A rotating electric machine comprises a stator and a rotor. In the rotor, numerous slots are formed along a circumferential direction. In the each of slots, a first stator coil and a second stator coil are inserted and insulated by an insulator inserted before inserting the coils in the slots. The insulator encircles the first and second stator coils so as to be formed into an S shape. The center portion thereof extends over the area between the first and second stator coils. One end of the insulator is held between one surface of the center portion of the insulator and the first stator coil. Other end of the insulator is held between another surface of the center portion of the insulator and the second stator coil.

Rotating electric machine

The invention discloses a permanent magnet type air pump, relates to low-pressure air compression equipment and belongs to a double-cylinder or double-membrane single-phase alternating-current full wave air pump. Driving power of the permanent magnet type air pump is produced through combined action of a magnetic field of a permanent magnet and an electromagnetic field. The two sides of a driving shaft 6 of the permanent magnet type air pump are provided with two permanent magnets 10 correspondingly, the middle of the driving shaft 6 is provided with a coil 4 and a hollow iron core 5 which are fixed to a pump body 3, and the driving shaft 6 can freely move in the hollow iron core 5 in the axial direction. When the coil 4 is connected to a single-phase alternating-current power source, an alternating magnetic pole is produced on the side, facing the permanent magnet, of the iron core 5, and the sides, facing the iron core 5, of magnetic poles of the two magnets on the driving shaft are the same in polarity (N pole or S pole). Due to the fact that the driving shaft 6 does straight reciprocating motion under the effect of attraction and repulsion of the electromagnetic field and the permanent magnet field, two pistons or membranes are driven to achieve air pump suction and compression stroke. Due to the fact that only attraction of the electromagnetic field is used as driving force of the electromagnetic type air pump, the permanent magnet type air pump has the good energy saving effect.

Permanent magnet type air pump

The invention discloses a compressor and refrigeration equipment and belongs to the technical field of compressors The compressor comprises a compressor body The compressor body is internally provided with a cylinder, a piston mechanism arranged in the cylinder and an oil storage part The oil storage part is used for storing lubricating fluid The inner wall of the cylinder is provided with anoil storage groove An elastic deformation oil suction valve plate is arranged in the first oil storage groove The compressor body is further provided with an oil suction pipe The oil suction end ofthe oil suction pipe communicates with the oil storage part The oil discharge end of the oil suction pipe communicates with the first oil storage groove The oil suction pipe is controlled to communicate or be blocked through elastic deformation of the oil suction valve plate According to the compressor provided by the invention, the inner wall of the cylinder is provided with the oil storage groove and the oil suction pipe communicating with the oil storage groove so that the compressor can automatically extract the lubricating fluid to lubricate the piston mechanism through negative pressure generated by reciprocating motion of the compressor during operation and can automatically implement automatic oil supply operation without an extra oil pump device, the internal structure of thecompressor is simplified, and the operation stability of the compressor is improved

Compressor and refrigeration equipment

The invention discloses a compressor and a refrigerating device and belongs to the technical field of compressors. The compressor comprises a compressor body. An air cylinder, a piston mechanism arranged in the air cylinder and an oil storage part are arranged in the compressor body. The piston mechanism comprises a piston head and a piston rod. The oil storage part is used for storing lubricatingfluid. A first oil storage groove is formed in the outer wall of the piston rod. The compressor body is further provided with an oil suction pipeline. The oil suction end of the oil suction pipelinecommunicates with the oil storage part. The oil discharging end of the oil suction pipeline communicates with the inner wall of the air cylinder. When the piston mechanism conducts reciprocating compression motion in the axial direction of the air cylinder, the oil discharging end of the oil suction pipeline and the first oil storage groove can be switched between a communication state and a separation state. By means of the compressor, due to the oil storage groove of the piston mechanism and the oil suction pipeline communicating with the oil storage groove, the compressor can utilize negative pressure generated during the reciprocating motion of the compressor to automatically extract the lubricating liquid to lubricate the piston mechanism during running, the internal structure of thecompressor is simplified, and running stability of the compressor is improved.

Compressor and refrigerating device

The invention provides an oil pump assembly and a linear compressor comprising the same. The oil pump assembly comprises a cylinder body with an inner cavity, a piston and an elastic reset piece, wherein the piston is movably arranged in the inner cavity and divides the inner cavity into a first cavity body and a second cavity body; the cylinder body is provided with an oil inlet hole and an oil outlet hole which both communicate with the first cavity body; the elastic reset piece is arranged between the cylinder body and the piston; the elastic reset piece is arranged in the first cavity body, and the second cavity body is an empty cavity; or the elastic reset piece is arranged in the second cavity body, and the first cavity body is an empty cavity. According to the technical scheme, the problems that an oil pump of a linear compressor is complex in assembly process and high in cost in the prior art are solved.

