TWI844418B - Outdoor cabinet with protective damper - Google Patents

Abstract

An outdoor cabinet with a protective damper is disclosed and includes a cabinet, an active damper and a passive damper. The cabinet includes two opposite lateral walls, an air inlet, an air outlet and an accommodation space. The air inlet and the air outlet are respectively arranged on the two opposite lateral walls, and the accommodation space is in communication with an outdoor environment through the air inlet and the air outlet, respectively. The active damper includes an inflow fan. The inflow fan is arranged adjacent to the air inlet. The passive damper includes an exhaust fan and a damper blade. The exhaust fan is arranged adjacent to the air outlet, and the damper blade is arranged between the air outlet and the outdoor environment. When the inflow fan and the exhaust fan are in operation, the damper blade allows a heat-dissipation air to be exhausted from the air outlet to the outdoor environment. When a wind pressure of the outdoor environment is greater than a wind pressure of the accommodation space, the damper blade closes the air outlet to protect electronic devices installed in the cabinet.

Description

Outdoor cabinet with protective damper

This case is about an outdoor cabinet, especially an outdoor cabinet with a protective damper. Through the setting of a passive damper, the cooling air volume of the cabinet can be maintained during normal use, and the backflow of storm water can be completely blocked during stormy weather conditions.

In order to protect power equipment from the sun, heat radiation, rain, air, etc. when installed outdoors, and to achieve waterproof, moisture-proof, dust-proof, and corrosion-resistant functions, outdoor cabinets must be used to properly protect electronic equipment when installing power equipment to maintain the life of the equipment and normal operation. In addition, in order to dissipate the heat generated by the power equipment in the cabinet, the outdoor cabinet must be connected to the outdoor environment through an air-cooled cooling system to exert heat dissipation efficiency. However, in the face of the changing outdoor environment, outdoor cabinets must provide the necessary protection level to avoid damage to internal electronic devices.

In response to stormy weather conditions, some existing outdoor cabinets prevent wind and rain from entering the cabinet by placing waterproof air filters, but waterproof air filters are expensive. In addition to increasing costs, they will also significantly reduce the cabinet cooling air volume. In addition, some existing outdoor cabinets also use fixed waterproof structures to prevent wind and rain from entering the cabinet, but their waterproof performance cannot achieve a complete wind and rainproof effect, and will also significantly reduce the cabinet cooling air volume.

In view of this, it is necessary to provide an outdoor cabinet with a protective damper. Through a passive damper installed outside the air outlet, the cooling air volume of the cabinet can be maintained during normal use, and the backflow of storm water can be completely blocked during stormy weather conditions, thereby solving the deficiencies of the prior art.

The purpose of this case is to provide an outdoor cabinet with a protective damper. A passive damper is installed adjacent to the air outlet of the outdoor power air-cooled cooling cabinet. During normal use, the passive damper remains open to maintain the cooling air volume of the cabinet. In stormy weather conditions, the passive damper is closed by wind pressure to perform protection, completely preventing storm water from flowing back to the air outlet or entering the cabinet.

Another purpose of this case is to provide an outdoor cabinet with a protective damper. By setting a passive damper in the upper and lower connected diversion duct, sufficient cooling air volume can be maintained during normal use, and in stormy weather conditions, 100% of the stormy rain is prevented from flowing back from the airflow vent to the outlet or entering the cabinet. The passive damper blades can be set through a hollow frame or directly in the diversion duct, without the need to use other waterproof air filters to prevent stormy rain from flowing back, and the installation is simple and can reduce the design cost. On the other hand, since the damper blades can be installed in the air guide duct by ball bearing or PIN bearing hinge, the edge of the damper blades can be maintained at a specific angle range by using gravity and cooperating with the limit column, the heat dissipation air flow inside the cabinet can pass through the damper blades smoothly during normal use. Compared with the traditional complex fixed structure to prevent storms from flowing back through the vents, the passive damper is kept open during normal use, which does not increase the air flow pressure drop and can maintain a higher air flow rate. In stormy weather conditions, when the wind pressure in the outdoor environment is greater than the wind pressure in the cabinet and a reverse airflow is generated from the outdoor environment into the diversion duct through the vent, the reverse airflow can easily drive the damper blades to close the diversion duct, achieving the effect of completely preventing the storm from flowing back from the vent to the outlet or entering the cabinet.

To achieve the above-mentioned purpose, the present invention provides an outdoor cabinet with a protective damper, comprising a cabinet, an active damper and a passive damper. The cabinet is assembled and arranged on a horizontal ground, wherein the cabinet comprises an air inlet and an air outlet opposite to each other, the air inlet is arranged on a first cabinet side wall of the cabinet, the air outlet is arranged on a second cabinet side wall of the cabinet, and the first cabinet side wall and the second cabinet side wall are opposite to each other, wherein the first cabinet side wall and the second cabinet side wall are perpendicular to the horizontal ground. The active damper is arranged on the first cabinet side wall and adjacent to the air inlet. The passive damper is installed on the side wall of the second cabinet and includes an exhaust fan and damper blades, wherein the exhaust fan is installed adjacent to the air outlet, and the damper blades are installed outside the air outlet to close or open the air outlet. When the exhaust fan is in operation, a heat dissipation airflow is generated, which flows from the air inlet to the air outlet in the cabinet, and the damper blades allow the heat dissipation airflow to be discharged from the air outlet. When the wind pressure outside the cabinet is greater than the wind pressure inside the cabinet and a reverse airflow is generated, the reverse airflow allows the damper blades to close the air outlet to protect the electronic devices installed in the cabinet.

