CN221930503U - An active filter - Google Patents

Abstract

The utility model discloses an active filter, which comprises a cabinet body, wherein a front door and a rear door are respectively connected to the cabinet body in a rotating way through hinges, a plurality of first rectangular through grooves are uniformly formed in the rear door, a ventilation filter screen is arranged in each first installation through groove, a fan is arranged on an air inlet of each ventilation filter screen, each fan is positioned in the cabinet body, a heat dissipation plate is arranged at the bottom of the rear door, a plurality of honeycomb heat dissipation holes are uniformly formed in the heat dissipation plate, a fixed support is arranged in the cabinet body, a plurality of partition plates are arranged on the fixed support at equal intervals, and a plurality of SVG modules are arranged on each partition plate. The utility model solves the problems that the normal operation of the active filter is affected once the temperature is higher due to the poor heat dissipation condition of the common electrical cabinet.

Description

An active filter

Technical Field

The utility model relates to an active filter.

Background Art

Active filter is a filter composed of RC elements and operational amplifiers, also known as RC active filter. Its function is to allow signals within a certain frequency range to pass through, and to suppress or sharply attenuate signals outside this frequency range. It can be used in information processing, data transmission, interference suppression, etc., but due to the frequency band limitation of operational amplifiers, this type of filter is mainly used in the low frequency range. In general, active filters are placed in special electrical cabinets. Ordinary electrical cabinets have poor heat dissipation conditions. Once the temperature is high, it will affect the normal operation of the active filter.

Utility Model Content

The purpose of the utility model is to overcome the existing defects and provide an active filter, which can achieve good heat dissipation effect and ensure the normal operation of the active filter.

The technical solution for achieving the above-mentioned purpose is: an active filter, including a cabinet, a front door and a rear door are rotatably connected to the cabinet by hinges, a plurality of first rectangular through grooves are evenly opened on the rear door, a ventilation filter is arranged in each of the first installation through grooves, a fan is arranged on the air inlet of each of the ventilation filter, each of the fans is located in the cabinet, a heat sink is arranged at the bottom of the rear door, a plurality of honeycomb heat dissipation holes are evenly opened on the heat sink, a second rectangular through groove is opened on the front door, an installation through groove is opened on the front door, a touch screen is threadedly connected to the installation through groove by screws, a fixed bracket is installed in the cabinet, a plurality of partitions are evenly installed on the fixed bracket, a plurality of SVG modules are installed on each of the partitions, there is a certain distance between the top of each of the SVG modules and the partition above, and a mounting bracket is provided on the fixed bracket.

Preferably, a surge protector, a fuse and a connection terminal are sequentially arranged on the mounting bracket.

Preferably, the SVG module is provided with a heat dissipation bracket, the front end surface of the heat dissipation bracket is mirror-imaged with two handrails, and the heat dissipation bracket is provided with a plurality of heat dissipation holes.

Preferably, an emergency stop switch is installed on the front door.

Preferably, a USB flash drive socket, a power terminal, a communication port, etc. are provided on the back of the touch screen.

Preferably, a mounting rod is provided on the fixing bracket, and a temperature switch and a temperature sensor are connected to the mounting rod.

Preferably, the front door is provided with a first door handle, and the rear door is provided with a second door handle.

The beneficial effects of the utility model are as follows: a plurality of first rectangular through slots are evenly provided on the rear door, a ventilation filter is provided in each first installation through slot, a fan is provided on the air inlet of each ventilation filter, each fan is located in the cabinet, a heat sink is provided at the bottom of the rear door, a plurality of honeycomb heat dissipation holes are evenly provided on the heat sink, a second rectangular through slot is provided on the front door, the second rectangular through slot can expose the entire SVG module, thus expanding the contact area with the external air for better heat dissipation, and simultaneously cooperating with the ventilation filter, the heat sink and the plurality of fans can accelerate the circulation of air in the cabinet, thus more efficiently dissipating heat for the active filter, thereby ensuring the normal operation of the device.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a front view of the utility model;

Fig. 2 is a rear view of the utility model;

FIG3 is a schematic diagram of a hidden back door of the utility model;

Figure 4 is a cross-sectional view of the side of the utility model;

FIG5 is a schematic diagram of the installation of the touch screen of the utility model;

FIG6 is a schematic diagram of FIG5 from another viewing angle;

FIG. 7 is a perspective view of the SVG module of the present invention.

In the figure: 1. cabinet; 2. front door; 3. rear door; 4. temperature switch; 5. touch screen; 6. fixing bracket; 7. partition; 8. surge protector; 9. ventilation filter; 10. fuse; 11. terminal block; 12. SVG module; 13. heat dissipation bracket; 14. handrail; 15. first door handle; 16. second door handle; 17. emergency stop switch; 18. mounting bracket.

DETAILED DESCRIPTION

The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

The utility model will be further described below in conjunction with the accompanying drawings.

As shown in FIGS. 1-7 , an active filter includes a cabinet 1 , a front door 2 , a rear door 3 , a touch screen 5 , a fixing bracket 6 , a plurality of partitions 7 and a plurality of SVG modules 12 .

