Patent ID: 11867438
Assignee: AIR INTERNATIONAL (US) INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 9:
10. An HVAC system, comprising:
an evaporator including a first tube row including a first plurality of evaporator tubes spaced apart from one another in a lengthwise direction and extending in a heightwise direction with respect to the evaporator, and a second tube row including a second plurality of evaporator tubes spaced apart from one another in the lengthwise direction and extending in a heightwise direction, a first tank at a first end of the first tube row and the second tube row, and a second tank at a second end of the first tube row and the second tube row and opposite the first end, the first plurality of evaporator tubes spaced from the second plurality of evaporator tubes in a widthwise direction;
a condenser;
a compressor;
a first refrigerant path configured for flow through a first expension valve, a first evaporator inlet, within the evaporator, and out of the evaporator through the first evaporator outlet; and
a second refrigerant path configured for flow through a second expansion valve, a second evaporator inlet, within the evaporator, and out of the evaporator through a second evaporator outlet, wherein the system is configured for refrigerant flow from the condenser to the first refrigerant path and the second refrigerant path, and for refrigerant flow from the first refrigerant path and the second refrigerant path to the compressor;
wherein the first refrigerant path is configured for refrigerant flow to enter one of the first and second tank through the first evaporator inlet, flow through a first subsection of the first plurality of evaporator tubes in the heightwise direction to the other of the first and second tank, then through a first subsection of the second plurality of evaporator tubes in an opposite heightwise direction back to the one of the first and second tank, and to exit the evaporator through the first evaporator outlet on the one of the first and second tank.