序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
161 Absorption heat-transfer system US10497222 2002-11-29 US07441589B2 2008-10-28 Michael A. Garrabrant; Roger E. Stout; Michael W. Klintworth, II; Eric Collet
A waste heat source (100) is used to heat a high temperature heat transfer fluid which is used to heat an absorption heat transfer machine (10) having a generator (20), an absorber (30), a condenser (40), and an evaporator (50) operatively connected together. The high temperature heat transfer fluid can also be used to heat a load (190) such as a room space or a process. The waste heat source (100) can also be used to heat an intermediate heat transfer fluid, which can be used to heat a second load (175) such as a space, a process, or an absorption heat transfer machine. Novel flow control devices (70, 60) for controlling the flow of weak solution from generator (20) to absorber (30) or of refrigerant from condenser (40) to evaporator (50), respectively, are also described.
162 Absorption chiller-heater US10772465 2004-02-06 US07143592B2 2006-12-05 Mitsuru Kodama; Takahide Sugiyama; Kazuhide Ishida
There is constructed a constitution including an exhaust heat fired regenerator constituting a heat source by exhaust heat from external machine generating the exhaust heat, a heat fluid flow path for making a fluid having the exhaust heat constituting the heat source or a fluid recovering the exhaust heat flow to the exhaust heat fired regenerator, flow path open/close device provided at the heat fluid flow path for controlling to make the heat fluid flow to the exhaust heat fired regenerator 1 and cut off the fluid therefrom by opening and closing the exhaust fluid flow path, first regenerator temperature detector for detecting temperature of the exhaust heat fired regenerator, a directly fired regenerator constituting a heat source by combustion heat of a burner, second regenerator temperature detector for detecting temperature of the directly fired regenerator, heat medium temperature detector for detecting temperature of a heat medium cooled or heated by an evaporator and controller for controlling to operate the flow path open/close device and the burner, in which a combustion amount of the burner can be increased and reduced and the controller controls to open and close the flow path open/close device and increase and reduce the combustion amount of the burner in accordance with the temperature of the heat medium detected by the heat medium temperature detector and a higher one of temperature of the temperature of the exhaust heat fired regenerator detected by the first regenerator temperature detector and the temperature of the directly fired regenerator detected by the second regenerator temperature detector.
163 Venting arrangement for a vehicle refrigerator and related method US10805510 2004-03-19 US07055335B2 2006-06-06 Jozef Hermanus van Leeuwen
A venting arrangement for a vehicle refrigerator including a lower vent assembly and an upper vent assembly. The lower vent assembly provides ventilation intake for cooling of refrigeration components. The upper vent assembly provides ventilation exhaust for cooling of refrigeration components. The venting arrangement further includes a flue exhaust tube assembly. The flue exhaust tube assembly causes the combustion exhaust gases to mix with the ventilation air prior to being exhausted near the upper vent assembly and away from the refrigerator components.
164 Absorption chiller-heater US10771434 2004-02-05 US06978633B2 2005-12-27 Takayuki Yamazaki
There is constructed a constitution including an exhaust gas fired regenerator constituting a heat source by exhaust gas from an external machine generating the exhaust gas, an introducing flow path for guiding the exhaust gas to the exhaust gas fired regenerator, an exhaust flow path for exhausting the exhaust gas from the exhaust gas fired regenerator, a bypass flow path branched from the introducing flow path, flow path switching device including a first damper provided at the introducing flow path and a second damper provided at the bypass flow path for switching flow of the exhaust gas to the introducing flow path and the bypass flow path, a damper provided at the exhaust flow path for cutting off the exhaust gas from flowing in the exhaust flow path and gas delivering device for blowing a gas to a portion of the exhaust flow path between the damper for cutting off the exhaust gas from flowing and the exhaust gas fired regenerator.