In order to achieve the above-mentioned purpose, the present case further provides an outdoor cabinet with a protective damper, including a cabinet body, an active damper, a cover body and a passive damper. The cabinet body includes an air inlet, an air outlet and a storage space, the air inlet is arranged on the side wall of the first cabinet body, the air outlet is arranged on the side wall of the second cabinet body, and the storage space is connected to the air inlet and the air outlet respectively. The active damper is arranged on the side wall of the first cabinet body, and is assembled to form a heat dissipation airflow, which enters from the air inlet and is discharged from the air outlet. The cover body covers the air outlet of the cabinet body, and forms a guide air duct with the side wall of the second cabinet body, wherein the guide air duct is arranged to flow up and down, the upper part of the guide air duct is connected to the storage space through the air outlet, and the lower part of the guide air duct is connected to the outdoor environment through the vent. The passive damper is arranged in the air guide duct and comprises a hollow frame and damper blades. The hollow frame is connected up and down and comprises a frame front wall, a frame rear wall and two opposite frame side walls, which are respectively attached to the inner wall surface of the air guide duct. The damper blade includes a hinge, a first end edge and a second end edge, wherein the damper blade is hingedly arranged between two opposite frame side walls through the hinge, the first end edge and the second end edge are respectively located on two opposite sides of the hinge, the first end edge is spatially opposite to the frame front wall, and the second end edge is spatially opposite to the frame rear wall, wherein the first end edge and the second end edge have different moments relative to the hinge, when the wind pressure of the outdoor environment is greater than the wind pressure of the accommodating space and a reverse airflow is generated from the outdoor environment into the guide air duct, the reverse airflow drives the damper blade to rotate, driving the first edge end to abut against the frame front wall and the second edge end to abut against the frame rear wall, so as to close the guide air duct.

To achieve the above-mentioned purpose, the present invention further provides an outdoor cabinet with a protective damper, comprising a cabinet, an active damper, a cover, and a passive damper. The cabinet comprises a first cabinet side wall and a second cabinet side wall opposite to each other, an air inlet, an air outlet, and a storage space, wherein the air inlet is arranged on the first cabinet side wall, the air outlet is arranged on the second cabinet side wall, and the storage space is connected to the air inlet and the air outlet, respectively. The active damper is arranged on the first cabinet side wall, and is assembled to form a heat dissipation airflow, which enters from the air inlet and is discharged from the air outlet. The cover is connected to the side wall of the second cabinet, covers the air outlet of the cabinet and forms a guide air duct with the side wall of the second cabinet, wherein the guide air duct is arranged in an up-and-down manner, the upper part of the guide air duct is connected to the accommodating space through the air outlet, and the lower part of the guide air duct is connected to the outdoor environment through the vent. The cover includes a cover rear wall and two opposite cover side walls, and the cover rear wall is connected to the side wall of the second cabinet through the two opposite cover side walls. The passive damper includes a damper blade, a hinge, a first end edge and a second end edge, wherein the damper blade is hingedly arranged between two opposite cover side walls through the hinge, the first end edge and the second end edge are respectively located on two opposite sides of the hinge, the first end edge is spatially opposite to the second cabinet side wall, and the second end edge is spatially opposite to the cover rear wall. The first end edge and the second end edge have different torques at the relative hinged portion. When the wind pressure of the outdoor environment is greater than the wind pressure of the accommodation space and a reverse airflow is generated from the outdoor environment into the guide air duct, the reverse airflow drives the damper blade to rotate, driving the first edge end to abut against the front wall of the cover body and the second edge end to abut against the rear wall of the cover body to close the guide air duct.

1: Outdoor cabinet

2, 2a, 2b, 2c: Passive damper

3: Active damper

10: Cabinet

101: Side wall of the first cabinet

102: Side wall of the second cabinet

11: Storage space

12: Air inlet

13: Air outlet

15: Cover

151: rear wall of cover

152, 153: Side wall of cover

16: Ventilation vents

17: Guide vane

18: Air diversion duct

20: Hollow frame

201:Frame front wall

202: Frame rear wall

203, 204: frame side wall

21: Damper blades

211: The first edge

212: The second edge

22: Joint

23: Limiting column

24: First baffle

25: Second baffle

30: Inflow fan

40: Exhaust fan

9: Electronic devices

A1, A2: offset angle

C: Rotation axis

F1: Cooling airflow

F2: Reverse airflow

X, Y, Z: axis

Figure 1 shows the exterior structure of the outdoor cabinet with protective dampers in this case.

Figure 2 is a partial structural exploded view of the outdoor cabinet with protective dampers in this case.

Figure 3 is a vertical cross-sectional view of the outdoor cabinet with a protective damper disclosed in this case.

Figure 4 is a schematic diagram showing the air guide duct in normal use.

Figure 5 is a horizontal cross-sectional view of the air guide duct in this case in normal use.

Figure 6 is a three-dimensional diagram showing the structure of the passive damper in normal use.

Figure 7 is a vertical cross-sectional view showing the passive damper in normal use.

Figure 8 is a schematic diagram showing the diversion duct in this case in its protection state against rainstorm intrusion.

Figure 9 is a horizontal cross-sectional view showing the diversion duct in this case in a state of protection against rainstorm intrusion.

Figure 10 is a three-dimensional diagram showing the passive damper in this case in a state of protection against storm intrusion.

Figure 11 is a vertical cross-sectional view showing the passive damper in this case in the storm intrusion protection state.

Figure 12 is a vertical cross-sectional view of the second exemplary passive damper in normal use.

Figure 13 is a vertical cross-sectional view showing the second exemplary passive damper in the storm intrusion protection state.

