Shielding machine room cut-off waveguide ventilating window

Abstract

The utility model discloses a cut-off waveguide ventilating window of a shielding machine room. The cut-off waveguide ventilating window comprises a foaming metal ventilating window used for arranging the shielding machine room, the foamed metal ventilating window is welded on a top steel plate of the shielding machine room through welding rods by gas welding; the foamed metal ventilation window further comprises a first aluminum magnesium alloy plate, a second aluminum magnesium alloy plate, a first ventilation hole and a second ventilation hole, and the second aluminum magnesium alloy plate is installed on one side of the first aluminum magnesium alloy plate. Light metal nickel is adopted as a base material, nickel-based foaming metal micropores are small in size, the pore diameter range is 0.1 mm-10 mm (the pore number range of corresponding PP I per inch is 5-120), the foaming metal micropore size on the surface of the honeycomb type ventilation piece is required to be controlled within 0.3 mm, and the honeycomb type ventilation piece has high broadband shielding effectiveness and dust filtering performance within the limited thickness; and the high-permeability metal net plated with nickel on the surface provides relatively high low-frequency magnetic shielding performance.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation windows, in particular to a shielded machine room cutoff waveguide ventilation window. Background Art

[0002] Shielded room cutoff waveguide ventilation windows are specially designed for electromagnetic shielding rooms. They can effectively prevent electromagnetic wave leakage while ensuring air circulation. This type of ventilation window is commonly used in environments that require high electromagnetic shielding, such as data centers, communication equipment rooms, and laboratories.

[0003] In environments with strong electromagnetic pulses, such as those caused by lightning, waveguide ventilation windows may be interfered with by electromagnetic pulses. This interference may degrade the electromagnetic shielding performance of the waveguide ventilation windows and even damage the equipment inside the computer room.

[0004] The sealing performance of the waveguide ventilation windows is also a key factor in ensuring a stable electromagnetic environment within the equipment room. If the sealing performance is poor, external electromagnetic interference may enter the equipment room through the ventilation windows, affecting the normal operation of the equipment.

[0005] Furthermore, the design of waveguide ventilation windows must consider their frequency cutoff characteristics, which determine the different shielding effects on electromagnetic waves of different frequencies. Improperly designed frequency cutoff characteristics may result in ineffective shielding of electromagnetic waves in certain frequency bands, thus affecting the electromagnetic environment within the equipment room.

[0006] However, while existing technologies solve this problem, they also have other problems:

[0007] Currently, existing cutoff waveguide vent designs utilize the waveguide structure to behave like a high-pass filter. Signals above the cutoff frequency are allowed to pass, while signals below the cutoff frequency are blocked or attenuated. This design significantly reduces the impact of electromagnetic pulses on equipment within the computer room when the frequency of the electromagnetic pulse falls below the waveguide's cutoff frequency.

[0008] However, there are obvious shortcomings: when the spectrum of electromagnetic pulses is very wide, it may not be possible to completely block electromagnetic pulses of all frequencies; in extreme cases, high-intensity electromagnetic pulses may still affect the equipment inside the computer room.

[0009] The sealing problem is mainly solved by using a honeycomb design. Through the waveguide bundle composed of many waveguides, an effective sealing structure is formed to reduce the leakage of electromagnetic signals. The materials selected are aluminum alloy and nickel, which have good mechanical strength and sealing performance.

[0010] However, after long-term use, the sealing performance may deteriorate due to factors such as material aging and wear, and tiny gaps may exist at the connection between the frame of the ventilation window and the waveguide, affecting the sealing effect.

[0011] In the design of cutoff waveguide vents, the waveguide's cutoff frequency is a key parameter. By properly designing the waveguide's size and shape, its cutoff frequency can be controlled, thereby achieving shielding against electromagnetic waves within a specific frequency range.

