DE2034097B2 - Respirometer airflow resistance chamber for pulmonary investigations - has differential pressure tube fitted with internal perforated baffles - Google Patents
Respirometer airflow resistance chamber for pulmonary investigations - has differential pressure tube fitted with internal perforated bafflesInfo
- Publication number
- DE2034097B2 DE2034097B2 DE19702034097 DE2034097A DE2034097B2 DE 2034097 B2 DE2034097 B2 DE 2034097B2 DE 19702034097 DE19702034097 DE 19702034097 DE 2034097 A DE2034097 A DE 2034097A DE 2034097 B2 DE2034097 B2 DE 2034097B2
- Authority
- DE
- Germany
- Prior art keywords
- flow
- grooves
- differential pressure
- corrugated
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/087—Measuring breath flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Pulmonology (AREA)
- General Physics & Mathematics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Heart & Thoracic Surgery (AREA)
- Physiology (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
Versuche unternommen, auch Fleisch'sche Düsen erlaubt es, die einzelnen Bleche und Einsätze jederzeit,Attempts have been made, also Fleisch'sche nozzles allow the individual sheets and inserts at any time,
weiter zu verbessern; die Verbesserungsversuche 65 beispielsweise zum Zwecke einer Reinigung, aus demto further improve; the improvement attempts 65, for example, for the purpose of cleaning, from the
richteten sich im wesentlichen auf die querschnittgemit- Strömungsrohr zu entfernen und anschließend wiederwere directed essentially to remove the cross-sectional mit- flow tube and then again
telte Druckabnahme, wo also der Druck nicht mehr wie einzusetzen. Außerdem ist es möglich, Bleche gegentelte pressure decrease, so where the pressure no longer how to use. It is also possible to counteract sheet metal
bei der ursprünglichen Fleisch'schen Düse nur an zwei Einsätze oder umgekehrt auszutauschen und damit aufwith the original Fleisch nozzle only to be exchanged on two inserts or vice versa and thus on
einfache Weise dtn Strömungswiderstand in seiner Größe zu variieren.easy way to vary the size of the flow resistance.
Anhand der Zeichnung sei ein Ausführungsbeispiel der Erfindung beschrieben und d>e Wirkungsweise erläutert.An exemplary embodiment is based on the drawing of the invention described and the mode of operation explained.
Die Fig. 1 und 2 zeigen im Seiten- und Aufriß teilweise im Schnitt ein Sirömungsrohr 1 mit zwei Ableitstutzen 2 und 3, an denen die Meßgröße abgencnmen und über nicht gezeichnete Leitungen auf ein geeignetes Differenzdruckmcnometer gegeben wird. In das Strömungsrohr 1 ist ein den Strömungswiderstand bildender Stapel aus abwechselnd aneinander geschichteten wellenartig geformten Blechen 4 und Blechteilen 5 und 6 angeordnet.1 and 2 show in side and elevation partially in section a Sirömungsrohr 1 with two Discharge nozzles 2 and 3, at which the measured variable is decreased and via lines not shown a suitable differential pressure meter is given. In the flow pipe 1 is a flow resistance forming stack of alternately stacked wave-like shaped sheets 4 and Sheet metal parts 5 and 6 arranged.
Wie anhand einer perspektivischen Darstellung in F i g. 3 ersichtlich ist, ist jedes Blechteil 6 mit zwei bis zu seinem Boden 9durchgehenden Nuten 7 und 8 versehen. Jede dieser Nuten 7 und 8 verläuft beim im Strömungsrohr angeordnetem Blechteil 6 achsparallel zu den Ableitstutzen 2 Mnd 3.As based on a perspective illustration in FIG. 3 can be seen, each sheet metal part 6 is with two up to its bottom 9 provided through grooves 7 and 8. Each of these grooves 7 and 8 runs in the Sheet metal part 6 arranged in the flow tube, axially parallel to the discharge nozzle 2 Mnd 3.
Sämtliche Nuten 7 sind über einen ersten Sammelkanal 10 mit dem Ableiisuitzen 2 und sämtliche Nuten 8 über einen Sammelkanal 11 mit dem Ableitstutzen 3 verbunden. An jedem Blechteil 5 und 6 sind dabei entlang den Nuten 7 und 8 in Abständen entsprechend der Wellänge der Wellbleche 4 Bohrungen 12 und 13 vergesehen, die die einzelnen an die BlechteUe 5 und 6 angrenzenden Querschnittsöffnungen 14 der Wellbleche 4 mit den einzelnen Nuten 7 bzw. 8 verbinden.All of the grooves 7 are through a first collecting channel 10 with the Ableiisuitzen 2 and all the grooves 8 via a collecting duct 11 with the discharge nozzle 3 tied together. On each sheet metal part 5 and 6 are along the grooves 7 and 8 at intervals accordingly the shaft length of the corrugated sheets 4 holes 12 and 13 provided, which the individual to the sheet metal sheets 5 and 6 connect adjacent cross-sectional openings 14 of the corrugated metal sheets 4 with the individual grooves 7 and 8, respectively.
Das Strömungsrohr 1 kann aus Metall oder auch aus Kunststoff bestehen. Entsprechend können auch die Teile 4,5,6 aus Metall oder Kunststoff geformt sein. Die Kunststoff-Ausführung hat gegenüber der Metall-Ausführung den Vorteil der Leichtigkeit, ist jedoch schwierig zu beheizen, da ihr Wärmeleitvermögen gering ist.The flow tube 1 can be made of metal or plastic. The Parts 4,5,6 be molded from metal or plastic. the The plastic version has the advantage of lightness over the metal version, but it is difficult to heat because of its low thermal conductivity.
Eine metallische Ausführung hat außerdem den Vorteil, daß die Beheizung, beispielsweise durch Anlegen von geeigneten Heizkörpern an die Außenwandungen des Strömungsrohres, von außen erfolgen kann; auf stromgespeiste Heizwicklungen im Innern des Rohres — wie sie /. B. bei den Rezeptoren nach Fleisch erforderlich sind — kann also verzichtet werden. Dadurch läßt sich auch ohne Schwierigkeiten eine Heißsterilisation durchführen.A metallic design also has the advantage that the heating can take place from the outside, for example by applying suitable heating elements to the outer walls of the flow pipe; on powered heating coils inside the pipe - like them /. B. are required for the receptors of meat - can therefore be dispensed with. As a result, hot sterilization can also be carried out without difficulty.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702034097 DE2034097C3 (en) | 1970-07-09 | Flow meter, especially respiratory flow receptor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702034097 DE2034097C3 (en) | 1970-07-09 | Flow meter, especially respiratory flow receptor |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2034097A1 DE2034097A1 (en) | 1972-01-20 |
DE2034097B2 true DE2034097B2 (en) | 1976-10-21 |
DE2034097C3 DE2034097C3 (en) | 1977-06-16 |
Family
ID=
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3020265A1 (en) * | 1979-05-29 | 1981-01-22 | Research Dev Corp | PNEUMOTACHOGRAPH |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3020265A1 (en) * | 1979-05-29 | 1981-01-22 | Research Dev Corp | PNEUMOTACHOGRAPH |
Also Published As
Publication number | Publication date |
---|---|
DE2034097A1 (en) | 1972-01-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 | ||
EGA | New person/name/address of the applicant | ||
8339 | Ceased/non-payment of the annual fee |