Figure 14 is a vertical cross-sectional view of the third exemplary passive damper in normal use.

Figure 15 is a vertical cross-sectional view showing the third exemplary passive damper in the storm intrusion protection state.

Figure 16 is a vertical cross-sectional view of the fourth exemplary passive damper in the present case in normal use.

Figure 17 is a vertical cross-sectional view showing the fourth exemplary passive damper in the storm intrusion protection state.

Some typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different aspects, all of which do not deviate from the scope of the present invention, and the descriptions and drawings therein are essentially used for illustrative purposes rather than for limiting the present invention. For example, if the following content of the present disclosure describes that a first feature is disposed on or above a second feature, it means that it includes an embodiment in which the first feature and the second feature are directly in contact, and also includes an embodiment in which the additional feature can be disposed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. In addition, different embodiments in the present disclosure may use repeated reference symbols and/or marks. These repetitions are for the purpose of simplification and clarity and are not intended to limit the relationship between the various embodiments and/or the described appearance structures. Furthermore, in order to facilitate the description of the relationship between a component or feature and another (plural) component or (plural) feature in the drawings, spatially related terms such as "upper", "lower", "top", "bottom", "front", "back" and similar terms may be used. In addition to the orientations shown in the drawings, spatially related terms are used to cover different orientations of the device in use or operation. The device may also be positioned otherwise (e.g., rotated 90 degrees or in other orientations), and the description of the spatially related terms used may be interpreted accordingly. In addition, when a component is referred to as being "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or there may be intervening components. Although the numerical ranges and parameters of the broad scope of the present disclosure are approximate values, the numerical values are stated as accurately as possible in the specific examples. In addition, it is understood that although the terms "first", "second", "third", etc. can be used in the scope of the patent application to describe different components, these components should not be limited by these terms. In the embodiments, these components described accordingly are represented by different component symbols. These terms are used to distinguish different components. For example: the first component can be called the second component, and similarly, the second component can also be called the first component without departing from the scope of the embodiments.

Referring to FIG. 1 to FIG. 11, an outdoor cabinet with a protective damper is disclosed. The present invention provides an outdoor cabinet 1 with a protective damper, which is assembled and arranged on a horizontal ground such as an XY plane. The outdoor cabinet 1 includes a cabinet 10, an active damper 3, and a passive damper 2. The cabinet 10 includes a first cabinet side wall 101 and a second cabinet side wall 102 opposite to each other, an air inlet 12, an air outlet 13, and an accommodation space 11. In this embodiment, the air inlet 12 is disposed on the first cabinet side wall 101, and the air outlet 13 is disposed on the second cabinet side wall 102. The accommodation space 11 is connected to an outdoor environment through the air inlet 12 and the air outlet 13, and is configured to accommodate an electronic device 9. In this embodiment, the first cabinet side wall 101 and the second cabinet side wall 102 are, for example, the front cabinet side wall and the rear cabinet side wall, respectively, which are perpendicular to the horizontal ground of the YX plane. The active damper 3 is disposed on the first cabinet side wall 101 and includes an inflow fan 30. The inflow fan 30 is disposed adjacent to the air inlet 12. The passive damper 2 is disposed on the second cabinet side wall 102 and includes an exhaust fan 40 and an air damper blade 21. The exhaust fan 40 is disposed adjacent to the air outlet 13, and the air outlet 13 is connected between the accommodation space 11 and the outdoor environment. The air damper blade 21 is disposed between the air outlet 13 and the outdoor environment to close or open the connection between the air outlet 13 and the outdoor environment. The inlet fan 30 and the air inlet 12 of the active damper 3 can be arranged in a position or type according to actual application requirements to dissipate heat from the electronic device 9 in the accommodation space 11. In this embodiment, the inlet fan 30 and the air inlet 12 are more spaced relative to the exhaust fan 40 and the air outlet 13. When the inlet fan 30 and the exhaust fan 40 are in operation, they are combined to generate a heat-dissipation airflow F1, which enters from the air inlet 12, dissipates heat from the electronic device 9 in the accommodation space 11, and is then discharged from the air outlet 13. In other embodiments, one of the inlet fan 30 or the exhaust fan 40 can be omitted. Or, for example, an exhaust fan is separately provided in the cabinet 10. When the exhaust fan in the cabinet 10 is in operation, a heat-dissipation airflow can be generated in the cabinet 10. It should be noted that in the aforementioned embodiment, the inlet fan 30 and the exhaust fan 40 are added to increase the flow rate of the heat dissipation air flow F1 in the accommodating space 11 to increase the heat dissipation efficiency. The present case does not limit the form of cooling the air inlet and the control of the active damper 3. However, the heat dissipation air flow F1 in the accommodating space 11 can flow from the air inlet 12 to the air outlet 13, and the damper blades 21 allow the heat dissipation air flow F1 to be discharged from the air outlet 13 to the outdoor environment, as shown in FIG. 4. When the outdoor environment is subjected to a storm, the wind pressure of the outdoor environment is greater than the wind pressure of the accommodation space 11 and a reverse airflow F2 is generated. The reverse airflow F2 allows the damper blade 21 to close the connection between the air outlet 13 and the outdoor environment to protect the electronic device 9 installed in the cabinet 10. The operation of the damper blade 21 in the passive damper 2 is further described below.

