Abstract: A linear compressor includes a casing, a back cover supported in the casing, an intake flow path member coupled to the back cover, and an intake muffler of which at least a portion linearly reciprocates inside the intake flow path member. The intake flow path member includes a first hole that is formed in a front surface and is penetrated by the intake muffler, and a flow path guide that extends axially forward from a rear surface and has an opened front and an opened rear. A noise of a refrigerant passing through the intake flow path member can be reduced through an expansion space between the flow path guide and an inner surface of the intake flow path member.

Abstract: A discharge muffler for a fluid pump is formed by a cowling and a muffler insert configured to be removably inserted into a muffler receptacle of the cowling. The muffler insert includes a muffler inlet, a muffler outlet, and a plurality of muffler walls. The pump includes a pumping stage, a motor, and a drive shaft coupled between the pumping stage and the motor. When the muffler insert is inserted into the muffler receptacle, the muffler inlet communicates with the pumping stage, and the cowling and the muffler insert cooperatively define the discharge muffler. The discharge muffler is configured or effective to suppress noise generated by fluid discharged from the pumping stage.

Abstract: The present disclosure discloses a silent air pump box comprising a box body, an upper cover, a supporting platform, an air pump, an air valve, an air pipe and a silencing pipe. The present disclosure further provides an intelligent adjustment mattress, which comprises the silent air pump box and an airbag layer, wherein the silent air pump box is provided at the tail of the mattress.

Abstract: A linear compressor includes: a shell including an intake pipe configured to suction a refrigerant, a piston including a piston body, an intake muffler including a first muffler that includes a first muffler body defining a main flow passage and a first muffler flange extending in a radial direction from the first muffler body, and at least one auxiliary flow passage disposed between an outer peripheral surface of the first muffler body and an inner peripheral surface of the piston body and configured to guide the refrigerant remaining between the first muffler body and the piston body to an outside of the piston. A cross-sectional area of the at least one auxiliary flow passage is less than a cross-sectional area of an inlet hole provided at a rear end of the main flow passage and greater than or equal to 10% of the cross-sectional area of the inlet hole.

Abstract: A method of assembling a compressor system includes attaching at least two pulsation damper stages to a discharge port on a compressor, and attaching additional pulsation dampening stages if additional stages are desired. A compressor and discharge system is also disclosed.

Abstract: A compressor is disclosed. A compressor according to the present discloser includes a piston structure which has a guide member reciprocating inside a cylinder in an axial direction, and a magnet frame which supports a mover moving together with the piston structure, in which the piston structure includes the guide member, a mount member connected to the magnet frame, and an elastic member provided between the guide member and the mount member and capable of elastic deformation.

Abstract: A modular fan cover assembly for inclusion on an electric motor is selectively configurable for degrees of reduced noise operation. The modular fan cover assembly includes a plurality of cooperating components arranged to direct fluid communication through the assembly. The components may include, for example, a fan cover defining a fan chamber for enclosing the fan, an inlet cover including an inlet chamber and a plurality of inlet apertures, and a silencing insert selectively includable with the fan cover assembly that may include one or more silencing features. The selective combination of the components can redirect airflow through various turns or bend in the modular fan cover assembly to trap or suppress noise propagating from the electric motor. The modular fan cover assembly may be operatively equipped with a blower assembly.

Abstract: The pump has a casing accommodating a piston and a driving part. The casing has a first casing member having a driving part retaining portion retaining the driving part, a second casing member fixedly stacked on the first casing member in the reciprocating direction of the piston, and a cylindrical pump chamber peripheral wall member disposed around a head of the piston. The second casing member has an end wall portion extending in a transverse direction substantially perpendicular to the reciprocating direction. A pump chamber, a delivery chamber, and a buffer chamber are defined between the first casing member and the end wall portion of the second casing member. The pump chamber, the delivery chamber, and the buffer chamber are disposed side-by-side in the transverse direction.

Abstract: A motor assembly for compressing a fluid by causing a rotational shaft to reciprocate by providing a drive force to the rotational shaft, and a reciprocating compressor including a motor assembly are provided. The motor assembly may include a cylinder block in which a bore is formed and which is penetrated by the rotational shaft, a stator coupled to the cylinder block, a rotor installed at an outer circumferential surface of the stator so as to be rotated by the stator and which is coupled to the rotational shaft so as to rotate together with the rotational shaft, and at least one fastening member that fastens the stator and the cylinder block to each other such that the stator is supported by the cylinder block.

