Energy-saving central air conditioner ventilation structure

Abstract

The invention relates to the technical field of central air conditioner ventilation, and discloses an energy-saving central air conditioner ventilation structure which comprises ventilation pipes installed at the bottom of a ventilation pipeline at equal intervals, air guide pipes are fixed in the ventilation pipes through filter assemblies, and a bottom air outlet assembly is fixed to the bottom of a rotating shaft after the bottom of the rotating shaft extends out of the air guide pipes. The modular design is adopted, the installation process of all the components is relatively simple, positioning is accurate, the installation difficulty and the installation error are reduced, and the installation efficiency is improved. Due to the fact that the connection mode of all the components is relatively simple and the components are detachable, the components can be rapidly detached for maintenance or replacement, and maintenance time and cost are reduced. The air inlet amount can be adjusted without an additional power executing mechanism, the whole adjusting process gradually reaches a dynamic balance state, and the air filtering effect of the annular filter element is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of central air-conditioning ventilation, in particular to an energy-saving central air-conditioning ventilation structure. Background Art

[0002] Central air conditioning and ventilation systems, core equipment for maintaining a comfortable indoor environment in modern buildings, are widely used in commercial buildings, offices, large venues, and residences. As people's pursuit of a healthy and comfortable indoor environment continues to increase, the limitations of central air conditioning and ventilation systems are becoming increasingly prominent.

[0003] Traditional designs have numerous shortcomings in terms of air conditioning and ventilation efficiency. Duct layout and structural design often result in excessive wind resistance. If the central air conditioner's fan fails to achieve the desired ventilation effect after delivering air, complex and energy-intensive power actuators, such as electric control valves and variable-frequency fans, are often required at the air outlet. These devices not only increase the system's initial investment cost but also consume electricity during operation, failing to achieve energy savings.

[0004] From an air filtration perspective, the filtration devices in traditional central air conditioning ventilation systems struggle to achieve optimal filtration performance due to varying wind speeds, resulting in varying amounts of time for air to pass through the filters. Furthermore, the overall design of central air conditioning ventilation systems is complex, making it difficult to disassemble individual components and hindering subsequent maintenance and repair. To address this, we have developed an energy-saving central air conditioning ventilation system. Summary of the Invention

[0005] The purpose of the present invention is to provide an energy-saving central air-conditioning ventilation structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an energy-saving central air conditioning ventilation structure, comprising ventilation pipes installed at equal intervals at the bottom of the ventilation duct, an air guide pipe fixed to the interior of the ventilation pipe using a filter assembly, a rotating shaft passing through the middle of the air guide pipe, the top of the rotating shaft extending out of the air guide pipe and connected to a top blade via a turntable; A bottom air outlet assembly is fixed to the bottom of the rotating shaft after extending out of the air guide pipe. A plurality of groups of middle fan assemblies driven by the bottom air outlet assembly are evenly distributed at the bottom of the filter assembly. The bottom air outlet assembly is connected to a bottom blade. A rubber windward cover is fixed on the outer side of the top of the turntable, and a plurality of groups of abutment components distributed at equal intervals and a group of annular expansion air bags located on the outer side of the bottom of the abutment components are provided on the inner side of the top of the turntable; A fling block air compressor assembly is symmetrically provided on the top of the bottom air outlet assembly, and the fling block air compressor assembly is connected to the annular expansion air bag through a channel system on the rotating shaft; The top blade drives the bottom air outlet assembly to rotate through the rotating shaft under the action of the incoming air at the top of the ventilation duct. The incoming air at the top of the ventilation duct is accelerated through the air guide duct and then filtered through the filter assembly. The bottom air outlet assembly drives the middle fan assembly to accelerate the outgoing air passing through the filter assembly, and finally the range of the air outlet through the bottom of the ventilation duct is expanded through the bottom blade.

[0007] Preferably, the ventilation duct includes an outer trumpet tube connected between the air inlet duct and the air outlet duct, the diameter of the outer trumpet tube gradually decreases from top to bottom, and a flange fixed to the bottom of the ventilation duct is provided on the outer side of the top of the air inlet duct.

[0008] Preferably, the filter assembly includes an outer protective tube inserted into the bottom of the ventilation pipe, an inner protective tube assembly located inside the outer protective tube, and an annular filter element fixed to the outside of the inner protective tube assembly and the inside of the outer protective tube. An annular support frame supported on the bottom of the annular filter element is also provided between the outside of the inner protective tube assembly and the inside of the outer protective tube.

[0009] Preferably, the inner protective tube assembly includes a top inner protective tube, a bottom inner protective tube, and a bottom inner bell tube connected between the top inner protective tube and the bottom inner protective tube, and the diameter of the bottom inner bell tube gradually decreases from top to bottom; A plurality of groups of support blocks are provided at equal intervals on the outer side of the top of the top inner protective tube, and the support blocks are supported on the inner wall of the outer protective tube.