In this embodiment, the outdoor cabinet 1 further includes a cover 15, which is disposed on the cabinet 10 and is used to construct the damper blade 21 of the passive damper 2. The side edge of the cover 15 is connected to the second cabinet side wall 102, covers the air outlet 13 of the cabinet 10, and forms an air duct 18 between the cover 15 and the second cabinet side wall 102. In this embodiment, the cabinet 10 further includes a guide plate 17, which is connected to the lower edge of the air outlet 13, protrudes toward the guide duct 18, and forms a sharp angle with the second cabinet side wall 102, and is assembled to guide the heat dissipation air flow F1 into the guide duct 18. In this embodiment, the guide air duct 18 is disposed upwardly and downwardly in fluid communication. The upper part of the guide air duct 18 is connected to the accommodating space 11 through the air outlet 13, and the lower part of the guide air duct 18 is connected to the outdoor environment through the vent 16. The horizontal height of the air outlet 13 on the Z axis is higher than the horizontal height of the vent 16. In this embodiment, the opening of the cover 15 faces the second cabinet side wall 102. In addition to the top and bottom surfaces, the cover 15 further includes a cover rear wall 151 and two opposite cover side walls 152 and 153. The cover rear wall 151 is connected to the second cabinet side wall 102 through the top surface, the bottom surface and the two opposite cover side walls 152 and 153 respectively. In other words, the air guide duct 18 formed between the air outlet 13 and the vent 16 is surrounded by the second cabinet side wall 102, the cover rear wall 151, and the two opposite cover side walls 152, 153 to form an inner wall surface. In other embodiments, the air guide duct 18 can be adjusted by changing the combination of the second cabinet side wall 102 and the cover 15, and the present invention is not limited to this. In addition, the vent 16 can be, for example, composed of multiple ports or a grid structure, and is arranged on the bottom side of the cover rear wall 151 and the two opposite cover side walls 152, 153, and the bottom surface of the cover 15. In other embodiments, the number, size, and type of the vent 16 can be adjusted according to actual application requirements, and the present invention is not limited to this.

In this embodiment, the passive damper 2 is disposed in the air guide duct 18 and is located between the air outlet 13 and the air vent 16. The passive damper 2 includes a hollow frame 20 and a damper blade 21. The hollow frame 20 is arranged in conjunction with the air guide duct 18, is connected from top to bottom, and includes a frame front wall 201, a frame rear wall 202, and two opposite frame side walls 203, 204, which are respectively attached to the inner wall surface of the air guide duct 18. That is, the frame front wall 201 is attached to the second cabinet side wall 102, the frame rear wall 202 is attached to the cover rear wall 151, and the two opposite frame side walls 203, 204 are respectively attached to the two opposite cover side walls 153, 152. In this embodiment, the hollow frame 20 can be connected to the second cabinet side wall 102 and the cover 15 by screw locking to realize that the hollow frame 20 is set in the guide air duct 18. This case does not limit the way in which the hollow frame 20 is attached to the second cabinet side wall 102 and the cover 15. In other embodiments, the hollow frame 20 can be attached to the second cabinet side wall 102, attached to the three inner walls of the cover 15, and integrally formed with the second cabinet side wall 102 or the cover 15. In these embodiments, the hollow frame 20 is set after the guide air duct 18, and the guide air duct 18 is only connected up and down through the hollow frame 20.

In this embodiment, the damper blade 21 includes a pivoted portion 22, a first edge 211 and a second edge 212. The damper blade 21 is pivotally connected between two opposite frame side walls 203 and 204 through the pivoted portion 22, and the first edge 211 and the second edge 212 are respectively located on two opposite sides of the pivoted portion 22. The pivoted portion 22 on the two opposite frame side walls 203 and 204 has a rotation axis C offset from the line connecting the first edge 211 and the second edge 212. In this embodiment, the first end edge 211 is spatially opposite to the frame front wall 201, and the second end edge 212 is spatially opposite to the frame rear wall 202, wherein the first end edge 211 and the second end edge 212 have different moments relative to the pivot 22. In order to make the first end edge 211 and the second end edge 212 have different moments relative to the pivot 22, in this embodiment, the distance from the first end edge 211 to the rotation axis C of the pivot 22 is, for example, greater than the distance from the second end edge 212 to the rotation axis C of the pivot 22. Similarly, the distance between the rotation axis C of the hinge 22 and the frame front wall 201 is greater than the distance between the rotation axis C of the hinge 22 and the frame rear wall 202. Thus, the moment of the first end edge 211 relative to the hinge 22 is greater than the moment of the second end edge 212 relative to the hinge 22. When the wind pressure in the outdoor environment is less than the wind pressure in the accommodating space 11, the damper blade 21 is acted upon by gravity, and the first end edge 211 rotates to below the rotation axis C of the hinge 22, while the second end edge 212 rotates to above the rotation axis C of the hinge 22. At this time, the damper blades 21 are roughly vertical, and the guide air duct 18 is connected vertically through the hollow frame 20, allowing the heat dissipation air flow F1 discharged from the air outlet 13 in the accommodation space 11 to pass smoothly through the guide air duct 18 and the hollow frame 20, and then be discharged from the vent 16. It does not increase the air flow pressure drop, and keeps the heat dissipation air flow F1 at a higher air flow rate.

