Active ventilation sheet metal box

Abstract

The present invention relates to the technical field of ventilation boxes, and discloses an active ventilation type sheet metal box, comprising: a box and a shielding cover arranged on the top of the box, and also comprising: a ventilation part fixed in the box, used for temperature triggering to open the ventilation channel to improve heat dissipation efficiency; a negative pressure part fixed in the shielding cover, used for generating negative pressure to drive the hot air in the box and in the ventilation part to flow; a closing part, slidably arranged on the shielding cover, used for expanding the heat dissipation channel; a cold air part, fixed on both sides of the box, used for cooling the outside air and entering the box; the present invention allows heat to enter the concave square tube from the heat absorption groove, and heat to enter the ventilation tube from the concave square tube. By closing and opening the closing plate, temperature control areas can be dynamically divided or merged, so that the temperature heat dissipation can be finely regulated according to different temperature requirements, thereby greatly improving the heat dissipation efficiency of the box, ensuring the stable working temperature of the internal equipment, and maintaining good heat dissipation performance under changing working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation boxes, and in particular to an active ventilation type sheet metal box. Background Art

[0002] Traditional sheet metal enclosures typically utilize passive cooling technology, dissipating heat through natural convection or external fans. However, as device performance continues to improve, so too does the need for cooling. Traditional cooling methods are no longer able to meet the high demands of modern high-performance equipment. This has led to a surge in the development of active cooling technology, particularly for enclosed sheet metal enclosures. Achieving efficient temperature control and heat dissipation within the confines of a space has become a pressing challenge.

[0003] Among existing cooling technologies, some designs utilize a single fan-based cooling method. While this method can provide some cooling effectiveness, it often fails to achieve targeted temperature control due to uneven air flow and limited ability to regulate local hotspots. Furthermore, conventional cooling systems suffer from low energy efficiency, high noise levels, and slow response to temperature fluctuations, making them unable to maintain stable cooling performance in changing operating environments.

[0004] Existing sheet metal enclosure cooling systems typically rely on a monolithic design, lacking the ability to dynamically adjust temperature zones. This approach not only fails to precisely address the cooling needs of different components, but can also lead to unnecessary cooling energy consumption and resource waste. Summary of the Invention

[0005] The present invention provides an active ventilation type sheet metal box body, which effectively dissipates local temperature by dividing the area.

[0006] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0007] In a first aspect, an actively ventilated sheet metal box includes: a box and a shielding cover disposed on the top of the box, and further includes:

[0008] The ventilation element is fixed in the box and is used to trigger the opening of the ventilation channel by temperature to improve the heat dissipation efficiency. The negative pressure element is fixed in the shielding cover and is used to generate negative pressure to drive the hot air in the box and the ventilation element to flow. The closing element is slidably set on the shielding cover to expand the heat dissipation channel. The cooling element is fixed on both sides of the box to cool the outside air and let it enter the box.

[0009] There are multiple concave square tubes, which are fixed in the box at equal intervals; the ventilation pipe is fixed on the concave square tube; and the heat absorption groove is opened on the concave square tube.

[0010] The negative pressure box is fixed in the shielding cover and is fixedly connected to the ventilation pipe; the motor frame is fixed in the negative pressure box; the negative pressure motor is fixed on the motor frame; the negative pressure fan blade is fixed on the negative pressure motor; the negative pressure tank is opened on the shielding cover; the first negative pressure filter plate is fixed in the negative pressure tank;

[0011] A closing groove is provided on the shielding cover; a closing plate is slidably arranged in the closing groove;

[0012] The cooling air pipe is fixed in the box and is located on both sides of the box.

[0013] Furthermore, the ventilation component further includes:

[0014] The thermal expansion tube is fixed on the concave square tube, and the piston is slidably arranged in the thermal expansion tube; one end of the slide rod is fixed on the piston and the other end extends out of the thermal expansion tube; the linkage frame is fixed on the slide rod; the closing plate is fixed on the linkage frame and is located in the heat absorption groove; the temperature sensor is fixed on the ventilation tube and is located in the shielding cover.

