External Cooled Material Patents (Class 62/130)
  • Patent number: 9910076
    Abstract: A method for analysis of energy savings in an electrical network includes obtaining measurements of a plurality of measurement devices linked to loads of the electrical network over a first period of time. A unified signature that characterizes the recorded measurements during the first period of time is calculated. Measurements of the plurality of measurement devices in the electrical network are obtained over a second period of time after introduction of a modification into the electrical network. A unified signature that characterizes the recorded measurements during the second period of time is calculated. The unified signature that characterizes the measurements during the second period of time is compared with the unified signature that characterizes the measurements during the first period of time to calculate energy savings resulting from introduction of the modification.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: March 6, 2018
    Assignee: Elspec Engineering Ltd.
    Inventors: Yoram Harary, Oren Harary
  • Patent number: 9869705
    Abstract: A method of analyzing an alternating electrical current includes polling a magnetometer at a constant sampling frequency to generate a plurality of magnetic field strength readings. The polling occurs over a plurality of cycles of the alternating electrical current. A time stamp is then assigned to each of the plurality of magnetic field strength readings, and the readings are saved within a common circular buffer according to each reading's respective time stamp and the fundamental frequency of the electrical current. A processor may then determine one or more harmonics of the magnetic field by analyzing the common circular buffer using a Fourier transform.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: January 16, 2018
    Assignee: Insight Energy Ventures LLC
    Inventors: Joseph S. Wisniewski, Matthew Tilchen
  • Patent number: 9031706
    Abstract: An air conditioner and control method thereof is provided which may be controlled to adapt operation to changes in power rates. The method may include receiving electric power related information, determining whether a current power rate included in the received information is higher than a preset reference value, determining occupancy of a space to be air conditioned if the current power rate is higher than the preset reference value, and controlling a flow rate of air supplied to the space based on the determined occupancy.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: May 12, 2015
    Assignee: LG Electronics Inc.
    Inventors: Younggeul Kim, Namwoo Kwon, Jeonghyun Lim, Suyoung Kang, Juyoung Min
  • Patent number: 9016081
    Abstract: A method of cooling foodstuff comprises immersing at least one perforated container containing foodstuff into an ice slurry bath for a period of time sufficient to allow ice slurry to enter the at least one perforated container and then subsequently removing the at least one perforated container from the ice slurry bath. Various apparatuses for cooling foodstuff are also provided.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: April 28, 2015
    Assignee: Sunwell Engineering Company Limited
    Inventor: Vladimir Goldstein
  • Publication number: 20140190188
    Abstract: A refrigerator appliance is provided. The refrigerator appliance includes an ice maker having a mold body. A temperature sensor is positioned adjacent the mold body of the ice maker. Utilizing measurements from the temperature sensor, a temperature of air within a chilled chamber of the refrigerator appliance and a temperature of the mold body can both be determined, and the use of multiple temperature sensors within the chilled chamber can thereby be eliminated.
    Type: Application
    Filed: January 8, 2013
    Publication date: July 10, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Jianwu Li, Stephanos Kyriacou
  • Patent number: 8667804
    Abstract: Thermal storage air conditioner including an outdoor unit having an outdoor heat exchanger for making heat exchange, and at least one compressor for compressing refrigerant, an indoor unit having at least one indoor heat exchanger for making heat exchange, a thermal storage unit having a thermal storage tank for holding thermal storage substance therein, a thermal storage heat exchanger for receiving refrigerant from an outside of the thermal storage unit to heat exchange with the thermal storage substance in the thermal storage tank, and a securing member for securing the thermal storage heat exchanger so as to maintain the thermal storage heat exchanger submerged under the thermal storage substance in the thermal storage tank, and a functional unit for selective control of refrigerant flows among the outdoor unit, the indoor unit and the thermal storage unit according to an operation condition, thereby maintaining the thermal storage heat exchanger in the thermal storage tank securely, to prevent drop of he
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: March 11, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jae Yoon Koh, In Kyu Kim, Jin Ha Hwang
  • Patent number: 8544286
    Abstract: A monitor either usable in cooperation with or apart from a portable cooler to maintain a temperature of medications. The cooling device defines an interior volume for holding the medications, a power source including at least one of a 12 volt DC and an attachable 110 volt AC supply. A portable monitoring device is integrated with the cooling device and further includes a processor driven circuitry for recording a temperature associated with the interior volume containing the medications. The recorded temperature is compared at determined intervals to a preset programmed temperature range and, upon exceeding the programmed range, the device alerts the user. An alternative monitoring device is envisioned to ship with the medication from the manufacturer and remain with the medication container until the medications are used.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: October 1, 2013
    Inventor: Brian D. Janssen
  • Patent number: 8447541
    Abstract: Devices and methods for identifying an electrical device, and its state, in a network of electrical devices are disclosed. An energy monitoring device is programmed to identify an electrical device coupled to a power supply, and a state of the electrical device, from a change in successive measurements of the power supply. Algorithms for determining a load signature for an electrical device and its state are disclosed. A stored table of load signatures for states is used to identify devices, and states. Energy monitoring information is collected and presented to the user on a display, a remote display, or is transmitted over a network to a remote device such as a personal computer, personal digital assistant, an iPhone, a cell phone, voice mail, email, or text message.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: May 21, 2013
    Assignee: Geneva Cleantech Inc.
