Abstract: A refrigerant compressor including a discharge valve system, which is configured in such a manner that the discharge valve system includes recess (124) having discharge hole (125) which communicates with a compression chamber of a cylinder and opening on the bottom surface, a discharge reed (130) for covering discharge hole (125), and stopper (132) formed of a plate spring to be arranged above discharge reed (130), that discharge reed (130) and one end of stopper (132) is fixed to the bottom surface of recess (124) and the other end of stopper (132) comes into contact with contact portion (128) so that stopper (132) and the bottom surface of recess (124) defines a space therebetween, and that discharge reed (130) is arranged in the space. The refrigerant compressor having a high compression efficiency and low variation in noise level can be provided.

Abstract: The present invention relates to a discharging noise system of a hermetic compressor.

Abstract: A compressor muffler (100) for a refrigeration system is provided with an array of Helmholtz resonators (130, 230, 330) formed along an inner surface of a muffler chamber (110) of the muffler.

Abstract: A linear compressor unit including a reciprocating magnet driven by an electromagnetic alternating field. The magnet drives a piston reciprocatingly in a cylinder in a module casing, which casing also encloses a buffer volume. The cylinder is mounted in the casing so that it can oscillate. The cylinder includes an inlet opening coupled to an inlet passage in the module casing lying opposite to one another but without making contact with each other and forming a passage to the buffer volume. At least one restrictor element is located in the passage to dampen sound of the unit.

Abstract: Disclosed herein is a compressor in which a coil weight is wound plural times on a highly vibrational portion of a discharge pipe to increase the mass of the highly vibrational portion, thereby enabling a vibrating frequency of the discharge pipe to be adjusted to a desired value. With this configuration, there is no need to coil up the discharge pipe plural times differently from the prior art. Thereby, the compressor exhibits an effective interior space utility, minimized malfunction rate, and low manufacturing costs.

Abstract: The invention relates to a piston engine comprising a rotatably mounted cylindrical drum (2) provided with a plurality of cylindrical boreholes distributed over the circumference thereof and containing displaceable pistons. Said cylindrical boreholes (3,4) comprise cylindrical openings (35.1, 35.2, . . . 35.9) on one side, which are temporarily connected to one of two control nodules (9, 10) according to the angle of rotation of the cylindrical drum (2), said control nodes being respectively connected to a working line (27, 28). A reversing region (30, 31) is respectively embodied between the control nodules (9, 10), a first end (32) of a pressure compensation line (33) ending in one of the reversing regions (30, 31).

Abstract: A discharge muffler (20) in an HVAC&R system (100) includes a plurality of tubes (34, 38, 42) of predetermined length that are disposed at a predetermined spacing in substantially mutual axial alignment by a plate (30). The tubes (34, 38, 42) are secured adjacent to a compressor discharge (24) to minimize pressure reduction, improve flow characteristics and improve efficiency of the HVAC&R system (100).

Abstract: A compressor apparatus has a housing (22) having first (53) and second (58) ports along a flowpath. One or more working elements (26, 28) cooperate with the housing to define a compression path between suction and discharge locations along the flowpath. A check valve (70) has a valve element having a first condition permitting downstream flow along the flowpath and a second condition blocking a reverse flow. Sound suppressing means (120, 220, 320) at least partially surround the flowpath upstream of the valve element (70).

Abstract: A quiet fluid compressor which is made up of a motor, a compressor, and a storage tank. The motor and the compressor are cylindrical in shape and are joined to each other. The tank is cylindrical in shape and has a central open area going from the top to the bottom of the tank. The compressor/motor unit fits within this open area. The tank surrounding the compressor/motor unit absorbs noise created by the compressor. There is a top opening of the central open area. This opening is covered by a louvered cover containing sound-absorbing foam which prevents emanation of sound. There is a bottom covering containing a plurality of openings which breaks up the sound and prevents redirection of sound through the top opening. The inside of the tank is coated with sound-absorbing foam.

Abstract: A two-stage rotary compressor includes a sealed cylindrical compressor housing in which first, second, third communication holes are provided apart in an axial direction on an outer peripheral wall; an accumulator held at an outside part of the housing; a low-pressure connecting pipe for connecting a bottom communication hole of the accumulator and the second communication hole; and an intermediate connecting pipe for connecting the first and third communication holes. The first and third communication holes are provided nearly in the same locations in the circumferential direction of the housing. The accumulator is held nearly in the same location in the circumferential direction as that of the second communication hole. The second communication hole is provided in a different location in the circumferential direction from those of the first and third communication holes for preventing interference between the low-pressure and intermediate connecting pipes each formed in arc shape.

