Combined Radiator And Apartment Controlled Patents (Class 236/37)
  • Patent number: 9597944
    Abstract: An automotive air conditioning system comprising: an air cooling circuit including a compressor, a condenser, an expansion valve and an evaporator; an air heating circuit, including a flow rate regulation solenoid valve arranged to regulate the flow rate of a heat transfer fluid through the heater; and an electronic control unit. The electronic control unit is configured to receive a measured evaporator air temperature and a set cabin air temperature and to switch the operating condition of the compressor when the measured evaporator air temperature is higher or lower than at least one on/off threshold temperature computed based on the set cabin air temperature.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: March 21, 2017
    Assignee: C.R.F. Societa' Consortile per Azioni
    Inventors: Rossella Marco, Walter Ferraris, Carloandrea Malvicino, Carlo D'Ambrosio
  • Patent number: 9127865
    Abstract: An air conditioning system includes a compressor, an outdoor heat exchanger that discharges evaporated refrigerant, and a first pipe coupling the outdoor heat exchanger and the compressor, where the first pipe allows the outdoor heat exchanger to receive at least a portion of the compressed refrigerant from the compressor.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: September 8, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Song Choi, Yun Ho Ryu, Baik Young Chung, Kyung Won Seo
  • Patent number: 8055392
    Abstract: An electronic device includes a deviation value calculation unit which calculates a deviation value from the normal boundary of the relationship between a power index associated with the driving power and the measured rotational speed of the fan, a clogging detection unit which detects, based on the deviation value, clogging in an air duct through which the fan takes in air outside the case and sends it to the radiator, and a deviation value correction unit which corrects the deviation value in accordance with aging of performance of the fan to compensate for deterioration of the clogging detection capability of the clogging detection unit caused by the aging.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: November 8, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideo Kitamura, Kenji Hirohata, Katsumi Hisano, Tomonao Takamatsu
  • Patent number: 7661469
    Abstract: A method of cooling a plurality of devices operated in parallel and heated by relatively long duration pulses using a single coolant flow channel to the devices in series that transports the heat from the several devices in a contiguous series of heat pulses to the heat exchanger.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: February 16, 2010
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: James P. O'Loughlin
  • Patent number: 7131490
    Abstract: A fan coil controller for a hot and cold water system of a building that turns off the fan while the hot water and cold water coils are flushed. A fan coil control circuit is configured to periodically and temporarily operate a hot water flow control circuit and a cold water flow control circuit to cause a flushing of the hot and cold water system and simultaneously provide a signal to a fan control circuit to prevent the thermostat enabling the fan during flushing of the hot and cold water system.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: November 7, 2006
    Assignee: T.K.M. Contracting and Metal Industry Ltd.
    Inventor: Kenneth E. Roskewich
  • Patent number: 6699022
    Abstract: A vacuum exhaust apparatus includes an oil-sealed rotary pump with a gas inlet for taking a gas into the pump. The gas inlet has a gas inlet flange to join with a flange of a gas inlet pipe for guiding the gas to the pump. An oil supply section connects with the gas inlet pipe and supplies an oil into the gas inlet pipe.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: March 2, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Izawa
  • Patent number: 6037567
    Abstract: A vehicle air-conditioning system includes electric heating devices to accelerate a rise in temperature of air for heating a passenger compartment by accelerating a rise in temperature of warm water used to heat the air and by directly heating the air. Electric heating devices are built into a heat exchanger for heating so that the devices can release heat into surrounding air through radiating fins. When the system is in a heating operation region and the temperature of warm water available to flow through the heat exchanger is below a set temperature T.sub.2, the electric heating devices are turned on. A blower for blowing heating air into a passenger compartment through the heat exchanger is stopped, and a warm water valve is opened to allow the warm water to flow through the heat exchanger, whereupon heat from the electric heating devices is released through the radiating fins into the warm water inside the heat exchanger. When the temperature of the warm water rises above the set temperature T.sub.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: March 14, 2000
    Assignee: Denso Corporation
    Inventors: Yoshimitsu Inoue, Koji Takahashi, Hajime Ito
  • Patent number: 6016966
