A high temperature resistant multi-layer insulation stator structure

Abstract

The utility model discloses a kind of high-temperature-resistant multilayer heat-insulating stator structures, including stator core, stator core middle is equipped with several through-line slots, the two through-line slots between adjacent are equipped with clamping tooth, the two ends of stator core are symmetrically equipped with heat conduction compression ring, two heat conduction compression rings are equipped with heat-insulating shell, heat-insulating shell non-contact type surrounds stator core outside, two heat conduction compression rings and heat-insulating shell are equipped with several corresponding perforations, bolt is equipped in perforation, the end portion of bolt is equipped with nut, the inside of two heat conduction compression rings is equipped with several insertion slots, stator core is equipped with the through-hole corresponding to the position of several insertion slots, heat conduction rod is inserted into through-hole, the both ends of heat conduction rod extend to the outside of through-hole, and are inserted into corresponding insertion slot with both ends, the outside of two heat conduction compression rings is equipped with several radiating fins, the utility model passes through heat conduction rod and heat conduction compression ring and transmits the heat of stator core to radiating fin, heat is dissipated to outside using air convection, ensure the high-temperature-resistant performance of stator core.

Description

Technical Field

[0001] This utility model relates to the field of motor stator technology, specifically a high-temperature resistant multi-layer heat-insulating stator structure. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy (usually rotational motion). One of its core components is the stator, which is the stationary part of the motor. The stator typically consists of an iron core and coils (windings) wound around it. When current is applied, the stator windings generate an electromagnetic field. This electromagnetic field interacts with the rotating part of the motor (rotor), producing torque (rotational force), which drives the rotor to rotate and output mechanical power. It is the core power source for many mechanical devices.

[0003] However, during the operation of an electric motor, energy loss occurs as the current passes through the windings to generate an electromagnetic field. Factors such as copper loss, iron loss, and mechanical friction cause a large amount of heat to be generated inside the motor. If this heat cannot be dissipated in a timely and effective manner, the internal temperature of the motor will continue to rise, which will damage the winding insulation material, accelerate aging, and may even lead to short circuits or burnout. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant multilayer thermal insulation stator structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-temperature resistant multilayer thermally insulated stator structure includes a stator core. The stator core has several through-slots in the middle, with retaining teeth between adjacent through-slots. Symmetrically arranged thermally conductive pressure rings are provided at both ends of the stator core. A thermally insulating shell is provided between two thermally conductive pressure rings, non-contactly surrounding the outside of the stator core. Several corresponding through holes are provided on the two thermally conductive pressure rings and the thermally insulating shell. Bolts are installed in the through holes, and nuts are fitted onto the ends of the bolts. Several slots are provided on the inner sides of both thermally conductive pressure rings. Through holes corresponding to the positions of the slots are provided on the stator core. A thermally conductive rod is inserted into the through hole, with both ends extending to the outside of the through hole and engaging with the corresponding slots at both ends. Several heat dissipation fins are provided on the outer sides of both thermally conductive pressure rings.

[0007] Furthermore, a heat dissipation strip is inserted into the heat dissipation fins, and the heat dissipation strip is made of thermally conductive silicone.

[0008] Furthermore, the areas where the heat-conducting rod contacts the through-hole and the areas where it contacts the slot are both coated with thermally conductive silicone grease.

[0009] Furthermore, the inner section of the bolt has a smooth surface, and the end that connects to the nut has threads.

[0010] Furthermore, the heat insulation shell includes a heat insulation shell, the perforation is provided on the heat insulation shell, the heat insulation shell is covered with an aerogel layer, the outer side of the aerogel layer is wrapped with an aluminum foil tape layer, and the outer side of the aluminum foil tape is covered with an outer protective layer.

[0011] Furthermore, the outer protective layer is an aluminum foil layer.

[0012] Furthermore, the heat insulation shell has annular grooves at both ends, and a high-temperature resistant sealing ring is fixed in the annular groove. The other side of the sealing ring abuts against the heat-conducting pressure ring.

[0013] The beneficial effects of this utility model are:

[0014] This invention features several slots on the inner sides of two heat-conducting pressure rings, and through holes on the stator core corresponding to the slot positions. Heat-conducting rods are inserted into these through holes, with both ends extending to the outside of the through holes and engaging with their corresponding slots. This allows heat generated inside the stator core to be transferred to the two heat-conducting pressure rings via the heat-conducting rods. Several heat-dissipating fins are provided on the outer sides of both heat-conducting pressure rings, dissipating heat to the external environment through air convection. This reduces the temperature of the stator core, ensuring its high-temperature resistance, and promptly dissipating internal heat to prevent heat accumulation and temperature rise, which could affect the normal operation of the equipment.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] Figure 1 : Overall structural diagram of this utility model.

[0017] Figure 2 : Exploded view of this utility model.

