US 8,418,566 B2 · Multi-layered flow passage member and ultrasonic wave fluid measuring device

Abstract

An objective of the invention is to provide a multilayered flow passage member that enhances fluid measurement accuracy of an ultrasonic fluid measurement apparatus and an ultrasonic fluid measurement apparatus using the multilayered flow passage member. When fusible projections 20 are fused by a heating head 21 while partition plates 11 are inserted into side plates 13 and 14, a fused state provided by the heating head 21 changes according to either side of each of the partition plates 11, because fuse surfaces at leading ends of the respective fusible projections 20 are sloped in the vertical direction. An outermost end of each of fusible projections 25 that first contacts the heating head 21 is first fused. During a course of the fusible projections 25 being fused toward their roots, the partition plates 11 are pressed against ends of respective insert holes 17a that are on the opposite side of the outermost ends that are first fused. As a result, the partition plates 11 become one-sided with respect to the respective insert holes 17a and fixed by means of positional accuracy of the insert holes 17a. Even when clearance exists between the partition plates 11 and the insert holes 17a, the partition plates can be fused with superior accuracy.

Claims13

Dependent claims

A multilayered flow passage member including partition plates that are placed in an angular-sleeve-shaped measurement flow passage formed in an ultrasonic fluid measurement apparatus and that partition the measurement flow passage into a plurality of flat flow passages;

side plates that cross the partition plates at a right angle and that support both edges of the respective partition plates;
and upper and lower plates that are placed in parallel top and bottom the partition plates and that are coupled with the side plates, to thus support both edges, the flow passage member comprising:
a lopsided fuse part including
insert holes through which portions of the partition plates are to be inserted into the side plates;
and
fusible projections provided above and below the respective insert holes, wherein
the fusible projections are fused by a fusing device while the partition plates are inserted into the respective side plates, thereby fixing the partition plates to the respective side plates, and wherein
a fused state produced by the fusing device is caused to change according to either side of each of the partition plates, in such a way that clearance between the insert holes and the respective partition plates is formed in a given direction.

5 more elements

A multilayered flow passage member comprising:

partition plates that create partitions for a plurality of flat flow passages;
side plates that cross the respective partition plates at a right angle and that support both ends of the respective partition plates;
a top plate and a bottom plate that are disposed in parallel top and bottom the partition plates and that are coupled with the respective side plates, to thus support both edges;
support portions that are to be supported by the side plates and that are formed in portions of both edges of the respective partition plates;
and
insert holes through which the support portions are to be inserted into the respective side plates, wherein
each of the insert holes includes an insert portion that assumes a shape of an aperture and that is greater than the support portion so as to facilitate insertion of the support portion and a stationary portion that is provided adjacently to the insert portion within a plane orthogonal to a direction into which the support portion is inserted into the insert portion, that has a part substantially identical in shape with a cross sectional profile of the support portion, and that makes the support portion stationary.

4 more elements

Dependencies are inferred from the claim text.

Multi-layered flow passage member and ultrasonic wave fluid measuring device

Life of this patent

Multi-layered flow passage member and ultrasonic wave fluid measuring device

Life of this patent

Abstract

Claims13