DK142127B

DK142127B - Liquid flow meter.

Info

Publication number: DK142127B
Application number: DK324278A
Authority: DK
Inventors: Jan Andersson
Original assignee: Jan Andersson
Priority date: 1978-07-20
Filing date: 1978-07-20
Publication date: 1980-09-01
Also published as: DK324278A; DK142127C

Description

\ ESQT J\ ESQT J

\fia/ (11) FREM LÆG 6 ELS ESSKRIFT 142127 DANMARK (51) int.ci.3 0 01 f 19/00 «(21) Ansøgning nr. ~52b2/r]8 (22) Indleveret den 20. Jul. 1978 (24) Lebedag 20. Jul. 1978 (44) Ansøgningen fremlagt og\ fia / (11) PROMOTE 6 ELS PRINT 142127 DENMARK (51) int.ci.3 0 01 f 19/00 '(21) Application No ~ 52b2 / r] 8 (22) Filed on 20 Jul. 1978 (24) Life day 20 Jul. 1978 (44) The application presented and

frsmlaggelsesskriftet offentliggjort den 1· S ep. I98Othe writ of slaughter published on 1 · S ep. I98O

DIREKTORATET FORDIRECTORATE OF

PATENT- OG VAREMÆRKEVÆSENET (3°) Prioritet begæret fra den (72) JAN ANDERSSON, Domherreetigen 21 P, 61 k 00 Soederkoeping, SE.PATENT AND TRADEMARKET SYSTEM (3 °) Priority requested from (72) JAN ANDERSSON, Domherreetigen 21 P, 61 k 00 Soederkoeping, SE.

Opfinder: Samme. ' (74) Fuldmægtig under sagens behandling:Inventor: Same. (74) Plenipotentiary in the proceedings:

Skandinavisk Patent Bureau v/Prode Larsen.Scandinavian Patent Bureau v. Prode Larsen.

(64) Apparat til afmåling af væskemængder.(64) Liquid flow meter.

Opfindelsen angår et apparat til afmåling af væskemængder i et ikke-graderet afmålingskar med bund og sidevægge, der afgrænser en øvre åbning, og i hvilket i det mindste en del er i hovedsagen lodret og transparent.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to an apparatus for measuring liquid quantities in an un-graded measuring vessel with bottom and side walls defining an upper opening and in which at least a part is substantially vertical and transparent.

5 Der kendes måleglas og niveaumålere til visuel aflæsning baseret på forskellen i brydningsindex mellem luft og væske.5 Measuring glass and level gauges are known for visual reading based on the difference in refractive index between air and liquid.

Et kendt måleglas er udformet med en over for graderingen anbragt matteret lodret stribe, hvis bredde set gennem måleglasset bliver forøget, når dette fyldes med væske. Der 10 kendes en vandvarmer med et i længderetningen belyst således udformet vandstandsviserrør, at lysstrålerne over vandoverfladen reflekteres i selve rørmaterialet, men under denne 2 142127 reflekteres ind i vandet, der oplyses under vandoverfladen til lettelse af aflæsningen. Endvidere kendes niveaumålere af transparent materiale omfattende en ned i en beholder ragende trinformet nedre del og en øvre plan del, hvorpå 5 det umiddelbart kan aflæses, hvilket trin der er dækket af væske. Endelig er ved en kendt niveaumåler garderingsstreget udformet som i retning mod en øvre åbning i en beholder reflekterende organer, hvis reflekterende virkning mod åbningen ophører ved nedsænkning i væske.A known measuring glass is formed with a matte vertical stripe placed opposite the graduation, whose width seen through the measuring glass is increased as it is filled with liquid. A water heater with a longitudinally illuminated water level pointer is known so that the light rays above the water surface are reflected in the pipe material itself, but below this is reflected into the water which is illuminated below the water surface for ease of reading. Furthermore, level gauges of transparent material are known comprising a lower part of a container projecting the step-shaped lower part and an upper planar part, upon which it can be read immediately, which stage is covered with liquid. Finally, at a known level gauge, the guard line is formed as towards an upper opening in a container reflecting means whose reflective action against the opening ceases upon immersion in liquid.

