Change-over From Heat Pump Operation To Supplemental Heat Source Operation Alone Patents (Class 165/241)
  • Patent number: 10059580
    Abstract: A beverage cooling system includes a main assembly having a refrigeration module, a pumping and control module, and a beverage cooling module. The refrigeration module has a refrigeration system cooling a cooling medium. The beverage cooling module has a cooling tank cooled by the refrigeration system. The pumping and control module has a pump to pump a beverage ingredient cooled by the refrigeration system. Each of the refrigeration module, the pumping and control module, and beverage cooling module are independently removable from and connectable to the remainder of the main assembly.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: August 28, 2018
    Assignee: MANITOWOC FOODSERVICE COMPANIES, LLC
    Inventors: Gary David Wyatt, Nigel Mobbs
  • Patent number: 9021820
    Abstract: The invention relates to a control process for an air conditioning system. The air conditioning system comprises a thermal loop (1) used as a heat pump and an electrical heating device (2). The process calculates a global heating capacity (HCglo) in function of the temperature chosen by the passenger, the speed of the blower and the temperature of the exterior air. Then, the process calculates a heating capacity (HC1) of the thermal loop (1) and compares this heating capacity (HC1) of the thermal loop to the global heating capacity (HCglo). If the global heating capacity (HCglo) is superior to the heating capacity (HC1) of the thermal loop, the process determines a heating capacity (HC2) of the electrical heating device (2). This heating capacity (HC2) of the electrical heating device (2) added to the heating capacity (HC1) of the thermal loop (1) allows to obtain the global heating capacity (HCglo) required in function of the temperature selected by the passenger.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: May 5, 2015
    Assignee: Valeo Systemes Thermiques
    Inventors: Mohamed Yahia, Bertrand Nicolas, Samy Hammi
  • Patent number: 8910394
    Abstract: A tumble dryer having a drying chamber for articles to be dried; a process-air duct; a heater arranged to heat process air, wherein the heater is a two-stage heater having a first heating stage in a first circuit and a second heating stage in a second circuit that is parallel to the first circuit; a first fan to direct heated process air over the articles to be dried in the drying chamber; a heat pump having a heat sink, a heat source and a heat transfer device; a controller; and a thermostatic switch arranged in the first circuit or the second circuit, wherein the thermostatic switch is thermally coupled to the heat pump.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: December 16, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventor: Günter Steffens
  • Patent number: 8689572
    Abstract: A thermostat is provided that receives one or more inputs from at least one heating system of a climate control system, and initiates an appropriate action in response to the input. The thermostat can turn off a heat pump providing substandard heat and responsively turn on a fuel-fired auxiliary furnace. The thermostat may discontinue further operation of the auxiliary furnace upon receiving an operating error signal associated with the auxiliary furnace, and responsively turn on the heat pump to provide for continued heating. The thermostat may also discontinue operation of the fuel-fired furnace and turn on a circulating fan in response to an input signal indicating a furnace high-temperature or a carbon monoxide presence.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 8, 2014
    Assignee: Emerson Electric Co.
    Inventors: Edward B. Evans, William P. Butler, Steven L. Carey, John R. Sartain, Ron Miles, Donald E. Donnelly, Swapna Subhash Baviskar
  • Patent number: 8607855
    Abstract: The invention relates to an air-conditioning system for a motor-driven vehicle, having a refrigerant circuit (20) with a plurality of heat exchangers (4, 24) through which a refrigerant can be conducted for an exchange of heat with the air which flows through them, with it being possible for the heat exchangers (4, 24) to be operated as heaters or as evaporators as a function of the operating state of the air-conditioning system, and at least one third heat exchanger (16) is provided in the refrigerant circuit (20), which third heat exchanger (16) serves for an exchange of heat with a coolant circuit (13) which is formed separately from the refrigerant circuit (20). The vehicle can be both a motor vehicle and also a fuel-cell-driven vehicle.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: December 17, 2013
    Assignees: Behr GmbH & Co. KG, Behr America, Inc., Behr France Rouffach SAS
    Inventors: Günther Feuerecker, Karl Lochmahr, Frank Müller, Dirk Neumeister, Thomas Strauβ, Marcus Weinbrenner, Richard Obradovich, Gunnar Schlinke, Christophe Schmittheisler
  • Publication number: 20120152514
    Abstract: A heating system includes: a heat generation unit which generates heat using electricity supplied through a second power system of a lower electricity rate; a heat storage unit which stores heat generated by the heat generation unit; a heat radiation unit which radiates heat stored in the heat storage unit; and a control unit which causes, when receiving a signal from a power supplier indicating that a supply of electricity through the second power system is to be stopped after an elapse of a predetermined period of time, the heat generation unit generates additional heat that is required while the supply of electricity through the second power system being suspended, during a period of time from when the signal is received to when the supply of electricity through the second power system is stopped.
