US1977958A - Jacketed rotary blower casing - Google Patents

Jacketed rotary blower casing Download PDF

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Publication number
US1977958A
US1977958A US601913A US60191332A US1977958A US 1977958 A US1977958 A US 1977958A US 601913 A US601913 A US 601913A US 60191332 A US60191332 A US 60191332A US 1977958 A US1977958 A US 1977958A
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United States
Prior art keywords
casing
jackets
blower
flanges
compressor
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Expired - Lifetime
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US601913A
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Willem Van Rijswijk
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BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
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BBC Brown Boveri France SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps

Definitions

  • Another object of the invention is to ⁇ provide a rotary blower or compressor structure in which a removable jacket is so associated ⁇ with ⁇ each portion of the casing of such ⁇ blower or compressor to form a chamberfor the circulation of va cooling medium therethrough as to permit removal ofi the jacket without disturbance of the operation of the machine.
  • Another object ⁇ of the invention is to provide a rotary blower or compressor structure in which a removable jacket-isso associated with each portion of the casing of such blower or compressor to form a chamber for the circulation of a cooling medium then-throughA as to permit opening of the casing without disturbing the arrangement of the jacket associated with each portion thereof.
  • Another vobject of the invention is to provide a rotary ⁇ blower or compressor structure in which a removable jacket of relatively thin sheet metal is arranged on each casing portion of the blower or compressor to form a chamber for the circula- 7G tion of a coolingmedium therethrough and is supported and spaced therefrom by ribs on the casing.
  • Fig. l is a partial longitudinal sectional View, taken ona central plane, through the upper portion of a rotary blower or compressor embodying the present invention.
  • Fig. 2 is an endv elevation, shown partly in section, of a rotary blower or compressor provided with chambers for the circulation of a cooling medium ⁇ therethrough about each portion of the blower or compressor structure.
  • the reference numeral 6 designates the upper and the reference numeral 7 designates the lower half of. a casing for a rotary blower or compressor, the casing halves being capable of attachment to each other by joining the fianges 8 and 9 thereof respectively by means of bolts passing through such flanges or by other suitable means now known.
  • the casing is substantially cylindrical and has a deeply corrugated surface.
  • the casing is provided with ribs 11 extending valong the casing, which ribs aid in ⁇ transmittingthe heat7 produced in the compressor, outwardly to a cooling medium as will be described hereinafter..
  • the casing halves 6 and 7 are each provided with a second flange l2 and 13 respectively extending outwardly about the entire casing ⁇ structure substantially at right angles to the outersuriace thereof.
  • the flanges 12 and 13 ⁇ are arranged a sufficient distance from 105 flanges 8 and 9.
  • Each of the flanges 12 and l3 has a groove 14 formed therein and is provided with a plurality of eyes, on each of the longitudij nal side of such flanges, as at 16 and 17.
  • a shaft21 is mounted for rotation within the 110 casing 6, 7 and has mounted thereon a plurality of impeller wheels 22, here shown as being of the central inlet peripheral discharge type, arranged to act on a iiuid in series.
  • the wheels are separated from each other by walls 24, 25, 26 and 27, forming, with the depressed sections of the compressor casing portion from which the corrugated surface of the casing results, passage ways from the discharge of one wheel to the inlet of the following wheel.
  • the fluid to be operated upon by the blower is drawn into the first wheel through an inlet conduit 31 and passes through the wheels in succession to the last of such wheels from which it is discharged through a discharge conduit 32.
  • Each of the halves of the blower casing is provided with a sheet metal cover 33 or 34 preferably made of relatively thin copper or other metal having a high heat conductivity, which covers form jackets cooperating with the casing portions to form chambers for the circulation of a cooling medium therethrough about each of the casing portions.
  • the edges of the jackets are sealed into the grooves 14 in the flanges 12 and 13 in any suitable manner but preferably by means of a material which will permit removal and replacement of the jackets without damage to either the casing or the jackets and which will prevent leakages of the cooling medium through the joint between the casing portions and the jackets.
