A staged cooling and energy-saving air conditioning ventilation system for ultra-large span workshops

Abstract

The application discloses to the technical field of workshop ventilation, and particularly relates to a hierarchical cooling energy-saving air conditioning air exchange system for super-large-span workshops, which comprises a ground air exchange system, is laid on the ground, and can perform air exchange operation on the air at the bottom of the workshop; meanwhile, the airflow at the bottom of the workshop presents Y-shaped vortex airflow, which accelerates the flow of the air at the bottom; and a support assembly is installed on the roof of the workshop and can install and place the device. The application can accelerate the flow of the air in the transverse area of the super-large-span workshop, realize hierarchical cooling, and thus improve the air in the workshop; and the hot air in the air in the workshop before air exchange and cooling can be quickly discharged, so that the air in the workshop can be kept in cold air circulation.

Description

Technical Field

[0001] This invention relates to the field of workshop ventilation technology, specifically to a graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops. Background Technology

[0002] Workshop ventilation and cooling systems can effectively improve the high temperature and stuffiness in workshops. These systems are characterized by low investment and low operating costs, and they are effective in workshop production. Currently, negative pressure ventilation and cooling systems are the main type used. They utilize the principles of negative pressure air exchange and air convection cooling to quickly and forcefully exhaust the hot and stuffy indoor air to the outside, while simultaneously introducing fresh and cool outdoor air into the room for convection exchange, forming a continuous and stable cooling cycle, thereby achieving the purpose of cooling.

[0003] With existing technology, air convection is achieved through windows on both sides of the workshop. Negative pressure equipment generates negative pressure on one side of the workshop, and air flows out of the windows on the other side under the action of negative pressure, thereby removing heat from the workshop. However, for workshops with ultra-large spans, the areas of each process in large workshops are relatively separated, and the complex building structure of the workshop hinders air flow, making it difficult to circulate air throughout the workshop. Moreover, due to the large span of the workshop, the temperature inside the workshop cannot be cooled down quickly.

[0004] To address this, we propose a graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops. Summary of the Invention

[0005] In view of the problems existing in the above and / or existing graded cooling energy-saving air conditioning ventilation system for ultra-large span workshops, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops. By using the accelerated ventilation device first and in conjunction with the top ventilation component, the hot air in the workshop air before ventilation and cooling can be quickly discharged. The system achieves graded cooling through the middle ventilation system, the middle ventilation system and the ground ventilation system, thus solving the aforementioned existing problems.

[0007] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A staged cooling and energy-saving air conditioning ventilation system for ultra-large span workshops, comprising:

[0009] The ground ventilation system is laid on the ground and can exchange the air at the bottom of the workshop. At the same time, the airflow at the bottom of the workshop presents a Y-shaped vortex airflow, which accelerates the flow of air at the bottom.

[0010] The support frame assembly is installed on the roof of the workshop and is capable of installing and placing the equipment.

[0011] The top ventilation unit is installed on top of the support assembly and extends through the horizontal area of ​​the workshop roof. The top ventilation unit can drive the top air to be quickly output to both ends of the workshop, thereby driving the air to flow quickly and realizing rapid ventilation in the workshop.

[0012] The central ventilation system is installed on the lower surface of the support assembly. It can exchange the air in the upper part of the workshop. At the same time, the air in the upper part of the workshop presents a vortex-shaped airflow, which drives the hot air in the lower part of the workshop to rise rapidly to the upper part and is absorbed by the central ventilation system, thereby accelerating the flow of hot air in the workshop and achieving rapid ventilation of hot air.

[0013] The accelerated ventilation device is located in the middle of the support assembly and is in contact with the middle ventilation system to realize the ventilation function of the middle ventilation system. In addition, through the cooperation of the accelerated ventilation device and the top ventilation assembly, the vortex flow of the upper air can be accelerated, so that the hot air rises rapidly and is drawn into the top ventilation assembly, while the hot air is quickly discharged.

[0014] As a preferred embodiment of the graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops described in this invention, the ground ventilation system includes:

[0015] Floor tiles, which, in conjunction with the ground-level air outlet and air inlet boxes, are laid on the workshop floor;

[0016] The ground-level air outlet box is laid in conjunction with the floor tiles and is laid vertically. Together with the floor tiles and the ground-level air inlet box, it forms multiple square areas, which divide the workshop area into horizontal zones. The ground-level air outlet box can exhaust outdoor air and make the exhaust airflow present a Y-shaped airflow.