    Type: Application
    Filed: July 19, 2011
    Publication date: June 21, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shinichi Takasaki, Atsushi Kakimoto, Akira Hochi
  • Patent number: 7731098
    Abstract: A thermostat is provided that receives one or more inputs from at least one heating system of a climate control system, and initiates an appropriate action in response to the input. The thermostat can turn off a heat pump providing substandard heat and responsively turn on a fuel-fired auxiliary furnace. The thermostat may discontinue further operation of the auxiliary furnace upon receiving an operating error signal associated with the auxiliary furnace, and responsively turn on the heat pump to provide for continued heating. The thermostat may also discontinue operation of the fuel-fired furnace and turn on a circulating fan in response to an input signal indicating a furnace high-temperature or a carbon monoxide presence.
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: June 8, 2010
    Assignee: Emerson Electric Co.
    Inventors: William P. Butler, Steven L. Carey, John R. Sartain
  • Patent number: 7520320
    Abstract: An automotive air conditioning system has a primary hot water circuit 11 located on a side where a vehicle installed heat generator 10 is located and a secondary hot water circuit 13 which includes a hot water type heater core 12 for heating passenger compartment outlet air, whereby when in a heating mode, in the event that a coolant temperature TW1 of the primary hot water circuit is lower than a coolant temperature TW2 of the secondary hot water circuit 13, an opening and closing valve 26 is closed, whereas an opening and closing valve 23 is opened, so that a state is created in which the hot water circuits 11, 13 are separated from each other.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: April 21, 2009
    Assignee: Denso Corporation
    Inventors: Satoshi Itoh, Yoshitaka Tomatsu, Yasutaka Kuroda
  • Patent number: 7402780
    Abstract: A thermostat is provided comprising a first connector for connecting to an air conditioner, a second connector for connecting to either a conventional heater or a heat pump reversing valve, and a selection means for selecting from at least a first mode of operation and a second mode of operation. The first mode of operation is configured to establish cooling by providing an on signal to the first connector and to establish heating by providing an on signal to the second connector. The second mode of operation is configured to establish cooling by providing an on signal to the first and second connectors, and heating by providing an on signal to the first connector but not the second connector. When the second mode is selected and the second connector is connected to conventional heating, the thermostat detects when both the conventional heating and air conditioning are operating simultaneously during cooling.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: July 22, 2008
    Assignee: Emerson Electric Co.
    Inventors: Carl J. Mueller, John M. Sartain, Bartholomew L. Toth
  • Patent number: 7380588
    Abstract: A heat pump type heating and air conditioning system includes a gas furnace or other auxiliary heat source and a thermostat and controller associated with the heat pump and the auxiliary heat source for automatically energizing the heat pump if the auxiliary heat source is inoperative regardless of whether or not the automatic heating mode has been selected or the auxiliary heating mode has been selected by the user of the system. A method of operating a heat pump system with an auxiliary heating source to automatically change from operation of the heat pump to the auxiliary heating source depending on conditions such as outdoor temperature, and to automatically change back to operation of the heat pump if the auxiliary heating source is inoperable.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: June 3, 2008
    Assignee: Trane International Inc.
    Inventor: Robert W. Helt
  • Patent number: 7261243
    Abstract: A thermostat is provided that receives one or more inputs from at least one heating system of a climate control system, and initiates an appropriate action in response to the input. The thermostat can turn off a heat pump providing substandard heat and responsively turn on a fuel-fired auxiliary furnace. The thermostat may discontinue further operation of the auxiliary furnace upon receiving an operating error signal associated with the auxiliary furnace, and responsively turn on the heat pump to provide for continued heating. The thermostat may also discontinue operation of the fuel-fired furnace and turn on a circulating fan in response to an input signal indicating a furnace high-temperature or a carbon monoxide presence.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: August 28, 2007
    Assignee: Emerson Electric Co.