    Abstract: In an air conditioning system for controlling the temperature of a vehicle passenger compartment, a valve is disposed in a fluid passageway for controlling an amount of the engine coolant flowing toward the heat exchanger. A sensor device senses an air temperature for the air flow through the heat exchanger and generates an electrical sensor signal indicative thereof. A temperature selector selects a target temperature of the air flow through the heat exchanger and generates an electrical set signal indicative thereof. A control circuit controls opening of the valve by integrating a feed-back control and a feed-forward control based on the electrical sensor signal and the electrical set signal.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: January 25, 2000
    Assignee: Sanden Corporation
    Inventor: Atsuo Inoue
  • Patent number: 5904292
    Abstract: The present invention relates to a modulating fluid control device for a fluid-based heating and cooling system for a measured environment. The control device comprises a body, a fluid entry port and a fluid exit port and a valve with actuator located between the ports. In the case of three-way valves a bypass port is also provided thus becoming a mixing or diverting valve. The valve is responsive to input from a sensor and controller to restrict or permit the flow of fluid through the valve dependent upon conditions in the measured environment. The improvement is characterized in that the control device is provided with: (a) a valve controller and means associated therewith to position the valve and thereby regulate the flow of fluid through that valve, and (b) flow detection means associated with the valve to measure the flow of fluid at a location in the system and provide to the valve controller a feedback signal representative of that flow rate.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: May 18, 1999
    Inventor: Douglas S. McIntosh
  • Patent number: 5809790
    Abstract: An operation control device for a refrigerator which can maintains freshness of food and drink for a long time by supplying a cold-storage room with cool air remaining in an evaporator by opening a cold-storage room damper and driving a fan motor until a present temperature of the evaporator sensed by an evaporator temperature sensor is above the temperature of the evaporator sensed while the driving of a compressor motor is stopped, by a predetermined temperature if the present temperature of the cold-storage room sensed by a cold-storage room temperature sensor is above a predetermined temperature set in the cold-storage room while the driving of the compressor motor is stopped.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: September 22, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Woon Kwon
  • Patent number: 5622221
    Abstract: An integrated zoning circulator includes a priority controller, integral with the zoning circulator, for determining the priority given to the circulator in an individual zone of a multi-zone hydronic system. The zoning circulator also includes a priority circulator system for a multi-zone hydronic system having a zoning circulator at each zone, a plurality of control boxes each having a thermostat, one control box being associated with each circulator, and, a plurality of priority controllers, one priority controller being associated with each control box. Each priority controller, when activated, functions to assure that when the associated thermostat calls for the circulator to operate, other circulators in non-priority mode are prevented from operating simultaneously.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: April 22, 1997
    Assignee: Taco, Inc.
    Inventors: Richard A. Genga, Jr., Hamid Pishdadian, Michael McCarthy
  • Patent number: 5592989
    Abstract: An electronic thermostat having high and low voltage control capability and varied functional capabilities. The thermostat is particularly suited for use with fan coil heating and cooling units. Specifically the thermostat uses relays to actuate external devices such as heating and cooling equipment, fans and dampers. The use of relays permits control voltages for these external devices to be different (e.g. 24 VAC, 208-230 VAC or 277 VAC).
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: January 14, 1997
    Assignee: Landis & Gyr Powers, Inc.
    Inventors: Michael Lynn, Alan Morris, Richard A. Perry, June R. Carper
  • Patent number: 5564625
    Abstract: A method for controlling the temperature of an interior, particularly for a motor vehicle immediately sets the desired temperature of the inflowing medium by way of PI control in a starting phase only if the initial interior-temperature error values are small. With larger initial control imbalances, an offset desired temperature for the medium acting thermally on the interior is first of all set such that the interior-temperature error is counteracted to the maximum extent by the inner control loop. The range of small interior-temperature errors is thus regained as rapidly as possible, after which PI control is carried out.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: October 15, 1996
    Assignee: Mercedes-Benz AG
    Inventor: Wolfgang Straub
  • Patent number: 5460221
    Abstract: A thermostat capable of accommodating primary and secondary loads is taught. Preferably a hydronic valve actuator is the primary load and a fan coil of variable speed is the secondary load. Temperature sensing is electronic and both heating and cooling as well as multiple fan modes are accommodated.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: October 24, 1995
    Assignee: Honeywell Inc.
