Patent ID: 7827821

Claim:
An absorption refrigerating machine comprising: a regenerator generating refrigerant vapor and concentrating a solution; a condenser condensing the generated refrigerant vapor; an evaporator evaporating the condensed refrigerant; an absorber absorbing the evaporated refrigerant vapor into the solution; an auxiliary regenerator heating the concentrated solution from the regenerator, generating the refrigerant vapor and further concentrating the solution; an auxiliary absorber absorbing the refrigerant vapor generated in the auxiliary regenerator while cooling a first and a second diluted solutions, the auxiliary absorber utilizes a portion of a diluted solution mixture made of the second diluted solution from an absorber outlet and the first diluted solution from an auxiliary absorber outlet; a path for sending the remainder of the diluted solution mixture to the regenerator; a low-temperature heat exchanger heating the diluted solution mixture sequentially on the path with the concentrated solution supplied from the auxiliary regenerator to the absorber; and a high-temperature heat exchanger heating the diluted solution mixture leaving from the low-temperature heat exchanger and sent to the regenerator with the concentrated solution supplied from the regenerator to the auxiliary regenerator.