CA1166241A - Heat transmission roll and a method and an apparatus for manufacturing such a roll - Google Patents
Heat transmission roll and a method and an apparatus for manufacturing such a rollInfo
- Publication number
- CA1166241A CA1166241A CA000389326A CA389326A CA1166241A CA 1166241 A CA1166241 A CA 1166241A CA 000389326 A CA000389326 A CA 000389326A CA 389326 A CA389326 A CA 389326A CA 1166241 A CA1166241 A CA 1166241A
- Authority
- CA
- Canada
- Prior art keywords
- web
- webs
- indentations
- ribs
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
- F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
- F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
- F28D19/042—Rotors; Assemblies of heat absorbing masses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/027—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers by helically or spirally winding elongated elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Winding Of Webs (AREA)
- Treatment Of Fiber Materials (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Making Paper Articles (AREA)
- Replacement Of Web Rolls (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Peptides Or Proteins (AREA)
- Steroid Compounds (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Detergent Compositions (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Surgical Instruments (AREA)
- Pens And Brushes (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention concerns a roll (12) comprising two superposed webs (6, 7) of material one (6) of which is formed with transverse ridges (10). At the ridge bases and tops are formed indentations (22).
The other web (7) is provided with ribs (27) which are positioned in nesting relationship in the inden-tations, whereby the webs are secured to one another.
The invention likewise concerns a method and a machine for manufacturing rolls of this kind.
Fig. 11.
The invention concerns a roll (12) comprising two superposed webs (6, 7) of material one (6) of which is formed with transverse ridges (10). At the ridge bases and tops are formed indentations (22).
The other web (7) is provided with ribs (27) which are positioned in nesting relationship in the inden-tations, whereby the webs are secured to one another.
The invention likewise concerns a method and a machine for manufacturing rolls of this kind.
Fig. 11.
Description
IJll~KLl~l)lJN~ UF i~fl ~NULNIIlJIU
.~ . . ..
Tlle invention concerns a roll that i manufactured from two superpesed webs, one of which is corrugated, Ths roll is primarily intended For use in so called regenerative heat exchangers It is already known to manufacture rolls for rotating heat-recovery deuices by winding in superpo~ed relationship one smooth web and one corrugated web of a metal Poil, usually an aluminium foil, and joining togeth~r the two webs by means of an adhesive or bonding agent of composite type, rO wind together the two webs the inner ends thereof ara secured on a rotatably driven core sleeve, The smooth web is unreeled from a supply roll onto a spindle provided with a braking mechanism, The webs thus are wound into roll form while under soms tension from the smooth web supply roll, Since the torqu~ axercised by the core sleeve increases as the diameter oP the winding-on roll increasss9 the adhesiue bond between the smooth web and the ridges of the corrugated web will brake at a certain degree of tension in the smooth web on account of the braking force exerted by the unwinding spindle, and as a result one or several oF the winding turns of the wsbs will separate from one another, As a consequence, the entire roll might collapse whsn it is transPerred to a hardening oven for ~tting of the adhesive, Although suPficient amounts oP the binding ,.
.
., agent may remair1 on the ri~ges o~ the corrugated w~b after breakage of the bond to allnw the ridges to adh0re to the smooth W8l~, the adhesive on the smooth web at tho original points of adherence will, howaver, in this casa be positioned on thg gap bstween th~ ridges with the consequential disadvantage that tha cross-sectional are~
for air passage through the rotatably driven roll oF the heat-recouery devices diminishas.
The purpose of the subject invention is to eliminate the glusing operation completely w~1ile at the same time provide considerably more efficient e~change of heat than in heat exchangers fitted with rolls of prior-art types, SlJMMARY OF TH~ INVENTION
In accordance with the invention are used two superposed webs of which the first web is provided with transverse equidistantly spaced ridges whereas the second wsb is provided with longitudinal ribs, The characteristic featurs of the invention resides therein that the ridges of the first web are provided at the ridge tops as well as at the ridge bases with indentations having a pitch matching that of the ribs formsd in the second web9 in which indentations engags said ribs formed in ths second web, The invention also concerns a method of manufac-turing the roll, which method is characterised by the
.~ . . ..