[0017] The ground air intake box is laid in conjunction with the floor tiles and is laid horizontally. It can draw in air from the bottom of the workshop and remove dust from the bottom. At the same time, it can also absorb the airflow discharged from the ground air outlet box, confining the airflow discharged from the ground air outlet box to the area where the floor tiles are laid.

[0018] The ground ventilation fan is installed outside the workshop and connected to the ground air outlet box and the ground air inlet box. The ground ventilation fan can draw in indoor air through the ground air inlet box and filter outdoor air and discharge it into the room through the ground air outlet box.

[0019] As a preferred embodiment of the graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops described in this invention, the support assembly includes:

[0020] The support frame, whose top is connected to the interior roof of the workshop by expansion bolts;

[0021] The hollowed-out grooves are located at both ends of the top of the bracket and can cooperate with the top ventilation component to allow the top ventilation component to draw in air from the bottom.

[0022] The placement frame is located at the lower end of the bracket and allows for the installation and placement of the central ventilation system.

[0023] As a preferred embodiment of the graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops described in this invention, the top ventilation assembly includes:

[0024] The air exchange box is installed at both ends of the top of the bracket, with the input end and the hollow slot on the same vertical plane;

[0025] The exhaust fans are installed at both ends inside the air exchange box, and the output ends of both sets of exhaust fans face the outside of the workshop. The exhaust fans can quickly exhaust the air in the air exchange box.

[0026] An intake fan is installed at the bottom of the air exchange box, with its input end facing the inside of the air exchange box. The intake fan can quickly draw in air from the bottom.

[0027] As a preferred embodiment of the graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops described in this invention, the central ventilation system includes:

[0028] The central air exchanger is installed at both ends of the top of the bracket and is connected to the central air inlet box and the central air outlet assembly;

[0029] The central air intake box is installed at both ends of the inner wall of the frame and can draw in air from the lower part.

[0030] The blocking components are installed at both ends inside the placement frame, and the blocking components cooperate with the central air outlet components to block the air outlet of the central air outlet components;

[0031] The central air outlet assembly is installed inside the barrier assembly. It can vortex-shaped airflow from the upper part of the workshop and discharge it downwards, thereby achieving the sinking of cold air and the rising of hot air.

[0032] As a preferred embodiment of the graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops described in this invention, the blocking component includes:

[0033] A blocking frame, which is installed at both ends inside the placement frame;

[0034] The blocking groove is set around the inner wall of the blocking frame and divided by the limiting block. It can make close contact with the output end of the central air outlet component to block the air blowing of the central air outlet component.

[0035] The limiting block is set around the inner wall of the blocking frame, and the limiting block can limit and support the installation of the central air outlet component.

[0036] The limiting groove is located at both ends of the surface of the limiting block.

[0037] As a preferred embodiment of the graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops described in this invention, the central air outlet component includes:

[0038] The central air outlet box is installed inside the baffle frame and is blocked and supported by the limiting block. The inlet end of the central air outlet box passes through the baffle frame and is connected to the outlet end of the central air exchanger.

[0039] The central air outlet is located at the lower end of the inner wall of the central air outlet box and can discharge the exhaust air in an arc shape.

[0040] The return spring has its top connected to both ends of the bottom of the middle air outlet box and its bottom connected to the inside of the limiting groove. The return spring can set the blocking state of the middle air outlet box in contact with the blocking groove to the initial state.

[0041] As a preferred embodiment of the graded cooling and energy-saving air conditioning ventilation system for ultra-large span workshops described in this invention, the accelerated ventilation device includes:

[0042] A rotary motor is mounted on both ends of the surface of the bracket;

[0043] The limit rod is installed at both ends of the bottom of the bracket and connected to the output end of the rotary motor at the top. The rotary motor can drive the limit rod to rotate.

[0044] The telescopic rod has one end connected to the outer wall of the limit rod and the output end connected to the outer wall of the piston block. The telescopic rod can drive the piston block to move up and down.

[0045] The piston block is slidably connected to the outer wall of the limiting rod and can be driven to rise and fall by the telescopic rod.