Abstract: In an acoustic fluid machine, an acoustic resonator gradually reduces in diameter towards the top on which a valve device is provided to suck a gas into the resonator. The gas is compressed in the resonator by a circular-plate piston at the lower end of the resonator and discharged via an outlet of the valve device. The piston comprises a rubber plate fixed to the resonator and a metal plate attached on the rubber plate.

Abstract: A muffler cover of a compression element has discharge outlets or hole portions that discharge a compressed refrigerant gas into a closed vessel from a compression element. A suction pipe provides refrigerant gas, which can be sucked into the compression element in the closed vessel. The suction pipe is attached to the closed vessel. A first direction and a second direction, which correspond to natural vibration modes of the suction pipes, do not coincide with a direction that connects two hole portions. Therefore, even if the refrigerant gas discharged from the compression element resonates in the closed vessel, vibrations of the suction pipe can be reduced.

Abstract: A dual drive compressor is disclosed including a suction chamber having at least one muffler incorporated therein, wherein the at least one muffler attenuates pulsations caused by a fluid received in the compressor.

Abstract: A hermetically encapsulated refrigerant compressor which has a hermetically sealed compressor housing (1), in the interior of which operates a refrigerant-compressing piston-cylinder unit, and is provided with a suction duct (2), via which refrigerant is conveyed into the compressor housing (1), and is provided with a pressure duct (3), via which refrigerant is conveyed out of the compressor housing (1) by the piston-cylinder unit. In order to prevent contact of oil (4) flowing down the compressor housing wall with the suction duct (2) or the pressure duct (3), it is provided in accordance with the invention that in the operating position of the compressor housing (1) deflection means (5, 6) are provided on the same above the passage of the suction duct (2) or pressure duct (3) through the compressor housing wall. The heating of the refrigerant is thus prevented and the efficiency of the refrigerant compressor is increased.

Abstract: A reciprocating compressor in which cylinder bores are formed and a muffler device is provided. The internal space of the muffler device is divided into at least two compartments by a partition wall. A cylindrical body, which allows the two compartments to communicate with each other and has the length of 16 to 50% of the overall length of the internal space, is provided in the partition wall. In particular, the overall length of the internal space of the muffler device is set to be within the range of 100 to 120 mm and the length of the cylindrical body is set to be within the range of 20 to 50 mm. Consequently, the muffler device can effectively attenuate and reduce the pulsation generated from the compressor and can be manufactured at a low cost.

Abstract: A compressor structure for a refrigeration system and a component for a refrigeration system. The compressor structure comprises a compression cylinder; a suction line leading gas to be compressed towards the cylinder; and a discharge line leading the compressed gas away from the cylinder; wherein at least one component of the suction line, the discharge line, or both comprises a thermal barrier layer on a surface of the at least one component.

Abstract: A blower providing a blower mode and a vacuum mode. A casing provides a motor housing installing a motor and a fan housing installing a centrifugal fan rotationally driven by the motor. A partition is disposed and having a first surface defining a motor housing and second surface defining a fan housing. The fan includes a generally circular base plate having one surface in direct confrontation with the second surface. A plurality of base plate through-holes arrayed in an imaginary circle whose center is coincident with the rotation axis of the fan are formed in the base plate. The partition is formed with a plurality of partition through-holes arrayed in the imaginary circle and in selective alignment with the base plate through-holes in accordance with the rotation of the centrifugal fan. Each partition through-hole includes a width increasing region where a width of the partition through-hole in the circumferential direction is gradually increased toward the second surface.

Abstract: A heat-insulating mechanism in a compressor which introduces refrigerant gas from a suction pressure region to a compression chamber and discharges the refrigerant gas from the compression chamber to a discharge pressure region has a circular passage, a communication passage, a cylindrical member and a passage heat-insulating member. The circular passage, which is a portion of the suction pressure region, has a circular cross-section, and is in communication with an external refrigerant circuit. The communication passage, which is a portion of the suction pressure region, intersects the circular passage for connection therewith, and is communicable with the compression chamber. The cylindrical member is fitted into the circular passage. The passage heat-insulating member made of an insulating material covers at least a portion of a passage wall surface which forms the communication passage.