    Inventors: Patrick A. Rada, John H. Magnasco
  • Patent number: 8400315
    Abstract: An apparatus and method for indicating a process temperature anomaly during a power outage comprising employing a power source separate from that powering the process, setting a temperature set point; sensing presence and absence of power powering the process, sensing process temperature; and indicating to users that an absence of power was sensed and that the temperature sensed during the absence of power was below (or above) the temperature set point.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: March 19, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: William Sherman
  • Publication number: 20130055734
    Abstract: A refrigeration system for a mobile unit includes a refrigeration loop (32), an air duct (70), a sensor (34) and a shock absorption unit (36). The refrigeration loop includes a compressor, a condenser, a refrigerant regulator and an evaporator (64). The air duct directs air from an air inlet to the evaporator, which air duct is defined by first and second panels. The sensor is disposed in the air duct. The shock absorption unit mounts the sensor to and provides a limited thermal conduction path between the sensor and the first panel (22).
    Type: Application
    Filed: December 21, 2010
    Publication date: March 7, 2013
    Applicant: CARRIER CORPORATION
    Inventors: Zhigang Wu, Degang Fu, Yun Li, Stevo Mijanovic, Mark J. Perkovich, Thomas D. Radcliff
  • Patent number: 8375737
    Abstract: An ice maker for a domestic appliance comprises an ice tray, a water feed line which can be used to fill the ice tray with water, a water filter which is arranged in the water feed line such that it can be replaced, and a monitoring unit for calculating a value which is representative of the degree of wear of the filter. The monitoring unit has means for changing the representative value by a first fixed step width each time the ice tray is filled.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: February 19, 2013
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Georg Hausmann, Peter Nalbach
  • Patent number: 8196416
    Abstract: An apparatus for freezing a biological sample in a container while it moves along a cooling axis is provided. The apparatus has at least one set of two cooling plates with inner surfaces having a first plate dimension perpendicular to the axis, and a second plate dimension parallel to the axis. The inner surfaces define a passage therebetween with a width that corresponds to the container thickness and which is no larger than the first plate dimension. A method for cooling using the apparatus is also provided.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: June 12, 2012
    Assignee: Core Dynamics Limited
    Inventors: Meir Uri, Yaniv Damari
  • Patent number: 8100167
    Abstract: A method and a device for detecting an abnormality of a heat exchanger exchanging heat between a first fluid flow flowing in a conduit and a second fluid flow flowing along a flow path, said conduit and said flow path each having an inlet and an outlet, whereby the method comprises the steps of establishing at least one parameter representative of the temperature conditions of the heat exchanger, establishing a second fluid inlet temperature, establishing a parameter indicative of expected heat exchange between the heat exchanger and the second fluid, processing the heat exchanger temperature, the second fluid temperature and the parameter indicative of expected heat exchange for establishing an estimated second fluid outlet temperature, and employing the estimated second fluid outlet temperature for evaluating the heat exchange between the first and second fluids by comparing the estimated second fluid outlet temperature, or a parameter derived therefrom, with a reference value.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: January 24, 2012
    Assignee: Danfoss A/S
    Inventors: Claus Thybo, Christian Bendtsen
  • Patent number: 8049522
    Abstract: An ice thickness probe includes a longitudinally-extending probe rod, an insulator casing and a sleeve. The probe rod is fabricated from an electrically-conductive material. The insulator casing is fabricated from an electrically-insulative material and is wrapped around, is in contact with and extends along the probe rod. The sleeve is fabricated from a stiff yet resilient material and is wrapped around, is in contact with and extends along the insulator casing. The insulator casing and the sleeve are concentrically disposed about the probe rod as viewed in cross-section. An ice thickness probe assembly includes a frame structure, a reference bar and at least one ice thickness probe. An ice thickness monitoring apparatus is used in a thermal storage coil having a tank containing water and a tube disposed in the water so that, when the thermal ice storage coil is energized, ice is produced and accumulates on the tube.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: November 1, 2011
    Assignee: Evapco, Inc.
