阅读说明：本技术 一种每极每相槽数为8的大小槽定子冲片 (A kind of big sulculus stator punching that MgO-ZrO_2 brick is 8 ) 是由 武泽永 马利亚 吴栋民 裴良裕 于 2019-07-09 设计创作，主要内容包括：一种每极每相槽数为8的大小槽定子冲片,属于三相异步电动机技术领域,解决降低三相异步电动机的杂散损耗、降低电机的温升和噪声、提高电机效率的技术问题。解决方案为：根据电机级数在所述基片的圆环面上沿基片的圆周方向辐射状均匀布置有至少六组用于放置铜线的定子槽组,每一组所述定子槽组中每极每相槽数为8,定子槽组包括大定子槽、中定子槽和小定子槽,小定子槽的面积是大定子槽面积的80％～95％,中定子槽的面积介于大定子槽和小定子槽面积之间。本发明通过设计定子槽组中大定子槽、中定子槽和小定子槽的槽形分布,可以使槽利用率大大提高,改善定子冲片轭部磁密的分配机制。(A kind of big sulculus stator punching that MgO-ZrO_2 brick is 8, belongs to threephase asynchronous technical field, solves to reduce the stray loss of threephase asynchronous, the temperature rise of reduction motor and noise, improves the technical issues of electric efficiency.Solution are as follows: be evenly arranged at least six groups for placing the stator slot group of copper wire according to circumferencial direction of the motor series on the anchor ring of the substrate along substrate is radial, MgO-ZrO_2 brick is 8 in stator slot group described in each group, stator slot group includes big stator slot, middle stator slot and small stator slot, the area of small stator slot is the 80%~95% of big stator groove area, and the area of middle stator slot is between big stator slot and small stator groove area.The present invention can be such that slot utilization rate greatly improves, improve the distribution mechanism of stator punching yoke portion flux density by the flute profile distribution of big stator slot, middle stator slot and small stator slot in design stator slot group.)

1. the big sulculus stator punching that a kind of MgO-ZrO_2 brick is 8, it includes the substrate (1) of annulus shape, it is characterised in that: At least six have been evenly arranged according to circumferencial direction of the motor series on the anchor ring of the substrate (1) along substrate (1) is radial Group is for placing the stator slot group (2) of copper wire, and MgO-ZrO_2 brick is 8 in stator slot group (2) described in each group, stator slot group It (2) include big stator slot (26) and small stator slot (25), the area of small stator slot (25) is the 80% of big stator slot (26) area ~95%, the central angle between adjacent big stator slot (26) and small stator slot (25) is equal, big stator slot in stator slot group (2) (26) and small stator slot (25) flute profile is distributed as one or both of following flute profile distribution forms:

1), two big stator slot (26) is set to the middle part of stator slot group (2), and the two sides of two big stator slot (26) are respectively set There are three small stator slot (25), middle line pair of the small stator slot (25) of big stator slot (26) two sides about two big stator slot (26) Claim setting；

2), four big stator slot (26) is set to the middle part of stator slot group (2), and the two sides of four big stator slot (26) are respectively set There are two small stator slot (25), the two small stator slot (25) of four big stator slot (26) side and four big stator slot (26) are another The small stator slot (25) of two of side is symmetrical arranged about the middle line of four big stator slot (26)；

3), six big stator slot (26) is set to the middle part of stator slot group (2), and the two sides of six big stator slot (26) are respectively set There is one small stator slot (25), two small stator slot (25) is symmetrical arranged about the middle line of six big stator slot (26)；

The big stator slot (26) or small stator slot (25) include rectangular slot (21), the first isosceles trapezoid slot (22), the Two isosceles dovetail grooves (23) and semi-circular groove (24), one end close to substrate (1) inner headed face is set as rectangular slot (21), rectangular The width of shape slot (21) is 2.5~4.2mm, and the height of rectangular slot (21) is 0.9~2.0mm；The second isosceles trapezoid slot (23) separate center of circle one end of the first isosceles trapezoid slot (22), the upper bottom edge of the first isosceles trapezoid slot (22) and the length are set to The long side of square groove (21) is conllinear, and the upper bottom edge of the bottom of the first isosceles trapezoid slot (22) and the second isosceles trapezoid slot (23) is total Line, the width of first isosceles trapezoid slot (22) bottom are 5~10mm, the bevel edge of the first isosceles trapezoid slot (22) and bottom it Between angle be 20 °~30 °, the width of second isosceles trapezoid slot (23) bottom is 8~15mm, the second isosceles trapezoid slot (23) Height be 12~40mm；The semi-circular groove (24) is set at the bottom position of the second isosceles trapezoid slot (23), semicircle The diameter of shape slot (24) is equal with the width of second isosceles trapezoid slot (23) bottom.

