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 motor fixing structure of a linear compressor. The structure comprises inner stators, a cylinder is arranged in the coaxial direction of the inner stators, and the end of the cylinder is connected with a front flange. The front flange is inserted in the inner stators through concave and convex structures. By means of the motor fixing structure of the linear compressor, magnetic losses caused by fixing the inner stators through the cylinder can be reduced, the efficiency of a linear motor is improved, and the inner stators can be accurately positioned.

Motor fixing structure of linear compressor

The invention discloses a motor structure of a linear compressor and the linear compressor. The motor structure comprises an inner stator, an outer stator and a mover, wherein the mover comprises a mover framework and a magnet; the inner stator is formed by two annular magnetic conductive sheet groups buckled on the two sides of a coil; the thicknesses and/or lengths of the outer walls, matched with the magnet, of the two annular magnetic conductive sheets are different. The problem of magnet stress decline caused by the reason that the magnet is not in a balanced position is solved by changing the width of the magnetic conductive sheets for forming the inner stator; in addition, a magnetic saturation phenomenon caused by an uneven contact area between the magnet and the inner stator also can be avoided; and therefore, the performance and the efficiency of the motor are effectively ensured.

Motor structure of linear compressor and linear compressor

The invention provides a linear compressor and a lubricating oil supply method. The linear compressor comprises an outer shell, a stator and a coil, wherein the stator and the coil are installed in the outer shell and the coil is arranged on the stator. The linear compressor also comprises an oil supply mechanism which comprises an oil cylinder, a valve element, a resetting spring and an oil exit pipe, wherein the valve element and the resetting spring are located in the oil cylinder; one end of the resetting spring is pressed against one end of the oil cylinder and the other end of the resetting spring is pressed against the valve element; an oil storage cavity is formed between the valve element and the other end of the oil cylinder; the oil cylinder is also provided with an oil inlet and an oil outlet communicating with the oil storage cavity; the valve element is located within the scope of a magnetic field generated by the coil. The valve element is located within the scope of the magnetic field generated by the coil and can move in a reciprocating manner in the oil cylinder under the influence of the alternating magnetic field, so that oil is supplied and the manufacture cost of the linear compressor is reduced.

A linear compressor and a lubricating oil supply method

The invention discloses a front flange of a linear compressor and a linear compressor comprising the front flange. One and more sunk parts are arranged on the surface of one side, facing to a linear motor, of the front flange. According to the front flange of the linear compressor, the sunk parts are arranged on the front flange; if a magnetic field leaked by the linear motor has s trend of forming eddy current in the front flange, flowing passages of the eddy current are blocked by the sunk parts, namely the resistance of propagation of the eddy current is improved, so that the flowing loss of the eddy current can be reduced; meanwhile, the propagation resistance of the eddy current is improved, so that one part of the eddy current can be reduced; due to the two reasons, the magnetic loss caused by exposing the flange in the magnetic field can be reduced, and the efficiency of the motor can be improved; in addition, due to the presence of the sunk parts, the rigidity and strength of the front flange can be improved; the effect of improving the structural strength can be exerted.

Front flange of linear compressor and linear compressor comprising front flange

The invention provides a linear compressor with the adjustable air cylinder volume and a control method of the linear compressor. The linear compressor with the adjustable air cylinder volume comprises a shell, a stator, a main coil, a piston, an air cylinder, a rotor, a spring and a rear baffle, wherein the stator, the main coil, the piston, the air cylinder, the rotor, the spring and the rear baffle are arranged in the shell, and the rotor is provided with a permanent magnet. The linear compressor is characterized in that the rotor is further provided with an auxiliary coil, the auxiliary coil is used for selectively overlaying or counteracting the intensity of a magnetic field produced by the main coil, and the efficiency and reliability of the linear compressor are improved.

Li Hengguo

Papers

Motor fixing structure of linear compressor

Motor structure of linear compressor and linear compressor

A linear compressor and a lubricating oil supply method

Front flange of linear compressor and linear compressor comprising front flange

Linear compressor with adjustable air cylinder volume and control method thereof