Tlle invention concerns a roll that i manufactured from two superpesed webs, one of which is corrugated, Ths roll is primarily intended For use in so called regenerative heat exchangers It is already known to manufacture rolls for rotating heat-recovery deuices by winding in superpo~ed relationship one smooth web and one corrugated web of a metal Poil, usually an aluminium foil, and joining togeth~r the two webs by means of an adhesive or bonding agent of composite type, rO wind together the two webs the inner ends thereof ara secured on a rotatably driven core sleeve, The smooth web is unreeled from a supply roll onto a spindle provided with a braking mechanism, The webs thus are wound into roll form while under soms tension from the smooth web supply roll, Since the torqu~ axercised by the core sleeve increases as the diameter oP the winding-on roll increasss9 the adhesiue bond between the smooth web and the ridges of the corrugated web will brake at a certain degree of tension in the smooth web on account of the braking force exerted by the unwinding spindle, and as a result one or several oF the winding turns of the wsbs will separate from one another, As a consequence, the entire roll might collapse whsn it is transPerred to a hardening oven for ~tting of the adhesive, Although suPficient amounts oP the binding ,.
.
., agent may remair1 on the ri~ges o~ the corrugated w~b after breakage of the bond to allnw the ridges to adh0re to the smooth W8l~, the adhesive on the smooth web at tho original points of adherence will, howaver, in this casa be positioned on thg gap bstween th~ ridges with the consequential disadvantage that tha cross-sectional are~
for air passage through the rotatably driven roll oF the heat-recouery devices diminishas.
The purpose of the subject invention is to eliminate the glusing operation completely w~1ile at the same time provide considerably more efficient e~change of heat than in heat exchangers fitted with rolls of prior-art types, SlJMMARY OF TH~ INVENTION
In accordance with the invention are used two superposed webs of which the first web is provided with transverse equidistantly spaced ridges whereas the second wsb is provided with longitudinal ribs, The characteristic featurs of the invention resides therein that the ridges of the first web are provided at the ridge tops as well as at the ridge bases with indentations having a pitch matching that of the ribs formsd in the second web9 in which indentations engags said ribs formed in ths second web, The invention also concerns a method of manufac-turing the roll, which method is characterised by the
- 2 -ste~)s of lorrnirl~ inden~ations or-l t~e ri~ges in the first web at the ridge tops as well as at the ridge bases, said indelltations having a pitch matching that of the ribs formed in tile second web, and guiding at least one of the webs so as to ensure that ths ribs are positioned in said indentations.
The invention likewise comprises a machine for manufacturing the roll in accordance with the invention, the machine being characterised in that it comprises 1û first means arranged during the advancement of the second web to form longitudinal ribs in said web, second means arranged during the advancement of the first web to forrn indentations at the ridge tops as well as at ridge bases of the first webs, said indentations having a pitch matching that of the ribs, and third means arranged to control one and/or both webs to ensure that ths ribs of the second web will. engage on the indentations of the first web.
ORIEF DESCRIPTION OF THE D~AWINGS
The invention will be described in closer detail in the following with reference to the accompanying drawings, wherein Fig, 1 is a schematic view of a machine in accordance with the inventiorl, designed to manufacturn rolls consisting of two superposed and interconnected webs of material~
F-igs, 2-4 show in cross-sectional views and on an enlarged scale three different ~tations of producing one oF the webs of rnaterial, FigO 5 is a latsral view of` the station illustrated in Fig, 4, Figs, 6 and ~ ara plan views of the roll winding--on station, showing one of the end sections of the latter in different positions, Fig, 8 illustrates on an enlarged scale a vertical longitudinal section of the winding-on station at ths initial stage of the winding-on, Fig, 9 is a similar view showing a latsr stage of the winding-on, Fig, 10 shows on a still larger scale a section through the outer edge of the rotatably driven end section of the winding-on station, Fig, 11 is a perspective view of a portion of the roll~
Fig, 12 shows on an enlarged scale a cross-sectional view through a part of the roll, Fig, 13 is a section along line XIII-XIII in Fig, 12 in the longitudinal direction of the roll, and Fig, 14 is a partly cut end view of the roll, DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
At each end of an elongate stand 1 are rotatably mounted spindl~; 2, S ~ach one holding a supply roll 4 and 5 of smoot~l aluminium foil webs 6 and 79 The stand also supports a station ~ for imparting corrugations to the web 6 of matgrial, a station 9 for forming indenta tions at the tops and bases of ths ridges 10 of the corrugated wab, and a station 11 to wind the two webs 6 and 7 into a roll 12, The corrugation station ~ comprises two rotatably driven cooperating rollers 13, 14 of cog-wheel appearance between which rollers the web 6 Df material is guided so that transuerse ridges 10 are formed therein, Station 9 which is the station in which the indentations are formed at the tops and bases of the ridges is positioned after ths corrugation station 8, Station 9 consists of two cog-wheel rollers 15, 16 and two back-up rollers 17, 18, The latter are provided with peripheral beads 19 (see Fig, 5) having a shape matching the configur-ation of notches 20 formed at the tops of the cogs 21 of the cog-wheel rollers 15, 16, Because of the flow of material in the press nips formed by the rollers 15, 17 and 16, 18, respectiuely, indentations 22 are formed at the ridge tops as well as at the ridga bases, The indentations 22 at ths tops and bases of the ridges 10 are displaced relative to one another by a distance corresponding to half a pitch (see Fig, 13), `
thus ensuring that the internal through-flow area remains constant over the entire length of the channel A thus formed.