Abstract: The invention relates to a hermetically encapsulated refrigeration compressor comprising a hermetically sealed compressor housing containing a piston-cylinder unit compressing a refrigerating agent. The cylinder is closed by means of a valve plate comprising a pressure borehole and a suction borehole, and a suction channel and a pressure channel are used to suck the refrigerating agent into the suction borehole by means of a suction valve, and to compress the refrigerating agent passing from the pressure borehole into the pressure channel by means of a pressure valve. Preferably, a suction sound absorber is arranged in the suction channel. The aim of the invention is to create one such refrigeration compressor that enables a significant decrease in the suction temperature and the exhaust temperature.

Abstract: [Object of the Invention] An object of the present invention is to provide a compressor comprising a compressing mechanism, a discharge chamber, a housing accommodating the compressing mechanism and the discharge chamber, a discharge port communicating with the discharge chamber through a discharge passage and also with an external refrigerant circuit, a muffler formed by an expanded space disposed on the discharge passage, and a check valve disposed on the discharge passage, wherein the pressure loss caused by the discharge passage is smaller than that in the conventional compressor. [Disclosure of the Invention] A compressor comprises a compressing mechanism, a discharge chamber, a housing accommodating the compressing mechanism and the discharge chamber, a discharge port communicating with the discharge chamber through a discharge passage and an external refrigerant circuit, a muffler formed by an expanded space disposed on the discharge passage, and a check valve disposed on the discharge passage.

Abstract: As an refrigerating machine oil (108) that is enclosed in a sealed vessel (106) along a motor element (111), and a compression element (112) driven by the motor element (111), oil that has as base oil a carboxylic ester compound whose kinematic viscosity is 6 mm2/s or less at 40 degrees, and 2 mm2/s or less at 100 degrees, and that has one ester group as a chief ingredient is used. Thereby, the extraction force of oligomer contained in an organic material can be suppressed to hold comparatively much oligomer in the oil, and the oligomer can be kept from precipitating, and depositing in a refrigeration system, thereby blocking a refrigerant passage, such as a muffler or piping is suppressed.

Abstract: The invention provides an oil pump resonator in which various vibrations caused by pulsations that change in response to changes in oil pressure on a discharge port side can be attenuated by a resonator that comprises only one chamber, whereby the volume occupied by the resonator can be minimized. An oil pump in an engine, for feeding oil from a suction port to a discharge port through rotation of a rotor fitted in a pump housing, includes: a discharge flow channel communicating with the discharge port; a resonator comprising an introduction channel formed in the discharge flow channel and a chamber communicating with the introduction channel; and a piston having a leading end face section that makes up an inner wall face of the chamber, and reciprocating in response to pulsation changes. The piston slides so as to reduce the volume of the chamber as the frequency distribution of the pulsations becomes higher.

Abstract: A compressor assembly may include a shell, a discharge fitting, a muffler, a compression mechanism, and a motor. The shell may have an opening therethrough with the discharge fitting generally extending therefrom. The muffler may be in communication with the discharge fitting and may be external to the shell. The muffler may have an inlet proximate the discharge fitting, an outlet distal from the discharge fitting, and a body portion extending therebetween. The muffler may include a valve assembly proximate the outlet. The compression mechanism may be contained within the shell and include a suction inlet and a discharge passageway. The discharge passageway may be connected to the opening in the shell for direct discharge of refrigerant from the compression mechanism to the discharge fitting. The motor may be contained within the shell and drivingly coupled to the compression mechanism.

Abstract: A device for rapidly moving mechanically actuated devices, such as switches and valves with the capability of sub-millisecond response times being achievable with moving masses exceeding one kilogram. Response times approaching that of explosively actuated devices are obtained while retaining the repetitive cycling capability of non-explosively operated devices. Electrical energy stored in a capacitor pulses through electrodes and closed and open ends of a capillary tube to rapidly heat a gas and raise its pressure to a thousand atmospheres or more. The high pressure gas acts on a piston, accelerating it for a short distance before the pressure is vented around the piston to quickly reduce the drive force. The moving piston is brought to a stop by a hydraulic damping device. A reset device resets the piston, the capillary is refilled with working gas, and the capacitor is charged fro the next operation.

