A portable switch cabinet for fiber optic switches and its assembly method

Abstract

This application relates to a portable switch cabinet for fiber optic switches and its assembly method. It includes a cabinet body, multiple support plates, two front uprights, and two rear uprights. The support plates are detachably mounted on the two front and two rear uprights. Each support plate has an internal air cavity and multiple exhaust holes communicating with the air cavity on its upper surface. An exhaust fan is installed on the cabinet body. The exhaust fan's inlet is connected to a main exhaust pipe, which in turn connects to multiple branch exhaust pipes. These branch exhaust pipes communicate with the air cavities on the support plates. A valve mechanism is installed on each branch exhaust pipe to ensure that the branch exhaust pipe is only connected to the air cavity when a switch is positioned on the support plate. Each support plate in this application has an exhaust cooling effect. Even when maintenance is performed on some switches after the cabinet door is opened, the corresponding branch exhaust pipe is not connected to the air cavity on the support plate via the valve mechanism, reducing pneumatic heat dissipation loss and not affecting the heat dissipation of other switches.

Description

Technical Field

[0001] This application relates to the technical field of electrical cabinets, and in particular to a portable switch cabinet for fiber optic switches and its assembly method. Background Technology

[0002] A fiber optic switch is a network device that uses optical fiber as the transmission medium for data transmission. Compared to traditional Ethernet switches, fiber optic switches typically offer higher transmission speeds, longer transmission distances, and stronger immunity to electromagnetic interference. Switch cabinets are an important component of network equipment, primarily used to install and house network switches and other related network devices such as routers and firewalls.

[0003] Chinese patent application number CN202110202581.7 discloses an adjustable switch cabinet for fiber optic switches. It includes a rectangular box-shaped cabinet body with an opening on one side. The cabinet body has an installation compartment for installing adjustable switch docking racks. A cable tray connecting the installation compartment is centrally located on the side of the cabinet body away from the opening. Multiple adjustable switch docking racks are installed in the installation compartment, and multiple adjustable fiber optic cable trays are mounted on the cable tray to accommodate the number of adjustable switch docking racks. Each adjustable switch docking rack includes a support plate as its main structure. The support plate is a rectangular plate structure with a cable management mechanism on one side, and two L-shaped limiting plates are symmetrically arranged on the side of the support plate away from the cable tray. A support frame is constructed on the upper surface of the support plate. This adjustable switch cabinet for fiber optic switches has a reasonable structure, facilitates efficient heat dissipation, and is convenient for cable management and switch maintenance.

[0004] The aforementioned technologies have the following drawbacks: When the switch cabinet is fully loaded, switches are installed on each layer, and many cables are plugged into the switches, making it difficult for heat to dissipate between adjacent layers of switches, thus affecting the heat dissipation effect; in addition, the switches in the current switch cabinet are directly fixed to the uprights in the switch cabinet. When maintaining the switches, on the one hand, opening the cabinet door affects the input of cold air, and on the other hand, disassembling and assembling the switches is also time-consuming, which in turn affects the heat dissipation effect of other switches. Summary of the Invention

[0005] To address the issue of some switches in a switch cabinet affecting the heat dissipation of other switches during maintenance and the cumbersome operation, this application provides an adjustable switch cabinet for fiber optic switches and its assembly method.

[0006] The first aspect of this application provides a portable switch cabinet for fiber optic switches, which adopts the following technical solution:

[0007] An adjustable switch cabinet for fiber optic switches includes a cabinet body, multiple support plates, and two front columns and two rear columns vertically installed in the cabinet body. Multiple mounting holes are spaced apart on the front columns and the rear columns. The support plates are detachably installed on the two front columns and the two rear columns. The support plates have an air cavity inside and multiple air extraction holes communicating with the air cavity are opened on the upper end face.

[0008] The cabinet is equipped with an exhaust fan, the air inlet of which is connected to a main exhaust pipe extending into the cabinet. The main exhaust pipe is connected to multiple branch exhaust pipes, and the end of each branch exhaust pipe away from the main exhaust pipe is connected to the air chamber on the support plate.

