自動消泡制御装置

概要

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The foam control apparatus with some arrangements has been established. These arragements which have been successful in fermentations having different foam characteristics are as follows.1) The electrode consists of a stainless steel bar with the lower end bar which is coated with wthylene trifluoride resin and inserted into the fermentor through a tefron stopper.2) The plate cover on the electrode is effective in keeping the inside of fermentor around it dry and in avoiding the possibility of the short circuit which may otherwise be made between the fermentor and the electrode caused by the spattering of broth during fermentation.3) A sparkless relay with a delayed relay plays an important role in minimizing excessive amount of defoamer which may otherwise be added in response to the trifling touch of foam with an electrode ; i.e. this device lets the operation be intiated after the foam is kept in contact with the electrode for exactly five seconds.4) An interval timer, which consists of a synchronous motor, two sets of different cams and micro switches, regulates the time of addition at an interval of thirty seconds in a five minutes period.5) The amount of antifoam agent delivered can be controlled by a needle valve in the antifoam line. Also, by operating a change-over switch, manual addition of antiformer is made possible.
社団法人日本生物工学会の論文
1962-03-15