| 摘要 |
A two-stage absorption refrigerating machine comprises a low-temperature evaporator, a low-temperature absorber, a high-temperature evaporator, and a high-temperature absorber which are disposed adjacent to each other in that order within a drum body (10), and the high-temperature evaporator and the low-temperature absorber are arranged with a heat transfer section (8) provided therebetween. Heat absorbed by the low-temperature absorber is transmitted through the heat transfer section to a refrigerant flowing through the heat transfer section of the high-temperature evaporator. The heat transfer section is provided with: tube-shaped heat transfer surface bodies (81) each having one end open and the other end closed; and a closure plate (82) having openings (82a), and the heat transfer surface bodies are welded to the closure plate in such a manner that the openings of the heat transfer surface bodies are located at the positions of the openings of the closure plate. The closure plate of the heat transfer section is affixed to the drum body. The high-temperature evaporator, for example, is disposed on the inner side of the tube-shaped heat transfer surface bodies of the heat transfer section. The low-temperature absorber, for example, is disposed on the outer side of the heat transfer surface bodies. A refrigerant diffusion device is disposed above the heat transfer surface bodies at a position on the high-temperature evaporator side, and a solution diffusion device is disposed on the low-temperature absorber side. |
