Housing structure of frequency converter

Abstract

The utility model relates to the technical field of frequency converter shells, and discloses a frequency converter shell structure which comprises an inner shell, front and back shells are installed on the front and back of the inner shell, side shells are installed on the left and right sides of the inner shell, and the front and back shells and the side shells are fixedly connected with the inner shell through screws. Heat dissipation grids are arranged on the front face, the back face and the side face of the inner-layer shell, and a threading hole is formed in the outer wall of the left side of the inner-layer shell; the front-back shell is provided with first ventilation grooves, the first ventilation grooves directly face the heat dissipation grids on the front face and the back face of the inner-layer shell, a conventional single-layer shell structure is replaced with a double-layer shell structure, the protection performance is better, meanwhile, the outer-layer shell and the inner-layer shell are detachably installed, and when the outer-layer shell needs to be damaged, the outer-layer shell is not damaged. And only the outer-layer shell needs to be detached and replaced, and the whole shell structure does not need to be protected.

Description

Technical Field

[0001] This utility model relates to the field of inverter housing technology, specifically an inverter housing structure. Background Technology

[0002] Inverter motors are increasingly widely used in modern industry and daily life. Their stable performance depends on a good housing structure design. Existing inverter housing structures are simple and have poor heat dissipation and impact protection, failing to provide adequate protection for their internal components. Utility Model Content

[0003] The purpose of this utility model is to provide a variable frequency drive housing structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a variable frequency drive housing structure, including an inner housing, with front and back housings installed on the front and back of the inner housing, and side housings installed on the left and right sides of the inner housing, wherein the front and back housings and the side housings are all fixedly connected to the inner housing by screws;

[0005] The inner outer shell has heat dissipation grids on its front, back and sides, and a wire through hole on its left outer wall.

[0006] A ventilation groove is provided on the front and back outer shells. The ventilation groove is directly opposite the heat dissipation grid on the front and back of the inner outer shell. A fixing plate is fixedly installed on the inner side of the front and back outer shells. A through groove is provided on the top of the front and back outer shells. A spring is fixedly installed on the top of the fixing plate. An I-shaped protective strip is fixedly installed on the top of the spring. The I-shaped protective strip is slidably disposed in the through groove. The highest point of the I-shaped protective strip is higher than the upper surface of the inner outer shell.

[0007] The outer wall of the side shell is provided with a second ventilation groove, which is directly opposite the heat dissipation grid on the side of the inner shell.

[0008] Furthermore, an elastic strip is fixedly installed on the top of the I-shaped protective strip, and the length of the I-shaped protective strip is consistent with the length of the inner outer shell.

[0009] Furthermore, a heat dissipation fin is inserted into the ventilation groove, and a heat-conducting mounting plate is fixedly installed on the end of the heat dissipation fin facing the inner outer shell. The heat-conducting mounting plate is welded to the front and back outer shells.

[0010] Furthermore, the outer wall of the side shell is provided with a clearance hole, which is directly opposite the wire hole.

[0011] Furthermore, a base plate is fixedly installed at the bottom of the inner outer shell, and the front and back outer shells and the side outer shells are fixedly connected to the base plate by screws.

[0012] Furthermore, an external cooling fan is fixedly installed on the side shell, and the external cooling fan is located at the center of the second ventilation slot.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The conventional single-layer shell structure is replaced with a double-layer shell structure, which provides better protection. At the same time, the outer shell and the inner shell are installed in a detachable manner. If the outer shell is damaged, only the outer shell needs to be removed and replaced, without the need to replace the entire shell structure.

[0015] 2. The upper surface of the inner outer shell is protected by an I-shaped protective strip that is higher than the inner outer shell. When the outer shell structure falls, the I-shaped protective strip is more likely to hit the ground first, thus reducing the probability of the upper surface of the inner outer shell colliding with the ground. At the same time, the I-shaped protective strip will not hinder the user from operating the buttons on the upper surface of the inner outer shell. Furthermore, because the I-shaped protective strip is connected to the front and back shells by a spring, the spring can contract under force when the I-shaped protective strip collides with the ground, buffering the impact force and effectively improving the anti-collision capability of the I-shaped protective strip. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the inner shell and the base plate of this utility model;

[0018] Figure 3 This is a structural schematic diagram of the exploded views of the front and back shells of this utility model;

[0019] Figure 4 This is a schematic diagram of the side shell of this utility model.