    Inventors: Davey Joe Vadder, Jeffrey Michael Kane, Arthur James Marshall
  • Patent number: 7913925
    Abstract: An apparatus and method are provided for visually displaying the present room temperature of a space, through the use of a thermostatic controller adapted for receiving a temperature input indicative of a temperature in a space, and having a housing that includes an illuminated portion thereof emitting a light having a characteristic of the light that changes as a function of the temperature in the space. In various forms of the invention characteristics of the light, such as the color or the intensity of the light, are changed as a function of the temperature in the space, to provide a visual indication indicative of the present room temperature of the space. The characteristic of the light may be changed as a function of the present room temperature, or as the difference between the present room temperature and a desired room temperature, or for other purposes.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: March 29, 2011
    Assignee: Ranco Incorporated of Delaware
    Inventor: Nicholas Ashworth
  • Patent number: 7900463
    Abstract: A method of fast freezing a food item using a freezing process that estimates a temperature value of a food item, selects from a plurality of freezing routines based on the estimated temperature, and activates the selected routine. This process is repeated until the temperature of the food item reaches a desired temperature.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: March 8, 2011
    Assignee: Whirlpool Corporation
    Inventors: Diego Barone, Carolina Biotti, Lorenzo Bianchi, Raffaele Paganini, Alessandro Boer
  • Patent number: 7866171
    Abstract: A food keeping refrigerator is provided. The food keeping refrigerator keeps food in refrigerating and freezing chambers and refrigerates and freezes the food through a cooling device. The food keeping refrigerator preserves the freshness and nutrition of food for an extended period of time by emitting appropriate light to the food stored in the refrigerating and freezing chambers of the food keeping refrigerator. The food keeping refrigerator includes a storing device that stores food keeping information, a light generating device mounted inside the refrigerating and freezing chambers that generates light and emits the light to the food, and a controller that reads the food keeping information corresponding to the food from the storing device and controls the light generating device to emit the light according to the food keeping information.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: January 11, 2011
    Assignee: LG Electronics Inc.
    Inventors: Kwan-Shik Cho, Jong-Min Shin, Eun-Jeong Kim, Eun-Young Park, Deul-Re Min, Yeon-Yi Hwang
  • Patent number: 7866170
    Abstract: A method for cooling a bottle in a freezer compartment of a refrigerator includes sensing the temperature of a zone of the freezer in which the bottle is placed, estimating the temperature of the bottle on the basis of the compressor status and of the sensed temperature of the zone, and informing the user when the estimated temperature of the bottle has reached a set value. The method can also be used for an automatically adjusted “shock freezing” process for any kind of food.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: January 11, 2011
    Assignee: Whirlpool Corporation
    Inventors: Alessandro Boer, Raffaele Paganini, Enrico Bellinetto, Cristiano Pastore, Fabio Gastaldello, Teresa Vitale
  • Patent number: 7765818
    Abstract: A refrigeration unit and diagnostic method therefore are provided. The refrigeration unit includes: a housing with an insulated cavity for storing food and beverages; a vapor cycle system operative to cool the food and beverages in the insulated cavity; a plurality of sensors in communication with the vapor cycle system and outputting data relative to the vapor cycle system; and a controller that, according to the data from the plurality of sensors, determines an occurrence of an event. Wherein the controller logs the data from the plurality of sensors to a data structure according to a first data-logging mode, and logs the data to the data structure according to a second data-logging mode upon occurrence of the event. In one embodiment the refrigeration unit may be a refrigeration line replaceable unit (LRU) configured for an aircraft galley.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: August 3, 2010
    Assignee: B/E Aerospace, Inc.