165 Absorption chiller-heater US10772465 2004-02-06 US20050188707A1 2005-09-01 Mitsuru Kodama; Takahide Sugiyama; Kazuhide Ishida
There is constructed a constitution including an exhaust heat fired regenerator constituting a heat source by exhaust heat from external machine generating the exhaust heat, a heat fluid flow path for making a fluid having the exhaust heat constituting the heat source or a fluid recovering the exhaust heat flow to the exhaust heat fired regenerator, flow path open/close device provided at the heat fluid flow path for controlling to make the heat fluid flow to the exhaust heat fired regenerator 1 and cut off the fluid therefrom by opening and closing the exhaust fluid flow path, first regenerator temperature detector for detecting temperature of the exhaust heat fired regenerator, a directly fired regenerator constituting a heat source by combustion heat of a burner, second regenerator temperature detector for detecting temperature of the directly fired regenerator, heat medium temperature detector for detecting temperature of a heat medium cooled or heated by an evaporator and controller for controlling to operate the flow path open/close device and the burner, in which a combustion amount of the burner can be increased and reduced and the controller controls to open and close the flow path open/close device and increase and reduce the combustion amount of the burner in accordance with the temperature of the heat medium detected by the heat medium temperature detector and a higher one of temperature of the temperature of the exhaust heat fired regenerator detected by the first regenerator temperature detector and the temperature of the directly fired regenerator detected by the second regenerator temperature detector.
166 Absorption heat-transfer system US10497222 2002-11-29 US20050022963A1 2005-02-03 Michael Garrabrant; Roger Stout; Michael Klintworth II; Eric Collet
A waste heat source (100) is used to heat a high temperature heat transfer fluid which is used to heat an absorption heat transfer machine (10) having a generator (20), an absorber (30), a condenser (40), and an evaporator (50) operatively connected together. The high temperature heat transfer fluid can also be used to heat a load (190) such as a room space or a process. The waste heat source (100) can also be used to heat an intermediate heat transfer fluid, which can be used to heat a second load (175) such as a space, a process, or an absorption heat transfer machine. Novel flow control devices (70, 60) for controlling the flow of weak solution from generator (20) to absorber (30) or of refrigerant from condenser (40) to evaporator (50), respectively, are also described.
167 Absorption refrigerating machine US10831542 2004-04-23 US20050016205A1 2005-01-27 Haruki Nishimoto; Akira Hatakeyama; Kazuyasu Iramina; Hideki Funai
Even when the efficiency of a low temperature heat exchanger is raised to reduce the required heat capacity inputting to the absorption refrigerating machine and the temperature of cooling water supplied to an absorber falls suddenly as it is, and thereby the temperature of a diluted absorbent solution falls suddenly, an absorption refrigerating machine without abnormally increasing the temperature of the concentrated absorbent solution and crystallizing the solution is disclosed. A heat recovery device 8 is provided between a low temperature heat exchanger 6 and a high temperature heat exchanger 7 of an absorbent solution pipe 13 for connecting a high temperature regenerator 1 and an absorber 5 with the low temperature heat exchanger 6, the high temperature heat exchanger 7 and an absorbent solution pump 14 therebetween. Further, the heat recovery device 9 is provided between the low temperature heat exchanger 6 and the absorbent solution pump 14. High temperature and high-pressure vapor is supplied through a heat source fluid supply pipe 10 to a heat exchanger pipe 1A provided within the high temperature generator 1 to thereby heat and boil a diluted absorbent solution within the high temperature regenerator 1 and radiate heat. Then, high temperature drain, which has been condensed by heat radiation and discharged to an exhaust heat fluid pipe 10A, is supplied to the heat recovery devices 8, 9 to thereby heat a diluted absorbent solution delivered from the absorber 5 through the absorbent solution pipe 13 to the high temperature regenerator 1 by an absorbent solution pump 14.
