Apparatus for containing a temperature sensing device

• US 5,695,285 A
• Filed: 08/07/1996
• Issued: 12/09/1997
• Est. Priority Date: 08/05/1994
• Status: Expired due to Fees

• Current Assignee: SSI Technologies, Inc. (Amphenol Corporation)
• Original Assignee: SSI Technologies, Inc. (Amphenol Corporation)
• Inventors: Mattes, Michael F., Seefeldt, James D., Day, William J., Kuberka, Jeffrey A.
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): HIRSHFELD, ANDREW HOWARD
• Application Number:
  US08/692,985
• Time in Patent Office: 489 Days
• Field of Search: 374/100, 374/120, 374/163, 374/165, 374/189, 374/208, 374/209, 374/179, 374/183, 374/185, 374/188, 236/DIG. 12, 236/DIG. 19, 165/28, 136/230, 136/232, 136/233, 338/14, 338/22 R, 338/72, 338/205, 338/239, 338/240, 338/244
• US Class Current: 374/208
• CPC Class Codes: G01K 1/16 Special arrangements for conducting heat from the object to the sensitive element

Abstract

A temperature sensor assembly for measuring ambient temperature and including a housing defining an enclosure. A temperature sensor is mounted within the enclosure. The housing includes a brass cap and a liner for conducting heat from the brass cap to the temperature sensor. The temperature sensor is mounted on the brass liner and is electrically insulated from the brass liner by a thermally conductive material.

Claims

1. A temperature sensor assembly for measuring ambient temperature, the assembly comprising:

a connector having an internal recess;

a thermally conductive end cap sealingly fixed to said connector, the end cap and connector, including the internal recess, defining a sealed cavity;

a temperature sensor located within the internal recess;

heat conducting means for conducting heat from said end cap to said temperature sensor, the heat conducting means including a liner having a first portion located in the internal recess and a second portion located radially outside the internal recess and between the connector and the end cap and;

an electrically insulative member located between the first portion of the liner and the temperature sensor.

2. A temperature sensor assembly as set forth in claim 1 wherein said thermally conductive cap includes a threaded connector portion.

3. A temperature sensor assembly as set forth in claim 1 wherein the electrically insulative member is an electrically insulating thermally conductive disk mounted between said liner and said temperature sensor to electrically insulate said temperature sensor from said liner and to allow thermal energy to be conducted from said liner to said temperature sensor.

4. A temperature sensor assembly as set forth in claim 1 and further including at least one electrically conductive terminal connected to said temperature sensor, said terminal having at least one land molded into the connector so as to prevent leakage of corrosive elements from the ambient environment into the sealed cavity.

5. A temperature sensor assembly as set forth in claim 4 wherein said terminal land includes a tapered annular surface engaging said connector to provide a seal between said terminal and said connector.

6. A temperature sensor assembly as set forth in claim 1 wherein said temperature sensor is an integrated circuit temperature sensor.

7. A temperature sensor assembly as set forth in claim 1 wherein said connector has an exterior surface and wherein said end cap has a deformable portion engaged with said exterior surface of said connector.

8. A temperature sensor assembly as set forth in claim 1 wherein said connector includes a shoulder surrounding said internal recess and wherein said liner is formed to mate with said shoulder and said internal recess.

9. A temperature sensor assembly as set forth in claim 1 wherein said temperature sensor is mounted on said liner.

10. A temperature sensor assembly for measuring ambient temperature, the assembly comprising:

enclosure defining means including a connector having an internal recess and an external surface defining a shoulder, and the enclosure defining means including an end cap having a crimping wall engaging the shoulder, at least a portion of said end cap being thermally conductive;

temperature sensing means disposed within said internal recess; and

heat conducting means for conducting heat from said thermally conductive portion of said end cap to said temperature sensing means, said heat conducting means including a liner having a first portion located in the internal recess and having a second portion located radially outside the internal recess and between the connector and the end cap, the heat conducting means also including an electrical insulator electrically insulating said temperature sensing means from said liner.

11. A temperature sensor assembly as set forth in claim 10 wherein said temperature sensing means includes a temperature sensor circuit.

12. A temperature sensor assembly as set forth in claim 11 wherein the temperature sensor circuit is mounted on said electrical insulator.

13. A temperature sensor assembly as set forth in claim 10 wherein said liner is metallic and wherein said temperature sensing means is mounted on said liner so that thermal energy is transmitted from said thermally conductive portion of said end cap to said liner and to said temperature sensing means.

14. A temperature sensor assembly as set forth in claim 13 wherein the electrical insulator is thermally conductive so as to conduct thermal energy from said thermally conductive portion of the end cap to said temperature sensing means.

15. A temperature sensor assembly as set forth in claim 10 and further including at least one electrically conductive terminal connected to said temperature sensing means, said terminal having at least one land molded into the connector so as to prevent leakage of corrosive elements from the ambient environment into the enclosure defining means.

16. A temperature sensor assembly as set forth in claim 15 wherein said terminal land includes a tapered annular surface engaging said connector to provide a seal between said terminal and said connector.

17. A temperature sensor assembly as set forth in claim 10 and further comprising a seal member engaging said end cap and said shoulder.

18. A temperature sensor assembly as set forth in claim 10 wherein said enclosure defining means is a sealed enclosure.

19. A temperature sensor assembly for measuring ambient temperature, the assembly comprising:

a connector including means defining a cavity including a recessed surface;

a thermally conductive liner mounted in said means defining a cavity on said recessed surface, the liner providing a mounting surface,

a thermally conductive, electrically insulating disk mounted on said mounting surface of said liner;

an integrated circuit temperature sensor mounted on said disk; and

a thermally conductive cap mounted on said connector enclosing said means defining a cavity and thereby defining an enclosure, sealing said temperature sensor within said enclosure, and engaging said liner such that ambient heat is absorbed by said cap and is conducted from said cap through said thermally conductive liner, through said thermally conductive, electrically insulating disk and to said temperature sensor.

20. A temperature sensor assembly as set forth in claim 19 and further including at least one electrically conductive terminal connected to said integrated circuit temperature sensor, said terminal having at least one land molded into the connector so as to prevent leakage into the enclosure of corrosive elements in the ambient environment.

21. A temperature sensor assembly as set forth in claim 20 wherein said terminal land includes a tapered annular surface engaging said connector to provide a seal between said terminal and said connector.