    Inventors: William P. Butler, Steven L. Casey, John M. Sartain
  • Patent number: 7207379
    Abstract: An automotive air conditioning system comprising a main heating unit 4 for heating air passing through an air conditioning duct 2 with cooling water of an engine E and a refrigeration cycle device 20 having a first refrigerant circulating circuit 21 which is a cooler mode and a second refrigerant circulating circuit 22 which is a heater mode and whose operation is controlled by an ECU 10, wherein while the automotive air conditioning system is operated in a heater mode functioning as auxiliary heating, in the event that a heating load is equal to or larger than a predetermined value, a refrigerant compressor 7 is kept switched off until a predetermined time T1 has elapsed after the engine E has started. In addition, a heating device is provided on the refrigerant compressor or an accumulator so that the refrigerant compressor or the accumulator is heated by the heating devices while the automotive air conditioning system is operated in the heater mode functioning as auxiliary heating.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: April 24, 2007
    Assignee: DENSO Corporation
    Inventors: Yoshiaki Takano, Shun Kurata
  • Patent number: 7140427
    Abstract: In a vehicle air conditioner for heating a passenger compartment by a heater core and a heat pump cycle, when operation of a heat pump cycle is switched from a defrosting operation to a heating assist operation, a heating degree of the heater core is increased higher than a predetermined heating degree. Further, when the operation of the heat pump cycle is switched from the defrosting operation to the heating assist operation, an air outlet mode except for a defrosting mode for defrosting a windshield is set. Further, in the defrosting operation of the heat pump cycle, the temperature of an interior heat exchanger of the heat pump cycle is set higher.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: November 28, 2006
    Assignee: DENSO Corporation
    Inventors: Keita Honda, Kunio Iritani
  • Patent number: 7085626
    Abstract: A heating control method is provided for a multi-stage heating system including a heating circuit having a compressor, a condenser and an evaporator. An auxiliary heater is provided that is selectively controlled independently of the heating circuit. During a heating cycle in which the ambient outside temperature is greater than the balance point temperature associated with the operation of the heating circuit, the auxiliary heating circuit is normally prevented from operating. However, if the heating requirements are not satisfied after a predetermined time or the compressor is non-functional or operating improperly, the auxiliary heater is enabled.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: August 1, 2006
    Assignee: York International Corporation
    Inventors: Gregory Ralph Harrod, Jeffrey Lee Tucker
  • Patent number: 6729390
    Abstract: A method of controlling a heating system including at least a first stage heat pump and a second stage auxiliary heater, and a control that implements the method. The control shuts off the first stage heat pump during cold outside temperatures without the need to directly sense the outside temperature. The method includes selectively turning on the first stage heat pump or the second stage auxiliary heater based upon a measure of the amount of time at least one of the stages was on verses the time neither of the stages was on. This can be implemented with a counter that increases when neither the heat pump nor the auxiliary heater is on, and that decreases when either the heat pump or the auxiliary heater is on.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: May 4, 2004
    Assignee: Emerson Electric Co.
    Inventors: Bartholomew L. Toth, Frank A. Albanello, David L. Perry, Dennis Snow
  • Patent number: 6604576
    Abstract: An air conditioning system for a vehicle has a first cycle including a compressor, a first condenser, a second condenser, a liquid tank, an expansion valve and an evaporator which are connected through pipes to form a first refrigerant circulation circuit through which a refrigerant flows from an outlet of the compressor to an inlet of the compressor while changing the phase. The first cycle causes the evaporator to act as a cooler when operated. The system further has a second cycle including the compressor, the second condenser, the liquid tank, the evaporator and the evaporator which are connected through pipes to form a second refrigerant circulation circuit through which the refrigerant flows from the outlet of the compressor to the inlet of the compressor while changing the phase. The second cycle causes the condenser to act as a heater and the evaporator to act as a cooler when operated. The first and second cycles are switched by switch means.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: August 12, 2003
    Assignee: Calsonic Kansei Corporation
    Inventors: Yoshitoshi Noda, Hiroyuki Yamaguchi, Tadayoshi Tajima, Hiroki Yoshioka, Toshio Ohashi, Kenichi Abe
  • Patent number: 6598671