  • the jackets When arranged on the halves of the casing, the jackets are retained in their positions by means of rods 36 and 37 attached at the ends thereof to the eyes 16 and 17 and provided with turn buckles 38 and 39 or other suitable devices to permit proper tensioning of the rods.
  • the jackets When the rods are tensioned, the jackets are drawn into contact with the edges of the ribs 11 and into the grooves 14 thus securing a firm and continuous support for lthe jackets as well as tight sealing into the grooves.
  • Each of the jackets 33 and 34 is preferably provided with a number of apertures covered by plates as at 41, 42 and 43, which permit access to the cooling chamber formed by the casing portion and the jacket for purposes of inspection or partial cleaning of such chambers.
  • the relatively light jackets 33 and 34 may be readily removed and replaced without disturbing the operation of the machine. Sealing the edges of the jackets against the flanges 12 and 13 permits removal of the bolts (not shown) connecting the flanges 8 and 9 of the casing portions 6 and 7 without disturbing the jackets, and the upper half 6 of the casing may be removed without disturbing the arrangement of the jacket 33 thereon.
  • a cooling medium such as water is supplied to each of the chambers at the lower portion thereof and is discharged therefrom at the upper portion thereof.
  • the cooling water lls the entire spaces between the several portions of the casing and the jackets. Water is thus brought into contact with the walls defining the passage ways between the several wheels and abstracts heat from such walls. Due to the provision of ribs, the amount of heat transferred from the compressor fluid in the blower or compressor is increased and the water flows through a tortuous path from the inlet to the outlet thereof thus increasing the amount of cooling obtained therefrom.
  • a cooling structure for a blower or compressor according to the present invention has the advantage of cheapness and ease in construction.
  • the jacket may be readily removed and replaced to permit complete access to the exterior of the casing in the shortest possible time, which is particularly advantageous when the cooling water is very impure, or the machine can be operated without cooling for only a short time.
  • the upper casing portion may be removed for inspection or repair of the internal portions of the machine in the shortest possible time without disturbing the attachment oI" the cooling jacket thereto.
  • Substantial cooling between the stages of the compressor is obtained without the provision of special double walls arranged between the stages for the purpose of permitting the circulation of a cooling medium therethrough, thus avoiding the complicated connections of tubing to secure the desired results heretofore considered necessary.
  • a rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having anges extending outwardly therefrom adjacent to the first mentioned flanges thereof, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing, the edges of said jackets engaging the last mentioned flanges on said casing, and means for retaining the edges of said jackets in sealing contact with the last mentioned flanges on said casing.
  • a rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having flanges extending outwardly therefrom adjacent the first mentioned ilanges thereof, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing, the edges of said jackets engaging the last mentioned flanges on said casing, means for retaining the edges of said jackets in sealing contact with the last mentioned anges on said casing, tension members arranged about and retaining said jackets in Huid-tight relation with the portions of said casing, and means associated with said members to adjust the tension thereof.
  • a rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having iianges extending outwardly therefrom adjacent the first mentioned flanges thereof, ribs formed to extend outwardly from the portions of said casing between the last mentioned iianges thereof, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing in contact with said ribs, and means for retaining the edges of said jackets in sealing contact with the last mentioned flanges on said casing and in contact with said ribs extending therefrom.
  • a rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having flanges extending outwardly there. from adjacent the rst mentioned flanges thereof on opposite sides thereof and spaced therefrom, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing, the edges of said jackets engaging the last mentioned ilanges on said casing, tension members arranged about and retaining said jackets in iluid-tight relation with the portions of said casing, and means associated with said members to adjust the tension thereof.
  • a rotary blower comprising a casing divided into an upper portion and a lower portion, a shaft extending through said casing and mounted for rotation therein, said casing portions having ribs formed thereon in the direction of the axis of said shaft, and a removable sheet metal jacket arranged on each of the portions of said casing to cooperate therewith in forming a chamber for the circulation of a cooling medium therethrough, said jackets being retained in contact with the ribs of said casing.
