Patents by Inventor Prasad Shripad Kadle

Prasad Shripad 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).

  • Publication number: 20040094294
    Abstract: A dual evaporator air conditioning system and method for use therewith to cool air in front and rear portions of a cabin of a vehicle. The dual evaporator air conditioning system includes primary and auxiliary HVAC units to cool the air in the front and rear portions of the cabin, respectively. The dual evaporator air conditioning system also includes a control system having cooling and non-cooling modes for each of the HVAC units. The control system automatically activates a heating element near the auxiliary evaporator in response to the auxiliary HVAC unit being in the non-cooling mode while the primary HVAC unit is in the cooling mode. The heating element heats the refrigerant in the auxiliary evaporator to prevent accumulation of liquid refrigerant and lubricating oil in the auxiliary evaporator when the auxiliary HVAC unit is in the non-cooling mode while the primary HVAC unit is in the cooling mode.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventors: Jing Zheng, Prasad Shripad Kadle
  • Publication number: 20040093880
    Abstract: A dual evaporator air conditioning system and method for use therewith to cool air in front and rear portions of a cabin of a vehicle. The dual evaporator air conditioning system includes primary and auxiliary HVAC units having primary and auxiliary evaporators, respectively to cool the air in the front and rear portions of the cabin. A heat exchanger near the auxiliary evaporator warms the refrigerant in the auxiliary evaporator to maintain a minimum temperature of the refrigerant in the auxiliary evaporator. The heat exchanger warms the refrigerant in the auxiliary evaporator to prevent accumulation of liquid refrigerant and lubricating oil in the auxiliary evaporator when the auxiliary HVAC unit is in the non-cooling mode while the primary HVAC unit is in the cooling mode.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventors: Jing Zheng, Prasad Shripad Kadle
  • Patent number: 6705112
    Abstract: An air conditioning system with alternate refrigerant includes isolates an evaporator (22) from the rest of the system not with a conventional, high pressure resisting shut off valve, but by establishing a pair of independent refrigerant loops from the standard single loop when the system shuts down. A valve housing (28) has three ports on one side, an upper port (34) connected to the condenser outlet (16), a central port (36) connected to the compressor inlet (10), and a lower port (38) connected to the evaporator outlet (24). On the other side, a single port (40) is connected to the evaporator inlet (20). Inside the valve housing, a movable valve member (30) shifts position between a normal, operating position that interconnects the heat exchangers (14, 22), through the ports in a single loop, and a system off position which, through a different arrangement of the ports, creates a separate, isolation loop for just the evaporator (22).
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: March 16, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Prasad Shripad Kadle, Jing Zheng
  • Publication number: 20040003623
    Abstract: An air conditioning system for a vehicle includes an evaporator for evaporating the refrigerant and including a predetermined portion in which refrigerant pools. A device for directing the flow of air to the predetermined portion to minimize the pooling of refrigerant in the predetermined portion includes a spool and a sheet wound around the spool for winding and unwinding the sheet. The opening is disposed in the sheet for allowing airflow to said predetermined portion of the evaporator.
    Type: Application
    Filed: June 9, 2003
    Publication date: January 8, 2004
    Inventors: Mahmoud Ghodbane, James Allen Baker, Prasad Shripad Kadle
  • Publication number: 20040003616
    Abstract: An air conditioning system for a vehicle includes a controller for periodically increasing the stroke and output of the pistons in a variable stroke compressor for periodically reducing the amount of refrigerant resident in the evaporator. The controller includes a timer for establishing predetermined time periods between the momentary spikes of periodic increases of stroke. Normally, the stroke is spiked only when the compressor is operating at a low load condition.
    Type: Application
    Filed: June 19, 2003
    Publication date: January 8, 2004
    Inventors: Prasad Shripad Kadle, James Allen Baker, Mahmoud Ghodbane
  • Publication number: 20040003624
    Abstract: An air conditioning system for a vehicle includes an accumulator/dehydrator (A/D) disposed in the suction fluid line for accumulating refrigerant and a heat transfer jacket surrounds the A/D for exchanging heat with the A/D and the refrigerant therein. The heat transfer jacket may define a space between an inner wall of the A/D and an outer wall spaced therefrom with a heat transfer media disposed in the space for cooling by extracting heat from the refrigerant in the A/D. Alternatively, the jacket is defined by a double walled sleeve surrounding the A/D and defining the space for the heat transfer media. Yet another alternative is for the heat transfer jacket to comprise a thermoelectric device.
    Type: Application
    Filed: June 24, 2003
    Publication date: January 8, 2004
    Inventors: Prasad Shripad Kadle, James Allen Baker, Mahmoud Ghodbane
  • Patent number: 6655163
    Abstract: A dual evaporator air conditioning system and method for use therewith to cool air in front and rear portions of a cabin. The dual evaporator air conditioning system includes primary and auxiliary HVAC units to cool the air in the front and rear portions of the cabin, respectively. The dual evaporator air conditioning system also includes a control system having cooling and non-cooling modes for each of the HVAC units. The control system automatically diverts cooled air produced by the auxiliary HVAC unit into an air dumping chamber in response to the auxiliary HVAC unit being in the non-cooling mode while the primary HVAC unit is in the cooling mode. The air dumping chamber is partitioned from the cabin to prevent the cooled air generated by the auxiliary HVAC unit from entering the cabin. Maintaining airflow through an auxiliary evaporator prevents refrigerant and lubricant buildup in the auxiliary evaporator.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: December 2, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Lawrence Scherer, Prasad Shripad Kadle, Jing Zheng
  • Patent number: 6651895
    Abstract: An improved motor vehicle automatic climate control methodology allows an occupant of the vehicle to select one of a number of automatic climate control settings that are calibrated to satisfy the comfort preferences of different types of occupants. In a first embodiment, the occupant selects one of a number of a pre-programmed control setting schedules that provide different HVAC power levels. In a second embodiment, the occupant first selects a desired HVAC power level, and then activates one of a number of control setting combinations that satisfy both the selected HVAC power level and his or her comfort preference.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: November 25, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Prasad Shripad Kadle, Mingyu Wang
  • Patent number: 6536230
    Abstract: An accumulator-dehydrator assembly for use in an air conditioning system including an evaporator and a compressor. The accumulator-dehydrator assembly also includes a canister with an upper portion, an inlet, an outlet and a delivery tube with a first tube end positioned in the upper portion of the canister and a second tube end connected to the outlet. A baffle is disposed within the canister that includes a first end connected to the canister and a second end positioned to define a partition between the first tube end of the delivery tube and the inlet. The purpose of the baffle is to reduce pulsations that result from pressure fluctuations in the air-conditioning system.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: March 25, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Brian J. Coyle, Prasad Shripad Kadle, John Barrett, John Paul Telesz
  • Patent number: 5878590
    Abstract: An improved dehumidification system for automotive use includes a rotating, wheel like heat exchanger with axially open cells that carry a water adsorbing material. Opposed ambient air and heated air flows, covering opposite halves of the wheel, continually adsorb water on one side and are recharged on the other side. Alternating radially closed cells between the axially open cells carry no desiccant material, but receive a cross cooling flow, on the water adsorbing side of the wheel only, to remove the heat released during the water adsorption process. The desiccant recharging process on the other side of the wheel is not disturbed by the cross cooling flow.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: March 9, 1999
    Assignee: General Motors Corporation
    Inventors: Prasad Shripad Kadle, Mohinder Singh Bhatti
  • Patent number: RE38181
    Abstract: An improved dehumidification system for automotive use includes a rotating, wheel like heat exchanger with axially open cells that carry a water adsorbing material. Opposed ambient air and heated air flows, covering opposite halves of the wheel, continually adsorb water on one side and are recharged on the other side. Alternating radially closed cells between the axially open cells carry no desiccant material, but receive a cross cooling flow, on the water adsorbing side of the wheel only, to remove the heat released during the water adsorption process. The desiccant recharging process on the other side of the wheel is not disturbed by the cross cooling flow.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: July 15, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Prasad Shripad Kadle, Mohinder Singh Bhatti