Patent ID: 8561423

Claim:
Absorption cooling device comprising: a generator for generating cooling fluid and absorbent fluid by separating a mixed fluid; a cooling fluid condenser, which is connected to the generator; a cooling fluid evaporator which is connected to the condenser by means of a cooling fluid supply conduit, the evaporator having at least one region for evaporation of the cooling fluid in which the cooling fluid supply conduit opens; a cooling fluid absorber which is connected to the evaporation region and which is connected to the generator by means of an absorbent fluid supply conduit and a mixed fluid discharge conduit; and a cooling circuit comprising a cooling fluid circulation conduit for circulation of cooling fluid which has an upstream inlet and a downstream outlet which are connected to the evaporation region, the cooling fluid circulation conduit comprising a reservoir of cooling fluid, a pump and a first heat-exchanger which are mounted in series, wherein the first heat-exchanger is arranged downstream of the reservoir of cooling fluid and mounted higher than the reservoir of cooling fluid so that cooling fluid in the first heat-exchanger is allowed to migrate into the reservoir by means of gravity when the pump is idle, wherein the pump is arranged between the reservoir of cooling fluid and the first heat-exchanger, wherein the cooling fluid circulation conduit is provided with (i) a controllable blocking valve which is arranged between the upstream inlet of the cooling fluid circulation conduit and the reservoir so as to limit filling of the reservoir and prevent evaporation of the cooling fluid from the reservoir toward the evaporator when the device is inactive, and (ii) a non-return valve which is arranged between the first heat-exchanger and the downstream outlet of the cooling fluid circulation conduit in order not to discharge the cooling fluid present in this portion of the conduit into the evaporator in the event of the pump stopping.