Abstract: Provided is a linear compressor. The linear compressor includes a shell, a compressor body disposed in the shell, and a first support device coupled to a front portion of the compressor body in an axial direction to support the compressor body. The first support device may be disposed between an inner circumferential surface of the shell and the compressor body to support the compressor body in a radial direction.

Abstract: A compressor is disclosed, which comprises a case, a cylinder disposed inside the case, a piston moving inside the cylinder, and a muffler provided in the piston. The muffler includes a fluid pipe provided with a resonant space formed between an outer circumferential surface and an inner circumferential surface of the piston, and a guide panel protruded from the outer circumferential surface of the fluid pipe to the inner circumferential surface of the piston and extended along an outer circumferential direction of the fluid pipe. The guide panel is provided in a plural number, and is partially opened along the outer circumferential direction of the fluid pipe to form an open area, and the open area formed in any one guide panel is covered by its adjacent guide panel.

Abstract: A hermetic compressor is disclosed. The hermetic compressor comprises compressing unit and an electromotive unit. The compressing unit comprises: a cylinder block having a compression chamber; cylinder head having a discharge chamber which is controllably couplable to the compression chamber; a discharge muffler body portion and a discharge muffler cover which form a discharge muffler chamber coupled to the discharge chamber; a piston configured to compress a refrigerant in the compression chamber; and a main frame having a least one mounting leg. The electromotive unit comprises: a stator; a rotor; and a crankshaft coupled to the rotor. The electromotive unit is configured such that rotary motion of the rotor relative to the stator causes rotation of the crankshaft which drives the piston to compress the refrigerant in the compression chamber.

Abstract: A spray device comprises a diaphragm pump, a spray gun and a hose. The diaphragm pump comprises an air outlet to supply air flow, a casing and a pump assembly disposed in the casing. The spray gun comprises a housing and a Venturi tube arranged entirely inside the housing. The housing has an air inlet to receive the air flow supplied from the diaphragm pump and guide the air flow into the Venturi tube. The spray gun comprises a paint receptacle that receives and holds therein a paint material that is supplied into the spray gun and atomized to form paint droplets and entrain the air flow received from the diaphragm pump to allow the paint droplets to be sprayed onto a workpiece. The hose has two ends respectively coupled to the air outlet of the diaphragm pump and the air inlet of the spray gun.

Abstract: A vehicle heater includes a heater housing (12), through which heating air to be heated can flow, with a heating air inlet area and with a heating air outlet area. A burner unit is arranged in the heater housing. A combustion air blower is arranged in the heater housing for feeding combustion air to the burner unit. A heat exchanger unit is arranged in the heater housing (12). Heating air flowing through the heater housing (12) can flow around the heat exchanger unit. A combustion air intake muffler (76), which is essentially arranged in the heater housing (12), is associated with the combustion air blower (46).

Abstract: A compressor unit includes a compressor, an electric motor which is lined with the compressor along the horizontal direction and drives the compressor, and a sound shielding member which reduces noise generated by the compressor. The sound shielding member has a shape of surrounding the compressor on a first side, a second side and a third side of the compressor and exposing the electric motor, the first and second sides being in a depth direction perpendicular to a lined direction in which the compressor and the electric motor are lined, and the third side being opposite to another side of the compressor where the electric motor is located in the lined direction.

Abstract: Provided is a garment processing apparatus for compactly optimizing the arrangement space of a heat pump system. A heat pump module is modularized by integrally mounting a compressor, a condenser, and an evaporator in an integrated housing and is disposed at an upper portion of a tub.

Abstract: A cylinder coupling structure of a compact air compressor includes a block provided with a suction valve and a discharge valve to be integrally formed with a suction muffler and a discharge muffler to block a front end of the cylinder, a tubular-shaped cylinder coupled to the block, a valve cover covering the valve assembly, at least one pressurized bolt coupling the valve cover and the block, a piston reciprocating inside the cylinder, a stator coupled to the block, a rotator located to rotate relatively with respect to the stator, a crank axis coupled to the rotator to rotate integrally with the rotator to be rotatable coaxially with the block, and a connecting rod, each of both ends thereof being connected to the crank axis and the piston, respectively.

Abstract: A work vehicle has a chassis, and a member connected to the chassis for movement with respect to the chassis. An actuator is connected to the chassis and to the member to move the member with respect to the chassis. A hydraulic circuit is connected to the actuator and a pump pressurizes fluid in the hydraulic circuit. An adjustable quarter wave tuner is connected to the hydraulic circuit. The adjustable quarter wave tuner has a length that is adjustable within a range of lengths to thereby reduce noise caused by the pump across a corresponding range of frequencies. In some embodiments, the member is a linear actuator, such as a hydraulic cylinder. In other embodiments, the member is a rotary actuator, such as a hydraulic motor.

