Cooling fan device of control cabinet

Abstract

The utility model relates to a control cabinet cooling fan device which comprises a shell, one end of the shell is provided with a filtering structure, the other end of the shell is used for installing a fan, an elastic piece is installed in the shell, and an electromagnet is further installed in the shell. In the using state, when the electromagnet is powered on, the electromagnet attracts the elastic piece, and when the electromagnet loses power, the elastic piece rebounds towards one side of the filtering structure and knocks the filtering structure. The elastic piece and the electromagnet are installed in the shell, when the electromagnet is powered on, the electromagnet adsorbs the elastic piece, and when the electromagnet loses power, the elastic piece rebounds towards one side of the filtering structure and knocks the filtering structure, so that dust removal is conducted on the filtering structure, and the dust removal effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of control cabinet cooling fans, in particular to a control cabinet cooling fan device. Background Art

[0002] Due to the high ambient temperature in our company's area and the high heat generated by the electrical components within the control cabinets on our production lines, even though the inverters within the control cabinets have their own cooling fans, they still require heat exchange from within the cabinets via heat exchange cooling fans on the cabinets themselves. These cooling fans typically operate 24 hours a day, and after a single cycle, the filters on these fans can become clogged, restricting air flow within the cabinets and causing the inverters to overheat. The current solution to this problem is to tap the cooling fan filters to remove dust. However, this approach has the following drawbacks: first, it requires manual operation; second, when the clearance between the cooling fan and adjacent cabinets, equipment, or walls is small, manual operation from the outside is inconvenient. Furthermore, operating from within the cabinets would cause the cabinets to be live, posing a safety risk. To address this issue, a control cabinet cooling fan device was designed.

[0003] After searching, Chinese patent document CN205654616U, published (announced) on October 19, 2016, discloses a dust-removing cooling fan. The fan body is provided with an inner housing, the housing opening of which is provided with filter cotton and an outer mesh cover. The inner housing is square, and the inner diameter of the inner housing is provided with a circular ventilation mesh. The square corners of the outer diameter of the ventilation mesh are provided with mounting holes. The inner diameter of the inner housing is conical, and the vibration motor is mounted on the conical surface of the inner diameter of the inner housing. The outer mesh cover and filter cotton are mounted on the large housing opening of the inner housing, and the ventilation mesh is mounted on the small housing opening of the inner housing. The vibration motor is limited by limiting ribs on the conical surface of the inner diameter of the inner housing and the ventilation mesh surface. One end of the vibration motor abuts against the filter cotton, which is fixed to the large housing opening of the inner housing by the outer mesh cover. Its advantages are: the filter screen and filter cotton of this cooling fan are easy to remove dust, without having to remove them for cleaning. However, its disadvantages are: the vibration motor and filter cotton are only in contact during installation, and the inner cover is fixed to the electrical control cabinet during installation, which greatly reduces the vibration effect of the vibration motor. If the inner cover does not vibrate, the filter cotton will not vibrate either. In addition, the filter cotton is generally flexible, and the vibration motor only contacts the filter cotton through abutment. The vibration motor only vibrates the filter cotton locally, resulting in poor dust removal effect when using this structure. Utility Model Content

[0004] The purpose of the utility model is to provide a control cabinet cooling fan device, by installing a spring piece and an electromagnet inside the shell, when the electromagnet is energized, the electromagnet absorbs the spring piece, and when the electromagnet is de-energized, the spring piece rebounds to one side of the filter structure and knocks the filter structure, thereby removing dust from the filter structure and achieving a better dust removal effect.

[0005] To achieve the above-mentioned purpose, the utility model provides a control cabinet cooling fan device, including a shell, one end of the shell is provided with a filtering structure, and the other end is used to install a fan, a spring is installed inside the shell, and an electromagnet is also installed inside the shell; in use, when the electromagnet is energized, the electromagnet absorbs the spring, and when the electromagnet loses power, the spring rebounds to one side of the filtering structure and knocks the filtering structure.

