Electrical cabinet with dust removal structure
By setting up an electrostatic generator and permanent magnet group at the drainage hole of the electrical cabinet, the dust in the cold air is charged and deflected into the dust collection tank, the problem of dust accumulation during the heat dissipation of the electrical cabinet is solved, and the long-term and stable operation of the internal components of the electrical cabinet is achieved.
Patent Information
- Application Number
- CN202421108907.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-21
AI Technical Summary
During the heat dissipation process of existing electrical cabinets, dust entrained in the cold air is difficult to effectively remove, resulting in dust accumulation affecting the normal operation of components.
An electrical cabinet with a dust removal structure is designed. By setting up an electrostatic generator and a permanent magnet group at the drainage hole, the dust in the cold air is charged, and the dust is deflected into the dust collection tank through the action of a magnetic field, thereby removing dust.
It effectively avoids dust entering the interior of the electrical cabinet, ensures the service life of the internal components of the electrical cabinet, and improves the heat dissipation efficiency.
Smart Images
Figure CN222601841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electrical cabinet structures, in particular to an electrical cabinet with a dust removal structure. Background Art
[0002] There are many types of electrical equipment, among which electrical cabinets are made of steel to protect the normal operation of components. Electrical cabinets are often used to place various types of electrical components, which are connected to each other to achieve corresponding control purposes.
[0003] When the internal components of the electrical cabinet are working, a large amount of heat will be generated. The existing heat dissipation method of the electrical cabinet is usually to open a drainage hole, which is directly connected to the outside world to dissipate the heat to the outside world; or under the drainage of the first fan, cold air is introduced from the outside world through the drainage hole, and the cold air enters the electrical cabinet to neutralize the high-temperature air in the electrical cabinet, and flows out of the electrical cabinet from the first fan to take away the heat.
[0004] During this process, cold air will carry dust into the electrical cabinet. After long-term operation, the dust will accumulate in the electrical cabinet and affect the internal components of the electrical cabinet, such as static electricity, thereby affecting the normal operation of the internal components of the electrical cabinet. For this reason, technical personnel in this field usually install a filter or downward shutters at the drainage hole. The filter and the shutter cannot completely block the dust in the air, and the dust will gather at the filter and the shutter. When the accumulation amount is large, the filtering effect becomes worse (the ability to adhere to dust is reduced), so that dust still enters after long-term use. Utility Model Content
[0005] The purpose of the utility model is to provide an electrical cabinet with a dust removal structure to address the above-mentioned problems, which can remove dust entrained in the cold air entering from the heat dissipation holes, effectively prevent dust from entering the interior of the electrical cabinet, and ensure the service life of the internal components of the electrical cabinet.
[0006] The technical solution adopted by the utility model is as follows: an electrical cabinet with a dust removal structure, comprising a cabinet body, a drainage hole and a first fan are opened on the side of the cabinet body, the drainage hole has an inlet and an outlet, the inlet is located on the outer wall of the cabinet body, and the outlet is located on the inner wall of the cabinet body; an electrostatic generator and a permanent magnet group are arranged at the inlet, the electrostatic generator is closer to the inlet than the permanent magnet group, and the permanent magnet group can generate a magnetic field perpendicular to the axis of the drainage hole and parallel to the direction of gravity; a dust collecting groove is arranged between the inlet and the outlet, the depth direction of the dust collecting groove is parallel to the direction of the magnetic field, and the notch of the dust collecting groove is located at the lower side of the drainage hole and is connected to the drainage hole.
[0007] Furthermore, the permanent magnet group includes two permanent magnets, which are respectively mounted on the upper side and the lower side of the drainage hole, and the magnetic poles of the two permanent magnets facing each other are opposite.
[0008] Furthermore, the spatial position of the bottom edge of the outlet is higher than the bottom edge of the inlet.
[0009] Furthermore, the spatial position of the bottom edge of the outlet is higher than the top edge of the inlet.
[0010] Furthermore, a baffle is provided at the outlet, the baffle is hinged to the inner wall of the cabinet, and the geometric dimensions of the baffle are larger than the geometric dimensions of the outlet.
[0011] Furthermore, the baffle is hinged to the cabinet body via a first torsion spring.
