An electromechanical intelligent ventilation device

Abstract

The present invention relates to an electromechanical intelligent ventilation device, which includes an air duct body. The air duct body includes a number of air duct units connected in series in sequence. Both ends of each air duct unit are provided with connecting flanges, and two adjacent air duct units are connected through the connecting flanges. It is characterized in that: a shock absorption and buffering structure is provided at the air inlet end of each air duct unit. The shock absorption and buffering structure includes a wind guiding sleeve. The wind guiding sleeve is a tubular structure. The diameter of one end of the wind guiding sleeve close to the air inlet end of the air duct unit is larger than that of the other end. The outer wall of the end of the wind guiding sleeve close to the air inlet end of the air duct unit fits the inner wall of the air duct unit, and a flanging that turns outward is provided at the end of the wind guiding sleeve close to the air inlet end of the air duct unit. With this technical solution, it can effectively weaken the impact force on the side wall when air flows in the air duct body, reduce the vibration of the air duct body in the operating state, so as to reduce the adverse impact on the hoisting structure. At the same time, it can also weaken the noise formed by the vibration of the air duct body caused by air flow.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation equipment, and particularly relates to an electromechanically intelligent ventilation equipment. Background Art

[0002] Ventilation equipment is an essential facility for various large buildings. It continuously conveys external air to continuously update the air inside the building. And air ducts are indispensable facilities in air conveyance. Air ducts can be divided into various types such as circular air ducts, rectangular air ducts, and oval air ducts. Among them, the circular air duct has the smallest resistance but the largest height dimension and is complex to manufacture, so rectangular air ducts are mainly used in applications. According to the material, air ducts can be divided into metal air ducts, composite air ducts, and polymer air ducts. Among them, the commonly used metal air ducts include galvanized iron sheet air ducts and stainless steel air ducts. During the installation process of air ducts, generally, building planes such as roofs and floors that have a supporting role and are horizontal planes are used as the hoisting surfaces, and a suspension mechanism is used to suspend the air ducts below the hoisting surfaces.

[0003] Due to the internal wind pressure fluctuation in the ventilation state of the air duct, the self-breathing vibration and noise radiation of the air duct, the vibration and noise of the air duct and its hangers caused by the vibration of the fan, and the safety of the heating and ventilation air duct and hanger structure in the case of an earthquake are all major issues worthy of attention.

[0004] The currently used heating and ventilation air duct hangers mainly include support type hangers, spring hangers, variable spring hangers, and rubber hangers. However, they have the following disadvantages respectively:

[0005] 1. Since the support type hanger does not adopt any vibration isolation and noise reduction structure or component, the entire structural component is rigidly connected, and the structural stiffness is fixed and cannot be adjusted. Therefore, it can only ensure the structural safety of the heating and ventilation air duct system under normal working conditions, but cannot play a role in vibration isolation, earthquake resistance, and noise reduction.

[0006] 2. Spring hangers, variable spring hangers, and rubber hangers have a certain effect on vibration isolation, earthquake resistance, and noise reduction of the system as a whole. However, since they do not have any structure or component that restricts the local vibration of the air duct in the abdomen of the air duct, they cannot effectively reduce the noise caused by the local breathing vibration of the thin-walled air duct wall under the internal pressure fluctuation.

[0007] In order to solve the vibration problem of the air duct during ventilation, the existing common solutions are all to improve and adjust the hoisting brackets to passively cope with the vibration of the air duct. However, this method only reduces the impact of the air duct vibration on the installation position, and the vibration of the air duct is still not alleviated, and the noise problem will not be reduced. Summary of the Invention

[0008] In view of this, the purpose of the present invention is to provide an electromechanical intelligent ventilation device to solve the problem of vibration caused by the ineffective reduction of air flow in the air duct in the prior art.

[0009] The present invention is achieved through the following technical solutions:

[0010] An electromechanical intelligent ventilation device includes an air duct body, the air duct body includes a number of air duct units connected in series in sequence, both ends of each air duct unit are provided with connecting flanges, and two adjacent air duct units are connected through the connecting flanges. A shock absorption and buffering structure is provided at the air inlet end of each air duct unit. The shock absorption and buffering structure includes a wind guiding sleeve. The wind guiding sleeve is a tubular structure. One end of the wind guiding sleeve near the air inlet end of the air duct unit has a larger diameter than the other end. The outer wall of the end of the wind guiding sleeve near the air inlet end of the air duct unit fits the inner wall of the air duct unit, and the end of the wind guiding sleeve near the air inlet end of the air duct unit is provided with a flanging that turns outward and is installed between the connecting flanges of two adjacent air duct units by extrusion of the flanging. A number of air permeable holes are provided on the side wall of the wind guiding sleeve.

