Frequency converter heat dissipation structure used in textile production environment

Abstract

The utility model provides a frequency converter heat radiation structure used in a textile production environment, comprising a housing with an opening at one end, and the side wall of the housing is provided with a glue filling hole; the circuit device, the fixing plate, the sealing plate and the fins are arranged in the cover shell, the circuit device is fixedly arranged on the fixing plate, a gap is reserved between the fixing plate and the sealing plate, the fins are fixedly arranged on the sealing plate, the sealing plate, the fixing plate and the side wall of the cover shell define a sealed space, and the sealed space is communicated with the outside through the glue filling hole; the bottom shell is fixedly connected with the opening edge of the housing; an air circulation opening is formed in the side wall of the housing, and external air can make contact with the fins through the air circulation opening. According to the utility model, the sealed space corresponding to the glue filling hole is arranged between the circuit device and the fin, so that the sealing glue can be filled into the sealed space in the production process, and the space where the circuit device is located is not communicated with the space where the fin is located; therefore, floating dust in the air is prevented from entering the space where the circuit device is located in the heat dissipation process when the fins are in contact with the external air, and the floating dust is prevented from being in contact with the electronic device.

Description

Technical Field

[0001] This utility model belongs to the field of frequency converter manufacturing technology, and in particular relates to a frequency converter heat dissipation structure for use in textile production environments. Background Technology

[0002] A frequency converter is a power electronic device used to change and control the frequency and voltage of a motor during operation. It can also reduce voltage fluctuations in the circuit, minimize the impact of the power grid on equipment, and improve the effective power of the grid. In industrial production, it allows for more convenient control of motor speed, torque, and power, enabling variable-speed operation of the motor and reducing equipment power consumption.

[0003] In textile production environments, frequency converters control the rotation speed of shafts in equipment such as winding machines and sizing machines to complete tasks like yarn weaving, sizing, and winding. However, frequency converters tend to generate high temperatures during operation. To maintain better efficiency, ventilation holes and cooling fans are installed on the frequency converters to circulate air and lower the operating temperature. However, textile equipment environments typically contain a significant amount of dust, which can easily enter the frequency converter through airflow. This dust can then seep into the internal gaps of the frequency converter and approach electronic components, affecting their operation and potentially causing short circuits and posing a fire hazard. Utility Model Content

[0004] In view of this, the present invention aims to propose a heat dissipation structure for frequency converters in textile production environments to prevent airborne dust from coming into contact with the electronic components in the frequency converter.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A frequency converter heat dissipation structure for use in textile production environments, including

[0007] The cover has an opening at one end and a filling hole on its side wall.

[0008] The internal device is placed inside a housing and includes circuit components, a fixing plate, a sealing plate, and fins. The circuit components are fixed on the fixing plate, and a gap is left between the fixing plate and the sealing plate. The fins are fixed on the sealing plate. The sealing plate, the fixing plate, and the side wall of the housing surround and form a sealed space, and the sealed space communicates with the outside through an adhesive filling hole.

[0009] The bottom shell prevents the internal components from falling out of the cover and is fixedly connected to the edge of the cover opening;

[0010] The side wall of the cover has an air vent, through which external air can come into contact with the fins.

[0011] Furthermore, a heat-conducting structure is provided between the fixing plate and the sealing plate, and the two ends of the heat-conducting structure are respectively attached to or fixed to the fixing plate and the sealing plate.

[0012] Furthermore, the heat-conducting structure is placed in the middle of the sealed space, and an annular sealing loop is left between the heat-conducting structure and the side wall of the cover, and the glue filling hole is connected to the sealing loop.

[0013] Furthermore, an adhesive outlet hole is provided on the side wall of the cover, and the sealing ring is connected to the adhesive outlet hole.

[0014] Furthermore, the filling hole and the discharging hole are located on the same side wall of the cover, and the filling hole and the discharging hole are located on both sides of the heat-conducting structure.

[0015] Furthermore, the heat-conducting structure includes a flow-guiding surface, and the flow-guiding surface and the axis of the filling hole are provided at an angle.

[0016] Furthermore, the heat-conducting structure is a heat sink.

[0017] Furthermore, the thermally conductive structure is a thermally conductive ring, which can be filled with thermally conductive silicone grease.

[0018] Furthermore, the side wall of the cover is provided with a boss along the circumference, and the edge of the fixing plate can abut against the boss.

[0019] Furthermore, a top plate extends vertically upward from the edge of the bottom shell, the top of which is pressed against the edge of the sealing plate. A vent is provided on the top plate, and the vent corresponds to the air vent.

[0020] Compared with existing technologies, the inverter heat dissipation structure for textile production environments described in this utility model has the following advantages:

[0021] This utility model employs a sealed space between the circuit device and the fin, corresponding to the glue filling hole, so that the sealant can be filled into the sealed space during the production process, making the space where the circuit device and the fin are located disconnected from each other. This prevents dust in the air from entering the space where the circuit device is located during the heat dissipation process of the fin contacting the outside air, thereby preventing dust from contacting the electronic device.