[0012] Furthermore, a cleaning port is provided on the outer side wall of the cabinet body, and the cleaning port penetrates the slot wall of the dust collecting slot and is located at the bottom of the dust collecting slot; a closing door for closing the cleaning port is provided at the cleaning port.
[0013] Furthermore, one end of the closed door is hinged to the outer wall of the cabinet through a second torsion spring, and the geometric dimensions of the closed door are larger than those of the cleaning port; or the closed door is slidably connected to the outer wall of the cabinet.
[0014] Furthermore, the drainage hole is arranged near the top of the cabinet, and the first fan is arranged near the bottom of the cabinet; or the drainage hole is arranged near the bottom of the cabinet, and the first fan is arranged near the top of the cabinet.
[0015] Furthermore, there are multiple drainage holes, and the multiple drainage holes are evenly distributed along the circumference of the cabinet, or / and evenly distributed along the height direction of the cabinet.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0017] 1. The utility model uses the first fan to draw air outward, and the cold air from the outside enters the cabinet through the drainage hole, so as to neutralize and replace the hot air in the cabinet with the cold air, thereby releasing the heat inside the cabinet and effectively preventing the temperature inside the cabinet from being too high;
[0018] 2. The utility model arranges an electrostatic generator and a permanent magnet group at the drainage hole. The electrostatic generator charges the dust entrained in the cold air. When the charged dust passes through the magnetic field formed by the permanent magnet group, it is deflected by the Lorentz force and falls into the dust collecting tank, thereby achieving the purpose of removing dust from the cold air.
[0019] 3. The setting of the magnetic field direction of the utility model can make the movement deflection of dust affected by the superposition of Lorentz force and gravity. The Lorentz force does not need to overcome the dust's own gravity, thereby ensuring the stability of the deflection into the dust collecting trough; the setting of the depth direction and position of the dust collecting trough can prevent the dust from being rolled up again under the action of its own gravity, thereby ensuring the cleanliness of the cold air entering the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention will be described by way of examples with reference to the accompanying drawings, in which:
[0021] Figure 1 It is a partial cross-sectional structural schematic diagram of the utility model;
[0022] Figure 2 for Figure 1 An enlarged schematic diagram of an implementation method at A in the middle;
[0023] Figure 3 for Figure 1 An enlarged schematic diagram of another embodiment at A in the middle;
[0024] Figure 4 It is a three-dimensional schematic diagram of the appearance of the utility model;
[0025] Markings in the figure: 1-cabinet; 2-drainage hole; 21-inlet; 22-outlet; 3-cleaning port; 4-first fan; 5-static generator; 6-dust collecting tank; 7-permanent magnet; 8-baffle; 81-first torsion spring; 9-closing door; 91-second torsion spring. DETAILED DESCRIPTION
[0026] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.
[0027] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.
[0028] Example 1
[0029] like Figure 1-Figure 4As shown, an electrical cabinet with a dust removal structure includes a cabinet 1, a drainage hole 2 and a first fan 4 are opened on the side of the cabinet 1, the first fan 4 draws out the hot air in the cabinet 1, and the cabinet 1 is underpressured relative to the outside of the cabinet 1; the drainage hole 2 has an inlet 21 and an outlet 22, wherein the inlet 21 is located on the outer wall of the cabinet 1 and connected to the outside; the outlet 22 is located on the inner wall of the cabinet 1 and connected to the inside of the cabinet 1; the underpressure in the cabinet 1 causes the cold air from the outside to enter the cabinet 1 through the drainage hole 2, so as to achieve the neutralization of the cold air and replace the hot air in the cabinet 1, thereby achieving the purpose of releasing the heat inside the cabinet 1 and effectively avoiding the internal temperature of the cabinet 1 from being too high.
[0030] In this embodiment, an electrostatic generator 5 and a permanent magnet group are provided at the inlet 21. The electrostatic generator 5 can charge the dust and is an existing device, which will not be described in detail in this specification. The electrostatic generator 5 is closer to the inlet 21 than the permanent magnet group. The permanent magnet group can generate a magnetic field perpendicular to the axis of the drainage hole 2 and parallel to the direction of gravity. A dust collecting groove 6 is provided between the inlet 21 and the outlet 22. The depth direction of the dust collecting groove 6 is parallel to the direction of the magnetic field. The notch of the dust collecting groove 6 is located at the lower side of the drainage hole 2 and is connected to the drainage hole 2. The specific process of removing dust from the cold air is as follows.
