Particle flow monitor

• US 3,993,017 A
• Filed: 02/28/1975
• Issued: 11/23/1976
• Est. Priority Date: 05/14/1970
• Status: Expired due to Term

• Current Assignee: Robert J De Brey
• Original Assignee: Robert J De Brey
• Inventors: De brey, Robert J.
• Primary Examiner(s): Goldstein, Herbert
• Application Number:
  US05/554,069
• Time in Patent Office: 634 Days
• Field of Search: 73/28, 116/112, 116/117 R, 116/137 R, 116/67 R, 181/22, 181/131, 181/132, 181/163, 15/339
• US Class Current: 116/112
• CPC Class Codes: A47L 9/19 Means for monitoring filtering operation
• CPC Class Codes: A47L 9/281 the amount or condition of incoming dirt or dust
• CPC Class Codes: A47L 9/2894 Details related to signal transmission in suction cleaners

Abstract

A particle flow monitor mounted on a housing having a passage for carrying moving fluid and particles produces audio signals that are in proportion to the amount of particles moving with the fluid. The monitor has a sensing unit having one or more enclosed chambers or cells closing an open end of the housing. A portion of the sensing unit is exposed to a flow chamber within the housing. Particles that impinge on the portion of the sensing unit produce an audio signal which provides audio information feedback as to the amount of particles moving with the fluid.

Claims

1. An apparatus for sensing particles in a flowing fluid comprising:

first means having a first passage for carrying fluid;

second means having a second passage for carrying fluid;

connecting means joining the first means with the second means, said connecting means comprising a housing having an inside wall surrounding a chamber open to the first passage and the second passage whereby fluid and particles flow through said chamber, said housing having an inlet opening in communication with the first passage, an outlet opening in communication with the second passage, and an open end opposite the inlet opening, said inside wall increasing in size from the inlet opening to the open end whereby the size of the chamber increases from the inlet opening to the open end, particle sensing means located across the open end of said chamber opposite the inlet opening for producing audio signals related to the amount of particles which hit the sensing means, said sensing means comprising a hollow ball having a first surface facing the chamber and a second surface located outside of the chamber.

2. The apparatus of claim 1 including:

means attached to the ball for mounting the ball on the housing.

3. The apparatus of claim 1 wherein:

the first surface has a convex curvature extended into the chamber, and the second surface has an outwardly convex shape.

4. The apparatus of claim 1 including:

annular means attached to and projected outwardly from said ball for mounting the ball on the housing.

5. The apparatus of claim 1 wherein:

at least one of said surfaces is formed from flexible and/or deformable material.

6. The apparatus of claim 1 wherein:

said second surface of the ball is the same size as the first surface of the ball.

7. The apparatus of claim 1 wherein:

the inside wall has a general cone shape with the large end of the cone adjacent the open end.

8. The apparatus of claim 1 wherein:

the inside wall increases in transverse diameter as a function of distance from the inlet opening.

9. An apparatus for sensing particles in a flowing fluid comprising:

housing means having a chamber, an open end at one end of the chamber, an inlet opening and an outlet opening in communication with the chamber permitting fluid and particles to flow from the inlet opening through the chamber and out the outlet opening, particle sensing means located in said open end for producing audio signals related to the amount of particles which hit the sensing means, said sensing means comprising a hollow member having a first surface facing the chamber upon which particles hit, and a second surface located outside the chamber for transmitting audio signals to the surrounding environment, said first surface having a convex curvature extended into the chamber, and a second surface having an outwardly convex shape, and means for mounting the hollow member on the housing means to close the open end of the housing means.

10. The apparatus of claim 9 wherein:

the hollow member has means to increase the surface area of its outer surface forming said second surface.

11. The apparatus of claim 9 wherein:

the first surface of the hollow member is smaller than the second surface and said hollow member has a side wall connecting the first surface wih the second surface, said side wall diverging outwardly as a function of distance from the first surface of the hollow member.

12. The apparatus of claim 9 wherein:

at least one of said surfaces is formed from flexible and/or deformable material.

13. The apparatus of claim 9 wherein:

the includes an annular member secured to the hollow member, said annular member projected outwardly from the hollow member and engageable with the housing means.

14. The apparatus of claim 9 wherein:

said second surface of the hollow member is larger than the first surface of the hollow member.

15. An apparatus for sensing particles moving with a flowing fluid, said apparatus having housing means surrounding a chamber, an open section in the housing means open to the chamber, and an inlet opening and outlet opening in communication with the chamber whereby fluid and particles can flow through the chamber, a particle sensing means for sensing particles moving with the fluid moving through the chamber, said sensing means comprising:

a hollow ball having a first surface upon which particles moving with the fluid flowing through the chamber can impinge thereby producing audio signals, and a second surface spaced from the first surface for transmitting audio signals to the surrounding environment, said first surface having a convex curvature and said second surface having a convex shape, said ball mountable on the housing means to close the open section thereof.

16. The apparatus of claim 15 wherein:

the first surface has a smaller area than the area of the second surface.

17. The apparatus of claim 16 wherein:

the ball has a side wall that diverges in an outward direction.

18. The apparatus of claim 15 including:

means attached to said ball for mounting the ball on the housing means.

19. An apparatus for sensing particles moving with a flowing fluid, said apparatus having housing means surrounding a chamber, an open section in the housing means open to the chamber, and an inlet opening and outlet opening in communication with the chamber whereby fluid and particles can flow through the chamber, said chamber generally increases in size from the inlet opening to the open end, particle sensing means for sensing particles moving with the fluid moving through the chamber, said sensing means comprising a hollow ball having a first surface upon which particles moving with the fluid flowing through the chamber can impinge thereby producing audial signals, and a second surface based from the first surface for transmitting audial signals to the surrounding environment, said ball being mountable on the housing means to close the open section thereof.

20. The apparatus of claim 19 wherein:

the housing means has an inside wall forming the chamber, said inside wall being generally cone-shaped with the large end of the cone adjacent the open end.

21. The apparatus of claim 20 wherein:

the inside wall increases in transverse diameter as a function of distance from the inlet opening.

22. The apparatus of claim 19 wherein:

the first surface of the hollow ball is smaller than the second surface, and said hollow ball has the side wall connecting the first surface with the second surface, said side wall diverging outwardly as a function of distance from the first surface of the hollow ball.

23. An apparatus for sensing particles in a flowing fluid comprising:

housing means having a chamber, an open end at one end of the chamber, an inlet opening and an outlet opening in communication with the chamber permitting fluid and particles to flow from the inlet opening through the chamber and out the outlet opening, said chamber generally increases in size from the inlet opening to the open end, particle sensing means located in said open end for producing audial signals related to the amount of particles which hit the sensing means, said sensing means comprising a hollow member having a first surface facing the chamber upon which particles hit, and a second surface located outside of the chamber for transmitting audial signals to the surrounding environment, and means for mounting the hollow member on the housing means to close the open end of the housing means.

24. The apparatus of claim 23 wherein:

the housing means has an inside wall forming the chamber, said inside wall having a general cone shape with the large end of the cone adjacent the open end.

25. The apparatus of claim 24 wherein:

the inside wall increases in transverse diameter as a function of distance from the inlet opening.

26. The apparatus of claim 23 wherein:

the first surface of the hollow member is smaller than the second surface, and said hollow member has a side wall connecting the first surface with the second surface, said side wall diverging outwardly as a function of distance from the first surface of the hollow member.