Integrated slot wedge, motor and air compressor

Abstract

The utility model discloses an integrated slot wedge, a motor and an air compressor, the integrated slot wedge comprises a slot wedge body, the slot wedge body is internally provided with an installation groove used for installing a winding, the slot wedge body is located in a stator groove and used for spacing the winding and a stator so as to realize insulation, and the slot wedge body is provided with a heat dissipation part. The heat dissipation part is communicated with the mounting groove and the stator groove to facilitate refrigerant flowing so as to realize heat dissipation; according to the invention, the slot wedge body of an integral structure is arranged to realize separation of the winding and the stator, so that an insulation effect is achieved, and meanwhile, the radiating part is arranged on the integral slot wedge body, so that the winding in the mounting slot on the slot wedge body is communicated with the stator slot; therefore, a refrigerant can conveniently enter the slot wedge body from the stator slot to dissipate heat of the winding in the mounting slot, heat generated by the winding is timely discharged, the cooling effect is improved, the overall temperature of the stator is further reduced, the working stability of the stator is improved, and the service life of the stator is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slot wedge, concretely relates to an integrated slot wedge and motor and air compressor. BACKGROUND

[0002] At present, the internal slot wedge insulation of motor stator generally relies on insulating slot paper, the slot paper generally contains imine film inside, although certain insulation effect is played, but the heat dissipation is not very good, the above structure easily leads to the temperature rise of motor stator, influences the normal work of motor and even reduces the service life, and the insulating slot paper structure is difficult to protect at the edge of slot, and the enameled wire is easily scratched to make the whole stator scrap.

[0003] Therefore, the prior art needs to be further improved. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, an integrated slot wedge and motor and air compressor are provided to solve the problem that the slot wedge in the prior art easily leads to the temperature rise of motor stator, influences the normal work of motor and even reduces the service life.

[0005] To achieve the above purpose, the utility model provides the following technology to achieve:

[0006] An integrated slot wedge comprises a slot wedge body, the slot wedge body is internally provided with a mounting groove for mounting a winding, the slot wedge body is located in a stator slot for spacing the winding and the stator to achieve insulation, a heat dissipation part is arranged on the slot wedge body, and the heat dissipation part is communicated with the mounting groove and the stator slot to facilitate the flow of refrigerant to achieve heat dissipation.

[0007] Further, the slot wedge body is detachably connected with the stator slot, a wire outlet is arranged on one side of the slot wedge body close to the center of the stator, and the wire outlet is communicated with the mounting groove.

[0008] Further, the slot wedge body comprises two oppositely arranged first plate bodies, the mounting groove is located between the two first plate bodies, and the first ends of the two first plate bodies are spaced apart to form the wire outlet.

[0009] Further, the slot wedge body further comprises a second plate body, and the second ends of the two first plate bodies are connected to the two sides of the second plate body to enclose the mounting groove.

[0010] Further, the second plate body is integrally formed with the first plate body, the connection between the first plate body and the second plate body is in a smooth chamfer structure, and the smooth chamfer is matched with the shape of the stator slot.

[0011] Further, the heat dissipation part comprises a first heat dissipation hole on the first plate body, the first heat dissipation hole penetrates the first plate body to communicate the mounting groove and the stator groove, and the first heat dissipation hole is arranged in an array.

[0012] Further, the heat dissipation part further comprises a first ventilation groove, the first ventilation groove is arranged on the side of the first plate body away from the mounting groove, and the first heat dissipation hole communicates the first ventilation groove and the mounting groove.

[0013] Further, the heat dissipation part further comprises a ventilation opening, the first ventilation groove is arranged along the extension direction of the mounting groove, and the ventilation opening is arranged at both ends of the first ventilation groove to facilitate the circulation of the refrigerant in the first ventilation groove.

[0014] Further, the width of the ventilation opening is smaller than the width of the first ventilation groove, and the distribution width of the first heat dissipation hole is smaller than the width of the first ventilation groove and greater than the width of the ventilation opening.

[0015] Further, the heat dissipation part further comprises a second heat dissipation hole, a second ventilation groove and a ventilation opening arranged on the second plate body, and the second heat dissipation hole communicates the second ventilation groove and the mounting groove.

[0016] Further, the side of the first plate body away from the second plate body is provided with a bending part, the shape of the bending part matches the shape of the inner wall of the stator groove, and the end of the bending part extends to the inner side of the opening of the stator groove to form a lower wire port.

[0017] Further, the groove wedge body is provided with a plurality of groove wedge bodies, and the corresponding stator grooves are arranged on the stator, and the groove wedge body is arranged in a circular array with the center of the stator as the center.

