Reversible, I.e., Heat Pump Patents (Class 62/324.1)
  • Patent number: 7975502
    Abstract: In a heat pump apparatus of the invention, a refrigerant is circulated through a compressor 31, a radiator 32, a first throttle apparatus 33, a heat exchanger 34, a second throttle apparatus 35 and an evaporator 36 in this order. The heat exchanger 34 can be utilized as both a radiator and an evaporator by operating the first throttle apparatus 33 and the second throttle apparatus 35. Therefore, even if the outside air temperature is high, discharge pressure and suction pressure of the compressor do not rise, the heat pump apparatus can be operated in a stable refrigeration cycle, and energy can be saved.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: July 12, 2011
    Assignee: Panasonic Corporation
    Inventors: Tomoichiro Tamura, Yuuichi Yakumaru, Masaya Honma, Fumitoshi Nishiwaki
  • Patent number: 7971449
    Abstract: Heat-activated heat-pump systems and related methods are disclosed that include a power cycle coupled to a vapor-compression refrigeration cycle both utilizing the same working fluid. The power cycle comprises a boiler, an expander receiving superheated vapor and producing work from the superheated vapor, a condenser, and a pump. A regenerator conducts a first stream of working fluid from the pump to the boiler and a second stream of the working fluid from the expander to the condenser while transferring heat from the second stream to the first stream. The refrigeration cycle comprises a compressor that compresses the working fluid from the evaporator and delivers the compressed working fluid to a condenser. The expander and compressor are coupled together such that at least a portion of the work produced by the expander is utilized for running the compressor.
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: July 5, 2011
    Assignee: State of Oregon acting by and through the State Board of Higher Education on Behalf of Oregon State University
    Inventors: Richard B. Peterson, Thomas G. Herron, Monte K. Drost
  • Publication number: 20110138838
    Abstract: A heat pump comprising at least two devices for displacement of droplets of liquid by electro-wetting, where one comprises a control unit such that it forms a compressor (18) of the pneumatic fluid confined between the droplets of liquid, where the other comprises a control unit such that it forms an expander (22) to expand the pneumatic fluid confined between the droplets of liquid, where the high-pressure end of the compressor (18) is connected to the high-pressure end of the expander (22) through a thermal exchanger (20) of a hot source (SC), and where the low-pressure end of the expander (22) is connected to the low-pressure end of the compressor (18) through a thermal exchanger (16) with a cold source (SF), and where the unit formed by the compressor (18), the expander (22), and the thermal exchangers (16, 20) forms a single channel.
    Type: Application
    Filed: July 21, 2009
    Publication date: June 16, 2011
    Applicant: Commissariat a L'Energie Atomique et aux Energies Alternatives
    Inventor: Ghislain Despesse
  • Publication number: 20110138829
    Abstract: In a conventional heat pump system which has a space heat exchanger, a motor (717) driven compressor (106), a refrigerant, a suction line (104) for feeding refrigerant to the compressor, and a waste heat exchanger (720) for adding or removing heat from the heat pump system, the improvement uses various devices to optimize a temperature of the refrigerant in the suction line (104), where the refrigerant enters the compressor. The preferred device is a Peltier thermocouple (500), which can be controlled by current, in response to a sensor (502) in the suction line, to heat or cool the suction line to minimize the load of incompressible liquid or high gas pressure on the compressor. An improved auxiliary heat exchanger also can improve efficiency.
    Type: Application
    Filed: August 8, 2009
    Publication date: June 16, 2011
    Applicant: SAVE ENERGY INC.
    Inventor: David Sooil Koh
  • Patent number: 7958741
    Abstract: A heating, ventilation and air conditioning system includes a housing presenting an opening defining a rim surrounding a motor. A plurality of supports extend from the motor and a plurality of posts extend axially between a first end and a second end and interconnect the supports and the housing. The first ends of each post are supported by one of the supports and the second ends are supported by the housing with each of the posts being flexible for allowing for bending of the posts between the first end and the second end to allow for movement of the motor relative to the housing. In one embodiment, the first ends are upper ends and the second ends are lower ends and the housing includes an extension extending downwardly and a ledge extending radially inwardly. In another embodiment, the first ends are lower ends and the second ends are upper ends integral with the rim.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: June 14, 2011
    Assignee: Delphi Technologies, Inc.
    Inventor: Edward Douglas Pettitt
  • Publication number: 20110132008
    Abstract: An absorption heat pump system and a method for increasing the energy grade using the excess heat at a low temperature are provided. The absorption heat pump system comprises a heat pump generator (11), a heat pump condenser (12), a heat pump evaporator (13), a heat pump absorber (14), and an absorbent crystallizer (141). The absorbent crystallizer (141) has an inlet for the absorption solution, an outlet for the absorption solution and an outlet for the absorption solution containing absorbent crystals; The inlet for the absorption solution connects to the heat pump absorber (14), The outlet for the absorption solution connects to the heat pump generator (11), The outlet for the absorption solution containing absorbent crystals connects to the heat pump absorber (14). The absorption heat pump system can further comprise absorption refrigeration circulation subsystem, and the cooling medium produced by the refrigeration evaporator circulates between the refrigeration evaporator and the heat pump condenser.
