Abstract: An asynchronous starting and synchronous reluctance electric motor rotor, an electric motor and a compressor. The asynchronous starting and synchronous reluctance electric motor rotor includes a rotor core. The rotor core includes: a first magnetic barrier structure, with multiple groups of first magnetic barrier portions arranged at interval along a d-axis of the rotor core; and a second magnetic barrier structure, including two communicating magnetic barrier slots arranged at interval along the d-axis, the two communicating magnetic barrier slots being respectively located on two sides of the first magnetic barrier structure, the communicating magnetic barrier slots being arc-shaped slots extending circumferentially along the rotor core, and slot walls of two ends of the arc-shaped slots being arranged parallel to a q-axis.

Abstract: Provided are a method and a system for detecting bend in the rotating shaft of magnetic bearing. The system comprises a first displacement sensor, a second displacement sensor, and a processor electrically connected with the first displacement sensor and the second displacement sensor; the processor comprises a calculating unit, a first judging unit and a second judging unit; the calculating unit is configured to calculate center positions of the rotating shaft stopping at different positions during rotating a circle; the first judging unit judges whether the rotating shaft is bent or not according to a curve of the changed center positions, and outputs a test result of qualification if the rotating shaft is not bent. Users are able to determine whether the rotating shaft needs to be processed or not, to avoid causing destructive effects on the magnetic bearing system due to excessive bend degree of the rotating shaft.

Abstract: The present invention provides a protective structure for a magnetic bearing and a magnetic bearing assembly. The protective structure for a magnetic bearing comprises: a first radial bearing protective component, sleeved on a shaft and in a position corresponding to a magnetic bearing, a first gap being radially formed between the first radial bearing protective component and the shaft; and a second radial bearing protective component, sleeved on the shaft and in a position corresponding to the magnetic bearing, a second gap being radially formed between the second radial bearing protective component and the shaft; the height of a working gap being greater than the height of the second gap, the height of the second gap being greater than the height of the first gap.

Abstract: Provided are a compressor and a refrigeration system having the same. The compressor includes: a housing, a lower flange structure, a first compression cylinder and a second compression cylinder. The first compression cylinder includes a cylinder body, a roller and a sliding vane. A sliding vane groove is provided on an inner wall of the cylinder body. The roller is provided in the cylinder body. The sliding vane is provided in the sliding vane groove and matched with the roller. A first reset member is provided between the sliding vane and the sliding vane groove. A lock groove in positional correspondence to a pin groove is provided on the sliding vane. A first cavity is formed between the sliding vane and the sliding vane groove. A second cavity is formed between a pin and the sliding vane. A third cavity is formed between the pin and the pin groove.

Abstract: A magnetic levitation bearing, a magnetic levitation rotor support assembly, and a compressor. The magnetic levitation bearing is used for supporting a rotor by interacting with a thrust disc on the rotor, and comprises: a radial stator core having an annular structure, which is disposed on a radial outer side of the thrust disc and corresponds to the thrust disc in an axial direction of the rotor, the radial stator core and the thrust disc being separated by a first radial gap X1; and a radial control coil, which is disposed on the radial stator core and can generate a radial electromagnetic force to the thrust disc in a radial direction of the rotor.

Abstract: Disclosed are a compressor, an air conditioner and a method for assembling a compressor, wherein the compressor includes a housing, a first cylinder assembly and a second cylinder assembly. The first cylinder assembly includes a first cylinder. The first cylinder assembly has a first discharge channel. A first end of the first discharge channel is in communication with the first cylinder, a second end of the first discharge channel is in communication with a receiving chamber. The second cylinder assembly includes a second cylinder; the second cylinder is disposed adjacent to the first cylinder. The second cylinder assembly has a second discharge channel which is disposed relatively independent of the first discharge channel. A first end of the second discharge channel is connected to the second cylinder; a second end of the second discharge channel is in communication with a receiving chamber.

Abstract: An axial magnetic bearing includes a bearing body and a protective device. The bearing body includes a stator and a rotor. The protective device includes a first assembly fixedly mounted relative to the stator and a second assembly fixedly mounted relative to the rotor. One of the first assembly and the second assembly includes a first stopping portion, and the other of the first assembly and the second assembly includes a second stopping portion and a third stopping portion. A part of the first stopping portion is axially located between the second stopping portion and the third stopping portion. A protection gap of the protective device is smaller than a working gap of the bearing body.