[0015] Furthermore, the ventilation component further includes:

[0016] The switching motor is fixed on the concave square tube; the switching rod is rotatably plugged into the concave square tube; the switching bevel gear, the input end bevel gear is fixed on the switching motor, and the output end bevel gear is fixed on the switching rod; the switching plate is fixed on the switching rod and is located in the concave square tube.

[0017] Furthermore, the negative pressure member further comprises:

[0018] The second negative pressure filter plate is fixed on the negative pressure box; the clamping plate is fixed in the negative pressure box; the opening and closing plate is slidably arranged in the clamping plate; the extension rod is fixed on the opening and closing plate; the opening and closing gear group is fixed on the extension rod; the opening and closing motor has its base fixed on the negative pressure box; the opening and closing gear is fixed on the opening and closing motor and meshes with the opening and closing gear group.

[0019] Furthermore, the negative pressure member further comprises:

[0020] The isolation plate is slidably inserted on both sides of the negative pressure box; the extension plate is fixed on the isolation plate and is located outside the negative pressure box; the closed gear group is fixed on the extension plate; the closed motor has a base fixed on the negative pressure box; the closed gear is fixed on the closed motor and meshes with the closed gear group.

[0021] Furthermore, the closure element further comprises:

[0022] The sliding guide seat is fixed in the shielding cover, and both ends of the sliding guide rod are fixed on the sliding guide seat; the linkage plate is fixed on the closing plate at both ends and is slidably sleeved on the sliding guide rod; the displacement plate is fixed on the closing plate.

[0023] Furthermore, the closure element further comprises:

[0024] The closing motor is fixed in the shielding cover; the rotating seat is fixed in the shielding cover; the first threaded rod has one end fixed on the closing motor and the other end rotatably set on the rotating seat and is threadedly inserted into the linkage plate; the second threaded rod has two ends rotatably set on the rotating seat and is threadedly inserted into the displacement plate; the closing bevel gear pair, the input end bevel gear is fixed on the first threaded rod, and the output end bevel gear is fixed on the second threaded rod.

[0025] Furthermore, the cooling unit further comprises:

[0026] The condenser tube is fixed on the cooling pipe at both ends and is located outside the box; the condenser sub-tube is fixedly plugged into the condenser tube at one end; the heat sink is fixed on the condenser sub-tube; the cold air trough is opened under the cooling pipe.

[0027] Furthermore, the cooling unit further comprises:

[0028] The condensing ring is fixed on the condensing tube; the spring ring seat is fixed on the condensing tube; the floating spring is fixed on the spring ring seat and is located between the condensing ring and the spring ring seat; the liquid valve ball is fixed on the floating spring.

[0029] Furthermore, it also includes:

[0030] The heat dissipation mesh plate is fixed in the shielding cover; the heat dissipation motor is fixed in the shielding cover; the heat dissipation fan blades are fixed on the heat dissipation motor; the foot block is fixed under the box body; and the box door plate is rotated on the box body.

[0031] The above solution of the present invention includes at least the following beneficial effects:

[0032] The present invention allows heat to enter the concave square tube from the heat absorption groove, and then enter the ventilation tube from the concave square tube. By closing and opening the sealing plate, the temperature control areas can be dynamically divided or merged, so as to finely regulate the heat dissipation of the temperature according to different temperature requirements, greatly improving the heat dissipation efficiency of the box, ensuring the stable working temperature of the internal equipment, and maintaining good heat dissipation performance under changing working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the overall structure of an active ventilation sheet metal box from a first perspective provided by an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of the overall structure of an active ventilation sheet metal box from a second perspective provided by an embodiment of the present invention;

[0035] Figure 3 A schematic structural diagram of a negative pressure component of an active ventilation sheet metal box provided by an embodiment of the present invention;

[0036] Figure 4 An active ventilation type sheet metal box provided by an embodiment of the present invention Figure 3 A magnified view of point A;

[0037] Figure 5 An active ventilation type sheet metal box provided by an embodiment of the present invention Figure 3 Enlarged view of point B;