[0009] The extraction branch pipe is equipped with a valve mechanism, which is used to ensure that the extraction branch pipe is connected to the air chamber only when an exchanger is placed on the support plate.

[0010] Furthermore, two parallel brackets are slidably arranged on the support plate, and the two brackets are used to jointly support a switch. The valve mechanism is configured to control the air extraction branch pipe to be disconnected from the air chamber when the bracket supports the switch and when the bracket has not been fully moved into the cabinet to the designated position.

[0011] Furthermore, the valve mechanism includes a valve sleeve disposed on the air extraction branch pipe. The valve sleeve has a first connector communicating with the air extraction branch pipe and a second connector communicating with the air chamber at its two opposite ends. The valve sleeve has a valve cavity communicating with both the first connector and the second connector. A piston is slidably disposed in the valve cavity. When the piston moves down to its bottom stroke, it blocks the first connector or the second connector. When the piston moves up, it enables communication between the first connector, the valve cavity and the second connector.

[0012] The valve mechanism also includes a control component for controlling the piston to lift when the bracket is moved into a designated position inside the cabinet.

[0013] Furthermore, the control component includes a first magnetic body fixed to one end of the bracket near the rear column and a second magnetic body fixed to the piston. A slide rod is fixed to the piston, extending through and to the outside of the valve housing. The second magnetic body is fixed to the outer end of the slide rod, and the second magnetic body and the first magnetic body are magnetically attracted to each other. When the bracket moves into the designated position inside the cabinet, the first magnetic body and the second magnetic body come into contact.

[0014] A return spring, sleeved on the slide rod, is also provided between the piston and the inner top wall of the valve housing.

[0015] Furthermore, the depth of the bracket is less than the depth of the support plate, and the support plate is provided with a front positioning element for positioning the bracket at one end near the front column;

[0016] When the bracket is positioned by the front positioning member, there is a gap between the first magnetic body and the second magnetic body.

[0017] Furthermore, the support plate is provided with a silicone sheet surrounding the outside of the plurality of air extraction holes, and the vertical dimension of the silicone sheet is not less than the distance between the bottom surface of the switch and the upper surface of the support plate when the switch is placed on the bracket.

[0018] Furthermore, a flow control plate is attached to the upper surface of the support plate, and a plurality of bimetallic strips with free ends extending into the air extraction hole are fixed on the flow control plate. The bimetallic strips are inclined at room temperature and partially cover the air extraction hole. The upper layer of the bimetallic strip is a metal with a high coefficient of thermal expansion, and the lower layer is a metal with a low coefficient of thermal expansion.

[0019] Furthermore, the support plate has two rear protrusions fixed to one end near the rear column, corresponding to the two rear columns, and two front protrusions elastically provided at the other end near the front column, corresponding to the two front columns. Both the rear protrusions and the front protrusions are inserted into and adapted to the mounting holes.

[0020] Furthermore, the support plate is provided with two receiving grooves at one end near the front column, which are respectively used to accommodate the two front protrusions. An elastic element is connected between the front protrusion and the bottom wall of the receiving groove, and a guide slope is provided on the upper end surface of the front protrusion.

[0021] The second aspect of this application provides a method for assembling a portable switch cabinet for fiber optic switches, which adopts the following technical solution:

[0022] An assembly method for a self-adjustable switch cabinet for fiber optic switches, based on the aforementioned self-adjustable switch cabinet for fiber optic switches, includes the following steps:

[0023] S1. Assemble the cabinet, and arrange the exhaust fan and the exhaust manifold in the cabinet, and then connect multiple exhaust branch pipes to the exhaust manifold.

[0024] S2. Install the corresponding number of the support plates onto the two front columns and the two rear columns;

[0025] S3. Connect the air chamber of the support plate to the corresponding air extraction branch pipe, and test the airtightness of the connection between the main air extraction pipe and the air chamber through the valve mechanism;

[0026] S4. Depending on the configuration, several switches may be placed on the multiple support plates.

