Abstract: A piston limiting structure, including: a cylinder, a piston, and a flange provided with a limiting piece, the cylinder has a piston hole perpendicular to an axial direction of the cylinder and penetrating through the cylinder, and a projection of the piston hole in a penetrating direction is circular. The piston is disposed in the piston hole in a form-fit manner and is slid in the piston hole in a reciprocating manner. A side wall of the piston is provided with a thrust groove, a bottom surface of the thrust groove forms a thrust surface on the side wall of the piston, and the thrust groove does not penetrate through two ends of the side wall of the piston along an axial length of the piston. The limiting piece abuts against the thrust surface.

Abstract: A power consumption control device includes: a voltage detection circuit configured to detect whether an input power supply of a magnetic levitation system to be controlled is turned off; and a comparison unit configured to detect an operating parameter of a motor of the magnetic levitation system during an operation of the motor as a generator, and compare the operating parameter with a set parameter to obtain a comparison result; a motor controller of the magnetic levitation system controls the motor of the magnetic levitation system to operate as the generator in a case that the input power supply is turned off, a bearing controller of the magnetic levitation system adjusts a magnitude of a bearing bias current of the magnetic levitation system according to the comparison result, to control a power consumption of a magnetic levitation bearing of the magnetic levitation system within a set range.

Abstract: The present disclosure provides a pump body assembly, a heat exchange apparatus, a fluid machine and an operating method thereof. The pump body assembly includes a piston, a shaft, a piston sheath, and a cylinder. The shaft drives the piston to rotate and reciprocate within the piston sheath while rotating. The piston sheath is located in the cylinder, and a compression chamber is defined between an outer circumferential wall of the piston and an inner wall of the cylinder. A pressure relief recess is defined in the outer circumferential wall of the piston or the inner wall of the cylinder at a position corresponding to the compression chamber.

Abstract: Disclosed are a magnetic bearing, a compressor and an air conditioner. The magnetic bearing includes a radial stator, wherein the radial stator has a plurality of stator teeth extending inwardly in a radial direction thereof; two axial stators are arranged on two axial sides of the stator teeth, respectively; and radial control coils are wound on the stator teeth, each radial control coil being located outside an area of the stator teeth covered oppositely by the two axial stators. The magnetic bearing, the compressor and the air conditioner can effectively reduce the degree of coupling between a radial electromagnetic control magnetic circuit and an axial electromagnetic control magnetic circuit, and reduce the control difficulty of the magnetic bearing.

Abstract: The present disclosure provides a pumping assembly, a compressor and air conditioning equipment. The pumping assembly includes a first structural body, a rolling bearing assembly, a second structural body, a third structural body and a main shaft passing through the first structural body, the rolling bearing assembly, the second structural body and the third structural body. The pumping assembly includes: a first lubricating oil path passing through a second structural part, the sliding sheet backpressure cavity, a third structural part, a second structural part and a rolling body of the rolling bearing assembly; a second lubricating oil path passing through the sliding sheet backpressure cavity and a first pressure relieving groove of the first structural body; and a third lubricating oil path passing through the sliding sheet backpressure cavity, the first structural part and the rolling body of the rolling bearing assembly.

Abstract: The present application provides a rotor assembly and a self-starting permanent magnet synchronous reluctance motor. The rotor assembly includes a rotor core, wherein on a cross section of the rotor core, the rotor core is provided with slit slots, q-axis squirrel cage slots and permanent magnets, the q-axis squirrel cage slots are disposed at two ends of the slit slots, the permanent magnets are disposed in the slit slots, the permanent magnet located at the innermost layer in a d-axis direction is at least asymmetrically disposed relative to a d-axis, and an offset direction of the permanent magnet located at the innermost layer relative to the d axis is consistent with a rotation direction of the rotor assembly.

