Selective Heating Or Cooling Patents (Class 62/159)
  • Publication number: 20090158760
    Abstract: A high efficiency cooling and heating apparatus comprises an outdoor condensing unit having a high speed fan disposed within a housing. Also disposed with the housing is a micro compressor run by a high speed brushless DC motor with a custom winding to increase efficiency and decrease weight. A control circuit allows the motor to operate at high speeds almost instantaneously. The fan pulls air across a dual condenser coil disposed within the housing. An indoor evaporative unit also houses a high speed fan along with a control circuit to allow an operator to select cooling or heating an air flow. The indoor and out door units are connected with hoses to provide heat exchange. The apparatus can be operated at a much higher ambient temperature than conventional air cooling and heating systems.
    Type: Application
    Filed: December 17, 2008
    Publication date: June 25, 2009
    Inventor: Shaam P. Sundhar
  • Publication number: 20090158759
    Abstract: Provided is an air conditioning system which can automatically switch the operating mode of at least one indoor unit based on the difference between a measured indoor temperature provided by an indoor temperature sensor and a predefined set indoor temperature and then set a new set indoor temperature. The air conditioning system does not require a user to manually switch the operating mode of the indoor unit, thereby maximizing user convenience. In addition, the air conditioning system can maintain optimum room temperature.
    Type: Application
    Filed: May 30, 2008
    Publication date: June 25, 2009
    Applicant: LG Electronics Inc.
    Inventors: Myeong Won Seo, Hee Jun Lee
  • Patent number: 7542824
    Abstract: An air conditioning control device is configured to obtain and control data on an air conditioner, which includes a plurality of indoor units. The air conditioning control device includes a data retrieval component, a data collection component, an analysis component, and an analyzed results display component. The data retrieval component retrieves air conditioner operating data including power consumption data for each indoor unit. The data collection component collects operating data at certain periods of time. The analysis component analyzes operating data for each indoor unit. The analyzed results display component visualizes and displays the analyzed data that has been analyzed by the analysis component.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: June 2, 2009
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiyuki Miki, Satoshi Hashimoto
  • Publication number: 20090113923
    Abstract: A refrigerator and a control method for the same are disclosed. The refrigerator includes a convertible storage room capable of performing a refrigerating function and a freezing function selectively or simultaneously, so as to allow a user to conveniently store a variety of food. More particularly, the refrigerator includes a body including a refrigerating storage room and a freezing storage room, a convertible storage room located between the refrigerating storage room and the freezing storage room, to selectively perform one of a freezing function and a refrigerating function, a first evaporator that cools the refrigerating storage room and a second evaporator that cools the freezing storage room and the convertible storage room selectively or simultaneously, and a cold air supply device that selectively supplies the cold air generated from the second evaporator into the freezing storage room and the convertible storage room.
    Type: Application
    Filed: October 3, 2008
    Publication date: May 7, 2009
    Inventor: Song Gye Young
  • Publication number: 20090049850
    Abstract: A pipe-connection searching apparatus and method for a multiple air conditioner. The apparatus and method involving the identification of one of a plurality of indoor units, based on temperature criteria, and matching the one indoor unit to a corresponding one of a plurality of pipes that connect an outdoor unit to the plurality of indoor units, respectively.
    Type: Application
    Filed: August 19, 2008
    Publication date: February 26, 2009
    Inventors: Min Gi Kim, Chan Ho Song, Jae Hoon Sim, Seung Woo Kang
  • Publication number: 20090025410
    Abstract: When during a first action of a refrigeration system the internal cold storage temperature is held at a desired temperature by an evaporator, the refrigeration system performs a second action of increasing the cooling capacity of the evaporator to decrease the internal cold storage temperature. When during the second action the internal cold storage temperature reaches a minimum temperature Tmin, the refrigeration system stops a compressor and performs a third action. When during the third action the internal cold storage temperature reaches a maximum temperature Tmin, the refrigeration system drives the compressor and performs the first action.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 29, 2009
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shigeto Tanaka, Noriyasu Kawakatsu
  • Publication number: 20090019879
    Abstract: A refrigerant circuit (10) operates in a refrigeration cycle in which the pressure of refrigerant discharged from a compressor (22) is at or above the critical pressure. In performing an operation in which a first indoor heat exchanger (33a) performs a heating operation and, concurrently, a second indoor heat exchanger is made inactive, an indoor expansion valve (34b) associated with the inactive indoor heat exchanger (33b) is fully closed.