Oil pump assembly and linear compressor comprising same

The invention discloses a method for controlling a compressor and the compressor and belongs to the technical field of compressors. The compressor comprises a shell and a rotor mounted in the shell. One end of the rotor performs linear reciprocating motion in a cylinder. The method comprises the following steps of detecting the movement position of the rotor in the cylinder, and controlling the movement of the rotor according to the detected movement position of the rotor. According to the method for controlling the compressor, the position of the rotor is automatically detected, the movementposition of the compressor motor is controlled, the phenomenon that the rotor impacts an exhaust valve plate due to the influence of abnormal pressure on the compressor is prevented, the compressor isprotected, the reliability of the compressor product is improved, and the service life of the compressor is prolonged.

Method for controlling compressor and compressor

The invention discloses a compressor and a control method thereof, and belongs to the technical field of compressors. The compressor comprises a stop mechanism arranged on an air cylinder end cover and provided with a stop piece capable of moving telescopically relative to an exhaust valve plate, and the stop piece is used for limiting the stop position where the exhaust valve plate moves backwards when the compressor exhausts air; a controller is also included and used for obtaining operation parameters when the compressor operates, the operation parameters are one of the operation power andthe operation frequency, and the stop position of the stop piece of the stop mechanism is adjusted according to a load parameter. According to the compressor provided by the invention, the stop mechanism and the controller are additionally arranged in an existing compressor, and the stop position of the stop piece of the stop mechanism on the exhaust valve plate can be adjusted by utilizing the controller, so that the maximum retreating distance of the exhaust valve plate can be limited again; and the time for re-adjusting the exhaust valve plate to the position for closing an exhaust valve port can be shortened, so that the exhaust valve port can be quickly re-closed after the exhaust valve plate finishes exhausting.

Compressor and control method thereof

The invention provides a detection method for a dead center of a linear compressor. Power (P) of the linear compressor is gradually increased; during the increase of the power (P), resonance frequency(f) of the linear compressor changes, too; when a change trend of the resonance frequency (f) is changed, the linear compressor at the state reaches the dead center state; and without the addition ofa sensor, the top dead center of the linear compressor can be accurately detected, so linear compressor operation efficiency and reliability can be improved.

Detection method for dead center of linear compressor

The invention discloses a linear compressor and an oil supply method thereof. The linear compressor comprises rod structures which are arranged between a rear baffle and an inner stator. The rod structures are sleeved with protective sleeves, and the protective sleeves are provided with oil guide through holes. The linear compressor can be used for leading lubricating oil into a positioning rod and the protective sleeve and fall onto a bearing through the oil guide through holes, so that a positioning shaft and the bearing are effectively lubricated, and the service life of parts is prolonged; the performance stability of the linear compressor is improved, and the service life of the linear compressor is prolonged; the mechanical efficiency of the linear compressor is improved; abrasive dust and impurities can be taken away, the friction face of a piston and the bearing is cleaned, the possibility that the impurities are accumulated and enter the piston is lowered, and the reliability of the linear compressor is improved.

Linear compressor and oil supply method thereof

The invention provides a linear compressor and a lubricating oil supply method The linear compressor comprises a casing and a compression assembly arranged inside the casing, wherein the compression assembly comprises a piston, an air cylinder for enabling the piston to reciprocate, an air exhaust valve and a cover body; a first mounting port is further formed in the cover body; the linear compressor further comprises an oil cylinder; the oil cylinder comprises an oil inlet, an oil outlet and a second mounting port which communicate with one another; the second mounting port is connected with the first mounting port; an elastic piece is further arranged between the second mounting port and the first mounting port and covers the second mounting port and the first mounting port in a sealed manner; a first valve body for controlling one-way flowing of lubricating oil is arranged at the oil inlet; an oil exhaust pipe is connected onto the oil outlet The elastic piece can vibrate continuously in the air suction and exhaust process of the compressor, so that the compressor supplies oil continuously, independent oil supply mechanisms are not required to be arranged, and the manufacturing cost of the linear compressor is reduced

Li Hengguo

Papers

Method for controlling compressor and compressor

Compressor and control method thereof

Detection method for dead center of linear compressor

Linear compressor and oil supply method thereof

Linear compressor and lubricating oil supplying method