10 Det er formålet med opfindelsen at anvise et apparat af den angivne art, hvilket apparat er let aflæseligt, enkelt i brug og billigt at fremstille. Dette opnås ifølge opfindelsen ved,_ at der langs med den lodrette transparente del af afmålingskarret og adskilt fra dettes yderside ved en luft-15 spalte er anbragt en med graderingsstreger forsynet skala med henblik på, at stråler fra skalaens graderingsstreger kan passere gennem grænsefladen ved karrets indervæg ved tomt kar, hvorved graderingsstregeme er synlige fra karrets åbning, medens de nævnte stråler totalreflekteres vad 'grænse-20 fladen mellem karrets indervæg og væsken, når karret er helt eller delvis fyldt med væske. Herved vil det for et øje se ud som om skalaens graderingsstreger forsvinder nedefra efterhånden som væske fyldes i afmålingskarret. Det er herved let, at aflæse graderingsskalaen oppefra medens apparatet 25 står på et vandret underlag, f.eks. et bord. Apparatet ifølge opfindelsen kan udnyttes på alle områder, hvor man har brug for at afmåle små eller middelstore væskemængder, f.eks. kan det bruges til afmåling af medicin.SUMMARY OF THE INVENTION It is an object of the invention to provide an apparatus of the kind specified, which is easily readable, easy to use and inexpensive to manufacture. This is achieved according to the invention in that, along the vertical transparent part of the measuring vessel and separated from its outside by an air gap, a graduated scale is arranged so that rays from the graduation lines of the scale can pass through the interface of the vessel. an empty wall inner wall, whereby the grading strips are visible from the vessel's opening, while the said rays are totally reflected as to the interface between the inner wall of the vessel and the liquid when the vessel is completely or partially filled with liquid. In this way, it will appear to one eye as if the scale grading lines disappear from the bottom as liquid is filled into the measuring vessel. It is thereby easy to read the grading scale from above while the apparatus 25 is on a horizontal surface, e.g. a table. The apparatus according to the invention can be used in all areas where it is necessary to measure small or medium amounts of liquid, e.g. it can be used for measuring medication.

Ifølge opfindelsen kan skalaen være anbragt på et ydre 30 kar, der omslutter afmålingskarret. Herved opnås et enkelt og billigt apparat.According to the invention, the scale can be arranged on an outer vessel surrounding the metering vessel. This provides a simple and inexpensive device.

Ifølge opfindelsen kan afmålingskarret og det ydre kar begge være udformet med koniske sidevægge. Herved opnås, at det er lettere at anbringe afmålingskarret i det ydre kar 35 og borttage det, hvilket letter afmålingen af væskemængder i flere afmålingskar, f.eks. ved udmåling af medicin til et antal patienter.According to the invention, the metering vessel and the outer vessel can both be formed with tapered side walls. Hereby it is achieved that it is easier to place the metering vessel in the outer vessel 35 and remove it, which facilitates the measurement of the quantities of liquid in several metering vessels, e.g. when measuring medication for a number of patients.

142127142127

Ifølge opfindelsen kan graderingsstregerne være anbragt på det ydre kars indre sidevæg. Herved opnås en enkel ud-ferelsesform for apparatet ifølge opfindelsen.According to the invention, the grading bars may be disposed on the inner side wall of the outer vessel. This provides a simple embodiment of the apparatus according to the invention.

Ifølge opfindelsen kan det ydre kar være gennemskinne-5 ligt og graderingsskalaen være anbragt på det ydre kars ydre sidevæg. Herved opnås en anden enkel udførelsesform for apparatet ifølge opfindelsen.According to the invention, the outer vessel may be translucent and the graduation scale may be arranged on the outer side wall of the outer vessel. Hereby another simple embodiment of the apparatus according to the invention is obtained.

Opfindelsen vil blive beskrevet nærmere nedenfor i tilslutning til tegningen, der i skematisk perspektivbillede, IC med partielt bortbrudte partier, viser et apparat ifølge den foreliggende opfindelse.The invention will be described in more detail below with reference to the drawing, which in schematic perspective view, IC with partially broken away portions, shows an apparatus according to the present invention.