[0031] The cold air carrying dust enters the drainage hole 2 from the inlet 21, moves along the axis of the drainage hole 2, first passes through the position of the electrostatic generator 5, the electrostatic generator 5 makes the dust charged, and then enters the magnetic field formed by the permanent magnet group. The charged dust will be affected by the Lorentz force when moving in the magnetic field. The superposition of the Lorentz force and gravity causes the movement of the charged dust to be deflected in the direction of gravity, and then falls into the dust collecting groove 6 and is collected by the dust collecting groove 6, thereby achieving the purpose of removing dust in the cold air, effectively preventing dust from entering the inner wall of the electrical cabinet, and ensuring the service life of the internal components of the electrical cabinet.
[0032] It should be noted that the direction of the magnetic field is set to be along the direction of gravity, so that the movement deflection of the dust can be affected by the combined effect of the Lorentz force and gravity. The Lorentz force does not need to overcome the dust's own gravity, thereby ensuring the stability of the dust deflection into the dust collecting trough 6; the depth direction and position setting of the dust collecting trough 6 can prevent the dust from being drawn into the cold air again under the action of its own gravity, thereby ensuring the cleanliness of the cold air entering the cabinet 1.
[0033] Furthermore, the first fan 4 and the electrostatic generator 5 can be connected to an external power source or to a power source inside the cabinet 1 to obtain electrical energy for continuous operation.
[0034] Furthermore, the first fan 4 and the electrostatic generator 5 can both be connected to a controller, and the controller is connected to an external power supply or an internal power supply of the cabinet 1, that is, the first fan 4 and the electrostatic generator 5 obtain power through the controller, and the controller controls whether the first fan 4 and the electrostatic generator 5 are working, thereby improving the automation effect. Of course, the first fan 4 and the electrostatic generator 5 can also be turned on / off manually without being connected to the controller.
[0035] Furthermore, the controller is preferably a compilable controller such as a PLC or a single-chip microcomputer.
[0036] Example 2
[0037] Based on Example 1, a specific implementation method that can be implemented is further proposed.
[0038] like Figure 2 , Figure 3 As shown, the permanent magnet group includes two permanent magnets 7, which are respectively installed on the upper side and the lower side of the drainage hole 2, and the magnetic poles of the two permanent magnets 7 are opposite to each other, that is, a magnetic field is formed between the two permanent magnets 7.
[0039] Preferably, the permanent magnet 7 located on the upper side has its N pole facing the S pole of the permanent magnet 7 located on the lower side, and the direction of the magnetic field lines of force is vertically downward; the electrostatic generator 5 selects a positive charge generator so that the dust has a positive charge, so that the direction of the Lorentz force on the dust is downward along the gravity; or the permanent magnet 7 located on the upper side has its S pole facing the N pole of the permanent magnet 7 located on the lower side, and the direction of the magnetic field lines of force is vertically upward; the electrostatic generator 5 selects a negative charge generator so that the dust has a negative charge, so that the direction of the Lorentz force on the dust is downward along the gravity.
[0040] Example 3
[0041] Based on any one of the implementations in Examples 1-2, a specific implementation method that can be implemented is further proposed.
[0042] A feasible implementation method is as follows: Figure 2 As shown, the spatial position of the bottom edge line of the outlet 22 is higher than the bottom edge line of the inlet 21, and the dust can be blocked by the bottom of the outlet 22, further reducing the possibility of dust entering the cabinet 1 with the cold air, and improving the stability of dust entering the dust collecting trough 6, that is, for the dust near the top of the inlet 21, the dust will collide with the bottom of the outlet 22 after deflection, and then fall into the dust collecting trough 6 under the obstruction of the bottom of the outlet 22.
[0043] Furthermore, if Figure 3 As shown, the spatial position of the bottom edge of the outlet 22 is higher than the top edge of the inlet 21 , so that the following two effects are achieved to ensure that 100% of the dust falls into the dust collecting trough 6 .