[0006] The filtering structure is a supporting net arranged on the housing.

[0007] The filtering structure is a mesh cover installed on the shell.

[0008] A support net is provided in the shell on a side away from the electromagnet, a net cover is installed on the shell on one side of the support net, a clamping space is provided between the net cover and the support net, and the filtering structure is installed in the clamping space.

[0009] The filtering structure is filter cotton or filter mesh.

[0010] A mounting seat is provided in the middle of the shell, the mounting seat is connected and fixed to the shell through a rib plate, and the electromagnet is mounted on the mounting seat.

[0011] One end of the spring is fixedly connected to the shell, and the other end extends to the middle of the shell and is located in front of the electromagnet.

[0012] A striking block is provided on the shrapnel.

[0013] Compared with the prior art, the present invention has the following technical effects:

[0014] The utility model installs a spring piece and an electromagnet inside the shell. When the electromagnet is energized, the electromagnet absorbs the spring piece. When the electromagnet is de-energized, the spring piece rebounds to one side of the filter structure and knocks the filter structure, thereby removing dust from the filter structure and achieving a better dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description:

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

[0017] Figure 2It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 3 This is an exploded view of the mesh cover, housing, and filter cotton of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the housing installed on the mesh cover of the utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of a support net provided inside the housing of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure inside the shell of the utility model.

[0022] Reference numerals:

[0023] Net cover 1, shell 2, support net 21, clamping space 22, spring piece 23, knocking block 231, support structure 24, rib plate 241, mounting seat 242, electromagnet 25, fan 3, filter cotton 4. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] Example 1:

[0026] See Figure 4 、 5 6. A control cabinet cooling fan device comprises a housing 2, one end of which is provided with a filter structure, and the other end is used to install a fan 3. A spring piece 23 is installed inside the housing 2, and an electromagnet 25 is also installed inside the housing 2. In use, when the electromagnet 25 is energized, the electromagnet 25 absorbs the spring piece 23, and when the electromagnet 25 is de-energized, the spring piece 23 rebounds toward the side of the filter structure and strikes the filter structure. By installing the spring piece 23 and the electromagnet 25 inside the housing 2, when the electromagnet 25 is energized, the electromagnet 25 absorbs the spring piece 23, and when the electromagnet 25 is de-energized, the spring piece 23 rebounds toward the side of the filter structure and strikes the filter structure, thereby removing dust from the filter structure and achieving a better dust removal effect.

[0027] In this embodiment, a mounting base 242 is provided in the middle of the housing 2. The mounting base 242 is fixed to the housing 2 via a rib 241. The electromagnet 25 is mounted on the mounting base 242. The electromagnet 25 is an electromagnetic coil. The power supply line of the electromagnet 25 can extend from a hole on one side of the housing 2.

[0028] One end of the spring 23 is fixedly connected to the housing 2, and the other end extends to the middle of the housing 2 and is located in front of the electromagnet 25. The spring 23 is made of spring steel sheet, which can not only be adsorbed by the electromagnet 25, but also has a large rebound force after deformation. Figure 5 In the embodiment, one end of the spring piece 23 is inserted and fixed inside the housing 2 , and the other end extends to the front of the electromagnet 25 , and there is a certain distance between the spring piece 23 and the electromagnet 25 , and the distance of the distance is determined by the adsorption force of the electromagnet 25 .

[0029] Furthermore, a knocking block 231 is provided on the shrapnel 23. When knocking, the knocking block 231 contacts the filter structure, thereby being able to better vibrate the filter structure and improve the dust removal effect.

[0030] In this embodiment, see Figure 5 The filtering structure is a support mesh 21 provided on the housing 2. The spring 23 strikes the support mesh 21. The holes and gaps on the support mesh 21 are used to filter dust or flocculent matter in the air. The holes and gaps on the support mesh 21 can be set as needed and are not limited here.

