Varying Non-refrigerant Fluid Flow Patents (Class 62/105)
  • Patent number: 11268520
    Abstract: A centrifugal pump with adaptive pump stages includes an impeller configured to provide kinetic energy to fluid flow through the pump. The impeller has multiple geometric dimensions. The pump includes a diffuser connected to the impeller that is configured to convert the kinetic energy provided by the impeller into static pressure energy to flow the fluid through the pump. The pump includes an adaptive material attached to the impeller that is configured to modify, during operation of the pump, a geometric dimension to modify fluid flow through the pump.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: March 8, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Rafael Adolfo Lastra Melo, Chidirim Enoch Ejim
  • Patent number: 9677832
    Abstract: To provide a liquid cooling system for an electric component mounted in an aircraft, in which a flow rate of a coolant fed to the electric component mounted in the aircraft is optimized by a simple method, a liquid cooling system 1 for an electric component mounted in an aircraft adopts a flow rate adjusting valve which is a thermostat valve 5 such that the opening degree of the valve increases with an increase in the temperature of the coolant flowing into the flow rate adjusting valve so as to raise the flow rate of the coolant fed to the electric component 50, and the opening degree of the valve decreases with a decrease in the temperature of the coolant flowing into the flow rate adjusting valve so as to reduce the flow rate of the coolant fed to the electric component 50.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: June 13, 2017
    Assignee: Nabtesco Corporation
    Inventor: Tsutomu Yasui
  • Patent number: 9261296
    Abstract: A boiler-equipped absorption heat pump unit in which a regenerator, a boiler, and other high-temperature devices are separated from an evaporator, an absorber, and other low-temperature devices are separated by an insulated dividing wall. The dividing wall reduces heat loss by impeding the transfer of heat from the high-temperature devices to the low-temperature devices.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: February 16, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hidetaka Kayanuma, Hideyuki Akaba, Kazuma Ichikawa, Mitsuru Ishikawa, Yoshiyuki Takeuchi
  • Publication number: 20030192330
    Abstract: An aqua-ammonia absorption cooling and/or heating system actively controls the flow of weak liquor from the generator to the absorber, using one or more valves operated in response to weak liquor temperature, and/or pressure and/or concentration.
    Type: Application
    Filed: April 16, 2002
    Publication date: October 16, 2003
    Inventors: Paul Sarkisian, Lance Kirol, Uwe Rockenfeller
  • Patent number: 6263682
    Abstract: A rotary heat pump 10 comprises a vapor generator 20, a condenser 24/34, an evaporator 42 and an absorber 40 interconnected to provide cyclic fluid flow paths for a volatile fluid component and an absorbent fluid therefor. To allow operation of the pump close to the crystallisation boundary the pump includes crystallisation control means which cause the temperature of the fluid in the region prone to crystallisation to be raised when the onset of crystallisation is detected. For example the pressure increase upstream of a crystallisation site may cause warm fluid to be diverted directly or indirectly to increase the fluid temperature at the crystallisation site.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: July 24, 2001
    Assignee: Interotex Limited
    Inventors: Terence Leslie Winnington, Richard John Green, Robert Lorton, Robert Brownlee Uselton
  • Patent number: 6101832
    Abstract: The plant has a generator for a refrigerant in rich solution. A condenser is connected downstream of the generator in the refrigerant loop. A first expansion valve is connected downstream of the condenser. The refrigerant vapor produced there is directed into the sump of an absorber. The liquid refrigerant passes from the first expansion valve to a second expansion valve which adjoins an evaporator. Arranged in the absorber is a jet apparatus, whose nozzle is fed with the weak solution from the generator and whose suction space is connected to the evaporator. The weak solution therefore draws the refrigerant vapor out of the evaporator and delivers it into the top region of the absorber. There, a deflection takes place, whereupon the solution that is increasing in concentration is directed over cooling coils and passes into the sump of the absorber. In this way, very effective droplet, film, trickling and immersion absorption occurs.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: August 15, 2000
    Assignee: EES-Erdgas EnergieSysteme
