EVAPORATOR AND FREEZING MACHINE

• Main Authors: AOKI YASUTAKA, KANEKO TAKESHI, YOSHII DAICHI
• Format: Patent
• Language: English; Japanese
• Published: 01.08.2019
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

To provide an evaporator which enables reduction of an amount of a refrigerant liquid held therein while inhibiting enlargement, and to provide a freezing machine.SOLUTION: An evaporator 2 includes a casing 5, a refrigerant supply part 7, a first heat transfer tube group 10, and a second heat transfer tube group 11. The casing 5 stores a refrigerant therein and has a discharge port for discharging the evaporated refrigerant to the outside. The refrigerant supply part 7 supplies the refrigerant from the outside from an upper part of a space in the casing 5. The first heat transfer tube group 10 is provided at a lower part of the space in the casing 5 so as to be immersed in the refrigerant and comprises multiple first heat transfer tubes 12 in which a cooled liquid flows. The second heat transfer tube group 11 is provided below the refrigerant supply part 7 and above a liquid surface of the refrigerant at the space in the casing 5 and comprises multiple second heat transfer pipes 13 in which the cooled liquid flows.SELECTED DRAWING: Figure 2 【課題】大型化を抑制しつつ、冷媒液の保有量を低減することが可能な蒸発器及び冷凍機を提供する。【解決手段】蒸発器２は、ケーシング５と、冷媒供給部７と、第一伝熱管群１０と、第二伝熱管群１１と、を備える。ケーシング５は、内部に冷媒が貯留されるとともに、蒸発した冷媒を外部に排出する排出口を有する。冷媒供給部７は、外部からの冷媒をケーシング５内の空間の上部から供給する。第一伝熱管群１０は、前記ケーシング５内の空間の下部に前記冷媒に浸漬するように設けられて、内部に被冷却液が流れる複数の第一伝熱管１２からなる。第二伝熱管群１１は、前記ケーシング５内の空間における前記冷媒供給部７よりも下方、かつ、前記冷媒の液面よりも上方に設けられて、内部に被冷却液が流れる複数の第二伝熱管１３からなる。【選択図】図２