Patent EP0070152A1 successfully refreshed from Google Patents.
EP0070152A1
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Flowmeter with circulating body
Assignee: BorgWarner Transmission Systems Monaco SAM
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Filing: 1982-07-08
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Granted: —
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Expires: 2002-07-08
Abstract
Abstract A flowmeter has an eg. toroidal continuous chamber (9) around which circulations of a ball (10) are counted eg. by optical means (14). The majority of the stream to be measured passes through the instrument without traversing the chamber (9). through which only 20% of the total flow may pass. A constriction (3) in the main stream diverts the minor flow around a bypass path including the chamber (9). The constriction (3) may be an aperture formed in a wall or floor (4) of the chamber (9), which wall contains one half of the toroid as a groove.
Inventors
- 👤 Jean Paul Corbier
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:00
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/056
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
159 words
A flowmeter comprising a housing having an upstream conduit (1); a downstream conduit (2); an internal chamber (9) defining a continuous channel along which fluid, which can enter via an entry port (11) communicating with the upstream conduit (1), can pass along a loop before exit via an exit orifice port communicating with the downstream conduit (2) of the flowmeter; a body (10) located in the chamber which during operation is propelled by the fluid having entered via said entry port to execute multiple transits of the continuous channel of the internal chamber; which body (10) transits are registered (figures 7, 8 or 9) as the required indication of flow, characterized in that said entry port (11), said continuous channel and said exit port participate in a bypass channel by which some fluid is diverted from a main flow which enters the upstream conduit (1) and is caused to rejoin the main flow for exit at the downstream conduit.
Claim 2
Dependent Claim
159 words
A flowmeter comprising a housing having an upstream conduit (1); a downstream conduit (2); an internal chamber (9) defining a continuous channel along which fluid, which can enter via an entry port (11) communicating with the upstream conduit (1), can pass along a loop before exit via an exit orifice port communicating with the downstream conduit (2) of the flowmeter; a body (10) located in the chamber which during operation is propelled by the fluid having entered via said entry port to execute multiple transits of the continuous channel of the internal chamber; which body (10) transits are registered (figures 7, 8 or 9) as the required indication of flow, characterized in that said entry port (11), said continuous channel and said exit port participate in a bypass channel by which some fluid is diverted from a main flow which enters the upstream conduit (1) and is caused to rejoin the main flow for exit at the downstream conduit.
Claim 3
Dependent Claim
26 words
A flowmeter according to Claim 1, characterized in that the fluid channelling is arranged so that the diverted fluid is about 20% of the main flow.
Claim 4
Dependent Claim
30 words
A flowmeter according to Claim 1 or 2 characterized. in that the diverted fluid itself describes a plurality of transits of the continuous channel before leaving the internal chamber (9).
Claim 5
Dependent Claim
34 words
A flowmeter according to Claim 1, 2 or 3 characterized in that the chamber has a toroidal form, and the entry port (11) comprises a nozzle by which fluid enters tangentially to the toroid.
Claim 6
Dependent Claim
36 words
A flowmeter according to Claim 4 characterized in that the exit port comprises a connection towards the rejoining with the main fluid stream which connection leaves the toroid in a direction parallel to the tangential entry.
Claim 7
Dependent Claim
18 words
A flowmeter according to Claim 5 characterized in that the exit port connection is inward of the toroid.
Claim 8
Dependent Claim
27 words
A flowmeter according to Claim 6 characterized in that the exit port is relatively close to the inlet port aroud the toroid, eg. 35° or so therefrom.
Claim 9
Dependent Claim
34 words
A flowmeter according to Claims 5,6 or 7 characterized in that the exit port is dimensioned so that a majority of the fluid flowing within the toroid does not exit via the exit port.
Claim 10
Dependent Claim
19 words
A flowmeter according to Claim 8 characterized in that the fluid makes 20 revolutions around the toroid before exiting.
Claim 11
Dependent Claim
41 words
A flowmeter according to any of Claims 1 - 9 characterized in that the body is of transparent material eg. polycarbonate the moving body is non-transparent, and transits of the body past a point on the closed channel are detected optically.
Claim 12
Dependent Claim
51 words
A flowmeter according to any of Claims 1 - 10 characterized in that the main flow path comprises a constriction (3 or 33) by which a pressure difference is created to divert fluid towards the chamber (9), eg. about 20% of the total flow (main flow + diverted or bypass flow).
Claim 13
Dependent Claim
30 words
A flowmeter according to Claim 11 characterized in that a main wall of the chamber is provided by a diaphragm (4) at the centre'of which is formed said constriction (3).
References Cited (Backward Citations)
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