Abstract: A tangential motor, a tangential motor rotor and a rotor core thereof are provided. The rotor core includes a rotor body and magnetic steel grooves provided on the rotor body 2N magnetic isolation holes are provided in a rotor magnetic pole between every two adjacent magnetic steel grooves. The 2N magnetic isolation holes are symmetrically provided at two sides of a magnetic pole center line of the rotor magnetic pole. A width of each of the magnetic isolation holes increases from a circle center of the rotor body to an outer side of the rotor body. Outer side hole surfaces, close to the outer side of the rotor body, of the magnetic isolation holes are arc-shaped surfaces which are concentrically arranged with the rotor body. The rotor core is able to reduce the vibration noise of the motor and increase the efficiency of the motor.

Abstract: The present disclosure provides a compressor and an air conditioner having the same. The compressor includes: a main shaft with a convex portion and a slip sheet; a cylinder; and an air inlet and outlet device including a disk body and an air suction port including an outer side, an inner side and a connecting side located between the outer side and the inner side, wherein the outer side is overlapped with an inner wall of the cylinder or is located on the inner side of the inner wall of the cylinder, the inner side is overlapped with an outer wall of the convex portion or is located on the outer side of the convex portion, and the connecting side is overlapped with a side wall of the slip sheet or is located on the inner side of the side wall of the slip sheet.

Abstract: The invention discloses an electric motor and a tangential type permanent magnet rotor. The tangential type permanent magnet rotor includes a rotor iron core (2) and permanent magnets (1) provided on the rotor iron core (2); a width of one side, close to the outer edge of the rotor iron core (2), of each of the permanent magnets (1) is H2; and a width of one side, close to the center of the rotor iron core (2), of each of the permanent magnets (1) is H1, wherein H2>H1. The tangential type permanent magnet rotor enables the width H2 of a permanent magnet part close to the outer edge of the rotor iron core to be larger, and enables the width H1 of a permanent magnet part close to the center of the rotor iron core to be smaller.

Abstract: Disclosed are a compressor and exhaust structure thereof. The exhaust structure includes a cylinder, an upper flange and a lower flange respectively provided on an upper side and a lower side of the cylinder, and a main shaft having a sliding vane mounting portion. The sliding vane mounting portion of the main shaft is provided with at least two sliding vanes. A rotary plate is provided between the sliding vane mounting portion and at least one of the upper flange and the lower flange; the rotary plate is fixedly connected with the main shaft, and provided with exhaust openings and exhaust valves configured to control opening/closing of respective exhaust openings. The exhaust structure of the compressor is capable of avoiding a problem that a valve plate is prone to fatigue damages, while also increasing the operating frequency and a maximum refrigerating capacity of the compressor.

Abstract: An eddy current sensor for a rotary shaft and a rotary shaft apparatus. The eddy current sensor includes: a housing; one or more position detecting probes provided on the housing; and a rotating speed detecting probe provided on the housing. The eddy current sensor integrates the position detecting probe and the rotary speed detecting probe, such that while the eddy current sensor is detecting position displacement of the rotary shaft, the eddy current sensor may also simultaneously detect the rotating speed of the rotary shaft, which facilitates detecting and monitoring the rotary shaft more comprehensively. The detected position data and rotating speed data of the rotary shaft correspond to each other at any time, such that the working state of the rotary shaft may be analyzed more intensively.

Abstract: The invention discloses a compressor. The compressor includes a first primary cylinder, a second primary cylinder and a secondary cylinder, which are stacked, a separator is provided between two adjacent cylinders. The first primary cylinder is provided with a first air entry, the second primary cylinder is provided with a second air entry, and the secondary cylinder is provided with an air outlet. The first primary cylinder and the second primary cylinder are connected in serial to the secondary cylinder after being connected in parallel. A refrigerant entering the first air entry and the second air entry is discharged from the air outlet after primary or/and secondary compression. The two separators are divided into a first separator and a second separator. Any one or two of the first separator, the second separator and a lower flange may be provided with a slide piece control device.

