Abstract: A hermetic reciprocating compressor comprises a hermetic casing and a compressing portion installed inside the casing. The compressing portion includes a cylinder, and a piston reciprocating inside the cylinder. A suction pipe transfers a mixture of compressible and incompressible media (e.g. gaseous refrigerant and lubricating oil) into the casing. A suction muffler has an inlet communicating with the suction pipe and an outlet connected to the compressing portion. A tubular spring has a first end portion of frusto-conical shape fitted into the inlet of the suction muffler so that a space is formed between the first end portion of the spring and the inlet of the suction muffler, and a second end portion connected to the suction pipe. Incompressible medium in the mixture is able to gravitate out of the suction muffler through the space, thereby preventing damage to internal parts of the compressing portion.

Abstract: A reciprocating compressor includes a cylindrical bore in which a piston reciprocates. A cylinder head is situated adjacent an end of the bore and forms a suction chamber and a discharge chamber which communicate with the bore through respective valved passages. Fluid to be compressed enters the suction chamber through an outlet section of a muffler. That outlet section is made of a material having low thermal conductivity (plastic) and fits into the suction chamber to resist the transfer of heat to the suction chamber from the discharge chamber. A capillary tube includes an inlet end submerged in an oil reservoir and an outlet end mounted in a hole formed in the outlet section of the muffler for supplying oil to fluid entering the bore.

Abstract: A reciprocating compressor includes a piston mounted for reciprocation in a bore of a cylinder. A cylinder head is mounted on the cylinder at one end of the bore for conducting fluid to and from the bore. A muffler is connected to the cylinder head for conducting the fluid to the bore. The muffler includes a base member and a muffler body secured thereto. The base member includes a recess in which a leading portion of the muffler body is installed. Hooks formed on the leading portion become caught against securing edges formed in the recess to resist rearward withdrawal of the muffler body. A floor of the body is elastic, to push the hooks against the securing edges. Also, side walls of the recess push elastically against the leading portion of the muffler body. Consequently, there is no play between the muffler body and base member which could produce noisy rattling during operation of the compressor.

Abstract: A reciprocating compressor includes a cylinder block disposed in a chamber formed by a casing. A piston is mounted for reciprocation in a bore of the cylinder block. A valved cylinder head is disposed at an end of the bore. The cylinder head conducts sucked fluid to the bore. The sucked fluid enters the casing through an inlet therein and travels through a suction passage formed by a suction muffler and then through a base muffler before entering the cylinder head. The suction muffler includes exterior holes for communicating the suction passage of the suction muffler with the chamber of the casing, to thereby reduce the suction load occurring at the bore and valve plate.

Abstract: A structurally improved reciprocating compressor is disclosed. The compressor has a base muffler which acts not only as a refrigerant suction pipe and gasket but also as an arrangement for preventing heat from being transferred to the input refrigerant. The base muffler is interposed between the valves and cylinder head. Due to the base muffler, neither the motor heat nor the compressing heat is transferred to the input refrigerant passing the suction pipe part of the base muffler. The base muffler prevents an increase in the specific volume of the input refrigerant and causes smooth circulation of the refrigerant in the compressor. The present invention thus improves refrigerant compressing efficiency and refrigerating capacity of the compressor, and reduces the cost, and improves productivity of the compressor.

Abstract: A compressor includes a motor for reciprocating a piston which sucks-in refrigerant through an inlet, and discharges compressed refrigerant through an outlet. A cylinder head forms a discharge chamber communicating with the outlet, and also forms a recess disposed opposite the inlet. Mounted in the recess is a base muffler which includes a pair of elastically flexible, tapered tubes connected by a snap-in connection to a suction muffler. Refrigerant travels through the suction muffler and the base muffler to the inlet. The base muffler insulates the refrigerant from heat radiated by the motor. A capillary tube conducts oil from an oil reservoir to the base muffler for being mixed with the refrigerant.