[0027] In summary, the beneficial technical effects of this application are as follows:

[0028] 1. When the switch is placed on the support plate, the exhaust fan is turned on when the switch is working. The exhaust fan draws in hot air from the switch into the air chamber through multiple exhaust holes on the support plate. The hot air then flows through the exhaust branch pipes to the exhaust main pipe and is finally discharged by the exhaust fan. At this time, the air pressure inside the cabinet decreases, and the cooler clean air in the intake main pipe enters the cabinet under the action of air pressure. This can achieve a highly efficient heat dissipation effect for the switch in the switch cabinet of this application.

[0029] 2. Since each support plate has a ventilation and heat dissipation effect, even when some switches are maintained after the cabinet door is opened, the heat dissipation effect of other switches will not be affected. Furthermore, when no switch is placed on the support plate or when a switch is pulled out for maintenance, the corresponding exhaust branch pipe of the support plate is not connected to the air chamber on the support plate through the valve mechanism, which reduces the loss of pneumatic heat dissipation and can also slightly improve the heat dissipation effect of other switches in operation.

[0030] 3. When a switch is operating, it generates significant heat, resulting in high-temperature airflow drawn into the air chamber. This hot airflow acts on the bimetallic strip, causing the upper layer to expand and deform much more than the lower layer. This increases the downward bending of the bimetallic strip within the air extraction port, reducing the area of ​​the port obstructed and increasing the actual air intake. Consequently, this alters the overall air extraction volume of the multiple air extraction ports on the support plate, thus changing the air extraction and heat dissipation effect on the switch. Furthermore, this adjustment of the air extraction and heat dissipation effect is dynamically and autonomously adjusted based on the actual operating state of a single switch, unaffected by ambient temperature. It eliminates the need for complex temperature control components, is simple and easy to implement, saves energy, controls costs, reduces footprint, and facilitates the assembly and production of the switch cabinet described in this application. Attached Figure Description

[0031] Figure 1 This is a front view of the overall structure of an embodiment of this application;

[0032] Figure 2 This is a side sectional view of an embodiment of this application;

[0033] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0034] Figure 4 This is a cross-sectional structural diagram of an embodiment of this application;

[0035] Figure 5 yes Figure 4 A magnified view of part B in the middle section;

[0036] Figure 6 This is a cross-sectional view of the valve mechanism according to an embodiment of this application;

[0037] Figure 7 This is a cross-sectional view of the front end of the support plate according to an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Cabinet body; 11. Front upright; 12. Rear upright; 13. Mounting holes; 14. Main air intake pipe;

[0040] 2. Support plate; 21. Air chamber; 22. Air extraction hole; 23. Bracket; 24. Silicone sheet; 25. Receiving groove;

[0041] 31. Exhaust fan; 32. Main exhaust pipe; 33. Branch exhaust pipe;

[0042] 41. Valve sleeve; 411. Valve chamber; 42. First connector; 43. Second connector; 44. Piston; 45. Slide rod; 46. Return spring;

[0043] 51. First magnetic body; 52. Second magnetic body;

[0044] 6. Front positioning component;

[0045] 71. Flow control plate; 72. Bimetallic strip;

[0046] 81. Rear protrusion; 82. Front protrusion; 821. Guide slope; 83. Elastic element. Detailed Implementation

[0047] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] This application discloses a portable switch cabinet for fiber optic switches. (Refer to...) Figure 1 , Figure 2 and Figure 3 It includes a cabinet 1, multiple support plates 2, and two front columns 11 and two rear columns 12 vertically installed in the cabinet 1. The front columns 11 and rear columns 12 are arranged in parallel, and the support plates 2 are arranged perpendicular to the front columns 11. Multiple mounting holes 13 are spaced apart on both the front columns 11 and the rear columns 12. The support plates 2 can be detachably installed on the two front columns 11 and the two rear columns 12.

[0049] The support plate 2 has an air cavity 21 inside and multiple air extraction holes 22 connected to the air cavity 21 on its upper surface. The air extraction holes 22 can be circular or elongated.

