CS240508B1

CS240508B1 - Apparatus for compensating for changes in body weight when partially immersed in a liquid

Info

Publication number: CS240508B1
Application number: CS295783A
Authority: CS
Inventors: Vratislav Balas; Marian Collak; Jan Bilik
Original assignee: Vratislav Balas; Marian Collak; Jan Bilik
Priority date: 1983-04-27
Filing date: 1983-04-27
Publication date: 1986-02-13

Abstract

Riešenie popisuje automatickú kompenzáciu změny váhy zvonu u zvonového spirometra s vodným uzáverom, kde změna váhy pri čiastočnom ponoření sa riadi podía Archimedovho zákona. Podstatou zariadenia je systém kladiek a závaží. Na jednom konci lanka je připojený zvon spirometra ponořeného vo- vodnom uzávere s kvapalinou. Zvon je opatřený vývodom vzduchu s vdychov-ým ústím. Lanko vedené systémom kladiek na kladku opatřenu vačkou s vodiacou spirálou je ukončené závažím. Na střed vačky s vodiacou spirálou, ktorá je zároveň stredom kladky je napojené lanko s vyvažovacím závažím. Riešenie je možné využit pri výrobě spirometra, ale aj všade tam, kde je potřebné p-resné vyv-áženie v celom rozsahu ponoru.The solution describes the automatic compensation of the change in the weight of the bell in a bell spirometer with a water seal, where the change in weight during partial immersion is governed by Archimedes' law. The essence of the device is a system of pulleys and weights. At one end of the cable is connected the bell of the spirometer immersed in the inlet seal with liquid. The bell is equipped with an air outlet with an inhalation mouth. The cable guided by the pulley system to a pulley equipped with a cam with a guiding spiral is terminated by a weight. A cable with a balancing weight is connected to the center of the cam with a guiding spiral, which is also the center of the pulley. The solution can be used in the production of a spirometer, but also wherever precise balancing is required throughout the entire immersion range.

Description

Vynález rieši automatická kompenzáciu změny hmotnosti zvonu ηε příklad u zvonového spirometra s vodným uzáverom, kde změna váhy pri čiastočnom ponoření do· kvapaliny sa riadi podía Archimedovho zákona.The invention solves the automatic compensation of the change in the weight of the bell ηε by the example of a water-locked bell spirometer, where the change of weight under partial immersion in the liquid is governed by the Archimedes Act.

Doteraz známe prevedenie spirometrov spočívalo v tom, že změna polohy zvonu vo vodnom uzávere viedla ku zmene odporu celého prístroja proti výdychu vyšetrovanej osoby a tým i k nepravdivému výsledku merania. Volbou tenších stien zvonu sa sice znižoval objem ponorenej časti, ale v dósledku týchto zmien sa zvon často deformoval, čím sa skreslovali i namerané hodnoty.The spirometers known up to now have consisted in the fact that the change of the bell position in the water seal has led to a change in the resistance of the whole device against the expulsion of the examined person and thus to the false measurement result. Though the thinner wall of the bell has reduced the volume of the submerged part, but as a result of these changes, the bell has often been distorted, thereby distorting the measured values.

Popísané nevýhody sú odstránené zariadením pre kompenzáciu změny váhy telesa pri čiastočnom ponoření do kvapaliný, ktorého podstata je v systéme kladiek a závaží. Na jednom konci lanka je připojený zvon spirometra ponořeného vo vodnom uzávere s kvapalinou. Zvon je opatřený vývodom vzduchu a vdychovým ústím. Lanko vedené systémom kladiek na kladku opatrenú vačkou s vodiacou Spirálou je ukončené závažím. Na střed vačky s vodiacou spirálou, ktorý je zároveň stredom kladky je napojené lanko s vyvažovacím závažím.The disadvantages described are eliminated by the device for compensating for the change in body weight when partially immersed in the liquid, the principle of which is in the pulley and weight system. A bell of the spirometer immersed in the water seal with the liquid is attached at one end of the cable. The bell is equipped with an air outlet and an air inlet. A rope guided by a pulley system to a cam with a cam with a spiral is terminated by a weight. On the center of the cam with the guide spiral, which is also the center of the pulley, is a cable with a balancing weight.