    Type: Application
    Filed: January 8, 2009
    Publication date: June 9, 2011
    Applicant: BEIJING LIANLIYUAN TECHNOLOGY CO., LTD.
    Inventor: Qingquan Su
  • Publication number: 20110132020
    Abstract: Provided are a heat exchanger capable of providing sufficient heat exchange capability even with heat transfer tubes having a reduced outer diameter, and a heat pump device using the same. The heat transfer tubes has an outer diameter D in a range of 5 mm?D?6 mm, has a thickness t in a range of 0.05×D?t?0.09×D, are disposed at a vertical pitch L1 in a range of 3×D?L1?4.2×D, and are disposed at a longitudinal pitch L2 in a range of 2.6×D?L2?3.64×D. A sufficiently increased heat exchange rate per unit weight is obtainable with the heat exchanger.
    Type: Application
    Filed: August 5, 2009
    Publication date: June 9, 2011
    Applicant: SANDEN CORPORATION
    Inventors: Isao Katou, Naotaka Iwasawa, Hirotaka Kado
  • Publication number: 20110132019
    Abstract: A heat pump apparatus includes a refrigerant circuit in which a compressor, a condenser, expansion means, and an evaporator are serially connected. Condensation temperature detection means that detects a saturation temperature of the condenser, and evaporation temperature detection means that detects the saturation temperature of the evaporator are provided. Operation efficiency is estimated by a value obtained by dividing heating ability estimated from a detection value of the condensation temperature detection means by a difference between a detection value of condensation temperature detection means and that of evaporation temperature detection means or dissipation power estimated by the difference.
    Type: Application
    Filed: March 5, 2009
    Publication date: June 9, 2011
    Applicant: Mitsubishi Electronic Corporation
    Inventors: Mamoru Hamada, Fumitake Unezaki, Yoshihiro Takahashi, Kengo Takahashi, Kazuki Okada, Shinichi Uchino
  • Patent number: 7942015
    Abstract: A water sump structure (1) is provided. A channel, trough, trench or the like is formed as or provided with an impermeable member (7) for trapping water. One or more heat exchange pipes (6) for carrying a heat exchange fluid are located, in use, so as to pass through water trapped by the impermeable member thereby forming a heat exchange water sump structure.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 17, 2011
    Assignee: Formpave Holdings, Ltd.
    Inventor: Peter Leslie Hart
  • Publication number: 20110100032
    Abstract: An apparatus for removing a first gas from a system including a second different gas, includes a collecting basin for collecting the first gas, wherein the collecting basin includes a variable inlet opening for letting in the first gas into the collecting basin, wherein the inlet opening can be brought into communication with the system, and a variable outlet opening for letting out the first gas from the collecting basin, wherein the variable outlet opening is not in communication with the system, and a generator for generating a pressure within the collecting basin, which is higher than the pressure of an atmosphere outside the variable outlet opening, wherein the inlet opening and the outlet opening are implemented such that in a discharge mode at a pressure within the collecting basin which is higher than the pressure in the atmosphere, the inlet opening has a higher fluid resistance than the outlet opening, such that the second gas can be output from the collecting basin via the outlet opening, and that
    Type: Application
    Filed: January 15, 2009
    Publication date: May 5, 2011
    Inventors: Holger Sedlak, Oliver Kniffler
  • Publication number: 20110096503
    Abstract: A method and system of utilizing waste heat from a plurality of data center equipment comprising the steps of collecting waste heat from a plurality of data center equipment and utilizing said waste heat as the driving heat input for a heat driven engine. Heat recovery means collects waste heat from heat-producing equipment and transfers it in the form of hot water to drive a heat driven engine such as a chiller or heat pump. The output of the heat driven engine may be put to many productive uses, thereby reducing the over all energy load on the data center.
    Type: Application
    Filed: October 27, 2009
    Publication date: April 28, 2011
    Inventors: Randal N. Avery, Charles Booth, Wes Livingston, Tom Watson Lopp
  • Publication number: 20110083462
    Abstract: The invention relates to a device (1) for obtaining heat, comprising a first brine circuit (2) in which at least a first brine pump (3) and at least one heat pump unit (40) with an outside register (5) for utilizing heat of the ambient air are arranged, and at least a second brine circuit (7) in which at least a second brine pump (9) and at least a solar collector (8) are arranged, with the second brine circuit (7) being thermally connected with a heat storage reservoir (11). In order to cover the largest possible number of operating states and to ensure high thermal efficiency, it is provided that the first and second brine circuit (2, 7) can be flow-connected with each other via a first valve (24), preferably a mixing valve.