[0046] The connecting rod has one end rotatably connected to the lower end of the outer wall of the limiting rod, and the other end rotatably connected to the port connecting the first fan blade and the second fan blade.

[0047] The first blade, which is rotatably connected to the second blade, is located around the outer periphery of the lower end of the limiting rod;

[0048] The pull rod has one end rotatably connected to the port connecting the first and second fan blades, and the other end rotatably connected to the outer wall of the piston block. Through the sliding of the piston block, it can drive the first and second fan blades to fold into a W shape.

[0049] Compared with existing technologies:

[0050] By using the combined use of the ground ventilation system, the top ventilation components and the middle ventilation system, the area of ​​the ultra-large span workshop can be divided horizontally, and the air in the horizontally divided area can be flowed in stages from the ground to the top. This can accelerate the air flow in the horizontal area of ​​the ultra-large span workshop, achieve staged cooling, and thus improve the air in the workshop.

[0051] By using the accelerated ventilation device first, and in conjunction with the top ventilation components, the hot air in the workshop air before the ventilation and cooling can be quickly discharged, thereby ensuring that the air in the workshop remains in cold air circulation. At the same time, after the accelerated ventilation device stops rotating, it works with the central ventilation system to activate the ventilation function of the central ventilation system, thereby enabling the central ventilation system, the central ventilation system and the ground ventilation system to perform staged cooling. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0053] Figure 2 This is a schematic diagram of the overall placement structure provided by the present invention;

[0054] Figure 3 This is a schematic diagram of the ground ventilation system provided by the present invention;

[0055] Figure 4 This is a schematic diagram of the internal structure of the ground ventilation system provided by the present invention;

[0056] Figure 5 This is a schematic diagram of the connection structure of the bracket assembly provided by the present invention;

[0057] Figure 6 This is a bottom view of the support assembly connection structure provided by the present invention;

[0058] Figure 7 A schematic diagram of the top ventilation assembly structure provided by the present invention;

[0059] Figure 8 This is a schematic diagram of the support assembly structure provided by the present invention;

[0060] Figure 9 This is a schematic diagram of the disassembled structure of the central ventilation system provided by the present invention;

[0061] Figure 10 This is a schematic diagram of the blocking component structure provided by the present invention;

[0062] Figure 11 This is a schematic diagram of the central air outlet component structure provided by the present invention;

[0063] Figure 12 This is a schematic diagram of the accelerated air exchange device provided by the present invention.

[0064] In the diagram: 1. Ground ventilation system; 11. Floor tile; 12. Ground air outlet box; 13. Ground air inlet box; 14. Ground ventilation fan; 2. Support assembly; 21. Support; 22. Hollow groove; 23. Placement frame; 3. Top ventilation assembly; 3. Ventilation box; 31. Air outlet fan; 32. Air inlet fan; 33. Middle ventilation system; 4. Middle ventilation fan; 41. Middle air inlet box; 42. Blocking assembly; 43. Blocking frame; 431. Blocking groove; 432. Limiting block; 433. Limiting groove; 434. Middle air outlet assembly; 44. Middle air outlet box; 441. Middle air outlet; 442. Return spring; 443. Accelerating ventilation device; 5. Rotary motor; 51. Limiting rod; 52. Telescopic rod; 53. Piston block; 54. Connecting rod; 55. First fan blade; 56. Second fan blade; 57. Pulling rod; 58. Detailed Implementation

[0065] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0066] This invention provides a staged cooling and energy-saving air conditioning ventilation system for ultra-large span workshops. It features accelerated airflow within the lateral area of ​​the workshop, achieving staged cooling and improving indoor air quality. Furthermore, it rapidly removes hot air from the workshop before cooling, ensuring a continuous circulation of cool air within the workshop. Please refer to [link to relevant documentation]. Figure 1-12 It includes a ground ventilation system 1, a support assembly 2, a top ventilation assembly 3, a middle ventilation system 4, and an accelerated ventilation device 5;

