# US 10,119,530 B2 · Reciprocating compressor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,530 B2 - Document ID: US10119530B2 - Status: Granted - Kind: B2 - Application number: 14/991,478 - Filed: 2016-01-08 - Published: 2016-08-04 - Granted: 2018-11-06 - Earliest claimed: 2015-02-04 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Taemin Kim - Web page: https://patentgrep.com/patent/US10119530B2 ## CPC - F04B 39/0061: {using muffler volumes} - F04B 39/121: {Casings} - F04B 39/123: {Fluid connections} - 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) ## Abstract A reciprocating compressor is provided that may include a shell, a suction pipe coupled to the shell, a driver provided inside of the shell that generates a rotational force, a compression device including a connecting rod that converts the rotational force into a linear driving force, a piston coupled to the connecting rod, and a cylinder into which the piston is movably inserted, a suction muffler provided inside of the shell that reduces a pressure pulsation of a refrigerant suctioned through the suction pipe, and a suction guide that extends from the shell to the suction muffler and includes at least one protrusion that contacts an inner surface of the shell. ## Claims ### Claim 1 A reciprocating compressor, comprising: a shell; a suction pipe coupled to the shell; a driver provided inside of the shell that generates a rotational force; a compression device including: a connecting rod that converts the rotational force into a linear driving force; a piston coupled to the connecting rod; and a cylinder into which the piston is movably inserted; a suction muffler provided inside of the shell that reduces a pressure pulsation of a refrigerant suctioned through the suction pipe; and a suction guide that extends from the shell to the suction muffler, the suction guide including: a guide body having a front surface that faces an inner surface of the shell, the front surface being spaced apart from the inner surface of the shell; a plurality of protrusions that protrudes from the front surface of the guide body and contacts the inner surface of the shell, the plurality of protrusions being spaced apart from each other; and a space defined by the front surface and the plurality of protrusions and through which the refrigerant suctioned through the suction pipe flows into the inside of the shell. ### Claim 2 (depends on 1) The reciprocating compressor according to claim 1, wherein the suction guide further includes a muffler insertion portion that extends towards an inside of the suction muffler. ### Claim 3 (depends on 1) The reciprocating compressor according to claim 1, wherein a number of a plurality of spaces correspond to a number of the plurality of protrusions. ### Claim 4 (depends on 1) The reciprocating compressor according to claim 1, wherein at least one of the plurality of protrusions has a spherical or hemispherical shape. ### Claim 5 (depends on 1) The reciprocating compressor according to claim 1, wherein the suction guide further includes a support provided at an outer surface of the guide body and supported by the suction muffler, and wherein the support includes a stopper that restricts the guide body from moving into the suction muffler. ### Claim 6 (depends on 1) The reciprocating compressor according to claim 1, further including a pipe connector that couples to an outer side of the suction pipe and that passes through the shell. ### Claim 7 (depends on 6) The reciprocating compressor according to claim 6, wherein at least a portion of the pipe connector protrudes inward from the inner surface of the shell, and wherein an end of the pipe connector is provided inside of the guide body. ### Claim 8 A reciprocating compressor, comprising: a shell; a suction pipe coupled to the shell; a driver provided inside of the shell that generates a rotational force; a compression device including: a connecting rod that converts the rotational force into a linear driving force; a piston coupled to the connecting rod; and a cylinder in which the piston is movably inserted; a suction muffler provided inside of the shell that transfers a refrigerant suctioned through the suction pipe to the cylinder; and a suction guide coupled to the suction muffler that transfers the refrigerant suctioned through the suction pipe to the suction muffler, wherein the suction guide device includes: a guide body including a front surface spaced apart from an inner surface of the shell; a plurality of protrusions provided between the front surface and the inner surface of the shell, the plurality of protrusions protruding from the front surface and contacting the front surface of the guide body; and a space defined by the front surface and the plurality of protrusions and through which the refrigerant suctioned through the suction pipe flows into the inside of the shell. ### Claim 9 (depends on 8) The reciprocating compressor according to claim 8, wherein the suction guide further includes: a muffler insertion portion that extends towards an inside of the suction muffler; and a support provided at the guide body and supported by an outer side of the suction muffler. ### Claim 10 (depends on 8) The reciprocating compressor according to claim 8, wherein at least one of the plurality of protrusions protrudes from the front surface toward the inner surface of the shell by a predetermined length and contacts the inner surface of the shell, and wherein the predetermined length is formed within a range of about 0.8 mm to about 1.2 mm. ### Claim 11 (depends on 8) The reciprocating compressor according to claim 8, wherein the guide body has a hollow cylindrical shape in which the refrigerant flows. ### Claim 12 (depends on 11) The reciprocating compressor according to claim 11, wherein the guide body has a cross section which is gradually reduced from the inner surface of the shell towards the suction muffler. ### Claim 13 A reciprocating compressor, comprising: a first shell; a second shell that forms a closed space with the first shell; a suction pipe coupled to the first shell; a driver provided inside of the closed space that generates a rotational force; a compression device including: a connecting rod that converts the rotational force into a linear driving force; a piston coupled to the connecting rod; and a cylinder in which the piston is movably inserted; a suction muffler provided inside of the closed space that transfers a refrigerant suctioned through the suction pipe to the cylinder; and a suction guide coupled to the suction muffler that transfers the refrigerant suctioned through the suction pipe to the suction muffler, wherein the suction guide includes: a guide body including a front surface spaced apart from an inner surface of the first shell; a plurality of protrusions provided between the front surface and the inner surface of the first shell, the plurality of protrusions protruding from and contacting the front surface of the guide body; and a space defined by the front surface and the plurality of protrusions and through which the refrigerant suctioned through the suction pipe flows into the inside of the closed space. ### Claim 14 (depends on 13) The reciprocating compressor according to claim 13, wherein the second shell contacts an upper side of the first shell to form the closed space. ### Claim 15 (depends on 13) The reciprocating compressor according to claim 13, wherein the suction guide further includes: a muffler insertion portion that extends towards an inside of the suction muffler; and a support provided at the guide body and supported by an outer side of the suction muffler. ### Claim 16 (depends on 13) The reciprocating compressor according to claim 13, wherein the cylinder and the piston are formed of an aluminum material. ### Claim 17 (depends on 13) The reciprocating compressor according to claim 13, wherein the guide body has a hollow cylindrical shape in which the refrigerant flows. ### Claim 18 (depends on 17) The reciprocating compressor according to claim 17, wherein the guide body has a cross section which is gradually reduced from the inner surface of the first shell towards the suction muffler.