Frequency converter housing

Abstract

The utility model discloses a frequency converter housing, which comprises a first frame body, one side of the first frame body is an opening side in an opening state, one side of the first frame body far away from the opening side is provided with a heat radiation window, the bottom of the first frame body is provided with a wire inlet and an elastic member covering the wire inlet, and the elastic member is provided with a wire outlet. The elastic piece is provided with a wire inlet gap; the second frame body is fixed to the side, away from the opening side, of the first frame body, and an air outlet is formed in the top of the second frame body; the door body covers the first frame body and is detachably connected with the first frame body; the radiator is fixed on the heat dissipation window and covers the heat dissipation window; and the fan is fixed at the air outlet and covers the air outlet. The frequency converter housing provided by the utility model can improve the protection effect on the premise of ensuring the good heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency conversion equipment, in particular to a frequency converter housing. Background Art

[0002] As devices that drive and control motors, frequency converters (VFDs) contribute to energy conservation, consumption reduction, and precise control in industrial production. They are widely used in the petroleum, steel, chemical, textile, electronics, fans, and pumps industries.

[0003] Due to the wide range of applications of frequency converters, their application environments are also varied, many of which are very harsh, such as high temperature, high dust and outdoor applications.

[0004] The inverter in the prior art mainly includes a shell and components arranged inside the shell, wherein the shell mainly includes a box body and a door body fixed to the open side of the box body by screws. Of course, in order to improve its heat dissipation effect, heat dissipation holes and / or fans are designed on the back. At the same time, in order to realize the connection between internal components and external devices, a connection port is also opened on the back.

[0005] Although the above-mentioned inverter housing can achieve a certain dust-proof effect, since it is designed with heat dissipation holes and / or fans on the back and also has connection ports on the back, this design will cause dust, water droplets and other debris to flow into the interior of the inverter housing through the holes, ultimately resulting in its weak protection effect. Utility Model Content

[0006] The purpose of the utility model is to provide a frequency converter housing to solve the problem of weak protection effect of the frequency converter housing in the prior art.

[0007] In order to solve the above problems, the utility model provides a frequency converter housing, characterized in that the frequency converter housing includes:

[0008] a first frame body, wherein one side of the first frame body is an open side in an open state, a side of the first frame body away from the open side is provided with a heat dissipation window extending therethrough, a bottom of the first frame body is provided with a wire inlet extending therethrough, and an elastic member fixed to the first frame body and covering the wire inlet, the elastic member being provided with a wire inlet slit extending therethrough;

[0009] a second frame body, the second frame body being fixed to a side of the first frame body away from the opening side, and an air outlet being provided on a top of the second frame body;

[0010] A door body, the door body cover is arranged on the first frame body and is detachably connected to the first frame body, the door body covering the opening side;

[0011] a radiator, the radiator being fixed to the heat dissipation window and covering the heat dissipation window;

[0012] A fan is fixed to the air outlet and covers the air outlet, and the fan is located above the radiator.

[0013] Preferably, the door body includes a door frame having an observation window and covering the first frame body, and a cover plate covering the door frame and forming a detachable connection with the door frame, wherein the cover plate covers the observation window.

[0014] Preferably, a first sealing strip is provided between the door frame and the first frame body, and the first sealing strip is provided around the opening side.

[0015] Preferably, a second sealing strip is provided between the cover plate and the door frame, and the second sealing strip is arranged around the observation window.

[0016] Preferably, a bracket is fixed inside the first frame, and a plurality of buckles and a plurality of limiting columns are provided at intervals on a side of the bracket close to the door body.

[0017] Preferably, a side of the first frame away from the opening side is provided with a plurality of ventilation holes penetrating therethrough and arranged in a row, and the ventilation holes are closer to the bottom of the first frame than the heat dissipation window.

[0018] Preferably, a plurality of heat dissipation holes are provided at intervals on the bottom of the second frame body.

[0019] Preferably, the wire inlets include a plurality of wire inlets and are spaced apart from each other, and the elastic members include a plurality of elastic members and are arranged in a one-to-one correspondence with the plurality of wire inlets.

[0020] Preferably, the inverter housing further includes an overcurrent protection circuit board fixed to the door body on a side close to the first frame body, and a display screen fixed to the door body and electrically connected to the overcurrent protection circuit board.

[0021] Preferably, the overcurrent protection circuit board is provided with a button, and the button is exposed outward through the door body.