Zariadením pre kompenzáciu změny hmotnosti telesa so změnou síúpania Archimedovej špirály sa pri čiastočnom ponoření zvonu do kvapaliny dosiahne vyváženia v celom rozsahu zdvihu i pri vačšej hrúbke steny a rovnaký odpor proti výdychu vyšetrovanej osoby. Tvar vodiacej špirály vzhladom k osi upevnenia zaručuje změnu ramena sily vyvažovanej vyvažovacím záva- žím upevnenom na lanku vyvažovacieho' závažia vedeného v drážke vačky s vodiacou spirálou tak, že prírastok manometra sily je rovnaký ako prírastok váhy zvonu spirometra. Příklad prevedenia spirometra znázorňuje připojený výkres.The device to compensate for the change in body weight with the change of the Archimede's spiraling, with partial immersion of the bell in the liquid, achieves balancing over the entire stroke range, even at higher wall thicknesses and the same resistance to exhalation by the person being examined. The shape of the guide spiral with respect to the mounting axis guarantees a change in the force arm balanced by the balancing weight attached to the balancing weight cable guided in the cam groove with the guide spiral so that the force gauge increment is the same as the spirometer bell weight gain. An example of a spirometer embodiment is shown in the accompanying drawing.

Zvon 9 spirometra je ponořený do uzávěru 8 s kvapalinou 12, pričom jeho maximálny, alebo· minimálny ponor udává závažie 2. Uzávěr 8 s kvapalinou 12 je opatřený vdychovým ústím 7 a vývodom vzduchu 13. Od zvonu 9 spirometra je cez 1'avú kladku 10 a pravú kladku 14 spodnú kladku 1 vedené lanko 6 na kladku 5, ktorá je opatřená na čelnej straně vodiacou špirálou 4 á jej začiatok na osi kladky 5. Jeden koniec lanka 11 vyvažovacieho závažia je uchytený na vačke 4 s vodiacou špirálou a druhý koniec toho istého lanka nesie vyvažovacie závažie 3. · ?The spirometer bell 9 is immersed in the liquid closure 8, the maximum or minimum immersion being indicated by the weight 2. The closure 8 with the liquid 12 is provided with an inhalation mouth 7 and an air outlet 13. From the bell 9 of the spirometer it is through the left roller 10 and a right roller 14 a lower pulley 1 guided by a cable 6 to a pulley 5 which is provided on the front side with a guide spiral 4 and a beginning thereof on the axis of the pulley 5. One end of the balancing weight cable 11 is attached to the cam 4 with the guide spiral and the other end of the same the cables carry a balancing weight 3. ·?

Objem vzduchu plúc vyšetrovanej _ osoby vedený cez ústie 7 vdychu uvedie do pohybu zvon 9 spirometra vo vodnom uzávere 8. Pohyb zvonu 9 spirometra prostredníctvom lanka 6 a lanka 11 vyvažovacieho' závažia meni lineárně rameno sily od osi kladky 5, na ktorú posobí vyvažovacie žávažie 3 uchytené na vačke 4 s vodiacou špirálou. Pósobením vyvažovacieho závažia 3 uchyteného na lanku 11 vyvažovacieho závažia, ktoré je vedené po vačke 4 s vodiacou špirálou na kladke 5, narastá moment sily pri pohybe zvonu 9 spirometra.The air volume of the lungs of the person being examined through the inhalation mouth 7 triggers the spirometer bell 9 in the water seal 8. Movement of the spirometer bell 9 by the cable 6 and the balancing weight cable 11 varies linearly the force arm from the pulley axis 5 to which the balancing weight 3 is placed attached to cam 4 with a guide spiral. By acting the balancing weight 3 attached to the balancing weight cable 11, which is guided by the cam 4 with the guide spiral on the pulley 5, the force of the movement of the bell 9 of the spirometer increases.

Zariadenie podlá vynálezu je možné s popísanými výhodami využit pri výrobě spirometra, ale aj všade tam, kde sa vyžaduje přesné vyváženie v celom rozsahu ponoru.The device according to the invention can be used with the described advantages in the manufacture of a spirometer, but also where precision balancing is required throughout the entire range of the dive.

Claims

SUBJECT

Apparatus for compensating for a change in body weight when partially immersed in a liquid formed from a bell, pulley and weight system, characterized in that the cable (6) is connected at one end to the bell (9) of the spirometer immersed in the water seal (8) with the liquid (12); which is provided with an air outlet (13) and an inhalation orifice (7) and is guided via the left pulley (10), the LAW pulley (14), the lower pulley (1), the pulley (5), which in turn is provided with a cam (4) A guide spiral carries a weight (2) at the other end, wherein a center weight (3) is connected to the center of the guide spiral cam (4) which is also the center of the pulley (5) by means of a balancing weight cable (11).