    Inventor: Gilbert Walter Buck
  • Patent number: 7621138
    Abstract: Disclosed are an abnormal state detecting apparatus of a multi-type air conditioner and a method thereof. The method comprises: a user's selecting a test operation, and then detecting plural indoor temperatures of indoor zones where a plurality of indoor units are installed and plural outdoor temperatures of outdoor zones where a plurality of outdoor units are installed; selecting a corresponding test operation mode among a plurality of test operation modes preset according to an average indoor temperature of the detected plural indoor temperatures and an average outdoor temperature of the detected plural outdoor temperatures; test-operating the multi-type air conditioner according to the selected test operation mode, and collecting data showing an operation state of the test-operated air conditioner; and comparing the collected data with a preset reference data and judging an abnormal state of the multi-type air conditioner based on the comparison result.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: November 24, 2009
    Assignee: LG Electronics Inc.
    Inventors: Yoon-Been Lee, Se-Dong Chang, Song Choi, Baik-Young Chung
  • Publication number: 20080250797
    Abstract: A refrigerator includes at least one refrigerated compartment and a food product management system. The food product management system includes a container for storing foodstuffs in the at least one refrigerated compartment. The container includes a storage zone and a lid. A tag is arranged on the container to provide a consumer with an indication of whether a food item stored in the container is or is not spoiled. The tag can include a timer having a display, an indicator that changes state upon the passage of a predetermined time period and a computer that notifies a consumer, such as through an email, about a parameter associated with the food item in the container. The tag is affixed to the container with adhesive, snaps, clips, hooks and the like or, alternatively, simply integrally formed with the container.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 16, 2008
    Applicant: WHIRLPOOL CORPORATION
    Inventors: JOEL ROZENDAAL, John Francis Broker
  • Publication number: 20080066475
    Abstract: The present invention discloses a food keeping refrigerator which can preserve the freshness and nutrition of foods for an extended period of time by emitting appropriate light to the foods stored in storing units. The food keeping refrigerator which keeps foods in a refrigerating chamber and/or a freezing chamber and refrigerates and/or freezes the foods through a cooling unit includes: a storing means for storing food keeping information; a light generating means mounted on the refrigerating chamber and/or the freezing chamber, for generating light and emitting the light to the foods; and a control unit for reading the food keeping information corresponding to the foods from the storing means, and controlling the light generating means to emit the light according to the food keeping information.
    Type: Application
    Filed: September 20, 2006
    Publication date: March 20, 2008
    Inventors: Kwan-Shik Cho, Jong-Min Shin, Eun-Jeong Kim, Eun-Young Park, Deul-Re Min, Yeon-Yi Hwang
  • Patent number: 7293422
    Abstract: A refrigerator having a removable shelf with a user interface for setting the working conditions of a refrigerator compartment. The user interface also being able to transmit the working conditions to a control unit of the refrigerator. The refrigerator having a package to be inserted in the refrigeration compartment, the package supporting a plurality of inductors for receiving and transmitting data to the user interface.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: November 13, 2007
    Assignee: Whirlpool Corporation
    Inventors: Davide Parachini, Matteo Santinato, Davide Braggion, Riccardo Allera
  • Patent number: 7272943
    Abstract: Disclosed herein is a control method for a multiple heat pump. In the control method, when one of multiple indoor units operates in the heating mode and the other indoor units shut down, electronic expansion valves of the shutdown indoor units are controlled to have an opening degree higher than a standard opening degree if an outlet temperature of compressors is higher than a preset temperature, so as to permit a liquid refrigerant, remaining in the shutdown indoor units, to be more readily recovered to the compressors. This eliminates a refrigerant shortage phenomenon of the compressors and prevents deterioration of heating performance as well as reduction of life-span of the compressors.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: September 25, 2007
    Assignee: LG Electronics Inc.
    Inventors: Il Nahm Hwang, Sai Kee Oh, Yoon Been Lee, Se Dong Chang
  • Patent number: 7178349
    Abstract: A system and method for switching a communication mode of a detachable pad refrigerator, wherein the attachment/detachment of a client pad to/from the refrigerator is sensed and the communication mode of the refrigerator with the client pad is switched to a wired/wireless communication mode according to the sensed result so that signals can be transmitted and received in the switched communication mode. The client pad is detachably attached to the outer surface of the refrigerator. A communication module is installed in the refrigerator to transmit and receive signals to/from the client pad by wire or wirelessly. A refrigerator control unit is adapted to control the communication module to automatically switch the communication mode of the refrigerator with the client pad to the wired/wireless communication mode according to the attachment/detachment of the client pad.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: February 20, 2007
    Assignee: LG Electronics Inc.
