Patent ID: 9494350
Filing Date: 2016-11-15
CPC Classification: B60H,F25B,F28D,F28F

Claim Text:
1. A unitary heat pump air conditioner (Unitary HPAC), comprising: a plate-type HPAC heat exchanger having a plurality of plates stacked and hermetically sealed between an upstream end plate and a downstream end plate, defining: a first heat exchanger portion configured to receive a refrigerant flow and having a hot side coolant passageway for a hot side coolant flow having a lower temperature than the refrigerant flow, wherein said refrigerant flow is in non-contact thermal communication with the hot side coolant flow, whereby heat energy is transferred from the refrigerant flow to the hot side coolant flow; and a second heat exchanger portion is configured to receive a refrigerant flow exiting from said first heat exchanger portion and having a cold side coolant passageway for a cold side coolant flow having a higher temperature than the refrigerant flow exiting from said first heat exchanger portion, wherein the cold side coolant flow is in non-contact thermal communication with the refrigerant flow, whereby heat energy is transferred from the cold side coolant flow to the refrigerant flow; wherein said first and second heat exchanger portions define a single unitary structure having a continuous torturous refrigerant passageway in thermal contact with both the cold side coolant flow and the hot side coolant flow.