[0050] A fan 31 is installed on the cabinet 1. The air inlet of the fan 31 is connected to a main exhaust pipe 32 extending into the cabinet 1. The main exhaust pipe 32 is connected to multiple branch exhaust pipes 33. Specifically, the branch exhaust pipes 33 are connected to the main exhaust pipe 32 via quick-connect air fittings. The branch exhaust pipes 33 are flexible hoses, and the end of the branch exhaust pipe 33 away from the main exhaust pipe 32 is connected to the air chamber 21 on the corresponding support plate 2. In addition, a main air inlet pipe 14 is also installed on the cabinet 1. To reduce heat dissipation interference between adjacent cabinets 1, the main air inlet pipe 14 is located on the side of the cabinet 1 away from the fan 31. Furthermore, to further reduce the impact of dust on the exchanger in the cabinet 1, the main air inlet pipe 14 is connected to the fresh air system.

[0051] A valve mechanism is provided on the exhaust branch pipe 33. The valve mechanism is used to ensure that the exhaust branch pipe 33 is connected to the air chamber 21 only when an exchanger is placed on the support plate 2.

[0052] With this setup, when the switch is placed on the support plate 2, the exhaust fan 31 is activated when the switch is in operation. The exhaust fan 31 draws in hot air from the switch into the air chamber 21 through the multiple exhaust holes 22 on the support plate 2. The hot air then flows through the exhaust branch pipe 33 to the exhaust main pipe 32 and is finally discharged by the exhaust fan 31. At this time, the air pressure inside the cabinet 1 decreases, and the cooler clean air in the intake main pipe 14 enters the cabinet 1 under the action of air pressure. This achieves a highly efficient heat dissipation effect for the switch in the switch cabinet of this application.

[0053] Furthermore, since each support plate 2 has a ventilation and heat dissipation effect, even when some switches are maintained after the cabinet door is opened, the heat dissipation effect of other switches will not be affected. Moreover, when no switch is placed on the support plate 2 or when the switch is pulled out for maintenance, the exhaust branch pipe 33 corresponding to the support plate 2 is not connected to the air chamber 21 on the support plate 2 by means of a valve mechanism, which reduces the loss of pneumatic heat dissipation and can also slightly improve the heat dissipation effect of other switches in operation, making it convenient to adjust the layout of the switch cabinet of this application.

[0054] Furthermore, to facilitate switch maintenance, refer to Figure 1 , Figure 2 and Figure 4Two parallel brackets 23 are slidably mounted on the support plate 2. The brackets 23 are L-shaped and are slidably mounted on the support plate 2 by rollers or balls embedded in the side of the support plate 2. The two brackets 23 are used to support one switch together. Specifically, the distance between the vertical sides of the two brackets 23 is adapted to the width of the switch. The valve mechanism is configured to control the air extraction branch pipe 33 to not communicate with the air chamber 21 when the bracket 23 slides out supporting the switch or when the bracket 23 has not completely moved into the cabinet 1 to the designated position.

[0055] Therefore, when maintaining the switch, simply remove the cable and then pull the switch. The switch slides outward from the support plate 2 using the two brackets 23. These brackets serve two purposes: supporting the switch and providing ample space for maintenance personnel to operate, greatly improving maintenance efficiency. Moreover, when the switch slides out a certain distance using the brackets 23, the air extraction branch pipe 33 is disconnected from the air chamber 21 by the valve mechanism, thus avoiding airflow loss during maintenance.

[0056] Specifically, refer to Figure 3 , Figure 5 and Figure 6 The valve mechanism includes a valve sleeve 41 installed on the air extraction branch pipe 33. The valve sleeve 41 has a first connector 42 that communicates with the air extraction branch pipe 33 and a second connector 43 that communicates with the air chamber 21 at its two opposite ends. The valve sleeve 41 has a valve chamber 411 that communicates with both the first connector 42 and the second connector 43. A piston 44 is installed in the valve chamber 411 and slides up and down. When the piston 44 moves down to the bottom end of its stroke, it blocks the first connector 42 or the second connector 43. When the piston 44 moves up, it enables the first connector 42, the valve chamber 411 and the second connector 43 to communicate.

[0057] The valve mechanism also includes a control component for controlling the piston 44 to lift when the bracket 23 is moved into a designated position within the cabinet 1.