168 Absorption-refrigerator US10279763 2002-10-24 US20030079494A1 2003-05-01 Shiguma Yamazaki; Eiichi Enomoto; Masahiro Fukukawa
An absorption-refrigerator provided with a mechanism for recuperating heat from the exhaust gas, wherein water vapor contained in the exhaust gas is prevented from condensing even during the starting or partial load operation. An absorption-refrigerator, wherein a first and a second heat recovery systems 23, 24 are installed, an absorption liquid bypass pipe 11B for the diluted absorption liquid exited from the cold heat exchanger 9 flows by bypassing a secondnullheat recovery system 24, a flow control valve 25 is provided in this absorption liquid bypass pipe 11B, and a controller 27 for controlling the open of a flow control valve 25 is provided so that a predetermined temperature (for instance 100null C.) superior to the dew-point temperature of the exhaust gas is detected continuously by a temperature sensor 26.
169 Absorption refrigerator US10004625 2001-12-04 US06523357B1 2003-02-25 Masatoshi Katayama
An absorption refrigerator includes an evaporator having an evaporating heat exchanger pipe operable to evaporate refrigerant on an outer surface thereof so as to cool liquid to be cooled running in the pipe, an absorber containing absorbent liquid for absorbing the refrigerant evaporated at the evaporator, a regenerator for heating and concentrating the absorbent liquid supplied from the absorber by using heat source fluid and then supplying the concentrated absorbent liquid to the absorber, a condenser for condensing steam or vapor of refrigerant supplied from the regenerator and supplying the condensed refrigerant to the evaporator and an evaporator for evaporating the condensed water condensed at the condenser. The absorption refrigerator further includes absorbent liquid supplying means for supplying the absorbent liquid to the refrigerant present at the evaporator and refrigerant discharging means for discharging the refrigerant present at the evaporator to the regenerator.
170 Heat engine US10168169 2002-06-15 US20030000213A1 2003-01-02 Richard N. Christensen; Jiming Cao; E. Thomas Henkel
A heat engine (10) achieves operational efficiencies by: 1) recovering waste heat from heat engine expander (14) to preheat heat-engine working fluid, 2) using super-heated working fluid from compressor (402) to pre-heat heat-engine working fluid, and 3) using reject heat from condenser (93) and absorber (95) to heat the heat-engine boiler (12). A dual heat-exchange generator (72) affords continuous operation by using gas-fired heat exchanger (212) to heat generator (72) when intermittent heat source (40), e.g., solar, is incapable of heating generator (72). The combination of heat engine (10) and absorption and compression heat transfer devices (60, 410) allows use of low-temperature heat sources such as solar, bio-mass, and waste heat to provide refrigeration, heating, work output including pumping and heating of subterranean water and electrical generation.
171 Heat exchanger for high stage generator of absorption chiller US09891721 2001-06-26 US20020194863A1 2002-12-26 Neelkanth S. Gupte
An absorption cooling machine of the type which uses a refrigerant and an absorbent and which includes a high stage generator, absorber, condenser, heat exchangers, and an evaporator and means for connecting the components to one another to form a closed absorption cooling system. The solution side of the high stage generator is fluidically divided into two sections with a partition plate whereby gas exiting one section at relatively high temperature is further cooled in a second section called a flue gas recuperator (FGR) to improve overall burner efficiency.
172 Absorption water heater/chiller and high temperature regenerator therefor US09814713 2001-03-23 US06470702B2 2002-10-29 Yasushi Funaba; Norihiro Itou; Tomihisa Oouchi; Satoshi Miyake; Michiyuki Uchimura
An absorption water heater/chiller using lithium bromide as an absorbent and water as a refrigerant, and a high temperature regenerator therefor. The high temperature regenerator is provided with a combustion chamber defined by an inner tube (2) on the side of a blowout port of a burner (4B), from which a combustion gas is blown out. A solution is received in a liquid chamber, which extends on upper and lower sides of the combustion chamber and is defined by an outer tube (1). A refrigerant steam outflow passage (8) is formed in an upper portion of the outer tube, and gas discharge passages (13, 14) are formed at an end portion of the combustion chamber opposed to the burner. A plurality of solution tubes (3) providing communication between the liquid chamber portions on the upper and lower sides of the combustion chamber extend through the combustion chamber. The plurality of solution tubes are roughly divided into a group (3A) provided in flame of the burner, and a group (3B) provided away from the flame of the burner. The two groups are spaced from each other by 10-100 mm. Thus reduction of Nox is achieved and generation of CO is suppressed.
