Patent ID: 11879670
Assignee: YAZAKI ENERGY SYSTEM CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B  Y | IPC B  F

Claim 0:
1. An absorption refrigerator configured to obtain a cold water by a circulation cycle of a regenerator, a condenser, an evaporator, and an absorber, the absorption refrigerator comprising:
a plurality of temperature sensors provided in the regenerator, the condenser, the evaporator, and the absorber;
a concentrated solution proportional valve configured to guide a concentrated solution obtained via regeneration in the regenerator to a lower part of the absorber without spraying the concentrated solution from an upper part of the absorber;
an anti-freeze valve configured to mix a diluted solution into a refrigerant sprayed from an upper part of the evaporator;
a storage storing an approximation function by which a second concentration of an absorption liquid is obtained, the approximation function being obtained in advance using a response surface method, based on a mass of data including: a plurality of first detection results obtained by each of the plurality of temperature sensors; and a plurality of first concentrations of the absorption liquid each corresponding to when each of the plurality of first detection results has been obtained;
a calculator configured to apply a plurality of second detection results obtained by each of the plurality of temperature sensors to the approximation function in order to obtain the second concentration of the absorption liquid; and
a controller configured to execute control in accordance with the second concentration obtained by the calculator to control an opening degree of the concentrated solution proportional valve and opening and closing of the anti-freeze valve.