# US 2010/0166586 A1 · Hermetic compressor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0166586 A1 - Document ID: US20100166586A1 - Status: Published application - Kind: A1 - Application number: 12/346,163 - Filed: 2008-12-30 - Published: 2010-07-01 - Earliest claimed: 2008-12-30 - Assignees: Samsung Gwangju Electronics Co., Ltd. - Inventors: Dae Il Kwon; Min Cheul Yun - Web page: https://patentgrep.com/patent/US20100166586A1 ## CPC - F04B 39/0038: {of inlet or outlet channels} - F04B 39/0061: {using muffler volumes} - F04B 53/002: {by encapsulation} - Y10S 181/403: Refrigerator compresssor muffler - 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) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A hermetic compressor having an improved refrigerant discharge path to efficiently reduce pulsation of a refrigerant to be discharged. The hermetic compressor includes a frame, a cylinder provided at one side of the frame and having a compression chamber, a cylinder head coupled to the cylinder so as configured to hermetically seal the compression chamber and having a refrigerant discharge chamber to receive a refrigerant discharged from the compression chamber, a damping discharge chamber provided at the other side of the frame configured to reduce pressure pulsation of the refrigerant having passed through the refrigerant discharge chamber, a discharge guide path formed in the frame connecting the refrigerant discharge chamber and the damping discharge chamber, a discharge pipe having an entrance end connected to the damping discharge chamber so as to guide the refrigerant, having passed through the damping discharge chamber, to outside of the hermetic compressor, and an extension tube provided in the damping discharge chamber. The extension tube has an entrance end connected to an exit end of the discharge guide path, an exit end being spaced apart from an entrance end of the discharge pipe, and at least a portion of the extension tube being bendable. ## Claims ### Claim 1 A hermetic compressor comprising of: a frame; a cylinder provided at one side of the frame and having a compression chamber; a cylinder head coupled to the cylinder so as configured to hermetically seal the compression chamber and having a refrigerant discharge chamber to receive a refrigerant discharged from the compression chamber; a damping discharge chamber provided at the other side of the frame configured to reduce pressure pulsation of the refrigerant having passed through the refrigerant discharge chamber; a discharge guide path formed in the frame connecting the refrigerant discharge chamber and the damping discharge chamber; a discharge pipe having an entrance end connected to the damping discharge chamber so as to guide the refrigerant, having passed through the damping discharge chamber, to outside of the hermetic compressor; and an extension tube provided in the damping discharge chamber, having an entrance end connected to an exit end of the discharge guide path and an exit end of the extension tube being spaced apart from an entrance end of the discharge pipe, and at least a portion of the extension tube being bendable. ### Claim 2 (depends on 1) The compressor according to claim 1, wherein the at least a portion of the extension tube is bent to have a coil form. ### Claim 3 (depends on 1) The compressor according to claim 1, wherein the damping discharge chamber includes a cup formed in the frame having an open end, and a cover to cover the open end of the cup, and wherein the extension tube is pushed by the cover in the course of coupling the cover onto the cup, thereby being pressed between a bottom surface of the cup and an inner surface of the cover. ### Claim 4 (depends on 3) The compressor according to claim 3, wherein substantially the entire extension tube is bent to have a coil form. ### Claim 5 (depends on 3) The compressor according to claim 3, wherein the exit end of the discharge guide path is formed at one side of a bottom surface of the cup. ### Claim 6 (depends on 1) The compressor according to claim 1, wherein the entrance end of the extension tube is forcibly press-fitted into the exit end of the discharge guide path. ### Claim 7 A damping discharge chamber for a hermetic compressor, comprising: a cup having a bottom portion, an open end, and a first opening for receiving refrigerant; a cover for covering the open end of the cup, having a second opening for discharging the refrigerant; an extension tube being bent in a coil form and disposed inside the cup and the cover, having an entrance end inserted in the first opening of the cup, and an exit end pressing against an inner wall of the cover. ### Claim 8 (depends on 7) The damping discharge chamber of claim 7, wherein the exit end of the extension tube is spaced apart from the second opening of the cover. ### Claim 9 (depends on 7) The damping discharge chamber of claim 7, wherein the extension tube is made of metal. ### Claim 10 (depends on 9) The damping discharge chamber of claim 9, wherein the metal is aluminum. ### Claim 11 (depends on 7) The damping discharge chamber of claim 7, further comprising a bolt; the bottom portion of the cup comprising a boss; and the cover further comprising a hole; wherein the bolt is inserted through the hole of the cover and fastened to the boss. ### Claim 12 (depends on 7) The damping discharge chamber of claim 7, wherein the first opening of the cup is coupled to a discharge guide path for receiving the refrigerant from a refrigerant discharge chamber in the hermetic compressor, and wherein the second opening of the cover is coupled to a discharge pipe for discharging the refrigerant, having passed through the damping discharge chamber, to outside of the hermetic compressor.