    Inventors: Kevin J. Stalsberg, James E. Ingalls
  • Patent number: 5307990
    Abstract: Furnace control for a forced air furnace utilized in multi-zone heating. The forced air furnace is made up of return ducts, a heat exchanger, warm air ducts, a circulation blower, and a burner. The forced air furnace receives heating requests from external control means wherein the furnace provides heat to a zone or multiple zones to be heated. The control for the furnace comprises a temperature sensor for sensing the temperature of the heat exchanger, a regulator for regulating the burner to hold the temperature at the heat exchanger constant during the on cycle of the furnace, a pressure sensor for measuring the pressure in the heat exchanger and a controller for controlling the circulation blower in order to maintain a constant pressure within the heat exchanger.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: May 3, 1994
    Assignee: Honeywell, Inc.
    Inventors: Wilmer L. Adams, Ralph H. Torborg
  • Patent number: 5261483
    Abstract: A control system for a fan coil of an air-conditioner having a fan for heat exchange, and a coil unit through which cool or hot water circulates to cool or heat the room by heat exchange with the room air, wherein an automatic change is carried out between a cooling operation and a heating operation, referring to the temperature of distributed cool or hot water detected by a water temperature sensor, and a room temperature is controlled by opening or closing an electromagnetic valve disposed in a water distribution system, referring to a room temperature detected by a room temperature sensor. When the system is turned on from its inoperative state, the electromagnetic valve is forcibly opened for a predetermined period of time for the control system for a fan coil to sufficiently detect the temperature of cool or hot water, and to prevent an erroneous change of operation.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: November 16, 1993
    Assignee: Kabushiki Kaisha Toyo Techno Corp.
    Inventor: Akihiro Imaoka
  • Patent number: 5209398
    Abstract: A temperature control system and method for maintaining the temperature of air within an air pressure controlled enclosure at a desired temperature. The system uses an energy flow model to determine the temperature to which the air supplied to the enclosure must be heated to attain the desired temperature within the enclosure. The energy flow model determines the desired supply air temperature based on the temperature and flow rate of the supply air, the current temperature of the air in the enclosure, the heat transfer rate within the enclosure, and the temperature and flow rate of make-up air entering the enclosure.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: May 11, 1993
    Assignee: Johnson Service Company
    Inventor: Kirk H. Drees
  • Patent number: 4599992
    Abstract: A hot water heating system for a building has a hot water storage tank, a combustor, a burner for firing the combustor, a plurality of radiators, a pump for circulating hot water to and from the plurality of radiators, a first thermostat for measuring the temperature of the hot water in the storage tank and for controlling the burner in response to such temperature, a heat exchanger in the storage tank, a cold water inlet line, and a hot water outlet line. The improvement comprises a cold water heating element arranged around a portion of the inlet line, a temperature sensing element arranged in close proximity to the heating element, and a second thermostat for anticipatorily controlling firing of the combustor by the burner via the first thermostat. Also, the second thermostat, via an electrical line, shuts off the pump when the second thermostat is causing firing of the combustor by the burner.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: July 15, 1986
    Inventor: John W. Harding
  • Patent number: 4550833
    Abstract: A variable-volume receptacle, especially for use as a compensating receptacle in heating systems. The receptacle includes two membrane-like sheets of rubber or synthetic material; the sheets have the same surface areas, and are placed against one another. The edges of the sheets are bound together by a peripheral U-shaped strip which is attached to both sides. The novel edge connection is considerably more durable than the conventional overlap connection, and as a result of not being susceptible to the otherwise constant danger of tearing due to having been folded, the connection also has a much longer life than do the heretofore known overlap connections.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: November 5, 1985
    Assignee: Continental Gummi-Werke Aktiengesellschaft
    Inventors: Peter Hoheisel, Peter Bartholmei
  • Patent number: 4548355
    Abstract: A device for regulating the heat output or heat capacity of a heat exchanger in an automotive vehicle with an actuating member to control the flow of a heat exchange medium and with a control device operating the actuating member. To provide input to the control device, signals are received from a highly rated internal temperature sensor and a lower rated heating air temperature sensor disposed at the outlet of the heat exchanger as well as a manually adjustable set point generator. The control device includes a pulse generator producing a triangular voltage of a constant frequency, with a differential amplifier for the signals of the temperature sensors as well as the set point generator. A comparator is provided for producing rectangular pulses in correspondence with the triangular voltage frequency, with a pulse width corresponding to the temperature signal of the differential amplifier. The heat exchanger is tubular and has a large ratio of heat exchange medium volume to heat dissipating surface area.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: October 22, 1985
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Albert Stolz, Wolfgang Volz, Gunther Sigmund
  • Patent number: 4446912
    Abstract: A selected segment heating system including: means for heating a fluid; conduit means for conducting the fluid from the outlet to the return inlet of the means for heating through a plurality of areas; means, interconnected with the conduit, for moving the fluid through the conduit; gauging means for operating the means for moving to move a segment of the heated fluid in the conduit as far as the return point of the farthest area to be heated; and delay means for suspending operation of the means for moving for permitting a predetermined heat exchange to occur between the heating fluid and the air in the area to be heated.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: May 8, 1984
    Inventor: James D. Rickman, Jr.