[0058] The control assembly includes a first magnetic body 51 fixed to one end of the bracket 23 near the rear column 12 and a second magnetic body 52 fixed to the piston 44. A sliding rod 45, penetrating and extending outside the valve housing, is fixed to the piston 44. The second magnetic body 52 is fixed to the outer end of the sliding rod 45, and the second magnetic body 52 is magnetically attracted to the first magnetic body 51. When the bracket 23 moves into the designated position inside the cabinet 1, the first magnetic body 51 and the second magnetic body 52 come into contact. A return spring 46, sleeved on the sliding rod 45, is also provided between the piston 44 and the inner top wall of the valve housing. Furthermore, to ensure the accuracy of the interaction between the first magnetic body 51 and the second magnetic body 52, the valve sleeve 41 is fixedly mounted on the support plate 2.

[0059] Thus, when the switch is installed on the support plate 2 and the bracket 23 is pushed to the designated position, the switch is fully embedded in the cabinet 1. When the first magnetic body 51 on the bracket 23 moves above the second magnetic body 52, the magnetic attraction between the two drives the second magnetic body 52 to move the slide rod 45 upward, causing the piston 44 to move upward in the valve chamber 411 of the valve housing. The return spring 46 is compressed, and at this time the first connector 42, the valve chamber 411 and the second connector 43 are connected, so that the exhaust branch pipe 33 is connected to the air chamber 21 on the support plate 2. After the exhaust fan 31 is started, the heat emitted by the switch working on the support plate 2 can be drawn into the air chamber 21 with the airflow, and then discharged through the exhaust branch pipe 33 and the exhaust main pipe 32.

[0060] When no switch is placed on the support plate 2, the bracket 23 can be pulled forward until the first magnetic body 51 is away from the second magnetic body 52. ​​At this time, the elastic deformation force of the return spring 46 pushes the piston 44 downward in the valve chamber 411, separating the first connector 42 and the second connector 43, so that the exhaust branch pipe 33 and the air chamber 21 of the support plate 2 are not connected. Similarly, when the switch is pulled out through the bracket 23 during maintenance, the exhaust branch pipe 33 and the air chamber 21 of the support plate 2 are also not connected. This allows for the automatic opening and closing of the exhaust cooling function on a single support plate 2, reducing the impact on the exhaust cooling efficiency of the other support plates 2.

[0061] In addition, to prevent the bracket 23 from moving independently when no switch is placed on the support plate 2, refer to Figure 4 Furthermore, the bracket 23 is configured such that its depth is less than that of the support plate 2, and the support plate 2 has a front positioning element 6 for positioning the bracket 23 at one end near the front column 11. When the bracket 23 is positioned by the front positioning element 6, there is a gap between the first magnetic body 51 and the second magnetic body 52, and the front end of the bracket 23 will not interfere with the normal closing of the cabinet door on the cabinet body 1. In specific settings, the front positioning element 6 can be a combination of a magnet and an iron block, or a combination of an elastic protrusion and a groove.

[0062] Meanwhile, in order to further improve the heat dissipation efficiency of the multiple exhaust holes 22 on the support plate 2 for the switch, referring to Figure 2 and Figure 3 In another embodiment, a silicone sheet 24 is also provided on the support plate 2, surrounding the multiple exhaust holes 22. The vertical dimension of the silicone sheet 24 is not less than the distance between the bottom surface of the switch and the upper surface of the support plate 2 when the switch is placed on the bracket 23. Therefore, when the switch is placed on the bracket 23 and moved into a suitable position within the cabinet 1, the surrounding silicone sheet 24 can seal the space between the switch and the multiple exhaust holes 22, thereby improving the efficiency of the exhaust holes 22 in drawing hot air and improving the heat dissipation effect of the switch to a certain extent. This method is particularly suitable for switches with side air intake and bottom heat dissipation exhaust.