[0018] A motor comprising the groove wedge of any one of the preceding claims.

[0019] A compressor comprising the motor of any one of the preceding claims.

[0020] Compared with the prior art, the comprehensive effect brought by the utility model includes:

[0021] The application sets the groove wedge body in an integral structure, installs the groove wedge body into the stator groove, and installs the winding into the mounting groove on the groove wedge body, so that the winding is separated from the stator through the groove wedge body, thereby achieving the insulation effect, and the heat dissipation part is arranged on the integral groove wedge body, so that the winding in the mounting groove on the groove wedge body is communicated with the stator groove, thereby facilitating the refrigerant to enter the inside of the groove wedge body from the stator groove to dissipate heat for the winding, so that the heat generated by the winding is discharged in time, the cooling effect is improved, the temperature of the stator as a whole is reduced, and the working stability and service life of the stator are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the integral slot wedge overall structure schematic view of the embodiment of the utility model;

[0023] Figure 2 It is the integral slot wedge overall structure schematic view of the embodiment of the utility model; Figure 1 It is the partial structure schematic view of the embodiment of the utility model;

[0024] Figure 3 It is the schematic view of the stator installation structure of the embodiment of the utility model;

[0025] Figure 4 It is the schematic view of the stator installation structure of the embodiment of the utility model; Figure 3 It is the partial structure schematic view of the embodiment of the utility model;

[0026] Figure 5 It is the schematic view of the cooling wind flow direction of the embodiment of the utility model;

[0027] Figure 6 It is the schematic view of the stator overall structure of the embodiment of the utility model;

[0028] Figure 7 It is the schematic view of the stator overall structure of the embodiment of the utility model; Figure 6 It is the partial structure schematic view of the embodiment of the utility model.

[0029] Legend: 1, slot wedge body; 2, installation groove; 3, stator slot; 4, stator; 5, lower line port; 6, first plate body; 7, second plate body; 8, first heat dissipation hole; 9, first ventilation groove; 10, ventilation port; 11, second heat dissipation hole; 12, bending part; 13, opening. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0031] In this paper, the relationship terms such as "first" and "second" and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. The orientation or position relationship indicated by the terms "up", "down", "left", "right", "top" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0032] As Figures 1 to 7As shown, an integral slot wedge comprises a slot wedge body 1, the slot wedge body 1 is internally provided with a mounting slot 2 for mounting the winding, the slot wedge body 1 is located in the stator slot 3 for spacing the winding and the stator 4 to achieve insulation, the slot wedge body 1 is provided with a heat dissipation part, the heat dissipation part is communicated with the mounting slot 2 and the stator slot 3 to facilitate the flow of refrigerant to achieve heat dissipation.

[0033] The slot wedge body 1 is provided in an integral structure, the slot wedge body 1 is installed into the stator slot 3, and then the winding is installed into the mounting slot 2 on the slot wedge body 1, the winding is spaced apart from the stator 4 by the slot wedge body 1, thereby achieving insulation effect, and the heat dissipation part is provided on the integral slot wedge body 1, the winding in the mounting slot 2 on the slot wedge body 1 is communicated with the stator slot 3, thereby facilitating the refrigerant to enter the inside of the slot wedge body 1 from the stator slot 3 to dissipate heat for the winding in the mounting slot 2, so that the heat generated by the winding is promptly discharged, the cooling effect is improved, thereby reducing the overall temperature of the stator 4, and improving the working stability and service life of the stator 4.

[0034] In the integral slot wedge of the embodiment, the slot wedge body 1 is detachably connected with the stator slot 3, and the slot wedge body 1 is provided with a wire outlet 5 on the side close to the center of the stator 4, and the wire outlet 5 is communicated with the mounting slot 2.

[0035] Specifically, the slot wedge body 1 is detachably connected with the stator slot 3, which facilitates the assembly of the slot wedge body 1 and the winding, and facilitates the replacement of the damaged slot wedge body 1, the wire outlet 5 is provided to facilitate the winding to be embedded into the mounting slot 2 to achieve assembly with the stator 4, and the wire outlet 5 is correspondingly provided with the opening 13 of the stator slot 3, thereby facilitating the winding installation.

[0036] Preferably, the slot wedge body 1 is gap-fitted with the stator slot 3, which ensures that the slot wedge body 1 is detachably connected with the stator slot 3, and the slot wedge body 1 can be clamped in the stator slot 3 to achieve fixed connection of the slot wedge body 1 with the stator 4, thereby avoiding the slot wedge body 1 to move in the stator slot 3 to affect the insulation effect and heat dissipation effect.