[0031] Example 2:

[0032] The difference from the first embodiment is that: Figure 1 、 2 The filtering structure is a mesh cover 1 mounted on the housing 2. The spring piece 23 strikes the mesh cover 1. Similarly, the mesh cover 1 is provided with holes and gaps for filtering dust or flocculent matter in the air. In the embodiment, the mesh cover 1 is mounted on the housing 2 by bolts.

[0033] Example 3:

[0034] The difference from the first and second embodiments is that: Figure 3 A support mesh 21 is provided within the housing 2 on a side away from the electromagnet 25. A mesh cover 1 is mounted on the housing 2 on the side of the support mesh 21. A clamping space 22 is provided between the mesh cover 1 and the support mesh 21. The filter structure is mounted within the clamping space 22. The spring 23 strikes the support mesh 21, thereby causing the filter structure to vibrate.

[0035] In this embodiment, the filter structure is filter cotton 4 or a filter mesh.

[0036] It should be noted that, in this embodiment, the support net 21 and the net cover 1 clamp the filter structure, and the support net 21 and the net cover 1 are relatively thin. When the spring piece 23 hits the support net 21, the support net 21, the net cover 1 and the filter structure will vibrate.

[0037] The working principle or action process of the utility model is as follows:

[0038] See also Figure 5 After the cooling fan device of the present application is installed in the electrical control cabinet, the electromagnet 25 and the fan 3 are powered by a PLC. An intermittent dust removal timer is set in the PLC, for example, three days. When the timer expires, the fan 3 is controlled to blow air in the opposite direction toward the mesh cover 1, and the electromagnet 25 is simultaneously powered intermittently, for example, once every one second for about 10 seconds.

[0039] When the electromagnet 25 is powered on, the electromagnet 25 absorbs the spring piece 23, and the spring piece 23 bends and deforms. When the electromagnet 25 is powered off, the spring piece 23 rebounds under its own stress, thereby hitting the filter structure and shaking off the dust on the filter structure. The shaken dust is blown out by the fan 3.

[0040] After the dust removal time is up, the electromagnet 25 is powered off and the fan 3 resumes forward rotation.

Claims

1. A control cabinet cooling fan device, comprising a housing (2), one end of the housing (2) being provided with a filter structure, and the other end being used for mounting a fan (3), characterized in that: A spring piece (23) is installed inside the housing (2), and an electromagnet (25) is also installed inside the housing (2); in a use state, when the electromagnet (25) is energized, the electromagnet (25) absorbs the spring piece (23), and when the electromagnet (25) loses power, the spring piece (23) rebounds to one side of the filter structure and strikes the filter structure.

2. A control cabinet cooling fan device according to claim 1, characterized in that: The filtering structure is a support net (21) arranged on the housing (2).

3. A control cabinet cooling fan device according to claim 1, characterized in that: The filtering structure is a mesh cover (1) mounted on the housing (2).

4. A control cabinet cooling fan device according to claim 1, characterized in that: A support net (21) is provided in the housing (2) on a side away from the electromagnet (25), a net cover (1) is installed in the housing (2) on a side located on the support net (21), a clamping space (22) is provided between the net cover (1) and the support net (21), and the filtering structure is installed in the clamping space (22).

5. A control cabinet cooling fan device according to claim 4, characterized in that: The filtering structure is filter cotton (4) or a filter mesh.

6. A control cabinet cooling fan device according to claim 1, characterized in that: A mounting seat (242) is provided in the middle of the housing (2), the mounting seat (242) is connected and fixed to the housing (2) via a rib plate (241), and the electromagnet (25) is mounted on the mounting seat (242).

7. The control cabinet cooling fan device according to claim 1, characterized in that: One end of the spring (23) is fixedly connected to the housing (2), and the other end extends to the middle of the housing (2) and is located in front of the electromagnet (25).

8. A control cabinet cooling fan device according to claim 1 or 7, characterized in that: A striking block (231) is provided on the shrapnel (23).

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