2. the big sulculus stator punching that a kind of MgO-ZrO_2 brick according to claim 1 is 8, it is characterised in that: described Be additionally provided in stator slot group (2) middle stator slot (27), the area of middle stator slot (27) between small stator slot (25) area with Between big stator slot (26) area, the central angle between adjacent big stator slot (26), small stator slot (25) and middle stator slot (27) It is equal；The flute profile of big stator slot (26), small stator slot (25) and middle stator slot (27) is distributed as following slots in stator slot group (2) One or both of shape distribution form:

1), four big stator slot (26) is set to the middle part of stator slot group (2), and the two sides of stator slot group (2) are respectively arranged with two The small stator slot (25) of a small stator slot (25), stator slot group (2) two sides is symmetrically set about the middle line of four big stator slot (26) It sets, two middle stator slots (27) are symmetrically arranged between the small stator slot (25) of big stator slot (26) and two sides；

2), two big stator slot (26) is set to the middle part of stator slot group (2), and the two sides of stator slot group (2) are respectively arranged with one The small stator slot (25) of a small stator slot (25), two sides is symmetrical arranged about the middle line of four big stator slot (26), fixed in two Pilot trench (27) is respectively arranged between big stator slot (26) and the small stator slot (25) of two sides, and two middle stator slots (27) also relate to The middle line of four big stator slot (26) is symmetrical arranged.

3. the big sulculus stator punching that a kind of MgO-ZrO_2 brick according to claim 1 is 8, it is characterised in that: in institute It states the circumferencial direction on the periphery of substrate (1) along substrate (1) and is evenly arranged 8~16 cramp slots (3) for being used to install cramp, The bottom of the cramp slot (3) is set as straight line, and the upper bottom edge of cramp slot (3) is naturally open along the circumferencial direction of substrate (1), The bottom of any one cramp slot (3) is arranged reasonable film trap (4) wherein, the shape of reason film trap (4) be rectangle or It is trapezoidal.

4. the big sulculus stator punching that a kind of MgO-ZrO_2 brick according to claim 3 is 8, it is characterised in that: described The width of cramp slot (3) is 14~25mm, is highly 3~5mm, angle of the cramp slot (3) between bevel edge and bottom edge be 15 °~ 25°。

5. the big sulculus stator punching that a kind of MgO-ZrO_2 brick according to claim 1 is 8, it is characterised in that: described Big stator slot and small stator slot in stator slot group (2) radiate on the inner circle anchor ring of substrate (1) along the circumferencial direction of substrate (1) Shape has been evenly arranged 24 × n, and wherein n is the number of poles of motor.

Technical field

The invention belongs to threephase asynchronous technical fields, and in particular to be a kind of MgO-ZrO_2 brick be 8 it is big Sulculus stator punching.

Background technique

Threephase asynchronous includes five lossies, i.e. stator copper loss, rotor copper loss, core loss, mechanical consumption and miscellaneous Dissipate loss.In order to make electric efficiency reach the different brackets such as efficient, ultra high efficiency, super ultra high efficiency, those skilled in the art are to items Loss, which classifies, to be analyzed and is judged, countermeasure is taken to reduce loss.

Stator coil uses not equal circles low harmonic winding form, and the actual resistance of winding can not only reduced, reaches reduction The purpose of stator copper loss, and the harmonic wave of different the number of turns is analyzed, judged and selected, thus effectively reduce motor due to The stray loss that harmonic wave generates.In face of the different numerical value of every coil turn, the same flute profile of stator punching can cause different slots full Rate.Big sulculus punching design is come into being as a result,.On the one hand in order to optimize embedding technology, keep the copper factor in each slot basic Unanimously, effective to improve embedding quality；On the other hand the corresponding not yoke portion size of the big sulculus of same punching is miscellaneous for reducing motor Dissipate loss and motor temperature rise, reduce noise etc., further refinement is needed by careful design and test.

Summary of the invention

It is an object of the invention to develop and improve the technical level of existing stator punching groove design, three are effectively reduced The stray loss of phase asynchronous motor reduces temperature rise and the noise of motor, improves electric efficiency.The present invention provides every grade of one kind often The big sulculus stator punching that phase slot number is 7.

The present invention is achieved by the following technical programs.

A kind of big sulculus stator punching that MgO-ZrO_2 brick is 8, it includes the substrate of annulus shape, in which: according to electricity Circumferencial direction of the machine series on the anchor ring of the substrate along substrate is radial to be evenly arranged at least six groups for placing copper The stator slot group of line, MgO-ZrO_2 brick is 8 in stator slot group described in each group, and stator slot group includes big stator slot and small stator Slot, the area of small stator slot are the 80%~95% of big stator groove area, the center of circle between adjacent big stator slot and small stator slot Angle is equal, and big stator slot and small stator slot flute profile are distributed as one of following flute profile distribution forms or two in stator slot group Kind:

1), two big stator slot is set to the middle part of stator slot group, there are three the two sides of two big stator slot are respectively set The small stator slot of small stator slot, big stator slot two sides is symmetrical arranged about the middle line of two big stator slot；

2), four big stator slot is set to the middle part of stator slot group, there are two the two sides of four big stator slot are respectively set Two small stator slots of small stator slot, two small stator slots of four big stator slot side and the four big stator slot other side about The middle line of four big stator slot is symmetrical arranged；