    Type: Application
    Filed: April 24, 2009
    Publication date: April 14, 2011
    Applicant: VKR HOLDING A/S
    Inventors: Klaus Engelhart, Thomas Prachar, Leo Obkircher, Stefan Jedrejcic, Christian Bichler
  • Patent number: 7918104
    Abstract: A water cooling type air conditioner is provided. The water cooling type air conditioner includes first and second heat exchangers, a refrigerant pipe, and a direction controlling unit. The first heat exchanger performs heat exchange between air and refrigerant. The second heat exchanger performs heat exchange between the refrigerant and cooling water. The refrigerant pipe is connected between the first heat exchanger and the second heat exchanger to guide a flow of the refrigerant. The direction controlling unit is disposed on one side of the second heat exchanger and controls the refrigerant and the cooling water flowing inside the second heat exchanger to flow in respectively opposite directions.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: April 5, 2011
    Assignee: LG Electronics Inc.
    Inventors: In Woong Park, Ja Hyung Koo, Seung Cheol Baek, Soo Yoon Shin, Dong Hyuk Lee, Chang Ryul Kim, Man Ho Chun, Hyoung Suk Woo, Yong Taeg Kim, Sung Rok Ryu
  • Patent number: 7908872
    Abstract: Heat pumps move heat from a source to a warmer sink, with Bernoulli heat pumps accomplishing this movement by reducing the temperature in a portion of the generally-warmer heat-sink flow. Heat flows spontaneously from the generally cooler heat-source flow into the locally cold portion of the heat-sink flow, which is the neck of a Venturi. The temperature reduction results from the Bernoulli conversion of random gas-particle motion (temperature and pressure) into directed motion (flow). This invention is a Bernoulli heat pump in which the heat transfer into the Venturi neck exploits unusual thermodynamic transport properties of rare-gases. Rare gases, especially mixtures of them, possess unusually small Prandtl numbers and thereby facilitate the diffusion of random particle motion (heat) relative to the diffusion of directed particle motion (viscosity), viscous friction being responsible for most of the power consumed by a Bernoulli heat pump.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: March 22, 2011
    Assignee: MachFlow Energy Inc.
    Inventors: Arthur R. Williams, Charles C. Agosta
  • Publication number: 20110056227
    Abstract: Disclosed is a heat recovery system of a plant using a heat pump that absorbs some heat energy wasted from a condenser of the plant. The heat recovery system is constructed such that water condensed by the condenser is supplied to a service water heater via condensate pumps. A heat pump is installed between the condensate pumps and the service water heater for receiving the condensed water and the coolant. Some of the condensed water and the coolant, having passed through the heat pump, are supplied to a coolant inlet port of the condenser, and the remaining portions are supplied to the service water heater. The condensed water supplied to the service water heater is heated by a three way valve through which service water heating steam is supplied. Some of the steam is directly recovered to the condenser via a combustion air heater.
    Type: Application
    Filed: December 15, 2009
    Publication date: March 10, 2011
    Inventor: Hoon JUNG
  • Publication number: 20110041564
    Abstract: An appliance system that includes an appliance group containing at least two appliances, a first appliance designed to perform a first consumer function related to the first appliance and a second appliance that is separate from the first appliance and designed to perform a second consumer function related to the second appliance. The appliance system also includes a thermal energy generator, typically a heat pump, where the thermal energy heats at least one thermal energy bearing fluid and is operably connected to the first and second appliances to deliver thermal energy to the first and second appliances simultaneously or at different times via one or more of the thermal energy bearing fluids.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 24, 2011
    Applicant: WHIRLPOOL CORPORATION
    Inventors: BRUCE C. BEIHOFF, NIHAT O. CUR, KIRK M. DUNSBERGEN, JOEL A. LUCKMAN, RICHARD A. SUNSHINE, TAO XIE
  • Publication number: 20110023516
    Abstract: The invention is a different scheme plant which changes radically the method of conception of all refrigeration systems, conditioning and heat pump. Sistema F.e.e. shocks all previous concepts regarding the disposal of process heat coming from any industrial production. Sistema F.e.e. is an integrated system in an artificial environment which recovers and utilizes each possible source of thermal energy, to the limit of utilizing the thermal energy which comes from scraps of production auxiliary to its own disposal. Sistema F.e.e. has been the beginning of the third great industrial revolution, which is the energetic revolution in respecting nature. Sistema F.e.e. is instead integrated to nature; our system is the point of beginning which marks the end of the oil and petroleum era.