    Type: Application
    Filed: March 7, 2007
    Publication date: January 22, 2009
    Inventors: Shinichi Kasahara, Takahiro Yamaguchi
  • Publication number: 20080314061
    Abstract: An air conditioning system includes a controller for controlling the feed rate of air from a blower such that the inside of the operator's cab is at higher pressure than outside pressure when a pressurization mode for pressurizing the inside of the operator's cab is selected, a branch duct opening/closing damper device is provided for distributing the air from the blower to an air outlet directed to an operator and an air outlet undirected to the operator (i.e., a defroster air outlet). Further, the controller controls the branch duct opening/closing damper device such that the air is ejected from the air outlet directed to the operator in such a volume that makes the operator have comfortable cool or warm feeling whereas the remaining volume of air is ejected from the defroster air outlet, when the difference between the inside air temperature of the operator's cab and a preset temperature becomes small.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 25, 2008
    Applicant: KOMATSU LTD.
    Inventors: Kouji NAGAMI, Masamichi Miyazaki
  • Publication number: 20080282715
    Abstract: The invention relates to a control unit for a refrigeration or air conditioning device, comprising a main processor that is situated in a housing and that controls the temperature, fan and/or the defrosting process of a refrigeration or air conditioning device. Contact points for a co-processor, which is separate from the main processor and is suitable for controlling an electronic expansion valve, are located in said housing.
    Type: Application
    Filed: April 20, 2005
    Publication date: November 20, 2008
    Inventors: Peter Aue, Ali R. Nejad, Hans-Jurgen Bersch, Bernd Kowanz
  • Publication number: 20080276635
    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: Application
    Filed: July 17, 2008
    Publication date: November 13, 2008
    Applicants: SANYO ELECTRIC CO., LTD, TOSHIBA CARRIER CORPORATION
    Inventors: AKIRA TERASAKI, KAZUTO OKITSU
  • Patent number: 7434415
    Abstract: A humidity control method is provided for a multi-stage cooling system having two or more refrigerant circuits that balances humidity control and cooling demand. Each refrigerant circuit includes a compressor, a condenser and an evaporator. A hot gas reheat circuit having a hot gas reheat coil is connected to one of the refrigerant circuits and is placed in fluid communication with the output airflow from the evaporator of that refrigerant circuit to provide additional dehumidification to the air when humidity control is requested. The hot gas reheat circuit bypasses the condenser of the refrigerant circuit during humidity control. Humidity control is only performed during cooling operations and ventilation operations.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: October 14, 2008
    Assignee: York International Corporation
    Inventors: John Terry Knight, Stephen Wayne Bellah, Stephen Blake Pickle
  • Publication number: 20080221740
    Abstract: A method of controlling the temperature inside a cavity of a cooling appliance provided with a temperature sensor inside the cavity and with an actuator for adjusting the cooling capacity of the appliance, the food temperature is estimated on the basis of a value from the temperature sensor and on a predetermined function of a status of the actuator.
    Type: Application
    Filed: September 7, 2006
    Publication date: September 11, 2008
    Applicant: Whirlpool Corporation
    Inventors: Alessandro Boer, Raffaele Paganini, Rocco Petrigliano, Paolo Sicher, Paolo Toniolo, Alessandra Suardi
  • Publication number: 20080216673
    Abstract: An underwater thawing and freezing device includes: a thawing and freezing tank for containing therein ethyl alcohol water as a thawing and freezing liquid; a plurality of wave motion piezoelectric vibration elements for generating wave motions in the thawing and freezing tank; a temperature control unit for controlling a temperature of the ethyl alcohol water at a predetermined temperature, the temperature control unit having a temperature sensor for detecting the temperature of the ethyl alcohol water; and a control unit for controlling the wave motion piezoelectric vibration elements. The plurality of wave motion piezoelectric vibration elements generate wave motions at a plurality of different frequencies. The wave motions travel at an angle of an about 10 degrees inclined from a vertical line from a surface of the thawing and freezing tank, on which the respective wave motion piezoelectric vibration elements are provided.
    Type: Application
    Filed: February 26, 2008
    Publication date: September 11, 2008
    Applicant: SHINYO Industries, Co., Ltd.
    Inventor: Shintaro Takenaka
  • Publication number: 20080209912
    Abstract: Disclosed is a container warmer that utilizes the same compartment for heating and cooling. In optional embodiments, the unit may include a programmable timer operably connected to the heating and cooling units such that the timer may regulate activity of the units. In other embodiments, the invention may include a baby bottle warmer in which the baby bottle is placed in a water bath in a compartment, the water bath being heated or cooled by heating or cooling units, and optionally operably connected to a programmable timer.
    Type: Application
    Filed: October 25, 2007
    Publication date: September 4, 2008
    Inventors: Shashank Upadhye, Shilpa M. Upadhy, Adam S. Thomas, James A. Weir
  • Publication number: 20080202136
    Abstract: The invention relates to a refrigerator unit and/or a freezer unit having a space for the reception of the refrigerated goods or frozen goods, having a fan which removes air from the space, blows air into the space or circulates the air in the space and having a control unit connected to the fan which controls the fan for the purpose of influencing the temperature distribution such that it is operated in one rotary direction in a first operating state and in the other rotary direction in a second operating state. The invention further relates to a method of operating a refrigerator unit and/or a freezer unit.
