GB2172396A

GB2172396A - Mounting vanes in a ventilating grill

Info

Publication number: GB2172396A
Application number: GB08604817A
Authority: GB
Inventors: Yoshiki Takahashi
Original assignee: Kawasaki Heavy Industries Ltd; Kawasaki Jukogyo KK
Current assignee: Kawasaki Heavy Industries Ltd; Kawasaki Motors Ltd
Priority date: 1985-02-28
Filing date: 1986-02-27
Publication date: 1986-09-17
Also published as: JPS61197942A; CA1279788C; GB8604817D0

Abstract

The grill comprises a frame 2, a plurality of hollow spacers 3, 4, interposed between adjacent vanes, and bolts 5, extending through the vanes and spacers and fastened to the frame by washers 6 and nuts 7. The holes in the vanes for receiving the bolts may be replaced by slots to enable easy removal of the vanes, and the vane mounting arrangement may also be applied to circular grills. <IMAGE>

Description

SPECIFICATION Structure for mounting straightening vanes in ventilating port The present invention relates to a structure for mounting straightening vanes in a ventilating port.

The prior art will now be described with reference to Figures 12-15. Figure 12 is a plan view of a ventilating port including straightening vanes; Figure 13 is a cross-sectional view taken along a line Xlll-Xlll in Figure 12; Figure 14 and 15 are perspective view respectively showing different parts of a structure mounting straightening vanes in the ventilating port.

Referring to Figure 12, there are shown a frame 28 and a plurality of straightening vanes 27 which are mounted on the frame 28 and extend parallel one above another. As seen from Figure 12, each of the straightening vanes 27 has reduced tips G formed on the opposite ends thereof. Each of the reduced tips G is inserted into the corresponding aperture (not shown) formed in the frame 28 and rigidly secured to the frame by any suitable means such as welding or brazing. Alternatively, each of the straightening vanes 27 may be butt-welded directly to the frame 28 at the opposite ends of the straightening vane. If each of the straightening vanes 27 has its relatively large length, it may suitably be supported by any number of vane supporting members 29.

As seen from Figure 14, each of the vane supporting members 29 may rigidly be mounted on the frame 28 by inserting projections H formed in the opposite ends of the member into the corresponding slots 28a in the frame 28 and welding or brazing them to the frame 28. Alternatively, the opposite ends of each vane supporting member 29 may be butt-welded directly to the frame 28.

Notches E and F are respectively formed in the vane supporting members 29 and the straightening vanes 27, as shown in Figure 15. Each of the vane supporting members 29 is assembled with and welded or brazed to the straightening vanes 27 at the notches E and F. Such a structure has the following problems: (a) Welding or brazing is necessary to secure the vane supporting members 29 and the straightening vanes 27 to each other and to the frame 28. Materials to be used are limited.

(b) The formation of the notches E and F in the vane supporting members 29 and straightening vanes 27 is cumbersome.

(c) Since the vane supporting members 29 and the straightening vanes 27 are welded or brazed to each other and the frame 28, it is very difficult to repair the structure, if damaged.

It is therefore an object of the present invention to provide a vane mounting structure which can mount straightening vanes on a ventilation frame without welding or brazing and without any formation of notches, thereby to facilitate machining, assembling and repairing of the structure without limitation of material.

To accomplish the above object, the present invention provides a structure for mounting a plurality of straightening vanes in a ventilating port, said structure comprising a frame fitted into the ventilating port, a plurality of hollow liners each located between each adjacent straightening vanes, bolt means extending through the straightening vanes and liners and clamped against the frame.

Structures, constructed in accordance with the invention, for mounting a plurality of straightening vanes will now be described by way of example only with reference to the accompanying drawings, in which: Figure lisa plan view of a first embodiment of a ventilating port according to the present invention.

Figure 2 is a cross-sectional view taken along a line ll-ll in Figure 1.

Figure 3 is an exploded perspective view, partly broken away, of the primary part of the structure shown in Figures 1 and 2.

Figure 4 is a perspective view of part of a starightening vane.

Figure 5 is a view similar to Figure 4, showing a modification of the straightening vane.

Figure 6 is a plan view of a second embodiment of the ventilating port according to the present invention, the port being of a circular configuration.

Figure 7 is a cross-sectional view taken along a line VII-VII in Figure 6.

Figure 8 is an exploded cross-section of the primary part of the structure shown in Figures 6 and 7.

Figure 9 is a front elevational view, partly broken away, of a third embodiment of the structure according to the present invention.

Figure 10 is a view similar to Figure 9, showing a fourth embodiment of the present invention.

Figure ills a front exploded view of the primary part of the fourth embodiment shown in Figure 10.

Figure 12 is a plan view of a ventilating port according to the prior art.

Figure 13 is a cross-sectional view taken along a line XIII-XIII in Figure 12.

Figure 14 is a perspective view of part of the prior art structure shown in Figures 12 and 13.

Figure 75 is an exploded perspective view of another part of the prior art structure shown in Figures 12 and 13.