173 Aqua-ammonia absorption system generator with split vapor/liquid feed US09632054 2000-08-03 US06427478B1 2002-08-06 Lance D. Kirol; Paul Sarkisian
An aqua-ammonia absorption apparatus comprising an absorber assembly, a generator assembly, a condenser and an evaporator, wherein the absorber assembly comprises an absorber and a GAX absorber heat exchanger and wherein a strong liquor absorption solution is partially vaporized in the GAX absorber heat exchanger to form a two-phase vapor/liquor mixture, the apparatus including piping for directing separate vapor and liquid streams from the absorber assembly into the generator assembly and introducing the vapor stream into the generator assembly at a location where the composition is substantially the same as the vapor stream.
174 High temperature regenerator for absorption water cooling and heating machine US09381397 1999-09-20 US06279343B1 2001-08-28 Yasushi Funaba; Norihiro Itou; Tomihisa Ohuchi; Satoshi Miyake
A high temperature regenerator for an absorption water cooling and heating machine for extracting steam as coolant by heating and condensing a dilute solution of lithium bromide. An inner casing (2) defines therein a combustion chamber (11B) on the blow out port side of a burner for blowing out combustion gas. The solution is filled in liquid chambers defined in an outer casing (1) above and below the combustion chamber. A coolant vapor outlet passage (8) is defined in the upper part of the outer casing, and gas exhaust passages (13, 14) are defined in the combustion chamber on a side remote from the burner. A plurality of solution tubes 3 communicated with the liquid chambers above and below the combustion chamber are extended through he combustion chamber. The plurality of solution tubes are plane tubes having fins (16) at their side surfaces. The fins are provided only on the upstream side. With these fins, the heat-exchange between the solution filled in the plane tubes and the combustion gas can be promoted so as to promote the flow of the solution.
175 Air-cooled absorption type chiller heater and modification method US09496354 2000-02-02 US06263696B1 2001-07-24 Kenji Machizawa; Yukio Hukushima; Hidenori Iwao; Isao Katou; Keiji Tachibana
In an absorption type chiller heater, a generator is heated in order to heat a refrigerant-mixed solution to generate refrigerant vapor. This heating is generally carried out by causing high-temperature combustion gas to flow in contact with heat transfer fins, which are provided on the periphery of the generator. The aforesaid burner uses a burner of liquid-fuel combustion structure to produce a longer flame as compared to that of a gas burner. The extremity of the lengthened flame coming into contact with the heat transfer fins can cause problems such that the fins are locally overheated to burn out. In this view, the present invention arranges a flame buffer plate between the liquid fuel burner and the heat transfer fins and provides a curved flame channel. This forms a curved flame, whereby the flame, despite of its great length, is kept from its extremity coming into contact with the heat transfer fins. Besides, the flame channel, even if long, is curved to prevent larger outer dimensions of the entire chiller heater.
176 Gas absorption cooling system US09416068 1999-10-12 US06212902B1 2001-04-10 David W. Leistner
A gas absorption refrigeration apparatus combines two or more separate gas absorption cooling systems. Each cooling system consists of a generator, a condenser, an evaporator, an absorber and tubing connecting the parts to form a complete circulation system for a refrigerant, an absorption liquid and an inert gas. The cooling systems are mounted to a common cabinet with the evaporators of each system being located within the interior insulated compartment of the cabinet. The generator of each cooling system shares a common heat source.