    Type: Application
    Filed: May 24, 2006
    Publication date: August 28, 2008
    Applicant: Liebherr-Hausgerate Ochsenhausen GmbH
    Inventor: Rudolf Weller
  • Publication number: 20080196441
    Abstract: An air blowing arrangement for a combined refrigerator of the forced ventilation type and that comprises: a cabinet formed by an outer case and by two inner cases spaced from each other by a thermal insulating filler and defining a freezing compartment and a refrigerating compartment; and an air diffusing element defining at least one air distributing duct, having an air inlet in communication with the interior of the inner case of the freezing compartment and a plurality of air outlets opened to the interior of the refrigerating compartment. The air diffusing element is disposed in the interior of the thermal insulating filler and seated against the rear wall of the inner case of the refrigerating compartment, said rear wall being provided with a plurality of windows aligned with respective air inlet openings of the air distributing duct.
    Type: Application
    Filed: July 11, 2006
    Publication date: August 21, 2008
    Inventors: Luiz Afranio Alves Ferreira, Moacyr Marangone Mezavila, Adriano Cargnin, Lauro Fernando Souza Ignacio Jr
  • Publication number: 20080178609
    Abstract: In one embodiment, a combined cooling and heating system comprises a hydrogen reservoir. The combined cooling and heating system may be used in an aircraft. During a charging of the hydrogen reservoir, with hydrogen, a kitchen appliance is heated, and during the discharging process, the hydrogen reservoir cools the fuel cell system.
    Type: Application
    Filed: July 24, 2007
    Publication date: July 31, 2008
    Applicant: Airbus Deutschland GmbH
    Inventors: Claus Hoffjann, Hansgeorg Schuldzig
  • Publication number: 20080156006
    Abstract: A soft freeze assembly for a refrigerator including a freezer storage compartment having a first temperature includes a second storage compartment positioned within the freezer storage compartment. A heat source is positioned with respect to the second storage compartment and configured to heat air within the second storage compartment to a second temperature greater than the first temperature within the freezer storage compartment. A controller is in operational control communication with the heat source and configured to operate the heat source.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Inventors: Tim A. Hamel, Mark W. Wilson, Alexander Pinkus Rafalovich, Sathi Bandaru
  • Publication number: 20080156032
    Abstract: A distributed refrigeration appliance system for use in a residential kitchen and other locations in a dwelling and includes multiple separate refrigeration appliance modules, a central cooling system and a cooling circuit. The system can also include one or more satellite stations having a heat exchanger and arranged for supplying chilled air to one or more refrigeration appliance modules. One or more refrigeration appliance modules can include a thermal cascade cooling device to cool the module to lower temperatures than the cooling circuit can attain. One or more refrigeration appliance modules can be refrigeration/storage modules that can provide refrigerated, unconditioned or heated storage space. The central cooling system can be a vapor compression system having a refrigerant circuit connecting the modules. Alternately, the central cooling system can cool a secondary cooling medium circuit.
    Type: Application
    Filed: June 28, 2007
    Publication date: July 3, 2008
    Applicant: WHIRLPOOL CORPORATION
    Inventors: NIHAT O. CUR, STEVEN JOHN KUEHL, JOHN JOSEPH VONDERHAAR, DIEGO BARONE, LORENZO BIANCHI
  • Publication number: 20080148748
    Abstract: A temperature control system for a vehicle that defines a load space for supporting cargo. The temperature control system includes a refrigeration unit that has a refrigeration circuit, and a heating system that has a heating circuit. The refrigeration circuit includes a prime mover and a cooling coil that selectively cools an airflow entering the load space. The heating circuit includes a pump that circulates a coolant fluid through the heating circuit, a dedicated heater that heats the coolant fluid, and a heating coil that selectively heats the airflow entering the load space. The temperature control system also includes a controller that detects conditions of the load space, and that engages one of the refrigeration unit and the heating system to condition the load space in response to the detected conditions.
    Type: Application
    Filed: December 19, 2007
    Publication date: June 26, 2008
    Applicant: THERMO KING CORPORATION
    Inventors: Herman H. Viegas, David W. Augustine
  • Publication number: 20080120187
    Abstract: A mobile cart for serving food and/or beverages is described. According to various implementations, the cart is equipped with a removable mission module. The mission module includes equipment that is used by the cart to perform its designated mission, such as an oven (for a hot food service mission module), a cooling unit (for a cold food service mission module), a beverage dispenser (for a beverage service mission module), a point of sale terminal (for duty-free service mission module), appropriate branding (for a franchising mission), or a custom equipment (for a customized mission). The mission module also includes a processor and a memory. The mission module is removable, and may be one of several mission modules available to the cart. Thus, for each type of mission, there may be a different mission module. This enables the cart to be quickly and easily “customized” for each mission by replacing an unneeded module with a required one.