[0063] Considering that switches under different load conditions or different models of switches generate different amounts of heat during operation, in order to improve the precise adjustment of the heat dissipation effect of different switches, in one embodiment, referring to... Figure 3 and Figure 4 A flow control plate 71 is attached to the upper surface of the support plate 2. Multiple bimetallic strips 72 with free ends extending into the air extraction hole 22 are fixed on the flow control plate 71. The bimetallic strips 72 are inclined at room temperature and partially cover the air extraction hole 22. The upper layer of the bimetallic strip 72 is a metal with a high coefficient of thermal expansion, and the lower layer is a metal with a low coefficient of thermal expansion. In specific settings, the air extraction hole 22 is set as a long strip, which can facilitate the insertion of the inclined bimetallic strip 72. The bimetallic strip 72 can be a nickel-iron alloy-brass bimetallic strip 72, with brass as the upper layer and nickel-iron alloy as the lower layer. It can undergo significant expansion deformation at 40-60℃.

[0064] Therefore, when a switch is operating and generates a significant amount of heat, the airflow drawn into the air chamber 21 is at a high temperature. This hot airflow acts on the bimetallic strip 72, causing the upper layer of the bimetallic strip 72 to expand and deform much more than the lower layer. This results in a greater downward bending of the bimetallic strip 72 within the air extraction hole 22, thereby reducing the area of ​​the bimetallic strip 72 that obstructs the air extraction hole 22. This increases the actual air intake of the air extraction hole 22, thus altering the overall air extraction volume of the multiple air extraction holes 22 on the support plate 2 to a certain extent, thereby changing the air extraction and heat dissipation effect on the switch. Furthermore, this adjustment of the air extraction and heat dissipation effect is dynamically and autonomously adjusted based on the actual operating state of a single switch, unaffected by ambient temperature. It eliminates the need for complex temperature control components, is simple and easy to implement, saves energy, controls costs, reduces floor space, and facilitates the assembly and production of the switch cabinet of this application.

[0065] In addition, to facilitate the installation and removal of support plate 2, refer to Figure 1 , Figure 4 and Figure 7 Two rear protrusions 81, corresponding to the two rear columns 12, are fixedly connected to one end of the support plate 2 near the rear column 12. Two front protrusions 82, corresponding to the two front columns 11, are elastically provided at one end of the support plate 2 near the front column 11. Both the rear protrusions 81 and the front protrusions 82 are inserted into and adapted to the mounting holes 13. Specifically, the cross-sectional dimension of the rear protrusions 81 is slightly smaller than the dimension of the mounting holes 13. Furthermore, two receiving grooves 25, each for accommodating the two front protrusions 82, are provided at one end of the support plate 2 near the front column 11. An elastic element 83, which is a spring, connects the front protrusions 82 to the bottom wall of the receiving grooves 25. One end of the elastic element 83 is fixedly connected to the front protrusions 82, and the other end is fixedly connected to the bottom wall of the receiving grooves 25. A guide slope 821 is provided on the upper surface of the front protrusions 82.

[0066] When installing the support plate 2, it can be first tilted and inserted into the cabinet 1, with its rear end higher than its front end. Then, the two rear protrusions 81 on the support plate 2 are inserted into the mounting holes 13 at appropriate positions on the two rear uprights 12. Subsequently, the front end of the support plate 2 is gradually lifted. The guide slope 821 on the front protrusion 82 helps the front protrusion 82 slide on the front upright 11 and pass over the non-corresponding mounting holes 13. If necessary, the front protrusion 82 is pressed until it moves into the mounting hole 13 corresponding to the rear protrusion 81. The front protrusion 82 pops out from the receiving groove 25. At this time, the two front protrusions 82 and the two rear protrusions 81 can jointly support the support plate 2 to complete the installation of the support plate 2. If it is necessary to remove the support plate 2, simply press the front protrusion 82 to retract it into the receiving groove 25, then flip the support plate 2 to tilt it, and then remove or transfer the support plate 2 to a suitable installation position.

[0067] This application discloses an assembly method for a portable switch cabinet for fiber optic switches. Based on the above-mentioned portable switch cabinet for fiber optic switches, it includes the following steps:

[0068] S1. Assemble cabinet 1, and place exhaust fan 31 and exhaust manifold 32 in cabinet 1. Then connect multiple exhaust branch pipes 33 to exhaust manifold 32. Subsequently, connect the intake manifold 14 on cabinet 1 to the fresh air system.

