Structure for increasing creepage distance of S-shaped iron core shot package

Abstract

The utility model discloses an S iron core shot package creepage distance increasing structure, which comprises an iron core main body, the mechanical strength of the iron core main body is increased through an outer layer arranged at the external position, an inner layer is fixed at the inner side position of the iron core main body, and the inner layer improves the magnetic conductivity of the iron core main body. A magnetic fluid channel is arranged at the inner position of the iron core main body, the magnetic fluid channel leads to the outer layer from the inner layer, the surface position of the inner layer is coated with a silicon resin coating in order to increase heat resistance, the silicon resin coating is evenly smeared on the surface of the inner layer, a groove is formed in the upper position of the right end of the iron core main body, and the silicon resin coating is evenly smeared on the surface of the inner layer. According to the device, the injection molding length of the original S injection package is increased to 0.3 mm from 0.1 mm, the S injection package exceeds and shields the S iron core, insulation separation processing is carried out, the creepage distance is increased, insulation paper does not need to be inserted, working hours are reduced, the injection molding length of the S injection package is increased, the S iron core is separated, creepage is prevented, and a poor stator is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field related to structures for increasing creepage distance of S-core shot packages, and specifically relates to a structure for increasing creepage distance of S-core shot packages. Background Art

[0002] The S core package refers to the iron core part of the motor used to support and fix the coil. It is usually made of silicon steel sheets or other magnetic materials. It can effectively concentrate and guide the magnetic field, thereby improving the efficiency and performance of the motor. The S core package plays an important role in the motor and is one of the important components of the motor.

[0003] The insulation of the motor stator plays an important role in the safety design. Its safety distance has a great influence on the insulation and withstand voltage of the motor. Generally, the S-core shot-wrap insulation design uses plastic to cover the S-core with a partition or adds insulating paper for treatment to prevent the risk of coil creepage and breakdown of the S-core. The winding full slot rate is high, causing the enameled wire to be squeezed to the edge of the S-core. Under the influence of pressure, the creepage distance is shortened. During the withstand voltage test, the enameled wire breaks through and creeps to the S-core, resulting in a high stator defect rate. The stator is stored in an environment with high air humidity for a long time, and the insulation capacity of the enameled wire decreases or the S-core rusts, causing insulation breakdown, affecting the safety of the motor. Utility Model Content

[0004] The utility model aims to provide a structure for increasing the creepage distance of an S-core shot package, so as to solve the problem that the insulation of the motor stator mentioned in the above-mentioned background technology plays an important role in the safety design, and its safety distance has a great influence on the insulation and withstand voltage of the motor. Generally, the S-core shot package insulation design adopts plastic to cover the S-core with a partition or adds insulating paper for treatment, which plays a role in blocking the risk of the coil creepage breaking through the S-core. The winding full slot rate is high, resulting in the enameled wire being squeezed to the edge of the S-core. Under the influence of pressure, the creepage distance is shortened. In the withstand voltage test, the enameled wire breaks through and creeps to the S-core, resulting in a high stator defect rate. The stator is stored in an environment with high air humidity for a long time, and the insulation capacity of the enameled wire decreases or the S-core is rusted, causing insulation breakdown, affecting the safety of the motor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an S-core shot package structure for increasing creepage distance, comprising a core body, wherein the core body increases mechanical strength by an outer layer installed at an external position, an inner layer is fixed at an inner position of the core body, the inner layer improves the magnetic permeability of the core body, the core body is provided with a magnetic fluid channel at an internal position, the magnetic fluid channel leads from the inner layer to the outer layer, the inner layer is coated with a silicone resin coating at a surface position to increase heat resistance, wherein the silicone resin coating is evenly applied to the surface of the inner layer, and a groove is provided at the right end of the core body at an upper position.

[0006] Preferably, the outer layer is installed at the outermost position of the core body.

[0007] Preferably, the outer layer can increase the mechanical strength of the core body.

[0008] Preferably, the inner layer improves the magnetic permeability of the core body.

[0009] Preferably, the inner layer can effectively guide the magnetic flux after improving the magnetic permeability.

[0010] Preferably, the core body is mounted with the coil via a slot.

[0011] Preferably, the silicone resin coating is evenly applied to the surface of the inner layer.

[0012] Preferably, the magnetic fluid channel leads from the inner layer to the outer layer, and the magnetic fluid channel can guide the flow of the magnetic fluid.

[0013] Compared with the prior art, the utility model provides a structure for increasing the creepage distance of an S-core shot pack, which has the following beneficial effects:

[0014] 1. This device increases the original S shot package injection length from 0.1 mm to 0.3 mm, exceeds and blocks the S core, performs insulation barrier treatment, increases creepage distance, does not require inserting insulating paper, reduces working hours, increases the S shot package injection length, blocks the S core, prevents creepage, and causes stator defects.

[0015] 2. The inner surface of the device is evenly coated with a silicone resin coating, which has excellent high temperature resistance and chemical stability, can improve the insulation performance and heat resistance of the inner layer, and also has good moisture resistance.

