US2049940A - Device for electrostatically charging materials - Google Patents

Device for electrostatically charging materials Download PDF

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Publication number
US2049940A
US2049940A US735648A US73564834A US2049940A US 2049940 A US2049940 A US 2049940A US 735648 A US735648 A US 735648A US 73564834 A US73564834 A US 73564834A US 2049940 A US2049940 A US 2049940A
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Prior art keywords
charging
electrostatically charging
charging materials
electrostatically
apertures
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US735648A
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Barthel Hans
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/26—Electric field

Definitions

  • This invention relates to improvements in devices for effecting electrostatic charging of liquid, dust, gaseous and like materials in a fluid state.
  • the invention has for its object to provide a device of this character wherein a charging body in the form of a globe or similar rounded shape is employed for improving the electrostatic charging qualities thereof.
  • Figure 1 is a vertical central sectional view through the charging device.
  • FIG. 15 Fig. 2 is a fragmentary side elevation thereof.
  • a indicates a charging member in the form of a hollow globe, egg or like rounded shape.
  • the interior of the body is divided into two separate chamgo bers b and c by a partition a.
  • Compressed air or gas under pressure is introduced into the lower chamber of the charging body by means of a pipe d and escapes through narrow slots e provided in the wall of said body,
  • each slot e being arranged in approximately the central horizontal plane of the charging body, are distributed at uniform distances apart over the circumference thereof.
  • a small aperture h above each slot e communicates with the upper 80 chamber 17, the bottom of which is suitably inclined and the central portion thereof raised.
  • the material to be charged is introduced into this upper chamber 1) through the external pipe 1'. leaves the chamber through said small aper- 86 ture h and is caught and broken up by the currents forced under pressure from the slots in the lower chamber 0 into small particles.
  • 40 upper chamber may also be put under a suitable pressure but in the case of heavier fluids, the natural tendency to fall from the reservoir will answer the purpose.
  • the charging body a is connected by a conductor min known manner with a source of uni- 5 polar electricity whereby the material discharged from the openings in the body as well as that moving toward and touching said body receives an electrostatic charge.
  • a device for electrostatically charging moving fluid material comprising a charging body having an external charging surface of substantially globular shape, said charging body being of hollow form and divided internally into two chambers, means for conducting fluid material to be charged to one of said chambers, and means for conducting a distributing fluid to the other chamber, said body having apertures therein communicating with the respective chambers.
  • a device for electrostatically charging moving fluid material comprising a charging body having an external charging surface of substantially globular shape, said charging body being of hollow form and provided with apertures, means for conducting distributing air to said hollow body and the apertures therein, said body having additional apertures arranged immediately adjacent the first mentioned apertures, and means for conducting material in a fluid state to the second mentioned apertures.
  • a device for breaking up liquid and finely divided solid substances and for electrostatically charging said substances comprising a hollow 3 substantially ball shaped charging body maintained under unipolar electric charge, said body having openings therein for the passage of said substances, and means for conducting an atomizing medium to said body for engaging the substances passing through said openings.

Description

3 H. BLRTHEL 2,049,940
DEVICE FOR ELECTROSTATICALLY CHARGING MATERIALS Filed July 17, 1934 Nve/v Ta R Patented Aug. 4, 1936 UNITED STATES PATENT OFFICE DEVICE FOR ELECTROSTATICALLY CHARGING MATERIALS Hans Barthel, Cologne-Ricki, Germany, assignor of one-half to Heinrich Huebner, Cologne- Dellbruck, Germany 3 Claims.
This invention relates to improvements in devices for effecting electrostatic charging of liquid, dust, gaseous and like materials in a fluid state.
5 a The invention has for its object to provide a device of this character wherein a charging body in the form of a globe or similar rounded shape is employed for improving the electrostatic charging qualities thereof.
10 In the accompanying drawing wherein an approved embodiment of the invention is illustrated:
Figure 1 is a vertical central sectional view through the charging device.
15 Fig. 2 is a fragmentary side elevation thereof.
Referring to the drawing in detail, a indicates a charging member in the form of a hollow globe, egg or like rounded shape. The interior of the body is divided into two separate chamgo bers b and c by a partition a.
Compressed air or gas under pressure is introduced into the lower chamber of the charging body by means of a pipe d and escapes through narrow slots e provided in the wall of said body,
25 the slots e, being arranged in approximately the central horizontal plane of the charging body, are distributed at uniform distances apart over the circumference thereof. A small aperture h above each slot e communicates with the upper 80 chamber 17, the bottom of which is suitably inclined and the central portion thereof raised.
The material to be charged is introduced into this upper chamber 1) through the external pipe 1'. leaves the chamber through said small aper- 86 ture h and is caught and broken up by the currents forced under pressure from the slots in the lower chamber 0 into small particles.
To facilitate the discharge of liquid, powdery or gaseous matter through the aperture h, the
40 upper chamber may also be put under a suitable pressure but in the case of heavier fluids, the natural tendency to fall from the reservoir will answer the purpose.
In each case, the matter is entrained and blown away by the forced currents of air from the lower chamber and thus partially pulverized.
The charging body a is connected by a conductor min known manner with a source of uni- 5 polar electricity whereby the material discharged from the openings in the body as well as that moving toward and touching said body receives an electrostatic charge.
What I claim is:
1. A device for electrostatically charging moving fluid material comprising a charging body having an external charging surface of substantially globular shape, said charging body being of hollow form and divided internally into two chambers, means for conducting fluid material to be charged to one of said chambers, and means for conducting a distributing fluid to the other chamber, said body having apertures therein communicating with the respective chambers.
2. A device for electrostatically charging moving fluid material comprising a charging body having an external charging surface of substantially globular shape, said charging body being of hollow form and provided with apertures, means for conducting distributing air to said hollow body and the apertures therein, said body having additional apertures arranged immediately adjacent the first mentioned apertures, and means for conducting material in a fluid state to the second mentioned apertures.
3. A device for breaking up liquid and finely divided solid substances and for electrostatically charging said substances comprising a hollow 3 substantially ball shaped charging body maintained under unipolar electric charge, said body having openings therein for the passage of said substances, and means for conducting an atomizing medium to said body for engaging the substances passing through said openings.
HANS BAR'I'HEL.
US735648A 1933-07-17 1934-07-17 Device for electrostatically charging materials Expired - Lifetime US2049940A (en)