A support plate 23 is arranged after station 9, on which plate the corrugated web 6 slides freely while being advanced. The web further travel~ through a pair of guide or master rollers 24, 25 positioned ahead of the winding-on station 11. These rollers control the rota-tional speed of the rollers 13, 14 in relation to the winding-on speed of the roll 12.
The smooth web 7 is advanced from its supply roller 5. It travels through a pair of cooperating rollers 26 (similar to rollers 17, 18) which are provided with peripheral beads to shape ribs 27 in the web 7. The pitch of the ribs is identical with the pitch of the indentations 22 formed at the tops and bases of the ridges 10. Further, the web 7 passes a heating device 28, preferably consisting of two nozzles co~municating with a source of hot air (not shown). Before reaching the winding-on station 11 the web 7 is guided for lateral alignment by means of an aligner mechanism 29, whereby is ensured that the ribs 27 of the web 7 are received in nesting relationship in the inden-tations 22 and the web 6. Since the web 7 is heated, it will contract when cooled, thus providing safe and secure attachment of the two ~, webs 6, 7 t`orming the roll 12 ~ ons another.
The winding-on station 11 co~lpris~s two coaxial and rotatably mounted end sections 30, 31, The distance separating the end sections in the operative position is approximatsly equal to the width of the webs 6, 7 of material, of which the ribbed web 7 should have a width which is îractionally (pref`erably by 2 millimeters) narrower than the width of the corrugated web 6. The shaft 32 of one of the end sactions 30 is rotatably meuntHd in a bearing 33 in the stand 1 and is driven via a sprocket 34 at the outer end of the shaft 32. At the end opposite the sprocket 34 the shaft 32 is shaped as a trunnion 35 on which may be positioned one end of a core sleeve 36 on which ~h~ wsbs 6, 7 of material are to be wound. An expandable clamping sleeue 3'7 secures the sleave 36 to the trunnion 35, and a bolt 39 with a head 3B thereon passes axially through said clamping sleeue 37, the opposite bolt snd being formed with external threads cooperating with internal threads formed on tensioning slseue 4û which is able to -turn in shaft }2 but which is preuented from performing axial movsments.
rhe opposite end section 31 is by means of its shaft 41 rotatably mounted in a bearing 42 at tha outer end of an arm 43, which is arranged to be pivoted outwards by means of a lever 45 about a vertical shaft 44 provided on the stand 1, In the inner position (~igs. 7, ~ and 9) a pin 46 on the shaft 41 enga9es the free end of the core sleeve 36 (the left-hand end as seen in Figs, ~ and 9), On the face f~cing the opposite end section 31, 5 the end section 30 is provided with a round disc 47 of rubber or similar elastic material which by msans of screws 4~ or equivalent members is attached along its innsr and outar edgas to the end section 30 proper. In thc latter are displaceably mounted a large number of pistons 49 10 each one of which is provided with a head 50 positioned in a depression 51 formed in the end section internally of tha round disc 4?. The free ends 52 of the pistons 49 project beyond the rear face 53 of the end section 30.
Upon rotation of the end sections 30, 31 a roller 15 54 rolls in contact with the rear face 53 of the end section 30, said roller 54 being rotatably mounted on a shaft 55 at the lower end of a guide bar 56. The guide bar 56 is vertically displaceable by means of a guide 57 in a guide track 5~ formed in column 59 mounted above th~ bearing 33.
20 The guide bar 56 is connected with an arm 60 projecting down in the gap 61 between the end sections 30, 31 and at the lower arm end is rotatably mounted a load-exerting roller 62 positioned approximately level with the pressure roller 54.
When the arm 43 has been pivoted outwards (Fig, 6) y _ and a core sleeve 36 has beell mounted in position with one end placed on the pin 35 and the expander sleeve 37 clamped thereto, the ends o~ the w~bs 6 and 7 of material are secured to the core sle~ve with th0 aid o~ an adhesive.
