To increase a piping-up temperature difference and to prevent leakage from a tube expanding section of a heat transfer tube in an absorption type refrigerating machine.
A low-temperature evaporator 17, a low-temperature absorber 11, a high-temperature evaporator 14 and a high-temperature absorber 6 are constituted of one can body 60. The low-temperature absorber 11 and the high-temperature evaporator 14 in which a plurality of the heat transfer tubes 16 are vertically disposed, disposed between the low-temperature evaporator 17 and the high-temperature absorber 6 in which the plurality of heat transfer tubes 19, 8 are horizontally disposed. A refrigerant liquid is supplied to each heat transfer tube from upper portions of the plurality of vertical heat transfer tubes 16. Can body both side faces over the low-temperature evaporator, the low-temperature absorber, the high-temperature evaporator and the high-temperature absorber are formed by using two sheets of first tube plates 50, 51. Both ends of the plurality of heat transfer tubes 19 of the low-temperature evaporator 17 and both ends of the plurality of heat transfer tubes 8 of the high-temperature absorber 6 are expanded and fixed to the two sheets of first tube plates 50, 51.
COPYRIGHT: (C)2010,JPO&INPIT
Tatsuro Fujii
Nobuyuki Takeda
Akira Nishiguchi
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