[0038] Figure 6 A schematic structural diagram of a negative pressure box of an actively ventilated sheet metal box provided by an embodiment of the present invention;

[0039] Figure 7 An active ventilation type sheet metal box provided by an embodiment of the present invention Figure 6 Enlarged view of point C;

[0040] Figure 8 A schematic structural diagram of a cooling air duct of an active ventilation sheet metal box provided by an embodiment of the present invention;

[0041] Figure 9 An active ventilation type sheet metal box provided by an embodiment of the present invention Figure 8 Enlarged view of point D;

[0042] Figure 10 An active ventilation type sheet metal box provided by an embodiment of the present invention Figure 8 Enlarged view of point E;

[0043] Figure 11 A schematic structural diagram of a concave square tube of an active ventilation sheet metal box provided by an embodiment of the present invention;

[0044] Figure 12 An active ventilation type sheet metal box provided by an embodiment of the present invention Figure 11 Enlarged view of point F;

[0045] Figure 13 A schematic structural diagram of a ventilation duct of an active ventilation sheet metal box provided by an embodiment of the present invention;

[0046] Figure 14 An active ventilation type sheet metal box provided by an embodiment of the present invention Figure 13 Enlarged view of point G.

[0047] Description of reference numerals:

[0048] In the figure: 1. Box body; 2. Shielding cover; 3. Ventilation element; 301. Concave square tube; 302. Ventilation pipe; 303. Heat absorption groove; 304. Thermal expansion pipe; 305. Piston; 306. Sliding rod; 307. Linkage frame; 308. Closing plate; 309. Temperature sensor; 3010. Switching motor; 3011. Switching rod; 3012. Switching bevel gear; 3013. Switching plate; 4. Negative pressure element; 401. Negative pressure box; 402. Motor frame; 403. Negative pressure motor; 404. Negative pressure fan blade; 405. Negative pressure groove; 406. First negative pressure filter plate; 407. Second negative pressure filter plate; 408. Clamping plate; 409. Opening and closing plate; 4010. Extension rod; 4011. Opening and closing gear set; 4012. Opening and closing motor; 4013. Opening and closing gear; 4014 , isolation plate; 4015, extension plate; 4016, closed gear group; 4017, closed motor; 4018, closed gear; 5, closing part; 501, closed groove; 502, closing plate; 503, sliding guide seat; 504, sliding guide rod; 505, linkage plate; 506, displacement plate; 507, closed motor; 508, rotating seat; 509, first threaded rod; 5010, second threaded rod; 5011, closed bevel gear pair; 6, cooling part; 601, cooling pipe; 602, condensing pipe; 603, condensing sub-pipe; 604, heat sink; 605, cold air slot; 606, condensing ring; 607, spring ring seat; 608, floating spring; 609, liquid valve ball; 7, heat dissipation mesh plate; 8, heat dissipation motor; 9, heat dissipation fan blade; 10, foot block; 11, door panel. DETAILED DESCRIPTION

[0049] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0050] like Figures 1 to 14 As shown, an embodiment of the present invention provides an actively ventilated sheet metal box, comprising: a box 1 and a shielding cover 2 arranged on the top of the box 1, and further comprising: a ventilation member 3 fixed in the box 1, for triggering the opening of a ventilation channel by temperature to improve heat dissipation efficiency; a negative pressure member 4 fixed in the shielding cover 2, for generating negative pressure to drive the hot air in the box 1 and the ventilation member 3 to flow; a closing member 5 slidably arranged on the shielding cover 2, for expanding the heat dissipation channel; and a cooling member 6 fixed on both sides of the box 1, for cooling the outside air and allowing it to enter the box 1.

[0051] There are multiple concave square tubes 301, and the multiple concave square tubes 301 are fixed at equal intervals in the box body 1; the ventilation pipe 302 is fixed on the concave square tube 301; the heat absorption groove 303 is opened on the concave square tube 301; the negative pressure box 401 is fixed in the shielding cover 2 and is fixedly connected to the ventilation pipe 302; the motor frame 402 is fixed in the negative pressure box 401; the negative pressure motor 403 is fixed on the motor frame 402; the negative pressure fan blade 404 is fixed on the negative pressure motor 403; the negative pressure groove 405 is opened on the shielding cover 2; the first negative pressure filter plate 406 is fixed in the negative pressure groove 405; the closing groove 501 is opened on the shielding cover 2; the closing plate 502 is slidably set in the closing groove 501; the cold air pipe 601 is fixed in the box body 1 and is located on both sides of the box body 1.