The drive mechanism of the machine is started and the winding-on of the webs onto the core sleeve 36 begins ~s a result of the rotation of the latter and of the end sections 30, 31~ The two webs 6~ 7 are positioned ona on top of` the ether with the ribs 27 engaging in thu indentations 22. As one winding turn after tha other is wound onto tha core sleeve 36, the roller 62 is gradually lifted, bringing along the arm 6~ and the bar 56 including the clamping roller 54~ During the rotation of the end section 30 the pistons 49 move past the roller 54 and in doing so they are urged inwards by the latter into contact with the round disc 47 which then projects like a bow somewhat inwards into the gap 61 betwesn the end sections 30~ 31. This exerts a lateral pressure on tha most recently formed winding turns of the webs 61 7, whereby thase winding turns are clamped in position betwsen the end sections. This means that the pulling f`orce ex~rted by the shaft 32 is tr~nsf`erred directly to these most recent winding turns and the tansile stress exerted by the web 7 which is provided with the ribs 27 and which is retained in a taut condition by the braking mechanism provided on _ 9 _ the unwinding spindle 3, thus is taken by the friction of the webs 6, 7 against the end sections 30, 31. The inner-most winding turns of the webs on the core sleeve 36 thus are relieved. Consequently, there is no risk of compression of the winding turns already wound onto the core sleeve.
When the winding of the roller 12 is completed and the outer winding turn has been fastened with the aid of an adhesive to the underlying winding turn, the arm 43 is again pivoted outwards and the pressure on the expander sleeve 37 i9 relieved. The roll 12 together with the core sleeve 37 may now be removed from the machine. In the sub-sequent cooling of the roll 12 at room temperature the above referred to fixation of the webs takes place owing to the contraction occurring through cooling of the ribbed web. The fixation of the webs to one another means that the finished roll cannot collapse.
The ribs 27 and the indentations 22 form through-flow channels A for the medium flowing through the heat exchanger of the appearance shown in Figure 13. This con~
figuration results in an enlargement of the heat-transmission area and also means that the flow through the channels A will be turbulent and not laminar. In laminar flows (which would have been the case had the limiting faces of the channels been completely straight) the layer of the medium 6~
flowing closest to the llmiting faces acts as insulation, preventing the rest of tl~e madium from contacting these faces~ The turbulent flow generat0d in the channel~ of the roll in accordance with the invention means that a larger portion of the flowing medium will come into close contact with the limiting faces, Thc affect of this phenomenon and of the enlargemellt of th0 heat~transmission area of the channels A as a result of the provision of the ribs 27 make ~or considerably improv~d exchange of heat, The embodiment as described and illustrated is to be regarded as an example only and the various parts of the machine may be constructively altered in a variety of ways within the scope of the appended claims, For instance, the roller 54 externally of the end section 30 may be replaced by a slip shoe supported by the bar 56, Also the opposite end section 31 may be fittsd with a round disc 47 of an elastic material, The slip shoe may have a length and/or width to ensure that it depresses two or several pistons 49 at the same time, There are also other ways of relieving the innermost winding turns~ An arrangement including the use of pneumatically operated pistons which transfer the pulling force to ths outermost winding turn is likewise possible,
The invention likewise comprises a machine for manufacturing the roll in accordance with the invention, the machine being characterised in that it comprises 1û first means arranged during the advancement of the second web to form longitudinal ribs in said web, second means arranged during the advancement of the first web to forrn indentations at the ridge tops as well as at ridge bases of the first webs, said indentations having a pitch matching that of the ribs, and third means arranged to control one and/or both webs to ensure that ths ribs of the second web will. engage on the indentations of the first web.
ORIEF DESCRIPTION OF THE D~AWINGS
The invention will be described in closer detail in the following with reference to the accompanying drawings, wherein Fig, 1 is a schematic view of a machine in accordance with the inventiorl, designed to manufacturn rolls consisting of two superposed and interconnected webs of material~
F-igs, 2-4 show in cross-sectional views and on an enlarged scale three different ~tations of producing one oF the webs of rnaterial, FigO 5 is a latsral view of` the station illustrated in Fig, 4, Figs, 6 and ~ ara plan views of the roll winding--on station, showing one of the end sections of the latter in different positions, Fig, 8 illustrates on an enlarged scale a vertical longitudinal section of the winding-on station at ths initial stage of the winding-on, Fig, 9 is a similar view showing a latsr stage of the winding-on, Fig, 10 shows on a still larger scale a section through the outer edge of the rotatably driven end section of the winding-on station, Fig, 11 is a perspective view of a portion of the roll~
Fig, 12 shows on an enlarged scale a cross-sectional view through a part of the roll, Fig, 13 is a section along line XIII-XIII in Fig, 12 in the longitudinal direction of the roll, and Fig, 14 is a partly cut end view of the roll, DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
At each end of an elongate stand 1 are rotatably mounted spindl~; 2, S ~ach one holding a supply roll 4 and 5 of smoot~l aluminium foil webs 6 and 79 The stand also supports a station ~ for imparting corrugations to the web 6 of matgrial, a station 9 for forming indenta tions at the tops and bases of ths ridges 10 of the corrugated wab, and a station 11 to wind the two webs 6 and 7 into a roll 12, The corrugation station ~ comprises two rotatably driven cooperating rollers 13, 14 of cog-wheel appearance between which rollers the web 6 Df material is guided so that transuerse ridges 10 are formed therein, Station 9 which is the station in which the indentations are formed at the tops and bases of the ridges is positioned after ths corrugation station 8, Station 9 consists of two cog-wheel rollers 15, 16 and two back-up rollers 17, 18, The latter are provided with peripheral beads 19 (see Fig, 5) having a shape matching the configur-ation of notches 20 formed at the tops of the cogs 21 of the cog-wheel rollers 15, 16, Because of the flow of material in the press nips formed by the rollers 15, 17 and 16, 18, respectiuely, indentations 22 are formed at the ridge tops as well as at the ridga bases, The indentations 22 at ths tops and bases of the ridges 10 are displaced relative to one another by a distance corresponding to half a pitch (see Fig, 13), `
thus ensuring that the internal through-flow area remains constant over the entire length of the channel A thus formed.
