US2689515A

US2689515A - Nozzle structure for air distributing apparatus and the like

Info

Publication number: US2689515A
Authority: US
Inventors: Jr John R Andrews
Original assignee: BACHMANN UXBRIDGE WORSTED CORP
Current assignee: BACHMANN UXBRIDGE WORSTED Corp
Priority date: 1951-12-07
Filing date: 1951-12-07
Publication date: 1954-09-21
Anticipated expiration: 1971-09-21

Description

sept, 21, 1954 J. NOZZLE STR R. ANDREWS, JR UcTuRr: FoR

,689,515 AIR DISTRIBUTING IKE APPARATUS AND THE L Filed Dec. 7. 1951 Patented Sept. 21, 1954 N OZZL STRUCTURE FOR AIR DISTRIBUT- IN Gr` APPARATUS AND THE LIKE John R. Andrews, Jr.,

to Bachmann Uxbri Uxbridge, Mass., setts Uxbridge, Mass., assigner dge Worsted Corporation, a corporation of Massachu- Application December 7, 1951, Serial No. 260,446

5 Claims.

This invention relates to apparatus for delivering an attempered stream of air to and through a web, such for example as a warp sheet and the like. For convenience the apparatus will be referred to herein as a drier and in the embodiment of the invention shown in the drawings an important part of the invention is embodied in the nozzle structure of an air distributing header which is shown positioned within a drying box of the general kind disclosed in United States Patent No. 2,541,383, issued February 13, 1951, and my co-pending applications Serial No. 122,482, led October 20, 1949, now Patent No. 2,601,080 and Serial No. 128,134, led November 18, 1949.

An object of this invention is to provide a simple, compactapparatus of the above mentioned kind.

Another object of the invention is to provide improved, nozzle structure for delivering attempering air gently` and uniformly to and through a web, such for example as a warp sheet and the like, without stretching, elongating, or otherwise distorting the threads, yarns, laments etc. of which it is comprised.

Other objects of the invention will be in part obvious or in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements, arrangements of parts, and in the several steps and relation and order of each of `said steps to one or more of the others thereof, all as will. be pointed out in the following description, and the scope of the application of which will be indicated in the following claims.

The invention will best be understood if the following description is read in connection with the drawings, in which,

Figure 1 is a side elevation, partly in cross section, of an embodiment of the invention;

Figure 2 is a fragmentary View, also in side ele- `vation, of a portion of the composite nozzle structure of the header shown in Figure 1; and

Figure 3 is a vertical cross sectional view taken on the line 3-3 of both Figures 1 and 2.

In the embodiment of the invention disclosed herein a closure I is provided into which a warp sheet W is introduced through port I2 in the rear wall, and from which the warp sheet is discharged through the air inlet port I4 in the front wall. An air outlet I5 with a suction fan I5a is provided near the top of the rear wall of closure I0 through which is discharged the increment of the air which has passed through the wettest portion of the warp sheet. Before enter- Cil `header will ll the header ing into closure i0 the warp sheet passes through a sizing bath and rolls, indicated generally by the numeral I6. l

Within closure Io is provided an elongated single header i8 the upper surface of which comprises a series of composite nozzles, to be more fully described. Header i8 extends forwardly and upwardly from just below entrance port I2 toward the top of the front wall of closure i9. Two rollers 24 and 26 are provided in spaced relation longitudinally of the header near the front end of said header and a single roller 28 is provided adjacent the rear end of said header above port i 2, and the warp sheet W is led from the sizing bath IG through entrance port I2 through a long reach and around roller 24, in a path parallel and adjacent to the upper surface of the header, and thenback to roller 28 through a second reach substantially parallel to said first reach, and around roller 28 and back to roller 2S through a third reach substantially parallel to said first and second reaches, and, after passing over roller 26 the Warp sheet is led down to roller 30 adjacent the exit port of the chamber 9 and out through the said air inlet port I4.

In its first reach the warp sheet may be divided into a number of sheets as for example by the splitter rollers 32, 34 and 36, as shown for example in my co-pending applications Serial No.

122,482, led October 20, 1949,` and Serial No. 128,134, led November 18, 1949,

Within closure I0, adjacent to and in horizontal alignment with closure port I4, are the heaters 38 through which the incoming air and an increment of the used air is passedinto chamber 49 which communicates with chamber 42 through the vanes or dampers 43 by which the volume of air supplied to chamber 42 may be controlled. Chamber 42 houses air impeller or fan means 44 and has the discharge port 46 communicating with said single header I8. The air from chamoer 42 is distributed within said header by means of baliies 48 and discharged from said header through said composite nozzlesv which are disposed along the upper surface of header I8, and extend laterally throughout substantially the full Width of the header, as shown in Figure 3. The ports comprising the nozzles are made small enough to insure that the air supplied to the and issue in many equally spaced streams of substantially equal volume.

The nozzle structure comprises two series of inwardly opening trough-

like members

52 and 54, disposed in spaced but parallel lines comprising a surface, the top surface as shown herein, of an air distributing apparatus such as header I8. The trough-like members 52 of the iirst or inner series are spaced apart forming ports or channels 56 between successive members. Each member 52 comprises the

side walls

52a and 52c and the end wall 52b extending between the outer ends of said side walls, leaving the memberv open inwardly. Thus each port or channel 56 is denned by the side wall 52c of one member 52 and the side wall 52a of the member 52 nearest to said side Wall 52C.