[0037] Further preferably, since the wire outlet 5 is provided on the slot wedge body 1, the wire outlet 5 above the mounting slot 2 needs to be plugged after the winding embedding is completed, to prevent the copper wire from protruding to affect the normal work of the stator 4, and specifically, the traditional insulating slot paper can be used to plug the port, which cooperates with the slot wedge body 1 in the embodiment to stably position the winding.

[0038] In the integral slot wedge of the embodiment, the slot wedge body 1 comprises two oppositely arranged first plate bodies 6, the mounting slot 2 is located between the two first plate bodies 6, and the first ends of the two first plate bodies 6 are spaced apart to form the wire outlet 5.

[0039] Specifically, the two first plate bodies 6 are respectively located on the left and right sides of the mounting groove 2, and insulate between the left and right sides of the winding in the mounting groove 2 and the stator 4. The lower wire port 5 is located at the top of the first plate body 6, and the winding enters the mounting groove 2 from the gap between the two first plate bodies 6 to realize assembly.

[0040] Preferably, the slot wedge body 1 is inserted into the stator slot 3 before the winding is wired, and the paper slot wedge is used for temporary protection during wiring to ensure the safety of the copper wire. The top edge of the first plate body 6 is covered to avoid abrasion of the winding by the first plate body 6. After the copper wire is inserted, the paper slot wedge is pulled out.

[0041] In the integrated slot wedge of the embodiment, the slot wedge body 1 further comprises a second plate body 7, and the two sides of the second plate body 7 are connected to the second ends of the two first plate bodies 6 to form a mounting groove 2.

[0042] Specifically, the second plate body 7 protects the top of the mounting groove 2 to ensure the insulation effect, and the second plate body 7 is arranged opposite to the lower wire port 5 to facilitate protection of the winding entering the mounting groove 2 through the lower wire port 5 and reduce abrasion.

[0043] Through the above arrangement, the slot wedge body 1 has a U-shaped structure, and the top groove of the U-shaped structure is a mounting groove 2 for mounting the winding and separating the winding from the stator 4. The U-shaped groove structure matches the stator slot 3 to provide sufficient space for mounting the winding. The winding is accommodated and limited in the left and right directions to ensure stable assembly of the winding and the stator 4.

[0044] In the integrated slot wedge of the embodiment, the second plate body 7 is integrally formed with the first plate body 6, and the connection between the first plate body 6 and the second plate body 7 has a smooth chamfer structure. The smooth chamfer matches the shape of the stator slot 3.

[0045] Through the above arrangement, the integrated structure improves the integrity of the slot wedge body 1, facilitates processing, avoids edge abrasion of the winding at the connection of the plate body, the smooth chamfer structure avoids the winding being stuck between the first plate body 6 and the second plate body 7 to scratch the enameled wire, improves the protection effect of the slot wedge body 1 on the winding, and facilitates assembly or disassembly of the slot wedge body 1 and the stator slot 3.

[0046] Preferably, the first plate body 6 and the second plate body 7 are made of heat-resistant and heat-conductive materials, and the slot wedge body 1 itself is made of heat-resistant and heat-conductive materials, which can dissipate heat to the maximum extent and improve the heat dissipation effect.

[0047] Preferably, the first plate body 6, the second plate body 7 and the front and rear edges of the smooth chamfered corners and other contact parts with the copper wire are polished to ensure that there are no burrs and to avoid damaging the wire and causing the entire stator 4 to be scrapped, thereby improving the anti-scratching effect of the slot wedge body 1 on the winding.

[0048] Preferably, the thickness of the first plate body 6 and the second plate body 7 meets the design requirements of the slot fill factor of the corresponding stator 4 and should not be too thick to avoid affecting the normal embedding and installation of the winding due to the small installation slot 2.

[0049] In the integrated slot wedge of the embodiment, the heat dissipation part includes a first heat dissipation hole 8 on the first plate body 6, the first heat dissipation hole 8 penetrates the first plate body 6 to communicate the installation slot 2 and the stator slot 3, and the first heat dissipation hole 8 is provided in an array.

[0050] Specifically, the first heat dissipation hole 8 is arranged on the side wall of the slot wedge body 1, and the winding is arranged in the installation slot 2 along the extension direction, that is, perpendicular to the penetration direction of the first heat dissipation hole 8, so that the first heat dissipation hole 8 can increase the ventilation and heat dissipation effect of the winding in the installation slot 2 without affecting the normal insulation protection effect of the slot wedge body 1.