[0067] The floor ventilation system 1 is laid on the ground and can exchange air at the bottom of the workshop. Simultaneously, the airflow at the bottom of the workshop presents a Y-shaped vortex airflow, accelerating the airflow at the bottom. The floor ventilation system 1 includes: floor tiles 11, floor outlet boxes 12, floor inlet boxes 13, and floor ventilation fans 14. The floor tiles 11, together with the floor outlet boxes 12 and floor inlet boxes 13, are all laid on the workshop floor. The floor outlet boxes 12, together with the floor tiles 11, are laid vertically, forming multiple sets of square areas with the floor tiles 11 and floor inlet boxes 13, horizontally dividing the workshop area. The floor outlet boxes 12 can exhaust outdoor air and ensure that the exhausted air... The airflow presents a Y-shaped airflow pattern. The ground air inlet box 13 is laid in conjunction with the floor tiles 11 and is laid horizontally. The ground air inlet box 13 can draw in air from the bottom of the workshop and absorb dust from the bottom. At the same time, the ground air inlet box 13 can absorb the airflow discharged from the ground air outlet box 12, so that the airflow discharged from the ground air outlet box 12 is confined to the area paved with floor tiles 11. The ground ventilation fan 14 is set outside the workshop and is connected to the ground air outlet box 12 and the ground air inlet box 13. The ground ventilation fan 14 can draw in indoor air through the ground air inlet box 13 and filter outdoor air and discharge it into the room through the ground air outlet box 12.

[0068] The support assembly 2 is installed on the roof of the workshop and can install and place the device. The support assembly 2 includes: a support 21, a hollow groove 22 and a placement frame 23. The top of the support 21 is connected to the indoor roof of the workshop by expansion bolts. The hollow groove 22 is set at both ends of the top of the support 21 and can cooperate with the top ventilation assembly 3 to allow the top ventilation assembly 3 to draw in air from the bottom. The placement frame 23 is set at the bottom of the support 21 and can install and place the middle ventilation system 4.

[0069] The support components 2 are horizontally spliced ​​together as a group and installed horizontally on the roof of the workshop. Based on the installation area of ​​the horizontal support components 2, the area of ​​the ultra-large span workshop is horizontally divided into multiple groups of areas.

[0070] The top ventilation assembly 3 is installed on the top of the support assembly 2 and extends through the horizontal area of ​​the workshop roof. The top ventilation assembly 3 can drive the top air to be quickly output to both ends of the workshop, thereby driving the air to flow quickly and realizing rapid ventilation in the workshop. The top ventilation assembly 3 includes: ventilation box 31, exhaust fan 32 and intake fan 33. The ventilation box 31 is installed at both ends of the top of the support 21, and the input end is on the same vertical plane as the hollow groove 22. The exhaust fan 32 is installed at both ends inside the ventilation box 31, and the output ends of both sets of exhaust fans 32 face the outside of the workshop. The exhaust fan 32 can quickly exhaust the air in the ventilation box 31. The intake fan 33 is installed at the bottom of the ventilation box 31, and the input end of the intake fan 33 faces the inside of the ventilation box 31. The intake fan 33 can quickly draw in the air at the bottom.

[0071] The air exchange boxes 31 are configured in several groups and installed horizontally on the top of the workshop, running through both ends of the horizontal workshop. The air outlet fans 32 in the air exchange boxes 31 at both ends of the workshop face the nearest outside of the workshop, while the air outlet fans 32 in the air exchange box 31 in the middle of the workshop face the air exchange boxes 31 at both ends. The air drawn in can be discharged to both ends through the air exchange box 31 in the middle, and is discharged to the outside of the workshop in conjunction with the air exchange boxes 31 at both ends.