    Type: Application
    Filed: March 19, 2010
    Publication date: February 3, 2011
    Inventor: Arturo Dazza
  • Patent number: 7874175
    Abstract: An engine/heat pump is shown. Most of its parts rotate around the same central axis. It comprises two doubly connected chambers. Blades in each chamber substantially rotate with the chamber and may be firmly attached to the walls of the chamber, thus forming a modified centrifugal pump with axial input and discharge. An expandable fluid is rotated outward by one of the pumps and then heat is added for an engine or removed for a heat pump as the fluid is being sent to the outer part of the second pump. The fluid travels toward the center of the second pump, thus impelling the pump in the rotation direction. Then heat is removed for an engine or added for a heat pump as the fluid leaves the second pump and travels back to the first pump near the center of rotation of both pumps. Rotation energy of the fluid is typically much larger than the circulation energy. A modified centrifugal pump with axial discharge having a casing rotating with the blades is also claimed.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: January 25, 2011
    Inventor: Ronald Edward Graf
  • Patent number: 7874499
    Abstract: A climate control system for a storage unit. The system includes a reverse cycle chiller; a fluid supply line in fluid communication with an outlet of the fluid side heat exchanger; a fluid return line in fluid communication with an inlet of the fluid side heat exchanger and the fluid supply line; at least one hydronic coil in optional fluid communication with the fluid supply line and the fluid return line, the at least one hydronic coil located in a room to be controlled; a controller in communication with the reverse cycle chiller and the at least one hydronic coil; an ambient temperature sensor in communication with the controller; an ambient humidity sensor in communication with the controller; a room temperature sensor in communication with the controller, the room temperature sensor positioned in the room; and a room humidity sensor in communication with the controller, the room humidity sensor positioned in the room. A method of controlling the climate in a storage unit is also described.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: January 25, 2011
    Assignee: Store-N-Stuff LLC
    Inventor: Joseph R. Lochtefeld
  • Patent number: 7856837
    Abstract: Air conditioning equipment that ensures sufficient noise reduction in the low frequency range of a few hundred hertz or below. The air conditioning equipment is characterized by including a heat exchanger for exchanging heat between air and refrigerant of a refrigeration cycle, a fan that supplies air to the heat exchanger, an air duct in which the fan is installed and through which acoustic waves are propagated, and a plurality of small holes that blows a jet into the air duct and sucks a jet from the air duct by a pressure difference between the blow side and the suction side of the fan.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: December 28, 2010
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Japan Aerospace Exploration Agency
    Inventors: Kouji Yamashita, Tsuyoshi Uchida, Tatsuya Ishii, Katsumi Takeda, Hideshi Oinuma, Kenichiro Nagai
  • Patent number: 7849698
    Abstract: A method for configuring a controller for an HVAC system. The method comprises providing a closed loop refrigerant system and a control system to control the closed loop refrigerant system. The control system comprises a controller, an input device, and a processor including a signal sensing circuit. The input device is activated to provide one or more signals to the controller to control the components of the closed loop refrigerant system. One or more signals are sensed with the signal sensing circuit to determine whether signals are present between the input device and the controller. The signals are processed with the processor to determine what type of closed loop refrigerant system is present. The controller is then configured to control the type of system determined by the processor.
    Type: Grant
    Filed: January 23, 2006
    Date of Patent: December 14, 2010
    Assignee: York International Corporation
    Inventors: Gregory R. Harrod, Jeffrey L. Tucker
  • Patent number: 7841201
    Abstract: A heat pump including an evaporator for evaporating water as a working liquid so as to produce a working vapor, the evaporation taking place at an evaporation pressure of less than 20 hPa. The working vapor is compressed to a working pressure of at least 25 hPa by a dynamic-type compressor so as to then be liquefied within a liquefier by direct contact with liquefier water. The heat pump is preferably an open system, where water present in the environment in the form of ground water, sea water, river water, lake water or brine is evaporated, and where water which has been liquefied again is fed to the evaporator, to the soil or to a water treatment plant.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: November 30, 2010
    Assignee: Efficient Energy GmbH
    Inventors: Holger Sedlak, Oliver Kniffler
  • Patent number: 7832466
    Abstract: A water supply system includes a main water tank and a sub-tank of smaller dimensions than the main tank for supplying hot and cold water for household use. The sub-tank is surrounded by a tubular coil of refrigerant in contact with the sub-tank, a layer of insulation and an outer wall for maintaining the insulation in place and protecting the tubular coil and sub-tank from being damaged. A water heater is disposed in or below a lower part of the tank and a three-way switch is provided for selecting heating or refrigeration during different seasons of the year.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: November 16, 2010