[0044] First, for dust near the top of the inlet 21, the dust will collide with the bottom of the outlet 22 after being deflected, and then fall into the dust collecting tank 6 under the obstruction of the bottom of the outlet 22; even if the electrostatic generator 5 fails and some dust is not charged, the dust will collide with the bottom of the outlet 22 without being deflected, and then fall into the dust collecting tank 6;
[0045] Second, in order to achieve that the spatial position of the bottom edge of the outlet 22 is higher than the bottom edge of the inlet 21, there must be a vertical bending section between the inlet 21 and the outlet 22. The bending section will guide the direction of the cold air flow to change, thereby reducing the flow rate of the cold air, making the kinetic energy of the cold air insufficient to carry the dust flow, further increasing the sedimentation of the dust, so that it falls into the dust collecting trough 6.
[0046] Example 4
[0047] Based on any one of the implementations in Examples 1-3, a specific implementation method that can be implemented is further proposed.
[0048] A feasible implementation manner, a baffle 8 is provided at the outlet 22, the upper end of the baffle 8 is hinged to the inner wall of the cabinet 1, the geometric dimensions of the baffle 8 are larger than the geometric dimensions of the outlet 22, and the baffle 8 can close the outlet 22 under the action of its own gravity to prevent the air from carrying dust into the cabinet 1 through the drainage hole 2 when the first fan 4 is not started (i.e., when the cabinet 1 does not need to discharge heat); when the first fan 4 is started, due to the underpressure state in the cabinet 1, the baffle 8 will not completely close the outlet 22, thereby not affecting the introduction of cold air; on the other hand, the baffle 8 makes the drainage hole 2 a one-way hole, only allowing air to enter the cabinet 1 from the outside of the cabinet 1.
[0049] Furthermore, the baffle 8 is hinged to the cabinet 1 through a first torsion spring 81, and the stability of the baffle 8 closing the outlet 22 is improved by the elastic force of the first torsion spring 81; specifically, the baffle 8 is hinged to the inner wall of the cabinet 1 through a rotating shaft, one end of the first torsion spring 81 is fixedly connected to the baffle 8, and the other end of the first torsion spring 81 is fixedly connected to the inner wall of the cabinet 1, and the first torsion spring 81 is sleeved on the rotating shaft.
[0050] It should be noted that the elastic force of the first torsion spring 81 needs not to affect the opening of the baffle 8 in the under-pressure state.
[0051] Example 5
[0052] Based on any one of the implementation methods in Examples 1-4, a specific implementation method that can be implemented is further proposed.
[0053] A feasible implementation manner is that a cleaning port 3 is opened on the outer wall of the cabinet 1, and the cleaning port 3 passes through the slot wall of the dust collecting slot 6 and is located at the bottom of the dust collecting slot 6; a closing door 9 for closing the cleaning port 3 is provided at the cleaning port 3; the closing door 9 can be opened to clean the dust accumulated in the dust collecting slot 6; after cleaning, the closing door 9 is closed so as not to affect the drainage of cold air by the drainage hole 2, that is, to prevent the cold air from entering the cabinet 1 after passing through the cleaning port 3, the dust collecting slot 6, and the outlet 22 with dust.
[0054] Furthermore, regarding the connection method between the closed door 9 and the cabinet 1, there are at least the following two feasible implementation methods.
[0055] A first feasible implementation manner is that one end of the closed door 9 is hinged to the outer wall of the cabinet 1 by a second torsion spring 91, and the geometric dimensions of the closed door 9 are larger than the geometric dimensions of the cleaning port 3. The closed door 9 is hinged to the cabinet 1 by the second torsion spring 91 just as the baffle 8 is hinged to the cabinet 1 by the first torsion spring 81, which will not be elaborated here; a normally closed state can be achieved; when the dust collecting tank 6 needs to be cleaned, the operator rotates the closed door 9 to overcome the elastic potential energy of the second torsion spring 91 to open the cleaning port 3.
[0056] A second feasible implementation manner is that a slide rail is provided on the cabinet 1, and the closed door 9 is slidably connected to the slide rail, that is, the closed door 9 is slidably connected to the cabinet 1; the cleaning port 3 is opened and closed by sliding the closed door 9.