[0069] S2. Install the corresponding number of support plates 2 onto the two front columns 11 and the two rear columns 12;

[0070] S3. Connect the air chamber 21 of the support plate 2 to the corresponding exhaust branch pipe 33, and test the air tightness of the connection between the exhaust main pipe 32 and the air chamber 21 through the valve mechanism. After the test is completed, temporarily position the bracket 23 of the support plate 2 through the front positioning part 6 to turn off the exhaust heat dissipation function of the support plate 2.

[0071] S4. According to the configuration requirements, several switches are placed on multiple support plates 2. Specifically, the switches are placed on the bracket 23, and the bracket 23 is pushed inward so that the first magnetic body 51 on the bracket 23 is aligned with the second magnetic body 52 on the adsorption valve housing, so as to activate the ventilation and heat dissipation function of the support plate 2.

[0072] The implementation principle of a portable switch cabinet for fiber optic switches in this application embodiment is as follows:

[0073] When the switch is placed on the support plate 2, the exhaust fan 31 is turned on when the switch is working. The exhaust fan 31 draws in hot air from the switch into the air chamber 21 through the multiple exhaust holes 22 on the support plate 2. The hot air then flows through the exhaust branch pipe 33 to the exhaust main pipe 32 and is finally discharged by the exhaust fan 31. At this time, the air pressure inside the cabinet 1 decreases, and the cooler clean air in the intake main pipe 14 enters the cabinet 1 under the action of air pressure. This can achieve a highly efficient heat dissipation effect for the switch in the switch cabinet of this application.

[0074] Furthermore, since each support plate 2 has a ventilation and heat dissipation function, even when some switches are maintained after the cabinet door is opened, the heat dissipation effect of other switches is not affected. When no switch is placed on the support plate 2 or when a switch is pulled out for maintenance, the bracket 23 is pulled forward until the first magnetic body 51 is away from the second magnetic body 52. ​​At this time, the elastic deformation force of the return spring 46 pushes the piston 44 downward in the valve chamber 411, separating the first connector 42 and the second connector 43. This disconnects the exhaust branch pipe 33 from the air chamber 21 of the support plate 2, and the exhaust branch pipe 33 corresponding to that support plate 2 is disconnected from the valve, reducing pneumatic heat dissipation loss and slightly improving the heat dissipation effect of other working switches. This allows for the automatic opening and closing of the ventilation and heat dissipation function on a single support plate 2, minimizing the impact on the ventilation and heat dissipation efficiency of the remaining support plates 2.

[0075] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0076] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A portable switch cabinet for fiber optic switches, comprising a cabinet body (1), multiple support plates (2), and two front columns (11) and two rear columns (12) vertically installed in the cabinet body (1), wherein multiple mounting holes (13) are spaced apart on both the front columns (11) and the rear columns (12), characterized in that, The support plate (2) can be detachably installed on the two front columns (11) and the two rear columns (12). The support plate (2) has an air cavity (21) inside and a plurality of air extraction holes (22) communicating with the air cavity (21) are opened on the upper end face. The cabinet (1) is equipped with an exhaust fan (31). The air inlet of the exhaust fan (31) is connected to an exhaust manifold (32) that extends into the cabinet (1). The exhaust manifold (32) is connected to a plurality of exhaust branch pipes (33). The end of the exhaust branch pipe (33) away from the exhaust manifold (32) is connected to the air chamber (21) on the support plate (2). The extraction branch pipe (33) is provided with a valve mechanism, which is used to connect the extraction branch pipe (33) to the air chamber (21) only when an exchanger is placed on the support plate (2).

2. The adjustable switch cabinet for fiber optic switches according to claim 1, characterized in that, Two parallel brackets (23) are slidably arranged on the support plate (2). The two brackets (23) are used to support a switch together. The valve mechanism is configured to control the air extraction branch pipe (33) to not communicate with the air chamber (21) when the bracket (23) slides out supporting the switch and when the bracket (23) has not completely moved into the cabinet (1) to the designated position.