[0012] However, the determination of the cutoff frequency requires precise calculation based on actual needs and electromagnetic environment, and the design complexity is relatively high. Utility Model Content

[0013] The purpose of the utility model is to provide a shielded machine room cutoff waveguide ventilation window. The utility model adopts lightweight metal nickel as the basic material. The micropore size of the nickel-based foamed metal is small, with a pore size range of 0.1mm-10mm (corresponding to a PPI pore number range of 5-120), and has high broadband shielding efficiency and dust filtering performance within a limited thickness; the high magnetic permeability metal mesh with nickel plating on the surface provides high low-frequency magnetic shielding performance, while also protecting the foamed metal (relatively soft in texture); so as to solve the problems raised in the above-mentioned background technology.

[0014] To achieve the above objectives, the present invention provides the following technical solutions:

[0015] A shielded machine room cutoff waveguide ventilation window, comprising:

[0016] Foamed metal ventilation windows used for shielding room installation; the foamed metal ventilation windows are gas-welded to the top steel plate of the shielding room through welding rods;

[0017] The foamed metal ventilating window further includes a first aluminum-magnesium alloy plate, a second aluminum-magnesium alloy plate, a first ventilating hole, and a second ventilating hole. The second aluminum-magnesium alloy plate is mounted on one side of the first aluminum-magnesium alloy plate. The first aluminum-magnesium alloy plate and the second aluminum-magnesium alloy plate are evenly distributed with interconnected first ventilating holes, second ventilating holes, and third ventilating holes.

[0018] A ventilator for shielding air circulation in the machine room is provided inside the second vent.

[0019] Preferably, a bracket for accommodating a ventilator is installed inside the second ventilating opening, and the ventilator is installed at the inner center of the bracket.

[0020] Preferably, the output end of the ventilator is equipped with fan blades, and a protective mesh cover is provided below the ventilator.

[0021] Preferably, the protective mesh cover is located at the bottom end of the second ventilation hole opened at the bottom of the first aluminum-magnesium alloy plate.

[0022] Preferably, four symmetrical groups of threaded holes are opened at both ends of the surface of the first aluminum-magnesium alloy plate, and the threaded holes penetrate into the second aluminum-magnesium alloy plate, and the internal threads of the threaded holes are connected with screws.

[0023] Preferably, the protective mesh cover is fixed in a threaded hole provided on the first aluminum-magnesium alloy plate by screw threads.

[0024] Preferably, the apertures of the first ventilation hole, the second ventilation opening and the third ventilation opening are set to 0.1 mm-10 mm.

[0025] Preferably, the apertures of the first ventilation holes, the second ventilation holes and the third ventilation holes form a conductive network when electromagnetic waves pass through them.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This utility model uses lightweight metal nickel as the basic material. The micropore size of the nickel-based foamed metal is small, with a pore size range of 0.1mm-10mm (corresponding to a PPI pore number range of 5-120). It has high broadband shielding efficiency and dust filtering performance within a limited thickness; the high magnetic permeability metal mesh with nickel plating on the surface provides high low-frequency magnetic shielding performance while also protecting the foamed metal (which has a relatively soft texture).

[0028] Foamed metal ventilation windows are made of foamed metal ventilation panels. Among all shielding and ventilation components, they have the thinnest thickness required to achieve a certain shielding efficiency, the best resistance to electrochemical corrosion, and the best comprehensive performance in ventilation, shielding, dustproofing, etc. They are especially suitable for portable electronic devices such as portable computers that are subject to strict space restrictions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the installation position structure of the cutoff waveguide ventilation window of the utility model;

[0030] Figure 2 This is a schematic diagram of the installation structure of the cutoff waveguide ventilation window of the utility model;

[0031] Figure 3 This is a schematic diagram of the three-hole top view structure of the cutoff waveguide ventilation window of the utility model;

[0032] Figure 4 This is a schematic diagram of the three-hole upward-looking structure of the cutoff waveguide ventilation window of the utility model;

[0033] Figure 5 for Figure 4 Schematic diagram of the internal ventilator structure;

[0034] Figure 6 This is a schematic side view of the three-hole structure of the cutoff waveguide ventilation window of the utility model.

