| 摘要 |
PURPOSE:To obtain the measuring device which can be handled simply and readily in measuring the fluid speed, by using an acoustic wave generating tube wherein a large inner diameter part and a small inner diameter part are regularly continued repeatedly, thereby analyzing the frequency of the acoustic wave. CONSTITUTION:In an air conditioner 1, a blower 2, a heat exhanger, a compressor, and the like and incorporated, thereby forming a refregerating cycle. Air is blown or drawn to or from the upper part and lower part of the conditioner 1 as shown by the arrows. The acoustic wave generating tube 3 is arranged in parallel with flowing direction of the blown air. A top part 4 of the large inner diameter part and a bottom part 5 of the small inner diameter part are regularly continued and repeated, thereby forming a path. An acoustic wave frequency analyzer 6 receives the signal from a microphone 7 which is arranged in the vicinity of the generating tube 3. The generating tube 3 is attached to the tip of a stand 8 and carried. From the acoustic wave frequency obtained in this constitution, the fluid speed can be obtained. |
