PROBLEM TO BE SOLVED: To perform water saving and energy saving by incorporating a heat pump apparatus in a pasteurizer, and to prevent the generation of a temperature variation of treatment water at non-loading when a container is not carried into a treatment region, and to prevent the insufficient sterilization and the deterioration of liquid in the container.SOLUTION: In the pasteurizer 10A, the heat pump apparatus 50 which feeds a part of a heat sink and a heat source is installed includes: heat exchangers 62 and 64 for pseudo loading which adjust the temperature of the treatment water b a brine circulation passage 66 which circulates a brine between the heat exchangers for pseudo loading and a cooling tower 68 which is interposed in the brine circulation passage 66. When the container unloading state that the container w containing the liquid such as a beverage is not carried into a pasteurization tub 14a or a slow cooling tub 16a is detected by a temperature sensor 25, the operation of the heat exchangers 62 and 64 for pseudo loading, or the cooling tower 68 is controlled by a controller 80, and the temperature of the processing water b which is jetted to each processing tub is held at a set temperature.COPYRIGHT: (C)2012,JPO&INPIT【課題】パストライザにヒートポンプ装置を組み込んで省水、省エネを実現すると共に、処理領域に容器が搬入されない無負荷時に、処理水の温度変動を防止し、容器内液体の殺菌未了や変質を防止する。【解決手段】パストライザ10Aに冷熱源及び温熱源の一部を供給するヒートポンプ装置50が設けられている。また、処理水bの温度を調節する擬似負荷用熱交換器62及び64と、該擬似負荷用熱交換器間にブラインを循環するブライン循環路66と、ブライン循環路66に介設された冷却塔68とを備えている。殺菌槽14a又は徐冷槽16aに飲料等の液体が入った容器wが搬入されない容器無負荷状態を温度センサ25で検出した時、コントローラ80で擬似負荷用熱交換器62,64又は冷却塔68の作動を制御し、各処理槽に噴射される処理水bの温度を設定温度に保持する。【選択図】図1
