# US 2015/0354898 A1 · Gas quenching cell > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0354898 A1 - Document ID: US20150354898A1 - Status: Published application - Kind: A1 - Application number: 14/762,405 - Filed: 2014-01-22 - Published: 2015-12-10 - Earliest claimed: 2013-01-23 - Assignees: ECM Technologies - Applicants: Ecm Technologies - Inventors: Gérard TISSOT; Francis PELISSIER - Web page: https://patentgrep.com/patent/US20150354898A1 ## CPC - F27D 7/04: Circulating atmospheres by mechanical means - C21D 1/767: with forced gas circulation; Reheating thereof - C21D 9/0062: {Heat-treating apparatus with a cooling or quenching zone} - F27B 3/24: Cooling arrangements - H02K 7/14: Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) - H02K 21/12: with stationary armatures and rotating magnets - F27D: DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE - C21D: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B) - F27B: FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract The invention relates to a quenching cell (40) including an enclosure (11) containing at least one element for stirring (17) a quenching gas at a pressure greater than 0.4 MPa and a synchronous electric motor (42) capable of rotating the stirring element. ## Claims ### Claim 1 A quenching cell comprising an enclosure containing at least one element for stirring a quenching gas at a pressure greater than 0.4 MPa and a synchronous electric motor capable of rotating the stirring element. ### Claim 2 (depends on 1) The quenching cell of claim 1, wherein the synchronous electric motor is tight with respect to the outside of the quenching cell, for a pressure in the synchronous electric motor in the range from 10 Pa to 2,500,000 Pa. ### Claim 3 (depends on 1) The quenching cell of claim 1, wherein the synchronous electric motor comprises at least two steel flanges delimiting a volume containing at least one stator, said flanges resisting the pressure in the synchronous electric motor. ### Claim 4 (depends on 1) The quenching cell of claim 1, comprising a circuit for supplying quenching gas to the enclosure and the synchronous electric motor. ### Claim 5 (depends on 4) The quenching cell of claim 4, wherein the supply circuit is capable of maintaining, during a quenching operation, the pressure in the synchronous electric motor higher than the pressure in the enclosure. ### Claim 6 (depends on 4) The quenching cell of claim 4, wherein the pressure in the synchronous electric motor is greater by at least 500 Pa than the pressure in the enclosure. ### Claim 7 (depends on 4) The quenching cell of claim 4, wherein the supply circuit is capable of maintaining, during a quenching operation, the pressure in the synchronous electric motor equal to the pressure in the enclosure. ### Claim 8 (depends on 1) The quenching cell of claim 1, comprising a sensor of the pressure in the synchronous electric motor and/or a sensor of the difference between the pressure in the synchronous electric motor and the pressure in the enclosure. ### Claim 9 (depends on 4) The quenching cell of claim 4, wherein the supply circuit is capable of controlling the pressure in the synchronous electric motor with the pressure in the enclosure. ### Claim 10 (depends on 1) The quenching cell of claim 1, wherein the synchronous electric motor is located outside of the enclosure and comprises a drive shaft connected to the stirring element through the enclosure. ### Claim 11 (depends on 1) The quenching cell of claim 1, wherein the synchronous electric motor is a radial flow synchronous electric motor. ### Claim 12 (depends on 1) The quenching cell of claim 1, wherein the synchronous electric motor comprises a rotor and two stators located on either side of the rotor. ### Claim 13 (depends on 3) The quenching cell of claim 3, wherein the synchronous electric motor comprises a rotor located between the two flanges and connected to a drive shaft that is connected to the stifling element through the enclosure, each flange comprising a first through opening for the passage of the drive shaft and second through openings around the first opening. ### Claim 14 (depends on 13) The quenching cell of claim 13, wherein at least one of the second openings is connected to a pipe for supplying gas to the motor when the quenching cell is in operation.