    Inventors: Young Hoon Roh, Jung Ho Kim, Jin Cheol Cho, Jae Won Chang, Sang Hyuk Kang, Sang Mahn Kim, Pan Su Kim, Kwang Hui Hong
  • Patent number: 7146819
    Abstract: The invention relates to a method of refrigerant level monitoring in a refrigerant circuit of an air-conditioning or heat-pump system having a compressor and a refrigerant which may, depending on the operating point, be operated in the supercritical range. The method includes standstill level monitoring with the compressor switched off and/or in-operation level monitoring with the compressor switched on. In the case of in-operation level monitoring, the refrigerant overheat (dTü) at the evaporator is registered and, in the event of excessive overheat, it is concluded that there is underfilling. At a standstill, the pressure and temperature of the refrigerant are registered, and it is concluded that there is an improper refrigerant filling level if the pressure (pKM) lies below a minimum pressure value (pmin) or the temperature (TKM) lies above a maximum saturation temperature value (TS) with the pressure being outside a predefinable intended pressure range ([pu,po]).
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: December 12, 2006
    Assignee: BEHR GmbH & Co.
    Inventors: Walter Demuth, Rainer Heilig, Volker Kirschner, Martin Kotsch, Hans-Joachim Krauss, Hagen Mittelstrass, Harald Raiser, Michael Sickelmann, Karl-Heinz Staffa, Christoph Walter
  • Patent number: 7108194
    Abstract: A thermostat remote control system includes a transmitter/receiver unit hard wired to a building climate control thermostat and a remote control unit that communicates with the hard-wired transmitter/receiver unit via wireless signals. The remote control unit includes braille labels associated with the control elements and further includes sound generators that generate audible signals that correspond to the temperature sensed by the thermostat and that also correspond to actions taken using the remote control.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: September 19, 2006
    Inventor: Robert E. Hankins, II
  • Patent number: 7069734
    Abstract: A method and apparatus for detecting surge in a refrigeration system that includes a centrifugal compressor having an impeller and a compressor entrance, an evaporator that receives a fluid refrigerant, a suction line that flows the refrigerant from the evaporator to the compressor entrance. The evaporator includes a heat-exchange coil supplied with a liquid through a supply line entering the evaporator. The liquid is disposed in a heat-exchange relationship with the refrigerant within the evaporator. The method and apparatus automatically and periodically performing the steps of measuring a fluid temperature of the liquid proximate the supply line entering the evaporator; measuring a refrigerant temperature of the refrigerant proximate the compressor entrance; and using the fluid temperature and the refrigerant temperature to detect surge in the refrigeration system.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: July 4, 2006
    Assignee: AAF-McQuay Inc.
    Inventor: John C. Knopp
  • Patent number: 7032393
    Abstract: Methods and apparatus are provided for controlling the climate cooling in the passenger cabin of a hybrid motor vehicle. The apparatus includes an internal combustion engine capable of being started and temporarily stopped, an air conditioning compressor and a dedicated electric compressor motor coupled to drive the air conditioning compressor. Moreover, sensors are coupled to monitor selected parameters associated with the motor vehicle. An electronic controller is coupled to the internal combustion engine, the compressor motor and the sensors. The engine when running operates the compressor to provide cabin climate cooling. The controller responds to the selected parameters to selectively drive the compressor motor to selectively drive the compressor when the engine is temporarily stopped so that the climate cooling continues to be supplied to the cabin if certain monitored conditions are met.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 25, 2006
    Assignee: General Motors Corporation
    Inventors: Goro Tamai, William L. Aldrich, III
  • Patent number: 6976368
    Abstract: A thermal sensor (20) located in the centre of a food simulant composition (24) linked to a remote measuring indicating and/or regulating device (28). The temperature of the food simulant changes in the same way as food stored in its vicinity and is unaffected by the movement of the ambient air which varies in temperature dramatically. This allows an actual reading and recording of stored food temperature and the regulation of the temperature within a refrigerated space by a thermostat (16). Its uses are mainly for frozen, chilled and refrigerated food, and the reading of temperature of food cooked for example in micro-wave ovens.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: December 20, 2005
    Assignee: Universal Master Products Limited
    Inventors: Andre Lamstaes, Guy Lamstaes, Harry Banham
  • Patent number: 6951306
    Abstract: The invention is directed to temperature control system in which a temperature control apparatus for controlling the operation of at least one temperature-modifying device may include a thermostat housing; a controller to control the operation of the temperature modifying device in response to the electronic comparison of a measured ambient temperature with at least one set point temperature; and display for displaying information received from the controller; wherein the display may be oriented in a plurality of positions, allowing the thermostat housing to be mounted in a plurality of positions. In one embodiment, the display may be oriented in at least two positions that are rotated ninety degrees from each other using a jumper located in the controller.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: October 4, 2005
    Assignee: Lux Products Corporation
    Inventor: Michael R. DeLuca
  • Patent number: 6892546
    Abstract: A system and method for monitoring the food product and refrigeration system performance of a remote location includes a management center in communication with a remote location through a communication network. The management center receives performance information of the refrigeration system at a remote location. The management center employs software modules to analyze the performance information, diagnose system conditions, and provide alarms for food safety and quality issues, refrigeration system component failure, and indicate maintenance conditions.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: May 17, 2005
    Assignee: Emerson Retail Services, Inc.
