Frequency converter with dustproof and waterproof structure

Abstract

The embodiment of the utility model introduces a frequency converter with a dustproof and waterproof structure. The frequency converter is composed of a box body, a baffle plate, a fixed plate and a sealing door. The fixing plate is installed in the box body and is provided with an electric device fixing area, and the baffle plate completely covers the fixing plate to protect electric device elements from being damaged by dust and water. The top end of the box body is provided with a fan direct-blowing fixing plate, and the bottom is provided with exhaust holes for discharging heat. Cover blocking pieces are evenly distributed on the two sides of the box body, and air holes are formed below the cover blocking pieces to promote air circulation and prevent dust from entering the box body. The blocking cover piece enables dust to slide down instead of entering. The frequency converter discharges water vapor through the arrangement of the fan, the vent hole and the exhaust hole, and accumulation damage is avoided. Meanwhile, the airflow barrier prevents dust from entering. When the sealing door is opened, the baffle effectively prevents external dust from entering, protects frequency conversion components, and ensures stable operation and long service life of the frequency converter. Electrical elements are effectively protected, the heat dissipation effect is improved, and the frequency converter performance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter equipment, and in particular to a frequency converter with a dustproof and waterproof structure. Background Technology

[0002] In the fields of industrial automation and power control, frequency converters are important power conversion devices, and their stability and reliability are crucial to the operation of the entire system. However, in practical applications, frequency converters often face harsh working environments, such as dust and humidity, which can adversely affect their performance and lifespan.

[0003] Traditional frequency converter designs often focus only on their electrical performance and functionality, neglecting to improve their dust and water resistance. In dusty environments, the electrical components of frequency converters are prone to dust accumulation, leading to problems such as poor heat dissipation and poor contact, and in severe cases, even short circuits. Utility Model Content

[0004] In view of the above situation, it is necessary to provide a frequency converter with a dustproof and waterproof structure that solves at least one of the above problems, including a housing, a baffle, a fixing plate, and a closed door. The closed door is hinged to the housing, the fixing plate is fixedly installed on the housing, and the fixing plate is provided with an area for fixing electrical components. The baffle is installed on the housing and covers the fixing plate. Covers are evenly arranged on both sides of the housing, and the cover has ventilation holes facing the bottom of the housing. A fan is installed at the top of the housing, and an exhaust hole is installed at the bottom of the housing. The fan is opposite to the exhaust hole and directly faces the fixing plate. A wiring hole is also provided at the bottom of the housing for wiring devices.

[0005] Preferably, the wiring device includes a card holder and a terminal block. The card holder has a card hole at its center, the terminal block is fixed in the card hole, the card holder is connected to the bottom of the housing by adhesive, and the terminal block passes through the wiring hole.

[0006] Preferably, grooves are evenly arranged on the outer side of the terminal block.

[0007] Preferably, a sealing strip is provided at the junction of the housing and the closed door.

[0008] Preferably, the number of fans is at least two, and they are arranged horizontally to cover the top of the housing.

[0009] Preferably, the baffle is provided with a plurality of wiring terminals, each of which is independently divided by a partition plate. Attached Figure Description

[0010] 1. Enclosure; 11. Vent; 12. Wiring hole; 2. Baffle; 3. Fixing plate; 31. Electrical component fixing area; 4. Enclosed door; 5. Cover; 51. Vent hole; 6. Fan; 7. Wiring device; 71. Card holder; 72. Terminal block; 721. Groove; 8. Sealing strip; 9. Terminal block.

[0011] Figure 1 This is a first-view structural schematic diagram of a frequency converter with a dustproof and waterproof structure according to an embodiment of the present invention.

[0012] Figure 2 This is a second-view structural schematic diagram of a frequency converter with a dustproof and waterproof structure according to an embodiment of the present invention.

[0013] Figure 3 This is a third-view structural diagram of a frequency converter with a dustproof and waterproof structure according to an embodiment of the present invention.