    Inventor: Abdullah Ahmad Al-Hashash
  • Patent number: 7827809
    Abstract: A method includes operating a compressor with a vapor injection system and selectively supplying vapor to the compressor during compressor operation through actuation of a first control valve. The method further includes closing the first control valve to prevent vapor from entering the compressor for a first predetermined time period leading up to stopping operation of the compressor and stopping the compressor with the first control valve in the closed position. The compressor is started with the first control valve in the closed position and the first control valve is maintained in the closed position for a second predetermined time period following starting of the compressor. The first control valve is opened to supply vapor to the compressor after the second predetermined time period.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 9, 2010
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Hung M. Pham, Jean-Luc M. Caillat, Ronald L. Van Hoose
  • Patent number: 7823405
    Abstract: Heat engines move heat from a source to a sink. In a subset of heat engines, called heat pumps, the temperature of the source is below that of the sink. A subset of heat pumps, called working-fluid heat pumps, accomplishes the heat-pumping function by varying the temperature of a working fluid over a range that includes the temperatures of both the source and the sink. A subset of working fluid heat pumps, called Bernoulli heat pumps, accomplish this temperature variation of the working fluid by means of Bernoulli conversion of random molecular motion into directed motion (flow). This invention is a Bernoulli heat pump in which Bernoulli conversion is accomplished using a rotating disk, similar to those used in computers for data storage. Most working fluid heat pumps used for cooling and heating accomplish the temperature variation by compression of the working fluid. In contrast to compression, Bernoulli conversion consumes no energy.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: November 2, 2010
    Inventor: Arthur R. Williams
  • Patent number: 7823404
    Abstract: A vapor-compression air conditioning system comprising a blower positioned in a return air flow path from a conditioned space, a reheat heat exchanger positioned in the return air flow path and downstream from the blower, a system reversing valve fluidly coupled to the reheat heat exchanger, and a refrigerant flow sequencer interposed the system reversing valve and the reheat heat exchanger. A method of manufacturing an air conditioning system is also provided.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: November 2, 2010
    Assignee: Lennox Industries Inc.
    Inventor: Oved Hanson
  • Patent number: 7810342
    Abstract: A refrigerant circuit (10) is provided with two adsorption heat exchangers (31, 32) in addition to an outdoor heat exchanger (21) and an indoor heat exchanger (22). An adsorbent is carried on the surface of each of the adsorption heat exchangers (31, 32). In the adsorption heat exchanger (31, 32) serving as an evaporator, moisture in the air is adsorbed by the adsorbent. In the adsorption heat exchanger (31, 32) serving as a condenser, moisture is desorbed from the adsorbent and then applied to the air. Then, the air dehumidified or humidified by the adsorption heat exchanger (31, 32) is supplied to a room to cope with latent heat load in the room. On the other hand, in the indoor heat exchanger (22), air is cooled or heated. Then, the air cooled or heated by the indoor heat exchanger (22) is supplied to the room to cope with sensible heat load in the room.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: October 12, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuki Matsui, Shuji Ikegami, Tomohiro Yabu, Satoshi Ishida, Junichi Teraki
  • Patent number: 7805960
    Abstract: The air conditioning system including at least one sensor of the thermal comfort of the passenger compartment of a motor vehicle, and an apparatus having at least one pair of heat-exchanger units, each designed to increase and reduce said temperature at alternating intervals under the control of the sensor. Each heat-exchanger unit comprises a substrate having the property of absorbing and releasing heat according to the absorption of a gas. The two substrates are set in two hermetic casings in communication with one another through a compressor and a series of valves, which can be actuated so as to transfer the gas alternately from one to another of the two substrates. Each heat exchanger unit also includes an outlet conveyor with an outlet opening to the passenger compartment and another outlet opening towards the outside. The two outlets are controlled by hatches that can be actuated intermittently so as to send hot air or cold air continuously into the passenger compartment.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: October 5, 2010
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventor: Daniela Magnetto
  • Publication number: 20100242523
    Abstract: A system for maintaining a temperature of electronic equipment within its normal operating temperature range is disclosed. The system includes a housing having an inner liner that behaves as a heat sink, an outer shell that protects the electronic equipment from weather or harsh environmental conditions and a thermal insulation material disposed between the outer shell and the inner liner to mitigate heat transfer between the interior cavity of the inner liner and the environment. The system may further include a heat transfer unit mounted to a rear portion of the inner liner so that heat is funneled through the rear portion of the inner liner when transferring heat between the interior cavity of the inner liner and the environment.