[0010] Preferably, the air guide tube includes a sleeve seat sleeved on the outside of the rotating shaft, a support tube located outside the sleeve seat, and a top inner trumpet tube connected between the top of the sleeve seat and the top of the support tube, and the diameter of the top inner trumpet tube gradually decreases from top to bottom; The support tube is inserted into the inner side of the top of the inner protective tube assembly.

[0011] Preferably, the bottom air outlet assembly includes a bottom fixed plate, an inner gear ring fixed to the top of the outer side of the bottom fixed plate by a connecting frame, and a connecting cylinder centrally arranged on the top of the bottom fixed plate; The connecting cylinder is sleeved on the outside of the bottom of the rotating shaft, and the bottom fixing plate is fixed to the bottom of the rotating shaft by bolts; The bottom blades are fixed on the outer wall of the bottom fixed disk at equal intervals.

[0012] Preferably, the middle fan assembly includes a connecting seat fixed at equal intervals on the outer inner wall of the bottom of the filter assembly, a rotating rod passing through the connecting seat, a middle fan fixed on the top of the rotating rod, and a gear fixed on the bottom of the rotating rod, and the gear is engaged with the inner wall of the inner gear ring.

[0013] Preferably, the abutment assembly comprises an arc-shaped seat fixed at equal intervals on the top of the turntable, a convex plate provided on the inner side of the top of the arc-shaped seat, and an abutment arm movably connected to the convex plate by a pin; The top of the supporting arm is provided with an arc plate, which is fixed to the inner wall of the rubber windward cover. The annular expansion airbag is fixed to the inner wall of the bottom of several groups of arc seats. The bottom of the supporting arm is provided with a driving plate, which is fixed to the inner wall of the annular expansion airbag.

[0014] Preferably, the channel system includes a vent pipe connected to the inner wall of the annular expansion airbag, a vent channel provided inside the rotating shaft, and air inlet grooves evenly spaced on the sides of the bottom of the rotating shaft; The vent pipe is communicated with the air intake groove through the vent channel.

[0015] Preferably, the said throwing block air-compressing assembly comprises a throwing block seat fixed on the bottom air outlet assembly, a throwing block arranged inside the throwing block seat, and a cylinder body; The side of the swing block is provided with a slider, which is slidably connected to the slide groove on the side of the swing block seat. The cylinder is fixed to the outside of the swing block seat. The middle part of the outer side of the swing block is connected to a piston through a piston rod, and the piston is located in the cylinder; An air guide pipe is also provided on the outside of the cylinder body, and the other end of the air guide pipe is communicated with the ventilation channel through the air intake groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts a modular design, the installation process between the components is relatively simple, the positioning is accurate, the installation difficulty and installation error are reduced, and the installation efficiency is improved.

[0017] Because the connections between the various components are relatively simple and removable, if a component fails or needs to be replaced, it can be quickly removed for repair or replacement, eliminating the need for extensive disassembly of the entire ventilation structure, reducing maintenance time and costs. For example, if the annular filter element needs to be replaced after a period of use, the filter assembly can be easily removed for replacement.

[0018] The present invention can adjust the air intake volume without using an additional power actuator. Such a design has certain energy-saving properties, and the entire adjustment process gradually reaches a dynamic equilibrium state, ensuring the filtering effect of the annular filter element on the wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of the present invention and the ventilation duct installation; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the decomposed structure of the present invention as a whole; Figure 4 For the present invention Figure 2 Schematic diagram of the three-dimensional structure from another perspective; Figure 5 Schematic diagram of the decomposition structure of the filter assembly of the present invention; Figure 6For the present invention Figure 5 A in the middle is an enlarged structural diagram; Figure 7 This is a schematic diagram of the structure of the connection seat and the outer protective tube of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the filter assembly of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the cross-section structure at the middle BB; Figure 10 Schematic diagram of the structure of the air duct of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the bottom air outlet assembly of the present invention; Figure 12 This is a structural diagram of the connection between the bottom air outlet assembly and the block compression assembly of the present invention; Figure 13 This is a schematic diagram of the structure of the connection between the rubber windward cover, the top blade and the rotating shaft of the present invention; Figure 14 For the present invention Figure 13 Schematic diagram of the cross-section structure at CC in the middle; Figure 15 This is a schematic structural diagram of the connection of the abutting components of the present invention; Figure 16 This is a structural diagram of the connection between the rotating shaft and the bottom air outlet assembly of the present invention; Figure 17 This is a schematic cross-sectional view of the overall structure of the curved plate of the present invention when it is in a closed state; Figure 18 It is a schematic diagram of the overall cross-sectional structure of the curved plate of the present invention when it is in an open state.