Abstract: A vibration reduction structure of a reciprocating compressor comprises: a case having a suction pipe for introducing a refrigerant and a discharge pipe for discharging a refrigerant at both sides thereof; an assembly installed in the case to compress a refrigerant and composed of a cylinder, a piston, a driving unit, and a discharge valve assembly; a loop pipe installed between the discharge valve assembly and the discharge pipe with a curved shape; and a connection unit for connecting a first point of the loop pipe and a second point of the loop pipe facing the first point and thereby reducing a vibration transmission. According to this, vibration generated as the piston is operated can be transmitted to the compressor through many paths including the loop pipe and the additional connection unit. Also, generated vibration can be canceled to each other due to its phase difference, thereby preventing vibration from being transmitted to the entire case.

Abstract: A suction muffler receives low-temperature refrigerant gas discharged into a hermetic container from a suction pipe by a gas catcher, and feeds the gas to a compressor. The lower end of an opening of the gas catcher is located at a position lower than the lower end of an orifice of the suction pipe so as to catch the refrigerant gas falling obliquely downward inside the hermetic container.

Abstract: The invention concerns an external gear hydraulic pump including a pump body housing rotating pinions that mutually engage. Located on opposite sides of the body are a cover and a support, forming an outlet manifold for high pressure fluid. Acoustic insulation elements damp the vibrations produced by the pinions. The acoustic insulation elements acoustically decouple the pump body from the support.

Abstract: The present invention discloses a linear compressor in which a piston is linearly reciprocated inside a cylinder, for sicking a refrigerant into a compression space between the piston and the cylinder, and compressing and discharging the refrigerant, and especially, a structure of discharging the refrigerant for the linear compressor which can reduce a pulsation of a high pressure discharged refrigerant, by making the refrigerant compressed in the compression space flow from a sub-discharge space with a relatively small volume to a sub-discharge space with a relatively large volume in a discharge chamber. As a result, the structure of discharging the refrigerant for the linear compressor can efficiently reduce noise and vibration.

Abstract: A hermetically encapsulated refrigerant compressor, comprising a hermetically sealed compressor housing, in the interior of which a piston-cylinder unit works which compresses a refrigerant, whose cylinder housing (3) is sealed by means of a valve plate (16) comprising a pressure bore (25) and an intake bore (15), and an intake duct and a pressure duct are provided through which refrigerant is drawn into the intake bore (15) via a suction valve and is compressed via a pressure valve from the pressure bore (25) into the pressure duct, with a muffler (11) preferably being arranged in the intake duct. A clamping element (18) is provided which clamps the valve plate (16) at least along a section of its circumference, preferably along the entire circumference, against the cylinder housing (3).

Abstract: A compressor has first and second enmeshed rotors rotating about first and second axes to pump refrigerant to a discharge plenum. The compressor includes a muffler system comprising a sound absorbing first element and a sound absorbing second element. The second element at least partially surrounds the first element and defines a generally annular flow path portion between the first element and the second element At least one of the first and second elements comprises an expanded bead material.

Abstract: A compressor has first and second enmeshed rotors: rotating about first and second axes. The first rotor is supported by a bearing system carried by a bearing case. The bearing case has at least a first port to a discharge plenum. A first sound-absorbing material is positioned within the first port.

Abstract: A rear housing for a compressor reduces NVH without increasing the overall size of the compressor or inducing flow loss. Generally, the compressor includes a cylinder block receiving lower pressure fluid from the rear housing and providing higher pressure fluid back to the rear housing. The rear housing includes an annular outer wall and an annular inner wall defining a suction chamber and a discharge chamber. An inlet is in fluid communication with the suction chamber. An outlet is in fluid communication with the discharge chamber. The outlet includes a discharge passageway having a tubular member projecting into the discharge chamber. The tubular member is defined by a side wall and a closed end wall. The side wall includes a plurality of holes fluidically connecting the discharge chamber and the discharge passageway.

Abstract: A compact compressor including one or more heads. Each of the compressor heads is configured with at least one of the intake and output valves incorporated into the piston head. The compact compressor also has a cylinder with a reduced mass, increased surface area, and metal to metal contact with the housing for greater dissipation of heat generated by the compressor.

Abstract: A suction muffler for a refrigeration compressor, comprising a hollow body defining at least one dampening chamber that carries a gas inlet duct and a gas outlet duct presenting an inlet opening and an outlet opening, for communicating the interior and the exterior of the dampening chamber, at least one of the gas inlet and gas outlet ducts presenting at least one closed end, one of the inlet and outlet openings being positioned at a certain distance from said closed end, smaller than the distance of said opening in relation to the other opening of the same duct and in a region of the latter presenting a minimum acoustic pressure for a determined frequency, the dimensioning of said duct and of the cross section of the first of said openings being achieved so as to minimize the gas pulsation noises inside the suction muffler.