    Type: Application
    Filed: December 1, 2006
    Publication date: May 22, 2008
    Applicant: B/E Aerospace, Inc.
    Inventors: Mark Edward Wesley, Timothy Andrew Birkmann, Brian Douglas Stamm
  • Publication number: 20080110187
    Abstract: An apparatus to control an air conditioner system and a method for controlling the same, in which an operational priority is given to an air conditioner or a ventilation system according to peripheral environment and a season such that the air conditioner and the ventilation system are selectively operated to provide optimum air conditioning environment. The method of controlling the air conditioner system including the air conditioner to cool and heat a room and the ventilation device to perform a ventilation operation includes detecting an outdoor temperature, determining a season by comparing the outdoor temperature with a preset reference temperature, and determining an operational priority relative to the air conditioner and the ventilation device based on the determined season.
    Type: Application
    Filed: August 21, 2007
    Publication date: May 15, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Chang Jin HAN, Seung Hee Ma
  • Patent number: 7367199
    Abstract: A method for automatically balancing air conditioning outdoor heat exchange detects a piping measured value of each piping equipment through a detection unit and compares the piping measured value with a set operation mode selected by users and a set value. Airflow amount of adjustable air vents is adjustable according to the comparing result. The method includes the steps of: (1) selecting an operation mode, (2) selecting an effective piping measured value which serves as the basis to operate an air fan device, and (3) based on the piping measured value corresponding to each exchange equipment to open the air vents at a desired degree. By means of the aforesaid method and system, the air conditioning outdoor heat exchange system can be balanced automatically.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: May 6, 2008
    Assignee: Cohand Technology Co., Ltd.
    Inventors: Kuo-Liang Weng, Jing-Ru Weng
  • Publication number: 20080034764
    Abstract: An object of the present invention is to provide an air conditioner and a controlling method thereof capable of effectively conditioning air in an operator cab of a vehicle even if a windshield or door of the operator cab is opened. The air conditioner comprises: a heating unit for heating an upper half of an operator's body; an open/close sensor for detecting opening and closing of the operator cab; and a controller for setting a heating power of the heating unit when the open/close sensor detects that the operator cab is opened, to be higher than the heating power of the heating unit when the operator cab is closed.
    Type: Application
    Filed: August 7, 2007
    Publication date: February 14, 2008
    Applicant: DENSO Corporation
    Inventor: Masami Iwasaki
  • Publication number: 20080000242
    Abstract: A refrigerator including a temperature controlled compartment partitioned from the freezer compartment and the refrigerator compartment, a door for the temperature controlled compartment, a cooling unit installed in the temperature controlled compartment for supplying cold air to the temperature controlled compartment, a duct for defining a flow passage of the cold air to circulate the cold air supplied from the cooling unit within the temperature controlled compartment, a blower fan for blowing the cold air supplied from the cooling unit through the duct, and a control unit for generating control signals to drive the cooling unit and the blower fan so as to maintain a temperature in the temperature controlled compartment at a set temperature.
    Type: Application
    Filed: March 13, 2007
    Publication date: January 3, 2008
    Applicant: DAEWOO ELECTRONICS Corporation
    Inventor: Hak Jae Jung
  • Patent number: 7308800
    Abstract: Multi-type air conditioner comprising an outdoor unit installed in an outdoor, comprising a compressor, a refrigerant flow controlling part connected to a discharge end of the compressor for guiding the refrigerant proper to operation conditions selectively, an outdoor heat exchanger connected to the refrigerant flow controlling part, a defrosting device at a side of the outdoor heat exchanger, and a piping system connected between the parts, a plurality of indoor units each installed in a room and having an indoor heat exchanger and an electronic expansion valve having one end connected to one end of the indoor heat exchanger, and a distributor between the outdoor unit and the indoor units for selectively guiding refrigerant from the outdoor unit to the plurality of indoor units proper to operation conditions, and guiding the refrigerant passed through the indoor units to the outdoor unit again.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: December 18, 2007
    Assignee: LG Electronics Inc.