Referring to Figures 1 to 5, there is shown a vane mounting structure comprising a frame 2 fitted into a ventilating port, a plurality fo straightening vanes 1 mounted in the frame 2, a plurality of hollow liners 3 and 4 disposed between adjacent straightening vanes 1, through-bolts 5 extending through the straightening vanes 1 and the hollow liners 3 and 4, and nuts 7 clamped against the through bolts 5. If desired, detent washers 6 such as spring washers may be used with the nuts 7.

The straightening vanes 1 and frame 2 are respectively provided with bolt apertures 1a and 2a through which the bolts Swill extend. The bolt apertures 1 a or 2a are spaced away from one another a given interval of distance on the same member.

As seen from Figures 2 and 3, one of the hollow liners 3 is interposed between each adjacent straightening vanes 1 while each of the hollow liners 4 is interposed between the inner wall of the frame 2 and the adjacent straightening vane 1. A bolt 5 is passed through a series of aligned liners 3 and 4 and through a series of aligned bolt apertures la and 2a on the vanes and frame. Thereafter, a nut 7 is clamped against the threaded end of the bo It 5. This is repeated for the respective bolts 5.

Each of the bolt apertures lain the straightening vanes 1 may be replaced by a notch B formed at one edge in the corresponding vane 1, as shown in Figure 5. Such an arrangement is advantageous when the straightening vanes are easily repaired or replaced by different straightening vanes, since the straightening vanes can be removed from and mounted on the frame 2 simply by loosening the nuts 7. If desired, any suitable washers may be located on the straightening vane between it and the adjacent liner.

Although the first embodiment of the present invention has been described asto a rectangular ventilating port having linear vanes, the present invention may be applied to a cylindrical ventilation port as in the second embodiment of the present invention.

Referring to Figures 6 to 8, there is shown a ventilating port comprising straightening vanes 8, a mounting frame 9 having an internal surface serving as a straightening surface, hollow liners 10, through bolts 11 and cap nuts 13. If desired, washers 12 may be used between the cap nuts 13 and the adjacent vanes 8.

In the first and second embodiments, the straightening vanes are positioned perpendicular to the hollow liners and through-bolts. However, the straightening vanes may be disposed slantingly with respect to the liners and through-bolts, as shown in Figure 9.

Referring to Figure 9, each of straightening vanes 14 is interposed between the slanted ends of adjacent hollow liners 16 and 17. A series of slanted vanes 14 and liners 16,17 are rigidly mounted on a frame 15 similarly by the use of through-bolt 18 and nut 19.

Although the first, second and third embodiments have been described as to the use of linear bolts, the latter may be replaced by arcuate bolts which are used to mount straightening vanes of L-shaped cross-section on a frame as in the fourth embodiment of Figures 10 and 11.

Referring to Figures 10 and 11, each ofthe L-shaped straightening vanes 20 is interposed between the ends of hollow liners 22, 23; 23, 23; or 23, 24 which ends are shaped to be compatible with the cross-section of the straightening vane. An arcuate through-bolt 25 is thereafter passed through a set of straightening vanes 20 and hollow liners 22,23 and 24 and fastened against a frame 21 by the use of a nut 26. It is preferred that the hollow linears 22,23 and 24 are arcuate as in the through bolt 25. If the curvature of radius in the arcuate through-bolt 25 is relatively large, however, the hollow liners may be linear.

The present invention has the following advantages: (a) Machining and assembling can be facilitated since any welding or brazing is unnecessary.

(bl Repair and replacement can be also facilitated for the same reason.

(c) For the same reason, alteration or deformation of the parts making up the structure will not arise.

(d) Materials to be used can be selected without any limitation.

The straightening vanes are so called because they serve to straighten the air or gas flow through the ventilating port.

The parts termed "linears" could equally be termed "spacers".

Claims

1. A structure for mounting a plurality of straightening vanes in a ventilating port, said structure comprising a frame to fit into the ventilating port, a plurality of hollow spacers interposed between adjacent straightening vanes, and bolt means extending through said straightening vanes and said hollow spacers and fastened to said frame.

2. A structure as defined in claim 1 wherein each of said straightening vanes is provided with notch means through which said bolt means will be passed.

3. A structure as defined in claim 1 wherein each of said straightening vanes is of an annular configuration and wherein said straightening vanes are concentrically disposed.

4. A structure as defined in claim 1 wherein each of said hollow spacers is of a cylindrical shape having slanted end faces.

5. A structure as defined in claim 1 wherein said bolt means is non-rectilinear.

6. A structure for mounting a pluralityofstraightening vanes in a ventilating port, the structure being substantially as herein described with reference to, and as illustrated by, Figures 1, 2,3 and 4 of the accompanying drawings.

7. A structure as defined in claim 6, but modified substantially as herein described with reference to, and as illustrated by, Figure 5 of the accompanying drawings.

8. A structure for mounting a plurality of straightening vanes in a ventilating port, the structure being substantially as herein described with reference to, and as illustrated by, Figures 6,7 and 8 of the accompanying drawings.

9. A structure for mounting a plurality of straightening vanes in a ventilating port, the structure being substantially as herein described with reference to, and as illustrated by, Figures 9,10 and 11 of the accompanying drawings.