[0022] A heat-conducting structure is installed between the fixed plate and the sealing plate, which allows the heat on the fixed plate to be transferred to the fins more quickly, thereby improving the heat dissipation efficiency of the frequency converter.

[0023] The combination of a dispensing hole and a filling hole allows the filled adhesive to be discharged from the dispensing hole after filling the sealing loop, making it easier for operators to determine whether the space inside the frequency converter is filled.

[0024] By setting a flow guide surface on the heat-conducting structure, the filled adhesive enters from one side of the sealing ring, avoiding the formation of an air chamber caused by the simultaneous filling of adhesive on both sides of the sealing ring and the inability of air to be completely discharged inside the sealing ring.

[0025] The sealing plate is held in place by a top plate, which ensures a tight fit between the fixing plate and the boss, preventing the sealant from entering the space where the electronic components are located and causing damage to the electronic components. Attached Figure Description

[0026] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0027] Figure 1 This is a cross-sectional view of the internal structure of the frequency converter in Example 1;

[0028] Figure 2 This is an exploded view of the inverter structure in Example 2;

[0029] Figure 3 This is a schematic cross-sectional view of the internal structure of the frequency converter in Example 2;

[0030] Figure 4 This is a schematic diagram of the heat-conducting block and the sealed flow channel in Example 2;

[0031] Figure 5 This is a schematic diagram of the heat-conducting ring and the sealed flow channel in Example 3.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Cover; 11-Boss; 12-Air vent; 13-Filling hole; 14-Dispensing hole; 2-Bottom shell; 21-Top plate; 22-Ventilation port; 3-Internal components; 31-Circuit components; 32-Fixing plate; 33-Sealing plate; 34-Fin; 35-Heat-conducting structure; 35a-Heat-conducting block; 35b-Heat-conducting ring; 351-Flow guide surface; 4-Sealed space; 5-Sealed loop. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] The present invention relates to a frequency converter heat dissipation structure for use in textile production environments, comprising a housing consisting of a cover 1 and a bottom shell 2, and an internal device 3 placed inside the housing. One end of the cover 1 is open, and the bottom shell 2 prevents the internal device 3 from detaching from the cover 1 and is fixedly connected to the edge of the opening of the cover 1. The internal device 3 includes a circuit device 31, a fixing plate 32, a sealing plate 33, and fins 34. The circuit device 31 is fixed on the fixing plate 32. A gap is left between the fixing plate 32 and the sealing plate 33, and a sealed space 4 is formed by the fixing plate 32, the sealing plate 33, and the side wall of the housing 1. During installation, the circuit device 31 and the fixing plate 32 can be placed inside the housing 1, with the circuit device 31 at the closed end of the housing 1, so that the fixing plate 32 faces the opening. Then, sealant is filled onto the fixing plate 32 to seal the gap between the fixing plate 32 and the side wall of the housing 1. Then, the sealing plate 33 is placed so that it is in contact with the sealant surface. Then, the bottom shell 2 is used to seal the opening of the housing 1. Alternatively, a filling hole 13 communicating with the sealed space 4 can be opened on the housing 1, so that the sealed space 4 communicates with the outside through the filling hole 13. First, the sealing plate 33 is placed inside the housing 1, and connected to the housing 1 via the bottom shell 2 to prevent the internal components 3 from detaching from the bottom shell 2. Sealant is then filled into the sealed space 4 through the filling hole 13, separating the space where the fins 34 are located from the space where the circuit components 31 are located. This avoids gaps at the separation point, preventing airborne dust from entering the space where the circuit components 31 are located during the heat dissipation process of the fins 34 through the outside air, thus preventing damage to the electronic components. Specifically, the bottom shell 2 and the housing 1 can be connected by snap-fit ​​or by adhesive.

[0040] The side wall of the housing 1 has an air vent 12. After the inverter is installed, the fins 34 are opposite to the air vent 12, so that external air can come into contact with the fins 34 through the air vent 12 and carry away the heat on the fins 34 during the air flow.

[0041] Example 2,

[0042] To ensure the structural stability of the sealed space 4 during installation, the inverter heat dissipation structure for textile production environments described in this invention includes a heat-conducting structure 35 between the fixed plate 32 and the sealing plate 33. Both ends of the heat-conducting structure 35 are respectively attached to or fixed to the fixed plate 32 and the sealing plate 33. In this embodiment, the heat-conducting structure 35 is a heat sink, and the heat sink, fixed plate 32, and sealing plate 33 can be integrally formed; alternatively, the heat sink and fixed plate 32 can be integrally formed, and then the heat sink rests against the sealing plate 33 during installation; or the heat sink and sealing plate 33 can be integrally formed, and then the heat sink rests against the fixed plate 32 during installation, facilitating heat transfer through the heat sink.

