Patent ID: 7398656

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 diluted solution from the absorber; a low-temperature heat exchanger performing heat exchange between the concentrated solution sent from the auxiliary regenerator to the absorber and the diluted solution sent from the auxiliary absorber to the regenerator; a high-temperature heat exchanger heating the diluted solution leaving the low-temperature heat exchanger and sent to the regenerator with the concentrated solution sent from the regenerator to the auxiliary regenerator.