[0020] In the figure: 1. Ventilation duct; 2. Ventilation duct; 201. Flange; 202. Air inlet duct; 203. Outer horn; 204. Air outlet duct; 3. Rubber windward cover; 4. Top blade; 5. Bottom air outlet assembly; 501. Bottom fixing plate; 502. Bolt; 503. Inner gear ring; 504. Connecting frame; 505. Bottom blade; 506. Connecting cylinder; 5061. Annular groove; 6. Gear; 7. Annular filter element; 8. Inner protective tube assembly; 801. Bottom inner horn; 802. Bottom inner protective tube; 803. Top inner protective tube; 804. Support block; 9. Air guide duct ;91. Support tube;92. Top inner trumpet;93. Sleeve seat;10. Annular support frame;11. Outer protective tube;12. Connecting seat;13. Turning rod;14. Middle fan;15. Throwing block seat;16. Rotating shaft;161. Turntable;162. Air intake groove;163. Ventilation channel;164. Ventilation pipe;165. Arc seat;17. Cylinder body;18. Throwing block;19. Air guide pipe;20. Piston rod;21. Slider;22. Slide groove;23. Piston;24. Annular expansion airbag;25. Pin shaft;26. Convex plate;27. Arc plate;28. Drive plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example: See also Figure 1-18 , the present invention provides a technical solution: An energy-saving central air-conditioning ventilation structure includes ventilation pipes 2 installed at equal intervals at the bottom of a ventilation duct 1. The ventilation duct 1 is fixed to the indoor ceiling. One end of the ventilation duct 1 is connected to the air outlet of the energy-saving central air-conditioning. The bottom of the ventilation duct 2 is flush with the ceiling of the indoor ceiling. In this way, when the energy-saving central air-conditioning is working, the wind it generates can enter the ventilation duct 2 through the ventilation duct 1 and then blow into the room through the bottom of the ventilation duct 2.

[0023] The ventilation pipe 2 includes an outer bell pipe 203 connected between the air inlet pipe 202 and the air outlet pipe 204. A flange 201 fixed to the bottom of the ventilation duct 1 is provided on the outer side of the top of the air inlet pipe 202.

[0024] The diameter of the outer bell tube 203 gradually decreases from top to bottom, and the diameter of the top inner bell tube 92 gradually decreases from top to bottom (as shown in FIG. Figure 17 and 18As shown), this arrangement allows the wind entering the ventilation duct 2 to be accelerated after passing between the outer trumpet tube 203 and the top inner trumpet tube 92. The air guide duct 9 and the ventilation duct 2 cooperate to increase the speed of the wind passing through the annular filter element 7, thereby achieving rapid filtration of the wind by the annular filter element 7.

[0025] The interior of the ventilation pipe 2 is fixed with an air guide pipe 9 by using a filter assembly. Figure 10 As shown, the air duct 9 includes a sleeve seat 93 sleeved on the outside of the rotating shaft 16, a support tube 91 located outside the sleeve seat 93, and a top inner horn tube 92 connected between the top of the sleeve seat 93 and the top of the support tube 91; The support tube 91 is inserted into the top inner side of the inner protective tube assembly 8, that is, the support tube 91 is inserted into the interior of the top inner protective tube 803, so that the air guide tube 9 is fixed centrally inside the ventilation tube 2 through the filter assembly.

[0026] like Figure 17 and 18 As shown, a rotating shaft 16 passes through the middle of the air duct 9, and the sleeve seat 93 is sleeved on the outside of the rotating shaft 16, so that the air duct 9 can play the role of a movable connection to the rotating shaft 16, ensuring that the rotating shaft 16 is centrally located in the ventilation pipe 2.

[0027] The top of the rotating shaft 16 extends out of the air guide pipe 9 and is connected to the top blade 4 through the rotating disk 161; When the energy-saving central air conditioner is working, air is blown into the ventilation duct 1, and the air then enters the ventilation pipe 2 through the ventilation duct 1. At this time, the air entering the ventilation pipe 2 first contacts the top blades 4, pushing the top blades 4 to rotate, thereby causing the rotating shaft 16 to drive the bottom air outlet assembly 5 to rotate.

[0028] The bottom of the rotating shaft 16 extends out of the air guide pipe 9 and is fixed with the bottom air outlet assembly 5, and the bottom air outlet assembly 5 is connected to the bottom blade 505; The filter assembly includes an outer protective tube 11 inserted into the bottom of the ventilation duct 2 (that is, the outer protective tube 11 is inserted into the air outlet duct 204), an inner protective tube assembly 8 located inside the outer protective tube 11, and an annular filter element 7 fixed to the outside of the inner protective tube assembly 8 and the inside of the outer protective tube 11. An annular support frame 10 supported at the bottom of the annular filter element 7 is also provided between the outside of the inner protective tube assembly 8 and the inside of the outer protective tube 11.