It is worth noting that the passive damper 2 further includes a pair of limiting posts 23, which are disposed on two opposite frame side walls 203, 204 and protrude inwardly, are located below the rotation axis C, and are offset toward the frame front wall 201, wherein the pair of limiting posts 23 form an offset angle A1 of about 10° relative to the rotation axis C and a plumb line. Therefore, when the damper blade 21 is acted upon by gravity, the first end edge 211 will rotate to below the rotation axis C of the hinge 22, and the first end edge 211 will be blocked by the pair of limiting posts 23, so that the damper blade 21 is slightly tilted, so that the heat dissipation air flow F1 can maintain a relatively high air flow rate. On the other hand, when the wind pressure of the outdoor environment is greater than the wind pressure of the accommodation space 11 and a reverse airflow F2 is generated from the outdoor environment into the guide air duct 18, the damper blade 21 slightly tilted by the limiting column 23 helps to increase the force bearing area of the damper blade 21 driven by the reverse airflow F2, making it easier for the reverse airflow F2 to drive the damper blade 21 to rotate, and drive the first end edge 211 to abut against the frame front wall 201 and the second end edge 212 to abut against the frame rear wall 202, thereby achieving the effect of closing the guide air duct 18.

In this embodiment, the hollow frame 20 further includes a first baffle 24 and a second baffle 25. The first baffle 24 is disposed on the frame front wall 201 and protrudes horizontally inward from the frame front wall 201, and the second baffle 25 is disposed on the frame rear wall 202 and protrudes horizontally inward from the frame rear wall 202. In this embodiment, the first baffle 24 is spatially opposite to the first end edge 211 of the damper blade 21, and the second baffle 25 is spatially opposite to the second end edge 212 of the damper blade 21. When the reverse airflow F2 enters the guide air duct 18 from the outdoor environment, the reverse airflow F2 drives the damper blade 21 to rotate, driving the first end edge 211 to abut against the first baffle 24 from bottom to top and the second end edge 212 to abut against the second baffle 25 from top to bottom, so that the damper blade 21 is firmly connected between the first baffle 24 of the frame front wall 201 and the second baffle 25 of the frame rear wall 202, completely closing the guide air duct 18.

It should be noted that the hollow frame 20 of the passive damper 2 can be regarded as the four inner walls of the air guide duct 18, that is, the inner wall surface is formed by the second cabinet side wall 102, the cover rear wall 151 and the two opposite cover side walls 152, 153. In one embodiment, the passive damper 2 can omit the structure of the hollow frame 20, and the damper blade 21 can be directly arranged between the two opposite cover side walls 152, 153 through the hinge 22. Similarly, the limit column 23 can also be directly arranged on the two opposite cover side walls 152, 153 to protrude into the air guide duct 18, so that the limit column 23 forms the aforementioned offset angle A1 relative to the rotation axis C and the plumb line. On the other hand, the first baffle 24 is disposed on the second cabinet side wall 102 and protrudes horizontally from the second cabinet side wall 102 into the air flow duct 18, and the second baffle 25 is disposed on the cover rear wall 151 and protrudes horizontally from the cover rear wall 151 into the air flow duct 18. In this way, the operation of the damper blade 21 in the air flow duct 18 and the performance that can be achieved are the same as those of the above-mentioned embodiment, and will not be described in detail here. However, it should be noted that the damper blade 21 of the passive damper 2 is disposed in the air flow duct 18 through the hollow frame 20, which is conducive to product modularization and mass production. Of course, the damper blades 21 can also be pre-set on the two opposite cover side walls 152 and 153 of the cover body 15 according to customized requirements, and then combined with the second cabinet side wall 102 to form the guide air duct 18, or set in the guide air duct 18 in other forms. This case is not limited to this and will not be elaborated.

Figures 12 and 13 disclose the second exemplary passive damper of the present case. In this embodiment, the passive damper 2a is similar to the passive damper 2 in the outdoor cabinet 1 with a protective damper shown in Figures 1 to 11, and the same component numbers represent the same components, structures and functions, which will not be repeated here. Refer to Figures 1 to 13. Unlike the aforementioned embodiment in which the passive damper 2 includes a limit column 23, in this embodiment, the passive damper 2a omits the limit column structure. When the wind pressure in the outdoor environment is less than the wind pressure in the accommodating space 11, the damper blade 21 is affected by gravity, and the first end edge 211 will rotate to the bottom of the rotation axis C of the hinge 22, and the second end edge 212 will rotate to the top of the rotation axis C of the hinge 22. In other words, when the damper blade 21 is in normal use, it naturally droops and is roughly parallel to the guide air duct 18, which has the least impact on the heat dissipation airflow F1 flowing through it, so that the heat dissipation airflow F1 maintains a higher airflow. On the other hand, when the wind pressure of the outdoor environment is greater than the wind pressure of the accommodating space 11 and a reverse airflow F2 is generated from the outdoor environment into the guide air duct 18, the vent 16 can be designed to guide the flow direction of the reverse airflow F2 to blow the damper blade 21. In this way, the reverse airflow F2 has enough power to drive the damper blade 21 to rotate, and drive the first end edge 211 to abut against the frame front wall 201 and the second end edge 212 to abut against the frame rear wall 202, thereby achieving the effect of closing the guide air duct 18.