[0020] In the diagram: 1. Inner outer shell; 101. Heat dissipation grid; 102. Wiring hole; 2. Outer outer shell; 201. Front and back shells; 2011. Ventilation slot one; 2012. Heat dissipation fins; 2013. Thermally conductive mounting plate; 2014. Fixing plate; 2015. Through slot; 2016. Spring; 2017. I-shaped protective strip; 202. Side shell; 2021. Ventilation slot two; 2022. Clearance hole; 3. Base plate; 4. External cooling fan; 5. Elastic strip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a variable frequency drive housing structure, including an inner housing 1, with front and back housings 201 installed on the front and back of the inner housing 1, and side housings 202 installed on the left and right sides of the inner housing 1. The front and back housings 201 and the side housings 202 are all fixedly connected to the inner housing 1 by screws, replacing the conventional single-layer housing structure with a double-layer housing structure, which provides better protection. At the same time, the outer housing 2 and the inner housing 1 are installed in a detachable manner. When the outer housing 2 is damaged, it can be removed and replaced without replacing the entire housing structure.

[0023] The inner outer shell 1 has heat dissipation grids 101 on the front, back and sides, and a wire hole 102 is provided on the left outer wall of the inner outer shell 1. The heat dissipation grids 101 ensure air circulation inside and outside the inner outer shell 1, so that the heat generated by the electronic components inside the inner outer shell 1 can be dissipated when they are working.

[0024] Ventilation slots 2011 are provided on the front and back outer shells 201, which are directly opposite the heat dissipation grilles 101 on the front and back of the inner outer shell 1. A fixing plate 2014 is fixedly installed on the inner side of the front and back outer shells 201. A through groove 2015 is provided on the top of the front and back outer shells 201. A spring 2016 is fixedly installed on the top of the fixing plate 2014, and an I-shaped protective strip 2017 is fixedly installed on the top of the spring 2016. The I-shaped protective strip 2017 is slidably disposed within the through groove 2015, with its highest point exceeding the upper surface of the inner outer shell 1. By utilizing the ventilation slots 2011 aligned with the heat dissipation grilles 101, protection is improved while ensuring... With air circulation between the inside and outside, the upper surface of the inner outer shell 1 is protected by an I-shaped protective strip 2017 that is higher than the inner outer shell 1. When the shell structure falls, the I-shaped protective strip 2017 has a greater probability of contacting the ground first, thereby reducing the probability of the upper surface of the inner outer shell 1 colliding with the ground. At the same time, the I-shaped protective strip 2017 will not hinder the user from operating the buttons on the upper surface of the inner outer shell 1. Furthermore, since the I-shaped protective strip 2017 is connected to the front and back shells 201 by a spring 2016, when the I-shaped protective strip 2017 collides with the ground, the spring 2016 can be compressed under force to buffer the impact force, which can effectively improve the anti-collision capability of the I-shaped protective strip 2017.

[0025] The outer wall of the side shell 202 is provided with a second ventilation slot 2021, which is directly opposite the heat dissipation grid 101 on the side of the inner shell 1. The second ventilation slot 2021 is provided to ensure the circulation of air inside and outside while improving protection.

[0026] An elastic soft strip 5 is fixedly installed on the top of the I-shaped protective strip 2017 to further improve the anti-collision capability of the I-shaped protective strip 2017. The length of the I-shaped protective strip 2017 is consistent with the length of the inner shell 1 to ensure that the I-shaped protective strip 2017 can provide sufficient protection for the upper surface of the inner shell 1.

