). A large number of air insertion holes 13, ... Are bored in the rectifying grid 12, and the air supplied from the air supply port is provided in the rectifying grid 12 arranged inside the main pipe portion 1. .. and further passes through the air discharge holes 10, .. of the main pipe portion 1 to be rectified to change its direction to a direction perpendicular to the longitudinal direction of the main pipe portion 1. , Will be discharged from the air discharge port.

The air discharge guide plates 5, 5 are joined so as to be along the inclined surfaces 9, 9 of the main pipe portion 1 on the side of the air discharge hole 10, and the long length provided on the air discharge guide plate 5. The screw insertion hole 7 of the hole and the screw hole 15 provided in the inclined surface 9 of the main pipe portion 1 are aligned with each other and fixed by screws. The rectifying grid 12 is arranged in the main pipe portion 1, and the air discharge guide plate 5,
5 is screwed, and finally, the end face plate 18 of the end face portion and the end face plate provided with the air supply port on the opposite end face are respectively screwed to the end portions of the main pipe portion 1 to complete the nozzle of the present invention. In the drawing, 19 are screw holes for fixing the end plate 18 with screws, but the screw holes to be provided in the inclined surface 9 on the right side in the drawing are for clarifying the air discharge hole 10. , Not shown.

The rectifying grid 12 is positioned by the screw holes 19 and fixed by the end plate 18. Further, the positioning of the rectifying grid 12 is performed by these screw holes 19
Alternatively, it is naturally possible to provide a ridge in the main pipe portion 1 as appropriate. In this way, the blow nozzle according to the present invention can be assembled and fixed by the screw without using welding at all, and therefore can be easily disassembled by removing the screw. Further, the main pipe portion 1 according to the present invention
Is manufactured by drawing aluminum, and the main pipe part of an appropriately long length is manufactured in advance, the length is appropriately determined according to the request of the customer, and the nozzle is cut to manufacture it. Is possible. And, without the need for a plurality of partition plates or movable partition plates for adjusting the air volume and direction as in the conventional case, the length of the main pipe section 1 and the interval between the air discharge ports can be adjusted, and the air volume of the supplied air can be adjusted.・ Most suitable for the wind speed, and a wide strip-shaped discharge air can be obtained at right angles from the nozzle.

FIG. 3 is a cross-sectional view of the above embodiment.
The main pipe portion 1 has a hexagonal cross section, and a plurality of air discharge holes 10 are provided on the discharge port side (lower side in the figure) of the main pipe portion 1. Inside the main pipe part 1, a plurality of air insertion holes 13 are provided.
The air flow guide plates 5 are provided on the inclined surfaces 9 and 9 on both sides of the surface of the main pipe portion 1 on which the air discharge holes 10 are provided. The space between the leading edges of the air discharge guide plates 5 and 5 forms the air discharge port 3. Therefore, there is a space between the air discharge port 3 and the air discharge hole 10 of the main pipe portion 1. Further, since the air discharge guide plates 5 and 5 can be appropriately moved and screwed along the inclined surfaces 9 of the main pipe portion 1 as described above, the interval between the air discharge ports 3 can be adjusted to be wide or narrow. You can do it. In the figure, a screw for screwing the air discharge guide plate 5 to the main pipe portion 1 is omitted.

The air passage forming portions 4 and 4 of the air discharge port 3 are formed by the tip end face portions of the air discharge guide plates 5 and 5, and as can be seen from FIG. Since the air discharge guide plate 5 has an appropriate thickness, the air passage forming portion 4 has a constant length P. It is preferable to set the length P to about 5.0 mm to 8.0 mm, and in this embodiment, it is set to 7.0 mm.
Since the air passage forming portion 4 has the constant length P, the directionality of the discharge air is well determined, and the discharge air is discharged more accurately at a right angle to the longitudinal direction of the main pipe portion 1,
Moreover, the discharge air does not diffuse even at a position apart from the air discharge port of the nozzle by a certain distance,
You will go straight ahead. As a result, wide-belt-shaped discharge air can be obtained even at a position away from the discharge port. Furthermore, in the nozzle of the present invention, the tip of the air discharge guide plate 5 on the discharge port 3 side and the rear end of the opposite side can be attached and fixed in reverse.

FIG. 4 is an explanatory view showing various modes of mounting the air discharge guide plates 5, 5 according to the present invention to the main pipe portion 1, and the internal structure of the main pipe portion 1 is omitted. . FIG. 4A is the same as the case shown in FIG.
In FIG. 4B, the air discharge guide plates 5 and 5 are attached in reverse, that is, the front end side and the rear end side are reversely attached, and the right side is attached to the back surface of the air discharge guide plate 5 on the left side in the drawing. 4 (C) shows the case opposite to the case of FIG. 4 (B). In the case of FIG. 4A, the direction of the air passage forming portion forming the air discharge port 3 is perpendicular to the longitudinal direction of the main pipe portion 1, and the air is discharged directly downward in the figure without being diffused. In the case of FIG. 4B, the direction of the air passage forming portion forming the air discharge port 3 is deflected to the right side in the drawing. In the case of FIG. 4C, the direction of the air passage forming portion forming the air discharge port 3 is deflected to the left side in the drawing. In this embodiment,
The angle between the inclined surfaces 9, 9 of the main pipe portion 1 and the air discharge guide plates 5, 5 is set to 75 degrees. This angle can also be changed as needed.