    Type: Application
    Filed: March 26, 2010
    Publication date: September 30, 2010
    Inventor: Todd Rubright
  • Patent number: 7797956
    Abstract: A first motor-actuated expansion valve and a second motor-actuated expansion valve which are connected in parallel with each other in back-to-back connection are provided between an outdoor heat exchanger and an indoor heat exchanger. In the first motor-actuated expansion valve, at the time of non-operation and full closure, when the refrigerant pressure on the indoor heat exchanger side is higher than the refrigerant pressure on the outdoor heat exchanger side by a predetermined value or more, the full closure is released by receiving the refrigerant pressure on the indoor heat exchanger side. In the second motor-actuated expansion valve, at the time of non-operation and full closure, when the refrigerant pressure on the outdoor heat exchanger side is higher than the refrigerant pressure on the indoor heat exchanger side by a predetermined value or more, the full closure is released by receiving the refrigerant pressure on the outdoor heat exchanger side.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: September 21, 2010
    Assignees: Sanyo Electric Co., Ltd, Toshiba Carrier Corporation
    Inventors: Akira Terasaki, Kazuto Okitsu
  • Patent number: 7784297
    Abstract: An object of the present invention is to provide a cooling heating device in which a suitable operation can be performed in harmony with fluctuations of cooling and heating loads to reduce energy consumption, and the cooling heating device includes an outdoor heat exchanger having one end connected to a refrigerant outlet-side pipe of a condenser via an expansion valve and having the other end connected to a suction-side pipe and a discharge-side pipe of a compressor and configured to perform heat exchange between a refrigerant and outside air; a changeover valve which executes control so as to pass the refrigerant discharged from the compressor through the condenser or the outdoor heat exchanger and supply the refrigerant from the outdoor heat exchanger to the compressor or supply the refrigerant from the evaporator to the compressor; and a control unit which controls the compressor, the expansion valve and the changeover valve based on a cooling operation signal in response to a cooling load of the cool tar
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: August 31, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masahisa Otake, Koji Sato
  • Publication number: 20100205981
    Abstract: An installation for storing and/or transporting energy comprises a charging station, a discharging station and a reactor part (1). The reactor part is designed to be part of a chemical heat pump and contains an active substance. It is also arranged to be capable of being connected to the charging station for charging, i.e. transfer of the active substance to a charged state, and to the discharging station for discharging, i.e. transfer of the active substance to a discharged state. In the reactor part a matrix for the active substance can in one embodiment be provided, so that the active substance both in its solid and its liquid state is held or carried or bonded by the matrix. The matrix is advantageously an inert material such as aluminium oxide and has pores, which are permeable for the volatile liquid and in which the active substance is located. In particular, a material can be used that has a surface or surfaces, at which the active substance can be bonded in the liquid state thereof.
    Type: Application
    Filed: November 28, 2008
    Publication date: August 19, 2010
    Applicant: CLIMATEWELL AB (PUBL)
    Inventors: Goran Bolin, Karin Thunman, Ray Olsson
  • Publication number: 20100193155
    Abstract: A liquid circulation heating system includes a heat pump for producing a heated liquid and a heating radiator. The heat pump has a heat pump circuit for circulating a refrigerant to heat a liquid. The refrigerant contains tetrafluoropropene and difluoromethane as main components. According to the liquid circulation heating system having such a configuration, a negative impact on global warming can be reduced.
    Type: Application
    Filed: January 26, 2010
    Publication date: August 5, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Kazuo NAKATANI, Yasuhiko ISAYAMA
  • Patent number: 7757508
    Abstract: A heat pump has a refrigerant loop, a compressor in fluid communication with the refrigerant loop, at least one indoor heat exchanger in fluid communication with the refrigerant loop, and at least one outdoor heat exchanger in fluid communication with the refrigerant loop. The at least one outdoor heat exchanger has a phase change material in thermal communication with the refrigerant loop and in fluid communication with an outdoor environment. Other systems, devices, and methods are described.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: July 20, 2010
    Assignee: UT-Battelle, LLC
    Inventors: Moonis Raza Ally, John Jager Tomlinson, Clifford Keith Rice
  • Patent number: 7752864
    Abstract: A refrigeration apparatus (1) is provided with a refrigerant circuit (1E) along which are connected a compressor (2), an outdoor heat exchanger (4), an expansion mechanism, an indoor heat exchanger (41) for providing room air conditioning, and a cooling heat exchanger (45, 51) for providing storage compartment cooling. The refrigerant circuit (1E) includes a discharge side three way switch valve (101) for varying the flow rate of a portion of the refrigerant which is discharged out of the compressor (2) and then distributed to the indoor heat exchanger (41) and the outdoor heat exchanger (4) during a heat recovery operation mode in which the indoor heat exchanger (41) and the outdoor heat exchanger (4) operate as condensers. As a result of such arrangement, even when the amount of heat obtained in the cooling heat exchanger (45, 51) exceeds the amount of heat required in the indoor heat exchanger (41), surplus heat is discharged without excessive decrease in the discharge pressure of the compressor (2).