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DE2049940X 1933-07-17

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718477A (en) * 1950-03-20 1955-09-20 Ransburg Electro Coating Corp Method and apparatus for electrostatic atomization
US2764712A (en) * 1951-05-31 1956-09-25 Ransburg Electro Coating Corp Apparatus for electrostatically atomizing liquid
US2769621A (en) * 1951-10-30 1956-11-06 Theodore H Nakken Device for charging lubricants
US2808343A (en) * 1952-03-05 1957-10-01 Ransburg Electro Coating Corp Method and apparatus for spray coating of articles
US2842456A (en) * 1955-08-30 1958-07-08 Battelle Development Corp Process for developing an electrostatic image
US2893893A (en) * 1950-01-31 1959-07-07 Ransburg Electro Coating Corp Method and apparatus for electrostatic coating
US2957077A (en) * 1955-06-15 1960-10-18 American Can Co Method and apparatus for producing coated thermoplastic containers
US3017114A (en) * 1958-08-26 1962-01-16 Gen Motors Corp Electrostatic paint spray
US3016876A (en) * 1958-10-27 1962-01-16 Interplanetary Res & Dev Corp Apparatus for electrostatically spray coating articles
US3057558A (en) * 1958-02-19 1962-10-09 Schweitzer Electrostatic Compa Electrostatic atomizing head
US3059613A (en) * 1958-08-25 1962-10-23 Nakaya Eizo Electrostatic coating device
US3294704A (en) * 1962-08-02 1966-12-27 Iit Res Inst Apparatus for electrostatic encapsulation
US3822825A (en) * 1973-08-08 1974-07-09 H Dupre Snow making apparatus and system
US3951344A (en) * 1973-12-14 1976-04-20 Houdaille Industries, Inc. Radial jet aerator module
US7290722B1 (en) 2003-12-16 2007-11-06 Snow Machines, Inc. Method and apparatus for making snow

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893893A (en) * 1950-01-31 1959-07-07 Ransburg Electro Coating Corp Method and apparatus for electrostatic coating
US2718477A (en) * 1950-03-20 1955-09-20 Ransburg Electro Coating Corp Method and apparatus for electrostatic atomization
US2764712A (en) * 1951-05-31 1956-09-25 Ransburg Electro Coating Corp Apparatus for electrostatically atomizing liquid
US2769621A (en) * 1951-10-30 1956-11-06 Theodore H Nakken Device for charging lubricants
US2808343A (en) * 1952-03-05 1957-10-01 Ransburg Electro Coating Corp Method and apparatus for spray coating of articles
US2957077A (en) * 1955-06-15 1960-10-18 American Can Co Method and apparatus for producing coated thermoplastic containers
US2842456A (en) * 1955-08-30 1958-07-08 Battelle Development Corp Process for developing an electrostatic image
US3057558A (en) * 1958-02-19 1962-10-09 Schweitzer Electrostatic Compa Electrostatic atomizing head
US3059613A (en) * 1958-08-25 1962-10-23 Nakaya Eizo Electrostatic coating device
US3017114A (en) * 1958-08-26 1962-01-16 Gen Motors Corp Electrostatic paint spray
US3016876A (en) * 1958-10-27 1962-01-16 Interplanetary Res & Dev Corp Apparatus for electrostatically spray coating articles
US3294704A (en) * 1962-08-02 1966-12-27 Iit Res Inst Apparatus for electrostatic encapsulation
US3822825A (en) * 1973-08-08 1974-07-09 H Dupre Snow making apparatus and system
US3951344A (en) * 1973-12-14 1976-04-20 Houdaille Industries, Inc. Radial jet aerator module
US7290722B1 (en) 2003-12-16 2007-11-06 Snow Machines, Inc. Method and apparatus for making snow

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