Sensor shield

• US 9,151,678 B2
• Filed: 04/23/2013
• Issued: 10/06/2015
• Est. Priority Date: 04/23/2013
• Status: Active Grant

• Current Assignee: Robinson, Bruce R.
• Original Assignee: Robinson, Bruce R.
• Inventors: Robinson, Bruce R.
• Primary Examiner(s): Smith, Duane
• Assistant Examiner(s): PHAM, MINH CHAU THI
• Application Number:
  US13/868,567
• Publication Number:
  US 20140311349A1
• Time in Patent Office: 896 Days
• Field of Search: 553/851, 554/23, 554/71, 554/73, 554/47, 554/58, 554/62, 952/67, 731/701.6, 731/701.7, 731/702.6, 731/702.7
• US Class Current: 1/1
• CPC Class Codes: B01D 46/0012 In-line filters
• CPC Class Codes: G01K 1/08 Protective devices, e.g. casings
• CPC Class Codes: G01W 1/00 Meteorology
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

A shielded sensor system and method features an airflow housing including a downward facing inlet and a downward facing outlet. At least one sensor is disposed in the housing between the inlet and the outlet. A particulate screener is located between the inlet and the sensor.

Claims

1. A shielded sensor system comprising:

an airflow housing including;

a downward facing inlet,

a downward facing outlet;

at least one sensor in the housing between the inlet and the outlet; and

a particulate screener between the inlet and the sensor.

2. The system of claim 1 in which the particulate screener includes a helix in the housing disposed to swirl the airflow and a wire screen cylinder downstream of the helix for capturing particulates.

3. The system of claim 2 in which the helix and wire screen cylinder are within a first conduit.

4. The system of claim 3 in which the first conduit is disposed within a second conduit disposed in the housing.

5. The system of claim 4 in which the sensor includes at least one temperature probe in the first conduit.

6. The system of claim 5 in which the temperature probe is mounted to a flange mounted to the first and second conduits.

7. The system of claim 6 in which the flange includes orifices therethrough for airflow in the first and second conduits.

8. The system of claim 7 in which the flange is fabricated to mount different sensor configurations and the orifices are fabricated based on the sensor configuration.

9. The system of claim 1 in which the housing includes a first vertical section extending upward from the inlet and the sensor is disposed in the first vertical section.

10. The system of claim 9 in which the housing further includes a second vertical section extending upward from the outlet.

11. The system of claim 10 in which the housing further includes a horizontal section between the first and second vertical sections.

12. The system of claim 1 in which the inlet and outlet are the same or approximately the same size.

13. The system of claim 1 further including at least a first radiation shield proximate the inlet.

14. The system of claim 13 in which the first radiation shield includes a plate with holes therethrough.

15. The system of claim 14 further including a second radiation shield upstream and spaced from the first radiation shield.

16. The system of claim 15 in which the second radiation shield includes a plate behind the holes in the first radiation shield.

17. The system of claim 1 further including at least one fan upstream of the sensor.

18. The system of claim 17 in which there are at least two fans upstream of the sensor.

19. The system of claim 17 further including a controller configured to control the operation of said fan.

20. The system of claim 19 further including an airflow sensor and/or a light sensor providing an output to the controller and wherein the controller is configured to control the fan based on the output of the airflow sensor and/or the light sensor.

21. A sensor shield manufacturing method comprising:

constructing a housing to include a downward facing inlet and a downward facing outlet;

disposing a sensor in the housing between the inlet and the outlet; and

disposing a particulate screener between the inlet and the sensor.

22. The method of claim 21 in which disposing a particulate screener in the housing includes disposing a helix in the housing behind a screen for capturing particulates in the swirl of airflow caused by the helix.

23. A shielded sensor system comprising:

an airflow housing including first and second vertical sections and a horizontal section therebetween,

the first vertical section defining a downward facing inlet oriented perpendicularly or nearly perpendicularly to the ground,

the second vertical section defining a downward facing outlet oriented perpendicularly or nearly perpendicularly to the ground;

at least one sensor in the first vertical section of the housing between the inlet and the outlet; and

a particulate screener between the inlet and the sensor.

24. A shielded sensor system comprising:

an airflow housing including;

a first vertical section and a second vertical section,

the first vertical section defining a downward facing inlet,

the second vertical section defining a downward facing outlet, and

a section between the first vertical section and the second vertical section separating the first vertical section from the second vertical section;

at least one sensor in the first vertical section of the housing between the inlet and the outlet; and

a particulate screener between the inlet and the sensor.

25. The system of claim 24 in which the section between the first vertical section and the second vertical section is horizontal.