Abstract A self-sterilizing liquid mixer system is provided for the preparation of a mixture of a carrier liquid and a concentrate, particularly for the production of a dialysis liquid for a dialyser, connected to the mixture outlet conduit of said system, a return conduit receiving used liquid mixture from the dialyser to be discharged from the system through a discharge outlet. In the inlet conduit of the carrier liquid, series connected heating and outgasing means are provided normally operative to heat said carrier liquid close to its boiling point and subsequently outgasing the same through a gas outlet to the atmosphere. For the sterilizing of the system after an inoperative period the supplies of the carrier liquid and the concentrate are cut off, while said inlet conduit of the carrier liquid is connected with the discharge outlet, and said mixture outlet conduit is connected to the return conduit, simultaneously pressure dependently closing the gas outlet by means of a loaded closure. These measures enable a closed circulation of the liquid present in the system and a heating of the circulating liquid by means of said heating means to a selected sterilizing temperature well above said boiling point and determined by the pressure dependent, loaded closure of the gas outlet.
Self-sterilizing liquid mixer system comprising first and second inlet conduits for respectively supplying a first and a second liquid to a mixing device, series connected heating and outgasing means in said first inlet conduit, and which normally are operative to heat the first liquid close to its boiling point and subsequently outgasing the same through a gas outlet to the atmosphere, an outlet conduit from said mixing device and connectable to an apparatus utilizing the prepared liquid mixture, and a return conduit operative to receive used liquid mixture from said apparatus and to discharge the same through a discharge outlet, the system further comprising means for, after cutting of the supplies of said first and second liquid, respectively interconnecting the inlet conduit of the first liquid and the discharge outlet, and the outlet conduit of the mixing device and the return conduit, and simultaneously pressure-dependently closing the gas outlet, in order to enable closed liquid circulation through the system and heating of the circulating liquid by means of said heating means to a selected sterilizing temperature well above said boiling point and determined by said pressure dependent closing.
Claim 2
Dependent Claim
188 words
Self-sterilizing liquid mixer system comprising first and second inlet conduits for respectively supplying a first and a second liquid to a mixing device, series connected heating and outgasing means in said first inlet conduit, and which normally are operative to heat the first liquid close to its boiling point and subsequently outgasing the same through a gas outlet to the atmosphere, an outlet conduit from said mixing device and connectable to an apparatus utilizing the prepared liquid mixture, and a return conduit operative to receive used liquid mixture from said apparatus and to discharge the same through a discharge outlet, the system further comprising means for, after cutting of the supplies of said first and second liquid, respectively interconnecting the inlet conduit of the first liquid and the discharge outlet, and the outlet conduit of the mixing device and the return conduit, and simultaneously pressure-dependently closing the gas outlet, in order to enable closed liquid circulation through the system and heating of the circulating liquid by means of said heating means to a selected sterilizing temperature well above said boiling point and determined by said pressure dependent closing.