177 High-temperature generator US842572 1997-04-15 US5915468A 1999-06-29 Naoyuki Inoue; Teiichi Mochizuki; Motonao Kera
A generator which can prevent deterioration of the chilling performance and corrosion, and can provide a high degree of reliability and long service life is disclosed. The high-temperature generator comprises a combustion chamber for flowing a combustion gas therein, a first tube assembly and a second tube assembly provided in the combustion chamber each of which has a plurality of heat transfer tubes for containing liquid therein. The first tube assembly comprises a plurality of bare tubes and is arranged at an upstream of the second tube assembly. The second tube assembly comprises a plurality of finned tubes provided with fins on the outer surface thereof. The heat transfer tubes are arranged in a staggered manner in a direction of the combustion gas flow within each of the first tube assembly and the second tube assembly. The bare tubes and the finned tubes are arranged aligned to each other in a direction of the combustion gas flow at a boundary area between the first tube assembly and the second tube assembly.
178 Absorption type refrigerator US846212 1997-04-28 US5832742A 1998-11-10 Yasumichi Kouri; Tomohiro Morita; Masatoshi Asakawa; Hidetoshi Arima; Norikazu Kubota
In a compact absorption type refrigerator which eliminates an ill effect caused by the local overheating of a heating chamber in a high-temperature regenerator with a liquid pipe boiler, a high-temperature regenerator 5 heats a heating chamber 63 in which vertical liquid pipes 51 for circulating a diluted absorption solution 2a are arranged in a matrix form with the combustion surface 60D2 of a plane flame type burner 60X to evaporate refrigerant vapor 7a from the diluted solution 2a. The width 60BX of the combustion surface 60D2 within a horizontal plane is made smaller than the width 51BX of the liquid pipes 51 arranged in a matrix form, the volume of flames on the combustion surface 60D2 within the horizontal plane is made large at a central portion and small at portions on wall 50B sides, or the volume of flames on the combustion surface 60D2 within a vertical plane is made large at an upper portion and small at a lower portion so that the diluted solution 2a flows in an upward direction in flow passages 51a and a downward direction in flow passages 50a and 50b.
179 Regenerator US757504 1996-11-27 US5704225A 1998-01-06 Kazuya Sawakura; Masayuki Oonou; Sumio Ikeda
It is an objective of the present invention to improve the response performance of absorption refrigeration machine to changes in air-conditioning load by reducing irregularity in solution concentration. A spreader 34 is provided with openings 34a having a constant diameter, and these openings are positioned or aligned in such a manner that the concentration of the openings 34a is rare on one side of the spreader but dense on the other side. The side having the rare concentration of the openings 34a is placed to the lateral wall 1a of a vessel 1 in which a solution outlet 16 is provided. The side having the dense concentration is placed to the other lateral wall 1b of the vessel 1. The spreader 34 is placed at the position where it is slightly away from the solution outlet 16 toward a front wall 1c in a vapor portion of an evaporation-separative region 19, with the bottom plate of the spreader being horizontal. The spreader 34 is provided with supply means 35, which extends parallel to and equidistant from the lateral walls 1a and 1b of the vessel 1. With this supply means, the solution which has absorbed a refrigerant at an absorber is supplied to the longitudinally central portion of the spreader.
180 Internally fired generator US478981 1995-06-07 US5692393A 1997-12-02 Michael W. Klintworth; U. Tina Kim
An absorption refrigeration system generator is disclosed which has an internal fire tube or combustion chamber for heating a composite fluid refrigerant. The fire tube includes at least one radially projecting heat transfer member on its interior surface for interaction with hot combustion gases. The generator is connected to a leveling chamber for maintaining a minimum quantity of fluid refrigerant in the generator. The leveling chamber comprises a reservoir connected to facilitate substantial equilibrium of the fluid levels within the generator and reservoir. The reservoir holds a quantity of weakened refrigerant solution flowing from the generator. A conduit within the reservoir transfers the weakened solution within the reservoir to the absorber under normal operating conditions. In the event the refrigerant level within the generator drops below a predetermined level, fluid flow out of the reservoir ceases. Thus, the generator fluid refrigerant level is prevented from dropping substantially below the predetermined level.
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