[0027] A heat dissipation fin 2012 is inserted into the ventilation slot 2011. A thermally conductive mounting plate 2013 is fixedly installed on the end of the heat dissipation fin 2012 facing the inner shell 1. The thermally conductive mounting plate 2013 is welded to the front and back shells 201. The thermally conductive mounting plate 2013 is set to install the heat dissipation fin 2012 and to transfer heat to the heat dissipation fin 2012. The heat dissipation fin 2012 is set to increase the contact area with the flowing air, thereby improving the heat dissipation effect.

[0028] The outer wall of the side shell 202 is provided with a clearance hole 2022, which is directly opposite the wire hole 102 to ensure that the wire harness can extend from the shell structure into the inner shell 1.

[0029] A base plate 3 is fixedly installed at the bottom of the inner outer shell 1. The front and back shells 201 and the side shells 202 are fixedly connected to the base plate 3 by screws. The base plate 3 is set to protect the bottom of the inner outer shell 1 and to install the inner outer shell 1 on the equipment.

[0030] An external cooling fan 4 is fixedly installed on the side shell 202. The external cooling fan 4 is located in the center of the ventilation slot 2021. The operation of the external cooling fan 4 generates a fast airflow, which can better dissipate heat from the electronic components.

[0031] Working principle: When in use, after the electronic components are installed inside the inner shell 1, the front and back shells 201 and the side shells 202 are installed on the inner shell 1 using screws. During installation, the wire harness connecting the electronic components is passed through the clearance hole 2022, and the front and back shells 201 and the side shells 202 form protection on the outside of the inner shell 1.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A variable frequency drive housing structure, comprising an inner housing (1), characterized in that: The inner outer shell (1) is equipped with front and back shells (201) on the front and back sides, and side shells (202) are installed on the left and right sides of the inner outer shell (1). The front and back shells (201) and the side shells (202) are all fixedly connected to the inner outer shell (1) by screws. The inner outer shell (1) has heat dissipation grids (101) on its front, back and side, and a wire hole (102) is provided on the left outer wall of the inner outer shell (1). A ventilation groove (2011) is provided on the front and back shells (201). The ventilation groove (2011) is directly opposite the heat dissipation grid (101) on the front and back of the inner shell (1). A fixing plate (2014) is fixedly installed on the inner side of the front and back shells (201). A through groove (2015) is provided on the top of the front and back shells (201). A spring (2016) is fixedly installed on the top of the fixing plate (2014). An I-shaped protective strip (2017) is fixedly installed on the top of the spring (2016). The I-shaped protective strip (2017) is slidably disposed in the through groove (2015). The highest point of the I-shaped protective strip (2017) is higher than the upper surface of the inner shell (1). The outer wall of the side shell (202) is provided with a second ventilation groove (2021), which is directly opposite the heat dissipation grid (101) on the side of the inner shell (1).

2. The inverter housing structure according to claim 1, characterized in that: An elastic soft strip (5) is fixedly installed on the top of the I-shaped protective strip (2017), and the length of the I-shaped protective strip (2017) is consistent with the length of the inner shell (1).

3. The inverter housing structure according to claim 1, characterized in that: A heat dissipation fin (2012) is inserted into the ventilation groove (2011). A heat-conducting mounting plate (2013) is fixedly installed on one end of the heat dissipation fin (2012) facing the inner shell (1). The heat-conducting mounting plate (2013) is welded to the front and back shells (201).

4. The inverter housing structure according to claim 1, characterized in that: The outer wall of the side housing (202) is provided with a clearance hole (2022), which is directly opposite the wire hole (102).

5. The inverter housing structure according to claim 1, characterized in that: The bottom of the inner outer shell (1) is fixedly installed with a base plate (3), and the front and back outer shells (201) and the side outer shells (202) are fixedly connected to the base plate (3) by screws.

6. The inverter housing structure according to claim 1, characterized in that: An external cooling fan (4) is fixedly installed on the side shell (202), and the external cooling fan (4) is located at the center of the second ventilation slot (2021).

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