# US 2014/0190184 A1 · Cooling system for a machine and method of assembly of same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190184 A1 - Document ID: US20140190184A1 - Status: Published application - Kind: A1 - Application number: 13/736,391 - Filed: 2013-01-08 - Published: 2014-07-10 - Earliest claimed: 2013-01-08 - Assignees: General Electric Company - Applicants: General Electric Company - Inventors: Sachin Vitthal Mahajan - Web page: https://patentgrep.com/patent/US20140190184A1 ## CPC - F25B 21/02: using Peltier effect; using Nernst-Ettinghausen effect - H02K 9/10: by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing - Y10T 29/49359: Cooling apparatus making, e.g., air conditioner, refrigerator - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A cooling system for rotating machines, such as electric motors, is provided. A heat exchanger housing is coupled with the housing of an electric motor. At least one Peltier effect device is coupled to an outer wall of the heat exchanger housing. At least one outflow air passage and at least one return air passage are defined within the heat exchanger housing to extend between the motor housing and the outer wall of the heat exchanger housing. The at least one outflow air passage transports heated air to the outer wall to facilitate heat transfer from the air to the outer wall. The at least one Peltier effect device facilitates heat transfer from the outer wall. ## Claims ### Claim 1 A cooling system for a machine including a machine housing, said cooling system comprising: a heat exchanger housing coupled to the machine housing, said heat exchanger housing comprising an outer wall, said heat exchanger housing defining at least one outflow air passage therein and coupled in flow communication with an interior region defined in the machine housing, said heat exchanger housing further defining at least one return air passage coupled in flow communication with the interior region of the machine housing to enable air to be channeled from the interior region towards said outer wall for transferring heat from the air to said outer wall; and at least one Peltier effect device coupled to said outer wall of said heat exchanger housing, said at least one Peltier effect device configured to facilitate heat transfer from said outer wall. ### Claim 2 (depends on 1) A cooling system in accordance with claim 1, wherein said at least one outflow air passage comprises at least two outflow air passages separated from each other by a dividing wall. ### Claim 3 (depends on 1) A cooling system in accordance with claim 1, wherein said at least one outflow air passage extends substantially parallel to said return air passage. ### Claim 4 (depends on 1) A cooling system in accordance with claim 1, wherein said at least one outflow air passage extends from the machine housing to said outer wall. ### Claim 5 (depends on 1) A cooling system in accordance with claim 1, wherein said at least one return air passage extends from the machine housing to said outer wall. ### Claim 6 (depends on 1) A cooling system in accordance with claim 1, wherein the machine includes a rotor shaft, at least one of said at least one outflow air passage and said at least one return air passage is oriented substantially perpendicular to the rotor shaft. ### Claim 7 (depends on 1) A cooling system in accordance with claim 1, wherein the machine housing has a first length, and said heat exchanger housing has a second length that is approximately equal to the machine housing first length. ### Claim 8 (depends on 1) A cooling system in accordance with claim 1, wherein said at least one outflow air passage is adjacent to said at least one return air passage. ### Claim 9 A method for assembling a cooling system for a machine including a machine housing, said method comprising: coupling a heat exchanger housing to the machine housing, wherein the heat exchanger housing includes an outer wall; coupling at least one outflow air passage defined within the heat exchanger housing in flow communication with an interior region defined in the machine housing; coupling at least one return air passage defined within the heat exchanger housing in flow communication with the interior region of the machine housing and in flow communication with the at least one outflow air passage, to enable air to be channeled from the interior region towards the outer wall to facilitate heat transfer heat from the air to the outer wall; and coupling at least one Peltier effect device to the outer wall of the heat exchanger housing, wherein the at least one Peltier effect device facilitates heat transfer from the outer wall. ### Claim 10 (depends on 9) A method in accordance with claim 9, wherein coupling at least one outflow air passage comprises: coupling at least two outflow air passages within the heat exchanger housing; and isolating the at least two outflow air passages from each other by a dividing wall. ### Claim 11 (depends on 9) A method in accordance with claim 9, further comprising coupling said at least one outflow air passage parallel to said return air passage. ### Claim 12 (depends on 9) A method in accordance with claim 9, further comprising coupling said at least one outflow air passage to extend from the machine housing to said outer wall. ### Claim 13 (depends on 9) A method in accordance with claim 9, further comprising coupling said at least one return air passage to extend from the machine housing to said outer wall. ### Claim 14 (depends on 9) A method in accordance with claim 9, wherein the machine includes a rotor shaft, said method further comprising orienting at least one of said at least one outflow air passage and said at least one return air passage substantially perpendicular to the rotor shaft. ### Claim 15 (depends on 9) A method in accordance with claim 9, wherein the machine housing has a first length, said method further comprising configuring said heat exchanger housing with a second length that is approximately equal to the machine housing first length. ### Claim 16 (depends on 9) A method in accordance with claim 9, further comprising coupling said at least one outflow air passage adjacent to said at least one return air passage. ### Claim 17 A machine comprising: a housing; a heat exchanger housing coupled to the machine housing, said heat exchanger housing comprising an outer wall, said heat exchanger housing defining at least one outflow air passage coupled in flow communication with an interior region defined in the machine housing, said heat exchanger housing further defining at least one return air passage coupled in flow communication with said machine housing interior region and in flow communication with said at least one outflow air passage to enable air to be channeled from said interior region towards said outer wall to facilitate heat transfer from said outer wall; and at least one Peltier effect device coupled to said outer wall, said at least one Peltier effect device configured to facilitate heat transfer from said outer wall. ### Claim 18 (depends on 17) A machine in accordance with claim 17, wherein said at least one outflow air passage comprises two outflow air passages separated from each other by a dividing wall. ### Claim 19 (depends on 17) A machine in accordance with claim 17, wherein said at least one outflow air passage extends substantially parallel to said return air passage. ### Claim 20 (depends on 17) A machine in accordance with claim 17, wherein said at least one outflow air passage extends from the machine housing to said outer wall.