Workshop dust collection apparatus and method

• US 6,182,326 B1
• Filed: 02/10/1999
• Issued: 02/06/2001
• Est. Priority Date: 02/10/1999
• Status: Expired due to Term

• Current Assignee: Emerson Electric Company
• Original Assignee: Emerson Electric Company
• Inventors: Breakfield, Roger, Rhea, Steven
• Primary Examiner(s): Warden, Sr., Robert J.
• Assistant Examiner(s): Snider, Theresa T.
• Application Number:
  US09/247,351
• Time in Patent Office: 727 Days
• Field of Search: 153/01, 153/14, 285/7, 285/133.11, 285/179, 285/125.1, 285/129.1, 285/131.1, 134/21
• US Class Current: 15/314
• CPC Class Codes: A47L 5/38 Built-in suction cleaner installations, i.e. with fixed tube system to which, at different stations, hoses can be connected
• CPC Class Codes: B08B 15/002 using a central suction system, e.g. for collecting exhaust gases in workshops removing dust from textile machines D01H11/00; ventilation of mines, galleries or tunnels, e.g. traffic tunnels, E21F1/00
• CPC Class Codes: B23Q 11/0046 by sucking
• CPC Class Codes: B23Q 11/0057 outside the working area
• CPC Class Codes: F16L 41/023 Y- pieces F16L41/025, F16L41/026, F16L41/028 take precedence

Abstract

Apparatus for a home workshop to collect wood dust from a plurality of locations and deposit the dust in a central container. The apparatus consists of a tubing manifold, running along the wall of the workshop, with multiple connection points for tools. The manifold contains a vacuum tee fitting that allows the vacuum source to be connected in the middle of the manifold, rather than at one of the ends, without sacrificing collection efficiency. This reduces the average length of the suction path to the tools, further enhancing collection efficiency, and allows location of the vacuum source where convenient.

Claims

1. An apparatus for collecting wood dust and the like from a plurality of dust collection points, said apparatus comprising:

(a) a vacuum tee fitting comprising two inlet ports and one outlet port adapted for connection to a vacuum source, each said inlet port oriented approximately perpendicular to said outlet port, said ports arranged so as to direct the flow of air through the fitting substantially from each inlet port toward the outlet port and to impede the flow of air from one inlet port to the other inlet port; and

(b) a plurality of tube manifolds, each of said tube manifolds connected to an inlet port of said vacuum tee fitting, each said tube manifold comprising a first manifold conduit and an end inlet fitting located in proximity to a dust collection point.

2. The apparatus of claim 1 further comprising a valve connected to at least one of said end inlet fittings.

3. The apparatus of claim 1 further comprising a first vacuum conduit connecting one of said end inlet fittings to a dust collection point.

4. The apparatus of claim 1 wherein at least one of said tube manifolds further comprises:

an inlet branch fitting, which comprises a straight airflow path and a side inlet branch; and

a second manifold conduit connecting said inlet branch fitting and said end inlet fitting to form a continuous air flow path.

5. The apparatus of claim 4 wherein a second vacuum conduit connects the side inlet branch of said inlet branch fitting to said dust collection point.

6. The apparatus of claim 4 further comprising a valve connected to said inlet branch fitting.

7. The apparatus of claim 4 wherein at least one of said tube manifolds further comprises a vacuum shutoff valve interposed between the inlet port of said vacuum tee fitting and the next closest inlet branch fitting or end inlet fitting on said manifold.

8. The apparatus of claim 1 wherein the air flow path between each inlet port of the vacuum tee fitting and the outlet port is curved away from the other inlet port to impede the flow of air between the inlet ports.

9. The apparatus of claim 8 wherein the air flow path from each inlet port to the outlet port of the vacuum tee fitting describes a smooth arc.

10. The apparatus of claim 9 wherein both of said smooth arcs lie in a common plane.

11. The apparatus of claim 9 wherein said smooth arcs lie in perpendicular planes.

12. The apparatus of claim 1 wherein the flow of air between the inlet ports of the vacuum tee fitting is impeded by orienting said inlet ports approximately perpendicularly with respect to one another.

13. The apparatus of claim 1 further comprising a vacuum source.

14. The apparatus of claim 13 wherein the vacuum source comprises a wet/dry vacuum cleaner.

15. The apparatus of claim 13 wherein a shutoff valve is interposed between at least one inlet port of said vacuum tee fitting and an adjacent manifold tube.

16. An improved apparatus for collecting dust by vacuum suction from a plurality of work stations, wherein said apparatus includes a vacuum source;

a manifold of tubes joined by inlet branch fittings, each of said inlet branch fittings including an airflow path along the manifold and a side inlet branch;

a vacuum conduit connecting the vacuum source to the manifold; and

a plurality of vacuum conduits each connecting one of said side inlet branches to a dust collection point, and the improvement comprises

an air pathway connecting the vacuum source to the manifold through a vacuum tee fitting comprising two inlet ports and one outlet port, said ports arranged so as to direct the flow of air through the vacuum tee fitting substantially from both inlet ports to the outlet port and to impede the flow of air between the two inlet ports,

wherein said vacuum tee fitting is located between two tubes of said manifold such that there is air flow toward the vacuum source from both ends of the manifold.

17. A method for removing wood dust and the like from a plurality of work stations, said method comprising

affixing a tube manifold to a plurality of rigid surfaces in proximity to the work stations, said tube manifold comprising two end inlet fittings, a plurality of inlet branch fittings, each of which comprises a straight airflow path and a side inlet branch, and a plurality of vacuum conduits connecting said end inlet fittings and inlet branch fittings to form a continuous air flow path;

interposing a vacuum tee fitting into the manifold between two of the inlet branch fittings, said vacuum tee fitting comprising two inlet ports and one outlet port, and said ports arranged so as to direct the flow of air through the vacuum tee fitting substantially from both inlet ports to the outlet port and to impede the flow of air between the two inlet ports;

locating a vacuum source between two of the work stations;

connecting a source conduit from the vacuum source to the outlet port of the vacuum tee fitting;

connecting a vacuum conduit from an inlet point on the manifold to a dust collection point on each of the work stations, said inlet point comprising either an end inlet fitting or an inlet branch fitting; and

operating the vacuum source to withdraw dust from the dust collection point of at least one of said work stations and through said vacuum conduit, said inlet point, and said manifold.