Patents by Inventor Prasad Kadle
Prasad Kadle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10350961Abstract: A heating system for an automotive passenger cabin includes a blower fan generating an air flow; a first heater core downstream of the blower fan; a second heater core downstream of the first heater core; a coolant loop with a first branch and a second branch, wherein the first heater core is disposed in the first branch and the second heater core is disposed in the second branch; a change-over valve arrangement having a first setting establishing fluid communication between the first and second heater cores by connecting the first and second branches in two locations on opposite sides of the first and second heater cores. The change-over valve arrangement has a second setting separating the fluid communication between the first and second heater cores by disconnecting the first and second branches. The second branch or both the first and the second branch are connectable to a PCM heater.Type: GrantFiled: February 23, 2017Date of Patent: July 16, 2019Assignee: MAHLE International GmbHInventors: Mingyu Wang, Edward Wolfe, IV, Timothy Craig, Prasad Kadle
-
Publication number: 20180236843Abstract: A heating system for an automotive passenger cabin includes a blower fan generating an air flow; a first heater core downstream of the blower fan; a second heater core downstream of the first heater core; a coolant loop with a first branch and a second branch, wherein the first heater core is disposed in the first branch and the second heater core is disposed in the second branch; a change-over valve arrangement having a first setting establishing fluid communication between the first and second heater cores by connecting the first and second branches in two locations on opposite sides of the first and second heater cores. The change-over valve arrangement has a second setting separating the fluid communication between the first and second heater cores by disconnecting the first and second branches. The second branch or both the first and the second branch are connectable to a PCM heater.Type: ApplicationFiled: February 23, 2017Publication date: August 23, 2018Inventors: Mingyu Wang, Edward Wolfe, IV, Timothy Craig, Prasad Kadle
-
Publication number: 20070214800Abstract: Differential thermal conditioning of vehicle seat zones is achieved with convenient adjustment of a seat temperature differential for optimizing the thermal comfort of the seat occupant. Two or more thermoelectric units supply conditioned air to different zones of the seat, and the temperature differential between specified zones of the seat is set by an occupant-adjustable control input.Type: ApplicationFiled: March 15, 2006Publication date: September 20, 2007Inventors: Prasad Kadle, Edward Wolfe, Xiaoxia Mu
-
Publication number: 20070157630Abstract: Conditioned air discharged from a vehicle heating, ventilation and air conditioning (HVAC) unit is further conditioned by a thermoelectric (TE) air conditioning unit and then directed to air passages in a vehicle seat. Activation of the TE air conditioning unit is based on climate control parameters utilized by the HVAC unit, including a set temperature, radiant heating effects, and cabin air temperature. The climate control parameters are utilized to establish a target seat temperature that optimizes occupant comfort and the transient response of the seat cooling effect.Type: ApplicationFiled: January 10, 2006Publication date: July 12, 2007Inventors: Prasad Kadle, Edward Wolfe, Xiaoxia Mu, Lin-Jie Huang
-
Publication number: 20060260337Abstract: A heating and cooling and air conditioning (HVAC) module housing wherein the defrost outlet and the vent outlet and the seat outlet are disposed next adjacent to one another and a first plate overlies the defrost outlet and the seat outlet and a second plate overlies the seat outlet and the vent outlet for opening and closing various combinations of the outlets. Accordingly, the defrost valve and the vent valve are used to also control air flow through the seat outlet of a HVAC module to a thermo-electric device to heat and cool the seat assembly in a vehicle.Type: ApplicationFiled: May 20, 2005Publication date: November 23, 2006Inventors: Prasad Kadle, Edward Wolfe
-
Publication number: 20060107675Abstract: A sub-unit for a vehicle air conditioning system is shipped with a condenser, chiller and fluid lines. Snap together couplings are placed on free ends of the fluid lines whereby the sub-unit can be pre-charged, shipped, installed into the front end of a vehicle engine compartment and connected to an air conditioning compressor.Type: ApplicationFiled: January 10, 2006Publication date: May 25, 2006Inventors: Prasad Kadle, Mahmoud Ghodbane