[0035] In the figure: 1. Foam metal ventilation window; 101. First aluminum-magnesium alloy plate; 2. First ventilation port; 201. Second ventilation port; 202. Third ventilation port; 3. Second aluminum-magnesium alloy plate; 4. Bracket; 5. Ventilator; 6. Protective mesh cover; 7. Screw; 8. Threaded hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figures 1 to 6 The utility model provides a technical solution: a shielded room cutoff waveguide ventilation window, comprising: a foamed metal ventilation window 1 for placement in the shielded room; the foamed metal ventilation window 11 is gas-welded to the top steel plate of the shielded room through welding rods;

[0038] Furthermore, the foamed metal ventilating window 1 further includes a first aluminum-magnesium alloy plate 101, a second aluminum-magnesium alloy plate 3, a first ventilating hole, and a second ventilating hole. The second aluminum-magnesium alloy plate 3 is mounted on one side of the first aluminum-magnesium alloy plate 101. The first aluminum-magnesium alloy plate 101 and the second aluminum-magnesium alloy plate 3 are evenly distributed with interconnected first ventilating holes 2, second ventilating holes 201, and third ventilating holes 202.

[0039] In addition, a ventilator 5 for shielding the air circulation in the machine room is provided inside the second ventilator 201, a bracket 4 for placing the ventilator 5 is installed inside the second ventilator 201, the ventilator 5 is installed in the inner center of the bracket 4, the output end of the ventilator 5 is installed with fan blades, and a protective mesh cover 6 is provided below the ventilator 5, and the protective mesh cover 6 is located at the bottom end of the second ventilator 201 opened at the bottom of the first aluminum-magnesium alloy plate 101.

[0040] The protective mesh cover 6 is threadedly fixed to the threaded hole 8 provided on the first aluminum-magnesium alloy plate 101 by screws 7; by providing the protective mesh cover 6, it is convenient to cover the ventilator 5 for protection, and it is also convenient to disassemble and replace it.

[0041] This utility model uses lightweight metal nickel as the basic material. The micropore size of the nickel-based foamed metal is small, with a pore size range of 0.1mm-10mm (corresponding to a PPI pore number range of 5-120). It has high broadband shielding efficiency and dust filtering performance within a limited thickness; the high magnetic permeability metal mesh with nickel plating on the surface provides high low-frequency magnetic shielding performance while also protecting the foamed metal (which has a relatively soft texture).

[0042] The foamed metal ventilation window 1 is made of foamed metal ventilation panels. Among all shielding and ventilation components, it has the thinnest thickness required to achieve a certain shielding efficiency, the best resistance to electrochemical corrosion, and the best comprehensive performance of ventilation, shielding, dustproofing, etc. It is especially suitable for portable electronic devices such as portable computers that are subject to strict space restrictions.

[0043] The shielding principle of the foamed metal vent 1 relies primarily on its porous structure and the conductivity of the metal matrix. Within the pores of the vent, the metal matrix forms a randomly distributed conductive network. When electromagnetic waves pass through the vent, they interact with this conductive network, effectively absorbing and reflecting them. By controlling the size and distribution density of the pores, high shielding effectiveness can be achieved with a random distribution within a range of 200μm to 500μm.

[0044] At the same time, by starting the ventilator 5, its ventilation end drives the fan blades to rotate, so as to improve the ventilation effect in the shielding room and increase the efficiency of air flow. However, the configuration power setting of the ventilator 5 is: not less than 40W; air volume: not less than 150 cubic meters per hour; connected to the dynamic environment system of the machine room, and uniformly controlled by the dynamic environment system of the machine room.

[0045] Four symmetrical groups of threaded holes 8 are provided at both ends of the surface of the first aluminum-magnesium alloy plate 101, and the threaded holes 8 penetrate into the second aluminum-magnesium alloy plate 3. The internal threads of the threaded holes 8 are connected with screws 7, so that the first aluminum-magnesium alloy plate 101 and the second aluminum-magnesium alloy plate 3 can be easily disassembled and assembled.