[0029] The inner protective tube assembly 8 includes a top inner protective tube 803, a bottom inner protective tube 802, and a bottom inner trumpet 801 connected between the top inner protective tube 803 and the bottom inner protective tube 802. Several groups of support blocks 804 are evenly spaced on the top outer side of the top inner protective tube 803. The support blocks 804 are supported on the inner wall of the outer protective tube 11, and combined with the setting of the annular support frame 10, the inner protective tube assembly 8 can be centrally supported inside the outer protective tube 11.

[0030] Furthermore, several groups of support blocks 804 and annular support frame 10 can also play a role in fixing the annular filter element 7.

[0031] like Figure 5 、 17 As shown in FIG18 , the diameter of the bottom inner bell tube 801 gradually decreases from top to bottom, so that the wind passing through the annular filter element 7 has a larger diffusion space.

[0032] Several groups of middle fan assemblies driven by the bottom air outlet assembly 5 are evenly distributed at the bottom of the filter assembly; The bottom air outlet assembly 5 includes a bottom fixed plate 501, an inner gear ring 503 fixed to the top of the outer side of the bottom fixed plate 501 by a connecting frame 504, and a connecting tube 506 centrally located on the top of the bottom fixed plate 501; The connecting tube 506 is sleeved on the outside of the bottom of the rotating shaft 16, and the bottom fixing plate 501 is fixed to the bottom of the rotating shaft 16 by bolts 502, so that the bottom fixing plate 501 is close to the bottom inner protective tube 802, thereby forming a relatively sealed space between the bottom fixing plate 501, the inner protective tube assembly 8 and the air duct 9, which can prevent outside air from affecting the movement of the swing block 18, and also prevent dust from entering and interfering with the smooth movable connection between the rotating shaft 16 and the air duct 9.

[0033] The bottom blades 505 are fixed at equal intervals to the outer wall of the bottom fixed plate 501. When the top blades 4 drive the bottom air outlet assembly 5 to rotate via the rotating shaft 16, the bottom blades 505 on the bottom air outlet assembly 5 also rotate synchronously, thereby guiding the air filtered by the annular filter element 7, so that the air discharged from the bottom of the ventilation duct 2 can cover a wider area.

[0034] The middle fan assembly includes a connecting seat 12 fixed at equal intervals on the inner wall of the outer bottom of the filter assembly (that is, the connecting seat 12 is fixed at equal intervals on the inner wall of the bottom of the outer protective tube 11), a rotating rod 13 passing through the connecting seat 12, a middle fan 14 fixed on the top of the rotating rod 13, and a gear 6 fixed at the bottom of the rotating rod 13, and the gear 6 is engaged with the inner wall of the inner gear ring 503.

[0035] In this way, when the bottom air outlet component 5 rotates, the inner gear ring 503 on the bottom air outlet component 5 will drive the gear 6 to rotate. At this time, since the diameter of the inner gear ring 503 is larger than the diameter of the gear 6, the gear 6 can drive the middle fan 14 to rotate at high speed at the bottom of the annular filter element 7 through the rotating rod 13. After the wind passes through the annular filter element 7, the middle fan 14 can quickly generate suction to the wind, thereby increasing the speed at which the wind is discharged through the bottom of the ventilation duct 2. In this way, although the annular filter element 7 has a certain blocking effect on the wind, the air outlet speed at the bottom of the ventilation duct 2 can still be ensured.

[0036] A rubber windward cover 3 is fixed to the outside of the top of the turntable 161. A plurality of equally spaced abutment components and a group of annular expansion air bags 24 are provided on the inside of the top of the turntable 161. The abutment assembly includes an arc-shaped seat 165 fixed at equal intervals on the top of the rotating disk 161, a protruding plate 26 provided on the inner side of the top of the arc-shaped seat 165, and an abutment arm movably connected to the protruding plate 26 by a pin 25; An arc-shaped plate 27 is provided at the top of the supporting arm, which is fixed to the inner wall of the rubber windward cover 3. The annular expansion airbag 24 is fixed to the bottom inner wall of several groups of arc-shaped seats 165. A driving plate 28 is provided at the bottom of the supporting arm, which is fixed to the inner wall of the annular expansion airbag 24.

[0037] A fling block air compressor assembly is symmetrically provided on the top of the bottom air outlet assembly 5, and the fling block air compressor assembly is connected to the annular expansion air bag 24 through a channel system on the rotating shaft 16; The channel system includes a vent pipe 164 connected to the inner wall of the annular expansion airbag 24, a vent channel 163 provided inside the rotating shaft 16, and air inlet grooves 162 distributed at equal intervals on the bottom side of the rotating shaft 16; The vent pipe 164 is in communication with the air intake groove 162 through the vent passage 163 .