[0052] It also includes: a heat dissipation mesh plate 7, fixed in the shielding cover 2; a heat dissipation motor 8, fixed in the shielding cover 2; a heat dissipation fan blade 9, fixed on the heat dissipation motor 8; a foot block 10, fixed under the box body 1; and a box door panel 11, which rotates on the box body 1.

[0053] Specifically, multiple concave square tubes 301 are provided to divide the temperature control areas, and the temperature control areas can be dynamically divided or merged, so as to perform fine regulation according to different temperature requirements; the concave square tubes 301, the ventilation tubes 302 and the negative pressure box 401 form a channel for air flow.

[0054] By dividing the temperature control area from bottom to top through the concave square tube 301, local high temperature can be further dissipated; then by closing the switching plate 3013 in the concave square tube 301, the temperature control area is divided into two rows, and divided from bottom to top, local high temperature can be further accurately dissipated.

[0055] It combines multiple heat dissipation mechanisms, such as thermal expansion heat dissipation, negative pressure heat dissipation, external air cooling, etc., and provides accurate and effective heat dissipation solutions in different temperature control areas through different heat dissipation strategies; this combination of multiple methods ensures efficient heat dissipation even in complex working environments, and avoids excessive heat dissipation or insufficient heat dissipation; the condensation system not only reduces the air temperature, but also effectively removes moisture in the air, avoiding the impact of excessive humidity on electrical components in the box 1; an efficient heat dissipation system is adopted, which can effectively regulate the temperature in the box under various environmental conditions, avoiding the risk of equipment damage or performance degradation due to excessive temperature; the present invention helps to extend the service life of the equipment and improve the stability of the equipment.

[0056] As a preferred embodiment of the present invention, the ventilation component 3 also includes: a thermal expansion tube 304, fixed on the concave square tube 301, a piston 305, slidably arranged in the thermal expansion tube 304; a sliding rod 306, one end of which is fixed on the piston 305, and the other end extends out of the thermal expansion tube 304, a linkage frame 307, fixed on the sliding rod 306, a closing plate 308, fixed on the linkage frame 307, and located in the heat absorption groove 303; a temperature sensor 309, fixed on the ventilation tube 302, and located in the shielding cover 2.

[0057] The ventilation component 3 also includes: a switching motor 3010, fixed on the concave square tube 301; a switching rod 3011, rotatably plugged into the concave square tube 301; a switching bevel gear 3012, the input end bevel gear is fixed on the switching motor 3010, and the output end bevel gear is fixed on the switching rod 3011; a switching plate 3013, fixed on the switching rod 3011, and located in the concave square tube 301.

[0058] Specifically, there is thermally expanded gas inside the thermal expansion tube 304, and the piston 305 will push the movement of the piston 305 according to the expanded gas. A return spring is provided on the slide rod 306 to assist in resetting when the piston 305 moves; the switching plate 3013 divides a concave square tube 301 into two parts.

[0059] As a preferred embodiment of the present invention, the negative pressure part 4 also includes: a second negative pressure filter plate 407, fixed on the negative pressure box 401; a clamping plate 408, fixed in the negative pressure box 401; an opening and closing plate 409, slidably arranged in the clamping plate 408; an extension rod 4010, fixed on the opening and closing plate 409; an opening and closing gear group 4011, fixed on the extension rod 4010; an opening and closing motor 4012, the base of which is fixed on the negative pressure box 401; an opening and closing gear 4013, fixed on the opening and closing motor 4012, and meshing with the opening and closing gear group 4011.