[0043] The heat-conducting structure 35 is placed in the middle of the sealed space 4, and an annular sealed loop 5 is formed between the heat-conducting structure 35 and the side wall of the cover 1. The filling hole 13 is connected to the sealed loop 5. The heat-conducting structure 35 is provided with a flow guiding surface 351, which corresponds to the filling hole 13. The plane of the flow guiding surface 351 forms an angle with the axis of the filling hole 13. During installation, the sealed loop 5 is set vertically so that the filling hole 13 faces upward. This allows the sealant filled from the filling hole 13 to flow along the flow guiding surface 351 to the side of the heat-conducting structure 35 until the sealant flows to the bottom of the sealed loop 5. Then, the sealant accumulates from the bottom upward, thereby gradually expelling the air in the sealed loop 5 and preventing the formation of air chambers at the edge of the sealed loop 5, which would affect the sealing effect. The cover 1 has a glue outlet hole 14 on its side wall, and the sealing ring 5 is connected to the glue outlet hole 14. The glue outlet hole 14 and the glue filling hole 13 are respectively located on both sides of the heat-conducting structure 35. When the sealing ring 5 is filled with sealant, the sealant can overflow outward through the glue outlet hole 14, so that the operator can judge the amount of glue filling and the filling effect.

[0044] The side wall of the casing 1 is provided with a boss 11 along its circumference. The edge of the fixing plate 32 can abut against the boss 11. The edge of the bottom shell 2 extends vertically upward to form a top plate 21. The top of the top plate 21 abuts tightly against the edge of the sealing plate 33. The boss 11 and the top plate 21 pre-position the fixing plate 32 and the sealing plate 33. The top plate 21 has a vent 22, which corresponds to the air flow port 12, so that external air can contact the fins 34 for heat exchange.

[0045] Example 3

[0046] The difference between this embodiment and Embodiment 2 is that the heat-conducting structure 35 is a heat-conducting ring 35b. The heat-conducting ring 35b can be integrally formed with the fixing plate 32 or with the sealing plate 33. The fixing plate 32 and the sealing plate 33 can exchange heat by filling the heat-conducting ring 35b with thermal grease.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A frequency converter heat dissipation structure for use in textile production environments, characterized in that: Includes a cover, one end of which is open, and the side wall of the cover has a filling hole for glue. The internal device is placed inside a housing and includes circuit components, a fixing plate, a sealing plate, and fins. The circuit components are fixed on the fixing plate, and a gap is left between the fixing plate and the sealing plate. The fins are fixed on the sealing plate. The sealing plate, the fixing plate, and the side wall of the housing surround and form a sealed space, and the sealed space communicates with the outside through an adhesive filling hole. The bottom shell prevents the internal components from falling out of the cover and is fixedly connected to the edge of the cover opening; The side wall of the cover has an air vent, through which external air can come into contact with the fins.

2. The inverter heat dissipation structure for textile production environments according to claim 1, characterized in that: A heat-conducting structure is provided between the fixing plate and the sealing plate, and the two ends of the heat-conducting structure are respectively attached to or fixed to the fixing plate and the sealing plate.

3. The inverter heat dissipation structure for textile production environments according to claim 2, characterized in that: The heat-conducting structure is placed in the middle of the sealed space, and an annular sealing loop is left between the heat-conducting structure and the side wall of the cover. The filling hole is connected to the sealing loop.

4. The inverter heat dissipation structure for textile production environments according to claim 3, characterized in that: The cover sidewall also has an adhesive outlet hole, and the sealing ring is connected to the adhesive outlet hole.

5. The inverter heat dissipation structure for textile production environments according to claim 4, characterized in that: The filling hole and the discharging hole are located on the side wall of the same side of the cover, and the filling hole and the discharging hole are located on both sides of the heat-conducting structure.

6. The inverter heat dissipation structure for textile production environments according to claim 3, characterized in that: The heat-conducting structure includes a flow-guiding surface, and there is an angle between the flow-guiding surface and the axis of the filling hole.

7. The inverter heat dissipation structure for textile production environments according to claim 2, characterized in that: The heat-conducting structure is a heat sink.

8. The inverter heat dissipation structure for textile production environments according to claim 2, characterized in that: The thermally conductive structure is a thermally conductive ring, which can be filled with thermally conductive silicone grease.

9. A frequency converter heat dissipation structure for textile production environments according to claim 1, characterized in that: The side wall of the cover is provided with a boss along the circumference, and the edge of the fixing plate can abut against the boss.

10. A frequency converter heat dissipation structure for use in a textile production environment according to claim 1, characterized in that: The bottom shell edge extends vertically upward to form a top plate, the top of which is pressed against the edge of the sealing plate. The top plate has a vent, which corresponds to the air vent.

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