A support plate 23 is arranged after station 9, on which plate the corrugated web 6 slides freely while being advanced. The web further travel~ through a pair of guide or master rollers 24, 25 positioned ahead of the winding-on station 11. These rollers control the rota-tional speed of the rollers 13, 14 in relation to the winding-on speed of the roll 12.
The smooth web 7 is advanced from its supply roller 5. It travels through a pair of cooperating rollers 26 (similar to rollers 17, 18) which are provided with peripheral beads to shape ribs 27 in the web 7. The pitch of the ribs is identical with the pitch of the indentations 22 formed at the tops and bases of the ridges 10. Further, the web 7 passes a heating device 28, preferably consisting of two nozzles co~municating with a source of hot air (not shown). Before reaching the winding-on station 11 the web 7 is guided for lateral alignment by means of an aligner mechanism 29, whereby is ensured that the ribs 27 of the web 7 are received in nesting relationship in the inden-tations 22 and the web 6. Since the web 7 is heated, it will contract when cooled, thus providing safe and secure attachment of the two ~, webs 6, 7 t`orming the roll 12 ~ ons another.
The winding-on station 11 co~lpris~s two coaxial and rotatably mounted end sections 30, 31, The distance separating the end sections in the operative position is approximatsly equal to the width of the webs 6, 7 of material, of which the ribbed web 7 should have a width which is îractionally (pref`erably by 2 millimeters) narrower than the width of the corrugated web 6. The shaft 32 of one of the end sactions 30 is rotatably meuntHd in a bearing 33 in the stand 1 and is driven via a sprocket 34 at the outer end of the shaft 32. At the end opposite the sprocket 34 the shaft 32 is shaped as a trunnion 35 on which may be positioned one end of a core sleeve 36 on which ~h~ wsbs 6, 7 of material are to be wound. An expandable clamping sleeue 3'7 secures the sleave 36 to the trunnion 35, and a bolt 39 with a head 3B thereon passes axially through said clamping sleeue 37, the opposite bolt snd being formed with external threads cooperating with internal threads formed on tensioning slseue 4û which is able to -turn in shaft }2 but which is preuented from performing axial movsments.
rhe opposite end section 31 is by means of its shaft 41 rotatably mounted in a bearing 42 at tha outer end of an arm 43, which is arranged to be pivoted outwards by means of a lever 45 about a vertical shaft 44 provided on the stand 1, In the inner position (~igs. 7, ~ and 9) a pin 46 on the shaft 41 enga9es the free end of the core sleeve 36 (the left-hand end as seen in Figs, ~ and 9), On the face f~cing the opposite end section 31, 5 the end section 30 is provided with a round disc 47 of rubber or similar elastic material which by msans of screws 4~ or equivalent members is attached along its innsr and outar edgas to the end section 30 proper. In thc latter are displaceably mounted a large number of pistons 49 10 each one of which is provided with a head 50 positioned in a depression 51 formed in the end section internally of tha round disc 4?. The free ends 52 of the pistons 49 project beyond the rear face 53 of the end section 30.
Upon rotation of the end sections 30, 31 a roller 15 54 rolls in contact with the rear face 53 of the end section 30, said roller 54 being rotatably mounted on a shaft 55 at the lower end of a guide bar 56. The guide bar 56 is vertically displaceable by means of a guide 57 in a guide track 5~ formed in column 59 mounted above th~ bearing 33.
20 The guide bar 56 is connected with an arm 60 projecting down in the gap 61 between the end sections 30, 31 and at the lower arm end is rotatably mounted a load-exerting roller 62 positioned approximately level with the pressure roller 54.
