Title:
WIND VELOCITY SENSOR
Document Type and Number:
Japanese Patent JP3264605
Kind Code:
B2
Abstract:
PURPOSE: To provide a wind velocity sensor which can prevent dust particles from being stuck to a resistance heating body without using a filter at an air supply port.
CONSTITUTION: A tube body 14 is a cylinder whose thickness is constant. A reduced-diameter part 15 has a constant thickness, and its cross-sectional shape in its axial direction is narrowed to the radial direction toward the downstream side. In addition, the outer circumference of the reduced-diameter part 15 is formed in such a way that its diameter is a little smaller than that of the inner circumference of the tube body 14, and the reduced-diameter part is inserted into, and fixed to, the tube body 14. Consequently, a main ventilation passage 16 is formed of the inner wall of the tube body 14 and of the inner wall of the reduced-diameter part 15. A bypass formation part 17 is fixed to, and installed at, the upper part of the tube body 14, and a bypass 18 is formed in its interior. A wind-velocity-sensor board 24 which contains a resistance heating body 26 is installed at the bypass 18.
Inventors:
Hiroaki Sasaki
Application Number:
JP12825295A
Publication Date:
March 11, 2002
Filing Date:
May 26, 1995
Export Citation:
Assignee:
Rinnai Corporation
International Classes:
G01P5/12; F23N5/18; G01F1/68; G01F1/684; (IPC1-7): G01P5/12; G01F1/684
Domestic Patent References:
| JP1296110A | ||||
| JP5630616A | ||||
| JP5677716A | ||||
| JP5923669U |
Attorney, Agent or Firm:
Tatsuhiko Sato (1 outside)