FIG. 14 and FIG. 15 disclose the passive damper of the third exemplary embodiment of the present invention. In this embodiment, the passive damper 2b is similar to the passive damper 2 in the outdoor cabinet 1 with a protective damper shown in FIG. 1 to FIG. 11, and the same component numbers represent the same components, structures and functions, which will not be repeated here. Refer to FIG. 1 to FIG. 11, FIG. 14 and FIG. 15. In this embodiment, a pair of limiting posts 23 of the passive damper 2b are arranged on two opposite frame side walls 203, 204 to protrude inwardly, are located below the rotation axis C, and are offset toward the frame front wall 201, wherein the pair of limiting posts 23 form an offset angle A2 of about 20° relative to the rotation axis C and a plumb line. When the damper blade 21 is acted upon by gravity, the first end edge 211 will rotate to below the rotation axis C of the hinge 22, and will be stopped by the pair of limit posts 23, so that the damper blade 21 is slightly tilted, and the heat dissipation air flow F1 maintains a sufficient high air flow rate. On the other hand, when the wind pressure of the outdoor environment is greater than the wind pressure of the accommodating space 11 and a reverse airflow F2 is generated from the outdoor environment into the guide air duct 18, the damper blade 21 slightly tilted by the limiting column 23 helps to increase the force bearing area of the damper blade 21 driven by the reverse airflow F2, so that the reverse airflow F2 can more easily drive the damper blade 21 to rotate, and drive the first end edge 211 to abut against the frame front wall 201 and the second end edge 212 to abut against the frame rear wall 202, thereby achieving the effect of closing the guide air duct 18. Of course, the setting of the vent 16 can also be adjusted according to the actual application requirements, so that the reverse airflow F2 can more easily drive the damper blade 21 to rotate, and drive the first end edge 211 to abut against the frame front wall 201 and the second end edge 212 to abut against the frame rear wall 202, thereby achieving the effect of closing the guide air duct 18. In other examples, the range of the offset angle formed by the limit column 23 relative to the rotation axis C and the lead vertical line is between 5° and 45°. No further details are given here.

FIG. 16 and FIG. 17 disclose the fourth exemplary passive damper of the present invention. Passive damper. In this embodiment, the passive damper 2c is similar to the passive damper 2 in the outdoor cabinet 1 with a protective damper shown in FIG. 1 to FIG. 11, and the same component numbers represent the same components, structures and functions, which will not be described in detail here. Refer to FIG. 1 to FIG. 11, FIG. 16 and FIG. 17. Different from the above-mentioned embodiment, the passive damper 2c has the hinge 22 of the damper blade 21 disposed on the other side of the damper blade 21, so as to adjust the moment of the first edge 211 and the second edge 212 relative to the hinge 22, and the difficulty of the damper blade 21 being driven by the reverse airflow F2. In normal use, the damper blade 21 is slightly inclined, so that the heat dissipation airflow F1 can maintain a higher airflow passing through. When the wind pressure of the outdoor environment is greater than the wind pressure of the accommodation space 11 and a reverse airflow F2 is generated from the outdoor environment into the air guide duct 18, the reverse airflow F2 drives the damper blade 21 to rotate with sufficient power, and drives the first end edge 211 to abut against the frame front wall 201 and the second end edge 212 to abut against the frame rear wall 202, thereby achieving the effect of closing the air guide duct 18.

It should be noted that in the above-mentioned embodiments, many technical features can be combined and varied to form an application in which a passive damper blade 21 is disposed in the guide air duct 18. In normal use, the guide air duct 18 is kept open to maintain the heat dissipation air flow F1 passing through with a high air volume, and in stormy weather conditions, the wind pressure generated by the storm is used to close the protection to completely prevent the storm from flowing back to the air outlet 13 or entering the cabinet 10. The size, position and corresponding relationship of the vent 16, the hollow frame 20, the damper blade 21, the hinge 22, the limit column 23, the first baffle 24, and the second baffle 25 can be adjusted according to the actual application requirements to achieve the optimization of wind-driven rain ingress protection. Of course, the arrangement of the vent 16, the hollow frame 20, the damper blades 21, the hinge 22, the limit column 23, the first baffle 24, and the second baffle 25 is not limited to the illustrated embodiment and will not be described in detail.

In summary, the present invention provides an outdoor cabinet with a protective damper. A passive damper is installed adjacent to the air outlet of the outdoor power air-cooled cooling cabinet. During normal use, the passive damper remains open to maintain the cooling air volume of the cabinet, and during stormy weather conditions, the passive damper is closed by wind pressure to perform protection, completely blocking the storm from flowing back to the air outlet or entering the cabinet. The passive damper is installed in the upper and lower connected guide air ducts, which can maintain sufficient cooling air volume during normal use, and ensure 100% blocking of storms from flowing back from the air outlet to the air outlet or entering the cabinet under stormy weather conditions. Passive damper blades can be installed through a hollow frame or directly in the air duct. There is no need to use other waterproof air filters to prevent backflow from storms. The installation is simple and can reduce design costs. On the other hand, since the damper blades can be installed in the air duct by ball bearings or PIN bearing hinges, the edge of the damper blades can be maintained to droop within a specific angle range by using gravity and cooperating with limit columns. During normal use, the heat dissipation air flow inside the cabinet can pass through the damper blades smoothly. Compared with the traditional complex fixed structure to prevent backflow from storms from the vents, the passive damper is kept open during normal use, which does not increase the air flow pressure drop and can maintain a higher air flow rate. In stormy weather conditions, when the wind pressure in the outdoor environment is greater than the wind pressure in the cabinet and a reverse airflow is generated from the outdoor environment into the diversion duct through the vent, the reverse airflow can easily drive the damper blades to close the diversion duct, achieving the effect of completely blocking the storm from flowing back from the air vent to the outlet or entering the cabinet.

This case can be modified in various ways by people familiar with this technology, but it will not deviate from the scope of protection of the attached patent application.