  • a rotary blower comprising a casing divided into an upper portion and a lower portion, a shaft extending through said casing and mounted for yrotation therein, said casing portions having ribs formed thereon in the direction of the axis of said shaft, and a removable sheet metal jacket arranged on each of the portions of said casing to cooperate therewith in forming a chamber for the circulation of a cooling medium therethrough, said jackets extending axially beyond the ends of the ribs of said casing and being retained in contact therewith to aid horizontal flow of the cooling medium in series through the channels formed in the circulating chamber by the ribs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Oct. 23, 1934. w. VAN RIJSWIJK JACKETED ROTARY BLOWER CASING Filed March 30, 1952 afentecl ct 23, 119334 PATENT oElcE JACKETED ROTARY BLOWER CASING Willem van Rijswijk, Baden, Switzerland, as-
signor to Aktiengesellschaft Brown Boveri & Cie., Baden, Switzerland, a joint-stock company of Switzerland Application March so, 1932, serial No. 601,913 In Germany March 30, 1931 v6 claims. `(o1. 23o-133) atedtwith the casing of the blower or compressor to form a cooling chamber integral with the blower or compressor structure. Such constructions,ihowever, have the disadvantage that the cooling medium chamber was almost inaccessible i5 for'cleaning purposes and that it was impossible to inspect the outer surface of the casing forming one wall of such cooling chamber.l The provision of a large number of covered apertures through the jacket for cleaning and inspection purposes 26 was not sufficient to provide for access to the cooling chamber with sufficient freedom to permit thorough cleaning and inspection thereof, and removal and replacement of such covers required a great deal of time. Removal of the upper portions of the blower or compressor casing for inspection or repair of the internal portions of such blower or compressor required the removing of the bolts connecting the flanges of the casing as wellas the `bolts connecting the flanges ofthe jacket, and frequently resulted in damage to or leakage from the cooling chamber formed by such jacket and casing, particularly when the jacket was not made integral with the casing structure. Even though no damage was done'to the cooling chamber during such removal, a great length of time was required for the operation because of the large number of bolts which had to be removed and replaced. Such length of time is particularly diicult to obtain in installations where the com'- presser must remain substantially constantlyin service. K 1 y It is, therefore, among the objects of the present invention to'provide a rotary'blower or comr pressor structure in which a removable jacketis associated with each portion of the casing of the blower or compressor to form chambers there# with for the circulation of a cooling medium therethrough. g i
Another object of the invention is to` provide a rotary blower or compressor structure in which a removable jacket is so associated `with `each portion of the casing of such `blower or compressor to form a chamberfor the circulation of va cooling medium therethrough as to permit removal ofi the jacket without disturbance of the operation of the machine.
Another object `of the invention is to provide a rotary blower or compressor structure in which a removable jacket-isso associated with each portion of the casing of such blower or compressor to form a chamber for the circulation of a cooling medium then-throughA as to permit opening of the casing without disturbing the arrangement of the jacket associated with each portion thereof.
Another vobject of the invention is to provide a rotary `blower or compressor structure in which a removable jacket of relatively thin sheet metal is arranged on each casing portion of the blower or compressor to form a chamber for the circula- 7G tion of a coolingmedium therethrough and is supported and spaced therefrom by ribs on the casing.
Objects and advantages other than those above set forth will be apparent from the following description when read in connection with the accompanying drawing in which:
Fig. l is a partial longitudinal sectional View, taken ona central plane, through the upper portion of a rotary blower or compressor embodying the present invention; and
Fig. 2 is an endv elevation, shown partly in section, of a rotary blower or compressor provided with chambers for the circulation of a cooling medium` therethrough about each portion of the blower or compressor structure.
