Device for purifying gas by extracting particles

• US 8,951,320 B2
• Filed: 03/02/2012
• Issued: 02/10/2015
• Est. Priority Date: 03/02/2011
• Status: Expired due to Fees

• Current Assignee: Alfyma Industrie
• Original Assignee: Alfyma Industrie
• Inventors: Galdkov, Serguei
• Primary Examiner(s): Bui, Dung H
• Application Number:
  US13/823,468
• Publication Number:
  US 20130186047A1
• Time in Patent Office: 1,075 Days
• Field of Search: 554/28, 554/29, 554/30, 554/32, 553/42, 553/43, 55345-349, 552/82, 552/97
• US Class Current: 55/297
• CPC Class Codes: B04C 5/185 Dust collectors

Abstract

A purifying device provided with a device for collecting particles, such as dust includes a chamber having an inner wall that is generally cylindrical around a central axis (X), the inner wall extending parallel to the central axis between first and second substantially parallel faces, wherein the chamber has an inlet opening and an outlet opening. The collecting device also includes a rotor which is rotatable around the central axis, and which includes at least three blades, each of which extend radially from a rotary shaft to the inner wall while defining, within the chamber, compartments which are sized such that the inlet and outlet openings are in constant communication with separate compartments. The inlet opening is provided in the first base and the outlet opening is provided in the second base.

Claims

1. A collecting device for collecting particles, including dust, designed to equip a device for purifying a gas by extracting particles, including:

a chamber, including an inner wall that is generally cylindrical around a central axis, said inner wall extending parallel to the central axis between first and second substantially parallel bases, the chamber having an inlet opening and an outlet opening, and

a rotor which is rotatable around the central axis, and which includes at least three blades, each of which extends radially from a rotary shaft to the inner wall while defining, within the chamber, compartments which are sized such that the inlet and outlet openings are in constant communication with separate compartments,

wherein the inlet opening is formed in the first base, and the outlet opening is formed in the second base, and

wherein the first base is provided, at the end of the chamber, with a driving device for driving particles toward the inlet opening, said driving device including blades for scraping an outer face of the first base, rotating around an axis, each extending from a rotating shaft.

2. The collecting device according to claim 1, wherein each inlet and outlet opening has dimensions, including a diameter, smaller than half of a diameter of the chamber.

3. A purifying device for purifying a gas, including air, by extracting particles, including dust, including a collecting device, and at least one separating device for separating particles and gas, wherein:

the collecting device includes;

a chamber, including an inner wall that is generally cylindrical around a central axis, said inner wall extending parallel to the central axis between first and second substantially parallel bases, the chamber having an inlet opening and an outlet opening, wherein the inlet opening is formed in the first base, and the outlet opening is formed in the second base and wherein the first base is provided, at the end of the chamber, with a driving device for driving particles toward the inlet opening, said driving device including blades for scraping an outer face of the first base, rotating around an axis, each extending from a rotating shaft, and

a rotor which is rotatable around the central axis, and which includes at least three blades, each of which extends radially from the rotary shaft to the inner wall while defining, within the chamber, compartments which are sized such that the inlet and outlet openings are in constant communication with separate compartments, and

each separating device includes;

an inlet duct for gas charged with particles, a cleaned gas outlet duct, and an outlet duct for the particles arranged upstream from the inlet opening of the collecting device.

4. The purifying device according to claim 3, wherein each separating device includes an air circulation enclosure, which is generally cylindrical, in which the gas inlet and outlet ducts emerge, and extending up to the first base of the collecting device, each separating device also comprising a guide member with a generally conical tapered shape, arranged substantially coaxially to the cylindrical enclosure, and the large cross-section of which has a diameter smaller than that of the cylindrical enclosure and is arranged across from the first base of the collecting device.

5. The purifying device according to claim 4, wherein each separating device includes means for translating the guide member along an axis and/or a vibrating device for causing that guide member to vibrate.

6. The purifying device according to claim 3, wherein each separating device includes an air circulation enclosure, which is generally substantially cylindrical, in which the gas inlet and outlet ducts emerge, and extending up to the first base of the collecting device, the purifying device comprising a blower nozzle arranged between the air circulation enclosure and the first base of the collecting device, oriented toward the air circulation enclosure.

7. The purifying device according to claim 6, wherein the nozzle includes a member for orienting the blown gas.

8. The purifying device according to claim 3, wherein the cylindrical enclosure has a diameter substantially equal to that of the first base.

9. A purifying device according to claim 3, including at least two separate devices, housed in a cylindrical support element, arranged in parallel, and positioned in a circle with a diameter smaller than that of the first base, the outlet duct for the particles of each separating device being arranged across from said first base.

10. The purifying device according to claim 9, including a general gas supply duct, connected to the inlet duct of each separating device by means of a supply enclosure, and a general gas discharge duct, connected to the outlet duct of each separating device by means of a discharge enclosure.

11. The purifying device according to claim 10, wherein one among the general supply duct and the general gas discharge duct extends substantially tangentially to the cylindrical support element, and the other among the general supply duct and the general gas discharge duct extends substantially coaxially or tangentially to the cylindrical support element.

12. The purifying device according to claim 3, including a plurality of separating devices arranged in parallel, and positioned in a spiral with a diameter smaller than that of the first base, the outlet duct for the particles of each separating device being arranged across from said first base.

13. A purifying device according to claim 12, including a central separating device whereof the diameter is larger than that of the other separating devices, arranged at the center of spiral.

14. The purifying device according to claim 3, wherein each separating device includes an air circulation enclosure, comprising:

a first substantially cylindrical portion, in which the gas inlet and outlet ducts emerge,

a second substantially tapered portion, extending while becoming narrower from a large cross-section connected to the first part to a small cross-section arranged across from the first base of the collecting device, and

a third substantially tapered portion, extending while becoming wider from a small cross-section connected to the small cross-section of the second tapered portion, up to a large cross-section arranged across from the first base of the collecting device.

15. The purifying device according to claim 14, wherein the large cross-section of the third tapered portion has a diameter substantially equal to that of the first base of the collecting device.