Stator punching sheet for refrigerator compressor motor

Abstract

The utility model relates to a stator punching sheet for refrigerator compressor motor, which includes a punching sheet body, a stator hole is opened in the center of the punching sheet body, and a plurality of slots for embedding enameled wires are arranged around the stator hole, and the slot shape of the slot is a flat bottom slot shape. The punching sheet body includes a left end face, a right end face and a top end face, and the left end face is symmetrically arranged relative to the right end face; the left end face, the right end face and the top end face are all planes; an arc surface is symmetrically provided on the left and right sides of the lower part of the punching sheet body, and the lower ends of the two arc surfaces are respectively connected to the bottom end face, and the bottom end face is a plane, and the upper ends of the arc surfaces on the same side are connected to the lower end of the left end face or the lower end of the right end face. The product has a simple structure and is easy to maintain. A small sheet-shaped stator is used to fully utilize the internal space of the compressor and achieve the purpose of reducing the volume of the compressor. The material cost of the compressor can be saved.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing refrigerator compressor motor stators, in particular to a stator punching sheet used for refrigerator compressor motors. Background Art

[0002] At present, the purchase prices of major raw materials such as silicon steel, copper, and aluminum for refrigerator compressor motors remain high. Existing refrigerator compressor motor manufacturers will optimize product structure design and reduce production costs as the main direction of technical research.

[0003] In order to reduce cost pressure, enterprises design miniaturized punching sheets to improve the material utilization rate of silicon steel sheets. At present, the material utilization rate of silicon steel sheets in the motor industry is 50% to 64%. Every percentage point increase in the material utilization rate of silicon steel sheets will enable enterprises to obtain considerable economic benefits. At the same time, the slot shape on the stator punching sheet is improved and the slot area is reduced to improve the utilization rate of silicon steel sheets and reduce the material used for enameled wire.

[0004] In addition, the refrigerator and freezer compressor industry has been extremely competitive in recent years, and companies have tried every means to improve product quality and reduce product costs to enhance product competitiveness. The motor is the core component of the compressor. Refrigerator compressors are becoming increasingly miniaturized and energy-efficient, and the size of the motor determines the size of the compressor. Therefore, a stator punching that can adapt to increasingly miniaturized compressors and motors is needed. Utility Model Content

[0005] In view of the above technical problems in the related technology, the utility model proposes a stator punching sheet for a refrigerator compressor motor, which can overcome the above shortcomings of the prior art, and can be operated more flexibly while achieving higher stability of robot communication, and at the same time achieves that the running speed of the robot in the pipeline is completely consistent with the automatic retraction and extension speed of the pipeline.

[0006] In order to achieve the above technical objectives, the technical solution of the utility model is implemented as follows:

[0007] The stator punching sheet involved in the utility model comprises a punching sheet body, a stator hole is opened in the center of the punching sheet body, and a plurality of slots for embedding enameled wires are arranged around the stator hole, and the slots are flat-bottomed. The connection method between the enameled wire and the plug strip is the prior art, and the plug strip is composed of a wire and a socket, which is also the prior art.

[0008] Furthermore, the punch body comprises a left end face, a right end face and a top end face, the left end face and the right end face are symmetrically arranged relative to each other; the left end face, the right end face and the top end face are all planes;

[0009] An arc surface is symmetrically provided on the left and right sides of the lower part of the punch body, and the lower ends of the two arc surfaces are respectively connected to the bottom end surface. The bottom end surface is a plane, and the upper end of the arc surface on the same side is connected to the lower end of the left end surface or the lower end of the right end surface.

[0010] Furthermore, the upper end of the left end surface and the upper end of the right end surface are connected to the left and right ends of the top end surface through an inclined surface respectively, and the two inclined surfaces are arranged opposite to each other and are planes.

[0011] Furthermore, the angles between the left end face, the right end face and the adjacent inclined faces are 135°, and the angle between the inclined faces and the top end face is also 135°.

[0012] Furthermore, three stator mounting holes are provided on the punching sheet body, one of which is located above the bottom end surface, and the other two stator mounting holes are symmetrically arranged and respectively adjacent to the inclined surfaces on the left and right sides.

[0013] Furthermore, the bottom surface width is preferably between 9±0.01 mm.