    Inventors: Alexander-Ivo Franz, Manfred Forster, Antun Gelesic
  • Patent number: 6062038
    Abstract: Whenever necessary, an operation for diluting an absorbing solution after the stop of the operation is unlimitedly enabled without increasing the size of an absorption refrigerating machine. For the dilution operation after the operation of the absorption refrigerating machine, a pipe line of a dilute solution circulating pipe KD is opened by a dilution valve VD. Thereby, a solution pump P1 and an absorber A can be directly connected through a circulating pipe K6. The operation of the solution pump allows circulating a low-concentration solution and facilitates the dilution of a high-concentration solution to a low concentration. Since this case has nothing to do with a pressure difference in a path, the dilution operation can be performed whenever necessary. Moreover, since it is unnecessary to deal with a pressure loss, it is not necessary to increase the height of the apparatus.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: May 16, 2000
    Assignee: Paloma Industries, Limited
    Inventors: Katsusuke Ishiguro, Akira Maruyama, Hiroshi Kamiya
  • Patent number: 6035650
    Abstract: A rotary heat pump 10 comprises a vapor generator 20, a condenser 24/34, an evaporator 42 and an absorber 40 interconnected to provide cyclic fluid flow paths for a volatile fluid component and an absorbent fluid therefor. To allow operation of the pump close to the crystallization boundary the pump includes crystallization control means which cause the temperature of the fluid in the region prone to crystallization to be raised when the onset of crystallization is detected. For example the pressure increase upstream of a crystallization site may cause warm fluid to be diverted directly or indirectly to increase the fluid temperature at the crystallization site.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: March 14, 2000
    Assignee: Interotex Limited
    Inventors: Terence Leslie Winnington, Richard John Green, Robert Lorton, Robert Brownlee Uselton
  • Patent number: 5934090
    Abstract: An air conditioning unit is capable of preventing a liquid absorbent from crystallizing, thereby enhancing reliability of the operation thereof. A given amount of refrigerant is supplied to dilute the liquid absorbent when the air conditioning unit stops in operation, and it is circulated in lines and components of the air conditioning unit, thereby cleansing the liquid absorbent remaining in the components or lines, and the liquid absorbent is returned to the liquid tank, so that the liquid absorbent is prevented from crystallizing, whereby reliability of the operation is enhanced.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: August 10, 1999
    Assignees: Tokyo Gas Co., Ltd., Takagi Industrial Co., Ltd.
    Inventors: Tsutomu Ozu, Kimio Mochizuki, Shigetoshi Akiyama, Hiroshi Ichikawa, Senzo Shinohara, Hiroaki Kashiwagi
  • Patent number: 5823003
    Abstract: The present invention is a process for controlling a sorption cooling or heating process which employs an adsorption zone in fluid communication with a refrigeration circuit to pass desorbed vapor upon heating to a condenser and to adsorb refrigerant vapor from an evaporator when cooled. The process is cyclic and comprises heating the adsorption zone during a desorption step and cooling the adsorption zone during an adsorption step. The heating and cooling of the adsorption zone wherein a heat exchange zone is in intimate indirect thermal contact with the adsorption zone is provided during a cyclic process by alternating the flow of a working fluid at a hot source temperature or a working fluid at a cold source temperature through the heat exchange zone to provide the heating and cooling.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: October 20, 1998
    Assignee: UOP LLC
    Inventors: Frank S. Rosser, Jr., Stephen R. Dunne
  • Patent number: 5819553
    Abstract: An absorption-type air-conditioning apparatus includes an overflow pipe connecting a phase separator and an absorption chamber. When the apparatus begins operation, and the pressure differential between the phase separator and the evaporation chamber is insufficient to cause the absorption liquid to flow smoothly via dispenser nozzles into the absorption chamber, excessive accumulation of absorption liquid in the phase separator is prevented by allowing the excess liquid to bypass the nozzles via the overflow pipe. When the temperature of the absorption liquid in the phase separator increases so that the pressure differential between the phase separator and the absorption chamber is increased, the overflow pipe is closed, and normal operation of the apparatus proceeds.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: October 13, 1998
    Assignee: Paloma Industries, Ltd.
