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4778004 Heat exchanger assembly with integral fin unit
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New Patents
4777682 INTEGRAL WATER AND HEAT RECLAIM SYSTEM FOR A WASHING MACHINE Adolph E S Dreher, Donald J Edmundson assigned to Washex Machinery Corporation An industrial laundry washer/extractor unit is provided with an integral water and heat reclaim system which includes a pair of water reclaim tanks supported in an elevated position on the unit's body section above the washing drum. A single pipe water transfer system is connected between the elevated tanks and the drum and has a pump operatively installed therein at or somewhat below the water operating level of the drum. The transfer system is controlled by a microprocessor to transfer used rinse water at different temperatures from the drum to the tanks and then re-transfer tank water to the drum for re-use as wash water in subsequent wash cycles of the unit. The temperatures of the reclaimed rinse water in the tanks closely match the wash temperatures in subsequent wash cycles so that a significant water heating cost savings is achieved together with reduced water and cleaning agent usage. Because the reclaim system is an integral part of the unit, and the tanks are supported in an elevated position, no additional floor space is required beyond that needed for the unit without the reclaim system.
4777805 HEAT PUMP SYSTEM Kenichi Hashizume, Tokyo, Japan assigned to Kabushiki Kaisha Toshiba A process and apparatus for a multistage heat pump system. The system includes a compressor which compreses a working medium, a condenser which condenses the working medium, and an evaporator which evaporates the working medium, and has a construction in which at least either one of the condenser or the evaporator includes a plurality of heat exchange chambers, at least either one of the delivery side or the suction side of the compressor including a plurality of ports that are on different pressure levels, the plurality of heat exchange chambers and the plurality of ports being connected to each other. A cascade system is also disclosed, in which two working mediums are used, one for a high-temperature cycle and one for a low-
temperature cycle. The cascade heat exchanger can be single or multistage. The above construction allows the temperature of the working medium to vary along with the temperature variations of a heat source fluid. Because of this, it becomes possible to restrain irreversible energy losses, and achieve a marked improvement in performance.
4778001 HEAT EXCHANGE METHOD AND APPARATUS Colin M Reed, Manchester, United Kingdom assigned to Shirley Institute There is disclosed a method and apparatus for exchanging heat between a first fluid and a second fluid immiscible with said first fluid comI~rising the step of presenting one of said fluids in finely divided form for direct contact with the others. One fluid may be a molten metal which is sprayed or bubbled through the other.
4778003 HEAT EXCHANGER WITH NOVEL SEAL FOR TUBE SHEET Gunnar I Helberg assigned to The Dow Chemical Company A novel construction of a heat exchanger such as a vertical type thermosiphon reboiler having a removable tube bundle and optional removable shell is disclosed. The inlet tube sheet is matingly, engagably secured to a ledge portion which is, in turn, secured to one flange of the shell and the opposite tube sheet is matingly, engagably secured to the opposite flange of the shell. Sealing members are more favorably located in such construction. The assembly is easily disassembled for cleaning.
4778004 HEAT EXCHANGER ASSEMBLY WITH INTEGRAL FIN UNIT Roge Paulman, Franz X Wohrstein assigned to Peerless of America Incorporated A heat exchanger assembly of the side-entry cross-fin type includes first and second integral
New Patents
fin units, each comprising a single sheet of material provided with a plurality of aligned apertures, the sheet of material being folded in aecordian-fashion such that the apertures define a plurality of notches arranged in rows which extend longitudinally of the fin unit. Two of the fin units are assembled together with a single length of heat exchange tube which threads the notches of the fin units, the tube extending over an ovalshaped helical path through the two fin units. In another embodiment, a single folded fin unit is provided with notches in fins on its upper and lower surface, a single length of tube being wrapped around the single fin unit threading the apertures therein, the tube extending in a generally oval-shaped helix path.
v
ting furnace, means for venting gases and gasborne particulate matter from the drum, means for separating a selected portion of the particulate matter from the vented gases, and means for directing the separated particulate matter into the glass melting furnace.