[0014] Figure 4 This is a schematic diagram of the internal structure of a frequency converter with a dustproof and waterproof structure according to an embodiment of this utility model.

[0015] Figure 5 This is a schematic diagram of the wiring device according to an embodiment of the present invention.

[0016] Figure 6 This is a schematic diagram of the structure of the cover component according to an embodiment of the present utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of the frequency converter with a dustproof and waterproof structure, in conjunction with the accompanying drawings and embodiments, provides further insight. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0018] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "center," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] 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.

[0020] Please see Figures 1 to 6 The inverter with a dustproof and waterproof structure according to an embodiment of the present invention includes a housing 1, a baffle 2, a fixing plate 3, and a closed door 4. The closed door 4 is hinged to the housing 1. The fixing plate 3 is fixedly installed on the housing 1 and has an electrical component fixing area 31. The baffle 2 is installed on the housing 1 and covers the fixing plate 3. Covers 5 are evenly arranged on both sides of the housing 1. The cover 5 has a vent 51 facing the bottom of the housing 1. A fan 6 is installed at the top of the housing 1. An exhaust port 11 is installed at the bottom of the housing 1. The fan 6 is opposite to the exhaust port 11 and directly faces the fixing plate 3. A wiring hole 12 is also provided at the bottom of the housing 1, and a wiring device 7 is installed in the wiring hole 12.

[0021] In the above embodiment, the frequency converter mainly consists of a housing 1, a baffle 2, a fixing plate 3, and a sealing door 4. The housing 1, as the main body of the entire structure, provides the necessary protective space. The sealing door 4 is connected to the housing 1 by hinges, allowing it to be easily opened or closed to meet maintenance and operation needs.

[0022] The mounting plate 3 is securely installed inside the enclosure 1, and it has an electrical component fixing area 31 for installing and fixing the core electrical components of the frequency converter. To ensure that these electrical components are protected from dust and moisture, a baffle 2 is installed inside the enclosure 1 and completely covers the mounting plate 3, forming a relatively enclosed space.

[0023] To enhance heat dissipation, a fan 6 is installed at the top of the enclosure 1, directly facing the electrical components on the mounting plate 3. During operation, the airflow generated by the fan 6 effectively removes heat from the electrical components and discharges it through the exhaust port 11 at the bottom of the enclosure 1, ensuring stable operation of the inverter. Simultaneously, baffles 5 are evenly arranged on both sides of the enclosure 1, with ventilation holes 51 positioned downwards on these baffles 5. These ventilation holes 51 allow airflow, further enhancing heat dissipation. Furthermore, because the ventilation holes 51 are located below the baffles 5, dust falling from the enclosure 1 will slide down the baffles 5 and will not enter the ventilation holes 51.

[0024] During operation, due to the action of the fan 6 and the placement of the ventilation holes 51 on both sides of the housing 1 and the exhaust hole 11 at the bottom, the moisture inside the housing 1 is discharged along the airflow, thus preventing moisture accumulation from damaging the frequency converter. At the same time, the exhaust hole 11 and the ventilation hole 51 form an airflow barrier, thereby preventing dust from entering the housing 1 from the exhaust hole 11 and the ventilation hole 51.

[0025] In addition, when the closed door 4 is opened, the air convection will generate a momentary suction inside the housing 1, which may suck in external dust. Due to the setting of the baffle 2, the sucked-in dust will be effectively blocked on the outside of the baffle 2, thereby preventing the frequency converter components on the fixed plate 3 from coming into contact with dust, ensuring the stable operation and long service life of the frequency converter.

[0026] Please see Figures 1 to 6 In another embodiment, the wiring device 7 includes a card holder 71 and a terminal block 72. The card holder 71 has a card hole at its center, and the terminal block 72 is fixed in the card hole. The card holder 71 is connected to the bottom of the housing 1 by glue, and the terminal block 72 passes through the wiring hole 12.