Although the embodiments have been described above, the sizes, shapes, and the like of the various constituent elements according to the present invention can be arbitrarily designed and changed. The cross-sectional shape of the main pipe portion 1 does not have to be the hexagonal shape as described above. The rectifying grid 12 may also be in the shape of a simple elongated rectangular strip plate,
Both edges need not be bent. The shapes and numbers of the air discharge holes 10 and the air insertion holes 13 can be freely designed. The position of the air supply port 2 can also be provided not at the end face of the main pipe portion but at an appropriate position on the side face in the longitudinal direction thereof, or it can be provided at the central portion of the rear side face opposite to the air discharge hole. Can be designed to. The thickness of the air discharge guide plate 5 is also free, but the air discharge port 3
In order to make the length of the air passage forming portion 4 for forming the air flow constant more than a certain value, it is desirable that the thickness is more than a certain thickness.

On the other hand, it is also possible to use a thin plate for the air discharge guide plate 5. In this case, the tip edge of the air discharge guide plate is appropriately bent in the air discharge direction, and the bent part is bent. The portion may be formed to have a desired length to form the passage forming portion. Further, by stacking a plurality of thin air discharge guide plates, it is possible to form a thick plate, and it is also possible to implement two or more air discharge guide plates, for example, in the longitudinal direction. Alternatively, the air discharge guide plate may be divided into a plurality of parts. The position and the number of screw holes 19 for fixing the end plate 18 with screws can be designed quite freely. Incidentally, as for the rectifying grid 12, one of the rectifying grids 12 is arranged in the main pipe portion 1 in the above-mentioned embodiment, but it is arranged especially in the main pipe portion when the wind speed of the supply air is below a certain value. It is also possible to carry out without the rectifying grid 12. On the other hand, when the air velocity of the supplied air is extremely high, it is possible to implement this with two rectifying grids.

[0015]

The present invention having the above-described structure has the following effects. In the first aspect of the present invention, since the air discharge port has the passage forming portion having a constant length in the discharge direction, the discharge air can proceed satisfactorily straight in the direction of the passage forming portion, and the nozzle Even at a certain distance away from the air discharge port of, the discharge air can maintain a wide band-like state,
There is no fear that the discharge air will diffuse. The air discharge port is formed by one slit, there is no partition part in the middle, and the unevenness of the air velocity of the discharge air does not occur. The air discharge guide plate can be moved and fixed, the distance between the tips of the air discharge guide plate, that is, the distance between the air discharge ports can be adjusted wide and wide, and the air volume and speed of the discharge air can be adjusted appropriately. be able to. In the second aspect of the present invention, in addition to the above effect, the ejection direction of the ejection air can be easily changed by attaching the front end and the rear end of the air ejection guide plate in reverse. In the third aspect of the present invention, by adding the rectifying grid, even if the wind speed of the supply air exceeds a certain value, the discharge air is effective in the discharge direction at right angles to the longitudinal direction of the main pipe portion. Can be changed to. In a fourth aspect of the present invention, a main pipe portion, a rectifying grid, an air discharge guide plate,
And the end face plates that form the end face part of the main pipe part are formed separately, and they can be disassembled by assembling and fixing them, so that the nozzle can be easily installed without any welding or the like. It can be assembled and the nozzle can be disassembled for easy cleaning inside. This allows it to be used in food-related manufacturing processes such as food drying. As described above, the present invention exerts a great effect.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a blowing nozzle according to the present invention.

FIG. 2 is an exploded perspective explanatory view of one end portion of the nozzle shown in FIG.

3 is a cross-sectional view of the nozzle shown in FIG.

FIG. 4 is an explanatory view illustrating various mounting examples of the air discharge guide plate of the blower nozzle according to the present invention, in which (A) shows a state in which the leading edges of the air discharge guide plates face each other. 3 (B) and (C) show a state in which the respective air discharge guide plates are attached in reverse, and the leading edge of one air discharge guide plate is opposed to the inner surface of the other air discharge guide plate. ing.

FIG. 5 is an overall perspective view of a conventional blower nozzle.

FIG. 6 is a cross-sectional view of a conventional blowing nozzle.

[Explanation of symbols]

1 main pipe part, 2 air supply port, 3 air discharge port, 4
Passage forming part, 5 air discharge guide plate, 8 space, 1
0 air discharge hole, 12 straightening grid, 13 air insertion hole

Claims (4)

[Claims] 1. An air supply port (2) is provided at an appropriate position of a tubular main pipe part (1), and an air discharge hole (10) is provided in the longitudinal direction of this main pipe part (1). Main pipe part so as to cover the entire discharge hole (10)
At least two air discharge guide plates (5) (5) are provided so as to face each other along the longitudinal direction of (1), and the distance between the tip portions of these air discharge guide plates (5) (5) is large. Forms an air outlet (3), and this air outlet
The air discharge guide plate (5) forming (3) (5) has a passage forming portion (4) having a predetermined length in the air discharge direction at the tip portion of the plate.
A space (8) is provided between the air discharge port (3) and the air discharge hole (10), and the at least two air guide plates (5) are provided in the main pipe section.
A blast nozzle characterized in that the space between the air outlets (3) can be adjusted wide and narrow by making it movable to (1). 2. A guide plate for air discharge, wherein a plate-shaped member having a constant thickness is used as the guide plate for air discharge.
(5) The front end and the rear end of (5) are attached reversely, and the air is ejected by making the tip end face of one air ejection guide plate 5 face the back surface of the other air ejection guide plate 5. The blowing nozzle according to claim 1, wherein the direction can be changed. 3. An air discharge hole (10) provided in the main pipe section (1).
3. The blowing nozzle according to claim 1 or 2, wherein at least one straightening grid (12) having a plurality of air insertion holes (13) is arranged inside the main pipe part (1) substantially in parallel therewith. . 4. An end face plate which constitutes an end face part of the main pipe part (1), a rectifying grid (12), an air discharge guide plate (5), and the main pipe part (1).
The blower nozzle according to any one of claims 1 to 3, wherein the nozzles can be disassembled by forming the (18) separately, assembling them, and fixing them by fixing means such as screws.