Abstract: Provided is a package-type compressor that can improve cooling performance for cooling a body unit and a control panel. The package-type compressor includes: a cooling fan accommodated in a fan duct to induce a flow of cooling air taken in through inlets and discharged through an outlet; a machine chamber that causes the cooling air taken in at the inlet to flow along a body unit; and a cooling duct that causes the cooling air taken in at the inlet to flow along the control panel. A center position of the suction port of the fan duct is offset away from the inlet and toward the inlet with respect to a center position of a drive shaft of a motor of the body unit.

Abstract: An accumulator to separates gas refrigerant and liquid refrigerant. The accumulator includes a casing, and a resonance-suppressing member installed in an internal space of the casing. The casing has a cylinder portion having a cylinder axis extending along a vertical direction, an upper lid portion linked with an upper end of the cylinder portion, and a lower lid portion linked with a lower end of the cylinder portion. The resonance-suppressing member is installed at a height position that, in a case in which a standing wave of pressure having a first antinode, a node, and a second antinode from the upper lid portion toward the lower lid portion is generated in the internal space, is near a height position of at least one of the first antinode and the second antinode.

Abstract: A linear compressor includes a frame including a frame body, a frame head that extends from a front end of the frame body, a flange groove defined in the frame head, and a body hole that passes through the frame body; a cylinder including a cylinder body inserted into the body hole, a cylinder flange, and a cylinder head provided on a front end of the cylinder flange; and a lock ring press-fitted to be coupled to the flange groove and provided in a space defined between the cylinder head and an inner circumferential surface of the flange groove.

Abstract: A noise mitigation boot that can be installed on or integrated into a miniature diaphragm pump to reduce the overall noise and improve sound quality during operation. The diaphragm pump includes a housing having first and second ports and an interior chamber, a pumping diaphragm disposed in the interior chamber and dividing the interior chamber into a pumping chamber and a backside chamber, a motor for reciprocating the pumping diaphragm for pumping air into and out of the pumping chamber, and flow passages connecting the pumping chamber to the first and second ports. The first port is configured for attachment to a flow line and the second port opens to an exterior surface of the housing. The noise mitigation boot has a muffler wall overlying the exterior surface of the housing. The muffler wall has formed therein a passage extending from the second port to the backside chamber for effecting fluid communication between the second port and the backside chamber.

Abstract: A linear compressor is provided that may include a shell having a cylindrical shape, a compressor main body inserted into the shell, a first shell cover coupled to a rear end of the shell, a first support coupled to a front end of the compressor main body that supports the front end of the compressor main body, and a second support that couples a rear end of the compressor main body to the first shell cover and supports the rear end of the compressor main body. The first support may include a support head coupled to a center of the front end of the compressor main body, and a pair of dampers having both ends respectively coupled to the support head and an inner circumferential surface of the shell.

Abstract: A screw compressor comprising a compressor element with a housing in which two helical rotors are mounted on bearings by their shafts, and a gearbox—with a housing with a mounting surface that is built onto a mounting surface of the housing of the compressor element, and which is coupled in a torque-transmitting way to a shaft of at least one of the aforementioned rotors, whereby the compressor element is provided with an oil circuit with an input and an output for oil and a cooling jacket with an input and output for a coolant, wherein the aforementioned inputs and outputs for the oil and for the coolant are located in the aforementioned mounting surface of the housing of the compressor element, whereby these inputs and outputs connect to channels for the respective supply and removal of the oil and the coolant.

Abstract: A scroll compressor is provided that may include a casing that contains oil in a lower space thereof; a drive motor provided at a position spaced from an upper end of the casing by a predetermined gap, such that an upper space is formed in the casing; a rotational shaft coupled to a rotor of the drive motor, and having an oil supply passage to guide the oil contained in the casing to an upper side of the drive motor; a frame provided below the drive motor; a fixed scroll provided below the frame, and having a fixed wrap; an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber by being engaged with the fixed wrap, and a rotational shaft coupling portion to couple the rotational shaft to the orbiting scroll in a penetrating manner; and an oil collection unit including an oil separator provided at the upper space of the casing, and an oil guide having a first end that communicates with the oil separator and a second end that communicates wit

Abstract: A hermetic compressor includes, inside hermetic container (1), electric motor element (2), compression element (3) driven by electric motor element (2), and lubricating oil (7) for lubricating compression element (3). The hermetic compressor further includes vibration damping member (16) having one part fixed to hermetic container (1) and another part being free end part (18). Structurally, a natural frequency of vibration damping member (16) is in substantial conformity with a natural frequency of hermetic container (1).

