CN203219016U - An ultra-efficient 4-pole stator stamping for a 315 center height motor - Google Patents

Abstract

The utility model discloses a super-efficient 4-pole stator punch of a 315 center height motor. The stator punch is a circular hollow structure, and winding slots extending inward are evenly distributed on the inner diameter of the stator punch. The inner diameter of the stator punch is 350mm, and the outer diameter is 540mm; the winding groove is composed of arc sides, two sides, two hypotenuses and two straight sides from the inside to the outside, and the depth of the winding groove is 49.7mm. The diameter of the arc edge is 11.8mm, and the depth of the straight edge is 1.5mm. The width of the groove formed at the connection between the two sides and the arc edge is the same as the diameter of the arc edge, and the width of the groove formed at the connection between the two sides and the hypotenuse is 8.2mm. mm, the tangential angle a formed by the hypotenuse and the inner diameter of the stator punch is 30 ⁰ , and the slot width formed by the two straight sides is 4.2mm.

Description

An ultra-efficient 4-pole stator stamping for a 315 center height motor

technical field

    The utility model relates to the field of electromagnetic structures of small and medium-sized motors, in particular to a super-efficient 4-pole stator stamping sheet for a 315 center height motor.

Background technique

The force index of the three-phase asynchronous motor has a great relationship with the structure of the stator punch. Different structures (including the outer diameter, middle diameter and groove shape of the stator punch) will have different performances, especially the efficiency index of the motor. Involved in energy efficiency assessment. The structure of stator stamping in the existing Y2 series motors can no longer meet the energy efficiency index stipulated in the current IEC standard. Therefore, it is inevitable to redesign the stator stamping structure of small and medium motors. The previous design only focused on the change of the groove shape, but did not give much consideration to the inner and outer diameters of the punching sheet and the corresponding number of grooves. In this case, a comprehensive electromagnetic design was carried out on the inner and outer diameters, slot shapes and number of slots of the stator punch, which met the IE3 energy efficiency requirements (94.1%) specified in IEC60034.30-2008.

Contents of the invention

The technical problem to be solved by the utility model is to provide an ultra-efficient 4-pole stator stamping of a 315 center high motor, the motor power is increased by 20%-50%, the efficiency is increased by 2-5 points, the noise is reduced by 10%, and the temperature rise is reduced About 5%.

The utility model is realized through the following technical solutions:

A super-efficient 4-pole stator stamping of a 315 center height motor, the stator stamping is a circular hollow structure, and winding slots extending inward are evenly distributed on the inner diameter of the stator stamping, and the inner diameter of the stator stamping is is 350mm, and the outer diameter is 540mm; the winding groove is composed of arc sides, two side sides, two hypotenuses and two straight sides from the inside to the outside, the depth of the winding groove is 49.7mm, and the diameter of the arc side is 11.8 mm, the depth of the straight side is 1.5mm, the width of the groove formed at the connection between the two sides and the arc edge is the same as the diameter of the arc edge, the width of the groove formed at the connection between the two sides and the hypotenuse is 8.2mm, and the The tangential angle a formed by the inner diameter of the stator punching sheet is 30 ⁰ , and the slot width formed by the two straight sides is 4.2mm.

The further improvement of the utility model is that the number of the winding slots is 72.

The further improvement of the utility model is that fastening grooves and positioning grooves are evenly distributed on the outer diameter circular surface of the stator punching sheet.

The further improvement of the utility model is that the positioning groove is composed of two hypotenuses, two first horizontal sides, two straight vertical sides and a second horizontal side, which are inclined to both sides from the outside to the inside. The width of the groove formed at the joint of the horizontal side is 18mm, the angle b formed by the hypotenuse and the vertical line is 15°, the width of the groove between the two straight vertical sides and the second horizontal side is 4mm, and the depth is 2mm. At the position of the center line of the positioning slot, the distance between the connection between the vertical side and the first transverse side and the tangent line of the outer diameter of the stator punching sheet is 3 mm. the

A further improvement of the utility model is that the connection between the hypotenuse and the first transverse side is a transitional connection with a circular arc, and the radius of the circular arc is 0.5mm.

A further improvement of the utility model is that the number of the fastening grooves is 11, and the number of the positioning groove is 1.