[0014] Furthermore, the lateral distance between the left end face and the right end face is preferably between 74±0.01mm, that is, the width of the punch body is preferably between 74±0.01mm; the longitudinal distance between the top end face and the bottom end face is preferably between 91±0.01mm, that is, the height of the punch body is preferably between 91±0.01mm; and the top end face width is preferably between 61±0.01mm.

[0015] Furthermore, the arc surface includes a first arc surface and a second arc surface, the lower end of the first arc surface is connected to the upper end of the second arc surface, and the lower end of the second arc surface is connected to the bottom end surface; wherein, the first arc surface is located on a virtual circle with a radius R and a center of the stator hole as the center, and R is preferably between 45.18±0.01 mm.

[0016] Furthermore, the distance between any two adjacent slots is preferably between 2.7±0.01 mm, and the diameter of the stator hole is preferably between 44.55±0.01 mm.

[0017] Furthermore, the lateral distance between the slots on the left and right sides and the left and right end edges of the punch body is preferably between 8.25±0.02 mm.

[0018] Furthermore, the number of the slots is preferably 24, preferably in 4 sizes. The number and size of the slots can be achieved by existing technology.

[0019] The beneficial effects of this design are as follows: This product has a simple structure and is easy to maintain. It uses a small-piece stator to fully utilize the internal space of the compressor, thereby reducing the size of the compressor and saving the cost of the compressor material.

[0020] Compared with the existing ASV35Y, the core stack height is 30mm, the stator size is 84*92.5*75, and the stator inner hole is 50.10mm, which cannot adapt well to the trend of miniaturization of compressor motors. However, after adopting this product, the following specifications can be easily achieved: core stack height 26mm, stator size 77*91*71, stator inner hole 44.50mm, new sheet shape, silicon steel and enameled wire are reduced on the original basis, the compressor pump body will also be reduced, and the refrigerator compressor can also be miniaturized. Energy saving and emission reduction are achieved, and market competitiveness is improved.

[0021] The original motor core stack height was 30mm, the stator size was 84*92.5*75, and the stator inner hole was 50.10mm. After adopting the new sheet shape, the core stack height was 26mm (reduced by 4mm), the stator size was 77*91*71, and the stator inner hole was 44.50mm, which effectively reduced the use of silicon steel, enameled wire, and aluminum. Moreover, after multiple vertical assembly of this product, the height occupied by two vertically adjacent punching sheet bodies is only about 167mm, which further saves space compared to the existing technology, thereby saving more material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described in detail below with reference to the accompanying drawings.

[0023] Figure 1 It is a front view of the stator punching sheet described in the embodiment of the utility model.

[0024] Figure 2 It is a schematic diagram of the flat bottom groove shape of the slot hole described in the embodiment of the utility model.

[0025] Figure 3 The main view of the stator punching sheet described in the embodiment of the utility model Figure 2 .

[0026] Figure 4 It is a schematic diagram of the arc surface, the first arc surface, and the second arc surface described in the embodiment of the utility model.

[0027] Figure 5 It is an assembly diagram of the stator punching sheet described in the embodiment of the utility model.

[0028] Figure 6 It is a schematic diagram of multiple stator punching sheets arranged together according to an embodiment of the utility model.

[0029] Figure 7 This is a schematic diagram of the modeling of the stator punching sheet described in the embodiment of the utility model Figure 1 .

[0030] Figure 8 This is a schematic diagram of the modeling of the stator punching sheet described in the embodiment of the utility model Figure 2 .

[0031] Fig. 9 It is a structural schematic diagram of an existing stator punching sheet.

[0032] Fig.10 This is a schematic diagram of the structure of the existing stator punching Figure 2 .

[0033] In the figure: 1, punching sheet body; 101, stator mounting hole; 102, left end surface; 103, right end surface; 104, inclined surface; 105, top end surface; 106, arc surface; 1061, first arc surface; 1062, second arc surface; 107, bottom end surface; 2, stator hole; 201, slot hole; 3, enameled wire; 4, extension strip; 401, wire; 402, socket. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of the embodiments. Any modifications, equivalent substitutions, improvements, etc. made by ordinary technicians in this field within the spirit and principles of the utility model should be included in the protection scope of the utility model and belong to the protection scope of the utility model.

[0035] like Figure 1-10 As shown, in order to facilitate understanding of the above technical solution of the present invention, the above technical solution of the present invention is described in detail below through specific usage methods.