[0027] In the above embodiment, the card holder 71 has a central locking hole, and the terminal 72 is fixedly installed in the locking hole, with a portion of the terminal 72 protruding from the outside of the card holder 71. The card holder 71 is firmly connected to the bottom of the housing 1 with adhesive, and the terminal 72 extends through the wiring hole 12 at the bottom of the housing 1. The protruding design of the terminal 72 not only facilitates connection with external cables, but the protruding part of the terminal 72 can also prevent some dust from entering the interior of the housing 1. At the same time, the adhesive forms a sealing layer during the curing process, tightly adhering to the connection between the card holder 71 and the housing 1, further enhancing the dustproof effect and ensuring the cleanliness and safety of the wiring device 7 and the interior of the housing 1.

[0028] Please see Figures 1 to 6 In another embodiment, grooves 721 are evenly arranged on the outer side of the terminal 72.

[0029] In the above embodiments, the design of these grooves 721 increases the roughness of the surface of the terminal 72, improves the friction when connecting with external cables, and helps the cable to be more firmly fixed on the terminal 72, preventing poor connection or detachment due to loosening or vibration.

[0030] Please see Figures 1 to 6 In another embodiment, a sealing strip 8 is provided at the junction of the housing 1 and the closed door 4.

[0031] In the above embodiment, a sealing strip 8 is provided at the contact edge between the enclosure 1 and the closed door 4. When the closed door 4 is closed, the sealing strip 8 is compressed and tightly adhered to the edge of the enclosure 1, forming a continuous sealing barrier that effectively prevents external factors such as dust and moisture from entering the enclosure 1, thus ensuring the operating environment of the frequency converter.

[0032] Please see Figures 1 to 6 In another embodiment, the number of fans 6 is at least two, and they are arranged laterally to cover the top of the housing 1.

[0033] In the above embodiment, at least two fans 6 are arranged horizontally at the top of the housing 1, and these fans 6 fill the top space of the housing 1. This layout allows the airflow generated by the fans 6 to more evenly cover the electrical components on the fixed plate 3, improving heat dissipation efficiency and ensuring the stability and reliability of the frequency converter under high load operation.

[0034] Please see Figures 1 to 6 In another embodiment, the baffle 2 is provided with a plurality of wiring terminals 9, each of which is independently divided by a partition plate.

[0035] In the above embodiments, this design provides each terminal 9 with its own space, avoiding mutual interference during wiring, improving the accuracy and safety of wiring, and also facilitating later maintenance and repair.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A frequency converter with a dustproof and waterproof structure, characterized in that, The enclosure includes a housing, a baffle, a fixing plate, and a closed door. The closed door is hinged to the housing. The fixing plate is fixedly installed in the housing and has an area for fixing electrical components. The baffle is installed in the housing and covers the fixing plate. Covers are evenly arranged on both sides of the housing, and each cover has a ventilation hole facing downwards from the housing. A fan is installed at the top of the housing, and an exhaust hole is installed at the bottom of the housing. The fan is opposite to the exhaust hole and directly faces the fixing plate. A wiring hole is also provided at the bottom of the housing for wiring devices.

2. The frequency converter with a dustproof and waterproof structure as described in claim 1, characterized in that: The wiring device includes a card holder and a terminal block. The card holder has a card hole at its center, and the terminal block is fixed in the card hole. The card holder is connected to the bottom of the housing by glue, and the terminal block passes through the wiring hole.

3. The frequency converter with a dustproof and waterproof structure as described in claim 2, characterized in that: The outer side of the terminal block is provided with grooves evenly arranged.

4. The frequency converter with a dustproof and waterproof structure as described in claim 1, characterized in that: A sealing strip is provided at the junction of the box body and the closed door.

5. The frequency converter with a dustproof and waterproof structure as described in claim 1, characterized in that: The number of fans is at least two, and they are arranged horizontally to cover the top of the housing.

6. The frequency converter with a dustproof and waterproof structure as described in claim 1, characterized in that: The baffle is provided with multiple wiring terminals, and each wiring terminal is independently divided by a partition plate.

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