Patent ID: 11959492
Assignee: POWEREX-IWATA AIR TECHNOLOGY, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 7:
8. A method of assembling a pump assembly having a first and second stage for cooling process air, the method comprising the steps of:
providing a pump and a motor coupled by a coupling arrangement, the pump having a cooling air intake, a cooling air exhaust, a process air intake, and a process air discharge; and
assembling an enclosed heat exchanger comprising:
forming first and second regions, the first region isolated from the second region;
positioning a first stage of tubing within said first region of the heat exchanger;
positioning a second stage of tubing within said second region of said heat exchanger, such that a baffle is between the first and second stages of tubing, wherein the first and second stages of tubing are positioned to extend along a full length of the heat exchanger, wherein the full length extends from a first side of the heat exchanger to a second side of the heat exchanger, further wherein the first region is nearer the first side relative to the second region, and the second region is nearer the second side, relative to the first region;
forming a process air inlet fluidly coupled to the first region; and
forming a process air outlet fluidly coupled to the second region; and

positioning the heat exchanger relative to the pump such that within said first region said cooling air exhaust from a discharge of said pump and passes through at the first stage of tubing; and positioning the heat exchanger relative to the pump such that within said second region said cooling air intake of said pump passes through at the second stage of tubing, wherein the pump is configured to be cooled by cooling air flowing from the cooling air intake to the cooling air exhaust.