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: July 13, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Masaaki Takegami, Takeo Ueno, Kenji Tanimoto, Satoru Sakae
  • Patent number: 7752857
    Abstract: A refrigerator has a coolant cooler for cooling a coolant at the entrance of a flow control valve, when the cooling amount in the coolant cooler is deficient as well as excessive. The refrigerator includes a compressor for compressing the coolant, a radiator for radiating heat from the coolant, a coolant cooler for cooling the coolant, a flow control valve for regulating the flow volume of the coolant, an evaporator for evaporating the coolant, and a heat-exchange-amount control for controlling the amount of heat exchanged in the coolant cooler. The coolant is circulated through the compressor, the radiator, the coolant cooler, the flow control valve, and the evaporator, in that sequence.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: July 13, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shinichi Wakamoto, Toshihide Kouda, Masahiro Sugihara, Fumitake Unezaki, Masayuki Kakuta
  • Patent number: 7752855
    Abstract: An air conditioner has a heat source unit with a compressor and a heat source heat exchanger and utilization units with utilization expansion valves and utilization heat exchangers. The heat source unit and the utilization unit are interconnected via refrigerant communication pipes. The air conditioner is capable of switching and operating between a normal operation mode in which control of the respective devices is performed depending on the operation loads of the utilization units and a refrigerant quantity judging operation mode in which the utilization units perform cooling operation. The utilization expansion valves are controlled such that degrees of superheating at outlets of the utilization heat exchangers become a positive value, and an operation capacity of the compressor is controlled such that evaporation pressures in the utilization heat exchangers become constant.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: July 13, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiromune Matsuoka, Junichi Shimoda, Kenji Sato, Kazuhide Mizutani
  • Patent number: 7743621
    Abstract: The present invention provides a multi-range composite-evaporator type cross-defrosting system for continuous heating operation under an environment temperature range from 20 degree to negative 40 degree Celsius. Said system employs a combination of two defrosting methods under different temperature and humidity conditions; the first defrosting method is used for the outdoor temperature range of 20 degree Celsius to 0 degree Celsius, the second defrosting method is used in the outdoor temperature range of 10 degree Celsius to negative 40 degree Celsius, and a control system will adjust the appropriate threshold for switching between the two defrosting methods.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: June 29, 2010
    Inventor: Lung-Tan Hu
  • Publication number: 20100147965
    Abstract: A heat pump includes a first portion for evaporating a working fluid at a first pressure, for compressing the evaporated working fluid to a second, higher pressure, and for liquefying the compressed working fluid within a liquefier, and a second portion for compressing liquid working fluid to a third pressure, which is higher than the second pressure, for evaporating the working fluid compressed to the third pressure, for relaxing the evaporated working fluid to a pressure, which is lower than the third pressure, so as to generate electrical current, and for liquefying relaxed evaporated working fluid within the liquefier.
    Type: Application
    Filed: February 4, 2008
    Publication date: June 17, 2010
    Inventors: Holger Sedlak, Oliver Kniffler
  • Publication number: 20100147004
    Abstract: The present invention discloses that the conventional applications for heat pump or heat exchange devices are further made to be the functional structure having periodic positive and reverse directional pumping, wherein either one of the pumping flow directions of the primary side fluid piping for passing by primary side fluid or secondary side fluid piping for passing by secondary side fluid are driven by the periodic positive and reverse flow directional pump to timely improve the temperature distribution status between the primary side fluid and secondary side fluid as well as reduce the defects of impurity accumulations in fixed flow directions.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 17, 2010
    Inventor: Tai-Her Yang
  • Patent number: 7735333
    Abstract: An air conditioning and refrigeration system includes a compressor, a four-way valve, two delivering guide pipes joined to two lateral sides of the four-way valve, two thermal compensation devices and two heat exchangers. Even if the air conditioner is a window type in association with a rotary compressor, the purpose of slow running with fast temperature reduction can be reached by means of doubling refrigerant filling and flow process regulation. Meanwhile, hi/lo pressure ratio 4:1 (cool room) or 8:1 even higher (warm room) is the most novel design of the air conditioner and it is capable of secure the indoor comfort. Besides, in case of the present invention being applied to the refrigeration system, the four-way valve inverse direction of the refrigerant being changed to enhance the efficiency thereof without using tungsten filament for defrosting.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: June 15, 2010
    Inventor: Ming-Li Tso
  • Publication number: 20100122545
    Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a tetrafluoropropene and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 20, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Barbara Haviland Minor, Thomas J. Leck, Donald Bernard Bivens
  • Patent number: 7716943
    Abstract: A heat pump system including a first heating/cooling exchange loop including a refrigerant to water heat exchanger to produce a first output. A second heating/cooling exchange loop includes a refrigerant to forced air heat exchanger to produce a second output. A compressor is fluidly coupled to the first heating/cooling exchange loop and the second heating/cooling exchange loop. A controller is connected to control the first output and the second output and to transmit control signals to the at least one compressor, for balancing the first output and the second output responsive to a structural heating/cooling load.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: May 18, 2010
    Assignee: Electro Industries, Inc.