The members 54 of said second series are similar to members 52 of the rst series and they are spaced apart forming the ports or channels 58 between successive members 54. Each member 54 comprises the side walls 54a and 54c and end wall 54h extending between the outer ends of said side walls. Each port or channel 58 is dened by the side wall 54c of one member 54 and the side wall 54EL of the member 54 nearest to said side wall 54, leaving the member open inwardly. The members 54, however, are offset with respect to members 52 and respectively bridge the channels 55, between successive members 52.

The members 52 are supported at their ends by the side rails or anges 65 and 62 extending longitudinally along the inner surface of the respective side walls 29 and 22 of the header. The side rails or anges 65 and 62 may be welded to the header side walls 20 and 22 respectively or supported at their ends so that they are readily removable and the members 52 may be bolted to said flanges as by bolts b. The members 54 are similarly supported on the side rails or flanges 54 and 66 extending longitudinally along the inner surface of the side walls respectively of the header, and outwardly of anges 65 and 62. The whole assembly comprising supporting members 66-66 and the

members

52 and 54 rest on the angle members 68 and 'E0 projecting inwardly from the header side walls 20 and 22 respectively, and secured thereto by bolts b.

Air supplied into the header will be retarded and distributed by the members 52. Air attempting to enter said members 52 will encounter an air cushion of relatively dead, unmoving air, and, after being slowed down, will be diverted through said channels 56. The air streams issuing from channels 56 will similarly be slowed down by encountering cushions of relatively dead or unmoving air within members 54, causing said air streams to be slowed down and each stream deiiected, and divided into two streams owing around opposite ends of a member 54 and through the channels 58 which are at the opposite ends of said member 54.

It will be seen that part of the air streams from two channels 56 will issue through a single channel 58. Thus as shown in Figure 2 an increment of the air stream owing through one channel 55 will be deflected toward an increment of air y iiowing through the adjacent channel 56, and the air streams .r and y will be caused to flow toward one another, after being diverted by the members 54 bridging said channels 56 respectively, and will thus oppose one another and slow each other further before owing outwardly together through the channel 58.

have found that an unexpectedly gentle and even flow of air may be obtained by this nozzle structure which also has the advantages of simplicity and ease of assembly.

It will thus be seen that there has been provided by this invention an apparatus in which the various objects hereinabove set forth together with many thoroughly practical advantages are successfully achieved. As various possible embodiments might be made of the mechanical features of the above invention and as the art herein described might be varied in various parts, all without departing from the scope of the invention, it is to be understood that all matter hereinbefore set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

What I claim is:

l. The nozzle structure comprising a header having along one surface of a series of troughlike members each opening inwardly and comprising two parallel side walls and an outer wall, said members being spaced apart forming channels between the adjacent side walls of adjacent members, and a second series of inwardly opening trough-like members positioned outwardly from said first series and spaced apart forming channels between adjacent members, and oiiset with respect to said first series causing the members of said second series to bridge the ports respectively of said rst series, whereby air flow within said header is retarded by members of said rst series and directed between the members or the first series, and the low of the air through the ports of said iirst series is retarded by the members of the second series and deflected to pass through the channels of said second series.

2. A nozzle structure comprising a header having along one surface a series of trough-like members each opening inwardly and comprising two parallel side walls and an outer wall, said members being spaced apart forming ports between the adjacent side walls of adjacent members, and a second series of inwardly opening trough-like members positioned outwardly from said iirst series and spaced apart forming ports between adjacent members, and odset with respect to said iirst series causing the members of said second series to bridge the ports respectively of said first series, whereby air iiow within said header is retarded by the members of said irst series and directed between the members cf the first series, and the iiow of the air through the ports of said iirst series is retarded by the members of the second series and deflected to pass through the ports of said second series, the members of said second series each acting to divide the stream of air from one port of said rst series and divert it through two ports of said second series.

3. The nozzle structure comprising a header having along one surface a series of trough-like members each opening inwardly and comprising two parallel side walls and an outer wall, said members being spaced apart forming ports between the adjacent side walls of adjacent members, and a second series of inwardly opening trough-like members positioned outwardly from said first series and spaced apart forming ports between adjacent members, and oiset with respect to said rst series causing the members of said second series to bridge the ports respectively of said rst series, whereby air owwithin said header is retarded by the members of said iirst series and directed between the members of the iirst series, and the flow of the air through the ports of said first series is retarded by the members of the second series and deiiected to pass through the ports of said second series, a `portion of the air iiowing through two successive ports of said iirst series being brought together for passage through a single port of said second series, the increments of air from the said tw-o ports of said first series being deflected toward one another before passage through said port of said second series and thus each exerting an impeding and slowing action one on the other.

4. A nozzle comprising two trough-like members opening inwardly and spaced apart forming a port between them, and a third inwardly opening trough-like member positioned outwardly from said rst two members and bridging the port between said i'lrst two members, whereby air from the port between sai-d two members is dvided by said third member and caused to ow in two streams around opposite sides of said third member.

5. An air distributing header having a discharge wall comprising a series of nozzles, each nozzle comprising five trough-like members disposed with their open ends facing inwardly of the header three in one line and two in a second line spaced from and substantially parallel to said rst line, said three members being spaced apart thus -dening two channels, and. said two members being spaced apart forming between them a channel and being oiset with respect to said three members to bridge the channels respectively defined by said three members.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,354,795 Castle Aug. 1, 1944 2,541,383 Rose Feb. 13, 1951 2,602,314 Cohn et al. July 8, 1952A FOREIGN PATENTS Number Country Date 89,188 Sweden May 4, 1937