1: Outdoor cabinet

2: Passive damper

3: Active damper

10: Cabinet

101: Side wall of the first cabinet

102: Side wall of the second cabinet

11: Storage space

12: Air inlet

13: Air outlet

15: Cover

16: Ventilation vents

17: Guide vane

18: Air diversion duct

20: Hollow frame

21: Damper blades

22: Joint

30: Inflow fan

40: Exhaust fan

F1: Cooling airflow

X, Y, Z: axis

Claims (20)

An outdoor cabinet with a protective damper comprises: a cabinet body, comprising an air inlet and an air outlet, wherein the air inlet is arranged on a first cabinet side wall of the cabinet body, and the air outlet is arranged on a second cabinet side wall of the cabinet body, and the first cabinet side wall and the second cabinet side wall are opposite to each other; an active damper is arranged on the first cabinet side wall and adjacent to the air inlet; and a passive damper is arranged on the second cabinet side wall and comprises an exhaust fan and an air damper blade, wherein the exhaust fan is arranged adjacent to the air outlet. The air outlet is provided at the cabinet, and the damper blade is arranged outside the air outlet to close or open the air outlet; when the exhaust fan is in operation, a heat dissipation airflow is generated, which flows from the air inlet to the air outlet in the cabinet, and the damper blade allows the heat dissipation airflow to be discharged from the air outlet; when the exhaust fan is not in operation, the damper blade is opened, and when the wind pressure outside the cabinet is greater than the wind pressure inside the cabinet and a reverse airflow is generated, the reverse airflow allows the damper blade to close the air outlet to protect an electronic device arranged in the cabinet. The outdoor cabinet with a protective damper as described in claim 1 further includes a cover body, which covers the air outlet of the cabinet body and forms a guide air duct with the side wall of the second cabinet body, wherein the guide air duct is arranged in an up-and-down manner, the upper part of the guide air duct is connected to a storage space in the cabinet body through the air outlet, and the lower part of the guide air duct is connected to an outdoor environment outside the cabinet body through a vent, wherein the passive damper is arranged in the guide air duct. As claimed in claim 2, the outdoor cabinet with a protective damper, wherein the passive damper comprises a hollow frame, which is connected from top to bottom, and the hollow frame comprises a frame front wall, a frame rear wall and two opposite frame side walls, which are respectively attached to the inner wall surface of the air guide duct, wherein the damper blade comprises a hinge portion, a first end edge and a second end edge, wherein the damper blade is hingedly arranged between the two opposite frame side walls through the hinge portion, and the first end edge and the second end edge are respectively located at the two ends of the hinge portion. On the opposite side, the first end edge is spatially opposite to the front wall of the frame, and the second end edge is spatially opposite to the rear wall of the frame, wherein the first end edge and the second end edge have different moments relative to the hinge portion. When the wind pressure of the outdoor environment is greater than the wind pressure of the accommodating space and the reverse airflow is generated from the outdoor environment into the guide air duct, the reverse airflow drives the damper blade to rotate, driving the first end edge to abut against the front wall of the frame and the second end edge to abut against the rear wall of the frame to close the guide air duct. As described in claim 3, the outdoor cabinet with a protective air door, wherein the front wall of the hollow frame is attached to the side wall of the second cabinet, the rear wall of the frame and the two opposite side walls of the frame are attached to the three inner walls of the cover, and the hollow frame is located between the air outlet and the vent. As described in claim 3, the outdoor cabinet with a protective damper, wherein the hinge is hinged to the two opposite frame side walls via a ball bearing or a PIN bearing. As described in claim 3, the outdoor cabinet with a protective damper, wherein the hollow frame further includes a first baffle and a second baffle, the first baffle is arranged on the front wall of the frame and protrudes horizontally inward from the front wall of the frame, and the second baffle is arranged on the rear wall of the frame and protrudes horizontally inward from the rear wall of the frame, wherein the first baffle is spatially opposite to the first end edge of the damper blade, and the second baffle is spatially opposite to the second end edge of the damper blade, when the reverse airflow enters the guide air duct from the outdoor environment, the reverse airflow drives the damper blade to rotate, driving the first end edge to abut against the first baffle and the second end edge to abut against the second baffle, so that the guide air duct is closed. As described in claim 3, the outdoor cabinet with a protective damper, wherein the hinge has a rotation axis offset from the line connecting the first end edge and the second end edge. As described in claim 7, the outdoor cabinet with a protective wind door, wherein the distance from the first end edge to the rotation axis is greater than the distance from the second end edge to the rotation axis, the distance from the rotation axis to the front wall of the frame is greater than the distance from the rotation axis to the rear wall of the frame, the torque of the first end edge relative to the rotation axis is greater than the torque of the second end edge relative to the rotation axis, and when the wind pressure of the outdoor environment is less than the wind pressure of the accommodation space, the first end edge rotates to the bottom of the rotation axis under the action of gravity. As described in claim 8, the outdoor cabinet with a protective damper, wherein the passive damper further includes a pair of limiting columns, which are arranged on the two opposite frame side walls and protrude inwardly, are located below the rotation axis, and are offset toward the front wall of the frame, wherein the pair of limiting columns form an offset angle relative to the rotation axis and a plumb line, and the offset angle ranges from 5° to 45°. As described in claim 1, the outdoor cabinet with a protective damper, wherein the active damper further includes an inlet fan, which is arranged adjacent to the air inlet. An outdoor cabinet with a protective damper comprises: a cabinet body, comprising a first cabinet body side wall and a second cabinet body side wall opposite to each other, an air inlet, an air outlet and a storage space, wherein the air inlet is arranged on the first cabinet body side wall, the air outlet is arranged on the second cabinet body side wall, and the storage space is connected to the air inlet and the air outlet respectively; an active damper is arranged on the first cabinet body side wall, and is assembled to form a heat dissipation airflow, which is discharged from the air inlet. The air enters the cabinet and is discharged from the air outlet; a cover body, covering the air outlet of the cabinet, and forming a guide air duct with the side wall of the second cabinet, wherein the guide air duct is