3), six big stator slot is set to the middle part of stator slot group, and the two sides of six big stator slot are respectively arranged with one Small stator slot, two small stator slots are symmetrical arranged about the middle line of six big stator slot；

The big stator slot or small stator slot include rectangular slot, the first isosceles trapezoid slot, the second isosceles trapezoid slot And semi-circular groove, it is set as rectangular slot close to one end of substrate inner headed face, the width of rectangular slot is 2.5~4.2mm, rectangular The height of shape slot is 0.9~2.0mm；The second isosceles trapezoid slot is set to separate center of circle one end of the first isosceles trapezoid slot, The upper bottom edge of first isosceles trapezoid slot is conllinear with the long side of the rectangular slot, the bottom and second etc. of the first isosceles trapezoid slot The upper bottom edge of waist dovetail groove is conllinear, and the width of the first isosceles trapezoid slot bottom is 5~10mm, the bevel edge of the first isosceles trapezoid slot Angle between bottom is 20 °~30 °, and the width of the second isosceles trapezoid slot bottom is 8~15mm, the second isosceles trapezoid The height of slot is 12~40mm；The semi-circular groove is set at the bottom position of the second isosceles trapezoid slot, semi-circular groove Diameter is equal with the width of the second isosceles trapezoid slot bottom.

Further, middle stator slot is additionally provided in the stator slot group, the area of middle stator slot is between small stator slot Between area and big stator groove area, the central angle between adjacent big stator slot, small stator slot and middle stator slot is equal；Stator The flute profile of big stator slot, small stator slot and middle stator slot is distributed as one or both of following flute profile distribution forms in slot group:

1), four big stator slot is set to the middle part of stator slot group, and the two sides of stator slot group are respectively set that there are two small fixed The small stator slot of pilot trench, stator slot group two sides is symmetrical arranged about the middle line of four big stator slot, and two middle stator slots are right respectively Title is set between big stator slot and the small stator slot of two sides；

2), two big stator slot is set to the middle part of stator slot group, the two sides of stator slot group be respectively arranged with one it is small fixed The small stator slot of pilot trench, two sides is symmetrical arranged about the middle line of four big stator slot, and two middle stator slots are respectively arranged at big fixed Between pilot trench and the small stator slot of two sides, the middle line that two middle stator slots also relate to four big stator slot is symmetrical arranged.

Further, the circumferencial direction on the periphery of the substrate along substrate is evenly arranged 8~16 for installing The cramp slot of cramp, the bottom of the cramp slot are set as straight line, and the upper bottom edge of cramp slot is natural along the circumferencial direction of substrate Reasonable film trap is arranged in the bottom of wherein any one cramp slot in opening, and the shape of the reason film trap is rectangle or trapezoidal.

Further, the width of the cramp slot is 14~25mm, is highly 3~5mm, between cramp slot bevel edge and bottom edge Angle be 15 °~25 °.

Further, the big stator slot in the stator slot group and small stator slot are on the inner circle anchor ring of substrate along substrate Circumferencial direction is radial to be evenly arranged 21 × n, and wherein n is the number of poles of motor.

Compared with prior art the invention has the benefit that

The big sulculus stator punching that a kind of MgO-ZrO_2 brick provided by the invention is 8, for not waiting embedding of circles coil Craftsmanship and embedding increased quality are larger, and for promoting the efficiency of motor, improvement starts, it is significant to reduce noise of motor.It can So that slot utilization rate greatly improves, improve the distribution mechanism of stator punching yoke portion flux density.It reduces the stray loss of motor, improve electricity The starting performance of machine reduces the temperature rise of motor, improves the efficiency of motor, saves the overall cost of motor.

Detailed description of the invention

Fig. 1 is the size stator slot overall structure diagram of embodiment one.

Fig. 2 is that the IIIth part is cramp slot and reason film trap partial enlargement structural representation in Fig. 1.

Fig. 3 is the size stator slot overall structure diagram of embodiment two.

Fig. 4 is the size stator slot overall structure diagram of embodiment three.

After Fig. 5 is part i in Fig. 4 (either Fig. 1 or Fig. 3) and the IIth part partial enlargement and projected position overlapping Flute profile comparative structure schematic diagram, two-dot chain line is small stator slot flute profile wheel profile in figure.

Fig. 6 is the size stator slot overall structure diagram of example IV.

Fig. 7 is the size stator slot overall structure diagram of embodiment five.

After Fig. 8 is part i, the IIth part and the IVth part partial enlargement in Fig. 7 (or Fig. 6) and projected position overlapping Flute profile comparative structure schematic diagram, two-dot chain line is small stator slot flute profile wheel profile in figure, and dotted line is middle stator slot channel shaped configuration Line.

In figure, 1 is substrate, and 2 be stator slot group, and 21 be rectangular slot, and 22 be the first isosceles trapezoid slot, and 23 be the second isosceles Dovetail groove, 24 be semi-circular groove, and 25 be small stator slot, and 26 be big stator slot, and 27 be middle stator slot, and 3 be cramp slot, and 4 be reason piece Slot.

Specific embodiment

The present invention is described in further detail with reference to the accompanying drawings and examples.