Abstract: A device for sucking in and compressing at least one gas in a fuel cell system has a compressor for the gas connected, at its gas inlet, to a gas filter system via an elastic, sealed gas-routing passage made from textile material.

Abstract: A hermetic compressor for adjusting the length and cross sectional area of a communication path as a refrigerant flow passage, so as to attenuate a discharge pulsation and consequently, a vibration and noise thereof. The hermetic compressor, which includes a cylinder head having a discharge chamber to discharge a compressed refrigerant and a discharge muffler to receive the refrigerant discharged from the discharge chamber, further includes a communication path to communicate the discharge chamber and the discharge muffler with each other, so as to allow the refrigerant to flow from the discharge chamber into the discharge muffler, and an auxiliary communication tube to increase a length of the communication path for increasing a refrigerant flow distance. The auxiliary communication path reduces the cross sectional area of a refrigerant flow passage while increasing a refrigerant flow distance, thereby attenuating a low-frequency component of the discharge pulsation.

Abstract: Disclosed is a suction muffler for a hermetic compressor. The suction muffler includes first and second bodies coupled to each other. The first and second bodies have coupling protrusion and recess formed in corresponding positions, respectively. A coupling rib protrudes from the coupling protrusion, and a coupling channel is formed as an indentation on the coupling recess. Coupling guide surfaces are formed on corresponding portions of the coupling rib and recess, respectively, so that the coupling protrusion and recess can be fastened to each other more smoothly. The coupling guide surfaces of the coupling protrusion and recess guide and facilitate the coupling between the first and second bodies. The coupling protrusion and recess are coupled to each other by geometric characteristics so that no separate process is necessary to couple the first and second bodies to each other. This improves the productivity and quality of the suction muffler.

Abstract: A hermetic compressor having improved configuration of a cylinder head to more efficiently attenuate noise and vibration of refrigerant discharge. The hermetic compressor includes a cylinder block having a compression chamber in which a piston rectilinearly reciprocates, and a cylinder head coupled with the cylinder block to hermetically seal the compression chamber. The cylinder head has a suction chamber and discharge chamber, which are partitioned from each other. The suction chamber serves to guide a refrigerant to be introduced into the compression chamber, and the discharge chamber serves to guide the refrigerant, which was delivered from the compression chamber after being compressed in the compression chamber, to the outside. The hermetic compressor also includes a valve device interposed between the cylinder block and the cylinder head, to control movement of the refrigerant from the suction chamber to the compression chamber or from the compression chamber to the discharge chamber.

Abstract: Disclosed is a reciprocating compressor having an assembly structure of a suction muffler, in which a supporting unit is formed on an inner circumferential surface of a resonant container of the suction muffler and a baffle is assembled in the resonant container by the supporting unit. By forming protrusions in the resonant container and inserting a baffle between the protrusions, the suction muffler can be easily and simply assembled. Accordingly, production costs can not only be reduced but also an increased noise reduction effect is obtained by precisely regulating an assembly position.

Abstract: A hermetic compressor includes a hermetic container having an inner space, a cylinder accommodated in the hermetic container and arranged to compress refrigerant, an intake muffler accommodated in the hermetic container and having a silencer space having a longitudinal direction, a communication tube communicating with the cylinder, and a tail tube communicating with the inner space of the hermetic container. The communication tube and the tail tube have first and second opening ends opening in the silencer space, respectively. The first and second opening ends are located in a predetermined direction from a center of the silencer space along the longitudinal direction of the silencer space. A distance between the first opening end and the second opening end along the longitudinal direction is shorter than at least one of a distance between the first opening end and the center along the longitudinal direction and a distance between the second opening end and the center along the longitudinal direction.

Abstract: An exemplary noise damper for a compressor of a turbocharger includes a compressor housing comprising a cavity substantially adjacent a gas flow surface of a conduit to a compressed gas outlet of the compressor housing and an insert that spans the cavity and forms a wall of the cavity where the wall includes one or more openings to the cavity to thereby allow acoustic energy to be damped by the cavity. Various other exemplary technologies are also disclosed.