Abstract: A hydraulic drive device includes a running surface having a pair of arcuate kidney ports formed thereon. The running surface also includes a plurality of pressure gradient grooves formed on the running surface, each pressure gradient groove having a proximal end adjacent to a respective one of the ends of one of the kidney ports and a distal end. The distal end of one of the pressure gradient grooves associated with one kidney port may overlap the distal end of a pressure gradient groove associated with the other kidney port. The distal end of at least one of the pressure gradient grooves is located outside the circumference of a pitch circle that passes through the center of each kidney port. The distal end of at least one of the other pressure gradient grooves is located inside the pitch circle circumference.

Abstract: An electronics for active cancellation of a pulsating flow with a flow signal noise reference. The electronics includes a signal processor configured to receive a flow signal from a flow sensor that is configured to measure a flow rate of the pulsating flow, generate a flow rate signal and a noise reference signal from the flow signal, and generate a cancelling signal from the noise reference signal. The electronics also includes a controller coupled to the signal processor and configured to determine a flow rate control signal. The electronics includes a signal generator communicatively coupled to the signal processor and the controller and configured to receive the flow rate control signal, generate a valve signal based on the flow rate control signal and the cancelling signal, and provide the valve signal to a valve to control flow rate and attenuate pulses of the pulsating flow of the fluid.

Abstract: Acoustic attenuating device for compressors which includes a hollow body having at least one input port, at least one output channel, at least one output port disposed in the at least one output channel, an intermediate body dividing the hollow body into two acoustic chambers, and a connection channel communicating the two acoustic chambers. Said connection channel includes two sub-channels, wherein one of the two sub-channels accommodates, at least partially, the output channel and the other one of the two sub-channels conforms fluid communication between the two acoustic chambers. The acoustic attenuating device further includes at least one blocker disposed between the outer side of the output channel and the inner side of the sub-channel which accommodates the output channel, wherein said blocker is capable of precluding flow between the two acoustic chambers, thereby reducing the amount of lubricating oil which flows out from the compressor into the cooling system.

Abstract: A hydraulic device 1 comprises a first member 2 movable relative to a second member 5. In such a device the risk of cavitation noise and cavitation damage should be minimized. To this end said first member 2 having a pressure chamber 3 opening in a face 7 of said first member 2 which face 7 is in contact with a contact face 6 of said second member 5, said second member 5 having a low pressure area 9, wherein a throttling flow path is provided in a groove 11 connecting said pressure chamber 3 and said low pressure area 9 when pressure chamber 3 is approaching said low pressure area 9, characterized in that a throttling resistance of said groove 11 increases in a direction of the flow through said groove 11.

Abstract: An elongated non-metal, corrosion resistant compressor mounting base plate structure useful for an appliance such as a refrigerator unit including (I) a base plate having a top surface and a bottom surface, wherein the base plate is adapted for receiving a compressor on the top surface of the base plate; (II) a means for receiving and removably affixing a compressor to the top surface of the base plate; and (III) a reinforcement means integral with said base plate; wherein said reinforcement means includes, for example, at least two elongated transverse tubular reinforcement segments integral with the base plate segment, one transverse tubular reinforcement segment at each of the transverse ends of the base plate segment; said reinforcement means being adapted for providing the base plate with sufficient strength and rigidity such that the base plate can withstand the deformation load from the weight of the compressor.

Abstract: A blower assembly including a motor, an impeller and a volute that is configured such that an inlet chamber of the volute and an outlet chamber of the volute are divided from one another by an airtight membrane and the membrane is configured to allow the transmission of pressure waves between the inlet and outlet chambers.

Abstract: A mounting arrangement secures a refrigerator compressor to a support base member through a plurality of elastomeric mounts secured on pin elements with retainers. The mounts include head portions which extend through openings provided in an elongated plate fixed to the compressor. The mounts are specifically formed with a rounded bottom to pre-load the mounting arrangement and prevent vibration transmission through cores of the mounts. In addition, each mount includes a plurality of vertically spaced rings which provide shock protection against a large impact force by deflecting and potentially contacting each other, while normal vertical isolation occurs by deflection of an uppermost one of the rings. The mounts are formed with various undercuts which allow the mounts to be optimized for the mass and operational frequency of the compressor.