Referring more particularly to the drawing by characters of reference, the reference numeral 6 designates the upper and the reference numeral 7 designates the lower half of. a casing for a rotary blower or compressor, the casing halves being capable of attachment to each other by joining the fianges 8 and 9 thereof respectively by means of bolts passing through such flanges or by other suitable means now known. The casing is substantially cylindrical and has a deeply corrugated surface. The casing is provided with ribs 11 extending valong the casing, which ribs aid in` transmittingthe heat7 produced in the compressor, outwardly to a cooling medium as will be described hereinafter.. The casing halves 6 and 7 are each provided with a second flange l2 and 13 respectively extending outwardly about the entire casing `structure substantially at right angles to the outersuriace thereof. The flanges 12 and 13` are arranged a sufficient distance from 105 flanges 8 and 9. Each of the flanges 12 and l3has a groove 14 formed therein and is provided with a plurality of eyes, on each of the longitudij nal side of such flanges, as at 16 and 17.
A shaft21is mounted for rotation Within the 110 casing 6, 7 and has mounted thereon a plurality of impeller wheels 22, here shown as being of the central inlet peripheral discharge type, arranged to act on a iiuid in series. The wheels are separated from each other by walls 24, 25, 26 and 27, forming, with the depressed sections of the compressor casing portion from which the corrugated surface of the casing results, passage ways from the discharge of one wheel to the inlet of the following wheel. The fluid to be operated upon by the blower is drawn into the first wheel through an inlet conduit 31 and passes through the wheels in succession to the last of such wheels from which it is discharged through a discharge conduit 32.
Each of the halves of the blower casing is provided with a sheet metal cover 33 or 34 preferably made of relatively thin copper or other metal having a high heat conductivity, which covers form jackets cooperating with the casing portions to form chambers for the circulation of a cooling medium therethrough about each of the casing portions. The edges of the jackets are sealed into the grooves 14 in the flanges 12 and 13 in any suitable manner but preferably by means of a material which will permit removal and replacement of the jackets without damage to either the casing or the jackets and which will prevent leakages of the cooling medium through the joint between the casing portions and the jackets. When arranged on the halves of the casing, the jackets are retained in their positions by means of rods 36 and 37 attached at the ends thereof to the eyes 16 and 17 and provided with turn buckles 38 and 39 or other suitable devices to permit proper tensioning of the rods. When the rods are tensioned, the jackets are drawn into contact with the edges of the ribs 11 and into the grooves 14 thus securing a firm and continuous support for lthe jackets as well as tight sealing into the grooves. Each of the jackets 33 and 34 is preferably provided with a number of apertures covered by plates as at 41, 42 and 43, which permit access to the cooling chamber formed by the casing portion and the jacket for purposes of inspection or partial cleaning of such chambers. When it is desired to clean the cooling chamber thoroughly or to obtain access to the exterior of the casing for any other purpose, the relatively light jackets 33 and 34 may be readily removed and replaced without disturbing the operation of the machine. Sealing the edges of the jackets against the flanges 12 and 13 permits removal of the bolts (not shown) connecting the flanges 8 and 9 of the casing portions 6 and 7 without disturbing the jackets, and the upper half 6 of the casing may be removed without disturbing the arrangement of the jacket 33 thereon.
A cooling medium such as water is supplied to each of the chambers at the lower portion thereof and is discharged therefrom at the upper portion thereof. The cooling water lls the entire spaces between the several portions of the casing and the jackets. Water is thus brought into contact with the walls defining the passage ways between the several wheels and abstracts heat from such walls. Due to the provision of ribs, the amount of heat transferred from the compressor fluid in the blower or compressor is increased and the water flows through a tortuous path from the inlet to the outlet thereof thus increasing the amount of cooling obtained therefrom.
A cooling structure for a blower or compressor according to the present invention has the advantage of cheapness and ease in construction. The jacket may be readily removed and replaced to permit complete access to the exterior of the casing in the shortest possible time, which is particularly advantageous when the cooling water is very impure, or the machine can be operated without cooling for only a short time. The upper casing portion may be removed for inspection or repair of the internal portions of the machine in the shortest possible time without disturbing the attachment oI" the cooling jacket thereto. Substantial cooling between the stages of the compressor is obtained without the provision of special double walls arranged between the stages for the purpose of permitting the circulation of a cooling medium therethrough, thus avoiding the complicated connections of tubing to secure the desired results heretofore considered necessary.