    Abstract: An apparatus for heating the interior compartment of a vehicle, the apparatus has a primary heating system, a secondary heating system and an operating system. The primary heating system receives and circulates an engine coolant through a heater core. The secondary heating system receives and circulates a gas, the secondary heating system heats the gas and circulates the heated gas through a heat exchanger. The operating system for operating the heating systems, the operating system receives a plurality of inputs and in response to the inputs the operating system determines which of the heating systems is to be activated in response to a heating request. The operating system also determines whether or not to deactivate one or both of the heating systems.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: July 29, 2003
    Assignee: General Motors Corporation
    Inventors: Xin Zeng, Gregory Alan Major
  • Patent number: 6543531
    Abstract: A device and a method are provided for heating and cooling a compartment of a motor vehicle powered by an internal combustion engine. The device has a coolant circuit with a compressor, an ambient heat exchanger, at least one expansion device, an interior heat exchanger, and an exhaust heat exchanger that can be heated by exhaust gases from the engine. During heating, a coolant is guided through the compressor and through the interior heat exchanger connected downstream from the compressor, releasing heat. The compressor, interior heat exchanger, expansion device, ambient heat exchanger, and heat exchanger are connected in series so that the coolant is expanded in the expansion device to a temperature below an intake temperature of coolant into the compressor, exposed in the ambient heat exchanger to warmer ambient air, heated in the heat exchanger by the exhaust gases from the engine, and compressed in the compressor.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: April 8, 2003
    Assignee: DaimlerChrysler AG
    Inventors: Roland Cäsar, Klaus Skupin, Jürgen Wertenbach
  • Patent number: 6422308
    Abstract: A heat pump type air conditioner for a vehicle has a refrigeration cycle constituted by a compressor, an external heat exchanger, a refrigerant valve unit and an internal heat exchanger unit. The refrigerant valve unit includes first and second flow control valves, and the internal heat exchanger unit includes an auxiliary internal heat exchanger and a main internal heat exchanger. In the refrigeration cycle, the first flow control valve, the auxiliary internal heat exchanger, the second flow control valve and the main internal heat exchanger are serially connected in the order of mention. The main and auxiliary internal heat exchangers change their function between an evaporator and a condenser according to the controlled state of the first and second flow control valve.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: July 23, 2002
    Assignee: Calsonic Kansei Corporation
    Inventors: Yasuhito Okawara, Toshio Ohashi, Yuichi Meguriya, Tadayoshi Tajima
  • Patent number: 6237681
    Abstract: A refrigerating cycle apparatus that inhibits system corrosion and abnormally high pressure during startup of a first refrigerant circuit by preventing air from penetrating into a refrigerant compressor during low-temperature startup of a second auxiliary refrigerant circuit. An apparatus evaporator heats air flowing through an air conditioning duct as a high temperature/high pressure gas refrigerant discharged from an engine-driven compressor is guided through a pressure-reducing unit and the evaporator, bypassing a condenser. Thereafter, the refrigerant is returned to the compressor, which is automatically stopped when a compressor suction pressure, or a physical quantity representative of the suction pressure, becomes lower than a predetermined value.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: May 29, 2001
    Assignee: Denso Corporation
    Inventors: Yoshiaki Takano, Satoshi Izawa, Yasushi Yamanaka, Hajime Ito
  • Patent number: 6176306
    Abstract: A method and device for controlling the operation of a heat pump having a primary heat system and an auxiliary heat system, and used to heat air circulating in an enclosure such as a building, the invention comprising a first sensor positioned in the return duct of the heating system for measuring the temperature of air being returned to the heat system from the enclosure, a second sensor for measuring the temperature of air which has been heated only by the primary heat system, a temperature comparing relay for comparing the two sensed temperatures and determining the difference between them and actuating the auxiliary heat system only when the temperature difference is less than a predetermined set point, for example 4° F., thereby providing a significantly enhanced operating efficiency of the heating system.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: January 23, 2001
    Inventor: Robert Gault
  • Patent number: 6073690
    Abstract: A heating system control unit is provided for use with a heating system. The control unit includes a switching element connected to a first temperature switch associated with a first stage heater, a second temperature switch and a second stage heater of the heating system. The switching element is adapted for actuating the second stage heater upon the receipt of the second temperature signal and further continuing the actuation of the second stage heater until the lack of receipt of both the first temperature signal and the second temperature signal. A thermostat on the outdoor coil serves to pass the signal from the second temperature switch only upon a temperature of the outdoor coil being below a predetermined amount of about 25 degrees Fahrenheit.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: June 13, 2000
    Inventor: Donald R. Raley