CN2812383Y

CN2812383Y - Motor stator

Info

Publication number: CN2812383Y
Application number: CN 200520026683
Authority: CN
Inventors: 李元鹤; 李春鹏
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2005-07-15
Filing date: 2005-07-15
Publication date: 2006-08-30
Anticipated expiration: 2015-07-15

Abstract

The utility model discloses a motor stator, which comprises a through groove which is arranged on the inner peripheral part of the motor stator and is used for winding a coil, and through holes which are arranged on the outer peripheral part of the motor stator and are used for dissipating heat, wherein threads are formed on the inner peripheral surfaces of the through holes; a plurality of groups of through holes are formed on the outer peripheral part of the motor stator at intervals, and every 2-4 through holes are formed into a group. Because the inner peripheral surfaces of the through holes which are used for dissipating heat are formed into a thread structure by the motor stator of the utility model, the heat dissipating areas in the through holes are enlarged, the flowing speed of cooling medium in the through holes is reduced, the staying time of the cooling medium in the through holes is enlarged, and the heat dissipating efficiency of a motor is enhanced; thereby, the purpose of improving the motor efficiency can be achieved.

Description

Motor stator

Technical field

The utility model relates to a kind of motor stator, and it is big particularly to relate to a kind of area of dissipation, the motor stator of good heat dissipation effect.

Background technology

Fig. 1 is the compressor inner structure schematic diagram.

The rotary compressor structure as shown in Figure 1, it is to be made of following structure: be provided with suction inlet 109a and efferent duct 118, and the inside that is filled with the shell A of certain gauging is provided with motor section and compression unit.

Motor section includes: the stator 103 of motor, rotor 102 and rotating shaft 105, and wherein, stator 103 constitutes concentric circles with rotor 102, and the outer peripheral face of the inner peripheral surface of stator 103 and rotor 102 keeps certain clearance; Rotating shaft 105 is pressed into the central part of rotor 102; Below rotating shaft 105, be provided with the compression unit of absorption and compression refrigerant.

Compression unit is made of following structure: the circular cylinder 109 that is fixed on the inner peripheral surface of shell A and connects with suction pipe; The upper bearing 110 and the lower bearing 111 of combining closely and in the two sides of cylinder 109, being through with rotating shaft 105; With rotating shaft 105 is the center, and that carries out in cylinder 109 simultaneously that off-centre rotatablely moves rolls ring 107, and is formed with the compression stroke 108 that forms compression refrigerant gas when rolling ring 107 rotations with upper bearing 110, lower bearing 111.

After as above the closed rotary compressor that constitutes connected power supply, the rotor 102 of motor section 104 drove the rotating shaft 105 that is pressed in rotor 102 and together rotates.Rotation along with rotating shaft 105, the eccentric part 106 that rotating shaft 105 lower ends form and roll ring 107 rotations with eccentric part 106 combines, to enter the cold media gas that compression stroke 108 interior low-temp low-pressure compressing refrigerant gas become HTHP through the suction inlet 109a of cylinder 109, the cold media gas of compressed HTHP is discharged from efferent duct 118 after motor section by compression unit.

Fig. 2 is a structural representation of forming the stator punching of stator core; Fig. 3 is that amplify and generalized section the part of Fig. 2.

Usually, motor stator is made up of coil and stator core.Coil produces revolving magnetic system by AC power, and stator core is the magnetic that produces magnetic flux according to revolving magnetic system.Stator core is to be formed by the direction accumulation of a plurality of stator punchings along axle, and the slotted eye alignment on its stator punching forms through slot, is wound with coil on the through slot.During machine operation, produce a large amount of heats, directly have influence on the operating efficiency of motor.In order to improve the operating efficiency of motor, consider to be provided with through hole at the periphery of motor stator, when compressor operating, make refrigerant pass through hole, thereby reach the purpose that refrigerant is lowered the temperature to motor radiating simultaneously.