[0038] The block-swinging air-compressing assembly includes a block-swinging seat 15 fixed on the bottom air outlet assembly 5, a block-swinging seat 15 internally provided with a block-swinging 18, and a cylinder 17; A slider 21 is provided on the side of the throw block 18, and the slider 21 is slidably connected to the slide groove 22 on the side of the throw block seat 15. The cylinder 17 is fixed to the outside of the throw block seat 15. The middle part of the outer side of the throw block 18 is connected to a piston 23 through a piston rod 20. The piston 23 is located in the cylinder 17; The outer side of the cylinder body 17 is also provided with an air guide pipe 19, the other end of the air guide pipe 19 is connected to the ventilation channel 163 through the air inlet groove 162, and the top inner wall of the connecting cylinder 506 is also provided with an annular groove 5061 (such as Figure 12 As shown in the figure), since the connecting tube 506 is sleeved on the outer side of the bottom of the rotating shaft 16, the annular groove 5061 is sealed on the outer side of the air intake groove 162. One end of the air guide pipe 19 is connected to the cylinder body 17, and the other end is connected to the annular groove 5061. The cylinder body 17 can be connected to the annular expansion airbag 24 through the air guide pipe 19, the air intake groove 162, the ventilation channel 163, and the ventilation pipe 164.

[0039] When the wind speed generated by the energy-saving central air conditioner is high, the time for the wind to pass through the annular filter element 7 is short, and the filtering effect of the annular filter element 7 on the wind cannot be guaranteed. At this time, the top blades 4 and the rotating shaft 16 make the bottom air outlet assembly 5 have a high speed. Under the action of the large centrifugal force, the throwing blocks 18 in the throwing block seat 15 are close to the corresponding cylinder 17, and the distance between the two groups of throwing blocks 18 is relatively large (such as Figure 18 shown); At this time, the swing block 18 drives the piston 23 to move further into the cylinder 17 through the piston rod 20, so that the piston 23 introduces the air in the cylinder 17 into the annular groove 5061 through the air guide pipe 19. The air then enters the annular expansion airbag 24 through the air intake groove 162, the ventilation channel 163 and the ventilation pipe 164, causing the annular expansion airbag 24 to further expand. As the annular expansion bag 24 further expands, it drives the arc plate 27 to rotate and open around the pin shaft 25 through the driving plate 28, causing the diameter of the rubber windward cover 3 to increase, thereby reducing the area for wind to enter through the air inlet pipe 202 and the amount of air entering, thereby reducing the driving force of the wind on the top blades 4, thereby reducing the rotation speed of the top blades 4, the rotating shaft 16 and the bottom air outlet assembly 5; This reduces the amount of air intake and ensures the filtering effect of the annular filter element 7 on the wind.

[0040] After the rotation of the bottom air outlet assembly 5 is reduced, the centrifugal force on the swing block 18 on it becomes smaller, which will reduce the distance between the two sets of swing blocks 18. In this way, the swing block 18 drives the piston 23 to gradually return to its original position through the piston rod 20, forming a negative pressure in the cylinder 17. The air in the annular expansion airbag 24 will then enter the cylinder 17 through the vent pipe 164, the vent channel 163, the air inlet groove 162, the annular groove 5061 and the air guide pipe 19. At this time, the annular expansion airbag 24 is relatively reduced, and it drives the arc plate 27 to rotate and close around the pin shaft 25 through the driving plate 28, so that the diameter of the rubber windward cover 3 becomes smaller, thereby increasing the area for wind to enter through the air inlet pipe 202 and reducing the amount of air entering, thereby increasing the driving force of the wind on the top blades 4, and then the rotation speed of the top blades 4, the rotating shaft 16 and the bottom air outlet assembly 5 increases again; The above dynamic process gradually enters a dynamic equilibrium state, which will ensure the filtering effect of the annular filter element 7 on the wind.

[0041] Under the action of the incoming air at the top of the ventilation duct 2, the top blade 4 drives the bottom air outlet assembly 5 to rotate through the rotating shaft 16. The incoming air at the top of the ventilation duct 2 is accelerated through the air guide duct 9 and then filtered through the filter assembly, and the bottom air outlet assembly 5 drives the middle fan assembly to accelerate the outgoing air passing through the filter assembly, and finally expands the range of the air outlet through the bottom of the ventilation duct 2 through the bottom blade 505.

[0042] During assembly, installation of filter components: The annular filter element 7 is placed between the outer side of the inner protective tube assembly 8 and the inner side of the outer protective tube 11 , and the annular support frame 10 is used to support the bottom of the annular filter element 7 so as to fix the annular filter element 7 in a suitable position.

[0043] Assemble the inner protective tube assembly 8 (including the top inner protective tube 803, the bottom inner protective tube 802 and the bottom inner trumpet 801), and support it on the inner wall of the outer protective tube 11 through several groups of support blocks 804 on the top outside of the top inner protective tube 803, so that the inner protective tube assembly 8 is centered inside the outer protective tube 11, completing the assembly of the filter assembly.

[0044] Insert the assembled filter assembly into the bottom of the ventilation pipe 2 (ie, the outer protective tube 11 is inserted into the air outlet pipe 204 ), ensuring that it is installed in place.