    Inventors: Abtar Singh, Paul Wickberg, Thomas J. Mathews, Neal Starling
  • Patent number: 6845627
    Abstract: An aircraft galley air cooling system utilizes a controller having software for regulating the temperature within food carts within a galley air cooling unit. The cooling unit includes supply air and return air temperature sensors which measure the temperature of the air entering and exiting the food cart. The return air temperature is regulated by controlling the amount of a liquid refrigerant that flows through a heat exchanger within the cooling unit. If the return air temperature sensor fails, then the controller regulates the supply air temperature. The controller also regulates defrosting of the cooling unit.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: January 25, 2005
    Assignee: BE Intellectual Property, Inc.
    Inventor: Gilbert W. Buck
  • Patent number: 6845628
    Abstract: A temperature control device including a temperature sensor which senses a temperature at a specified location within the refrigeration apparatus. The temperature control device has first flow valve that is operable to selectively increase or decrease the flow of refrigerant in response to the temperature sensed by the sensor. In addition, the device has a second flow valve that is operable to selectively increase or decrease hot gas flow in response to the temperature sensed by the sensor. The temperature control device also contains a controller which controls the above mentioned valves in response to the temperature sensed by the temperature sensor.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: January 25, 2005
    Assignee: Kendro Laboratory Products, LP
    Inventor: Chuan Weng
  • Patent number: 6789392
    Abstract: A refrigerated appliance includes a power interrupt system for detecting an out-of-range temperature condition in a fresh food or freezer compartment after a power interruption. The power interrupt system includes a central processor including a memory storage module and a plurality of temperature sensors. In operation, the power interrupt system compares sensed temperature values with stored temperature variables. If, after a power interruption, a compartment temperature exceeds a stored temperature variable by a defined amount, an over-temperature flag is triggered. Preferably, a display unit flashes an indication of the highest temperature reached by each compartment intermittently with the current compartment temperatures and an indication that a power interruption has occured. In this manner, a consumer can make an informed determination whether food stored within the appliance has been exposed to temperatures high enough to cause spoilage.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: September 14, 2004
    Assignee: Maytag Corporation
    Inventors: Alvin V. Miller, Joseph H. Ryner, Kyle B. VanMeter, Robert L. Wetekamp
  • Publication number: 20040163395
    Abstract: A vehicle air conditioner includes a non-contact temperature sensor for detecting a temperature in a predetermined area of a passenger compartment in non-contact, an air conditioning unit that controls an air conditioning state in the passenger compartment based on at least the temperature detected by the non-contact temperature sensor, and an air conditioning ECU for controlling the air conditioning unit. The ECU determines whether the temperature detected by the non-contact temperature sensor is abnormal, and informs a determination result to a user by using a light emitting diode. Thus, it is possible to notify the user whether the temperature detected by the non-contact temperature sensor is abnormal. The determination whether the detected temperature of the non-contact temperature sensor is abnormal can be performed by using at least one of the temperature detected by the non-contact temperature sensor and an environment condition.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Inventors: Yoshinori Ichishi, Tatsumi Kumada
  • Publication number: 20040148949
    Abstract: A refrigerator having a removable shelf with a user interface for setting the working conditions of a refrigerator compartment. The user interface also being able to transmit the working conditions to a control unit of the refrigerator. The refrigerator having a package to be inserted in the refrigeration compartment, the package supporting a plurality of inductors for receiving and transmitting data to the user interface.