-
Publication number: 20050268621Abstract: A thermoelectric device is disposed in series with the HVAC module for heating and cooling air Ta from the HVAC module for delivery to seat passages of a seat assembly. The thermoelectric device includes a thermoelectric module, a heat exchanger having cold and hot sides, ductwork, a divider that sends variable air flow to the cold or hot sides of the thermoelectric module, and thermal insulation between the cold and hot sides downstream of the heat exchanger. The fan of the HVAC module is the sole motivation for moving the conditioned air Ta originating from the central HVAC module through the thermoelectric device and to the seat assembly.Type: ApplicationFiled: September 23, 2004Publication date: December 8, 2005Inventors: Prasad Kadle, Edward Wolfe, Joseph Heremans, Donald Morelli
-
Publication number: 20050257541Abstract: A thermo-electric device has a seat side and a cabin side for delivering heating and cooling air from a HVAC module to seat passages of a vehicle seat assembly. A selector is included for setting a desired or control temperature Tcontrol of the seat assembly. A comparator is included for determining the temperature difference ?T between the actual temperature of the seat assembly Tseat and the desired or selected temperature Tcontrol. A controller simultaneously adjusts a proportioning valve and adjusts the electrical current to the thermoelectric device in relationship to one another in response to the temperature difference ?T.Type: ApplicationFiled: June 9, 2005Publication date: November 24, 2005Inventors: Prasad Kadle, Edward Wolfe, Joseph Heremans, Donald Morelli
-
Publication number: 20050257531Abstract: A thermo-electric device is disposed in series with the HVAC module for heating and cooling air Ta from the HVAC module for delivery to seat passages of a seat assembly and/or to a thermal container. The thermoelectric device includes a thermoelectric module, a heat exchanger having cold and hot sides, ductwork, a divider that sends variable air flow to the cold or hot sides of the thermoelectric module, and thermal insulation between the cold and hot sides downstream of the heat exchanger. The fan of the HVAC module is the sole motivation for moving the conditioned air Ta originating from the central HVAC module through the thermoelectric device and to the seat assembly and/or to a thermal container.Type: ApplicationFiled: June 9, 2005Publication date: November 24, 2005Inventors: Prasad Kadle, Edward Wolfe, Joseph Heremans, Donald Morelli
-
Publication number: 20050235668Abstract: A vehicle climate control is compensated for direct and indirect infrared heat loading due to solar radiation based on a mean radiant temperature sensor and a cabin air temperature sensor. The mean radiant temperature sensor include a temperature responsive element such as a thermistor enclosed in a hollow spherical housing that blocks visible light but absorbs infrared radiation. The difference between the mean radiant temperature and the cabin air temperature provides a measure of the total infrared heat loading on the cabin and is used to increase the cooling capacity of the climate control system.Type: ApplicationFiled: April 22, 2004Publication date: October 27, 2005Inventors: Lin-Jie Huang, Prasad Kadle
-
Publication number: 20050103031Abstract: In order to reduce refrigerant leakage from an automotive air conditioning system, the leakage paths are kept sealed by automatically reducing the output of a variable displacement compressor (12) after initial operation of the engine for a predetermined number of five minutes, and then only for a predetermined number of ten seconds, that is, so long as there has been an air conditioning on signal by the operator. After the reduction in output for ten seconds, the output of the compressor (12) is returned to full output for a predetermined number of two air-conditioning minutes, which is then followed by another ten seconds of reduced output.Type: ApplicationFiled: November 16, 2004Publication date: May 19, 2005Inventors: S. Ahmed, Edward Wolfe, Prasad Kadle, William Kumpf
-
