# US 2014/0196683 A1 · Compressor comprising a pressure-relief groove > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196683 A1 - Document ID: US20140196683A1 - Status: Published application - Kind: A1 - Application number: 14/216,781 - Filed: 2014-03-17 - Published: 2014-07-17 - Earliest claimed: 2011-10-05 - Assignees: Magna Powertrain Bad Homburg GmbH - Applicants: Magna Powertrain Bad Homburg GmbH - Inventors: Michael Krug; Jan Hinrichs - Web page: https://patentgrep.com/patent/US20140196683A1 ## CPC - F04B 39/12: Casings; Cylinders; Cylinder heads; Fluid connections - F01P 1/00: Air cooling - F04B 27/1081: {Casings, housings} - F04B 49/022: {by means of pressure} - F04B 49/035: Bypassing - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - 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 compressor is disclosed. In one aspect, the compressor includes a pressure chamber which is delimited by at least two housing parts, the housing parts including sealing surfaces that are connected by a connection device which applies a contact pressing force between the sealing surfaces. At least one groove extending in a circumferential direction is arranged on at least one sealing surface. At least one relief opening is arranged on at least one of the housing parts. The relief opening connects the groove to the surroundings of the compressor and emanates from the groove. The groove is arranged such that when a predetermined maximum pressure is exceeded in the pressure chamber, a pressure-building medium can gather in the groove and at least partially escape through the relief opening. ## Claims ### Claim 1 A compressor with a pressure chamber, which is delimited by at least two housing parts for use in an air conditioning system of a motor vehicle, wherein the housing parts comprise a plurality of sealing surfaces, which are connected by a connecting device applying a contact pressure on the sealing surfaces, wherein at least one groove extending in a circumferential direction is arranged on at least one of the sealing surfaces, wherein at least one vent opening is arranged on at least one of the housing parts, which connects the groove with the environment of the compressor, wherein the at least one vent opening extends from the groove, and wherein the groove is arranged in such a way that on exceeding a predefined pressure in the pressure chamber a pressurization medium is collected in the groove and at least partially discharged via the vent opening. ### Claim 2 (depends on 1) The compressor according to claim 1, wherein the connecting device comprises a plurality of connecting elements. ### Claim 3 (depends on 2) The compressor according to claim 2, wherein the connecting elements protrude through recesses in the sealing surfaces of the housing parts to be connected. ### Claim 4 (depends on 3) The compressor according to claim 3, wherein the recesses are arranged at substantially equal distances from the edge contour of the sealing surfaces facing the pressure chamber. ### Claim 5 (depends on 4) The compressor according to claim 4, wherein in regard to the recesses for the connecting elements the groove has a larger or a smaller or a substantially identical distance from the pressure chamber. ### Claim 6 (depends on 4) The compressor according to claim 4, wherein in regard to the recesses for the connecting elements the groove has a variable distance from the pressure chamber. ### Claim 7 (depends on 4) The compressor according to claim 4, further comprising at least one sealing element arranged in the at least one groove. ### Claim 8 (depends on 3) The compressor according to claim 3, wherein the connecting elements comprise screws or bolts and are inserted into the recesses in at least one of the housing parts which lead into the recesses in the sealing surfaces. ### Claim 9 (depends on 8) The compressor according to claim 8, wherein the vent opening has at least one relieving opening, which extends from at least one of the recesses to the environment of the compressor, and wherein the relieving opening is spaced apart from the sealing surfaces. ### Claim 10 (depends on 3) The compressor according to claim 3, wherein the vent opening comprises at least one relieving channel in at least one of the sealing surfaces of the housing parts, and wherein the relieving channel extends from the groove to the environment of the compressor. ### Claim 11 (depends on 3) The compressor according to claim 3, wherein the vent opening comprises at least one relieving channel, wherein the relieving channel extends from the groove to the recesses for the connecting elements, and wherein the pressurization medium is configured to be discharged via at least one of the recesses. ### Claim 12 (depends on 2) The compressor according to claim 2, wherein at least one of the connection elements is constructed and arranged in such a way that the medium accumulated in the groove is discharged into the environment of the compressor.