    Type: Application
    Filed: January 15, 2004
    Publication date: August 5, 2004
    Inventors: Davide Parachini, Matteo Santinato, Davide Braggion, Riccardo Allera
  • Publication number: 20040083744
    Abstract: A method and system for detecting a low-charge condition in a dual-output vehicle air conditioning system. A program reads a set of evaporator, driver-side, and passenger-side temperatures for the purpose of adjusting a temperature in a vehicle passenger compartment. A diagnostic program then analyzes these same readings to determine whether a temperature differential condition exists. Assuming a temperature differential condition exists, the program records a set of the temperature sensor readings and a time period for these temperature readings. The diagnostic program compares this set of information with a set of stored data to determine whether a low-charge condition exists.
    Type: Application
    Filed: November 4, 2002
    Publication date: May 6, 2004
    Applicant: Visteon Global Technologies, Inc.
    Inventor: Shane A. Harte
  • Patent number: 6726112
    Abstract: A thermostat for a HVAC system with visual display of status and operating condition. The thermostat has a power switch to select one of Heater and Cooler for the HVAC system, a light sensor (200) to sense ambient lighting, a temperature sensor (210) to sense ambient temperature, a manual temperature switch (260) to set a desired temperature for the room, a control circuit (220) to select a preferred temperature based on selection of the power switch, an illuminating outer cover (110), which at least partially covers the outside of the thermostat, which displays one of Blue and Red colors according to selection of the power switch and the ambient lighting, and a plurality of LED displays (140) arranged on a display face of the thermostat, to display one arrangement of the LEDs based on a difference between the preferred temperature and the ambient lighting.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: April 27, 2004
    Inventor: Joseph Ho
  • Publication number: 20040035124
    Abstract: A cold storage monitor or indicating audibly, visually, or both; when a predetermined temperature in the cold storage apparatus is reached. The monitor may include a power supply, a temperature gauge, an audible alarm coupled to the power supply, a visual alarm coupled to the power supply, where the audible and visual alarms activate when the temperature gauge measures the predetermined temperature.
    Type: Application
    Filed: August 22, 2003
    Publication date: February 26, 2004
    Inventors: Jack Nicklas Lucas, Fredric Joseph Lucas
  • Patent number: 6593766
    Abstract: A method for estimating the duration of the interruptions in the supply from the electric mains in an electric appliance having an electronic control, in particular a household appliance, includes the steps of (a) on the occasion of an interruption of the supply voltage of the apparatus, measuring and storing the value of at least one quantity that is characteristic of the operating status of the apparatus; (b) on the occasion of the restoration of the supply voltage, measuring the current value of the at least one characteristic quantity; (c) comparing the stored value and the current value of the at least one characteristic quantity; and (d) estimating, on the basis of the comparison, the duration of the interruption of the supply voltage.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: July 15, 2003
    Assignee: WRAP SpA
    Inventor: Valerio Aisa
  • Patent number: 6564561
    Abstract: A system for displaying a temperature of a refrigerator compartment including at least one temperature sensor is provided that emulates the function and behavior of a thermostat to control and display refrigerator compartment temperature in a simple and intuitive manner. The system includes a controller including a processor and a memory and operatively coupled to the temperature sensor. A human machine interface board includes a display and is coupled to the controller and configured for receiving user input of a refrigerator compartment setting. The controller is configured to accept a set temperature of the at least one compartment, monitor actual temperature of the compartment; and display a damped temperature value based on operating conditions of the refrigerator.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: May 20, 2003
    Assignee: General Electric Company
    Inventors: Wolfgang Daum, Steven Gray, John S. Holmes
  • Patent number: 6526766
    Abstract: A temperature controller is in a position at a height of 130 cm or more from a base surface settling, of which the refrigerator is settled, on a door of the refrigerator, which position is on an upper side of a handle for opening and closing the door. Further, a minute control depending on a preserving condition of foods, the seasons, a quantity of the foods, and so on is made possible.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: March 4, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshie Hiraoka, Keiji Ohya
  • Patent number: 6481224
    Abstract: A vacuum fluorescent iconographic display (10) operable to communicate the operating conditions of a low temperature refrigeration unit (5), with the display (10) using only intuitively recognizable pictorial iconic elements (12), numeric elements (14), and recognized symbolic elements (16) to convey the information. The iconic elements (12) unambiguously represent the various operating conditions without reliance on legends or other conventional written or spoken language, thereby avoiding translation or interpretation mistakes due to the use of such a conventional language in a possibly international product or multi-lingual situation. The iconic elements (12) may also be used in diagnostic applications by lighting, for example, in combination with the numeric elements (14) to communicate quantitative diagnostic measurements of the subsystem represented by the icon.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: November 19, 2002
    Assignee: Kendro Laboratory Products, Inc.