[0018] Figure 3 : A structural diagram of the heat-insulating outer shell of this utility model.

[0019] Reference numerals: 1. Stator core; 2. Thermally conductive pressure ring; 3. Thermal insulation shell; 4. Bolt; 6. Thermally conductive rod; 11. Through-hole; 12. Clamping tooth; 13. Through hole; 21. Perforation; 22. Slot; 23. Heat dissipation fins; 24. Heat dissipation strip; 31. Thermal insulation shell; 32. Aerogel layer; 33. Aluminum foil tape layer; 34. Outer protective layer; 35. Annular groove; 36. Sealing ring; 41. Nut. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please refer to Figure 1-3 ;

[0022] A high-temperature resistant multi-layer heat-insulating stator structure includes a stator core 1. The stator core 1 has several wire-passing grooves 11 in its center, and a retaining tooth 12 is provided between adjacent wire-passing grooves 11. The wire-passing grooves 11 are distributed in a ring with equal spacing. The retaining teeth 12 are integrally formed with the stator core 1. The wire-passing grooves 11 and retaining teeth 12 cooperate to wind corresponding wire groups. Symmetrically arranged heat-conducting pressure rings 2 are provided at both ends of the stator core 1. A heat-insulating shell 3 is provided between two heat-conducting pressure rings 2. The heat-insulating shell 3 non-contactly surrounds the outside of the stator core 1, isolating external heat and preventing external heat from being transferred to the internal stator core 1, thus protecting the internal structure from high temperatures. Several corresponding through holes 21 are provided on the two heat-conducting pressure rings 2 and the heat-insulating shell 3. Bolts 4 are installed in the through holes 21, and nuts 41 are fitted onto the ends of the bolts 4. Multiple stator cores 1 are fixed together through the cooperation of the bolts 4 and nuts 41. Both heat-conducting pressure rings 2 have several slots 22 on their inner sides. The stator core 1 has through holes 13 corresponding to the positions of the slots 22. A heat-conducting rod 6 is inserted into the through hole 13. Both ends of the heat-conducting rod 6 extend to the outside of the through hole 13 and are inserted into the slots 22 corresponding to both ends. Preferably, the inner diameter of the slot 22 is adapted to the diameter of the heat-conducting rod 6, and the diameter of the through hole 13 is adapted to the diameter of the heat-conducting rod 6, so as to ensure that the heat-conducting rod 6 has good thermal conductivity with the stator core 1 and the heat-conducting pressure rings 2, so that the heat generated inside the stator core 1 can be transferred to the two heat-conducting pressure rings 2 through the heat-conducting rod 6. Both heat-conducting pressure rings 2 have several heat dissipation fins 23 on their outer sides. Preferably, the heat dissipation fins 23 are made of aluminum alloy. The heat absorbed by the heat-conducting pressure rings 2 is transferred to the heat dissipation fins 23. The heat dissipation fins 23 dissipate the heat to the external environment through air convection, thereby reducing the temperature of the stator core 1, ensuring the high temperature resistance of the stator core 1, dissipating internal heat in time, and avoiding the temperature rise caused by heat accumulation, which would affect the normal operation of the equipment.

[0023] During installation, first, manually arrange multiple stator cores 1 sequentially inside a heat-conducting pressure ring 2. Then, pass the heat-conducting rods 6 sequentially through the through holes 13 on the stator cores 1 and insert them into the corresponding slots 22 of the heat-conducting pressure ring 2. Next, install the heat insulation shell 3 so that it surrounds the outside of the stator cores 1 in a non-contact manner. Then, install another heat-conducting pressure ring 2 at the other end of the stator core 1 group. After that, use bolts 4 to sequentially pass through the corresponding through holes 21 on the two heat-conducting pressure rings 2 and the heat insulation shell 3, and tighten the nuts 41 at the ends of the bolts 4 for fixation. Finally, the user manually winds the wire group to be wound sequentially between the wire groove 11 and the retaining teeth 12.

[0024] Since the heat dissipation fins 23 are typically made of thin, sharp-edged aluminum alloy, there is a risk of scratching the skin of workers during operation. Therefore, heat dissipation strips 24, made of thermally conductive silicone, are inserted into the heat dissipation fins 23. The thermally conductive silicone has a certain degree of elasticity, ensuring excellent thermal conductivity and heat dissipation while preventing the thin, sharp heat dissipation fins 23 from scratching the skin of workers.

[0025] In this embodiment, the areas where the heat-conducting rod 6 contacts the through hole 13 and the areas where it contacts the slot 22 are both coated with thermally conductive grease. Specifically, even if the slot 22 and the through hole 13 are perfectly matched to the dimensions of the heat-conducting rod 6, it is difficult to achieve an absolutely smooth surface, and there may be some tiny gaps. These gaps will reduce the heat conduction efficiency. Therefore, before inserting the heat-conducting rod 6, thermally conductive grease is first applied to the contact areas of the heat-conducting rod 6 with the through hole 13 and the slot 22. The thermally conductive grease has good thermal conductivity and a certain degree of fluidity, which can fill the gaps between the contact surfaces to improve the heat conduction efficiency and ensure good heat transfer performance between the heat-conducting rod 6 and the stator core 1 and the thermally conductive pressure ring 2.

