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 refrigerator comprising a refrigerator body and a door body arranged on the refrigerator body in an open-close mode, and a sterilization method thereof. The refrigerator further comprises a control module, an ice making module and a sterilization module. The control module can adjust the working state of the refrigerator; the ice making module is used for freezing liquid water into ice cakes to be stored and comprises an ice outlet which communicates with the outside space and can allow the ice cakes and/or ice water to flow out; and the sterilization module is arranged close to the ice outlet and can sterilize and disinfect the ice outlet. The sterilization module sterilizes and disinfects the ice outlet so that bacteria and insects which are attached to the ice outlet can be killed, and moisture at the ice outlet can be dried while the sterilization and insect killing effects are achieved; and the ice outlet is kept in a dry environment for a long term, breeding of the bacteria and the insects is restrained, and the residual moisture can be also prevented from absorbing impurities and harmful substances in air, so that it is beneficial for human health.

Refrigerator and sterilization method thereof

A piston structure of a linear compressor comprises a hollow connecting rod, a piston, a clamping component and a first fixing component, wherein the piston is located at the end of the connecting rod; the clamping component is arranged in the hollow portion of the connecting rod, and a via hole is formed in the center of the clamping component; the first fixing component penetrates through the via hole to be clamped to the clamping component and is connected with the piston. The invention further discloses the linear compressor. The connecting strength between the connecting rod and the piston is controlled effectively, and the air suction performance is guaranteed; abrasion aggravation caused by axis deviation of the piston is avoided, the piston is automatically matched to the optimal position when running in an air cylinder, friction power is reduced, abrasion to the piston is reduced, and the efficiency and reliability of the compressor are greatly improved.

Piston structure of linear compressor and linear compressor

The invention provides a linear compressor and a position detection method The linear compressor comprises a shell, a piston and an air cylinder, wherein the piston and the air cylinder are arranged in the shell The piston is arranged in the air cylinder in a sliding manner An exhaust valve and an air cylinder cover are arranged on the air cylinder The linear compressor further comprises a position detection assembly The position detection assembly comprises a detection magnetic body and detection coils The detection magnetic body is fixed to the exhaust valve The detection coils are arranged on the air cylinder cover The detection magnetic body and the detection coils are arranged oppositely In the reciprocating motion process of the piston, the distances of the piston close to the exhaust valve are different, impacting force of different degrees is generated to the exhaust valve, and therefore the opening degrees of the exhaust valve are different; the distance between the detection magnetic body and the detection coils is changed, and therefore induced electromotive force values generated by the detection coils are different; and according to the induced electromotive force values generated by the detection coils, displacement of the piston can be calculated, position detection accuracy of the linear compressor is improved, and use reliability is improved

Linear compressor and position detection method

The invention discloses a lubricating structure for a linear compressor. The lubricating structure for the linear compressor comprises an air cylinder and a front flange; an oil supply pipeline is arranged on the front flange; a first oil pipeline which can transport lubricating oil from the oil supply pipeline to the piston surface is arranged between the front flange and a combination surface of the air cylinder. The lubricating structure for the linear compressor can reduce friction between a piston and the air cylinder wall and restrain temperature of a contact position of the piston and the air cylinder wall from rising and enables the linear compressor performance to be improved.

Lubricating structure for linear compressor

The invention discloses an inspiration muffler device of a linear compressor. The linear compressor comprises a back baffle plate and an active cell, wherein an inspiration structure is arranged between the back baffle plate and the active cell, and can move relative to the active cell or the back baffle plate. The inspiration muffler device can achieve inspiration muffling, diversion and bearing effects when the linear compressor operates; and the inspiration structure and a piston rod are coaxially arranged, so that the movement stability and consistency of the whole system are guaranteed.

Li Hengguo

Papers

Refrigerator and sterilization method thereof

Piston structure of linear compressor and linear compressor

Linear compressor and position detection method

Lubricating structure for linear compressor

Inspiration muffler device of linear compressor