    Inventors: Bryan M. Elwood, Robert D. Lehman, III
  • Patent number: 6453687
    Abstract: A unit is attached to a refrigeration appliance, such as a freezer, or refrigerator, to alert the user of a sensed condition within the appliance that food spoilage may occur. The unit can monitor temperature within the compartment and determine how long until food spoilage occurs. The unit also can alert a user, monitoring service, or call a repairperson. The unit may be retrofit into existing appliances.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: September 24, 2002
    Assignee: Robertshaw Controls Company
    Inventors: John N. Sharood, D. Mitchell Carr
  • Patent number: 6453692
    Abstract: A method for controlling a refrigerator constructed with a main body formed with a storage compartment accommodating therein food, a door opening and closing the storage compartment, a temperature sensor provided within the main body, by detecting a temperature of the main body, cooling is provided to the main body to cool the storage compartment in steps of establishing a control temperature of the temperature sensor to correspond to the temperature of the storage compartment; and continuously operating the cooling means until the temperature detected by the temperature sensor reaches the control temperature at an initial operation state. With this configuration, because the compressor is continuously operated until the temperature detected by the temperature sensor reaches the control temperature, the rate of cooling the stored food is enhanced and at the same time a desired storage temperature is achieved.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: September 24, 2002
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Kyoung-tae Kim, Hee-soo Lee
  • Patent number: 6442953
    Abstract: The present application reveals a method and an apparatus for diagnosing performance of an air-conditioning system. The method comprising the steps of determining a temperature differential between inlet and outlet temperatures of a condenser in the air-conditioning system; determining a temperature differential between inlet and outlet temperatures of an evaporator in the air-conditioning system; determining a temperature differential between ambient and vent temperatures in the air-conditioning system; analyzing the differentials of the condenser, evaporator and ambient and vent temperatures; determining whether the air-conditioning system is properly functioning; and diagnosing performance of the air-conditioning system.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: September 3, 2002
    Assignee: UView Ultraviolet Systems, Inc.
    Inventors: Phil Trigiani, Tony Ferraro, Ronald Lee Wheeler
  • Patent number: 6415615
    Abstract: An arrangement of apparatus for the measurement of the quantity amount of ice in an ice thermal storage system having a storage tank with a storage fluid and a cooling coil assembly therein, and the method for measuring such ice quantity, which apparatus includes a means to provide an uplift force to the coil assembly and, means for measurement of the vertical displacement of the coil in the storage tank and means for relating the vertical displacement of the cooling coil assembly to the quantity of ice on the cooling coil assembly, and further noting a specific uplifting force assembly for use in such storage tanks.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: July 9, 2002
    Assignee: Baltimore Aircoil Company, Inc.
    Inventors: William T. Osborne, Gary D. Smith
  • Patent number: 6370891
    Abstract: A heating, ventilation, air conditioner (HEVAC) test system which includes a test unit which determines the temperature of the air exhausted from a HEVAC unit, an ambient temperature unit, and a work cell controller, all of which can be wirelessly interconnected into a network. The vehicle HEVAC unit is tested and passed or failed in accordance with the ambient temperature and the time it takes for the HEVAC exhaust air to vary a predetermined number of degrees. A test probe is also disclosed which ensures proper placement of the temperature sensor and maintains proper placement of the temperature sensor over the test period.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: April 16, 2002
    Assignee: DaimlerChrysler Corporation
    Inventors: Maureen L Marshall, Djura Vudrag, Dennis K Rideout, Ray E Currier, Jr.
  • Patent number: 6311509
    Abstract: In a chiller, an apparatus and method for automatically identifying a temperature probe for use in a chilling operation is provided in order to reduce user error. In the place of manual selection by a user, automatic selection of the appropriate temperature probe is accomplished by comparing the temperature of the given temperature probe to a threshold temperature. An additional apparatus and method for filtering a displayed compartment temperature is provided to reduce user confusion. The responsiveness of the displayed temperature to temperature changes in the compartment is reduced when the compartment door is opened.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: November 6, 2001
    Assignee: Premark FEG L.L.C.
    Inventors: Richard W. Cartwright, Al D. Smith, Walter J. Boryca, David Charles Edelmann