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US 6,253,571 B1Granted
Liquid distributor, falling film heat exchanger and absorption refrigeration
AssigneeHitachi, Ltd.
InventorsTatsuo Fujii, Satoshi Miyake, Takehiro Sato
Life of this patent
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AssigneeHitachi, Ltd.
InventorsTatsuo Fujii, Satoshi Miyake, Takehiro Sato
Estimating the term…
A liquid distributor, a falling film heat exchanger and an absorption refrigerating machine, which are inexpensive and favorably ensure uniform distribution of a liquid even in the case where the liquid distributor is installed in oblique position and foreign matters such as metal particles or the like are mixed in the liquid. The liquid distributor comprise a primary distribution duct of box-shaped cross section having an opening serving as a liquid inlet, and distribution holes serving as liquid outlets and formed on side surfaces of the primary distribution duct, and a group of box-shaped secondary distribution trays spaced from outer side surface and lower side surface of the primary distribution duct, and formed to be compartmented into a plurality of regions in a longitudinal direction of the primary distribution duct. Liquid dripping holes, through which the liquid is dropped, are formed in bottom surfaces of the secondary distribution trays. The liquid distributor is incorporated in falling film heat exchangers or absorption refrigerating machines.
In a liquid distributor for distributing and sprinkling a liquid, which involves phase change in heat exchanging process, onto banks of heat exchanger tubes from above, the improvement comprising a closed primary distribution duct having an inlet and being formed with a plurality of distribution holes, which serve as liquid outlets and serve to distribute the liquid and which are aligned lengthwise of the duct, said closed primary distribution duct being closed except for said inlet and said plurality of distribution holes;
In a falling film heat exchanger comprising banks of heat exchanger tubes for effecting heat exchange inside and outside thereof, and a liquid distributor for distributing and sprinkling a heat exchanging medium from above the heat exchanger tubes, which constitute the banks, said heat exchanging medium being adapted to flow down by gravity to form liquid films on outer wall surfaces of the heat exchanger tubes to make heat exchange with the heat exchanging medium, which flows in the tubes, the improvement wherein said liquid distributor comprises a closed primary distribution duct having an inlet and being formed with a plurality of distribution holes, which serve as liquid outlets and serve to distribute the liquid and which are aligned lengthwise of the duct, said closed primary distribution duct being closed except for said inlet and said plurality of distribution holes;
In a falling film heat exchanger comprising banks of heat exchanger tubes for effecting heat exchange inside and outside thereof, and a liquid distributor for distributing and sprinkling a heat exchanging medium from above the heat exchanger tubes, which constitute the banks, said heat exchanging medium being adapted to flow down by gravity to form liquid films on outer wall surfaces of the heat exchanger tubes to make heat exchange with the heat exchanging medium, which flows in the tubes, the improvement wherein said liquid distributor comprises a primary distribution duct formed with a plurality of distribution holes, which serve as liquid outlets and serve to distribute the liquid and which are aligned lengthwise of the duct;
In a single-effect absorption refrigerating machine including an evaporator, an absorber, a regenerator, liquid distributors, which are incorporated into the evaporator, the absorber and the regenerators to distribute and sprinkle a heat exchanging medium from above heat exchanger tubes incorporated into the regenerator to effect heat exchange inside and outside of the heat exchanger tubes, and a condenser, the improvement wherein said liquid distributor comprises a primary distribution duct formed with a plurality of distribution holes, which serve as liquid outlets and serve to distribute the liquid and which are aligned lengthwise of the duct;
A multi-effect absorption refrigerating machine including an evaporator, an absorber, a high temperature regenerator, a low temperature regenerator, liquid distributors, which are incorporated into the evaporator, the absorber and the regenerator to distribute and sprinkle a heat exchanging medium from above heat exchanger tubes incorporated into the low temperature regenerator to effect heat exchange inside and outside of the heat exchanger tubes, and a condenser, the improvement wherein said liquid distributor comprises a primary distribution duct formed with a plurality of distribution holes, which serve as liquid outlets and serve to distribute the liquid and which are aligned lengthwise of the duct;
A multi-effect absorption refrigerating machine including an evaporator, an absorber, a high temperature regenerator, a low temperature regenerator, liquid distributors, which are incorporated into the evaporator, the absorber and the regenerator to distribute and sprinkle a heat exchanging medium from above heat exchanger tubes incorporated into the low temperature regenerator to effect heat exchange inside and outside of the heat exchanger tubes, and a condenser, the improvement wherein said liquid distributor comprises a primary distribution duct formed with a plurality of distribution holes, which serve as liquid outlets and serve to distribute the liquid and which are aligned lengthwise of the duct;
Dependencies are inferred from the claim text.