[0060] The negative pressure member 4 also includes: an isolation plate 4014, which is slidably inserted on both sides of the negative pressure box 401; an extension plate 4015, which is fixed on the isolation plate 4014 and is located on the outside of the negative pressure box 401; a closed tooth group 4016, which is fixed on the extension plate 4015; a closed motor 4017, whose base is fixed on the negative pressure box 401; and a closed gear 4018, which is fixed on the closed motor 4017 and meshes with the closed tooth group 4016.

[0061] Specifically, the clamping plate 408 is used to limit the position of the opening and closing plate 409, so that the opening and closing plate 409 can only slide back and forth within the clamping plate 408; the isolation plate 4014 is located on both sides of the negative pressure box 401, and the two isolation plates 4014 can separately close one side of the negative pressure box 401.

[0062] As a preferred embodiment of the present invention, the closing member 5 also includes: a sliding guide seat 503, fixed in the shielding cover 2, a sliding guide rod 504, both ends of which are fixed on the sliding guide seat 503; a linkage plate 505, both ends of which are fixed on the closing plate 502, and slidably sleeved on the sliding guide rod 504; and a displacement plate 506, fixed on the closing plate 502.

[0063] The closing member 5 also includes: a closing motor 507, fixed in the shielding cover 2; a rotating seat 508, fixed in the shielding cover 2; a first threaded rod 509, one end of which is fixed on the closing motor 507, and the other end is rotatably set on the rotating seat 508, and is threadedly inserted into the linkage plate 505; a second threaded rod 5010, both ends of which are rotatably set on the rotating seat 508, and are threadedly inserted into the displacement plate 506; a closing bevel gear pair 5011, the input end bevel gear is fixed on the first threaded rod 509, and the output end bevel gear is fixed on the second threaded rod 5010.

[0064] Specifically, the linkage plate 505 slides back and forth on the sliding guide rod 504, driving the closing plate 502 to open and close in the closing groove 501, so as to open the heat dissipation port.

[0065] As a preferred embodiment of the present invention, the cooling component 6 also includes: a condenser tube 602, both ends of which are fixed on the cooling tube 601 and located outside the box body 1; a condenser sub-tube 603, one end of which is fixedly plugged into the condenser tube 602; a heat sink 604, which is fixed on the condenser sub-tube 603; and a cold air trough 605, which is opened below the cooling tube 601.

[0066] The cooling component 6 also includes: a condensation ring 606, fixed on the condensation tube 602; a spring ring seat 607, fixed on the condensation tube 602; a floating spring 608, fixed on the spring ring seat 607, and located between the condensation ring 606 and the spring ring seat 607; and a liquid valve ball 609, fixed on the floating spring 608.

[0067] Specifically, the condensing sub-tube 603 and the heat sink 604 lower the temperature of the outside air and condense the moisture in the outside air. The temperature reduction effectively ensures that the temperature inside the box 1 is lowered. At the same time, it prevents air with high humidity from entering the box 1 and affecting the normal use of the electrical components in the box 1. Ammonia liquid is stored inside the condensing sub-tube 603. When absorbing heat, the ammonia liquid is converted into gaseous ammonia. The gaseous ammonia dissipates heat in the heat sink 604, and the gaseous ammonia is converted into liquid ammonia and flows back into the condensing sub-tube 603.

[0068] Working principle: Active ventilation sheet metal boxes are usually used for shell protection and heat dissipation of electronic equipment, mechanical equipment, distribution cabinets, etc.

[0069] The present invention adopts a temperature-controlled zoned heat dissipation design, dividing multiple concave square tubes 301 into multiple zones, so as to effectively dissipate heat in areas with local temperature increases based on the heating characteristics of electrical components; since electrical components usually cause local temperature increases and diffuse to the surroundings through thermal radiation, coupled with the natural rising characteristics of hot air in the box 1, the present invention sets a temperature threshold, and when the temperature of a certain area reaches the threshold, it automatically triggers the heat dissipation process of that area.