    Inventors: Jong Han Park, Young Min Park, Chang Seon Lee, Sung Oh Choi, Sung Chun Kim, Seung Yong Chang, Seok Ho Yoon, Baik Young Chung
  • Patent number: 7290395
    Abstract: A high power thermoelectric controller system is disclosed, capable of operating multiple thermoelectric cooler (TEC) devices, each with a maximum power demand greater than 200 watts. The controller system utilizes interleaved triggering of multiple pulse width modulated power conversion circuits in order to minimize switching transient currents. In another aspect, the system incorporates a novel combination of a PWM controller circuit and H-bridge switching network into a single circuit that reduces the number of components needed to provide closed-loop proportional control of multiple TEC devices in a temperature control system.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: November 6, 2007
    Assignee: GentCorp Ltd
    Inventor: Jeffrey Deal
  • Patent number: 7290399
    Abstract: In a multi-circuit heat pump system least one of the circuits has a reheat function. Various reheat concepts may be independently utilized for each circuit to reheat and dehumidify air. Moreover, the ability to bypass refrigerant around the outdoor heat exchanger may also be provided. Communication means between the circuits may be present to re-optimize the refrigerant charge and to provide better control over system operational parameters. The above mentioned control functions and design features assure system flexibility in satisfying a wide spectrum of market requirements and potential applications by operation in a variety of cooling, heating and dehumidification regimes and a combination of thereof.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: November 6, 2007
    Assignee: Carrier Corporation
    Inventors: Michael F. Taras, Alexander Lifson
  • Patent number: 7287394
    Abstract: A refrigerant heat pump system is operable in both heating and cooling modes. A reheat circuit is integrated into the system schematic to provide improved control over temperature and humidity and to cover a wide spectrum of sensible and latent capacity demands.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: October 30, 2007
    Assignee: Carrier Corporation
    Inventors: Michael F. Taras, Alexander Lifson
  • Patent number: 7275384
    Abstract: A refrigerant heat pump system is operable in both heating and cooling modes. A reheat circuit is integrated into the system schematic to provide improved control over temperature and humidity and to cover a wide spectrum of sensible and latent capacity demands. In the heating mode, the reheat coil is utilized to act as a portion of the enlarged indoor heat exchanger (a condenser in this case), in order to enhance system efficiency without the capacity loss. In some cases, where the designer can choose between the efficiency and capacity augmentation, selective operation of the reheat coil may offer an additional step of capacity modulation, in the heating mode. System reliability is improved through a reduction of start/stop cycles. Although various reheat coil arrangements in relation to the indoor and outdoor heat exchangers are offered and reheat concepts are considered, the benefits of the invention are independent from and transparent to such system design features.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: October 2, 2007
    Assignee: Carrier Corporation
    Inventors: Michael F. Taras, Alexander Lifson
  • Patent number: 7204094
    Abstract: An air conditioner having a plurality of outdoor units and a plurality of indoor units with a common piping connected via a common piping to transfer refrigerant therebetween, the air conditioner including a first outdoor unit to provide heat, a second outdoor unit to defrost a heat exchanger of the second outdoor unit, and a first refrigerant guide unit in the second outdoor unit to guide a flowing direction of the refrigerant, wherein the refrigerant discharged from the first outdoor unit is circulated through the heat exchanger of the second outdoor unit.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: April 17, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Il Yong Cho
  • Patent number: 7143594
    Abstract: A method of controlling a heating cycle of a refrigeration system is provided that includes a refrigerant circuit. The refrigerant circuit includes a compressor having a suction port and an outlet having a discharge port with a hot gas compressor discharge line, a condenser for condensing the refrigerant, an evaporator for evaporating the refrigerant and an expansion valve. The method includes using refrigerant from the hot gas compressor discharge line to heat the evaporator during a heating cycle, detecting periodically a discharge superheat of the refrigerant leaving the outlet of the compressor, producing a control signal representing a difference between the detected discharge superheat and a minimum discharge superheat setpoint, adjusting the flow rate of the refrigerant to the suction port of the compressor according to the control signal so as to maintain the discharge superheat of the refrigerant at the outlet of the compressor substantially at the minimum discharge superheat setpoint.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: December 5, 2006
    Assignee: Thermo King Corporation
    Inventors: Bradley M. Ludwig, Peter W. Freund
  • Patent number: 7131283
    Abstract: Method for controlling a multi-type air conditioner having a plurality of indoor units each with an expansion valve, an indoor heat exchanger, and an indoor fan, some of which heat rooms, and rest of which are turned off, including the steps of (S11) defining a saturation temperature of refrigerant by using a heating cycle of the refrigerant, and Mollier chart, (S12) measuring a temperature of the refrigerant stagnant at the turned off indoor units, (S13) determining if a temperature difference of the refrigerant temperature and the saturation temperature is within a temperature range preset at a control part, (S14) opening the expansion valves of the turned off indoor units, if the temperature difference is within the temperature range preset at the control part, and (S15) closing the expansion valve of the turned off indoor units, if the temperature difference is not within the temperature range preset at the control part, whereby minimizing stagnation of refrigerant at turned off indoor units during some o
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: November 7, 2006
    Assignee: LG Electronics Inc.