Apparatet indbefatter et ydre kar 1, der med en vis spalte omslutter et indre afmålingskar 2 for den væske, der skal afmåles. En graderingsskala 3 er anbragt på den 15 indre sidevæg af det ydre kar 1. Med henvisningstallet 4 betegnes niveauet eller overfladen af den væske, som findes i afmålingskarret 2. Betragtes væskeoverfladen 4 oppefra på den i figuren antydede måde, vil i grænsefladen mellem væskeoverfladen 4 og den indre sidevæg af afmålingskarret 20 2 en randlysstråle 5 brydes på den i figuren i hovedsagen angivne måde fra graderingsskalaen 3· En lysstråle, beliggende inden for denne randlysstråle, for eksempel den i figuren markerede lysstråle 6, vil derimod totalreflekteres. Lysstrålen 6 fra streger på graderingsskalaen, hvis 25 afsnit er beliggende under den af strålen 5 repræsenterede streg vil ved totalreflektionen så at sige forsvinde for øjet.The apparatus includes an outer vessel 1 which, with a certain gap, encloses an inner measuring vessel 2 for the liquid to be measured. A grading scale 3 is placed on the inner side wall of the outer vessel 1. By reference numeral 4 is the level or surface of the liquid contained in the measuring vessel 2. If the liquid surface 4 is viewed from above in the manner indicated in the figure, in the interface between the liquid surface 4 and, the inner side wall of the measuring vessel 20 2, an edge light beam 5 is refracted in the manner indicated in the figure in the main from the graduation scale 3. A light beam located within this edge light beam, for example, the light beam 6 indicated in the figure, will be totally reflected. The light beam 6 from lines on the graduation scale, whose 25 sections are located below the line represented by the ray 5, will disappear from the eye, so to speak, in the total reflection.

For disse "centralere" stråler 6 vil lyset således gå fra en graderingsstreg på den uden for afmålingskarret med 30 en spalte fra dette anbragt graderingsskala, gennem medier af forskellig optisk tæthed på en sådan måde, at strålen totalreflekteres. Således vil den del af graderingsskalaen 3, der ligger under væskeoverfladen, ikke ses, hvilket letter målingen ved at det er muligt at aflæse graderingsska-35 laen oppefra. Opfindelsen eliminerer derved behovet for, som ved sædvanlige enkle målekar, der er udstyret med en graderingsskala, at løfte karret op til øjenhøjde for at graderingsskalaen skal kunne aflæses.Thus, for these "central" rays 6, the light will go from a grading bar to the outside of the metering vessel with a slit from this graduated scale, through media of different optical density in such a way that the beam is fully reflected. Thus, the part of the grading scale 3 which is below the liquid surface will not be seen, which facilitates the measurement by making it possible to read the grading scale from above. The invention thereby eliminates the need, as with ordinary simple measuring vessels equipped with a grading scale, to raise the vessel to eye level for the grading scale to be read.

Claims

In the exemplary embodiment of the invention described above, the metering vessel 2 is translucent or has at least one vertical, transparent portion through which the grading scale 3 can be considered. In this embodiment, the outer vessel 1 is opaque or opaque and the graduation scale is arranged on the inner surface of the vessel. Instead of a vessel, a frame adapted to the measuring vessel can be used, including a scale, cooperating with the vertical transparent portion of the measuring vessel. However, it is also possible to utilize a translucent outer vessel 1, in which case the grading scale 3 may be arranged on the outer surface of the vessel, although this is not necessary. In the apparatus shown in the figure, for reasons of clarity, the air gap between the outer vessel and the measuring vessel is shown to be exaggerated. Within the scope of the basic idea of the invention, for example, an outer vessel 1 can be used as a base or ground unit together with a large number of individual measuring vessels 2, 20 which are sequentially arranged in the outer vessel for controlled measurement. Claims.

Apparatus for measuring liquid quantities in a non-graded metering vessel with bottom and side walls defining an upper opening, in which at least a part is substantially vertical and transparent, characterized in that along the vertical , a transparent portion of the metering vessel (2) and separated from its exterior by an air gap is provided with a graduated line (3) scale so that beams (5) from the grading lines (3) of the scale can pass through the interface at the interior wall of the vessel at 10 empty vessel, whereby the grading ladders (3) are visible from the vessel's opening while the said rays are totally reflected