Abstract: The invention relates to an apparatus (1) comprising a generator (5), an evaporator (6), an absorber (8) and a condenser (9) circulating a refrigerant (R), an inert (I) and an absorbent (A) in a diffusion-absorption cycle. The generator (5) and the evaporator (6) are arranged in an electric cabinet (2) to receive a heat load from primary electric components (3) and secondary electric components (4). The absorber (8) and the condenser (9) are arranged outside of the electric cabinet (2) and at a higher level than the evaporator (6) to receive fluid from the generator (5) and the evaporator (6) and for dissipating heat from the received fluid to the surrounding environment. The inert (I) and refrigerant (R) are selected such that the inert (I) is heavier than the refrigerant (R) in order to obtain fluid circulation where the inert (I) exiting the absorber (8) flows downwards to the evaporator (6) and the inert (I) exiting the evaporator (6) flows upwards to the absorber (8).
November 12, 2015
Date of Patent:
September 12, 2017
ABB Technology OY
Mathieu Habert, Bruno Agostini, Francesco Agostini
Abstract: An absorption heat pump including a generator or desorber which generates vapour from a first fluid fed to a first condenser, an evaporator provided downstream of the condenser, an outlet of the evaporator connected by a third line to an inlet of a mixer of a low pressure absorber connected to a suction side of a pump feeding solution to the generator. The generator having a poor solution outlet connected by a sixth line provided with at least one lamination valve to a poor solution inlet feeding the absorber. The second line is brought into heat exchange contact with the low pressure absorber and opens into a liquid/vapour separator feeding the evaporator via a third line, the vapour outlet of the separator opening into an intermediate pressure absorber unit.
Abstract: An absorption refrigerating system for use with refrigerant and inert auxiliary gas. The system includes a generator, a condenser, an evaporator structure and an absorber in circuit with each other. The evaporator structure is arranged to effect a two-stage precooling operation including precooling of the incoming weak auxiliary gas and liquid refrigerant, utilizing for the final precooling of the gas evaporation of a part of the refrigerant into a small partial stream of weak gas and to effect final precooling of the liquid refrigerant by leading it in contracurrent to the gas through a flat evaporator coil such as utilized for cooling the freezer compartment of a refrigerator.
Abstract: A simplified refrigeration apparatus in which the evaporator part includes a straight, generally horizontal pipe system that is connected to a linear continuation forming a gas heat exchanger. The assembly is inserted in the cooling chamber of a refrigerator through an opening in the insulated refrigerator cabinet. The gas heat exchanger is positioned within said insulation while the evaporator part is projected into the interior of the cooling chamber. The assembly permits the easy removal from the refrigerator cabinet, when desired, and is of compact construction lending itself to requirements of a small refrigerator.