    Inventors: Il Kwon Oh, Min Sub Shim, Jin Seob Song, Se Dong Chang, Bong Soo Park, Do Yong Ha, Seung Yong Chang
  • Patent number: 7051549
    Abstract: A refrigerator is provided which includes a variable temperature storage formed in the chilling chamber; a heating room formed on a side of the variable temperature storage; a heating device installed in the heating room and configured to generate heat; a first local circulating path in which cool air in the freezing chamber flows into a rear path through the variable temperature storage; an adjusting device configured to adjust a quantity of cool air flowing into/out of the variable temperature storage through the first local circulating path; a second local circulating path in which heated air in the heating room passes the variable temperature storage and flows into the heating room again; and a temperature sensor configured to sense a temperature in the variable temperature storage. Because various ranges of temperature can be maintained in the refrigerator, it is possible to perform optimum-temperature storing according to various kinds of foods.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: May 30, 2006
    Assignee: LG Electronics Inc.
    Inventors: Sang-Bae Kim, Sang-Ho Park, Byeong-Gyu Kang, Youn-Chul Choi
  • Patent number: 7028492
    Abstract: A hybrid dehumidification system includes a compressor, a condenser, an expansion device and an evaporator connected for flow of working fluid through a fluid circuit; a reheat coil positioned relative to the evaporator for heating at least a portion of a stream of air passing through the evaporator; and a working fluid directing system adapted to flow working fluid in at least two modes of operation selected from the group consisting of a standard cooling mode, a cooling and enhanced dehumidification mode; a dehumidification without substantial sensible capacity mode; a heating and dehumidification mode; and a dehumidification with variable sensible capacity mode.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: April 18, 2006
    Assignee: Carrier Corporation
    Inventors: Michael F. Taras, Alexander Lifson
  • Patent number: 6928831
    Abstract: The invention relates to a combined cooling plant/heat pump for use in motor vehicles for the cooling, heating and dehumidification of the vehicle interior. A refrigerant circuit is thermally coupled to the ventilation system over an internal heat exchanger having two functional units. The functional units are switchable as the condenser/gas cooler of the heat pump (in heating operation) and as the evaporator of the cooling plant (in cooling operation). In a combined dehumidification-reheating operation, one of these functional units is operable as an evaporator and the other as condenser/gas cooler.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: August 16, 2005
    Assignee: Visteon Global Technologies, Inc.
    Inventor: Peter Heyl
  • Patent number: 6923012
    Abstract: A vehicle air-conditioning system of a dual air-conditioner type exhibiting a hot gas heater function, which is designed to efficiently recover not only dormant refrigerant at the heater side, but also dormant refrigerant at the rear seat evaporator, which system sets the refrigeration cycle to a cooling mode and engages in a refrigerant recovery operation when starting up the heating mode by a hot gas heater cycle, then switches the refrigeration cycle to the heating mode, sets the front seat air-conditioning unit to the outside air mode at the time of the heating mode to blow outside air to the front seat evaporator by the front seat blower, then, when judging that the inside air temperature is high due to the refrigerant temperature of the rear seat evaporator at the time of the heating mode, operates the rear side blower to blow inside air to the rear seat evaporator.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: August 2, 2005
    Assignee: DENSO Corporation
    Inventors: Shun Kurata, Yoshiaki Takano
  • Patent number: 6877342
    Abstract: A controlled method for an energy-saving and energy-releasing air conditioning discloses the energy-saving and energy-releasing actions performed by the two adjoined heat exchangers of the storage means. The feature of this design is to meet refrigerating and heat-produced requirements by using the controlled method of the present invention. Automatically adjusting the refrigerant flow rates of the first and the second circular refrigerant loops can place it into the optimum operational condition while central air conditioner is either under high loading or under low loading condition.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: April 12, 2005
    Assignee: Cohand Technology Co., Ltd.