As Fig. 2, shown in Figure 3, be formed with the groove 1 that is used for winding around in the inner rim portion of the stator punching of composition stator core, be formed with the through hole 2 that is used for to motor radiating on the outer peripheral portion, constitute stator core by stator punching accumulation after, each through hole 2 alignment accumulation forms through holes 3.When passing motor section, refrigerant except passing through, also passes through hole 3 from the gap that forms between the stator of motor and the rotor.

In order to improve the operating efficiency of motor, need to increase to radiation effect of motor, still, on stator core, too much through hole 3 can not be set, perhaps the sectional area with through hole 3 enlarges.This is because through hole is big more or many more, and the magnetic field degree of saturation of motor is just serious more, and efficiency of motor is also just low more.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of area of dissipation big, the motor stator of good heat dissipation effect.

The technical scheme that the utility model adopted is: a kind of motor stator, include: the groove that is used for winding around that is arranged on the inner rim portion of motor stator, be arranged on the through hole that is used to dispel the heat of the outer peripheral portion of motor stator, be formed with screw thread on the inner peripheral surface of described through hole.Outer peripheral portion at motor stator is formed with many group through holes at interval, and every 2-4 through hole is formed one group.

Motor stator of the present utility model, because the inner peripheral surface of the through hole that will be used to dispel the heat is arranged to helicitic texture, enlarged the area of dissipation in the through hole, also reduced the refrigerant mobile speed of portion within it, increased the time that refrigerant stops in through hole, improve the radiating efficiency of motor, thereby reached the purpose that improves electric efficiency.

Description of drawings

Fig. 1 is a rotary compressor internal structure schematic diagram;

Fig. 2 is the structural representation of the motor stator punching of prior art;

Fig. 3 is the generalized section of the motor stator of prior art;

Fig. 4 is the structural representation of motor stator punching of the present utility model;

Fig. 5 is the generalized section of motor stator of the present utility model.

Wherein:

1: groove 2: through hole

3: through hole 4: through hole

5: screw thread 102: rotor

103: stator 102: rotor

104: motor section 105: rotating shaft

106: eccentric part 107: roll ring

108: compression stroke 109: cylinder

109a: suction inlet 110: upper bearing

111: lower bearing

Embodiment

Describe motor stator of the present utility model in detail below in conjunction with the drawings and specific embodiments.

Fig. 4 is the structural representation of motor stator of the present utility model; Fig. 5 is that the B portion of Fig. 4 amplifies and generalized section.

As Fig. 4, shown in Figure 5, motor stator includes: be arranged on the groove that is used for winding around 1 of the inner rim portion of motor stator, be arranged on the through hole that is used to dispel the heat 4 of the outer peripheral portion of motor stator, be formed with screw thread 5 on the inner peripheral surface of described through hole 4.Outer peripheral portion at motor stator is formed with many group through holes 4 at interval.Every 2-4 through hole 4 is formed one group.Embodiment of the present utility model forms one group by 3 through holes.

Adopt the motor of motor stator of the present utility model, be used for compressor, when compressor operating, its compressed refrigerant flows out through motor section from the compression unit of compressor, wherein a part of refrigerant flows to the outlet of compressor from the gap that forms between the motor stator of motor section and the rotor, some refrigerant flows to the outlet of compressor from the through hole that is used to dispel the heat on the motor stator.Because, being formed with screw thread on the through hole inner peripheral surface, refrigerant increases with the contact area of inner circumferential surface when portion flows within it, and refrigerant needs along the lines of screw thread mobile, so also increased the time that stops in through hole.The refrigerant that so more helps flowing absorbs the heat of motor internal, has effectively reduced the heat of motor internal, has improved the operating efficiency of motor greatly.

Claims

1. motor stator, include: the groove that is used for winding around (1) that is arranged on the inner rim portion of motor stator, be arranged on the through hole that is used to dispel the heat (4) of the outer peripheral portion of motor stator, it is characterized in that, be formed with screw thread (5) on the inner peripheral surface of described through hole (4).

2. motor stator according to claim 1 is characterized in that, is formed with many group through holes at interval in the outer peripheral portion of motor stator.

3. motor stator according to claim 2 is characterized in that, every 2-4 through hole (4) is formed one group.