Dust mitigation and surface cleaning system for maintaining a surface free from dust and other materials

• US 7,584,521 B2
• Filed: 12/21/2005
• Issued: 09/08/2009
• Est. Priority Date: 12/21/2005
• Status: Active Grant

• Current Assignee: Peraton, Inc.
• Original Assignee: ITT Manufacturing Enterprises, Inc. (ITT, Inc.)
• Inventors: Lobb, Clarence T., Kornke, William T., Armstrong, Wayne T.
• Primary Examiner(s): NGUYEN, DUNG V
• Application Number:
  US11/312,489
• Publication Number:
  US 20070136978A1
• Time in Patent Office: 1,357 Days
• Field of Search: 153/001, 153/20, 153/22, 153/401, 153/402, 153/39, 153/28, 153/161, 134/94.1, 134/95.1, 134/95.2, 134/99.1, 134/102.1, 134/102.2, 134/37
• US Class Current: 15/316.1
• CPC Class Codes: B60H 1/00414 for military, emergency, safety or security vehicles
• CPC Class Codes: B60H 1/30 Air scoops
• CPC Class Codes: B60P 3/005 for use in contaminated areas, e.g. N.B.C. intervention vehicles
• CPC Class Codes: F24F 2110/64 Airborne particle content
• CPC Class Codes: G01N 2021/151 Gas blown
• CPC Class Codes: G01N 21/15 Preventing contamination of the components of the optical system or obstruction of the light path
• CPC Class Codes: Y02B 30/70 Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

A dust mitigation and cleaning system for cleaning a surface includes a system housing secured around at least a portion of a section including the surface to be cleaned. The system housing includes a hollow member extending within the system housing toward and in general alignment with the surface to be cleaned, where an outlet of the system housing is defined by the hollow member. A duct section is secured to a portion of the system housing and includes an inlet to receive a gaseous fluid, such as air from an ambient environment in which the system is disposed, and an outlet in communication with the system housing. The system further includes a pressure generator disposed within the duct section, where operation of the fan generates a pressure differential between an interior portion of the system housing and the ambient environment such that gaseous fluid drawn into the system housing via the duct section is removed from the interior portion of the system housing via the outlet defined by the hollow member. In an exemplary embodiment, the system is disposed within a motorized vehicle to maintain a sensor window used with optical equipment clean during system operations.

Claims

1. A dust mitigation and cleaning system for cleaning a surface, the system comprising:

a system housing securable around at least a portion of a section including the surface to be cleaned, the system housing including a hollow member extending within the system housing toward and in general alignment with the surface to be cleaned, wherein an outlet of the system housing is defined by the hollow member, and the hollow member is completely separated from and does not contact the surface to be cleaned such that a gap exists between a terminal end of the hollow member and the surface to be cleaned;

a duct section secured to a portion of the system housing and including an inlet to receive a gaseous fluid from a selected environment and an outlet in communication with the system housing; and

a pressure generator disposed within the duct section;

wherein operation of the pressure generator generates a pressure differential between an interior portion of the system housing and an ambient environment in which the system is disposed such that gaseous fluid drawn into the system housing via the duct section is removed from the interior portion of the system housing via the outlet defined by the hollow member.

2. The system of claim 1, wherein the duct section is configured to receive air from the ambient environment, and the pressure generator draws air from the ambient environment through the duct section and into the interior portion of the system housing.

3. The system of claim 1, further comprising:

a filter disposed within the duct section to remove particulate material from the gaseous fluid drawn into the inlet of the duct section.

4. The system of claim 1, further comprising:

a fluid supply device to inject a fluid directly upon the surface to be cleaned.

5. The system of claim 4, wherein the fluid supply device comprises at least one spray nozzle and a reservoir to supply liquid to the at least one spray nozzle to facilitate spraying of the surface to be cleaned with the liquid.

6. The system of claim 1, wherein a distance defined by the gap between the terminal end of the hollow member and the surface is no greater than about 5 centimeters.

7. The system of claim 1, wherein the system is mountable to a motorized vehicle, the system housing is configured to be secured around at least a portion of a housing structure that contains optical sensor equipment, and the surface to be cleaned comprises a sensor window defining a wall portion of the housing structure.

8. The system of claim 7, wherein the system housing is securable to a lower surface of the motorized vehicle so as to align and define an optical path between the sensor window with the hollow member to permit an optical signal to travel between the optical sensor equipment and a ground surface upon which the motorized vehicle is supported.

9. The system of claim 7, wherein the system housing completely surrounds and contains the housing structure that contains optical sensor equipment.