Abstract: A diaphragm pump includes an inflow chamber and an outflow chamber. The inflow chamber is provided with an inflow valve seat. An inflow valve that prevents backflow of a liquid is disposed against the inflow valve seat. The outflow chamber is provided with an outflow valve seat. An outflow valve that prevents backflow of a liquid is disposed against the outflow valve seat. The diaphragm pump also includes an inflow-valve presser that presses the inflow valve against the inflow valve seat, and an outflow-valve presser that presses the outflow valve against the outflow valve seat. Each of the inflow valve and the outflow valve is defined by an elastically deformable member. Each of the inflow valve seat and the outflow valve seat includes a surface at least a portion of which is a curved surface.

Abstract: In order to supply a refrigerant to multiple-stage heat receivers equally while saving space, a refrigerant distribution device to distribute a refrigerant supplied from the upper stream according to the present invention includes a main body including a side wall part, an upper face part and a bottom face part, an upstream pipe provided on the upper face part in a manner communicating with an inside of the main body, a downstream pipe provided in a state partially inserted inside the main body via an under face hole part provided in the bottom face part, a tributary pipe provided in the side wall part or the bottom face part in a manner communicating with the inside of the main body, and a refrigerant direction changing means provided between the upstream pipe and the downstream pipe.

Abstract: A reciprocating compressor is provided. The reciprocating compressor may include a cylinder having a compression space, a piston inserted into the cylinder to define the compression space while being reciprocated, the piston having a suction passage to communicate with the compression space, a gas bearing having at least one bearing hole that passes through the cylinder, so that a refrigerant gas may be injected between the cylinder and the piston to support the piston with respect to the cylinder, and a flow resister disposed at an outer circumferential surface of the cylinder or at one side of the cylinder to restrict a flow of the refrigerant gas flowing through or toward the at least one bearing hole.

Abstract: A cylinder block (1) for a compressor has a central opening (3) for accommodating a drive shaft of a drive unit and defines a central axis of the cylinder block (1) with a plurality of cylinder bores (2) arranged around the central opening and each of the cylinder bores (2) adapted for accommodating a piston (14).The cylinder block (1) also has at least one stop (10) on a drive side of the cylinder block (1) with the stop (10) arranged within a triangular area which is delimited by the central opening (3) and the two adjacent cylinder bores (2).

Abstract: A sealed compressor of the present invention comprises an electric component (111); a compression component (113) actuated by the electric component (111); and a sealed container (101) which accommodates therein the electric component (111) and the compression component (113), and stores lubricating oil therein; wherein the compression component (113) includes a crankshaft (135) including a main shaft (137) and an eccentric shaft (139); a cylinder block (117) including a bearing unit (123) supporting the main shaft (137) such that the main shaft is rotatable, and a cylinder (121) defining a compression chamber (119); and a suction muffler (131) through which a refrigerant gas (115) flows from an interior of the sealed container (101) to an interior of the compression chamber (119); a separating wall (165) is provided between the suction muffler (131) and the electric component (111); a first space (159) is formed between the suction muffler (131) and the separating wall (165); and a second space (163) is form

Abstract: A compressor includes compression and drive mechanisms disposed in a casing having a cylindrical member. The compression mechanism includes a cylinder main body, an end surface member attached to the cylinder main body, a muffler main body attached to the end surface member, an intake hole communicating with the compression chamber and extending in a direction crossing the drive shaft, and a circular hole located radially outside the compression chamber and extending in a direction parallel to the drive shaft. The circular hole opens to a space inside the casing. At least a part of the circular hole is located within an area defined by extending the intake hole in a plan view. A method of producing a compressor includes inserting a positioning pin into the circular hole of the compression mechanism and pressing an inlet tube into the intake hole from outside of the cylindrical member.

Abstract: Provided is a gasket (30), which is used in a motor-driven compressor including an inverter housing, including a flat core of metal (31) and an elastic foamed material (32) so disposed as to cover both surfaces of the core (31), and the gasket (30) has embossed recesses and projections (33) with predetermined shapes. It is possible to enhance sealing performance to seal the inverter housing by using this gasket (30). A motor-driven compressor using this gasket (30) enhances vibration prevention.

Abstract: A gas processing device includes a sample inlet defining a gas flow path into a housing, and a pump and a noise dampening device disposed in the housing. The noise dampening device includes an inlet chamber, an outlet chamber, and an elastomeric membrane interposed between and fluidly isolating the inlet chamber and the outlet chamber. The inlet chamber is interposed between the sample inlet and the pump inlet, and the outlet chamber communicates with the pump outlet.

Abstract: A sleeping system is provided, including an air bladder and a diaphragm pump. The diaphragm pump communicates with the air bladder. The diaphragm pump includes a base, a first inlet, a first outlet, a first noise-eliminating foam, a pump body and a cover. The first inlet is formed on the base. The first outlet is formed on the base. The first noise-eliminating foam is disposed in the base. The cover is connected to the base and covers the pump body, wherein air flow passes through the first inlet into the base and travels through the pump body and the first noise-eliminating foam, and leaves the diaphragm pump through the first outlet to be infused into the air bladder.

Abstract: A mounting member for a hydraulic pump or other rotating kit for a hydraulic drive device includes a running surface having a pair of arcuate kidney ports formed thereon. The running surface also includes a plurality of pressure gradient grooves formed on the running surface, each pressure gradient groove having a proximal end adjacent to a respective one of the ends of one of the kidney ports and a distal end. The distal end of one of the pressure gradient grooves associated with one kidney port may overlap the distal end of a pressure gradient groove associated with the other kidney port. The distal end of at least one of the pressure gradient grooves is located outside the circumference of a pitch circle that passes through the center of each of the kidney ports. The distal end of at least one of the other pressure gradient grooves is located inside the circumference of the pitch circle.

Abstract: A valve assembly may include a valve plate having an inlet hole through which working fluid passes from a vacuum muffler, a first discharge hole through which working fluid discharged from a cylinder passes, a second discharge hole through which the working fluid from the first discharge hole passes, and a pulsation and/or noise reducing passage through which the working fluid from the second discharge hole flows; a discharge valve at or in the valve plate configured to open and/or close the first discharge hole; a valve sheet having a first hole therein communicating with the first discharge hole and a second hole therein at an outlet of the pulsation and/or noise reducing passage; and a vacuum valve in the valve sheet configured to open and/or close the inlet hole.

Abstract: A motor having an improved structure that prevents infiltration of moisture into the motor and a washing machine having the same. A washing machine includes a body, a tub disposed in the body, a drum rotatably disposed in the tub, and a motor including a stator coupled to a rear surface of the tub and a rotor rotatably disposed inside the stator. The stator includes a stator core, a first insulator and a second insulator to cover both ends of the stator core, and at least one moisture infiltration prevention member disposed between the first insulator and the second insulator to prevent infiltration of moisture into the stator core.

Abstract: A dual fuel system for an engine is disclosed. The dual fuel system may have a first fuel supply providing a first fuel to the engine, and a second fuel supply providing a second fuel. The dual fuel system may also have a regulator configured to pass the second fuel from the second fuel supply to the engine, with the regulator also in fluid communication with the first fuel supply. The dual fuel system may further have a damper in fluid communication with the first fuel supply and an output of the regulator.

Abstract: A compressor has a housing which includes a compression mechanism for compressing and then discharging sucked air, and an intercooler core for cooling the discharged air and mitigating a pressure fluctuation thereof. The housing has a cylinder block integrally formed so as to include a rotor chamber which accommodates the compression mechanism, a silencing and cooling chamber which accommodates the intercooler core, and a discharge hole which provides communication between the rotor chamber and the silencing and cooling chamber.

Abstract: The present invention refers to a noise muffler for refrigeration compressors capable of dampening noise generated by the intermittent flow of the compressor and at the same time a muffler that reduces the loss of load in the refrigeration system.

Abstract: The present invention refers to an acoustic filter for reciprocating compressor and, in special, a suction acoustic filter containing at least one inlet pipeline (21), at least one outlet pipeline (22), and at least one intermediate pipeline (42). Said acoustic filter (1) comprises at least two horizontal chambers (5, 6), wherein said chambers are interconnected by an intermediate pipeline (42), which has a superior portion (421) with a length that is equivalent to approximately 75% to 98% of the height of the first horizontal chamber (5) and an inferior portion (422) with a length that is equivalent to approximately 45% to 80% of the height of the second horizontal chamber (6).

Abstract: Acoustic insulation comprising tuned resonant absorbers to absorb sound energy and prevent it from being emitted and a method of installation of the acoustic insulation. The acoustic insulation is preferably placed or sprayed by a thermal spray process. The resonant absorbers are strategically placed in the placed or thermally sprayed material to maximize sound absorption. Discrete mass absorbers may be sealed or left open.