[0026] In this embodiment, the inner section of the bolt 4 has a smooth surface, and the end that connects to the nut 41 has a thread. The preload of the bolt 4 and the nut 41 is used to press and fix the two heat-conducting pressure rings 2, the stator core 1 assembly and the heat insulation shell 3 as a whole.

[0027] In this embodiment, the heat insulation shell 3 includes a heat insulation shell 31, with perforations 21 provided on the heat insulation shell 31. The heat insulation shell 31 is covered with an aerogel layer 32, and an aluminum foil tape layer 33 is wrapped around the outside of the aerogel layer 32. An outer protective layer 34 is wrapped around the outside of the aluminum foil tape. Specifically, the aerogel is generally more than 80% air, so it has excellent heat insulation performance and can block external heat from being transferred from the side of the stator core 1 to the inside. The aerogel layer 32 is wrapped around the outside of the aluminum foil tape layer 33. The aluminum foil tape not only fixes the aerogel and prevents it from falling off, but also has a certain reflective heat insulation effect. The outer protective layer 34 is an aluminum foil layer, which is used to form physical protection for the internal aerogel and aluminum foil tape, preventing them from being damaged by external forces during use, thereby ensuring the durability of the entire heat insulation shell 3.

[0028] In this embodiment, the heat insulation shell 31 is provided with annular grooves 35 at both ends, and a high-temperature resistant sealing ring 36 is fixed in the annular groove 35. The other side of the sealing ring 36 abuts against the heat-conducting pressure ring 2. By setting the high-temperature resistant sealing ring 36, a good sealing effect can be formed between the heat-conducting pressure ring 2 and the heat insulation shell 31, preventing external high-temperature airflow or impurities from entering the stator core 1.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A high-temperature resistant multilayer heat-insulating stator structure, comprising a stator core (1), wherein the stator core (1) is provided with a plurality of through slots (11) in the middle, and a retaining tooth (12) is provided between two adjacent through slots (11), characterized in that, The stator core (1) is provided with symmetrical heat-conducting pressure rings (2) at both ends, and a heat-insulating shell (3) is provided between the two heat-conducting pressure rings (2). The heat-insulating shell (3) surrounds the stator core (1) in a non-contact manner. The two heat-conducting pressure rings (2) and the heat-insulating shell (3) are provided with several corresponding through holes (21). Bolts (4) are provided in the through holes (21), and nuts (41) are fitted at the ends of the bolts (4). Several slots (22) are provided on the inner side of the two heat-conducting pressure rings (2). The stator core (1) is provided with through holes (13) corresponding to the positions of the slots (22). A heat-conducting rod (6) is inserted into the through hole (13). The two ends of the heat-conducting rod (6) extend to the outside of the through hole (13) and are inserted into the slots (22) corresponding to the two ends. Several heat dissipation fins (23) are provided on the outer side of the two heat-conducting pressure rings (2).

2. The high-temperature resistant multilayer thermal insulation stator structure according to claim 1, characterized in that, A heat dissipation strip (24) is inserted into the heat dissipation fin (23), and the heat dissipation strip (24) is made of thermally conductive silicone.

3. The high-temperature resistant multilayer thermal insulation stator structure according to claim 1, characterized in that, The areas where the heat-conducting rod (6) contacts the through hole (13) and the areas where it contacts the slot (22) are coated with thermal grease.

4. The high-temperature resistant multilayer thermal insulation stator structure according to claim 1, characterized in that, The inner section of the bolt (4) has a smooth surface, and the end that connects to the nut (41) has threads.

5. The high-temperature resistant multilayer thermal insulation stator structure according to claim 1, characterized in that, The heat insulation shell (3) includes a heat insulation shell (31), the perforation (21) is provided on the heat insulation shell (31), the heat insulation shell (31) is covered with an aerogel layer (32), the outer side of the aerogel layer (32) is wrapped with an aluminum foil tape layer (33), and the outer side of the aluminum foil tape is covered with an outer protective layer (34).

6. The high-temperature resistant multilayer thermal insulation stator structure according to claim 5, characterized in that, The outer protective layer (34) is an aluminum foil layer.

7. A high-temperature resistant multilayer thermal insulation stator structure according to claim 5, characterized in that, The heat insulation shell (31) has annular grooves (35) at both ends, and a high-temperature resistant sealing ring (36) is fixed in the annular groove (35). The other side of the sealing ring (36) abuts against the heat-conducting pressure ring (2).

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