    Inventor: William J. Seefeldt
  • Publication number: 20100117843
    Abstract: This heat pump type hot water supply apparatus has a remaining hot water display (41) which displays remaining hot water in a hot water storage tank (22) by a plurality of scales (41a-41e) step by step, and a display controller (30) which changes the remaining hot water display (41) according to the amount of remaining hot water in the hot water storage tank (22). A change amount of hot water which changes a level lighting 3 scales (41c-41e) of the remaining hot water display (41) to the next level thereof by the display controller (30) is larger than a change amount of hot water which changes a level lighting 4 scales (41b-41e) of the remaining hot water display (41) to the next level thereof by the display controller (30).
    Type: Application
    Filed: June 6, 2008
    Publication date: May 13, 2010
    Applicant: SANDEN CORPORATION
    Inventor: Kouji Kobayashi
  • Publication number: 20100096104
    Abstract: The invention described herein represents a significant improvement in the efficiency of heating and cooling processes for applications such as buildings. Multiple energy input means, energy storage, and energy transformation steps are described and integrated to optimize efficiency in many scenarios. An integrated single axle energy transformation system is provide and a microcontroller system for selecting between twelve modes of operation.
    Type: Application
    Filed: December 15, 2009
    Publication date: April 22, 2010
    Inventor: Ray M. Alden
  • Publication number: 20100089077
    Abstract: A heat pump system, a method for adjusting a temperature of lubricating water in a heat pump system, and a method for operating a heat pump system, which suppress boiling of lubricating water for bearings and thereby minimize the deterioration in reliability of the bearings. A heat pump system comprising an evaporator 43 for generating steam, and a compressor 34 including a first stage 33 and second stage 32 as a plurality of compression mean for compressing the steam, wherein bearings 51 for supporting the compressor 34 are water bearings, and lubricating water in each of the water bearings 51 is controlled to a temperature less than a saturation temperature associated with an internal pressure of each water bearing 51.
    Type: Application
    Filed: December 15, 2009
    Publication date: April 15, 2010
    Applicant: HITACHI, LTD.
    Inventors: Takanori Shibata, Shigeo Hatamiya, Toshihiko Fukushima
  • Publication number: 20100077779
    Abstract: An air source heat pump wherein heat is extracted from air at ambient temperature in an evaporator (4) and heat is rejected at a higher temperature in a condenser (2); further comprises an auxiliary heater (7) arranged to preheat the ambient air when required to prevent deposition of frost on the evaporator. The combustion heater may be a gas fired boiler, arranged to heat recirculating water for supplying heating radiators and wherein the flue gases mix with the ambient air before it passes over the evaporator.
    Type: Application
    Filed: December 10, 2007
    Publication date: April 1, 2010
    Inventor: Stephen F. Pearson
  • Patent number: 7685835
    Abstract: An air conditioning system includes a heat source unit, an air supply device that supplies the outside air to the room as the ventilation air, a water supply type humidifier for humidifying the ventilation air, a heating medium circuit, and a supply water heating device. The heat source unit heats a heating medium that is used for heating the room in a heating medium—refrigerant heat exchanger. The heating medium circuit includes at least one room heating device that releases the heat of the heating medium heated in the heating medium—refrigerant heat exchanger into the room, and circulates the heating medium between the room heating device and the heating medium—refrigerant heat exchanger. The supply water heating device uses the heat generated from the heat source unit in order to heat water to be used in the humidifier.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: March 30, 2010
    Assignee: Daikin Industries, Ltd.
    Inventor: Manabu Yoshimi
  • Patent number: 7685832
    Abstract: An energy picking-up system by using water of river, lake and sea as low-grade energy source, includes energy collecting device, energy exalting device and radiator in series. The energy collecting device includes a circuit, which is comprised of a heat collector, a low-grade heat exchanger and a diving pump. The heat collector includes a siphon tube, a drain tube and a vacuum equipment. One end of the siphon tube is placed in the heat collecting well that is located near river, lake or sea, and the other end is placed into the water of river, lake or sea. The vacuum equipment is connected with the siphon tube. One end of the drain tube is connected with the outlet of the low-grade heat exchanger, the other end is placed into or onto the water of river, lake or sea. The diving pump is positioned in the heat collecting well, and is connected with the inlet of the low-grade heat exchanger coin.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: March 30, 2010
    Inventor: Shengheng Xu
  • Publication number: 20100043633
    Abstract: Methods, devices, and systems, and devices for carrying out sorption (adsorption and absorption) for separating and/or purifying fluid mixtures are disclosed. Medical oxygen generators, dehumidifying units, sorptive heat pumps, ozone generators and Peltier devices are also disclosed. The sorption methods involve pressure swing operation of at least two sorption units. Energy from the desorbing and decompressing fluid is substantially recovered and used within the system.
    Type: Application
    Filed: April 30, 2007
    Publication date: February 25, 2010
    Applicant: Separation Design Group, LLC
    Inventor: S. Douglas Galbraith