[0057] Example 6
[0058] Based on any one of the implementation methods in Examples 1-5, a specific implementation method that can be implemented is further proposed.
[0059] A feasible implementation manner is that the drainage hole 2 is arranged near the top of the cabinet 1, and the first fan 4 is arranged near the bottom of the cabinet 1; cold air flows in from the top of the cabinet 1, flows out from the bottom of the cabinet 1, passes through the entire cabinet 1, and improves the heat dissipation efficiency inside the cabinet 1; or the drainage hole 2 is arranged near the bottom of the cabinet 1, and the first fan 4 is arranged near the top of the cabinet 1, cold air flows in from the bottom of the cabinet 1, flows out from the top of the cabinet 1, passes through the entire cabinet 1, and improves the heat dissipation efficiency inside the cabinet 1.
[0060] A feasible implementation method is as follows: Figure 4 As shown, there are multiple drainage holes 2, and the multiple drainage holes 2 are evenly distributed along the circumference of the cabinet 1, or / and evenly distributed along the height direction of the cabinet 1, so as to improve uniformity.
[0061] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.
Claims
1. An electrical cabinet with a dust removal structure, characterized in that: The invention comprises a cabinet (1), wherein a drainage hole (2) and a first fan (4) are provided on the side of the cabinet (1), wherein the drainage hole (2) has an inlet (21) and an outlet (22), wherein the inlet (21) is located on the outer wall of the cabinet (1), and the outlet (22) is located on the inner wall of the cabinet (1); an electrostatic generator (5) and a permanent magnet group are provided at the inlet (21), wherein the electrostatic generator (5) is closer to the inlet (21) than the permanent magnet group, and the permanent magnet group can generate a magnetic field perpendicular to the axis of the drainage hole (2) and parallel to the direction of gravity; and a dust collecting groove (6) is provided between the inlet (21) and the outlet (22), wherein the depth direction of the dust collecting groove (6) is parallel to the direction of the magnetic field, and the notch of the dust collecting groove (6) is located at the lower side of the drainage hole (2) and is connected to the drainage hole (2).
2. The electrical cabinet according to claim 1, characterized in that: The permanent magnet group comprises two permanent magnets (7), which are respectively mounted on the upper side and the lower side of the drainage hole (2), and the two permanent magnets (7) have opposite magnetic poles.
3. The electrical cabinet according to claim 1, characterized in that: The spatial position of the bottom edge line of the outlet (22) is higher than the bottom edge line of the inlet (21).
4. The electrical cabinet according to claim 1 or 3, characterized in that: The spatial position of the bottom edge of the outlet (22) is higher than the top edge of the inlet (21).
5. The electrical cabinet according to claim 1, characterized in that: A baffle (8) is provided at the outlet (22), the baffle (8) is hinged to the inner wall of the cabinet (1), and the geometric dimensions of the baffle (8) are greater than the geometric dimensions of the outlet (22).
6. The electrical cabinet according to claim 5, characterized in that: The baffle (8) is hinged to the cabinet (1) via a first torsion spring (81).
7. The electrical cabinet according to claim 1, characterized in that: A cleaning opening (3) is provided on the outer wall of the cabinet (1); the cleaning opening (3) penetrates the wall of the dust collecting trough (6) and is located at the bottom of the dust collecting trough (6); a closing door (9) for closing the cleaning opening (3) is provided at the cleaning opening (3).
8. The electrical cabinet according to claim 7, characterized in that: One end of the closed door (9) is hinged to the outer wall of the cabinet (1) via a second torsion spring (91), and the geometric dimensions of the closed door (9) are greater than the geometric dimensions of the cleaning port (3); or the closed door (9) is slidably connected to the outer wall of the cabinet (1).
9. The electrical cabinet according to claim 1, characterized in that: The drainage hole (2) is arranged near the top of the cabinet (1), and the first fan (4) is arranged near the bottom of the cabinet (1); or the drainage hole (2) is arranged near the bottom of the cabinet (1), and the first fan (4) is arranged near the top of the cabinet (1).
10. The electrical cabinet according to claim 1, characterized in that: The number of the drainage holes (2) is multiple, and the multiple drainage holes (2) are evenly distributed along the circumference of the cabinet (1), or / and evenly distributed along the height direction of the cabinet (1).