[0016] 3. A magnetic fluid channel is provided at the internal position of the core body. The magnetic fluid channel runs from the inner layer to the outer layer, and the magnetic fluid can flow on the surface of the core to achieve local cooling. The magnetic fluid channel can effectively improve the heat dissipation efficiency and avoid excessive cooling of the entire equipment. By controlling the magnetic field, the flow path and speed of the magnetic fluid can be adjusted to achieve cooling of the local area, thereby improving the reliability and performance of the motor or generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of an S-core shot blasting package with increased creepage distance.

[0018] Figure 2 This is a schematic diagram of the bottom structure of an S-core shot blasting package of the utility model for increasing the creepage distance.

[0019] Figure 3The utility model is a side view schematic diagram of a structure for increasing the creepage distance of an S-core shot blasting package.

[0020] In the figure: 1. core body; 2. outer layer; 3. slot; 4. inner layer; 5. magnetic fluid channel; 6. silicone resin coating. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1-3 The structure shown in the figure increases the creepage distance of an S-core package, including a core body 1, wherein the core body 1 increases mechanical strength by installing an outer layer 2 at an external position, an inner layer 4 is fixed at an inner position of the core body 1, and the inner layer 4 improves the magnetic permeability of the core body 1, and a magnetic fluid channel 5 is provided at an internal position of the core body 1, and the magnetic fluid channel 5 leads from the inner layer 4 to the outer layer 2, and the inner layer 4 is coated with a silicone coating 6 at a surface position to increase heat resistance, wherein the silicone coating 6 is evenly applied to the surface of the inner layer 4, and a groove 3 is provided at the right end of the core body 1 at an upper position.

[0023] This device increases the original S shot package injection length from 0.1 mm to 0.3 mm, exceeds and blocks the S core, performs insulation barrier treatment, increases creepage distance, eliminates the need to insert insulating paper, reduces working hours, increases the S shot package injection length, blocks the S core, and prevents creepage that may cause stator defects.

[0024] like Figure 1 and Figure 2 As shown, the outer layer 2 is installed at the outermost position of the core body 1, the outer layer 2 can increase the mechanical strength of the core body 1, the inner layer 4 improves the magnetic permeability of the core body 1, and the inner layer 4 can effectively guide the magnetic flux after improving the magnetic permeability. The core body 1 is installed with the coil through the slot 3, the silicone resin coating 6 is evenly applied to the surface of the inner layer 4, and the magnetic fluid channel 5 leads from the inner layer 4 to the outer layer 2, and the magnetic fluid channel 5 can guide the flow of magnetic fluid.

[0025] A magnetic fluid channel 5 is provided at the internal position of the core body 1. The magnetic fluid channel 5 leads from the inner layer 4 to the outer layer 2, and can make the magnetic fluid flow on the surface of the core, so as to achieve local cooling. The magnetic fluid channel 5 can effectively improve the heat dissipation efficiency and avoid excessive cooling of the entire equipment. By controlling the magnetic field, the flow path and speed of the magnetic fluid can be adjusted to achieve cooling of the local area.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for increasing creepage distance of an S-core shot pack, characterized in that: The invention comprises an iron core body (1), wherein the iron core body (1) increases its mechanical strength by installing an outer layer (2) at an external position, an inner layer (4) is fixed at an inner position of the iron core body (1), and the inner layer (4) improves the magnetic permeability of the iron core body (1), and the iron core body (1) is provided with a magnetic fluid channel (5) at an internal position, and the magnetic fluid channel (5) leads from the inner layer (4) to the outer layer (2), and the inner layer (4) is coated with a silicone resin coating (6) at a surface position to increase heat resistance, wherein the silicone resin coating (6) is evenly applied to the surface of the inner layer (4), and a groove (3) is provided at the upper position of the right end of the iron core body (1).

2. The structure for increasing creepage distance of an S-core shot pack according to claim 1 is characterized in that: The outer layer (2) is installed at the outermost position of the core body (1).

3. The structure for increasing creepage distance of an S-core shot pack according to claim 2 is characterized in that: The outer layer (2) can increase the mechanical strength of the core body (1).

4. The structure for increasing creepage distance of an S-core shot pack according to claim 1 is characterized in that: The inner layer (4) improves the magnetic permeability of the core body (1).

5. The structure for increasing creepage distance of an S-core shot package according to claim 4 is characterized in that: The inner layer (4) can effectively guide the magnetic flux after improving the magnetic permeability.

6. The structure for increasing creepage distance of an S-core shot pack according to claim 1, characterized in that: The core body (1) is mounted on the coil via a slot (3).

7. The structure for increasing creepage distance of an S-core package according to claim 1, characterized in that: The silicone resin coating (6) is evenly applied to the surface of the inner layer (4).

8. The structure for increasing creepage distance of an S-core shot pack according to claim 1, characterized in that: The magnetic fluid channel (5) leads from the inner layer (4) to the outer layer (2), and the magnetic fluid channel (5) can guide the flow of the magnetic fluid.

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