US3716193A - Liquid distributor for feeding liquid to a rotating atomizer - Google Patents

Liquid distributor for feeding liquid to a rotating atomizer Download PDF

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Publication number
US3716193A
US3716193A US00141560A US3716193DA US3716193A US 3716193 A US3716193 A US 3716193A US 00141560 A US00141560 A US 00141560A US 3716193D A US3716193D A US 3716193DA US 3716193 A US3716193 A US 3716193A
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US
United States
Prior art keywords
wheel
liquid
atomizer
ducts
helical
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 - Lifetime
Application number
US00141560A
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English (en)
Inventor
K Masters
O Straarup
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Process Engineering AS
Original Assignee
Niro Atomizer AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Niro Atomizer AS filed Critical Niro Atomizer AS
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Publication of US3716193A publication Critical patent/US3716193A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
    • B05B3/1021—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery

Definitions

  • the distributor consists of a body mounted coaxially with the atomizer wheel, said body being provided with a number of helical ducts, the helical axis of which coincide with the axis of the atomizer wheel and terminate in an annular conduit which is coaxial with the atomizer wheel and terminates with an ejecting edge inside the wheel.
  • the helical ducts impart a rotating motion in direction of atomizer wheel rotation to the liquid which is finally flung out from the ejecting edge against the sidewall of the cup-shaped wheel.
  • LIQUID DISTRIBUTOR FOR FEEDING LIQUID TO A ROTATING ATOMIZER This invention relates to a liquid distributor for feeding liquid to a rotating atomizer wheel of the type which consists of a cup-shaped wheel, in the side wall of which a plurality of ejection apertures or ducts are provided uniformly distributed along the circumference, in addition to which the liquid distributor is adapted to impart a rotating motion to the liquid in the direction of atomizer wheel rotation.
  • the known liquid distributors which are adapted to impart a rotating motion to the liquid while this is being fed to the atomizer wheel, are employed in connection with atomizer wheels of the type shaped like a rather flat plate and from which the liquid is hurled out over the edge.
  • the purpose of imparting a rotating motion to the liquid is to obtain a uniform distribution of the liquid over the entire wheel surface so that the film of liquid along the whole circumference is, essentially, of the same thickness.
  • the distributor according to the invention is constructed in such a way that it consists of a body having a plurality of helical ducts mounted coaxially with the atomizer wheel, the helical axis of which coincide with the axis of the atomizer wheel and terminate in an. annular conduit that is coaxial with the atomizer wheel and terminates with an ejecting edge inside said wheel.
  • the splashing and spattering is obviated, which frequently occurswhen the liquid, when fed to the wheel, strikes its bottom, which can give rise to harmful deposits on the stationary parts of the atomizer.
  • FIG. 1 is a longitudinal cross-sectional view of the distributor assembly showing the relative positions of helical ducts with an atomizer wheel and a liquid distributor in one embodiment of the invention
  • FIG. 2 is a partial longitudinal sectional view of the liquid distributor part of the assembly of FIG. 1,
  • FIG. 3 is a top view of the distributor part taken along lines 3-3 of FIG. 2,
  • FIG. 4 is a longitudinal cross-sectional view of an internal part of the liquid distributor assembly used in combination with the distributor part of FIG. 2, as shown in FIG. 1,
  • FIG. 5 is a top view of the internal liquid distributor part taken along the line 5-5 of FIG. 4, and
  • FIG. 6 is a partial side view of the internal part of the liquid distributor taken along line 6-6 of FIG. 5, showing the configurations of the helical grooves formed therein.
  • FIG. 1 shows a part of an atomizer assembly 1 with an atomizer wheel 2 mounted on a shaft 3 and having ejection ducts 4.
  • the liquid or dispersion which is to be fed to the wheel 2 is supplied via a conduit 5 surrounding shaft 3 coaxially to a distributor assembly likewise surrounding the shaft having ducts 6 and consisting of an outer part 7 and an inner assembly that is divided into two parts 8 and 9.
  • the parts 7 and 8 are seen in detail in FIGS. 2-5.
  • the outer part 7 has an internal, cylindrical surface 10 along a portion of the length.
  • the axial extension of the surface 10 corresponds to the axial length of part 8, which has a corresponding external, cylindrical surface ll.
  • a plurality of helical grooves 12 have been machined, the configuration of which is seen in greater detail in FIG. 6.
  • the ducts 6 shown in FIG. 1 are produced by means of the helical grooves 12 in part 8 and the surrounding internal, cylindrical surface 10 of part 7 which extend helically in the longitudinal direction.
  • part 8 has an uninterrupted, cylindrical, external surface and if part 7 has a cylindrical, internal surface with helically extending grooves formed therein. It depends entirely upon the considerations taken with respect to production whether one or the other of these designs is chosen, which considerations will have to be taken in each individual case.
  • the helical ducts 6 terminate in a conical, annular duct 17 formed between the external surface of part 9 and the internal, conical surface 13 of part 7.
  • the wall continues with a short section 14 which, in the embodiment shown, is of quite slight conicity but extends downwardly and is directed outwardly.
  • this vertex angle will first and foremost depend on the pressure at which the liquid is supplied, in that the increasing rotational speed obtained the increasing pressure renders the ejection cone increasingly flatter. At the same time, it follows therefrom that the greater a volume is supplied per unit of time, the flatter the ejection cone becomes. However, it will not be difficult with a small wheel diameter to ensure that the film of liquid strikes the wall provided with ducts proper at as low a vertex angle of the cone as 90.
  • part 9 Since it will have to be expected that the liquid, subsequent to having left the ducts 6, is essentially present on the inner surfaces of part 7, the construction of part 9 is not of decisive importance to the distribution, but serves primarily to protect the shaft and its bearings against splashes.
  • part 9 extends further forward in front of the mouth with its bottom edge 16 than the ejecting edge 15 on part 7.
  • the inner surface 13 does not necessarily have to be conical as shown in the drawing, but may possibly be cylindrical or conical with a lower conicity. Furthermore, it is possible for the conical surface 14 to be replaced by a cylindrical surface or, possibly, with a surface forming an uninterrupted continuation of surface l3.
  • a liquid distributor for feeding liquid to a rotating atomizer wheel said wheel being cup-shaped with a central hub mounted on a vertically positioned shaft, said shaft being connected with means for rotating the wheel, a number of ejection apertures being provided in the sidewall of said cup-shaped wheel uniformly distributed along the circumference thereof, the distributor comprising a body mounted coaxially with the atomizer wheel, said body having a plurality of helical ducts the helical axis of said ducts coinciding with the axis of said atomizer wheel, and terminating in an annular conduit that is coaxial with the atomizer wheel and terminates with an ejecting edge inside said wheel.
  • a liquid distributor as claimed in claim 1, said body comprising a tubular portion surrounding said shaft of said wheel and having an internal, cylindrical surface over a section corresponding to the axial tension of said helical ducts, an annular sleeve being inserted in said portion, said sleeve being provided with an internal cylindrical surface fitting closely to said internal cylindrical surface, said helical ducts being provided in the shape of helical milled-out tracks in one of said cylindrical surfaces.
  • a liquid dlstri utor as claimed in claim 3 in which the annular conduit on the last section towards the ejecting edge has a slight opposing conicity.
  • a liquid distributor as claimed in claim 1 in which the mouth ofthe annular conduit has an internal limitation projecting further forward in direction of the outflow than the external limitation constituting said ejecting edge.