4778566 ENERGY-SAVING CIRCUIT FOR CONTINUOUSLY OPERATED DISTILLATION UNITS Peter Vinz, D 8000 Mfederal Republic Of Germana
4778005 BAFFLE SEAL FOR SHEEL AND TUBE HEAT EXCHANGERS Hosea Smith assigned to Exxon Research and Engineering Company This invention relates to shell and tube heat exchangers and similar equipment and is particularly concerned with an improved arrangement for sealing the longitudinal edges of the pass baffle with the inner wall of the shell in such a manner as to prevent fluid leaks through that juncture which have the effect of bypassing the heat exchanger. The invention also relates to an improved tube bundle design wherein an aligned notch or indentation is provided in each of the tube bundle cross baffles adjacent the longitudinal edges of the pass baffle to yield a measure of protection for the edge of the pass baffle when the bundle is removed from the shell for maintenance purposes and to an optimized tube bundle configuration which may be readily reversed or rotated to extend its service life.
4778503 METHOD AND APPARATUS FOR PREHEATING GLASS BATCH Mark A Propster, Charles M Hohman, Stephen Seng assigned to Owens-Corning Fiberglas Corporation A method and apparatus for preheating particulate glass batch comprises a rotatable drum for mixing batch with heat transfer media in a heat transfer relationship, means for directing the heated batch from the container to a glass mel-
The invention consists of an energy-saving circuit for rectification columns in continuously operated distillation plants and various embodiments 6f this circuit. Both the total dephlemation heat and the total waste heat of the depleted solution stream can be simultaneously utilized for preheating enriched initial solution by using this circuit, over a wide range of separations. This heat recovery is possible using a parallelflow dephlegmator whose vapor sides are connected in parallel to the rectification column enrichment section and which is preferably cooled by a portion of the cold enriched initial solution stream. From a partial stream of the vapor mixture existing at the beginning of the rectification column stripping section, product vapor of the required purity and condensate reflux for the vapor side of the unloaded column enrichment section are obtained simultaneously, in this manner.
4778653 METHOD FOR PREVENTING BIOFOULING OF SURFACES IN CONTACT WITH SEA WATER Kazuo Kamimura, Michio Araki, Kure, Japan assigned to Agency of Industrial Science and Technology The invention provides a novel and efficient method for preventing biofouling on the surface of a solid body continuously in contact with bacteria-containing sea water, such as the heat transfer surface in a heat exchanger using sea water as the cooling medium, caused by the attachment of the proliferated bacteria. The method comprises adding bacteriophages capable of lysing the bacteria responsible for the
New Patents
4777682 INTEGRAL WATER AND HEAT RECLAIM SYSTEM FOR A WASHING MACHINE Adolph E S Dreher, Donald J Edmundson assigned to Washex Machinery Corporation An industrial laundry washer/extractor unit is provided with an integral water and heat reclaim system which includes a pair of water reclaim tanks supported in an elevated position on the unit's body section above the washing drum. A single pipe water transfer system is connected between the elevated tanks and the drum and has a pump operatively installed therein at or somewhat below the water operating level of the drum. The transfer system is controlled by a microprocessor to transfer used rinse water at different temperatures from the drum to the tanks and then re-transfer tank water to the drum for re-use as wash water in subsequent wash cycles of the unit. The temperatures of the reclaimed rinse water in the tanks closely match the wash temperatures in subsequent wash cycles so that a significant water heating cost savings is achieved together with reduced water and cleaning agent usage. Because the reclaim system is an integral part of the unit, and the tanks are supported in an elevated position, no additional floor space is required beyond that needed for the unit without the reclaim system.
4777805 HEAT PUMP SYSTEM Kenichi Hashizume, Tokyo, Japan assigned to Kabushiki Kaisha Toshiba A process and apparatus for a multistage heat pump system. The system includes a compressor which compreses a working medium, a condenser which condenses the working medium, and an evaporator which evaporates the working medium, and has a construction in which at least either one of the condenser or the evaporator includes a plurality of heat exchange chambers, at least either one of the delivery side or the suction side of the compressor including a plurality of ports that are on different pressure levels, the plurality of heat exchange chambers and the plurality of ports being connected to each other. A cascade system is also disclosed, in which two working mediums are used, one for a high-temperature cycle and one for a low-
temperature cycle. The cascade heat exchanger can be single or multistage. The above construction allows the temperature of the working medium to vary along with the temperature variations of a heat source fluid. Because of this, it becomes possible to restrain irreversible energy losses, and achieve a marked improvement in performance.