Abstract: A compressor includes two parallel arranged primary cylinders and a secondary cylinder arranged in the downstream of the two primary cylinders. The secondary cylinder includes a cylinder body and a sliding vane. The sliding vane is arranged inside the cylinder body. A locking part is used for locking and unlocking the sliding vane. The locking part is clamped with and separated from the sliding vane. When the sliding vane is in the locking position, the sliding vane is locked in a seal cavity inside the secondary cylinder, and the locking end of the locking part extends to the side at which the secondary cylinder is located. The compressor can be switched between a single-stage mode and a double-stage mode. In the condition of light load, energy efficiency can be improved and the waste of energy sources is avoided. An air conditioning system and compressor control method are also disclosed.

Abstract: A rotary cylinder piston compressor pump is provided, including a rotating shaft (2), a piston (3) and a cylinder (4). A rotating shaft hole (21) is provided in the rotating shaft (2). An oil guiding channel communicated with the rotating shaft hole (21) is provided in the cylinder (4). A recess (45) is formed in the inner end face of the cylinder (4). An oil path sealed relative to a compression cavity of the cylinder (4) is formed between the recess (45) and the piston (3). The oil path is communicated with an oil path between the piston (3) and the rotating shaft (2) and is communicated with the oil guiding channel by means of an oil returning channel. Also provided is a compressor including the compressor pump.

Abstract: Disclosed is a rotating cylinder enthalpy-adding piston compressor. The compressor is a two-stage rotating cylinder piston compressor, including a first-stage rotating gas cylinder, a first gas cylinder liner, a first piston, and a second-stage rotating gas cylinder, a second gas cylinder liner, and a second piston, and further including an enthalpy-adding assembly connected between the first-stage rotating gas cylinder and the second-stage rotating gas cylinder for supplying gas and adding enthalpy between the two stages of rotating cylinders.

Abstract: A compressor pump structure has a cylinder sleeve provided between an upper flange and a lower flange; a cylinder is provided inside the cylinder sleeve; a piston is slidably arranged inside the cylinder; a volume-variable chamber is formed among the cylinder sleeve, the cylinder and the piston; a rotating shaft passes through the piston, the axis of the rotating shaft being eccentrically disposed with respect to the axis of the cylinder with a fixed eccentricity; the rotating shaft drives the piston and the cylinder to rotate; and the piston slides within the cylinder while rotating so as to change the volume of the volume-variable chamber. Further disclosed is a compressor which comprises a compressor pump structure.

Abstract: The present invention provides a protective structure for a magnetic bearing and a magnetic bearing assembly. The protective structure for a magnetic bearing comprises: a first radial bearing protective component, sleeved on a shaft and in a position corresponding to a magnetic bearing, a first gap being radially formed between the first radial bearing protective component and the shaft; and a second radial bearing protective component, sleeved on the shaft and in a position corresponding to the magnetic bearing, a second gap being radially formed between the second radial bearing protective component and the shaft; the height of a working gap being greater than the height of the second gap, the height of the second gap being greater than the height of the first gap.

Abstract: Provided is a linear compressor comprising a cylinder, a piston, a cylinder shell, a linear motor stator, a magnetic levitation bearing and a rotor. One end of the cylinder shell is sleeved on the cylinder, and another end of the cylinder shell is provided with a mounting cavity communicating with the cylinder cavity. A cavity wall of the mounting cavity is respectively provided with a stator mounting groove and a protrusion in a circumferential direction thereof. The linear motor stator is mounted in the stator mounting groove. The magnetic levitation bearing is disposed on the cavity wall of the mounting cavity. The rotor comprises a rotor bracket and a magnetic member disposed on the rotor bracket; the rotor bracket is connected with the piston. The use of magnetic levitation bearing can avoid mechanical friction caused by direct contact of the rotor with the linear motor stator.

Abstract: A shaft control method and device for a magnetic suspension system. The shaft control method for the magnetic suspension system includes: acquiring a displacement signal obtained by detecting displacement of a shaft in the magnetic suspension system (Step 101); separating whirling displacement from the displacement signal (Step 102); and controlling whirling of the shaft according to the whirling displacement (Step 103). By the disclosure, the effect of suppressing the whirling of the shaft during high-speed rotation of the magnetic suspension system is achieved.