Multilayer channel member and ultrasonic fluid measuring device using same

A technology of flow path components and fluid meters, which is applied in the direction of measuring devices, liquid/fluid solid measurement, flow measurement/mass flow, etc., can solve the problems of measurement accuracy reduction, cost increase, size deviation, etc., and improve the side plate Effects of strength, improvement of measurement accuracy, and simple configuration
CN102144147AInactive Publication Date: 2011-08-03PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
PANASONIC CORP
Publication Date
2011-08-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

Provided are a multilayer channel member enabling improvement of the accuracy of measurement of a fluid by an ultrasonic fluid measuring device and an ultrasonic fluid measuring device using the same. Fusion projections (20) are fused by a heating head (21) while partition plates (11) are inserted between side plates (13, 14). Since the welding surfaces of the tip portions of the fusion projections (20) are inclined vertically, the states of fusion of the upper and bottom surfaces of each partition plate (11) by the heating head (21) are different. The tip portion of each fusion projection (25) first brought into contact with the heating head (21) is fused first, and the fusion progresses to the root portion of the fusion projection (25). During the fusion, the partition plates (11) are pressed against the edges of insertion holes (17a) opposite to the tip portions fused first, biased with respect to the insertion holes (17a), secured with the position accuracy by the insertion holes (17a), and thus can be welded accurately even if there is a gap between a partition plate (11) and the insertion hole (17a).
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Description

technical field

[0001] The present invention relates to a multilayer flow path member having a measurement flow path composed of a plurality of flat flow paths and an ultrasonic fluid measurement device using the same. Background technique

[0002] The ultrasonic fluid measuring device is a device that flows a fluid through a measurement channel, propagates ultrasonic waves in the measurement channel, measures the propagation time of the ultrasonic waves, and obtains the fluid flow velocity based on the measured information.

[0003] Furthermore, the flow path for measurement has a rectangular shape with a rectangular cross section, and a pair of ultrasonic transceivers are provided on opposite short sides.

[0004] The pair of ultrasonic transceivers are arranged so as to form an ultrasonic propagation path at a predetermined angle with respect to the flow direction of the measurement flow path, that is, obliquely crossing the fluid flow direction.

[0005] Furthermore, in...

Claims

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