Temperature compensation system for regulating flow through...

F - Mech Eng,Light,Heat,Weapons – 04 – B

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F04B 43/08 (2006.01) F04B 43/12 (2006.01) F04B 49/20 (2006.01) G05D 7/06 (2006.01)

Patent

CA 2292660

A peristaltic pump is provided with a housing, a pump head in the housing, and a receiving path defined along a housing and pump head for receiving tubing. Two spaced-apart temperature sensors are provided. One temperature sensor is located adjacent the tubing in a heat conduction path along which heat flows between the sensor and the tubing. The other sensor is located outside of the heat conduction path for sensing ambient temperature. The pump operating speed is adjusted as a function of the sensed temperatures. This accommodates the temperature-dependent rate of recovery of the tubing from its peristaltically deformed configuration to its original configuration.

On décrit une pompe péristaltique qui comprend un corps, un refoulement dans le corps, une voie de réception délimitée le long d'un corps et d'un refoulement pour recevoir le conduit, et deux capteurs thermiques espacés l'un de l'autre. L'un des capteurs thermiques jouxte le conduit placé dans une voie de conduction thermique le long de laquelle circule la chaleur entre le capteur et le conduit. L'autre capteur est placé à l'extérieur de la voie de conduction thermique pour détecter la température ambiante. La vitesse de fonctionnement de la pompe est réglée en fonction de la température détectée. Ainsi, le taux de récupération du conduit, qui est tributaire de la température, peut être régulé pour passer de la configuration péristaltiquement déformée à la configuration d'origine.

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