An electric rotating machine capable of lowering the temperature of a rotor disposed, wherein at least one of closed ventilation loops for cooling is formed, one of the loops constituting a ventilation passage communicating with an exhaust side through a heat source of the end of the generator to a cooler, thereby to supply cooling wind to the rotor after it passes through the cooler.

Electric rotating machine

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

A rotary electric machine includes: a stator core fixed to a casing; a coil end formed on the stator core; a bracket fixed to the casing; an arm that extends from the bracket and that is made of metal and that has elasticity; a holder that is attached to the arm and that is made of resin; and a sensor that is attached to the holder and that contacts the coil end to detect temperature of the coil end.

Rotary 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 provides a static dedusting air purifier which comprises a shell, wherein a static dedusting unit used for ionizing air and enabling pollutants to form particles and subside, a mixed flow sterilization unit used for retaining ionized air and carrying out sterilization through utilizing ozone generated after ionization, a detection unit used for detecting an air quality parameter in the mixed flow sterilization unit and outputting the air quality parameter to a control unit, and the control unit used for receiving the air quality parameter and controlling the static dedusting unit and/or the mixed flow sterilization unit to act according to the air quality parameter are sequentially arranged inside the shell from bottom to top, wherein a circuitously communicated airflow channel is formed inside the mixed flow sterilization unit; the ozone concentration of an inlet of the airflow channel is higher than the ozone concentration of an outlet of the airflow channel; the outlet of the airflow channel is connected with a clean air feeding fan; the control unit controls the air speed of the clean air feeding fan; and clean air is exhausted through an upper air outlet in the top end of the shell The static dedusting air purifier has the advantages of good purification effect, low energy consumption and convenience in utilization

Static dedusting air purifier

The invention provides a linear compressor and an oil lubricating method thereof. The linear compressor comprises an outer casing which accommodates refrigerating mediums and lubricating oil; an air cylinder, a piston and a piston shaft are arranged inside the outer casing; a gap is formed between the air cylinder and the piston shaft; a flange plate is configured on the outer peripheral surface of the air cylinder; an air cylinder cover is fixed on the flange plate; an exhaust valve is arranged on the internal side of the air cylinder cover on the end portion of the air cylinder; space which is defined by the piston, the air cylinder and the air cylinder cover is separated into a compression chamber and an exhaust chamber which are communicated through the exhaust valve; the linear compressor is provided with an oil storage air chamber which is communicated with the exhaust chamber and the gap; the lubricating oil is connected with the compression chamber through an oil suction pipe; the lubricating oil enters into the compression chamber through the oil suction pipe due to relative movement between the piston and the air cylinder; the lubricating oil and the refrigerating mediums are mixed inside the compression chamber to form into high pressure gas-oil mixture; the high pressure gas-oil mixture is discharged into the exhaust chamber; partial high pressure gas-oil mixture enters into the oil storage chamber and the gap is full of the partial high pressure gas-oil.

Linear compressor and oil lubricating method thereof

The invention provides a piston positioning device of a linear compressor. A piston comprises a piston head and a piston rod with a hollow internal, wherein the piston head and the piston rod are movably connected through an elastic component. The piston of the linear compressor adopts a movable connecting method, so that the abrasion of a cylinder piston is reduced, the cylinder clamping generation of the linear compressor is prevented, the defects of cylinder clamping and abrasion due to such factors as low coaxiality and impurity entrance are overcome, and the efficiency and the reliability of the linear compressor are improved.

Piston positioning device of linear compressor

The invention discloses a centrifugal washing method and a washing machine. The method includes: enabling clothes in a rotatable inner drum to rotate along with the inner drum and closely attach to the inner wall of the inner drum under the action of centrifugal force, and enabling washing liquid to be sprayed to the clothes continuously from an axial pipeline at the inner center of the inner drum and to penetrate the clothes under the action of the centrifugal force to take away stain, so that the clothes are washed and wear of the clothes is reduced, wherein the liquid level of the washing liquid is constantly lower than the lowest position of the inner drum during washing. The washing machine using the method avoids splashing and huge increase of washing foam caused by the fact that the inner drum in high-speed rotation hits the washing liquid. Meanwhile, water resource is saved, resistance of the washing liquid to the inner drum in high-speed rotation is weakened, power consumption is reduced, and washing is cleaner and more even.

Centrifugal washing method and washing machine

The utility model provides a straight -line compressor, including the shell and set up active cell, stator, coil, piston, cylinder and the cylinder head in the shell, the coil setting is in the stator, and the stator forms magnetic field, and the active cell is provided with the magnet, and the magnet is inserted to slide and is set up magnetic field, and the piston is connected with the active cell, and piston slip setting is in the cylinder, and the cylinder lies in one side of stator and fixes the terminal surface at the stator, and the cylinder head is fixed on the cylinder. Through with the cylinder snap -on on the terminal surface of stator, and need not to adopt the ring flange to fix, the effectual overall structure who simplifies sharp compressor has simplified the equipment process of sharp compressor, improves the packaging efficiency, and the cylinder head snap -on is on the cylinder for the magnetic field that the coil formed is kept away from to the cylinder, and the cylinder head is kept apart with the stator, and reduction magnetic field is followed the cylinder head and is outwards revealed, thereby can effectual improvement electric efficiency.

Xu Sheng

Papers

Static dedusting air purifier

Linear compressor and oil lubricating method thereof

Piston positioning device of linear compressor

Centrifugal washing method and washing machine

Straight-line compressor