A screw compressor 2 includes a compressor main body 4, a motor 8, and a gearbox 10. The compressor main body 4 includes screw rotors 5c, 5d, 6c, and 6d, rotor casings 5e and 6e accommodating therein the screw rotors 5c, 5d, 6c, and 6d, and main body casings 5a and 6a accommodating therein the rotor casings 5e and 6e, the main body casings being provided with first flanges 5b and 6b on respective ends thereof. The motor 8 drives the screw rotors 5c, 5d, 6c, and 6d via gears 10f and 10g. The gearbox 10 has an attachment surface Son which the first flange 6b to the main body casings 5a and 6a is attached, accommodates therein the gears 10f and 10g, and has a substantially rectangular shape. In a state where the compressor main body 4 is attached to the gearbox 10, a part of the first flange 6b extends to an outside of the attachment surface S, and projection regions of the rotor casings 5e and 6e onto the attachment surface S exist within the attachment surface S. In this way, vibrations of the screw compressor 2 can be reduced.

Embodiments of vibration damping clips for use within a climate control system are disclosed. In an embodiment, a vibration damping clip is engaged with three fluid lines of an outdoor unit of the climate control system, such as, for instance, a suction line of a compressor of the climate control system, a discharge line of the compressor, and a fluid line coupled to a pressure equalization valve (PEV) within the outdoor unit.

A positive displacement compressor includes a positive displacement compressor rotor; a shaft operative to support the positive displacement compressor rotor; a bearing operative to support the shaft; a first structure having a first squeeze film compression surface; and a second structure having a second squeeze film compression surface spaced apart radially from the first squeeze film compression surface. The first and second structures are constructed to jointly form a squeeze film damper using the first and second squeeze film compression surfaces. The squeeze film damper is operative to provide squeeze film damping of vibrations. An annular oil discharge groove is disposed adjacent to a first end of the squeeze film damper. A first o-ring gland houses a circumferential-sealing o-ring disposed proximate to the first end of the squeeze film damper. A second o-ring gland houses a second circumferential-sealing o-ring disposed proximate to a second end of the squeeze film damper.

Disclosed is a housing structure including: a housing, a bottom of the housing being provided with a plurality of supporting feet; a supporting component disposed in the housing and configured to support a motor and a rotor of a compressor; and a connecting component, one end of the connecting component being connected to the supporting component, another end of the connecting component being connected to the housing, and a joint of the connecting component with the housing being away from the supporting feet. An air-conditioning unit and a compressor thereof are also provided. In the structure, vibration passes through a transmission path in the housing before reaching the supporting feet, reducing excessive compressor vibration. The transmission path of the vibration in the housing is extended, thereby reducing the vibration transmitted to a whole machine of the air-conditioning unit during operation, ensuring operational reliability of the whole machine.

A compressor may include a shell. A compression mechanism may be disposed within the shell. A drive shaft may be disposed within the shell and drivingly engaged with the compression mechanism. A motor assembly may be drivingly engaged with the drive shaft and may include a rotor and a stator. A plurality of magnets may be disposed within the rotor and may cooperate with the stator to create an electromagnetic field between the rotor and the stator. A counterweight assembly may be secured to the drive shaft and configured to dynamically balance the compression mechanism and secure the plurality of magnets within the rotor.

The screw compressor includes a first-stage compressor main body and a second-stage compressor main body for compressing fluid with screw rotors, a motor for driving the first-stage compressor main body and the second-stage compressor main body, and a gear box. The gear box is connected to the first-stage compressor main body, the second-stage compressor main body, and the motor; transmits a driving force of the motor to the screw rotors, and includes a first attachment hole for attaching the first-stage compressor main body and a second attachment hole for attaching the second-stage compressor main body; and is provided with an annular rib surrounding both of the first attachment hole and the second attachment hole. In the screw compressor, the vibration of the natural vibration mode which is most burdensome and should be reduced can be efficiently reduced.

A silencer for vacuum pumps which allows only for unidirectional flow and which reduces the noises caused by the air discharged at the exhaust of said pump. The silencer features baffles to divert and disrupt the flow and an umbrella check valve to ensure the unidirectionality of the discharge flow.

Disclosed herein is a rotary compressor capable of maintaining the overall dynamic balance and providing low vibration and low noise even at high speed operation and capable of improving efficiency by providing a communication passage to communicate operation chambers, which are provided inside each of the plurality of cylinders for compressing a refrigerant, to each other. The rotary-type compressor includes a housing, a drive motor provided inside the housing to generate power and having a stator and a rotor, and a compression unit that receives power from the drive motor and compresses the refrigerant. The compression unit includes a plurality of cylinders in which an operation chamber to compress the refrigerant is provided. The operation chambers provided in each of the plurality of cylinders are provided to have different volumes, and a balancer provided to maintain dynamic balance is provided only in the lower side of the rotor.

According to one embodiment, a horizontal compressor comprises a container accommodating a compression mechanism unit and an electric motor unit, a first leg fixed to the container near the motor unit, a second leg fixed to an end of the container on the compression mechanism unit side, an accumulator between the legs, and a joint port in the container. The second leg includes a first support portion supporting the container in a horizontal attitude, and a second support portion supporting the container standing in a vertical attitude. The first support portion extends in a direction away from the joint port relative to the second support portion.

A motor for driving a fan in a heating and/or cooling system includes a motor body, a motor cover, and an isolator. The isolator damps vibrations passed from the motor body to the motor cover. The isolator includes two isolating elements connected by a bridge. At least one of the two isolating elements includes at least two corners in a cross-sectional view.