When the arm 43 has been pivoted outwards (Fig, 6) y _ and a core sleeve 36 has beell mounted in position with one end placed on the pin 35 and the expander sleeve 37 clamped thereto, the ends o~ the w~bs 6 and 7 of material are secured to the core sle~ve with th0 aid o~ an adhesive.
The drive mechanism of the machine is started and the winding-on of the webs onto the core sleeve 36 begins ~s a result of the rotation of the latter and of the end sections 30, 31~ The two webs 6~ 7 are positioned ona on top of` the ether with the ribs 27 engaging in thu indentations 22. As one winding turn after tha other is wound onto tha core sleeve 36, the roller 62 is gradually lifted, bringing along the arm 6~ and the bar 56 including the clamping roller 54~ During the rotation of the end section 30 the pistons 49 move past the roller 54 and in doing so they are urged inwards by the latter into contact with the round disc 47 which then projects like a bow somewhat inwards into the gap 61 betwesn the end sections 30~ 31. This exerts a lateral pressure on tha most recently formed winding turns of the webs 61 7, whereby thase winding turns are clamped in position betwsen the end sections. This means that the pulling f`orce ex~rted by the shaft 32 is tr~nsf`erred directly to these most recent winding turns and the tansile stress exerted by the web 7 which is provided with the ribs 27 and which is retained in a taut condition by the braking mechanism provided on _ 9 _ the unwinding spindle 3, thus is taken by the friction of the webs 6, 7 against the end sections 30, 31. The inner-most winding turns of the webs on the core sleeve 36 thus are relieved. Consequently, there is no risk of compression of the winding turns already wound onto the core sleeve.
When the winding of the roller 12 is completed and the outer winding turn has been fastened with the aid of an adhesive to the underlying winding turn, the arm 43 is again pivoted outwards and the pressure on the expander sleeve 37 i9 relieved. The roll 12 together with the core sleeve 37 may now be removed from the machine. In the sub-sequent cooling of the roll 12 at room temperature the above referred to fixation of the webs takes place owing to the contraction occurring through cooling of the ribbed web. The fixation of the webs to one another means that the finished roll cannot collapse.
The ribs 27 and the indentations 22 form through-flow channels A for the medium flowing through the heat exchanger of the appearance shown in Figure 13. This con~
figuration results in an enlargement of the heat-transmission area and also means that the flow through the channels A will be turbulent and not laminar. In laminar flows (which would have been the case had the limiting faces of the channels been completely straight) the layer of the medium 6~
flowing closest to the llmiting faces acts as insulation, preventing the rest of tl~e madium from contacting these faces~ The turbulent flow generat0d in the channel~ of the roll in accordance with the invention means that a larger portion of the flowing medium will come into close contact with the limiting faces, Thc affect of this phenomenon and of the enlargemellt of th0 heat~transmission area of the channels A as a result of the provision of the ribs 27 make ~or considerably improv~d exchange of heat, The embodiment as described and illustrated is to be regarded as an example only and the various parts of the machine may be constructively altered in a variety of ways within the scope of the appended claims, For instance, the roller 54 externally of the end section 30 may be replaced by a slip shoe supported by the bar 56, Also the opposite end section 31 may be fittsd with a round disc 47 of an elastic material, The slip shoe may have a length and/or width to ensure that it depresses two or several pistons 49 at the same time, There are also other ways of relieving the innermost winding turns~ An arrangement including the use of pneumatically operated pistons which transfer the pulling force to ths outermost winding turn is likewise possible,
Claims (10)
1. An improved roll intended for transmission of heat, comprising two superposed webs of material and a core sleeve, said webs wound about said core sleeve, the first one of said webs provided with transverse equidistantly spaced ridges and the second one of said webs provided with lengthwise ribs, the improvement comprising indentations formed in the ridges of said first web at the ridge tops as well as the ridge bases, said indentations having a pitch matching that of said ribs, said ribs formed in said second web engaging in said indentations formed in the first web,
2, An improved roll according to claim 1, wherein said indentations formed at the ridge tops of said first web are displaced by half a pitch relative to said indentations formed at the ridge bases of said first web.
3. An improved method of manufacturing rolls consisting of two superposed webs of material wound about a core sleeve, comprising rotatably driving said core sleeve, winding onto said sleeve said two superposed webs of material, the first one of said webs formed with transverse ridges and the second one of said webs formed with lengthwise ribs, the improved method comprising the steps of forming indentations on said ridges in said first web at the ridge tops as well as the ridge bases, said indentations having a pitch matching that of said ribs formed in said second web, and guiding at least one of said webs to securely position said ribs in engagement with said indentations.