Abstract: The present disclosure provides a direct starting synchronous reluctance motor rotor, a motor and a rotor manufacturing method. The direct starting synchronous reluctance motor rotor comprises: a rotor core provided with a plurality of slit grooves, two ends of each of the slit grooves being provided with a filling groove respectively to form a magnetic barrier layer, a first end of the filling groove being disposed adjacent to the slit groove, a second end of the filling groove being extended towards an outside of the rotor core, and an outer peripheral surface of the rotor core being provided with a notch communicated with the second end of the filling groove.

Abstract: The present disclosure provides a robot control apparatus. The apparatus includes: a signal acquisition unit configured to obtain, in the case that a robot triggers emergency stop and if the body switch of the robot is turned on, a switch turn-on signal that the body switch of the robot is turned on; a control unit configured to output an enable release control signal; a logic processing unit configured to perform logic processing on the switch turn-on signal if the switch turn-on signal is received, then output a manual release signal, perform logic processing on the enable release control signal if the enable release control signal is received, and then output an enable release signal; and a signal output unit configured to control, if the manual release signal or the enable release signal is received, the motor of the robot to release a band brake.

Abstract: Some embodiments of the disclosure disclose a bearing assembly and a compressor with the bearing assembly. The bearing assembly includes: a retainer assembly (50), a bearing stationary ring (40), and a bearing rotary ring (10). The retainer assembly (50) is disposed between the bearing stationary ring (40) and the bearing rotary ring (10). A lubrication passage is provided in an end face of the bearing rotary ring (10).

Abstract: A permanent magnet auxiliary synchronous reluctance motor includes a stator portion and a rotor portion. The stator portion includes a stator core and a winding embedded in the stator core. The stator core is provided with a stator tooth and a stator slot. The rotor portion is provided inside the stator portion; a rotor body of the rotor portion is provided with a plurality of permanent magnet slot groups which are evenly arranged along a circumferential direction of the rotor body; each of the permanent magnet slot groups is provided with multiple layers of permanent magnet slots; a distance between end portions of adjacent permanent magnet slots between adjacent permanent magnet slot groups is less than or equal to a width of a stator tooth boot of the stator tooth, and the number of slots per pole and per phase of the motor is two or three.

Abstract: The present disclosure relates to a flange and a pump body assembly with the same. The flange includes a flange body having a shaft hole formed therein, with a back pressure groove being provided besides the shaft hole, a communication part being provided in a side wall of the back pressure groove on a side close to the shaft hole, the communication part communicating the back pressure groove with the shaft hole, and the communication part being configured to supply lubricating oil to the back pressure groove or discharge the lubricating oil from the back pressure groove. By providing the communication part in the side wall of the back pressure groove of the flange body on the side close to the shaft hole, the lubricating oil can be timely conveyed into the back pressure groove by means of the communication part.

Abstract: Some embodiments of a disclosure provide a piston limiting structure, a compressor, and a heat exchange apparatus. The piston limiting structure includes: a cylinder, having a piston hole perpendicular to an axial direction of the cylinder and penetrating the cylinder, wherein a projection of the piston hole in a penetrating direction is circular; a piston, disposed in the piston hole and slid in the piston hole, wherein a side wall of the piston is provided with a limiting surface, and the limiting surface does not penetrate two ends of the side wall of the piston along an axial length of the piston; and a limiting member, wherein the cylinder is provided with a limiting hole penetrating from an outer wall of the cylinder to the piston hole, the limiting member is mounted in the limiting hole, and the limiting member abuts against the limiting surface.

Abstract: The present disclosure provides a rotor assembly and a motor. The rotor assembly includes a rotor body; the rotor body includes a plurality of magnetic poles centered on an axis of the rotor body and uniformly arranged along a circumferential direction of the rotor body; each of the magnetic poles includes a filling slot provided therein with a conductive and magnetic isolation material, the filling slots of the plurality of magnetic poles are orderly arranged along the circumferential direction of the rotor body; two ends of each of the filling slots along the circumferential direction of the rotor body have a first sidewall and a second sidewall respectively; the first sidewall of each of the filling slots and the second sidewall of the adjacent filling slot are parallel to each other, and together form a magnetic flux channel parallel to the q-axis.

