| 摘要 |
<p>A medium dispenser capable of preventing dripping of a solution and pulsating discharge causing variation of the quantity of dispensed medium and foams, and making it possible to reliably supply the medium at a suitable temperature while preventing local gelling of the medium and contamination with miscellaneous bacteria, wherein: a medium return tube (14) for returning the medium to a medium container (3) is connected to and branched from an intermediate part of a medium feed tube (11) acting as a medium flow passage for guiding the medium (2) from the medium container (3) to a nozzle (7) to allow the medium to circulate while it is kept warm at the time of non-dispensing, while the portion of the medium flow passage extending from the branching point of the medium return tube (14) at the medium feed tube (11) to the nozzle (7) is heated as a whole with auxiliary heating means (16); at the time of dispensing, a suitable quantity of the medium is supplied through throttle portions (50, 51) disposed at at least two positions of the tube (11) and having a diameter smaller than the diameter of the other portions of the passage; and a first stirrer (5a) inside the medium container (3) and a second stirrer (5b) inside a heating tank (6) are used to provide a uniform stirring and heat insulation inside the medium container.</p> |
