JPH0166047U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 3 are for explaining the basic concept of the present invention, and Figure 1 is a basic configuration diagram (diagram corresponding to claims) of a condenser microphone type differential pressure detector according to the present invention. , FIGS. 2A to 2D each show an explanatory diagram of its operation, and FIG. 3 shows a basic configuration diagram (diagram corresponding to claims) of a condenser microphone type differential pressure detector according to a modification of FIG. 1. . Further, FIGS. 4 to 7 show specific embodiments of the present invention, and FIG. 4A is an external perspective view of a condenser microphone type differential pressure detector according to the present invention;
FIG. 4B is a vertical side view of the same, FIG. 4C is a reduced vertical side view for explaining its usage condition, FIG. Figure 6A is a front view of a modified example, Figure 6B is a view taken along the line - - of Figure 6A to explain its operation, and Figures 7A and 7B are respectively of further applied examples. It is an enlarged front view of the main part. Furthermore, FIGS. 8 and 9 are for explaining the technical background of the present invention and problems of the prior art, and FIG. 8 shows a condenser microphone type differential pressure detector having a general configuration. FIG. 9 shows a longitudinal cross-sectional side view of a condenser microphone type differential pressure detector having a conventional structure that is most closely related to the concept of the present invention. _F1 ...first pressure fluid, _F2 ...second pressure fluid, 1...movable electrode, 2...fixed electrode, S...pressure sensitive sensor.

Claims (1)

[Claims for Utility Model Registration] A condenser microphone type differential pressure detector used to detect the differential pressure between a first pressure fluid and a second pressure fluid, the movable device comprising a flexible diaphragm member. Two capacitor microphone type pressure-sensitive sensors having substantially the same mechanical and electrical properties, each having an electrode stretched in an electrically insulated state at an appropriate distance from a fixed electrode, are connected to each other at appropriate intervals. The fixed electrodes or the movable electrodes are arranged in parallel so as to be spaced apart from each other and to face each other so as to be located on one straight line, and one of the first pressure fluid and the second pressure fluid is connected to the The fluid may be introduced into the gap between the movable electrode and the fixed electrode in each pressure-sensitive sensor, and the other fluid may be introduced into the outer surface of the movable electrode in each pressure-sensitive sensor. A condenser microphone type differential pressure detector.