Abstract: The present disclosure provides a rotor structure, an electric motor and a rotor manufacturing method. The rotor structure includes a plurality of rotor sheets (100) and a rotating shaft. The rotor sheets (100) are stacked in sequence along an axial direction of the rotor structure. Each of the rotor sheets (100) is provided with a shaft hole (20), a first slot (111), and first filling slots (121) at both ends of the first slot (111). The first slot (111) extends in a direction of a direct axis (3) of the rotor structure and includes slot sections (1110) at opposite sides of the shaft hole (20). The rotating shaft passes through the shaft hole (20) of the plurality of rotor sheets (100). The first slot (111), the first filling slots (121) and the rotating shaft form a first flux barrier layer (101).

Abstract: A rotor structure, a permanent magnet auxiliary synchronous reluctance motor and an electric vehicle. The rotor structure includes a rotor body, and permanent magnet slot groups are disposed on the rotor body; the permanent magnet slot groups each include an outer layer permanent magnet slot; and a third bent slot and a fourth bent slot are further disposed on the rotor body. A third angle is formed by a length directional geometric center line of the third bent slot and a length directional geometric center line of a first segment of the outer layer permanent magnet slot a fourth angle is formed between a length directional geometric center line of the fourth bent slot and a length directional geometric center line of a second segment of the outer layer permanent magnet slot.

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: A fault processing method for a displacement sensor includes: receiving a plurality of detected signals from a plurality of detecting probes and a given signal of a spare probe, wherein the detecting probes are configured to detect a displacement value of a rotation shaft of a magnetic levitation motor to obtain the detected signals, and the spare probe is configured to replace a faulty probe among the plurality of detecting probes; determining whether there is a faulty probe among the plurality of detecting probes based on the plurality of detected signals and the given signal; and connecting the given signal of the spare probe to the faulty probe corresponding to a case that a determination result is yes.

Abstract: Provided are a magnetism modulating ring structure, a magnetic gear assembly, and a compound motor. The magnetism modulating ring structure includes a plurality of modulating units and a plurality of connection parts. Each two adjacent modulating units are connected by one of the plurality of connection parts to form the magnetism modulating ring structure, and the magnetism modulating ring structure is arranged within an annular gap enclosed by a first rotor structure and a second rotor structure. A groove structure is formed on one side of the modulating unit facing the first rotor structure, and two sides of the groove structure respectively form a curved boot-like part, and an edge of the curved boot-like part facing the second rotor structure has a curved contour line parallel to flux lines passing through an inside of the curved boot-like part.

Abstract: A compressor includes a drive motor and a wind wheel, wherein the drive motor includes a casing and a rotor, the rotor being rotatably arranged within the casing; the wind wheel is mounted at a first axial end of the rotor. A thrust disc is also provided at the first axial end of the rotor. An axial bearing assembly is arranged between the thrust disc and the wind wheel, and the axial bearing assembly is arranged fixedly with respect to the casing. A first air gap is formed between a first end of the axial bearing assembly and the wind wheel, and a second air gap is formed between a second end of the axial bearing assembly and the thrust disc. The air compressor reduces a tolerance accumulation caused by part cooperation between axial bearing assemblies, and more precisely ensures effective working clearances.

Abstract: A rotor structure, a permanent magnet auxiliary synchronous reluctance motor and an electric vehicle, the rotor structure includes a rotor body and an outer layer permanent magnet. The rotor body is provided with a magnetic steel slot group. The magnetic steel slot group includes an outer layer magnetic steel slot. The outer layer magnetic steel slot includes a plurality of magnetic steel slot segments. At least two of the plurality of magnetic steel slot segments are arranged in a radial direction of the rotor body and are disposed oppositely at both sides of a direct axis of the rotor body. The outer layer permanent magnet is arranged in the magnetic steel slot segment, a length of the outer permanent magnet disposed in the two oppositely arranged magnetic steel slot segments is L, and a maximum distance between the two oppositely arranged magnetic steel slot segments is C, where 0.8×C?L.