4 An improved method according to claim 3, comprising heating said second web provided with said ribs prior to winding said web onto said core sleeve so as to ensure that in a subsequent roll cooling operation said webs will shrink and thus be secured relative to one another.
5, An improved method according to claim 4, comprising two end sections arranged to rotate together with said core sleeve, at least one of said end sections being driven, the winding-on of said webs carried out between said two end sections, at least one of said webs of material, preferably said first web provided with said ridges, being clamped between said end sections during said winding-on operation in order to be rotated by said end sections
6. An improved machine for performing the method according to claim 3 to produce a roll consisting of two superposed webs wound about a core sleeve, said machine comprising a winding-on station, a first one of said two webs of material is formed with transverse ridges, being advanced to said winding-on station, the improvement comprising first means arranged during the advancement of a second one of said webs to form longitudinal ribs in said second web, second means arranged during the advancement of said first web to form indentations at the tops as well as at the bases of said ridges, said inden-tations having a pitch matching that of said ribs, and third means arranged to control at least said first web to ensure that said ribs of said second web will engage in said indentations in said first web,
7. An improved machine according to claim 6, wherein said first means are two cooperating rollers, peripheral beads on said rollers, said beads arranged in such a manner that the beads on one of said rollers engage in the gap between the beads on the other one of said rollers, a press nip thus being formed between said beads on said rollers, the second one of said webs arranged to pass through said press nip, whereby said lengthwise ribs are formed in said second web.
8. An improved machine according to claim 6, wherein said second means arranged to form said indentations at the tops and bases of said ridges in said first one of said webs of material consist of notches, said notches formed at the tips of the cogs of a rotatably mounted cog-wheel roller, and of a second roller, said second roller mounted in parallel with said cog-wheel roller and formed with peripheral beads, said second roller mounted so as to ensure that said beads of said second roller engage in said notches formed in said cog-wheel roller upon rotation of said two rollers, thus forming a press nip through which passes said first web, whereby said indentations are formed therein at said ridge tops and bases.
9. An improved machine according to claim 6, comprising a first rotatably driven end section including a shaft, and a second rotatably mounted end section positioned opposite said first end section, a pin formed on said second end section, said core sleeve arranged to be mounted on said shaft with one of its ends clamped to said shaft whereas the opposite end of said core sleeve is supported on said pin on said opposite end section, and means arranged during the winding-on of said webs onto said core sleeve to exert on at least one of said webs a lateral pressure while clamping said web between said first and said second end sections in order to bring along said web in the rotation of said first and said second end sections.
10. An improved machine according to claim 9, comprising a roller sensing the momentarily outermost winding turn of said roll being formed, said roller being rotatably mounted on an arm, said arm movable towards and away from said core sleeve along a guide means together with a pressure-exerting member, said member arranged to exert a lateral pressure on said outermost winding turn in the direction towards said opposite end section, - 15 _ a portion of said end section provided with said drive shaft being made from an elastic material, such as rubber, and a roller-shaped member forming said pressure member, said member driven by the radial displacement movements of said sensing roller and arranged to press said end section portion resiliently inwards at a point opposite said sensing roller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8008011-2 | 1980-11-14 | ||
| SE8008011A SE444071B (en) | 1980-11-14 | 1980-11-14 | ROTATING REGENERATIVE EXCHANGER, PROCEDURE FOR ITS MANUFACTURING AND MACHINE FOR IMPLEMENTATION OF THE PROCEDURE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1166241A true CA1166241A (en) | 1984-04-24 |