  • Patent number: 4398663
    Abstract: A building heating system with a plurality of steam radiators is provided with a control unit for the steam boiler. The control unit receives signals representative of the outside temperature and the pressure of the steam in the feeder conduit. The control unit shuts off the boiler when the steam pressure in the feeder conduit exceeds a predetermined value corresponding to a given measured outside temperature. After the pressure has decreased to a value below the predetermined value for the measured temperature, the control unit restarts the boiler. Another control unit receives signals representative of the condensate temperature and the pressure in the return conduit. This control unit operates a vacuum pump in the return line and assures that the vacuum pressure in the return line is less than that which causes the condensate to vaporize.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: August 16, 1983
    Assignee: Tour & Andersson Aktiebolag
    Inventor: Richard A. Hegberg
  • Patent number: 4320870
    Abstract: A temperature control system for maintaining a selected location at a preselected temperature comprises a supply of heat transfer fluid, a first control for controlling the temperature of the heat transfer fluid, a heat exchanger for receiving the heat transfer fluid and establishing a heat exchange relationship between the heat transfer fluid and the material at the selected location, a second control for controlling the supply of heat transfer fluid to the heat exchanger, and a thermostat. The thermostat is a differential thermostat having a first sensor to sense the temperature at the selected location and a second sensor to sense the temperature of the heat transfer fluid, and is connected to the second control and is operative to actuate the second control to maintain the difference between the temperatures sensed by the first and second sensors at a selected value. Therefore, adjustment of the first control cause the preselected temperature to be adjusted accordingly.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: March 23, 1982
    Inventor: Giora Manor
  • Patent number: 4189093
    Abstract: An apparatus to regulate the temperature of the interior of a motor vehicle, including a room air temperature sensor and a heating air temperature sensor, with the room air temperature sensor providing a substantially higher controlled variable change per unit of temperature change and wherein the sensor signals are summed by a controller. The heating air temperature sensor consists of two series-connected temperature sensors of which one is thermally insulated. The sensor control signal is taken from the junction between these two temperature sensors so as to provide dynamic coupling of the heating air temperature sensor to the room air temperature sensor. In this manner, the room air temperature is sensed precisely and relatively more rapidly so that an excessively large fluctuation of the actual temperature is avoided if the heating output of the heat exchanger varies between a high and a low value.
    Type: Grant
    Filed: August 5, 1977
    Date of Patent: February 19, 1980
    Assignee: Robert Bosch GmbH
    Inventors: Eberhard Schnaibel, Erich Junginger
  • Patent number: 4147302
    Abstract: A heat control system designed to control individual radiators in a heating system where there is only one boiler supplying steam, or one heated fluid source such as a utility steam supply, and where there is no separate condensate return line; each radiator or riser or both may be individually controlled by devices at and external of the radiator without the need for reconstructing the heating system itself or inserting any mechanical device within the system which will block return of condensates; there is an on-off control valve between the radiator and its vent valve and controllable preferably by a room thermostat; additional fuel saving controls may include a device that is responsive to the radiator becoming heated to a desired level or internal pressure in the radiator to provide an additional control for the control valve.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: April 3, 1979
    Inventor: Irwin Gray
  • Patent number: 3963177
    Abstract: A thermostatic control valve for a one-pipe steam system formed by the combination of a conventional vent valve and a temperature controlled valve for closing the flow passage into the vent valve at a pre-set ambient temperature. The temperature controlled valve is preferably in the form of a self-contained temperature responsive valve having a valve chamber with an inlet connection to a radiator of a one-pipe steam system and an outlet leading into the vent valve. A valve seat is provided between the inlet and the outlet and a valve member cooperates with the seat and is movably actuated through an arrangement controlled by a heat expansible fluid which may, if desired, be positioned in a remote bulb.
    Type: Grant
    Filed: March 12, 1975
    Date of Patent: June 15, 1976
    Assignee: Flair Manufacturing Corporation
    Inventor: Jamie Frank