4778001 HEAT EXCHANGE METHOD AND APPARATUS Colin M Reed, Manchester, United Kingdom assigned to Shirley Institute There is disclosed a method and apparatus for exchanging heat between a first fluid and a second fluid immiscible with said first fluid comI~rising the step of presenting one of said fluids in finely divided form for direct contact with the others. One fluid may be a molten metal which is sprayed or bubbled through the other.
4778003 HEAT EXCHANGER WITH NOVEL SEAL FOR TUBE SHEET Gunnar I Helberg assigned to The Dow Chemical Company A novel construction of a heat exchanger such as a vertical type thermosiphon reboiler having a removable tube bundle and optional removable shell is disclosed. The inlet tube sheet is matingly, engagably secured to a ledge portion which is, in turn, secured to one flange of the shell and the opposite tube sheet is matingly, engagably secured to the opposite flange of the shell. Sealing members are more favorably located in such construction. The assembly is easily disassembled for cleaning.
4778004 HEAT EXCHANGER ASSEMBLY WITH INTEGRAL FIN UNIT Roge Paulman, Franz X Wohrstein assigned to Peerless of America Incorporated A heat exchanger assembly of the side-entry cross-fin type includes first and second integral
New Patents
fin units, each comprising a single sheet of material provided with a plurality of aligned apertures, the sheet of material being folded in aecordian-fashion such that the apertures define a plurality of notches arranged in rows which extend longitudinally of the fin unit. Two of the fin units are assembled together with a single length of heat exchange tube which threads the notches of the fin units, the tube extending over an ovalshaped helical path through the two fin units. In another embodiment, a single folded fin unit is provided with notches in fins on its upper and lower surface, a single length of tube being wrapped around the single fin unit threading the apertures therein, the tube extending in a generally oval-shaped helix path.
v
ting furnace, means for venting gases and gasborne particulate matter from the drum, means for separating a selected portion of the particulate matter from the vented gases, and means for directing the separated particulate matter into the glass melting furnace.
4778566 ENERGY-SAVING CIRCUIT FOR CONTINUOUSLY OPERATED DISTILLATION UNITS Peter Vinz, D 8000 Mfederal Republic Of Germana
4778005 BAFFLE SEAL FOR SHEEL AND TUBE HEAT EXCHANGERS Hosea Smith assigned to Exxon Research and Engineering Company This invention relates to shell and tube heat exchangers and similar equipment and is particularly concerned with an improved arrangement for sealing the longitudinal edges of the pass baffle with the inner wall of the shell in such a manner as to prevent fluid leaks through that juncture which have the effect of bypassing the heat exchanger. The invention also relates to an improved tube bundle design wherein an aligned notch or indentation is provided in each of the tube bundle cross baffles adjacent the longitudinal edges of the pass baffle to yield a measure of protection for the edge of the pass baffle when the bundle is removed from the shell for maintenance purposes and to an optimized tube bundle configuration which may be readily reversed or rotated to extend its service life.
4778503 METHOD AND APPARATUS FOR PREHEATING GLASS BATCH Mark A Propster, Charles M Hohman, Stephen Seng assigned to Owens-Corning Fiberglas Corporation A method and apparatus for preheating particulate glass batch comprises a rotatable drum for mixing batch with heat transfer media in a heat transfer relationship, means for directing the heated batch from the container to a glass mel-
The invention consists of an energy-saving circuit for rectification columns in continuously operated distillation plants and various embodiments 6f this circuit. Both the total dephlemation heat and the total waste heat of the depleted solution stream can be simultaneously utilized for preheating enriched initial solution by using this circuit, over a wide range of separations. This heat recovery is possible using a parallelflow dephlegmator whose vapor sides are connected in parallel to the rectification column enrichment section and which is preferably cooled by a portion of the cold enriched initial solution stream. From a partial stream of the vapor mixture existing at the beginning of the rectification column stripping section, product vapor of the required purity and condensate reflux for the vapor side of the unloaded column enrichment section are obtained simultaneously, in this manner.
4778653 METHOD FOR PREVENTING BIOFOULING OF SURFACES IN CONTACT WITH SEA WATER Kazuo Kamimura, Michio Araki, Kure, Japan assigned to Agency of Industrial Science and Technology The invention provides a novel and efficient method for preventing biofouling on the surface of a solid body continuously in contact with bacteria-containing sea water, such as the heat transfer surface in a heat exchanger using sea water as the cooling medium, caused by the attachment of the proliferated bacteria. The method comprises adding bacteriophages capable of lysing the bacteria responsible for the