Compared with the prior art, the utility model has the following obvious advantages:

The utility model conducts a comprehensive electromagnetic design on the inner and outer diameters, slot shapes and slot numbers of the stator punching sheet to meet the IE3 energy efficiency requirement (94.1%) stipulated in IEC60034.30-2008, the motor power is increased by 20%-50%, and the efficiency Increase by 2-5 points, the noise will be reduced by 10%, and the temperature rise will be reduced by about 5%.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is an enlarged view of I in Figure 1.

Fig. 3 is an enlarged view of II in Fig. 1 .

Detailed ways

As shown in Fig. 1 to Fig. 3, the ultra-efficient 4-pole stator stamping of a 315 center high motor described in the utility model, the stator stamping is a circular hollow structure, and the inner diameter of the stator stamping is evenly distributed on the round edge There is a winding slot 1 extending inward, the inner diameter of the stator punch is 350 mm, and the outer diameter is 540 mm; the winding slot 1 is sequentially composed of arc edges 11, two sides 12, two hypotenuses 13 and Composed of two straight sides 14, the number is 72, the depth of the winding groove 1 is 49.7mm, the diameter of the arc side 11 is 11.8mm, the depth of the straight side 14 is 1.5mm, the connection between the two sides 12 and the arc side 11 The width of the formed slot is the same as the diameter of the arc edge 11, the width of the slot formed at the joint between the two sides 12 and the hypotenuse 13 is 8.2 mm, and the tangential angle a formed by the hypotenuse 13 and the inner diameter of the stator punch is 30 ⁰ . The groove width formed by the two straight sides 14 is 4.2mm.

Eleven fastening slots 2 and one positioning slot 3 are evenly distributed on the outer diameter circle of the stator punching sheet.

Described positioning groove 3 is made up of two hypotenuses 31, two first transverse sides 32, two straight vertical sides 33 and a second transverse side 34 inclined to both sides successively from outside to inside, hypotenuse 31 and first transverse side 32 The groove width formed at the joint is 18mm, the angle b formed by the hypotenuse 31 and the vertical line is 15°, the groove width between the two straight vertical sides 33 and the second horizontal side 34 is 4mm, and the depth is 2mm. The edge 33 is located at the center line of the positioning groove 3, and the distance between the connection between the vertical edge 33 and the first transverse edge 34 and the tangent line to the outer diameter of the stator punching sheet is 3 mm. The connection between the hypotenuse 31 and the first transverse side 32 is a circular arc transition connection with a radius of 0.5mm.

Claims (6)

1. ultra high efficiency 4 utmost point stator punchings of the high motor in center, described stator punching is circular hollow structure, be evenly distributed with the winding slot (1) that extends internally on the stator punching internal diameter round edge, it is characterized in that: described stator punching internal diameter is 350mm, and external diameter is 540mm; Described winding slot (1) is made up of circular arc limit (11), dual-side (12), two hypotenuses (13) and two straight flanges (14) from inside to outside successively, the degree of depth of winding slot (1) is 49.7mm, circular arc limit (11) diameter is 11.8mm, the degree of depth of straight flange (14) is 1.5mm, the groove width that dual-side (12) and junction, circular arc limit (11) form is identical with the diameter of circular arc limit (11), dual-side (12) is 8.2mm with the groove width that hypotenuse (13) junction forms, and hypotenuse (13) is 30 with the tangential a angle that the stator punching internal diameter forms ⁰, the groove width that two straight flanges (14) form is 4.2mm.

2. stator punching according to claim 1, it is characterized in that: described winding slot (1) quantity is 72.

3. stator punching according to claim 1 is characterized in that: be evenly equipped with binding groove (2) and location notch (3) on the described stator punching external diameter disc.

4. stator punching according to claim 3, it is characterized in that: described location notch (3) is certainly outside to inside successively by two hypotenuses (31) that tilt to both sides, two first horizontal edges (32), two straight vertical edges (33) and one second horizontal edge (34) are formed, hypotenuse (31) is 18mm with the groove width that first horizontal edge (32) junction forms, hypotenuse (31) is 15 ° with the b angle that vertical line forms, two straight vertical edges (33) are 4mm with the groove width of second horizontal edge (34), the degree of depth is 2mm, the straight vertical edge (33) in left side is in described location notch (3) position of center line, and this straight vertical edge (33) is 3mm with the spacing of first horizontal edge (34) junction and stator punching external diameter tangent line.

5. stator punching according to claim 4, it is characterized in that: described hypotenuse (31) is that arc transition is connected with first horizontal edge (32) junction, and arc radius is 0.5mm.

6. stator punching according to claim 3, it is characterized in that: described binding groove (2) quantity is 11, location notch (3) quantity is 1.

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