[0070] The local temperature in the box body 1 rises, and the thermal expansion gas in the thermal expansion tube 304 is affected by the temperature. The gas expands thermally, and the pressure increases. The expansion trend will generate sufficient force to push the piston 305 to move outward. One end of the piston 305 drives the movement of the slide rod 306, and one end of the slide rod 306 drives the movement of the linkage frame 307. The movement of the linkage frame 307 drives the closing plate 308 to separate from the heat absorption groove 303. The local temperature in the box body 1 is more easily dissipated through the heat absorption groove 303. This design can improve the heat dissipation efficiency, avoid excessive heat dissipation of the box body 1, and enable the heat dissipation system to more effectively deal with hot spots.

[0071] Heat enters the concave square tube 301 from the heat absorption groove 303, and heat enters the ventilation tube 302 from the concave square tube 301. The temperature sensor 309 detects the temperature change in the ventilation tube 302 and opens the heat dissipation mode accordingly. By closing and opening the sealing plate 308, the temperature control areas can be dynamically divided or merged, thereby performing fine-tuning according to different temperature requirements.

[0072] Close the opening and closing plate 409, open the isolation plate 4014, start the negative pressure motor 403, and the rotation of the rotating shaft of the negative pressure motor 403 drives the rotation of the negative pressure fan blades 404. The rotation of the negative pressure fan blades 404 drives the air flow inside the negative pressure box 401. The side of the negative pressure box 401 close to the ventilation pipe 302 is in a negative pressure state. The negative pressure state draws hot air through the concave square tube 301 and the ventilation pipe 302, and the hot air dissipates heat from the first negative pressure filter plate 406.

[0073] Start the opening and closing motor 4012. The rotation of the opening and closing motor 4012 drives the rotation of the opening and closing gear 4013. The opening and closing gear 4013 engages with the opening and closing gear set 4011. The rotation of the opening and closing gear 4013 drives the opening and closing gear set 4011 and the extension rod 4010 to move. The displacement of the extension rod 4010 drives the opening and closing plate 409 to open and close in the negative pressure box 401.

[0074] Start the sealing motor 4017. The rotation of the sealing motor 4017 drives the rotation of the sealing gear 4018. The sealing gear 4018 engages with the sealing gear set 4016. The rotation of the sealing gear 4018 drives the sealing gear set 4016 and the extension plate 4015 to move. The movement of the extension plate 4015 drives the isolation plate 4014 to open and close on both sides of the negative pressure box 401.

[0075] Start the switching motor 3010. The rotation of the switching motor 3010 drives the rotation of the switching bevel gear 3012. The rotation of the switching bevel gear 3012 drives the rotation of the switching rod 3011. The rotation of the switching rod 3011 drives the switching plate 3013 to open and close in the concave square tube 301. When closed, the concave square tube 301 is divided into two parts. When opened, the concave square tube 301 is not divided.

[0076] The temperature-controlled zone heat dissipation design of the present invention includes the following: a first type of temperature-controlled zone heat dissipation divides the temperature control area from bottom to top through the concave square tube 301, which can further dissipate the local high temperature; a second type of temperature-controlled zone heat dissipation divides the temperature control area into two rows through the switching plate 3013 closed in the concave square tube 301, and the temperature control area is divided from bottom to top, which can further accurately dissipate the local high temperature; the first type of temperature-controlled zone heat dissipation adopts the heat dissipation of more electrical components and more heat sources in the same layer area; the second type of temperature-controlled zone heat dissipation adopts the heat dissipation of a single heat source on both sides of the box body 1.

[0077] The first type of temperature-controlled regional heat dissipation is that the isolation plates 4014 are located on both sides of the negative pressure box 401 and are in an open state, and the opening and closing plates 409 are in a closed state on the negative pressure box 401; the second type of temperature-controlled regional heat dissipation is that the isolation plates 4014 are located on both sides of the negative pressure box 401, and the concave square tubes 301 on the corresponding side of the box body 1 are opened according to the position of the heat source for effective heat dissipation.