    Inventor: Kuo-Liang Weng
  • Patent number: 6868679
    Abstract: In a hot gas heating mode of an ejector cycle system, hot gas refrigerant discharged from a compressor is introduced to an interior heat exchanger while bypassing an exterior heat exchanger. The refrigerant discharged from the interior heat exchanger can flow into an ejector from at least an inlet of a nozzle of the ejector, and flows into the gas-liquid separator, in the heating mode. Alternatively, refrigerant discharged from the compressor can be supplied to the interior heat exchanger through a clearance between an outer wall of the nozzle and an inner wall of a nozzle housing portion, while bypassing the exterior heat exchanger in the heating mode. Here, the nozzle is disposed in the nozzle housing portion, and a part of pressurizing portion is defined by the nozzle housing portion. Thus, the heating mode can be readily performed in the ejector cycle system.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: March 22, 2005
    Assignee: DENSO Corporation
    Inventors: Motohiro Yamaguchi, Hiromi Ohta, Yukimasa Sato
  • Patent number: 6834511
    Abstract: A vehicle air conditioning apparatus includes a heater core 21 radiating heat of engine coolant to an air stream to be blown off to a vehicle compartment, a sub condenser 4 operative to radiate heat of compressed refrigerant to the air stream to be blown off to the vehicle compartment for condensing refrigerant, an evaporator 7 operative to allow expanded refrigerant by an expansion valve 6 to absorb heat of the air stream in the vehicle compartment to be evaporated, a variable displacement compressor 2 operative to compress evaporated refrigerant to be discharged to the condenser 4, a sensor 9 that detects a discharge refrigerant pressure of the compressor 2, and a compressor control means 100 operative to control a discharge refrigerant volume of the compressor 2 so as to compel a blow-off temperature to lie at a given temperature in response to a detected result of the sensor 9.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: December 28, 2004
    Assignee: Calsonic Kansei Corporation
    Inventor: Jun Hatakeyama
  • Publication number: 20040255602
    Abstract: In a vapor-compression refrigerant cycle system, a switching device is provided to switch one of a first mode where high-pressure refrigerant discharged from a compressor is directly introduced to an exterior heat exchanger and a second mode where the high-pressure refrigerant is directly introduced to an interior heat exchanger. When the second mode is set, the pressure of the high-pressure refrigerant is set higher than a predetermined pressure by a constant-pressure control valve. Accordingly, it can prevent heating capacity of the interior heat exchanger from being greatly changed even when thermal load of the vapor-compression refrigerant cycle system is changed, and heating capacity of the interior heat exchanger can be improved in the second mode.
    Type: Application
    Filed: June 16, 2004
    Publication date: December 23, 2004
    Inventors: Yukimasa Sato, Motohiro Yamaguchi, Hiromi Ohta
  • Patent number: 6831254
    Abstract: A system used to program and coordinate the cooking operations for two or more ovens such that the cooking operations are completed at the same time, independent of particular setting variations. In accordance with a preferred embodiment of the invention, a single controller is utilized to program each of the ovens, with the controller incorporating an auto sequencing feature which causes the different cooking operations to be automatically performed, while terminating at the same time. Preferably, the system enables a second cooking operation to be programmed and initiated after a first cooking operation, while still providing for the auto sequencing of the cooking operation. Furthermore, a system is provided to enable the refrigerating of food items in one or more of the ovens prior to initiating a respective cooking operation.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: December 14, 2004
    Assignee: Maytag Corporation
    Inventor: William D. Barritt
  • Patent number: 6829523
    Abstract: A method of controlling a transport temperature control unit having cooling and heating cycles for cooling and heating a conditioned space within a transport. The method includes programming a first pre-programmed control mode into the unit, configuring the unit such that a second control mode is programmable into the unit by an end user, querying the end user to select the first pre-programmed control mode or to program the second control mode into the unit, and programming the second control mode into the unit by the end user when the second control mode is desired by the end user. A transport temperature control unit for performing the same and including a first pre-programmed control mode being programmable into the unit and a second control mode being programmable into the unit by an end user.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: December 7, 2004
    Assignee: Thermo King Corporation
    Inventor: Jay L. Hanson
  • Patent number: 6823683
    Abstract: According to the method, heat delivered to the cabin (H) comes from a hot source (18) of a heat pump (12) comprising a main refrigerant circuit (14) taking heat from a cold source (16) to transfer it to the hot source (18). Heat taken from the cold source (16) comes from a flow of air recycled from the cabin. The cold source (16) has a refrigerant/coolant heat exchanger (24) thermally coupling the main circuit (14) to a first secondary coolant circuit (26) capable of being selectively connected to an outside heat exchanger (30) and to a cold heat exchanger (32). Air flow circuits have an inlet for admitting air recycled from the cabin, an outlet for delivering air to the outside of the vehicle, first connection means for connecting the recycled air inlet to the upstream end of the cold heat exchanger (32), and second connection means for connecting the downstream end of said cold heat exchanger (32) to the outside outlet.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: November 30, 2004
    Assignees: Peugeot Citroen Automobiles SA, Visteon Global Technologies, Inc.
