Pressure transducer assembly with thermal shield
First Claim
Patent Images
1. A pressure transducer, comprising:
- (A) a thermally conductive heater shell;
(B) a capacitive pressure sensor disposed in the shell, the sensor including a flexible diaphragm and a conductor, a capacitance between the diaphragm and conductor being indicative of a pressure on the diaphragm;
(C) an electronics assembly disposed in the shell, the assembly being electrically connected to the sensor, the assembly generating a signal representative of the capacitance;
(D) a thermally conductive plate disposed in the heater shell, the plate being disposed between the sensor and the assembly; and
(E) a thermally conductive spring disposed in the shell, the spring contacting an outer periphery of the plate and the shell.
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Abstract
A capacitive pressure transducer including a heater shell, a capacitive pressure sensor, an electronics assembly and a thermal barrier is presented. The sensor and the electronics assembly are disposed in the heater shell. The thermal barrier is also disposed in the heater shell and is disposed between the sensor and electronics assembly.
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Citations
21 Claims
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1. A pressure transducer, comprising:
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(A) a thermally conductive heater shell;
(B) a capacitive pressure sensor disposed in the shell, the sensor including a flexible diaphragm and a conductor, a capacitance between the diaphragm and conductor being indicative of a pressure on the diaphragm;
(C) an electronics assembly disposed in the shell, the assembly being electrically connected to the sensor, the assembly generating a signal representative of the capacitance;
(D) a thermally conductive plate disposed in the heater shell, the plate being disposed between the sensor and the assembly; and
(E) a thermally conductive spring disposed in the shell, the spring contacting an outer periphery of the plate and the shell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pressure transducer, comprising:
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(A) an enclosure;
(B) a capacitive pressure sensor disposed in the enclosure, the sensor including a flexible diaphragm and a conductor, a capacitance between the diaphragm and conductor being indicative of a pressure on the diaphragm;
(C) an electronics assembly disposed in the enclosure, the assembly being electrically connected to the sensor, the assembly generating a signal representative of the capacitance;
(D) a thermally conductive plate disposed in the enclosure, the plate being disposed between the sensor and the assembly; and
(E) a thermally conductive spring disposed in the enclosure, the spring contacting an outer periphery of the plate and the enclosure. - View Dependent Claims (12)
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13. A pressure transducer, comprising:
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(A) an external shell;
(B) a thermally conductive shell disposed within the external shell;
(C) a heater coupled to the thermally conductive shell;
(D) a capacitive sensor disposed within the thermally conductive shell, the capacitive sensor including a flexible diaphragm and a conductor, a capacitance between the diaphragm and the conductor being indicative of a pressure on the diaphragm;
(E) an electronics assembly disposed within the thermally conductive shell, the electronics assembly being electrically connected to the capacitive sensor, the electronics assembly generating a signal representative of the capacitance;
(F) a thermally conductive plate disposed within the thermally conductive shell, the plate being disposed between the capacitive sensor and the electronics assembly; and
(G) a thermally conductive spring disposed within the thermally conductive shell, the spring contacting an outer periphery of the plate and an inner periphery of the thermally conductive shell. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification