An air compressor comprises a compressor that compresses introduced air and a tank that stores the compressed air generated by the compressor. The air compressor also comprises a discharge pipe from which the compressed air and a condensate in the tank are discharged to an outside of the tank. The air compressor also comprises a drain cock that is disposed in a passage of the discharge pipe and serves to open and close the discharge pipe. The air compressor also comprises a discharge pipe end portion that includes a discharge port facing upward at a tip end of the discharge pipe. The air compressor also comprises a tubular cover including a top portion that covers the discharge pipe end portion from above.

The present disclosure relates to a dryer. The dryer of the present disclosure includes a cabinet forming an exterior, a drum rotatably installed inside the cabinet, a heat pump module including an evaporator, a compressor, a condenser, and an expander through which a refrigerant circulates to supply hot and dry air into the drum, a compressor chamber housing configured to reduce noise generated by the compressor and form a compressor chamber which is a space through which air flows around an outer periphery of the compressor, and a cooling fan configured to cause air to flow into the compressor chamber.

An electric compressor includes a compression part, an electric motor, an inverter, a housing that has an outer circumferential surface, and a soundproof cover that covers the outer circumferential surface of the housing. The soundproof cover has a covering portion that covers the outer circumferential surface of the housing and an overlapping portion that overlaps the covering portion in a radial direction of the housing. The overlapping portion and the covering portion each have an insertion hole. The housing is provided with a shaft that extends from the outer circumferential surface of the housing and that is inserted into the insertion hole, and a pressing part that presses a part of the overlapping portion around the insertion hole toward the housing so as to elastically deform the overlapping portion and the covering portion. The soundproof cover is attached to the housing with the shaft and the pressing part.

A method of attenuating pressure pulsations, comprises: pumping liquid into a vessel in fluid communication with a flow line by a conduit sealingly passing through a top surface of the vessel, so as to discharge the liquid into the flow line while creating an air-liquid interface in the vessel, by trapping in an upper part of the vessel air that attenuates pressure pulsations caused by the pumping. The method also comprises generating condition for the liquid to drain out of the vessel to allow air to fill at least the upper portion of the vessel.

Embodiments disclosed herein include a sound attenuating enclosure defining an interior space, formed by a plurality of composite panels. In some embodiments the composite panels include a frame having a plurality of elongate frame members coupled to one another. The frame defines an inner side facing toward the interior space and an outer side facing away from the interior space. Additionally, some embodiments may include an outer skin secured to the outer side of the frame, an inner skin secured to the inner side of the frame, and a foam layer disposed between the outer skin and the inner skin and between at least a pair of the frame members.

A sound-insulating refrigerator vacuum assembly, comprising a sealed box receiving a vacuum pump, the sealed box body comprises an upper sealing body and a lower sealing body, the upper sealing body and the lower sealing body can be snap-fitted to define a receiving cavity, and the vacuum pump is placed in the receiving cavity; the vacuum assembly further comprises an air pipe member, the air pipe member comprises an air inlet pipe, an air outlet pipe and a base plate that are integrally formed, and the air inlet pipe and the air outlet pipe are disposed through the base plate; a notch portion is provided in the sealed box, and an outer edge of the base plate matches the notch portion in shape; the vacuum pump is connected with a muffler.

The invention concerns a suction silencer (1) for an encapsulated refrigerant compressor, with an inlet (5), an outlet (6), a damping chamber (7) connecting the inlet (5) and the outlet (6) for sound attenuation, and an equalization chamber connected to the damping chamber (7) for equalizing the pressure of the damping chamber (7), wherein the suction silencer (1) is provided in the operating position for integration in a compressor housing (20) of the refrigerant compressor having a bottom area (21) for reception of an oil sump (26). To ensure a continuous pressure equalization between the damping chamber (7) and the environment even during start-up of the refrigerant compressor, it is intended in accordance with the invention that the equalization chamber is designed as a first equalization chamber (11) with a first opening (9) for pressure equalization and the suction silencer (1) has a further, second equalization chamber (14) with a second opening (10) for pressure equalization.

A compressor cover includes a side cover that surrounds a side peripheral surface of a compressor and a top cover provided above the compressor to cover along with the side cover, the compressor. The top cover has a first slope that extends such that an outer peripheral portion of the top cover is located lower than a central portion of the top cover.

A compressor includes a compression mechanism to compress gas and discharge compressed gas, an electric motor to drive the compression mechanism, a casing housing the compression mechanism and the electric motor, a suction pipe connected to a suction side of the compression mechanism via the casing, and a discharge pipe provided at the casing to open in a space in the casing. The space has a first space located below the motor, and a second space located above the motor. The compression mechanism is disposed in the first space. The compressor is provided with a partition plate disposed in the second space, and the having a gas passage hole. The partition plate further has an oil drain hole formed at a lower level than an open end of the gas passage hole, and located radially outside an outer peripheral surface of a rotor of the electric motor.

A muffler comprising a hollow cavity enclosed by a first bottom surface, a second bottom surface and a side wall, the side wall connects the first bottom surface with the second bottom surface, an air inlet at one end of the hollow cavity and an air outlet at the other end of the hollow cavity; the cavity is divided into a plurality of chambers in an axial direction, the chambers comprise a first chamber adjacent to the first bottom surface, a second chamber adjacent to the second bottom surface and an intermediate chamber located between the first chamber and the second chamber, the air inlet is in gas communication with the intermediate chamber, and the air outlet is in gas communication with the first chamber.