[0046] The apertures of the first ventilation hole, the second ventilation hole 201 and the third ventilation hole 202 are set to 0.1mm-10mm. The apertures of the first ventilation hole, the second ventilation hole and the third ventilation hole form a conductive network through the electromagnetic wave. The composition of the conductive network is:

[0047] The conductive network of nickel-based foam metal is connected in three dimensions, ensuring that current can flow smoothly throughout the material.

[0048] Randomness: Due to various factors during the preparation process (such as gas pressure, temperature, and time), the pores and skeleton structure of nickel-based foam metals are randomly distributed. This randomness makes the conductive network more complex and improves its electromagnetic shielding performance.

[0049] Conductive skeleton: The conductive skeleton of nickel-based foam metal is mainly composed of nickel metal, which has good conductivity and corrosion resistance. These skeletons are connected to each other and form the main part of the conductive network.

[0050] Furthermore, the function of the cutoff waveguide ventilation window is to shield the air in the machine room from the outside world. It is mainly installed on the top of the shielded machine room, but can also be installed on the side.

[0051] The outer frame fixing frame of the cut-off waveguide ventilation window is made of aluminum alloy, and the waveguide window is connected to the outside world with nickel-based foam honeycomb. In order to better protect the sealing of the shielded equipment room, the cut-off waveguide ventilation window is fixed to the shielded equipment room by gas welding.

[0052] In order to improve the environment inside the shielded room, this patent mainly adopts a three-hole style of combined waveguide window, and installs a fan device (non-metallic fan blades) on the room side of one of the waveguide windows to increase air circulation inside and outside the shielded room.

[0053] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shielded room cutoff waveguide ventilation window, characterized in that: include: A foamed metal ventilation window (1) is used for placement in a shielding machine room, wherein the foamed metal ventilation window (1) is gas-welded to a top steel plate of the shielding machine room by welding rods; The foamed metal ventilating window (1) further comprises a first aluminum-magnesium alloy plate (101), a second aluminum-magnesium alloy plate (3), a first vent (2), a second vent (201) and a third vent (202); the second aluminum-magnesium alloy plate (3) is mounted on one side of the first aluminum-magnesium alloy plate (101); the first aluminum-magnesium alloy plate (101) and the second aluminum-magnesium alloy plate (3) are evenly distributed with the first vent (2), the second vent (201) and the third vent (202) interconnected; A ventilator (5) for shielding air circulation in the machine room is provided inside the second vent (201).

2. A shielded machine room cutoff waveguide ventilation window according to claim 1, characterized in that: A bracket (4) for accommodating a ventilator (5) is installed inside the second ventilating opening (201), and the ventilator (5) is installed at the center of the bracket (4).

3. The shielded machine room cutoff waveguide ventilation window according to claim 1, characterized in that: The output end of the ventilator (5) is provided with a fan blade, and a protective mesh cover (6) is provided below the ventilator (5).

4. The shielded machine room cutoff waveguide ventilation window according to claim 3, characterized in that: The protective mesh cover (6) is located at the bottom end of the second ventilation opening (201) opened at the bottom of the first aluminum-magnesium alloy plate (101).

5. The shielded machine room cutoff waveguide ventilation window according to claim 1, characterized in that: Four groups of symmetrical threaded holes (8) are provided at both ends of the surface of the first aluminum-magnesium alloy plate (101), and the threaded holes (8) penetrate the second aluminum-magnesium alloy plate (3), and the internal threads of the threaded holes (8) are connected with screws (7).

6. The shielded machine room cutoff waveguide ventilation window according to claim 4, characterized in that: The protective mesh cover (6) is threadedly fixed in a threaded hole (8) provided on the first aluminum-magnesium alloy plate (101) by means of screws (7).

7. The shielded machine room cutoff waveguide ventilation window according to claim 1, characterized in that: The apertures of the first vent (2), the second vent (201) and the third vent (202) are set to three types: 2.5 mm, 3.5 mm and 4.5 mm.

8. The shielded machine room cutoff waveguide ventilation window according to claim 7, characterized in that: Electromagnetic waves pass through the aperture surfaces of the first ventilation opening (2), the second ventilation opening (201) and the third ventilation opening (202) to form a conductive network.

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