[0072] The central ventilation system 4 is installed on the lower surface of the support assembly 2. It facilitates air exchange in the upper part of the workshop, creating a vortex-like airflow that draws hot air from the lower part of the workshop upwards. This hot air is then absorbed by the central ventilation system 4, accelerating the flow of hot air and achieving rapid air exchange. The central ventilation system 4 includes: a central ventilation fan 41, a central air inlet box 42, a baffle assembly 43, a baffle frame 431, a baffle groove 432, a limiting block 433, a limiting groove 434, a central air outlet assembly 44, a central air outlet box 441, and a central... The air outlet 442 and return spring 443, the middle air exchanger 41, which is installed at both ends of the top of the bracket 21 and connected to the middle air inlet box 42 and the middle air outlet assembly 44, the middle air inlet box 42, which is installed at both ends of the inner wall of the placement frame 23 and can draw in air from the lower end, the blocking assembly 43, which is installed at both ends of the inside of the placement frame 23 and cooperates with the middle air outlet assembly 44 to block the air outlet of the middle air outlet assembly 44, the blocking frame 431, which is installed at both ends of the inside of the placement frame 23, and the blocking groove 432, which is set in the blocking frame 431. The inner wall is divided by limiting blocks 433, and the blocking grooves 432 can make close contact with the output end of the central air outlet component 44 to block the airflow from the central air outlet component 44. The limiting blocks 433 are set around the inner wall of the blocking frame 431, and can limit and support the installation of the central air outlet component 44. The limiting grooves 434 are set at both ends of the surface of the limiting blocks 433. The central air outlet component 44 is installed inside the blocking component 43, and can discharge the air from the upper part of the workshop in a vortex-like airflow downwards through the central air outlet component 44, thereby realizing the sinking of cold air and the discharge of hot air. As the air rises, the central air outlet box 441 is installed inside the blocking frame 431 and is blocked and supported by the limiting block 433. The inlet end of the central air outlet box 441 passes through the blocking frame 431 and is connected to the output end of the central air exchanger 41. The central air outlet 442 is located at the lower end of the inner wall of the central air outlet box 441 and can discharge the air in an arc. The top of the return spring 443 is connected to both ends of the bottom of the central air outlet box 441, and the bottom is connected to the inside of the limiting groove 434. The return spring 443 can set the blocking state of the central air outlet box 441 in contact with the blocking groove 432 to the initial state.

[0073] An accelerated ventilation device 5 is positioned in the middle of the support assembly 2 and contacts the central ventilation system 4 to enable ventilation of the central ventilation system 4. Through its cooperation with the top ventilation assembly 3, the accelerated ventilation device 5 accelerates the vortex flow of upper air, causing hot air to rise rapidly and be drawn in by the top ventilation assembly 3, while simultaneously expelling the hot air quickly. The accelerated ventilation device 5 includes: a rotary motor 51, a limiting rod 52, a telescopic rod 53, a piston block 54, a connecting rod 55, a first fan blade 56, a second fan blade 57, and a pulling rod 58. The rotary motor 51 is installed at both ends of the surface of the support 21. The limiting rod 52 is installed at both ends of the bottom of the support 21, with its top connected to the output end of the rotary motor 51. The rotary motor 51 drives the limiting rod 52 to rotate. The telescopic rod 53 is connected at one end to… The piston block 54 is connected to the outer wall of the limiting rod 52 at one end and to the outer wall of the piston block 54 at the other end. The piston block 54 can be driven to rise and fall by the telescopic rod 53. The connecting rod 55 has one end rotatably connected to the lower end of the outer wall of the limiting rod 52 and the other end rotatably connected to the port connecting the first fan blade 56 and the second fan blade 57. The first fan blade 56 and the second fan blade 57 are rotatably connected to each other and are set on the outer periphery of the lower end of the limiting rod 52. The pulling rod 58 has one end rotatably connected to the port connecting the first fan blade 56 and the second fan blade 57 and the other end rotatably connected to the outer wall of the piston block 54. The piston block 54 can be driven to fold the first fan blade 56 and the second fan blade 57 into a W shape by sliding the piston block 54.

[0074] In practical use, those skilled in the art will first start the accelerated ventilation device 5, causing the rotary motor 51 to rotate the limiting rod 52, thereby causing the first fan blade 56 and the second fan blade 57, folded into a W shape, to agitate the air at the lower end. At the same time, in conjunction with the ground air outlet box 12 of the ground ventilation system 1, cold air is discharged, thereby compressing the hot air with the cold air, causing the hot air to rise. At the same time, it is agitated by the first fan blade 56 and the second fan blade 57. When it passes through the middle air inlet box 42, the external airflow of the vortex-shaped hot air flow is drawn in, and the internal hot air flow flows rapidly upward. It is drawn in by the air inlet fan 33, causing the hot air to enter the interior of the ventilation box 31, and is quickly discharged by the air outlet fan 32. After the hot air in the workshop is discharged, the start of the rotary motor 51 is stopped, and the telescopic rod 53 is started, driving... The piston block 54 moves downward, causing the piston block 54 to push the folded first fan blade 56 and second fan blade 57 into a planar state. This causes the first fan blade 56 and second fan blade 57 to compress the central air outlet box 441 from all sides, and causes the central air outlet 442 of the central air outlet box 441 to disengage from the blocking groove 432. This causes the central air outlet box 441 to discharge the cold air in a vortex shape. At this time, the hot air is compressed and sucked in by the central air inlet box 42. Meanwhile, the first fan blade 56 and second fan blade 57 block the upper air, reducing the space for cold air to enter. In conjunction with the ground ventilation system 1, the ground air outlet box 12 discharges the cold air in a Y-shape, causing the hot air to be compressed and flow upward. The hot air compressed by the cold air is sucked in by the ground air inlet box 13, thereby achieving graded cooling in the workshop.

