# US 7,406,835 B2 · Cooling system and method for cooling a heat producing system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,406,835 B2 - Document ID: US7406835B2 - Status: Granted - Kind: B2 - Application number: 11/125,440 - Filed: 2005-05-10 - Published: 2006-11-16 - Granted: 2008-08-05 - Earliest claimed: 2005-05-10 - Assignees: EMP Advanced Development, LLC - Inventors: David J. Allen; Mark S. Bader; Robert D. Chalgren, Jr.; Michael P. Lasecki; Michael W. Martin; Keith Brannstrom - Web page: https://patentgrep.com/patent/US7406835B2 ## CPC - F28D 1/0443: {Combination of units extending one beside or one above the other (F28D1/0452 takes precedence)} - F01P 5/02: Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers - F01P 2005/025: {using two or more air pumps} - F01P 2005/046: {with electrical pump drive} - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) ## Abstract A cooling system for cooling a plurality of heat producing systems includes a heat exchanger having a plurality of cooling zones, each of which has a respective inlet and outlet for facilitating flow of a respective temperature control fluid therethrough. Each of the respective temperature control fluids facilitates temperature control of a respective heat producing system. A plurality of fans cool the temperature control fluids flowing through the heat exchanger, and a fan or fans are disposed proximate each zone of the heat exchanger to provide air flow substantially independently from the air flow over the other cooling zones. ## Claims ### Claim 1 A cooling system for cooling a plurality of heat producing systems, the cooling system comprising: a heat exchanger including first and second cooling zones, the first cooling zone including a first inlet for receiving a first temperature control fluid from a first of the heat producing systems and a first outlet for returning the first temperature control fluid to the first heat producing system, the second cooling zone including a second inlet for receiving a second temperature control fluid from a second of the heat producing systems and a second outlet for returning the second temperature control fluid to the second heat producing system; a first fan assembly disposed proximate the first zone and including a first fan operable to move air across the first zone substantially independently of air moving across any other zone of the heat exchanger, thereby facilitating cooling of the first temperature control fluid as it passes through the first zone; a second fan assembly disposed proximate the second zone and including a second fan independently operable from the first fan to move air across the second zone substantially independently of air moving across any other zone of the heat exchanger, thereby facilitating cooling of the second temperature control fluid as it passes through the second zone; a first shroud disposed proximate the first fan and configured to direct the air moved by the first fan through the heat exchanger, and further configured to inhibit mixing of the air moved by the first and second fans; a second shroud disposed proximate the second fan and configured to direct the air moved by the second fan through the heat exchanger, at least one of the shrouds including a heat conductive material; and a control system for controlling operation of the first and second fans and including a controller attached to a portion of the heat conductive material for dissipating heat from the controller. ### Claim 2 (depends on 1) The cooling system of claim 1, wherein the heat exchanger is configured to keep the first and second temperature control fluids separate from each other, thereby facilitating independent temperature control of the first and second heat producing systems. ### Claim 3 (depends on 1) The cooling system of claim 1, further comprising a valve operable to allow selective mixing of the first and second temperature control fluids, thereby facilitating heat transfer between the first and second temperature control fluids. ### Claim 4 (depends on 1) The cooling system of claim 1, further comprising one motor for operating the first and second fans. ### Claim 5 (depends on 1) The cooling system of claim 1, wherein the heat exchanger further includes additional cooling zones, each of the additional cooling zones including an inlet and an outlet for facilitating the flow of a respective temperature control fluid through the respective cooling zone, each of the respective temperature control fluids facilitating temperature control of a respective heat producing system, the cooling system further comprising additional fan assemblies, each of the additional fan assemblies being disposed proximate a respective additional cooling zone and including a respective fan. ### Claim 6 (depends on 1) The cooling system of claim 1, further comprising a plurality of the first fan assemblies, each of the first fan assemblies being disposed proximate the first zone and including a respective fan operable to move air across the first zone substantially independently of air moving across any other zone of the heat exchanger. ### Claim 7 (depends on 6) The cooling system of claim 6, wherein at least one of the first fans is operable independently of at least one of the other first fans. ### Claim 8 (depends on 1) The cooling system of claim 1, further comprising a divider disposed between the first and second fans for inhibiting mixing of the air moved by the first and second fans. ### Claim 9 (depends on 1) The cooling system of claim 1, wherein the controller is disposed on a portion of at least one of the shrouds in an air flow path of at least one of the fans, thereby being cooled by the air moved by the at least one fan. ### Claim 10 (depends on 1) The cooling system of claim 1, wherein the first and second fans are disposed on one side of the heat exchanger, and the first fan is configured to push air through the heat exchanger and the second fan is configured to pull air through the heat exchanger. ### Claim 11 (depends on 1) The cooling system of claim 1, further comprising a control system including a controller, the controller being configured to control operation of the first and second fans. ### Claim 12 A cooling system for a vehicle including a plurality of vehicle systems, the cooling system comprising: a heat exchanger including a plurality of cooling zones, each of the cooling zones having a respective inlet and outlet for facilitating the flow of a respective temperature control fluid therethrough, each of the respective temperature control fluids facilitating temperature control of a respective vehicle system, the heat exchanger being configured such that each of the temperature control fluids are separated from the other temperature control