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  • Nozzles (AREA)
US00141560A 1970-05-15 1971-05-10 Liquid distributor for feeding liquid to a rotating atomizer Expired - Lifetime US3716193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK251670AA DK122144B (da) 1970-05-15 1970-05-15 Væskefordeler til tilførsel af væske til et roterende forstøverhjul.

Publications (1)

Publication Number Publication Date
US3716193A true US3716193A (en) 1973-02-13

Family

ID=8112923

Family Applications (1)

Application Number Title Priority Date Filing Date
US00141560A Expired - Lifetime US3716193A (en) 1970-05-15 1971-05-10 Liquid distributor for feeding liquid to a rotating atomizer

Country Status (14)

Country Link
US (1) US3716193A (nl)
JP (1) JPS5345522B1 (nl)
AT (1) AT317856B (nl)
BE (1) BE767191A (nl)
CA (1) CA931996A (nl)
CH (1) CH538888A (nl)
DE (1) DE2122774C3 (nl)
DK (1) DK122144B (nl)
FI (1) FI53403C (nl)
FR (1) FR2092178A5 (nl)
GB (1) GB1331708A (nl)
NL (1) NL170383C (nl)
SE (1) SE365431B (nl)
ZA (1) ZA713081B (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2456088C1 (ru) * 2011-03-15 2012-07-20 Государственное образовательное учреждение высшего профессионального образования "Кемеровский технологический институт пищевой промышленности" Заборное устройство распылителя
WO2022214171A1 (en) 2021-04-07 2022-10-13 Gea Process Engineering A/S A liquid distributor of a rotary atomizer and spray drying apparatus comprising a rotary atomizer including such a liquid distributor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920830A (en) * 1956-12-26 1960-01-12 Niro Atomizer As Atomizer for the atomization of liquid dispersions in a reaction chamber
US3034730A (en) * 1957-09-27 1962-05-15 Pilo Means for the distribution of a liquid on rotating surfaces
US3103311A (en) * 1960-09-02 1963-09-10 Foremost Dairies Inc Centrifugal atomizer and method
US3250473A (en) * 1962-12-18 1966-05-10 Hermann Hege Atomizing method and apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920830A (en) * 1956-12-26 1960-01-12 Niro Atomizer As Atomizer for the atomization of liquid dispersions in a reaction chamber
US3034730A (en) * 1957-09-27 1962-05-15 Pilo Means for the distribution of a liquid on rotating surfaces
US3103311A (en) * 1960-09-02 1963-09-10 Foremost Dairies Inc Centrifugal atomizer and method
US3250473A (en) * 1962-12-18 1966-05-10 Hermann Hege Atomizing method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2456088C1 (ru) * 2011-03-15 2012-07-20 Государственное образовательное учреждение высшего профессионального образования "Кемеровский технологический институт пищевой промышленности" Заборное устройство распылителя
WO2022214171A1 (en) 2021-04-07 2022-10-13 Gea Process Engineering A/S A liquid distributor of a rotary atomizer and spray drying apparatus comprising a rotary atomizer including such a liquid distributor

Also Published As

Publication number Publication date
FI53403C (fi) 1978-05-10
JPS5345522B1 (nl) 1978-12-07
DE2122774B2 (de) 1980-03-20
AT317856B (de) 1974-09-25
ZA713081B (en) 1972-03-29
FR2092178A5 (nl) 1971-01-21
CA931996A (en) 1973-08-14
DE2122774C3 (de) 1980-11-20
DE2122774A1 (de) 1971-11-25
BE767191A (fr) 1971-10-01
CH538888A (de) 1973-07-15
SE365431B (nl) 1974-03-25
FI53403B (nl) 1978-01-31
DK122144B (da) 1972-01-24
NL7106323A (nl) 1971-11-17
NL170383C (nl) 1985-01-16
NL170383B (nl) 1982-06-01
GB1331708A (en) 1973-09-26

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