[0075] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A staged cooling and energy-saving air conditioning ventilation system for ultra-large span workshops, characterized in that: The application relates to a ground air exchange system (1) which is laid on the ground and can perform air exchange operation on the air at the bottom of a workshop, and the air flow at the bottom of the workshop presents Y-shaped vortex air flow to accelerate the flow of the air at the bottom; a support assembly (2) which is installed on the roof of the workshop and can install and place the device; a top air exchange assembly (3) which is installed on the top of the support assembly (2) and penetrates the transverse area of the roof of the workshop, and the top air exchange assembly (3) can drive the air at the top to be quickly output to the two ends outside the workshop, so that the air flows quickly, and the air in the workshop is quickly exchanged; a middle air exchange system (4) which is installed on the lower end surface of the support assembly (2), and the middle air exchange system (4) can perform air exchange operation on the air at the top of the workshop, and the air at the top of the workshop presents vortex air flow to drive the hot air at the bottom of the workshop to quickly rise to the upper end and be sucked by the middle air exchange system (4), so that the hot air flow at the bottom of the workshop is accelerated and quickly exchanged; and an acceleration air exchange device (5) which is arranged at the middle position of the support assembly (2) and is in contact with the middle air exchange system (4), so that the air exchange function of the middle air exchange system (4) is realized, and the acceleration air exchange device (5) cooperates with the top air exchange assembly (3) to accelerate the vortex flow of the air at the top, so that the hot air quickly rises and is sucked by the top air exchange assembly (3) while being quickly discharged. The ground air exchange system (1) comprises: ground bricks (11) which cooperate with ground air outlet boxes (12) and ground air inlet boxes (13) and are laid on the ground of the workshop; the ground air outlet boxes (12) are laid in cooperation with the ground bricks (11) and are vertically laid, present multiple groups of square areas with the ground bricks (11) and the ground air inlet boxes (13), divide the horizontal area of the workshop area, and can discharge outdoor air through the ground air outlet boxes (12) and make the discharged air flow present Y-shaped air flow; the ground air inlet boxes (13) are laid in cooperation with the ground bricks (11) and are horizontally laid, can suck the air at the bottom of the workshop through the ground air inlet boxes (13) and suck the dust at the bottom, and can adsorb the air flow discharged by the ground air outlet boxes (12) through the ground air inlet boxes (13), so that the air flow discharged by the ground air outlet boxes (12) is limited in the laying area of the ground bricks (11); and ground air exchange machines (14) which are arranged outside the workshop and are connected with the ground air outlet boxes (12) and the ground air inlet boxes (13), and can suck indoor air through the ground air inlet boxes (13) and filter outdoor air and discharge the filtered outdoor air into the indoor through the ground air outlet boxes (12). The support assembly (2) comprises: a support (21) which is connected with the indoor roof of the workshop through expansion bolts at the top; and hollow grooves (22) which are arranged at the two ends of the top of the support (21) and can cooperate with the top air exchange assembly (3), so that the top air exchange assembly (3) can suck the air at the lower end. ​ ​ ​ 2. The energy-saving air conditioning air exchange system with step cooling for super-long-span workshop according to claim 1, characterized in that, ​ ​ ​ ​ ​ 3. The energy-saving air conditioning air exchange system with step cooling for super-long-span workshop according to claim 1, characterized in that, ​ ​ ​ The placing frame (23) is arranged at the lower end of the support (21), and the central air exchange system (4) can be installed and placed through the placing frame (23).