[0022] Compared with the prior art, the inverter housing of the present invention is designed with a first frame and a second frame, and an elastic part covering the wire inlet is designed at the bottom of the first frame, and a wire inlet gap is designed on the elastic part. The radiator covers the heat dissipation window of the first frame and is located in the second frame. At the same time, the fan is designed to the air outlet at the top of the second frame. In this way, the components of the inverter can be installed on the first frame, and there is no need to design a connection port on the outside of the first frame. Under the premise of ensuring that the inverter housing has a good heat dissipation effect, dust, water droplets and other debris can only enter the second frame, thereby improving the protection effect of the inverter housing.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the upright three-dimensional structure of the inverter housing provided in an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of an inverted three-dimensional structure of the inverter housing provided in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the inverter housing after the door body is decomposed in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram from a first perspective of the exploded second frame and heat sink in the inverter housing provided in an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram from a second perspective of the exploded second frame and heat sink in the inverter housing provided in an embodiment of the present utility model.

[0030] Explanation of the accompanying numbers: 1. First frame; 11. Opening side; 12. Heat dissipation window; 13. Wire inlet; 14. Ventilation port; 2. Second frame; 21. Air outlet; 22. Heat dissipation hole; 3. Door; 31. Door frame; 311. Observation window; 32. Cover; 4. Radiator; 5. Fan; 6. First sealing strip; 7. Second sealing strip; 8. Bracket; 81. Buckle; 82. Limiting column; 9. Overcurrent protection circuit board; 91. Button; 10. Display screen.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] Please refer to the attached Figures 1 to 5 A frequency converter housing according to an embodiment of the present invention is described in detail, comprising a first frame 1, a second frame 2, a door 3, a radiator 4, and a fan 5.

[0038] One side of the first frame body 1 is an open side 11 in an open state, and a side of the first frame body 1 away from the open side 11 is provided with a heat dissipation window 12 running through it, and the bottom of the first frame body 1 is provided with a wire inlet 13 running through it and an elastic member fixed to the first frame body 1 and covering the wire inlet 13, and the elastic member is provided with a wire inlet slit running through it; the second frame body 2 is fixed to the side of the first frame body 1 away from the open side 11, and the top of the second frame body 2 is provided with an air outlet 21; the door body 3 is covered on the first frame body 1 and forms a detachable connection with the first frame 1, and the door body 3 covers the open side 11; the radiator 4 is fixed to the heat dissipation window 12 and covers the heat dissipation window 12; the fan 5 is fixed to the air outlet 21 and covers the air outlet 21, and the fan 5 is located above the radiator 4.

[0039] Wherein, the first shell and the second shell are rectangular parallelepiped structures.

[0040] The wire inlets 13 include multiple and spaced apart arrangements, and the elastic members include multiple and corresponding arrangements to the wire inlets 13. This design facilitates the entry of multiple lines. The elastic members may be made of elastic rubber or sponge.

[0041] A bracket 8 is fixed inside the first frame 1, and a plurality of buckles 81 and a plurality of limiting columns 82 are provided at intervals on one side of the bracket 8 close to the door 3. This design can facilitate the installation and limiting of the components of the inverter.

[0042] A plurality of vents 14 are provided on the side of the first frame body 1 away from the opening side 11, extending therethrough and arranged in a row. The vents 14 are located closer to the bottom of the first frame body 1 than the heat dissipation window 12. The vents 14 are designed to enhance the heat dissipation of the inverter. Since the vents 14 are located closer to the bottom of the first frame body 1 than the heat dissipation window 12, the vents 14 are blocked by the radiator 4. Thus, when foreign matter such as dust or water droplets naturally enter the second frame body 2, they will be blocked by the radiator 4 and will not enter the first frame body 1. Of course, the vents 14 may be omitted depending on actual needs, such as to enhance the protective effect or when the heat dissipation effect of the radiator 4 is sufficient.

[0043] The bottom of the second frame 2 is provided with a plurality of heat dissipation holes 22 extending therethrough at intervals. This design further enhances the protective effect of the inverter housing. Furthermore, the placement of the heat dissipation holes 22 at the bottom prevents water droplets from flowing vertically into the second frame 2, further enhancing the protective effect of the inverter housing.

[0044] The door body 3 includes a door frame 31 having an observation window 311 and covering the first frame 1, and a cover plate 32 covering the door frame 31 and forming a detachable connection with the door frame 31, and the cover plate 32 covers the observation window 311. This design eliminates the need to disassemble the entire door body 3 during maintenance, greatly improving maintenance efficiency.

[0045] A first sealing strip 6 is provided between the door frame 31 and the first frame body 1 , and the first sealing strip 6 is provided around the opening side 11 . This design can improve the sealing effect between the door frame 31 and the first frame body 1 .

[0046] A second sealing strip 7 is provided between the cover plate 32 and the door frame 31 , and the second sealing strip 7 is provided around the observation window 311 . This design can improve the sealing effect between the cover plate 32 and the door frame 31 .