    Inventors: Manuel Amaral, Franck Vouzelaud
  • Patent number: 6804972
    Abstract: A system and method for controlling the climate within a storage container including at least two cargo areas. The system includes one compressor, one condenser, and two evaporators. Each of the evaporators includes a crankcase pressure regulator, a gas valve and a liquid valve. The crankcase pressure regulators provide a common pressure between each of the evaporators and the compressor regardless of the pressure at the evaporator. A control system selectively actuates the gas and liquid valves according to a predefined control mode to obtain and maintain a desired temperature.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: October 19, 2004
    Assignee: Carrier Corporation
    Inventor: Hussein El-Habhab
  • Patent number: 6792766
    Abstract: A thermal zone demand controlled air conditioning fan coil unit using dual cascade arranged heat pumps, chilled water, or a combination of chilled water and hot water, with or without back up electric resistance heat strips, and having an air circulation system for circulating air to and from a plurality of thermal zones and including a conditioned air chamber having first and second heat exchange refrigerant coils or direct or reversed cycle water coils being connected in refrigerant circulating relation respectively with the heat pumps, chilled water coil. A plurality of thermal zone blowers conduct conditioned air from the conditioned air chamber to respective thermal zones of a building space. Electronic controller circuitry of the system is coupled for thermal demand control of the heat pumps and the thermal zone blowers for operation of the first heat pump during average thermal load and for operation of both heat pumps during greater thermal load.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: September 21, 2004
    Assignee: Cascade Manufacturing, L.P.
    Inventors: David Osborne, Brian Chester, Gary R. Scoggins
  • Patent number: 6751968
    Abstract: In a vehicle air conditioner, a refrigerant cycle system is constructed to switch a cooling refrigerant cycle where an interior heat exchanger is used as an evaporator, and a hot gas heater cycle where the interior heat exchanger is used as a radiator. Further, determining means of a control unit determines whether the interior heat exchanger has a quantity of retained water in a heating mode with the hot gas heater cycle. When the determining means determines that the interior heat exchanger has the quantity of retained water in the heating mode while a blower stops, operation of the heating mode is stopped. On the other hand, when the determining means determines the interior heat exchanger does not have the quantity of retained water in the heating mode while the blower stops, the operation of the heating mode is performed.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: June 22, 2004
    Assignee: Denso Corporation
    Inventor: Yoshiaki Takano
  • Patent number: 6748753
    Abstract: In the air conditioner of the present invention, both the normal cooling mode operation, in which refrigerant discharged from the compressor 1 is made to flow in the condenser 2, and the heating mode operation conducted by the hot gas bypass, in which refrigerant is made to bypass the condenser and directly flow in the evaporator 4 via the throttle 17, can be conducted. Before this heating mode operation, after the compressor is turned on for a predetermined period of time in the cooling mode, the compressor is turned off for a predetermined period of time, so that refrigerant residing in the condenser can be recovered into the hot gas cycle, and then a hot gas operation, which is the heating mode, is conducted.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: June 15, 2004
    Assignee: Denso Corporation
    Inventors: Yoshiaki Takano, Satoshi Izawa, Shun Kurata
  • Publication number: 20040107726
    Abstract: In a refrigerator including a variable temperature storage formed in the chilling chamber so as to have a certain space; a heating room formed on a side of the variable temperature storage; a heating means installed in the heating room in order to generate heat in power supply; a first local circulating path in which cool air in the freezing chamber flows into a rear path through the variable temperature storage; an adjusting means for adjusting a quantity of cool air flowing into/out of the variable temperature storage through the first local circulating path; a second local circulating path in which heated air in the heating room passes the variable temperature storage and flows into the heating room again; and a temperature sensor for sensing a temperature in the variable temperature storage, because various ranges of temperature can be maintained in the refrigerator, it is possible to perform optimum-temperature storing according to kinds of foods, and accordingly various foods can be stored more freshly
    Type: Application
    Filed: December 2, 2003
    Publication date: June 10, 2004
    Applicant: LG Electronics Inc.
    Inventors: Sang-Bae Kim, Sang-Ho Park, Byeong-Gyu Kang, Youn-Chul Choi
  • Publication number: 20040089003
    Abstract: According to the method, heat delivered to the cabin (H) comes from a hot source (18) of a heat pump (12) comprising a main refrigerant circuit (14) taking heat from a cold source (16) to transfer it to the hot source (18). Heat taken from the cold source (16) comes from a flow of air recycled from the cabin. The cold source (16) has a refrigerant/coolant heat exchanger (24) thermally coupling the main circuit (14) to a first secondary coolant circuit (26) capable of being selectively connected to an outside heat exchanger (30) and to a cold heat exchanger (32). Air flow circuits have an inlet for admitting air recycled from the cabin, an outlet for delivering air to the outside of the vehicle, first connection means for connecting the recycled air inlet to the upstream end of the cold heat exchanger (32), and second connection means for connecting the downstream end of said cold heat exchanger (32) to the outside outlet.
    Type: Application
    Filed: January 24, 2003
    Publication date: May 13, 2004
    Inventors: Manuel Amaral, Franck Vouzelaud