Family
ID=20342243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000389326A Expired CA1166241A (en) | 1980-11-14 | 1981-11-03 | Heat transmission roll and a method and an apparatus for manufacturing such a roll |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0052592B1 (en) |
| JP (1) | JPS57108595A (en) |
| AT (1) | ATE6812T1 (en) |
| CA (1) | CA1166241A (en) |
| CS (1) | CS241491B2 (en) |
| DE (1) | DE3162827D1 (en) |
| DK (1) | DK150957C (en) |
| FI (1) | FI73517C (en) |
| NO (1) | NO150775C (en) |
| SE (1) | SE444071B (en) |
| SU (1) | SU1176855A3 (en) |
| YU (1) | YU263881A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE446601B (en) * | 1983-03-29 | 1986-09-29 | Sven Melker Nilsson | DEVICE FOR MANUFACTURING A REVERSE WHEEL |
| JPS60132577U (en) * | 1984-02-09 | 1985-09-04 | 株式会社フジクラ | heat transport device |
| JPH0227928Y2 (en) * | 1987-04-24 | 1990-07-27 | ||
| DE3732598A1 (en) * | 1987-04-24 | 1988-11-03 | Wasserversorgung Abwasse | METHOD AND DE-MIXING-FREE CONCRETE FOR THE RENOVATION OF UNDERGROUND CANALS |
| JPH11320245A (en) * | 1998-05-06 | 1999-11-24 | Calsonic Corp | Molding cutting device for roll forming unit |
| SE515132C2 (en) * | 2000-06-15 | 2001-06-11 | Sven Melker Nilsson | Device for heat / moisture exchanger with turbulence generators |
| DE102006032861A1 (en) * | 2006-07-14 | 2008-01-17 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Production of openings in a metal foil and honeycomb body produced therewith for the treatment of exhaust gas |
| PL235069B1 (en) | 2017-12-04 | 2020-05-18 | Ts Group Spolka Z Ograniczona Odpowiedzialnoscia | Coil for transmission of heat for the rotary, cylindrical heat exchanger |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2131265A (en) * | 1937-03-01 | 1938-09-27 | Dow Chemical Co | Spiral heat interchanger and method of making same |
| US3007680A (en) * | 1959-07-02 | 1961-11-07 | William E Harris | Heat exchange device |
| US3290764A (en) * | 1963-03-04 | 1966-12-13 | Air Preheater | Continuously wrapped rotor |
| GB1162654A (en) * | 1967-05-24 | 1969-08-27 | Apv Co Ltd | Improvements in or relating to Plate Heat Exchangers |
| US3532157A (en) * | 1969-01-03 | 1970-10-06 | Gen Motors Corp | Regenerator disk |
| GB1252319A (en) * | 1969-06-16 | 1971-11-03 | ||
| US3901309A (en) * | 1974-05-16 | 1975-08-26 | Gen Motors Corp | Regenerator disk flexible rim |
| SE450166B (en) * | 1976-05-13 | 1987-06-09 | Munters Ab Carl | ROTATING REGENERATIVE MIXTURERS CONSISTING OF FOLDED LAYERS AND SETS AND APPARATUS FOR ITS MANUFACTURING |
| FR2416067A1 (en) * | 1978-02-03 | 1979-08-31 | Spirec Echangeur Spir Ever Cle | Coiled heat exchanger mfr. - with long sheet folded into two and double thickness wound onto cylinder with fold leading |
| SE423143B (en) * | 1978-02-16 | 1982-04-13 | Munters Ab Carl | ROTOR OR SIMILAR BODY FOR MOISTURE AND / OR HEAT EXCHANGERS AND SET FOR ITS MANUFACTURING |
-
1980
- 1980-11-14 SE SE8008011A patent/SE444071B/en not_active IP Right Cessation
-
1981
- 1981-11-03 CA CA000389326A patent/CA1166241A/en not_active Expired
- 1981-11-04 FI FI813483A patent/FI73517C/en not_active IP Right Cessation
- 1981-11-06 YU YU02638/81A patent/YU263881A/en unknown
- 1981-11-06 CS CS818193A patent/CS241491B2/en unknown
- 1981-11-09 NO NO813789A patent/NO150775C/en not_active IP Right Cessation
- 1981-11-10 JP JP56179116A patent/JPS57108595A/en active Granted
- 1981-11-11 DE DE8181850212T patent/DE3162827D1/en not_active Expired
- 1981-11-11 EP EP81850212A patent/EP0052592B1/en not_active Expired
- 1981-11-11 DK DK498081A patent/DK150957C/en not_active IP Right Cessation
- 1981-11-11 AT AT81850212T patent/ATE6812T1/en not_active IP Right Cessation
- 1981-11-13 SU SU813356650A patent/SU1176855A3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| NO150775C (en) | 1984-12-12 |
| NO150775B (en) | 1984-09-03 |
| DE3162827D1 (en) | 1984-04-26 |
| DK150957C (en) | 1988-03-28 |
| FI813483L (en) | 1982-05-15 |
| EP0052592A2 (en) | 1982-05-26 |
| DK150957B (en) | 1987-09-28 |
| FI73517B (en) | 1987-06-30 |
| EP0052592A3 (en) | 1982-11-17 |
| EP0052592B1 (en) | 1984-03-21 |
| FI73517C (en) | 1987-10-09 |
| SE444071B (en) | 1986-03-17 |
| YU263881A (en) | 1984-04-30 |
| ATE6812T1 (en) | 1984-04-15 |
| CS819381A2 (en) | 1985-07-16 |
| JPS57108595A (en) | 1982-07-06 |
| DK498081A (en) | 1982-05-15 |
| NO813789L (en) | 1982-05-18 |
| SU1176855A3 (en) | 1985-08-30 |
| SE8008011L (en) | 1982-05-15 |
| JPH026438B2 (en) | 1990-02-09 |
| CS241491B2 (en) | 1986-03-13 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |