Mahle International Gmbh

Delphi Technologies, Inc.

Carrie M Kowsky

Prasad Shripad Kadle

Edward Wolfe, Iv

James A Bright

Edward Douglas Pettitt

Frederick Vincent Oddi

Mark James Zima

Gregory J Kowalski

Timothy D Craig

Lindsey Lee Leitzel

Sourav Chowdhury

Nick G Sabha

Nick George Sabha

Edward Iv Wolfe

Edward Wolfe Iv

Frederick V Oddi

James Alan Bright

A heat exchanger includes a header, a plurality of tubes, and a distributor. The header is configured to define an inlet for the heat exchanger. The tubes extend away from and are fluidicly coupled to the header. The distributor is located within the header and is configured to distribute refrigerant flowing along a longitudinal axis from the inlet to the tubes via a plurality of openings defined by the distributor through a wall of the distributor. The openings include a first opening configured to direct refrigerant in a first direction, and a second opening configured to direct refrigerant in a second direction. The first direction and the second direction are selected such that refrigerant emitted from the first opening and the second opening substantially intersect each other.

Heat exchanger distributor with intersecting streams

Disclosed is a unitary heat pump air conditioner (HPAC) system having a refrigerant diversion loop configured to supply sufficient heat to defrost an external heat exchanger while not materially affecting the supply of heat to the passenger compartment of a vehicle. The HPAC system includes a refrigerant loop configured to pump heat from a cold coolant loop that scavenges heat from the external heat exchanger to a hot coolant loop that supplies heat to the passenger compartment. The refrigerant loop includes a condenser in thermal communication with the hot coolant loop, evaporator in thermal communication with the cold coolant loop, and a compressor to cycle the refrigerant through the refrigerant loop. The refrigerant loop further includes means to selectively divert at least a portion of the hot compressed refrigerant exiting the compressor directly to the evaporator to heat the cold coolant loop sufficient to defrost the external heat exchanger.

Unitary heat pump air conditioner having a compressed vapor diversion loop

An internal heat exchanger assembly for an air conditioning system, having a housing defining a cylindrical with opposing ends. The ends are sealed with end caps having inlets/outlets. A helical coil tube is coaxially disposed within the cylindrical cavity, in which the helical coil includes two tube ends extending in opposing directions and exiting the cylindrical cavity through tube ports provided in the end caps. A twisted elongated strip is coaxially disposed within the cylindrical cavity extending from the first end to the second end. The twisted elongated strip includes a plurality of radially extending fingers adapted to engage the helical coil to maintain the helical coil in a predetermined position.

Internal heat exchanger assembly

An automotive evaporator heat exchanger is provided having a hybrid expansion device configured to aliquot refrigerant across the refrigerant tubes. The hybrid expansion device includes a first stage refrigerant pressure drop device and a second stage refrigerant pressure drop device. The first stage refrigerant pressure drop device is a TXV configured to receive and expand a liquid phase refrigerant into a first mixture of two phase refrigerant and the second stage refrigerant pressure drop device is a tube extending within the inlet manifold configured to expand the first mixture of two phase refrigerant into a second mixture of two phase refrigerant. The tube includes a plurality of orifices and a tube diameter large enough to prevent resistance to refrigerant flow, but, small enough to prevent the first mixture of two phase refrigerant flow from separating into liquid and vapor strata.

Evaporator having a hybrid expansion device for improved aliquoting of refrigerant

An internal heat exchanger assembly for an air conditioning system, having a substantial cylindrical cavity in which a helical coil tube is coaxially disposed within the cylindrical cavity. A bleed valve assembly is incorporated into the helical coiled tube, in which the bleed valve assembly is adapted to open at a predetermined differential pressure between the high pressure side and low pressure side of the internal heat exchanger. The bleed valve selectively bleeds refrigerant from the high pressure side to the low pressure side, thereby increasing the pressure and mass flow rate of the refrigerant to the suction side of a compressor.

Internal heat exchanger assembly having an internal bleed valve assembly

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Lockport, NY, United States of America

Carrie M Kowsky