Although but one embodiment of the present invention has been illustrated and described it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.
It is claimed and desired to secure by Letters Patent:
1. A rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having anges extending outwardly therefrom adjacent to the first mentioned flanges thereof, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing, the edges of said jackets engaging the last mentioned flanges on said casing, and means for retaining the edges of said jackets in sealing contact with the last mentioned flanges on said casing.
2. A rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having flanges extending outwardly therefrom adjacent the first mentioned ilanges thereof, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing, the edges of said jackets engaging the last mentioned flanges on said casing, means for retaining the edges of said jackets in sealing contact with the last mentioned anges on said casing, tension members arranged about and retaining said jackets in Huid-tight relation with the portions of said casing, and means associated with said members to adjust the tension thereof.
3. A rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having iianges extending outwardly therefrom adjacent the first mentioned flanges thereof, ribs formed to extend outwardly from the portions of said casing between the last mentioned iianges thereof, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing in contact with said ribs, and means for retaining the edges of said jackets in sealing contact with the last mentioned flanges on said casing and in contact with said ribs extending therefrom.
nerr/,95e
4. A rotary blower comprising a casing divided into an upper portion and a lower portion, each portion having flanges for joining the same, said casing having flanges extending outwardly there. from adjacent the rst mentioned flanges thereof on opposite sides thereof and spaced therefrom, a shaft extending through said casing, a plurality of impeller wheels mounted on said shaft, a completely removable sheet metal jacket arranged on each portion of said casing, the edges of said jackets engaging the last mentioned ilanges on said casing, tension members arranged about and retaining said jackets in iluid-tight relation with the portions of said casing, and means associated with said members to adjust the tension thereof.
5. A rotary blower comprising a casing divided into an upper portion and a lower portion, a shaft extending through said casing and mounted for rotation therein, said casing portions having ribs formed thereon in the direction of the axis of said shaft, and a removable sheet metal jacket arranged on each of the portions of said casing to cooperate therewith in forming a chamber for the circulation of a cooling medium therethrough, said jackets being retained in contact with the ribs of said casing.
6. A rotary blower comprising a casing divided into an upper portion and a lower portion, a shaft extending through said casing and mounted for yrotation therein, said casing portions having ribs formed thereon in the direction of the axis of said shaft, and a removable sheet metal jacket arranged on each of the portions of said casing to cooperate therewith in forming a chamber for the circulation of a cooling medium therethrough, said jackets extending axially beyond the ends of the ribs of said casing and being retained in contact therewith to aid horizontal flow of the cooling medium in series through the channels formed in the circulating chamber by the ribs.
WILLEM VAN RIJSWIJK.
US601913A 1931-03-30 1932-03-30 Jacketed rotary blower casing Expired - Lifetime US1977958A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002406A1 (en) * 1984-10-10 1986-04-24 Paul Marius A Gas turbine engine
US5003766A (en) * 1984-10-10 1991-04-02 Paul Marius A Gas turbine engine
US20090191083A1 (en) * 2008-01-28 2009-07-30 Paul Xiubao Huang Rotary blower with isothermal air jacket
US20150107249A1 (en) * 2013-10-22 2015-04-23 Access Energy Llc Extracting Heat From A Compressor System
US9540961B2 (en) 2013-04-25 2017-01-10 Access Energy Llc Heat sources for thermal cycles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986002406A1 (en) * 1984-10-10 1986-04-24 Paul Marius A Gas turbine engine
US5003766A (en) * 1984-10-10 1991-04-02 Paul Marius A Gas turbine engine
US20090191083A1 (en) * 2008-01-28 2009-07-30 Paul Xiubao Huang Rotary blower with isothermal air jacket
US9540961B2 (en) 2013-04-25 2017-01-10 Access Energy Llc Heat sources for thermal cycles
US20150107249A1 (en) * 2013-10-22 2015-04-23 Access Energy Llc Extracting Heat From A Compressor System

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