3. The adjustable switch cabinet for fiber optic switches according to claim 2, characterized in that, The valve mechanism includes a valve sleeve (41) disposed on the air extraction branch pipe (33). The valve sleeve (41) is provided with a first connector (42) communicating with the air extraction branch pipe (33) and a second connector (43) communicating with the air chamber (21) at its two opposite ends. The valve sleeve (41) has a valve chamber (411) communicating with both the first connector (42) and the second connector (43). A piston (44) is slidably disposed in the valve chamber (411). When the piston (44) moves down to the bottom stroke, it blocks the first connector (42) or the second connector (43). When the piston (44) moves up, it enables the first connector (42), the valve chamber (411) and the second connector (43) to communicate. The valve mechanism also includes a control component for controlling the piston (44) to lift when the bracket (23) moves into a designated position within the cabinet (1).

4. The adjustable switch cabinet for fiber optic switches according to claim 3, characterized in that, The control assembly includes a first magnetic body (51) fixed to one end of the bracket (23) near the rear column (12) and a second magnetic body (52) fixed to the piston (44). A slide rod (45) is fixed to the piston (44) and extends through and to the outside of the valve sleeve (41). The second magnetic body (52) is fixed to the outer end of the slide rod (45). The second magnetic body (52) and the first magnetic body (51) are magnetically attracted to each other. When the bracket (23) moves into the designated position inside the cabinet (1), the first magnetic body (51) and the second magnetic body (52) come into contact. A return spring (46) sleeved on the slide rod (45) is also provided between the piston (44) and the inner top wall of the valve sleeve (41).

5. The adjustable switch cabinet for fiber optic switches according to claim 4, characterized in that, The depth of the bracket (23) is less than the depth of the support plate (2), and the support plate (2) is provided with a front positioning member (6) for positioning the bracket (23) at one end near the front column (11). When the bracket (23) is positioned by the front positioning member (6), there is a gap between the first magnetic body (51) and the second magnetic body (52).

6. The adjustable switch cabinet for fiber optic switches according to claim 2, characterized in that, The support plate (2) is provided with silicone sheets (24) surrounding the outside of the plurality of air extraction holes (22). The vertical dimension of the silicone sheets (24) is not less than the distance between the bottom surface of the switch and the upper surface of the support plate (2) when the switch is placed on the bracket (23).

7. A portable switch cabinet for fiber optic switches according to any one of claims 1-6, characterized in that, The upper surface of the support plate (2) is attached to a flow control plate (71). Multiple bimetallic strips (72) with free ends extending into the air extraction hole (22) are fixed on the flow control plate (71). The bimetallic strips (72) are inclined at room temperature and partially cover the air extraction hole (22). The upper layer of the bimetallic strips (72) is a metal with a high coefficient of thermal expansion, and the lower layer is a metal with a low coefficient of thermal expansion.

8. A portable switch cabinet for fiber optic switches according to any one of claims 1-6, characterized in that, The support plate (2) has two rear protrusions (81) fixed to one end near the rear column (12) and two front protrusions (82) corresponding to the two rear columns (12). The support plate (2) has two front protrusions (82) elastically provided at one end near the front column (11) and both the rear protrusions (81) and the front protrusions (82) are inserted into the mounting holes (13).

9. A portable switch cabinet for fiber optic switches according to claim 8, characterized in that, The support plate (2) has two receiving grooves (25) at one end near the front column (11) for accommodating the two front protrusions (82), and an elastic element (83) is connected between the front protrusion (82) and the bottom wall of the receiving groove (25). The upper surface of the front protrusion (82) is provided with a guide slope (821).

10. A method for assembling a self-adjustable switch cabinet for fiber optic switches, based on the self-adjustable switch cabinet for fiber optic switches as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Assemble the cabinet (1), and arrange the exhaust fan (31) and the exhaust manifold (32) in the cabinet (1), and then connect multiple exhaust branch pipes (33) to the exhaust manifold (32). S2. Install the corresponding number of the multiple support plates (2) onto the two front columns (11) and the two rear columns (12); S3. Connect the air chamber (21) of the support plate (2) to the corresponding air extraction branch pipe (33), and test the air tightness of the connection between the main air extraction pipe (32) and the air chamber (21) through the valve mechanism; S4. Depending on the configuration, several switches may be placed on multiple support plates (2).

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