fluids; a plurality of fans for cooling the temperature control fluids flowing through the heat exchanger, at least one of the fans being disposed proximate each of the cooling zones for moving air across a respective cooling zone substantially independently of air moving across any of the other cooling zones, thereby facilitating independent temperature control for each cooling zone; a plurality of shrouds disposed proximate respective fans for directing, and inhibiting mixing of, the air moved by the respective fans; and a control system for controlling operation of the fans and including a controller, the controller being disposed on a portion of at least one of the shrouds in an air flow path of at least one of the fans, thereby being cooled by the air moved by the respective fan. ### Claim 13 (depends on 12) The cooling system of claim 12, further comprising one motor for operating at least two of the fans. ### Claim 14 (depends on 12) The cooling system of claim 12, wherein a plurality of the fans are disposed proximate the same cooling zone. ### Claim 15 (depends on 14) The cooling system of claim 14, wherein two of the fans disposed proximate the same cooling zone are operable independently of each other. ### Claim 16 (depends on 12) The cooling system of claim 12, further comprising a divider disposed between at least two of the fans which are disposed proximate different cooling zones for separating the air flow across respective cooling zones. ### Claim 17 (depends on 12) The cooling system of claim 12, wherein at least one of the shrouds includes a heat conductive material, and the controller is attached to a portion of the heat conductive material for dissipating heat from the controller. ### Claim 18 A cooling system for cooling a plurality of heat producing systems, the cooling system comprising: a heat exchanger including first and second cooling zones, the first cooling zone including a first inlet for receiving a first temperature control fluid from a first of the heat producing systems and a first outlet for returning the first temperature control fluid to the first heat producing system, the second cooling zone including a second inlet for receiving a second temperature control fluid from a second of the heat producing systems and a second outlet for returning the second temperature control fluid to the second heat producing system; a first fan assembly disposed proximate the first zone and including a first fan operable to move air across the first zone substantially independently of air moving across any other zone of the heat exchanger, thereby facilitating cooling of the first temperature control fluid as it passes through the first zone; and a second fan assembly disposed proximate the second zone and including a second fan independently operable from the first fan to move air across the second zone substantially independently of air moving across any other zone of the heat exchanger, thereby facilitating cooling of the second temperature control fluid as it passes through the second zone, and wherein the first and second fans are disposed on one side of the heat exchanger, and the first fan is configured to push air through the heat exchanger and the second fan is configured to pull air through the heat exchanger. ### Claim 19 (depends on 18) The cooling system of claim 18, further comprising a valve operable to allow selective mixing of the first and second temperature control fluids, thereby facilitating heat transfer between the first and second temperature control fluids. ### Claim 20 (depends on 18) The cooling system of claim 18, further comprising a plurality of the first fan assemblies disposed proximate the first zone and including respective fans operable to move air across the first zone substantially independently of air moving across any other zone of the heat exchanger, at least one of the fans of the first fan assemblies being operable to push air through the heat exchanger. ### Claim 21 (depends on 20) The cooling system of claim 20, wherein at least one of the first fans is operable independently of at least one of the other first fans. ### Claim 22 A cooling system for cooling a plurality of heat producing systems, the cooling system comprising: a heat exchanger including first and second cooling zones, the first cooling zone including a first inlet for receiving a first temperature control fluid from a first of the heat producing systems and a first outlet for returning the first temperature control fluid to the first heat producing system, the second cooling zone including a second inlet for receiving a second temperature control fluid from a second of the heat producing systems and a second outlet for returning the second temperature control fluid to the second heat producing system; a first fan assembly disposed proximate the first zone and including a first fan operable to move air across the first zone substantially independently of air moving across any other zone of the heat exchanger, thereby facilitating cooling of the first temperature control fluid as it passes through the first zone; a second fan assembly disposed proximate the second zone and including a second fan independently operable from the first fan to move air across the second zone substantially independently of air moving across any other zone of the heat exchanger, thereby facilitating cooling of the second temperature control fluid as it passes through the second zone; and a valve operable to allow selective mixing of the first and second temperature control fluids, thereby facilitating heat transfer between the first and second temperature control fluids. ### Claim 23 (depends on 22) The cooling system of claim 22, wherein the heat exchanger further includes additional cooling zones, each of the additional cooling zones including an inlet and an outlet for facilitating the flow of a respective temperature control fluid through the respective cooling zone, each of the respective temperature control fluids facilitating temperature control of a respective heat producing system, the cooling system further comprising additional fan assemblies, each of the additional fan assemblies being disposed proximate a respective additional cooling zone and including a respective fan. ### Claim 24 (depends on 22) The cooling system of claim 22, further comprising a plurality of the first fan assemblies, each of the first fan assemblies being disposed proximate the first zone and including a respective fan operable to move air across the first zone substantially independently of air moving across any other zone of the heat exchanger. ### Claim 25 (depends on 24) The cooling system of claim 24, wherein at least one of the first fans is operable independently of at least one of the other first fans.