arranged to flow up and down, the upper part of the guide air duct is connected to the accommodating space through the air outlet, and the lower part of the guide air duct is connected to an outdoor environment through a vent; and a passive damper, arranged in the guide air duct, and comprising: A hollow frame, connected up and down, and comprising a frame front wall , a frame rear wall and two opposite frame side walls, respectively attached to the inner wall surface of the guide air duct; and a damper blade, including a pivot portion, a first end edge and a second end edge, wherein the damper blade is pivotally arranged between the two opposite frame side walls through the pivot portion, the first end edge and the second end edge are respectively located on two opposite sides of the pivot portion, the first end edge is spatially opposite to the frame front wall, and the second end edge is spatially opposite to the frame rear wall , wherein the first end edge and the second end edge have different torques relative to the hinge portion, wherein when the exhaust fan is not in operation, the damper blade is open, wherein when the wind pressure of the outdoor environment is greater than the wind pressure of the accommodating space and a reverse airflow is generated from the outdoor environment into the guide air duct, the reverse airflow drives the damper blade to rotate, driving the first end edge to abut against the front wall of the frame and the second end edge to abut against the rear wall of the frame to close the guide air duct. As described in claim 11, the outdoor cabinet with a protective air door, wherein the vent is adjacent to the bottom side of the cover, the air guide duct is connected between the air outlet and the vent, and the horizontal height of the air outlet is higher than the horizontal height of the vent. As described in claim 11, the outdoor cabinet with a protective air door, wherein the front wall of the hollow frame is attached to the side wall of the second cabinet, the rear wall of the frame and the two opposite side walls of the frame are attached to the three inner walls of the cover, and the hollow frame is located between the air outlet and the vent. As described in claim 11, the outdoor cabinet with a protective damper, wherein the hinge is hinged to the two opposite frame side walls via a ball bearing or a PIN bearing. As claimed in claim 11, the outdoor cabinet with a protective damper, wherein the hollow frame further includes a first baffle and a second baffle, the first baffle is arranged on the front wall of the frame and protrudes horizontally inward from the front wall of the frame, and the second baffle is arranged on the rear wall of the frame and protrudes horizontally inward from the rear wall of the frame, wherein the first baffle is spatially opposite to the first end edge of the damper blade, and the second baffle is spatially opposite to the second end edge of the damper blade, when the reverse airflow enters the guide air duct from the outdoor environment, the reverse airflow drives the damper blade to rotate, driving the first end edge to abut against the first baffle and the second end edge to abut against the second baffle, so that the guide air duct is closed. An outdoor cabinet with a protective damper as described in claim 11, wherein the hinge has a rotation axis offset from the line connecting the first end edge and the second end edge. As described in claim 16, the outdoor cabinet with a protective wind door, wherein the distance from the first end edge to the rotation axis is greater than the distance from the second end edge to the rotation axis, the distance from the rotation axis to the front wall of the frame is greater than the distance from the rotation axis to the rear wall of the frame, the torque of the first end edge relative to the rotation axis is greater than the torque of the second end edge relative to the rotation axis, and when the wind pressure of the outdoor environment is less than the wind pressure of the accommodation space, the first end edge rotates to the bottom of the rotation axis under the action of gravity. As described in claim 17, the outdoor cabinet with a protective damper, wherein the passive damper further includes a pair of limiting columns, which are arranged on the two opposite frame side walls and protrude inwardly, are located below the rotation axis, and are offset toward the front wall of the frame, wherein the pair of limiting columns form an offset angle relative to the rotation axis and a plumb line, and the offset angle ranges from 5° to 45°. An outdoor cabinet with a protective damper comprises: a cabinet body, comprising a first cabinet body side wall and a second cabinet body side wall opposite to each other, an air inlet, an air outlet and a storage space, wherein the air inlet is arranged on the first cabinet body side wall, the air outlet is arranged on the second cabinet body side wall, and the storage space is connected to the air inlet and the air outlet respectively; an active damper is arranged on the first cabinet body side wall, adjacent to the air inlet, and assembled to form a The heat dissipation airflow enters from the air inlet and is discharged from the air outlet; a cover body is connected to the side wall of the second cabinet body, covers the air outlet of the cabinet body and forms a guide air duct with the side wall of the second cabinet body, wherein the guide air duct is arranged in an up-and-down manner, the upper part of the guide air duct is connected to the air outlet, and the lower part of the guide air duct is connected to an outdoor environment through a vent, wherein the cover body includes a cover body rear wall and two opposite cover body side walls, and the cover body rear wall is divided into The first end edge and the second end edge are respectively connected to the second cabinet side wall through the two opposite cover side walls; and a passive damper, including a damper blade, a hinge, a first end edge and a second end edge, wherein the damper blade is hingedly arranged between the two opposite cover side walls through the hinge, the first end edge and the second end edge are respectively located on two opposite sides of the hinge, the first end edge is spatially opposite to the second cabinet side wall, and the second end edge is spatially opposite to the cover rear wall. The first end edge and the second end edge have different torques relative to the hinge portion, wherein when the exhaust fan is not in operation, the damper blade is opened, wherein when the wind pressure of the outdoor environment is greater than the wind pressure of the accommodating space and a reverse airflow is generated from the outdoor environment into the guide air duct, the reverse airflow drives the damper blade to rotate, driving the first end edge to abut against the front wall of the cover body and the second end edge to abut against the rear wall of the cover body to close the guide air duct. As described in claim 19, the outdoor cabinet with a protective air door, wherein the cabinet further includes a guide plate connected to the lower edge of the air outlet, protruding toward the guide air duct, and forming a sharp angle with the side wall of the second cabinet, and assembling to guide the heat dissipation air flow into the guide air duct.

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