[0036] In specific use, the stator punching sheet described in the utility model includes a punching sheet body 1, a stator hole 2 is opened in the center of the punching sheet body 1, and a plurality of slots 201 for embedding the enameled wire 3 are arranged around the stator hole 2, and the slot shape of the slot 201 is a flat-bottomed slot shape. The connection method of the enameled wire 3 and the plug strip 4 is the existing technology, and the plug strip 4 is composed of a wire 401 and a socket 402, which is also the existing technology. The enameled wire 3 passes through the outer end of the slot 201 and is connected to the plug strip 4, so as to obtain power supply.

[0037] In a specific embodiment, the punch body 1 includes a left end surface 102, a right end surface 103 and a top end surface 105, wherein the left end surface 102 and the right end surface 103 are symmetrically arranged relative to each other; the left end surface 102, the right end surface 103 and the top end surface 105 are all planes;

[0038] An arc surface 106 is symmetrically provided on the left and right sides of the lower part of the punch body 1, and the lower ends of the two arc surfaces 106 are respectively connected to the bottom end surface 107, and the bottom end surface 107 is a plane. The upper end of the arc surface 106 on the same side is connected to the lower end of the left end surface 102 or the lower end of the right end surface 103.

[0039] In a specific embodiment, the upper end of the left end surface 102 and the upper end of the right end surface 103 are connected to the left and right ends of the top end surface 105 through an inclined surface 104 respectively, and the two inclined surfaces 104 are arranged opposite to each other and are planes.

[0040] In a specific embodiment, the angles between the left end surface 102 and the right end surface 103 and the adjacent inclined surface 104 are 135°, and the angle between the inclined surface 104 and the top end surface 105 is also 135°.

[0041] In a specific embodiment, three stator mounting holes 101 are provided on the punch body 1, one of the stator mounting holes 101 is located above the bottom end surface 107, and the other two stator mounting holes 101 are symmetrically arranged and respectively adjacent to the inclined surfaces 104 on the left and right sides.

[0042] In a specific embodiment, the width of the bottom end surface 107 is preferably between 9±0.01 mm.

[0043] In a specific embodiment, the lateral distance between the left end face 102 and the right end face 103 is preferably between 74±0.01mm, that is, the width of the punch body 1 is preferably between 74±0.01mm; the longitudinal distance between the top end face 105 and the bottom end face 107 is preferably between 91±0.01mm, that is, the height of the punch body 1 is preferably between 91±0.01mm; the width of the top end face 105 is preferably between 61±0.01mm.

[0044] In a specific embodiment, the arc surface 106 includes a first arc surface 1061 and a second arc surface 1062, the lower end of the first arc surface 1061 is connected to the upper end of the second arc surface 1062, and the lower end of the second arc surface 1062 is connected to the bottom end surface 107; wherein, the first arc surface 1061 is located on a virtual circle with a radius R and a center of the stator hole 2 as the center, and R is preferably between 45.18±0.01mm.

[0045] In a specific embodiment, the distance between each two adjacent slots 201 is preferably between 2.7±0.01 mm, and the diameter of the stator hole 2 is preferably between 44.55±0.01 mm.

[0046] In a specific embodiment, the lateral distance between the slots 201 located on the left and right sides and the left and right end edges of the punch body 1 is preferably between 8.25±0.02 mm.

[0047] In a specific embodiment, the number of the slots 201 is preferably 24, preferably in 4 sizes. The number and size of the slots 201 can be achieved by existing technology.

[0048] Specific working principle: This product provides a stator punching sheet for refrigerator compressor motors with a power range of 30-70W. The punching sheet adopts a staggered and interlaced punching method to achieve economical cutting of silicon steel sheets and improve the utilization rate of silicon steel sheets. The punching sheet uses a flat-bottomed groove design structure to effectively increase the yoke distance and increase the slot hole margin, thereby reducing the amount of raw materials used for motor winding enameled wire and silicon steel sheet punching sheets.