[0045] Installation of air duct, shaft and other components: Assemble the air duct 9 (including the sleeve seat 93, the support tube 91 and the top inner trumpet 92) so that the support tube 91 is inserted into the top inner side of the inner protective tube assembly 8 (i.e., the inside of the top inner protective tube 803). Through this fit, the air duct 9 is fixed in the center inside the ventilation pipe 2.

[0046] The rotating shaft 16 is passed through the sleeve seat 93 of the air duct 9 so that the sleeve seat 93 is sleeved on the outside of the rotating shaft 16 to ensure that the rotating shaft 16 is centered in the ventilation pipe 2.

[0047] A turntable 161 is installed on the top of the rotating shaft 16, and the top blades 4 are connected through the turntable 161. The bottom air outlet assembly 5 (including a bottom fixing plate 501, an inner gear ring 503, a connecting tube 506, etc.) is installed at the bottom of the rotating shaft 16, and the bottom fixing plate 501 is fixed to the bottom of the rotating shaft 16 with bolts 502, so that the bottom fixing plate 501 is close to the bottom inner protective tube 802.

[0048] Installation of the middle fan assembly: The connecting seats 12 are fixed on the inner wall of the bottom of the outer protective tube 11 at equal intervals.

[0049] The rotating rod 13 passes through the connecting seat 12, the middle fan 14 is installed on the top of the rotating rod 13, the gear 6 is installed on the bottom of the rotating rod 13, and the gear 6 is engaged with the inner wall of the inner gear ring 503 to complete the installation of the middle fan assembly.

[0050] Installation of other components: The rubber windward cover 3 is fixed on the outer side of the top of the turntable 161, and the abutment assembly (including the arc seat 165, the protruding plate 26, the abutment arm, etc.) and the annular expansion airbag 24 are installed on the inner side of the top of the turntable 161 to ensure that the components are firmly connected.

[0051] The throwing block air compression assembly (including the throwing block seat 15, the throwing block 18, the cylinder body 17, etc.) is symmetrically installed on the top of the bottom air outlet assembly 5, and the throwing block air compression assembly is connected to the annular expansion airbag 24 through the channel system (ventilation pipe 164, ventilation channel 163, air intake groove 162, etc.) on the rotating shaft 16 to ensure that the air path connection is correct.

[0052] When disassembling, the filter assembly and the air duct 9, etc. are disassembled: Remove the filter assembly from the bottom of the ventilation pipe 2. Since the inner protective tube assembly 8 is supported on the inner wall of the outer protective tube 11 by the support block 804, the inner protective tube assembly 8 and the outer protective tube 11 can be easily separated, and then the annular filter element 7 and the annular support frame 10 can be removed.

[0053] Pull out the air duct 9 from the inner protective tube assembly 8. Since the support tube 91 and the top inner protective tube 803 are inserted and matched, they can be separated smoothly.

[0054] Remove the top blade 4 and the turntable 161 on the top of the rotating shaft 16, then remove the bottom air outlet assembly 5 and the bolts 502 at the bottom of the rotating shaft 16, remove the bottom air outlet assembly 5, and thus remove the rotating shaft 16 from the air duct 9.

[0055] Disassembly of the middle fan assembly and other components: Disassemble the connector between the connecting seat 12 and the bottom inner wall of the outer protective tube 11, and remove the middle fan assembly (including the connecting seat 12, the rotating rod 13, the middle fan 14 and the gear 6).

[0056] Disassemble the rubber windward cover 3, the abutting assembly and the connecting parts between the annular expansion airbag 24 and the turntable 161, and remove these components.

[0057] Disassemble the connectors between the throwing block air compressor assembly and the bottom air outlet assembly 5, as well as the connections between the various components of the channel system, and remove the throwing block air compressor assembly and related air path components.

[0058] To sum up, the entire ventilation structure adopts a modular design. For example, the filter assembly, air duct assembly, central fan assembly, etc., each module can be assembled independently and then installed as a whole, which is convenient for division of labor and cooperation. The installation process between each component is relatively simple and the positioning is accurate, which reduces the installation difficulty and installation error and improves the installation efficiency.

[0059] Because the connections between the components are relatively simple and removable, if a component fails or needs to be replaced, it can be quickly removed for repair or replacement without requiring extensive disassembly of the entire ventilation structure, reducing repair time and costs. For example, if the annular filter element 7 needs to be replaced after a period of use, the filter assembly can be easily removed for replacement.

[0060] Specifically, during use, the initial introduction and driving of wind: When the energy-saving central air conditioner is operating, wind enters ventilation duct 1 from the air outlet, and then enters ventilation pipe 2 through ventilation pipe 1. The wind entering ventilation pipe 2 first hits top blades 4, pushing them to rotate. Top blades 4 then drive bottom air outlet assembly 5 to rotate via shaft 16.

