A cooling device with a novel compressor includes a cylinder, a connector, a working gas line, a cryocooler, a piston, a drive device and a compressor element. The connector is disposed at the end of the cylinder. The working gas line connects the connector to the cryocooler. The piston is movable back and forth inside the cylinder. A transfer space exists inside the cylinder between the piston and the end of the cylinder. A portion of the transfer space contains a transfer fluid. The drive device is adapted to move the piston back and forth inside the cylinder. The compressor element is disposed inside the transfer space. A working space that contains a working gas exists inside the compressor element. The working gas contained in the working space inside the compressor element is periodically compressed by the transfer fluid as the piston periodically moves back and forth inside the cylinder.

A sealed compressor includes sealed container that contains electric element, and compression element driven by electric element. Compression element includes shaft that includes main shaft portion, and eccentric shaft portion integrally movable with main shaft portion, and bearing portion that supports main shaft portion of shaft to constitute a cantilever bearing. Compression element further includes cylinder that compresses gas, piston reciprocatively inserted into cylinder, and connecting rod that connects eccentric shaft portion with piston.

In a sealed compressor, electrically-operated element (104) and compressive element (106) driven by electrically-operated element (104) are housed in the inside of sealed container (102). Compressive element (106) includes shaft (126) formed of main shaft (136) and eccentric shaft (134), and cylinder block (128) having; bearing (144) which pivotally supports main shaft (136) of shaft (126); and cylinder (142). Further, the compressive element (106) includes piston (130) which is movable in the cylinder (142) in a reciprocating manner, and connecting portion (132) which connects eccentric shaft (134) and piston (130) to each other. Electrically-operated element (104) is formed of an outer-rotor-type motor which includes stator (150), and rotor (152) which is disposed coaxially with stator (150) so as to surround an outer periphery of stator (150). Further, non-sliding portion (146) is provided between main shaft (136) and bearing (144), and stator (150) is fixed to outer peripheral portion (162) of bearing (144) which corresponds to non-sliding portion (146).

This chiller control device (74) is provided with: a storage unit (18) which stores operation data detected at each site in a turbo chiller; a compression unit (34) which, when the size of the operation data accumulated over time in the storage unit (18) becomes too large, converts the operation data each time a condition depending on the type of operation data is met, thereby compressing the data size; and a diagnostic unit (36) which evaluates the state of the turbo chiller on the basis of the operation data converted by the compression unit (34). By this means, the state of the chiller can be diagnosed without increasing the storage capacity of the storage medium that stores operation data of the turbo chiller.

A compressor includes: a cylinder in which a piston is accommodated, the cylinder defining a compression space that is configured, based on the piston reciprocating in an axial direction, to compress a refrigerant gas therein, and a frame configured to accommodate the cylinder therein and defining a gas hole configured to pass the refrigerant gas therethrough. The gas hole is configured to communicate with an outside of the frame to receive the refrigerant gas and communicate with a gas pocket that is defined between an inner circumferential surface of the frame and an outer circumferential surface of the cylinder. The outer circumferential surface of the cylinder or the inner circumferential surface of the frame provides a plurality of restrictor regions partitioned by a gas supply passage, the gas supply passage defined to be recessed at the cylinder and configured to communicate with the gas hole.

A reciprocating compressor is provided. The reciprocating compressor according to an aspect of the present disclosure comprises a case, a drive motor disposed in the case, a rotating shaft rotatably connected to the drive motor, a compression mechanism configured to compress a refrigerant by the rotating shaft, a plurality of support members configured to support the compression mechanism, and a plurality of elastic assemblies, each of which is disposed between each of the plurality of support members and the case. In this case, the elastic assembly includes a first mounting member disposed between the support member and the case, a first elastic member disposed between the support member and the first mounting member, and a second elastic member disposed between the first mounting member and the case. Through this, the present disclosure can reduce a vertical vibration compared to using a single spring.

A piston compressor and a portable refrigerator. The portable refrigerator comprises a piston compressor, the piston compressor comprising a cylinder head, a cylinder head gasket, a valve plate, an intake valve, a valve gasket and a crankcase, wherein the cylinder head comprises a cylinder head high-pressure chamber and a cylinder head discharge hole, the crankcase comprises a crankcase high-pressure chamber and a crankcase discharge hole corresponding to the cylinder head discharge hole, and the piston compressor is provided with a plurality of gas discharge paths for discharging gas that enters the cylinder head high-pressure chamber, the plurality of gas discharge paths comprising: a gas discharge path, along which the gas leaves the cylinder head high-pressure chamber, passes through a gas guide hole in the cylinder head gasket, a gas guide hole in the valve plate, a gas guide hole in the intake valve and a gas guide hole in the valve gasket in sequence to a crankcase channel to enter the crankcase high-pressure chamber, then enters the crankcase discharge hole through a crankcase discharge channel, and is discharged through the cylinder head discharge hole; and at least one further gas discharge path, along which the gas leaves the cylinder head high-pressure chamber and returns to be discharged through the cylinder head discharge hole.

A driving unit and a linear compressor including the same are provided. The driving unit includes an inner stator, a bobbin surrounding the inner stator in a circumferential direction, a coil wound on the bobbin, a plurality of stator cores surrounding the bobbin and spaced apart from each other in the circumferential direction, and a plurality of permanent magnets disposed between the inner stator and the plurality of stator cores. A cross section of the bobbin may include a pair of straight portions facing each other and a curved portion connecting the pair of straight portions.

An electric motor and a compressor having an electric motor. The electric motor may include a stator, and a rotor provided with a rotational shaft, a rotor core coupled to the rotational shaft, and permanent magnets coupled to the rotor core. The rotor core may include a first core to which the permanent magnets may be coupled, and a second core made of a magnetic material and coupled to an end of the first core in an axial direction. The second core may have outer surfaces disposed inside of extension lines extending in the axial direction from inner surfaces of the permanent magnets.

A linear compressor may include a driving coil, a mover, a piston, and a coupling. The mover may be positioned adjacent the driving coil. The driving coil may be operable to reciprocate the mover relative to the driving coil. The piston may have a piston head and a cylindrical side wall. The inner surface of the cylindrical side wall may define a ball seat. The coupling may extend between the mover and the piston. The coupling may include a flex mount and a ball nose.