Publication number: 20050061010Abstract: A blowoff valve assembly includes a diaphragm separating a refrigerant connection from an ambient port open to the atmosphere. The refrigerant connection is preferably connected to air conditioning system such that the diaphragm is in contact with refrigerant from the system. The diaphragm is deflectable based on the pressure of the refrigerant and is operatively connected to a switch. When pressure of the refrigerant drops to a predetermined level, the diaphragm deflects to activate the switch. Additionally, the assembly also includes a detonable squib that explodes and ruptures the diaphragm, allowing the refrigerant to flow from the refrigerant connection to the atmosphere. Additional features, such as sensors for detecting refrigerant outside of the system, a collision subsystem, and an associated controller are also disclosed.Type: ApplicationFiled: August 4, 2004Publication date: March 24, 2005Inventors: Xiaoxia Mu, Taylor Eckstein, William Kumpf, Prasad Kadle
-
Publication number: 20050039475Abstract: Each blow-off valve includes a valve body with a first movable wall defining a portion of the liquid fluid passage therein and a second movable wall defining a portion of the suction fluid passage therein. An actuator interconnects the movable walls for simultaneously moving the walls and opening the fluid passages in response to the electrical leakage-warning signal. In the species of FIGS. 2 and 3, the movable walls are integrally united with the valve body and include frangible sections that are fractured by an explosive squib to separate the movable walls from the body to simultaneously open the liquid and suction fluid passages. In the species of FIG. 5, the movable walls are separate valve elements disposed in a circular bore that opens the passages to the ambient surroundings. The actuator includes a spring, for biasing each of the valve elements out of its respective bore, and a holding device that weakens in response to the electrical leakage-warning signal.Type: ApplicationFiled: September 16, 2004Publication date: February 24, 2005Inventors: Prasad Kadle, James Baker, William Kumpf, Mahmoud Ghodbane, Lawrence Scherer
-
Publication number: 20050028540Abstract: A method of operating a directed relief valve (28) for an air conditioning system (10) preferably for a vehicle. The air conditioning system (10) includes a compressor (12), a condenser (16), an expansion device (20), and an evaporator connected to one another by refrigerant lines. The system (10) also includes the directed relief valve (28), which is disposed inline with at least one of the refrigerant lines to ventilate the refrigerant. The directed relief valve (28) includes a detonable squib (36) that explodes in response to a ventilation signal. A controller (40) generates the ventilation signal in response to a refrigerant leak being detected by a sensor (38). The sensor (38) is preferably located within an air space (27) and adjacent to the evaporator (22). If there is a malfunction of one of a plurality of sensors (38), a partial malfunction message is sent to the operator.Type: ApplicationFiled: June 8, 2004Publication date: February 10, 2005Inventors: Mark Zima, Prasad Kadle
-
Publication number: 20050022983Abstract: A chiller-condenser is disposed downstream of a condenser and a chiller-evaporator is disposed downstream of the chiller-condenser. A main three-way valve is disposed between the compressor and the condenser for directing flow from the compressor to the condenser in the air-conditioning mode and for directing flow from the compressor through a by-pass line to the chiller-condenser in the heat pump mode. A heat pump (HP) expansion device shown as an orifice tube expands the refrigerant in the heat pump mode and an by-pass valve is disposed between the chiller-condenser and the chiller-evaporator for directing flow from the chiller-condenser through the heat pump expansion device and to the chiller-evaporator in the heat pump mode. An air-conditioning (A/C) expansion device shown as orifice tube is disposed downstream of the condenser and upstream of the by-pass line for expanding the refrigerant in the air-conditioning mode.Type: ApplicationFiled: January 8, 2004Publication date: February 3, 2005Inventors: Prasad Kadle, Mahmoud Ghodbane
-
Publication number: 20050016196Abstract: A sub-unit for a vehicle air conditioning system is shipped with a condenser, chiller and fluid lines. Snap together couplings are placed on free ends of the fluid lines whereby the sub-unit can be pre-charged, shipped, installed into the front end of a vehicle engine compartment and connected to an air conditioning compressor.Type: ApplicationFiled: June 22, 2004Publication date: January 27, 2005Inventors: Prasad Kadle, Mahmoud Ghodbane