[0051] Preferably, the first heat dissipation hole 8 is arranged in a rectangular array on the surface of the first plate body 6, and the distribution area matches the shape of the first plate body 6. By increasing the number of first heat dissipation holes 8 through the above arrangement, the communication effect of the installation slot 2 and the stator slot 3 is increased, so that the refrigerant can smoothly enter the installation slot 2 to cool and dissipate heat for the winding.

[0052] In the integrated slot wedge of the embodiment, the heat dissipation part further includes a first ventilation groove 9, the first ventilation groove 9 is arranged on the side of the first plate body 6 away from the installation slot 2, and the first heat dissipation hole 8 communicates the first ventilation groove 9 and the installation slot 2.

[0053] Specifically, the first ventilation groove 9 increases the gap between the slot wedge body 1 and the wall of the stator slot 3, so that the refrigerant can flow between the slot wedge body 1 and the stator slot 3, thereby improving the overall heat dissipation effect of the winding and the stator 4 through heat exchange with the slot wedge body 1 in the flow process.

[0054] In addition, the gap increases the space for accommodating the refrigerant, effectively increasing the flow of the refrigerant. A large amount of refrigerant in cooperation with the structure of the first heat dissipation hole 8 can ensure that the refrigerant enters the installation slot 2 through the first ventilation groove 9 and the first heat dissipation hole 8 to effectively dissipate heat for the winding, thereby further improving the heat dissipation effect.

[0055] In the integrated slot wedge of the embodiment, the heat dissipation part further includes a ventilation port 10, the first ventilation groove 9 is arranged along the extension direction of the installation slot 2, and the ventilation port 10 is arranged at both ends of the first ventilation groove 9 to facilitate the flow of the refrigerant in the first ventilation groove 9.

[0056] The ventilation openings 10 are arranged to enable the external refrigerant to enter the first ventilation groove 9 between the slot wedge body 1 and the stator slot 3, and further enter the installation groove 2, and the ventilation openings 10 are arranged on both sides to enable the refrigerant to enter, so as to take out the heat after heat exchange, and ensure the heat dissipation cooling effect.

[0057] Specifically, after the winding is completed, cooling gas is introduced in the axial direction of the motor, and the direction is opposite to the ventilation openings 10 of the slot wedge body 1, and the cooling gas enters the first ventilation groove 9 through the ventilation openings 10, so as to achieve the purpose of cooling the whole stator 4. The cooling gas also enters the installation groove 2 from the left and right sides through the first heat dissipation holes 8 on the left and right sides to exchange heat with the copper wire, and actively ventilates the area with the worst temperature rise.

[0058] In the integrated slot wedge of the embodiment, the width of the ventilation opening 10 is smaller than the width of the first ventilation groove 9, and the distribution width of the first heat dissipation hole 8 is smaller than the width of the first ventilation groove 9 and larger than the width of the ventilation opening 10.

[0059] Through the above arrangement, the ventilation channel structure composed of the first ventilation groove 9 and the ventilation opening 10 is in a structure of thick in the middle and thin at both ends. The above structure forms a refrigerant containing cavity, so that the refrigerant can effectively stay in the first ventilation groove 9, so that the refrigerant can flow through the first heat dissipation hole 8 to dissipate heat for the winding in the installation groove 2.

[0060] In the integrated slot wedge of the embodiment, the heat dissipation part further comprises a second heat dissipation hole 11, a second ventilation groove and a ventilation opening 10 arranged on the second plate body 7, and the second heat dissipation hole 11 is communicated with the second ventilation groove and the installation groove 2.

[0061] Specifically, the second heat dissipation hole 11 is arranged in the vertical direction, and the refrigerant in the second ventilation groove enters the installation groove 2 from below to dissipate heat for the winding, and cooperates with the first heat dissipation holes 8 on the left and right sides to improve the heat dissipation and cooling effect for the winding.

[0062] In the integrated slot wedge of the embodiment, the side of the first plate body 6 away from the second plate body 7 is provided with a bending part 12, the shape of the bending part 12 matches the shape of the inner wall of the stator slot 3, and the end of the bending part 12 extends to the inside of the opening 13 of the stator slot 3 to form the lower line port 5.

[0063] The top of the two first plate bodies 6 is tapered by arranging the bending part 12, which ensures that the installation groove 2 has enough space to accommodate the winding, while reducing the width of the lower line port 5, so that the installation groove 2 has a better limiting effect on the winding, and avoids the winding from separating from the inside of the slot wedge body 1 to affect normal use.