[0047] The inverter housing also includes an overcurrent protection circuit board 9 fixed to the side of the door 3 near the first frame 1, and a display screen 10 fixed to the door 3 and electrically connected to the overcurrent protection circuit board 9. The overcurrent protection circuit board 9 is designed to provide overcurrent protection for the inverter components, while the display screen 10 can display information related to the overcurrent protection.

[0048] The overcurrent protection circuit board 9 is provided with a button 91, which is exposed outward through the door body 3. This design can facilitate the control of the overcurrent protection circuit of the overcurrent protection circuit board 9.

[0049] The inverter housing of this embodiment is designed with a first frame body 1 and a second frame body 2, and an elastic member covering the wire inlet 13 is designed at the bottom of the first frame body 1, and a wire inlet slit is designed on the elastic member. The radiator 4 covers the heat dissipation window 12 of the first frame body 1 and is located in the second frame body 2. At the same time, the fan 5 is designed to the air outlet 21 at the top of the second frame body 2. In this way, the components of the inverter can be installed in the first frame body 1, and there is no need to design a connection port on the outside of the first frame body 1. Under the premise of ensuring that the inverter housing has a good heat dissipation effect, dust, water droplets and other debris can only enter the second frame body 2, thereby improving the protection effect of the inverter housing. In addition, the inverter housing in this embodiment adopts a rectangular structure, which has the effects of compact structure, space saving, and various installation methods. By designing the vents 14, components (devices) with high heat generation can be poured into the vents 14 to improve the heat dissipation effect. At the same time, sensitive components are installed in the closed environment of the first frame 1 to prevent contamination by foreign matter such as dust and water droplets. The optimized design of each structure can also make the heat dissipation fast, and can be used without capacity reduction at an ambient temperature of 50°. Through the design of the overcurrent protection circuit board 9, the load current can be monitored in real time during operation and automatically limited to not exceed the set overcurrent suppression point to prevent fault tripping caused by excessive current. It is more suitable for some loads with large inertia or drastic changes.

[0050] The present invention also provides an embodiment of a frequency converter, the housing of which adopts the frequency converter housing of the above embodiment. Since the frequency converter of this embodiment includes the frequency converter housing of the above embodiment, it can also achieve the technical effects achieved by the frequency converter housing of the above embodiment, and will not be described in detail here.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A frequency converter housing, characterized in that , the inverter housing includes: a first frame body, wherein one side of the first frame body is an open side in an open state, a side of the first frame body away from the open side is provided with a heat dissipation window extending therethrough, a bottom of the first frame body is provided with a wire inlet extending therethrough, and an elastic member fixed to the first frame body and covering the wire inlet, the elastic member being provided with a wire inlet slit extending therethrough; a second frame body, the second frame body being fixed to a side of the first frame body away from the opening side, and an air outlet being provided on a top of the second frame body; A door body, the door body cover is arranged on the first frame body and is detachably connected to the first frame body, the door body covering the opening side; a radiator, the radiator being fixed to the heat dissipation window and covering the heat dissipation window; A fan is fixed to the air outlet and covers the air outlet, and the fan is located above the radiator.

2. The inverter housing according to claim 1, characterized in that The door body includes a door frame having an observation window and covering the first frame body, and a cover plate covering the door frame and forming a detachable connection with the door frame, wherein the cover plate covers the observation window.

3. The inverter housing according to claim 2, characterized in that A first sealing strip is provided between the door frame and the first frame body, and the first sealing strip is arranged around the opening side.

4. The inverter housing according to claim 3, characterized in that A second sealing strip is provided between the cover plate and the door frame, and the second sealing strip is arranged around the observation window.

5. The inverter housing according to claim 1, characterized in that A bracket is fixed inside the first frame, and a plurality of clips and a plurality of limiting columns are provided at intervals on the side of the bracket close to the door body.

6. The inverter housing according to claim 1, characterized in that A side of the first frame away from the opening side is provided with a plurality of ventilation holes running through it and arranged in a row, and the ventilation holes are closer to the bottom of the first frame than the heat dissipation window.

7. The inverter housing according to claim 1, characterized in that The bottom of the second frame is provided with a plurality of heat dissipation holes passing through it at intervals.

8. The inverter housing according to claim 1, characterized in that The wire inlets include multiple ones and are spaced apart from each other, and the elastic members include multiple ones and are arranged in one-to-one correspondence with the multiple wire inlets.

9. The inverter housing according to claim 1, characterized in that The inverter housing also includes an overcurrent protection circuit board fixed to the side of the door body close to the first frame body and a display screen fixed to the door body and electrically connected to the overcurrent protection circuit board.

10. The inverter housing according to claim 9, characterized in that The overcurrent protection circuit board is provided with a button, and the button is exposed outward through the door body.

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