4. The energy-saving air conditioning air exchange system with step cooling for super-long-span workshop according to claim 1, characterized in that, The top air exchange assembly (3) comprises: The air exchange box (31) is installed at the top of the support (21) and makes the input end in the same vertical plane as the hollow groove (22); The air outlet fan (32) is installed at the two ends of the inside of the air exchange box (31), and the output ends of the two groups of air outlet fans (32) are both directed to the outdoor of the workshop, and the air in the air exchange box (31) can be quickly discharged through the air outlet fan (32); The air inlet fan (33) is installed at the bottom of the air exchange box (31), and the input end of the air inlet fan (33) is directed to the inside of the air exchange box (31), and the air at the lower end can be quickly sucked through the air inlet fan (33).

5. The energy-saving air conditioning air exchange system with step cooling for super-long-span workshop according to claim 1, characterized in that, The central air exchange system (4) comprises: The central air exchange fan (41) is installed at the top of the support (21) and connected with the central air inlet box (42) and the central air outlet assembly (44); The central air inlet box (42) is installed at the inner wall of the placing frame (23), and the air at the lower end can be sucked through the central air inlet box (42); The blocking assembly (43) is installed at the two ends of the inside of the placing frame (23), and the blocking assembly (43) cooperates with the central air outlet assembly (44) to block the air outlet of the central air outlet assembly (44); The central air outlet assembly (44) is installed in the inside of the blocking assembly (43), and the air at the upper end of the workshop can be discharged in a vortex flow downward through the central air outlet assembly (44), so as to realize the sinking of cold air and the rising of hot air.

6. The energy-saving air conditioning air exchange system with step cooling for super-long-span workshop according to claim 5, characterized in that, The blocking assembly (43) comprises: The blocking frame (431) is installed at the two ends of the inside of the placing frame (23); The blocking groove (432) is arranged around the inner wall of the blocking frame (431) and is divided by the limiting block (433), and the output end of the central air outlet assembly (44) can be in close contact with the blocking groove (432) to block the air blowing of the central air outlet assembly (44); The limiting block (433) is arranged around the inner wall of the blocking frame (431), and the installation of the central air outlet assembly (44) can be limited and supported through the limiting block (433); The limiting groove (434) is arranged at the two ends of the surface of the limiting block (433).

7. The energy-saving air conditioning air exchange system with step cooling for super-long-span workshop according to claim 5, characterized in that, The central air outlet assembly (44) comprises: The central air outlet box (441) is installed in the inside of the blocking frame (431) and is blocked and supported by the limiting block (433), and the access end of the central air outlet box (441) penetrates the blocking frame (431) and is connected with the output end of the central air exchange fan (41); The central air outlet (442) is arranged at the lower end of the inner wall of the central air outlet box (441), and the discharged air can be discharged in an arc shape. A reset spring (443) is connected at the top of the middle air outlet box (441) at both ends of the bottom, connected to the inside of the limiting groove (434), and the middle air outlet box (441) can be set to the initial state by the reset spring (443) in contact with the blocking groove (432) in the blocking state.

8. The energy-saving air conditioning air exchange system with step cooling for super-long-span workshop according to claim 1, characterized in that, The acceleration air exchange device (5) comprises: A rotary motor (51) is installed at both ends of the surface of the support (21); A limiting rod (52) is installed at both ends of the bottom of the support (21), and the top is connected to the output end of the rotary motor (51), and the limiting rod (52) can be driven to rotate by the rotary motor (51); A telescopic rod (53) is connected at one end of the outer wall of the limiting rod (52), and the output end is connected to the outer wall of the piston block (54), and the piston block (54) can be driven to rise and fall by the telescopic rod (53); A piston block (54) is slidingly connected to the outer wall of the limiting rod (52) and can be driven to rise and fall by the telescopic rod (53); A connecting rod (55) is rotatably connected at one end to the outer wall of the limiting rod (52) at the lower end, and rotatably connected at the other end to the connecting port between the first fan blade (56) and the second fan blade (57); The first fan blade (56) is rotatably connected with the second fan blade (57), and is arranged outside the lower end of the limiting rod (52); A pulling rod (58) is rotatably connected at one end to the connecting port between the first fan blade (56) and the second fan blade (57), and rotatably connected at the other end to the outer wall of the piston block (54), and by sliding the piston block (54), the first fan blade (56) and the second fan blade (57) can be driven to fold and present a W shape.

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