Abstract: A medical instrument device interconnection system decreases the vibrational effects on a hospital pole. The medical device is contained in a case and the case has a first clamping member, a first biasing apparatus, a second clamping member, a second biasing apparatus, and a pole receiving trench. Each clamping member has a preferred position, an attachment position and a maximum tension position. In the preferred position the respective biasing members position the respective clamping member's distal end as close to each other as possible which inhibits a conventional hospital pole from entering the pole receiving trench. To obtain the maximum tension position, the person positioning the medical instrument device on the hospital pole aligns the pole receiving trench with the hospital pole so the hospital pole contacts the clamping members' exterior surface in the preferred position.

Abstract: A hermetic compressor has a hermetic container, a suction pipe, a compressing mechanism and a suction muffler. The suction pipe includes a large diameter part opening to an inside of the hermetic container and a small diameter part connected to an external refrigerating system, and the suction pipe is fixed with the hermetic container. The compressing mechanism is accommodated inside the hermetic container. The suction muffler forms a muffling space communicated with the compressing mechanism. The suction muffler is provided with an inlet opening which communicates the muffling space with an inside space of the hermetic container and faces closely an opening of the large diameter part of the suction pipe.

Abstract: A compressor apparatus having a check valve (70) having a first condition permitting downstream flow along the flowpath and a second condition blocking a reverse flow. The valve element includes a resonator (112).

Abstract: A compressor includes a housing and one or more working elements. A muffler is located downstream of the discharge plenum and a helmholtz resonator is located in the discharge plenum upstream of the muffler.

Abstract: The present invention provides a compressor capable of supplying a lubricating oil stably to the refrigerant suction side of a compression section even if a lubricating oil is discharged into an oil storage chamber with great force. In this compressor, the oil storage chamber is provided so that two chambers of a first oil storage chamber and a second oil storage chamber communicate with each other, the lubricating oil discharged from a separation chamber is received by the first oil storage chamber, and the lubricating oil is supplied from the second oil storage chamber to the refrigerant suction side of the compression section. Therefore, even if the oil surface of the first oil storage chamber is disturbed by the force of the lubricating oil discharged from the separation chamber, the lubricating oil can always be supplied stably without hindrance to the supply of lubricating oil to the refrigerant suction side of the compression section.

Abstract: The present invention relates to a compressor. In one aspect of the present invention, a compressor is provided, including a cylinder having a compression chamber, a valve assembly mounted on one open end of the cylinder, and a head assembly on the valve assembly. The head assembly includes a suction muffler, a head plate, a head cover, a damping pipe, and a discharge muffler. The suction muffler includes at least one wing on an outside surface of an outlet part thereof, and the head plate includes a first cut away part for inserting the wing of the outlet part. The head cover is closed fastened to the head plate so as to press down the suction muffler. In the meantime, the head plate includes a recess for inserting the middle part of the damping pipe therein to hold the damping pipe, and the discharge muffler is fitted to one surface of the head plate to surround the damping pipe.

Abstract: Suction muffler connector, and compressor therewith, the suction muffler connector in a compressor having a suction pipe for guiding refrigerant into the compressor, and a suction muffler for attenuating noise of the refrigerant in the suction pipe including a connection pipe having one side connected to the suction pipe for guiding the refrigerant to the suction muffler, and a connection pipe fitted to surround the connection spring for preventing exposure of an outside circumference of the connection spring, having a top part held at an inlet to the suction muffler, thereby preventing leakage of refrigerant introduced into the suction muffler.

Abstract: This wet compression invention with a vaporizable fluid mist demonstrates major performance improvements over the relevant art in achieving a high degree of saturation, providing sensible cooling, strongly reducing the temperature increase due to compression work, reducing excess diluent air flow for downstream combustion, reducing compression noise, and increasing the achievable compressor pressure ratio?.

Abstract: A hermetic compressor has a hermetic container storing an oil, and a compressing element accommodated in the hermetic container and compressing a refrigerant gas; the compressing element has a compressing chamber, a cylinder forming the compressing chamber, a piston inserted into the cylinder and reciprocating, and a suction muffler (140) whose one end communicates with the compressing chamber; and the suction muffler (140) has a sound deadening space (142), a gas flow forming part (144) forming a gas flow (143) flowing in a constant direction in the sound deadening space (142), and an oil discharged opening (146) provided in a downstream side of the gas flow (143) in a lower part of the sound deadening space (142). By this constitution, there is realized the hermetic compressor in which the oil is more difficult to remain in the suction muffler (140), whose noise is lower, and whose performance is stabilized.