[0078] When the temperature threshold is lower than the temperature at which the gas expansion in the thermal expansion tube 304 triggers the switch, the heat dissipation motor 8 is started, and the rotation of the heat dissipation motor 8 drives the rotation of the heat dissipation fan blades 9, and the heat dissipation fan blades 9 absorb hot air from the heat dissipation mesh plate 7 to the outside of the box 1; the opening and closing plate 409 is opened, and the isolation plate 4014 is closed; the closing motor 507 is started, and the rotation of the closing motor 507 drives the rotation of the first threaded rod 509, and the rotation of the first threaded rod 509 drives the linkage plate 505 to move along the sliding guide rod 504, and the rotation of the first threaded rod 509 The movement drives the closed bevel gear pair 5011 to rotate, the rotation of the closed bevel gear pair 5011 drives the rotation of the second threaded rod 5010, the rotation of the second threaded rod 5010 drives the movement of the displacement plate 506, the displacement plate 506 and the linkage plate 505 drive the closing plate 502 to open and close in the closing slot 501; the closing slot 501 is in the open state, and the heat dissipation fan blades 9 absorb hot air from the box body 1 to reduce the temperature inside the box body 1; the opening and closing plate 409 and the isolation plate 4014 can also be closed to dissipate heat.

[0079] When heat is dissipated from the cabinet 1, the cabinet 1 is usually in a negative pressure state, and the outside air enters the condenser tube 602 through the cold air pipe 601. The air absorbs heat through the condenser tube 603. The condenser tube 603 contains liquid ammonia. The liquid ammonia absorbs heat and transforms from liquid to gas. The gaseous ammonia enters the heat sink 604, where it dissipates heat from the gaseous ammonia and is converted into liquid ammonia. The liquid ammonia flows back into the condenser tube 603. The condensed water flows into the bottom of the condenser tube 602. When the water accumulates, the water pressure is applied to the liquid valve ball 609, causing the water to seep out from the liquid valve ball 609 and be discharged from the bottom of the condenser tube 602. This lowers the temperature of the outside air and condenses the moisture in the outside air. The temperature reduction effectively ensures that the temperature inside the cabinet 1 is lowered. At the same time, it prevents air with high humidity from entering the cabinet 1 and affecting the normal use of the electrical components inside the cabinet 1.

[0080] The present invention allows heat to enter the concave square tube 301 from the heat absorption groove 303, and then enter the ventilation tube 302 from the concave square tube 301. By closing and opening the sealing plate 308, the temperature control areas can be dynamically divided or merged, thereby finely regulating the temperature according to different temperature requirements. The heat dissipation efficiency of the box is greatly improved, the stable operating temperature of the internal equipment is ensured, and good heat dissipation performance is maintained under a changing working environment.

[0081] The present invention combines multiple heat dissipation mechanisms, such as thermal expansion heat dissipation, negative pressure heat dissipation, external air cooling, etc., and provides accurate and effective heat dissipation solutions in different temperature control areas through different heat dissipation strategies; this combination of multiple methods ensures efficient heat dissipation even in complex working environments, and avoids excessive heat dissipation or insufficient heat dissipation; the condensation system not only reduces the air temperature, but also effectively removes moisture in the air, avoiding the impact of excessive humidity on electrical components in the box 1; the design of the condenser tube 602, the condenser sub-tube 603 and the heat sink 604 can effectively isolate the moisture in the outside air and cool the outside air, thereby protecting the internal electronic equipment from drying out in a humid environment; an efficient heat dissipation system is adopted, which can effectively regulate the temperature in the box under various environmental conditions, avoiding the risk of equipment damage or performance degradation due to excessive temperature; the present invention helps to extend the service life of the equipment and improve the stability of the equipment.