Combined with the analysis of Figures 1-4, the cabinet body 1 is rotatably connected to the front door 2 and the rear door 3 by hinges, the front door 2 is provided with a first door handle 15, and the rear door 3 is provided with a second door handle 16. Both the front door 2 and the rear door 3 can be opened, so that it is convenient to carry out subsequent inspection or maintenance of the electrical components inside the cabinet body 1. A plurality of first rectangular through grooves are evenly provided on the rear door 3, and a ventilation filter 9 is provided in each first installation through groove. A fan (not shown in the figure) is provided on the air inlet of each ventilation filter 9, and each fan is located in the cabinet body 1. A heat sink is provided at the bottom of the rear door 3, and a plurality of honeycomb heat dissipation holes are evenly provided on the heat sink. An installation through groove is provided on the front door 2, and a touch screen 5 is connected to the installation through groove by screw threads. A fan is installed in the cabinet body 1. There is a fixed bracket 6, on which a plurality of partitions 7 are installed at equal intervals, and on each partition 7 a plurality of SVG modules 12 are installed (the SVG modules 12 are existing devices on the market). The plurality of SVG modules 12 can utilize SVG reactive compensation to compensate for harmonics and reactive currents with frequency and amplitude changes; there is a certain distance between the top of each SVG module 12 and the upper partition 7, and the certain distance between each SVG module 12 can effectively prevent heat accumulation when the plurality of SVG modules 12 are stacked together; the fixed bracket 6 is provided with a mounting bracket 18, on which a surge protector 8, a fuse 10 and a terminal block 11 are sequentially provided, and the surge protector 8 and the fuse 10 prevent excessive current and voltage from damaging the device.

According to the analysis in conjunction with FIG. 7 , a heat dissipation bracket 13 is provided on the SVG module 12 . The front end surface of the heat dissipation bracket 13 is mirrored with two handrails 14 . The two handrails 14 can conveniently lift the SVG module 12 and conveniently install the SVG module 12 on the corresponding partition 7 . A plurality of heat dissipation holes are provided on the heat dissipation bracket 13 . The plurality of heat dissipation holes can not only play a certain heat dissipation role, but also play a dustproof role, so that the SVG module 12 can be well protected.

Specifically, an emergency stop switch 17 is installed on the front door 2, and the emergency stop switch 17 is electrically connected to the electrical components inside the device, so that the device can be shut down in time when an emergency occurs. A U disk socket, a power terminal and a communication port are provided on the back of the touch screen 5.

Specifically, a mounting rod is provided on the fixed bracket 6, and a temperature switch 4 and a temperature sensor are connected to the mounting rod. The temperature sensor can detect the temperature change inside the cabinet 1 in real time. When the temperature inside the cabinet reaches 35 degrees, the temperature switch 4 will control the operation of the fan inside the cabinet 1 to dissipate heat efficiently. A second rectangular through groove is opened on the front door 2, and the second rectangular through groove can expose the entire SVG module 12, so that the contact area with the external air can be expanded to better dissipate heat.

The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims (7)

1. An active filter, characterized in that it comprises a cabinet (1), wherein the cabinet (1) is rotatably connected to a front door (2) and a rear door (3) by hinges, wherein the rear door (3) is evenly provided with a plurality of first rectangular through slots, each of which is provided with a ventilation filter (9), and each of which is provided with a fan at an air inlet, wherein each of the fans is located in the cabinet (1), and a heat sink is provided at the bottom of the rear door (3), wherein a plurality of honeycomb heat dissipation holes are evenly provided on the heat sink, and wherein the heat sink is provided with a plurality of first rectangular through slots, wherein each of the first rectangular through slots is provided with a ventilation filter (9), and wherein each of the first rectangular through slots is provided with a ventilation filter (9). A second rectangular through slot is provided on the front door (2), a mounting through slot is provided on the front door (2), a touch screen (5) is threadedly connected to the mounting through slot via a screw, a fixing bracket (6) is installed in the cabinet (1), a plurality of partitions (7) are installed on the fixing bracket (6) at equal intervals, a plurality of SVG modules (12) are installed on each of the partitions (7), a certain distance exists between the top of each of the SVG modules (12) and the partition (7) above, and a mounting bracket (18) is provided on the fixing bracket (6). 2. An active filter according to claim 1, characterized in that a surge protector (8), a fuse (10) and a connection terminal (11) are sequentially arranged on the mounting bracket (18). 3. An active filter according to claim 1, characterized in that a heat dissipation bracket (13) is provided on the SVG module (12), two handrails (14) are mirror-imaged on the front face of the heat dissipation bracket (13), and a plurality of heat dissipation holes are opened on the heat dissipation bracket (13). 4. An active filter according to claim 1, characterized in that an emergency stop switch (17) is installed on the front door (2). 5. An active filter according to claim 1, characterized in that a USB flash drive socket, a power supply terminal and a communication port are provided on the back of the touch screen (5). 6. An active filter according to claim 1, characterized in that the fixing bracket (6) is provided with a mounting rod, and the mounting rod is connected to a temperature switch (4) and a temperature sensor. 7. An active filter according to claim 1, characterized in that the front door (2) is provided with a first door handle (15), and the rear door (3) is provided with a second door handle (16).