    Inventor: Katsusuke Ishiguro
  • Patent number: 5802870
    Abstract: A process and a system are disclosed for sorption heating and cooling which comprise at least 2 sorption zones. Each sorption zone comprises a heat transfer zone and an adsorption zone containing a sorbent such that the heat transfer zone is in intimate thermal contact with the adsorption zone to permit an essentially uniform temperature lengthwise through the sorption zone and thereby employ essentially all of the sorbent in the process at all times. The process comprises passing heat transfer streams such as a hot stream, a cold stream, and a recirculation stream through the heat transfer zone and routing a refrigerant through the adsorption zone of each sorption zone to affect a desorption stroke, an intermediate stroke and an adsorption stroke in the adsorption zone. Rotary and multi-port valves are employed to circulate the refrigerant and the heat transfer streams. The resulting sorption cooling process achieves a significantly higher coefficient of performance than the prior art.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: September 8, 1998
    Assignee: UOP LLC
    Inventors: Edward Charles Arnold, Stephen R. Dunne, Syed M. Taqvi
  • Patent number: 5524454
    Abstract: An absorption air conditioning system wherein a heat transfer fluid circulation system delivers heat from a waste oil burner to the generator of an absorption air conditioner. The generator is heated and endothermic reactants therein separated by contact with the warmed heat transfer fluid. High-temperature oil pumps and a heat-resistant oil storage tank are used to accomplish circulation of the heat transfer fluid. The invention includes the controls and monitors necessary for safe and efficient operation.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: June 11, 1996
    Inventor: Bruce Hollingsworth
  • Patent number: 5351504
    Abstract: A reversible heat pump providing a generator of refrigerant fluid in a vapor state produced by a rectifying column having perforated plates, with a hydrostatic head on the plate assured by the surface tension of the liquid, a reboiler of the generator heated indirectly, a storage tank of the condensed refrigerant fluid which contributes to controlling the cycle pressure for optimizing the efficiency under partial load conditions, expansion valve for the condensed refrigerant which changes the flow section as a function of the pressure and controls the flow rate of the refrigerant for draining any impurity, electro valve reducing the load loss of the expansion valve during summer, a plate absorber with swirl grid providing a microdrop flow between poor solution and refrigerant, and a multi-way valve which allows the heat pump to be coupled with a split-exchanger by deviating the flows of the operating fluids according to the requirements so as to cause the split-exchanger to perform the function of a cold sour
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: October 4, 1994
    Assignee: Ente Per le Nuove Tecnologie, l'Energia e l'Ambiente (ENEA)
    Inventors: Paolo Giacometti, Carlo Mustacchi, Vincenzo Cena
  • Patent number: 5275010
    Abstract: An individual air conditioning system with an absorption chiller heater having a controllable capacity, with thermal input to a burner of a high temperature regenerator being controlled by on-off control or the like even if the load is low. The temperature of cooling water is controlled in accordance with a concentration of refrigerant in an absorber, so that the refrigerating capacity of the absorption chiller heater can be freely varied from 0% to 100% without the refrigerant being frozen.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: January 4, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Daisuke Hisajima, Tomihisa Ohuchi, Akira Nishiguchi, Yasuo Koseki, Michihiko Aizawa, Hiroaki Yoda, Takashi Nakao
  • Patent number: 5271246
    Abstract: In an absorption chiller-heater, warm water in the heat exchanger tubes of an evaporator is heated by spraying solution on the surface of the heat exchanger tubes of an evaporator, and the temperature of the solution is lowered at the same time. As a result, using a conventional low temperature solution pump, high temperature water of around 80.degree. C. may be produced without raising the temperature of the solution. Accordingly, it is not necessary to use heat resisting materials for the solution pump, and corrosion of the materials of the apparatus is less likely to occur. At the same time, since the temperature of the parts is lowered, thermal stress of the materials decreases.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: December 21, 1993
    Assignee: Kawasaki Thermal Engineering Co., Ltd.
    Inventor: Kazuyoshi Yamauchi
  • Patent number: 4164128
    Abstract: An absorption refrigeration system is adapted to be powered by solar energy or a source of relatively low temperature waste heat. A control system automatically adjusts the maximum energizing temperature as the temperature of the cooling water, used to cool the condenser and absorber coils, varies.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: August 14, 1979
    Assignee: Borg-Warner Corporation
    Inventor: Alwin B. Newton