10. A monitoring system comprising:

an equipment housing including optical sensor equipment and a sensor window through which an optical signal is transmitted and processed; and

a dust mitigation and cleaning system to maintain the sensor window clean, the dust mitigation and cleaning system comprising;

a system housing secured around at least a portion of the equipment housing that includes the sensor window, the system housing including a hollow member extending within the system housing toward and in general alignment with the sensor window, wherein an outlet of the system housing is defined by the hollow member, the hollow member is completely separated from and does not contact the surface to be cleaned such that a gap exists between a terminal end of the hollow member and the surface to be cleaned, and an optical path for transmitting the optical signal from the optical sensor equipment to an ambient environment surrounding the monitoring system is defined between the sensor window and the hollow member;

a duct section secured to a portion of the system housing and including an inlet to receive a gaseous fluid from a selected environment and an outlet in communication with the system housing; and

a pressure generator disposed within the duct section;

wherein operation of the pressure generator generates a pressure differential between an interior portion of the system housing and the ambient environment such that gaseous fluid drawn into the system housing via the duct section is removed from the interior portion of the system housing via the outlet defined by the hollow member.

11. The system of claim 10, wherein the duct section is configured to receive air from the ambient environment, and the pressure generator draws air from the ambient environment through the duct section and into the interior portion of the system housing.

12. The system of claim 10, wherein the optical sensor equipment transmits a laser signal to the ambient environment via the optical path.

13. The system of claim 10, further comprising:

a filter disposed within the duct section to remove particulate material from the gaseous fluid drawn into the inlet of the duct section.

14. The system of claim 10, further comprising:

a fluid supply device to inject a fluid directly upon the sensor window.

15. The system of claim 14, wherein the fluid supply device comprises at least one spray nozzle and a reservoir to supply liquid to the at least one spray nozzle to facilitate spraying of the sensor window with the liquid.

16. The system of claim 10, wherein a distance defined by the gap between the terminal end of the hollow member and the surface is no greater than about 5 centimeters.

17. The system of claim 10, further comprising:

a motorized vehicle;

wherein the system housing is secured to a lower surface of the motorized vehicle, a first portion of the equipment housing is secured within the motorized vehicle and a second portion of the equipment housing extends through the motorized vehicle and within the system housing, and the hollow member and the sensor window are aligned with the motorized vehicle such that an optical signal is transmitted through the optical path toward a ground surface upon which the motorized vehicle is supported.

18. The system of claim 10, wherein the system housing completely surrounds and contains the equipment housing.

19. A method of maintaining a surface clean with a dust mitigation and surface cleaning system, the method comprising:

providing a system housing that is secured around at least a portion of a section including the surface to be cleaned;

drawing a gasous fluid, via a pressure generator, from a selected environment and into a duct section;

facilitating a flow of the gasous fluid from the duct section into an interior portion of the system housing; and

providing a hollow member within the system housing that extends toward and is in general alignment with the surface to be cleaned, wherein the hollow member defines an outlet of the system housing that facilitates removal of gaseous fluid drawn into the system housing via the duct section from the interior portion of the system housing and to an ambient environment surrounding the system;

wherein the hollow member is completely separated from and does not contact the surface to be cleaned such that a gap exists between a terminal end of the hollow member and the surface to be cleaned and a gaseous fluid flowing within the interior portion of the system housing contacts and cleans the surface prior to removal of the gaseous fluid from the system housing.

20. The method of claim 19, wherein the pressure generator draws air from the ambient environment surrounding the system through the duct section and into the interior portion of the system housing.

21. The method of claim 19, further comprising:

filtering the gaseous in the duct section, via a filter, prior to the gaseous being provided to the system housing.

22. The method of claim 19, further comprising:

injecting a fluid from a fluid supply device directly upon the surface.

23. The method of claim 22, wherein the fluid supply device comprises at least one spray nozzle and a reservoir to supply liquid to the at least one spray nozzle, and the at least one spray nozzle sprays liquid directly upon the surface.

24. The method of claim 19, wherein a distance defined by the gap between the terminal end of the hollow member and the surface is no greater than about 5 centimeters.

25. The method of claim 19, wherein the surface to be cleaned comprises a sensor window secured to an equipment housing, the equipment housing includes sensor equipment, and at least a portion of the equipment housing is secured within the system housing, the method further comprising:

transmitting an optical signal from the sensor equipment through the sensor window and the hollow member aligned with the sensor window and to the ambient environment surrounding the system.

26. The method of claim 25, wherein the optical signal comprises a laser signal.

27. The method of claim 25, wherein the system housing and equipment housing are secured to a motorized vehicle, and the optical signal is further transmitted from the motorized vehicle to the ambient environment surrounding the motorized vehicle.

28. The method of claim of claim 27, wherein the system housing and equipment housing are aligned with respect to the motorized vehicle such that the optical signal is transmitted toward a ground surface upon which the motorized vehicle is supported.