[0061] Wind acceleration and filtering: The diameters of the outer trumpet 203 of the ventilation duct 2 and the top inner trumpet 92 of the air guide duct 9 gradually decrease from top to bottom, so that the wind entering the ventilation duct 2 is accelerated when passing between the two, thereby increasing the speed of the wind passing through the annular filter element 7 and realizing rapid filtration of the wind by the annular filter element 7.

[0062] The wind is accelerated by the air guide pipe 9 and enters the filter assembly. The filter assembly consists of an outer protective tube 11, an inner protective tube assembly 8, an annular filter element 7 and an annular support frame 10. The annular filter element 7 filters the wind.

[0063] Acceleration of the central fan assembly: When the bottom air outlet assembly 5 rotates, the internal gear ring 503 on it drives the meshing gear 6 to rotate. Because the diameter of the internal gear ring 503 is larger than that of the gear 6, the gear 6 drives the central fan 14 at high speed at the bottom of the annular filter element 7 via the rotating rod 13. This creates a suction force on the air passing through the annular filter element 7, increasing the speed at which the air is discharged from the bottom of the ventilation duct 2 and compensating for the air blocking effect of the annular filter element 7.

[0064] Guidance of the bottom blades: When the bottom air outlet assembly 5 rotates, the bottom blades 505 rotate synchronously, guiding the air filtered by the annular filter element 7, so that the air discharged from the bottom of the ventilation duct 2 covers a wider range.

[0065] Adjustment of air intake volume and filtration effect (dynamic balance): When the wind speed generated by the energy-saving central air conditioner is high and the time for the wind to pass through the annular filter element 7 is short, affecting the filtering effect, the top blades 4 and the rotating shaft 16 make the bottom air outlet component 5 rotate at a higher speed, and the throwing block 18 approaches the cylinder body 17 under the action of centrifugal force, and drives the piston 23 through the piston rod 20 to introduce the air in the cylinder body 17 into the annular expansion airbag 24 through the air guide pipe 19, the annular groove 5061, the air intake groove 162, the ventilation channel 163 and the ventilation pipe 164, causing it to expand.

[0066] The annular expansion airbag 24 expands and drives the arc plate 27 to rotate and open through the driving plate 28, so that the diameter of the rubber windward cover 3 becomes larger, the air inlet area of the air inlet pipe 202 is reduced, the air inlet volume is reduced, and the rotation speed of the top blade 4, the rotating shaft 16 and the bottom air outlet component 5 is reduced, thereby ensuring the filtering effect of the annular filter element 7.

[0067] After the rotation speed of the bottom air outlet assembly 5 decreases, the centrifugal force of the swing block 18 decreases, and the swing block 18 drives the piston 23 to reset, forming a negative pressure in the cylinder 17. The air in the annular expansion airbag 24 flows back into the cylinder 17, and the annular expansion airbag 24 shrinks, driving the curved plate 27 to rotate and close. The diameter of the rubber windward cover 3 decreases, the air inlet area increases, and the air intake volume increases. The rotation speed of the top blade 4, the rotating shaft 16, and the bottom air outlet assembly 5 increases again. Through this dynamic process, the system gradually reaches dynamic equilibrium, ensuring the filtering effect of the annular filter element 7 on the air.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving central air-conditioning ventilation structure, comprising ventilation pipes (2) installed at equal intervals at the bottom of a ventilation duct (1), characterized in that: The ventilation pipe (2) is internally fixed with an air guide pipe (9) by using a filter assembly, the middle of the air guide pipe (9) is penetrated by a rotating shaft (16), and the top of the rotating shaft (16) extends out of the air guide pipe (9) and is connected to a top blade (4) via a rotating disk (161); A bottom air outlet assembly (5) is fixed to the bottom of the rotating shaft (16) after extending out of the air guide pipe (9), and a plurality of groups of middle fan assemblies driven by the bottom air outlet assembly (5) are evenly distributed at the bottom of the filter assembly, and the bottom air outlet assembly (5) is connected to a bottom blade (505); A rubber windward cover (3) is fixed to the outer side of the top of the turntable (161), and a plurality of groups of abutment components distributed at equal intervals and a group of annular expansion air bags (24) located on the outer side of the bottom of the abutment components are provided on the inner side of the top of the turntable (161); A fling block air compression assembly is symmetrically provided on the top of the bottom air outlet assembly (5), and the fling block air compression assembly is connected to the annular expansion air bag (24) through a channel system on the rotating shaft (16); The top blade (4) drives the bottom air outlet assembly (5) to rotate via the rotating shaft (16) under the action of the incoming air from the top of the ventilation duct (2). The incoming air from the top of the ventilation duct (2) is accelerated via the air guide duct (9) and then filtered via the filter assembly. The bottom air outlet assembly (5) drives the middle fan assembly to accelerate the outgoing air that passes through the filter assembly. Finally, the bottom blade (505) expands the range of the air outlet from the bottom of the ventilation duct (2).