[0049] In the early stage of this product, SolidWorks Premium can be used to assist in the design of a motor stator punching sheet through 3D simulation. The center of the punching sheet has a rotor hole, and the 24 slots embedded with enameled wires are circularly surrounded by the outside of the rotor center hole. The slots of 8 groups, 1 large slot and 2 small slots, are evenly distributed. The shape of the punching sheet is a three-hole structure, which effectively reduces the punching sheet area; at the same time, the slot shape is designed as a flat-bottomed slot shape, which can increase the punching sheet design margin, increase the motor stator slot full rate, and effectively improve product efficiency. This small motor punching sheet has a simple structure and can reduce costs by about 10%, and can be widely promoted in the refrigerator compressor motor manufacturing industry.

[0050] The original motor core stack height was 30mm, the stator size was 84*92.5*75, and the stator inner hole was 50.10mm. After adopting the new sheet shape, the core stack height was 26mm (reduced by 4mm), the stator size was 77*91*71, and the stator inner hole was 44.50mm, which effectively reduced the use of silicon steel, enameled wire, and aluminum.

[0051] In summary, this product adopts the above unique design, has a simple structure, is easy to maintain, and uses a small-sheet stator to fully utilize the internal space of the compressor, thereby reducing the volume of the compressor. It can save the material cost of the compressor; and after multiple vertical assemblies of this product, the height occupied by two vertically adjacent punching sheet bodies is only about 167 mm, which further saves space compared to the existing technology, thereby saving more material costs.

[0052] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. A stator punching sheet for a refrigerator compressor motor, comprising a punching sheet body (1), a stator hole (2) being formed in the center of the punching sheet body (1), a plurality of slots (201) for embedding enameled wires (3) being formed around the stator hole (2), and characterized in that: The slot shape of the slot hole (201) is a flat-bottomed slot shape.

2. The stator sheet according to claim 1, characterized in that: The punch body (1) comprises a left end surface (102), a right end surface (103) and a top end surface (105), wherein the left end surface (102) and the right end surface (103) are symmetrically arranged relative to each other; the left end surface (102), the right end surface (103) and the top end surface (105) are all planes; An arcuate surface (106) is symmetrically provided on the left and right sides of the lower part of the punch body (1), and the lower ends of the two arcuate surfaces (106) are respectively connected to the bottom end surface (107), and the bottom end surface (107) is a plane. The upper end of the arcuate surface (106) on the same side is connected to the lower end of the left end surface (102) or the lower end of the right end surface (103).

3. The stator sheet according to claim 2, characterized in that: The upper ends of the left end surface (102) and the right end surface (103) are respectively connected to the left and right ends of the top end surface (105) via an inclined surface (104), and the two inclined surfaces (104) are arranged opposite to each other and are planes.

4. The stator sheet according to claim 3, characterized in that: The angles between the left end surface (102) and the right end surface (103) and the adjacent inclined surface (104) are 135°, and the angle between the inclined surface (104) and the top end surface (105) is also 135°.

5. The stator sheet according to claim 3, characterized in that: The punching sheet body (1) is provided with three stator mounting holes (101), one of the stator mounting holes (101) is located above the bottom end surface (107), and the other two stator mounting holes (101) are symmetrically arranged and respectively adjacent to the inclined surfaces (104) on the left and right sides.

6. The stator sheet according to claim 2, characterized in that: The bottom end surface (107) has a width of 9±0.01 mm.

7. The stator sheet according to claim 2, characterized in that: The lateral distance between the left end face (102) and the right end face (103) is between 74±0.01mm, that is, the width of the punch body (1) is between 74±0.01mm; the longitudinal distance between the top end face (105) and the bottom end face (107) is between 91±0.01mm, that is, the height of the punch body (1) is between 91±0.01mm; the width of the top end face (105) is between 61±0.01mm.

8. The stator sheet according to claim 2, characterized in that: The arc surface (106) comprises a first arc surface (1061) and a second arc surface (1062), wherein the lower end of the first arc surface (1061) is connected to the upper end of the second arc surface (1062), and the lower end of the second arc surface (1062) is connected to the bottom end surface (107); wherein the first arc surface (1061) is located on a virtual circle with a center of the stator hole (2) as the center and a radius R, and R is between 45.18±0.01 mm.

9. The stator sheet according to claim 1, characterized in that: The distance between any two adjacent slot holes (201) is between 2.7±0.01 mm, and the diameter of the stator hole (2) is between 44.55±0.01 mm.

10. The stator sheet according to claim 1, characterized in that: The lateral distance between the slots (201) located on the left and right sides and the left and right end edges of the punch body (1) is between 8.25±0.02 mm.

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