[0064] Specifically, the bending part 12 extends to the inner side of the opening 13 of the stator slot 3, and the connection position between the slot wedge body 1 and the stator slot 3 is limited to prevent the winding at the position from contacting the stator 4, thereby ensuring the insulation effect.

[0065] In the integrated slot wedge of the embodiment, the slot wedge body 1 is provided with a plurality of corresponding stator slots 3, and the slot wedge body 1 is distributed in a circular array with the center of the stator 4 as the center.

[0066] Specifically, the lower line ports 5 of the plurality of slot wedge bodies 1 are all directed to the center of the stator 4, and the windings are respectively installed in the slot wedge bodies 1 to meet the working requirements of the stator 4.

[0067] On the other hand, the application also provides an electric machine comprising the integrated slot wedge of any one of the above embodiments, which can be expected to include all the beneficial effects of the integrated slot wedge in the above embodiments, and will not be described here.

[0068] On the other hand, the application also provides an air compressor comprising the electric machine, which can be expected to include all the beneficial effects of the electric machine, and will not be described here.

[0069] In the utility model, unless another definite provision and limitation, the terms "installation", "arrangement", "connection", "fixation", "rotation" and the like terms should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements or the interaction of two elements, unless another definite limitation, for the ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0070] Although the embodiments of the utility model have been shown and described in detail, those skilled in the art can understand that various changes, modifications, replacements and deformations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An integral groove wedge, characterized in that, The device includes a slot wedge body, which has an internal mounting slot for mounting windings. The slot wedge body is located in the stator slot to separate the windings and the stator for insulation. The slot wedge body has a heat dissipation part that connects the mounting slot and the stator slot to facilitate the flow of refrigerant for heat dissipation.

2. The integral groove wedge according to claim 1, characterized in that, The slot wedge body is detachably connected to the stator slot, and a lower wire opening is provided on the side of the slot wedge body near the center of the stator, which is connected to the mounting slot.

3. The integral groove wedge according to claim 2, characterized in that, The slot wedge body includes two opposing first plates, the mounting groove is located between the two first plates, and the first ends of the two first plates are spaced apart to form a lower opening.

4. The integral groove wedge according to claim 3, characterized in that, The groove wedge body also includes a second plate, and the two sides of the second plate are respectively connected to the second ends of the two first plates to form an installation groove.

5. The integral groove wedge according to claim 4, characterized in that, The second plate is integrally formed with the first plate, and the connection between the first plate and the second plate has a rounded chamfer structure, which matches the shape of the stator slot.

6. The integral groove wedge according to claim 3, characterized in that, The heat dissipation part includes a first heat dissipation hole located on the first plate. The first heat dissipation hole penetrates the first plate to connect the mounting slot and the stator slot. Multiple first heat dissipation holes are provided and distributed in an array.

7. The integral groove wedge according to claim 6, characterized in that, The heat dissipation part further includes a first ventilation slot, which is located on the side of the first plate away from the mounting slot, and the first heat dissipation hole connects the first ventilation slot and the mounting slot.

8. The integral groove wedge according to claim 7, characterized in that, The heat dissipation part also includes a vent. The first ventilation slot is provided along the extension direction of the mounting slot, and the vent is provided at both ends of the first ventilation slot to facilitate the flow of refrigerant within the first ventilation slot.

9. The integral groove wedge according to claim 8, characterized in that, The width of the vent is less than the width of the first ventilation slot, and the distribution width of the first heat dissipation holes is less than the width of the first ventilation slot but greater than the width of the vent.

10. The integral groove wedge according to claim 4, characterized in that, The heat dissipation unit also includes a second heat dissipation hole, a second ventilation slot, and a ventilation opening disposed on the second plate. The second heat dissipation hole is connected to the second ventilation slot and the mounting slot.

11. The integral groove wedge according to claim 4, characterized in that, The first plate has a bent portion on the side away from the second plate. The shape of the bent portion matches the shape of the inner wall of the stator slot. The end of the bent portion extends to the inside of the opening of the stator slot to form a lower wire opening.

12. The integral groove wedge according to claim 1, characterized in that, The slot wedge body is provided in a plurality of forms, and the corresponding stator slots are provided in a plurality of forms on the stator. The slot wedge bodies are arranged in a circular array with the center of the stator as the center.

13. An electric motor, characterized in that, Includes an integral groove wedge as described in any one of claims 1-12.

14. An air compressor, characterized in that, Including the motor described in claim 13.

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