2. An energy-saving central air-conditioning ventilation structure according to claim 1, characterized in that: The ventilation pipe (2) comprises an outer bell tube (203) connected between the air inlet pipe (202) and the air outlet pipe (204), wherein the diameter of the outer bell tube (203) gradually decreases from top to bottom, and a flange (201) fixed to the bottom of the ventilation duct (1) is provided on the outer side of the top of the air inlet pipe (202).

3. The energy-saving central air-conditioning ventilation structure according to claim 1, characterized in that: The filter assembly comprises an outer protective tube (11) inserted into the bottom of the ventilation tube (2), an inner protective tube assembly (8) located inside the outer protective tube (11), and an annular filter element (7) fixed to the outside of the inner protective tube assembly (8) and the inside of the outer protective tube (11); an annular support frame (10) supported on the bottom of the annular filter element (7) is further provided between the outside of the inner protective tube assembly (8) and the inside of the outer protective tube (11).

4. The energy-saving central air-conditioning ventilation structure according to claim 3, characterized in that: The inner protective tube assembly (8) comprises a top inner protective tube (803), a bottom inner protective tube (802), and a bottom inner bell tube (801) connected between the top inner protective tube (803) and the bottom inner protective tube (802), wherein the diameter of the bottom inner bell tube (801) gradually decreases from top to bottom; Several groups of support blocks (804) are provided at equal intervals on the outer side of the top of the top inner protective tube (803), and the support blocks (804) are supported on the inner wall of the outer protective tube (11).

5. The energy-saving central air-conditioning ventilation structure according to claim 1, characterized in that: The air guide pipe (9) comprises a sleeve seat (93) sleeved on the outside of the rotating shaft (16), a support tube (91) located outside the sleeve seat (93), and a top inner trumpet tube (92) connected between the top of the sleeve seat (93) and the top of the support tube (91), wherein the diameter of the top inner trumpet tube (92) gradually decreases from top to bottom; The support tube (91) is inserted into the inner side of the top of the inner protective tube assembly (8).

6. The energy-saving central air-conditioning ventilation structure according to claim 1, characterized in that: The bottom air outlet assembly (5) comprises a bottom fixed plate (501), an inner gear ring (503) fixed to the top of the outer side of the bottom fixed plate (501) by a connecting frame (504), and a connecting tube (506) centrally arranged on the top of the bottom fixed plate (501); The connecting tube (506) is sleeved on the outside of the bottom of the rotating shaft (16), and the bottom fixing plate (501) is fixed to the bottom of the rotating shaft (16) by means of bolts (502); The bottom blades (505) are fixed at equal intervals on the outer wall of the bottom fixed plate (501).

7. The energy-saving central air-conditioning ventilation structure according to claim 6, characterized in that: The middle fan assembly comprises a connecting seat (12) fixed at equal intervals on the inner wall of the outer side of the bottom of the filter assembly, a rotating rod (13) passing through the connecting seat (12), a middle fan (14) fixed on the top of the rotating rod (13), and a gear (6) fixed on the bottom of the rotating rod (13), wherein the gear (6) is engaged with the inner wall of the inner gear ring (503).

8. The energy-saving central air-conditioning ventilation structure according to claim 1, characterized in that: The abutting assembly comprises an arc-shaped seat (165) fixed at equal intervals on the top of the turntable (161), a convex plate (26) provided on the inner side of the top of the arc-shaped seat (165), and an abutting arm movably connected to the convex plate (26) by a pin (25); The top of the supporting arm is provided with an arc plate (27), which is fixed to the inner wall of the rubber windward cover (3). The annular expansion airbag (24) is fixed to the inner wall of the bottom of the plurality of groups of arc seats (165). The bottom of the supporting arm is provided with a driving plate (28), which is fixed to the inner wall of the annular expansion airbag (24).

9. The energy-saving central air-conditioning ventilation structure according to claim 8, characterized in that: The channel system includes a vent pipe (164) connected to the inner wall of the annular expansion airbag (24), a vent channel (163) provided inside the rotating shaft (16), and air intake grooves (162) distributed at equal intervals on the bottom side of the rotating shaft (16); The vent pipe (164) is in communication with the air intake groove (162) via the vent channel (163).

10. The energy-saving central air-conditioning ventilation structure according to claim 9, characterized in that: The fling block air compression assembly comprises a fling block seat (15) fixed on the bottom air outlet assembly (5), a fling block (18) arranged inside the fling block seat (15), and a cylinder body (17); The side of the swing block (18) is provided with a slider (21), the slider (21) is slidably connected to the slide groove (22) on the side of the swing block seat (15), the cylinder (17) is fixed to the inside and outside of the swing block seat (15), and the middle part of the outside of the swing block (18) is connected to a piston (23) through a piston rod (20), and the piston (23) is located in the cylinder (17); An air guide pipe (19) is further provided on the outside of the cylinder body (17), and the other end of the air guide pipe (19) is connected to the ventilation channel (163) through the air intake groove (162).

Images