[0082] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An active ventilation sheet metal box, comprising: The box body and the shielding cover arranged on the top of the box body are characterized by further comprising: The ventilation element is fixed in the box and is used to trigger the opening of the ventilation channel by temperature to improve the heat dissipation efficiency. The negative pressure element is fixed in the shielding cover and is used to generate negative pressure to drive the hot air in the box and the ventilation element to flow. The closing element is slidably set on the shielding cover to expand the heat dissipation channel. The cooling element is fixed on both sides of the box to cool the outside air and let it enter the box. There are multiple concave square tubes, which are fixed in the box at equal intervals; the ventilation pipe is fixed on the concave square tube; and the heat absorption groove is opened on the concave square tube. The negative pressure box is fixed in the shielding cover and is fixedly connected to the ventilation pipe; the motor frame is fixed in the negative pressure box; the negative pressure motor is fixed on the motor frame; the negative pressure fan blade is fixed on the negative pressure motor; the negative pressure tank is opened on the shielding cover; the first negative pressure filter plate is fixed in the negative pressure tank; A closing groove is provided on the shielding cover; a closing plate is slidably arranged in the closing groove; The cooling air pipe is fixed in the box and is located on both sides of the box; The ventilation component also includes: The thermal expansion tube is fixed on the concave square tube, and the piston is slidably arranged in the thermal expansion tube; the sliding rod has one end fixed on the piston and the other end extending out of the thermal expansion tube; the linkage frame is fixed on the sliding rod; the closing plate is fixed on the linkage frame and is located in the heat absorption groove; the temperature sensor is fixed on the ventilation tube and is located in the shielding cover; the switching motor is fixed on the concave square tube; the switching rod is rotatably plugged into the concave square tube; the switching bevel gear has the input end bevel gear fixed on the switching motor and the output end bevel gear fixed on the switching rod; the switching plate is fixed on the switching rod and is located in the concave square tube; The negative pressure member further comprises: The second negative pressure filter plate is fixed on the negative pressure box; the clamping plate is fixed in the negative pressure box; the opening and closing plate is slidably arranged in the clamping plate; the extension rod is fixed on the opening and closing plate; the opening and closing gear group is fixed on the extension rod; the opening and closing motor has its base fixed on the negative pressure box; the opening and closing gear is fixed on the opening and closing motor and meshes with the opening and closing gear group.

2. The active ventilation sheet metal box according to claim 1, characterized in that: The negative pressure member further comprises: The isolation plate is slidably inserted on both sides of the negative pressure box; the extension plate is fixed on the isolation plate and is located outside the negative pressure box; the closed gear group is fixed on the extension plate; the closed motor has a base fixed on the negative pressure box; the closed gear is fixed on the closed motor and meshes with the closed gear group.

3. The active ventilation sheet metal box according to claim 1, characterized in that: The closure further comprises: The sliding guide seat is fixed in the shielding cover, and both ends of the sliding guide rod are fixed on the sliding guide seat; the linkage plate is fixed on the closing plate at both ends and is slidably sleeved on the sliding guide rod; the displacement plate is fixed on the closing plate.

4. The active ventilation sheet metal box according to claim 3, characterized in that: The closure further comprises: The closing motor is fixed in the shielding cover; the rotating seat is fixed in the shielding cover; the first threaded rod has one end fixed on the closing motor and the other end rotatably set on the rotating seat and is threadedly inserted into the linkage plate; the second threaded rod has two ends rotatably set on the rotating seat and is threadedly inserted into the displacement plate; the closing bevel gear pair, the input end bevel gear is fixed on the first threaded rod, and the output end bevel gear is fixed on the second threaded rod.

5. The active ventilation sheet metal box according to claim 1, characterized in that: The cooling element further comprises: The condenser tube is fixed on the cooling pipe at both ends and is located outside the box; the condenser sub-tube is fixedly plugged into the condenser tube at one end; the heat sink is fixed on the condenser sub-tube; the cold air trough is opened under the cooling pipe.

6. The active ventilation sheet metal box according to claim 5, characterized in that: The cooling element further comprises: The condensing ring is fixed on the condensing tube; the spring ring seat is fixed on the condensing tube; the floating spring is fixed on the spring ring seat and is located between the condensing ring and the spring ring seat; the liquid valve ball is fixed on the floating spring.

7. The active ventilation sheet metal box according to claim 1, characterized in that: Also includes: The heat dissipation mesh plate is fixed in the shielding cover; the heat dissipation motor is fixed in the shielding cover; the heat dissipation fan blades are fixed on the heat dissipation motor; the foot block is fixed under the box body; and the box door plate is rotated on the box body.

Images