[0011] Adopting the above technical solution, the air duct body is used to connect with power equipment such as a fan. Air is introduced into the air duct body through the fan. The air entering the air duct body will have a relatively high pressure. Since the air duct body is composed of a number of air duct units connected in series, a wind guiding sleeve is provided at the air inlet end of each air duct unit. The end with a larger diameter of the wind guiding sleeve is used as the air inlet end, and the end with a smaller diameter is used as the air outlet end. When the air enters the wind guiding sleeve, it will impact the wind guiding sleeve. The entire inner side surface of the wind guiding sleeve will serve as the impact surface for the flowing air, which can reduce the impact of the entering air on the side wall of the air duct body. And the number of air permeable holes provided on the side wall of the wind guiding sleeve will serve as the flow channels for air circulation when the air impacts, which can weaken the impact of the flowing air on the wind guiding sleeve. The air discharged from the air permeable holes is in a dispersed state and will not cause a large impact on the side wall of the air duct unit, which can effectively weaken the impact force of the air flowing in the air duct body on the side wall, reduce the vibration of the air duct body in the operating state, so as to reduce the adverse impact on the hoisting structure. At the same time, it can also weaken the noise formed by the vibration of the air duct body caused by air flow.

[0012] Further defined, the wind guiding sleeve is made of elastic rubber.

[0013] The wind guiding cover is made of elastic rubber and will have an elastic deformation amount in terms of structure. It can generate elastic deformation when affected by the change of air flow impact. Through elastic deformation and stretching, it can further weaken the vibration caused by air flow; specifically, the wind guiding sleeve can be made of polyurethane rubber, which has a relatively high structural stiffness and at the same time has a good elastic variable. Its shock absorption and buffering performance is good, and it can absorb 10% - 20% of the vibration energy at room temperature. The higher the vibration frequency, the greater the energy absorption.

[0014] Further defined, a circular reinforcing rib surrounding the port is provided at the air outlet end of the air guide sleeve.

[0015] The air outlet end of the air guide cover is structurally strengthened by the circular reinforcing rib, which can reduce the deformation of the air outlet end during the impact process of air flow. When the air flows, high-frequency vibration will be generated at the air outlet end of the air guide cover. The circular reinforcing rib can prevent a large amplitude from being generated at the edge due to the high-frequency vibration, and the high-frequency vibration will be absorbed by the flexibility of the elastic rubber itself, weakening the vibration energy transmitted to the air duct unit.

[0016] Further defined, a plurality of strip-shaped reinforcing ribs extending along the length direction and evenly distributed are also provided on the air guide sleeve, and a plurality of the ventilation holes are arranged in rows along the length direction between two adjacent strip-shaped reinforcing ribs.

[0017] By providing the strip-shaped reinforcing ribs, the structure of the air guide cover in the length direction can be strengthened, the over-extension in the compressed state of the air flow can be reduced, and the structural stability of the air guide cover can be improved.

[0018] Further defined, it further includes an air supply mechanism, the air supply mechanism includes a fan, an air inlet duct and a driving motor, the driving motor is used to drive the fan to rotate, the air inlet end of the fan is connected to the air inlet duct, the air outlet end of the fan is connected to the air duct body, a shock pad is provided on the fan, and the shock pad is located between the fan and the driving motor and is used to buffer the vibration during the operation of the driving motor.

[0019] The air supply mechanism is used to introduce air into the air duct body. The driving motor is the power source for the operation of the fan. By providing a shock pad between the driving motor and the fan, the vibration generated during the operation of the driving motor can be absorbed, and its transmission to the ventilation duct body through the fan can be reduced, so as to weaken the vibration and noise generated by the overall structure.

[0020] Further defined, a plurality of mounting holes for bolts to pass through are formed at the edge of the shock pad, a shock-absorbing bushing is arranged in the mounting holes, the shock-absorbing bushing is a hollow annular structure, and rigid liners are arranged at both ends of the shock-absorbing bushing.

[0021] The shock-absorbing pad can be made of flexible shock-absorbing materials such as rubber. It absorbs the vibration generated when the drive motor is running through its own structural characteristics. The connection and installation of the drive motor and the fan are usually bolted. The shock-absorbing bushing will be located between the connecting bolts and the shock-absorbing pad when installed and connected. The shock-absorbing bushing is a hollow ring structure, and its two ends are against the fan and the drive motor through rigid liners. In the initial state, the two rigid bushings will be pushed out of the mounting hole by the expanded shock-absorbing bushings. When the mounting bolts are tightened, the two rigid liners will be squeezed into the mounting holes. The shock-absorbing bushing will be in a compressed state and will serve as the contact force point between the drive motor and the fan. The force point can undergo a slight elastic deformation, thereby increasing the absorption of the vibration caused by the operation of the drive motor and weakening the vibration transmission effect.

[0022] It is further defined that the shock-absorbing pad is an annular hollow structure, the outer edge of the shock-absorbing pad is provided with a plurality of connecting ears with holes for installation bolts to pass through, and the top surface and the bottom surface of the shock-absorbing pad are both corrugated structures.

[0023] The shock-absorbing pad is a hollow ring structure with extremely high deformation and elongation. It can effectively absorb the vibration caused by the operation of the fan. Its top and bottom surfaces are corrugated structures, which can be extended during the installation and connection process between the drive motor and the fan, facilitating installation operations. The corrugated structure will reduce the direct connection surface between the drive motor and the fan, reducing vibration transmission.

[0024] It is further defined that a protective cover is provided at the air inlet end of the air inlet duct, a plurality of slits for air to enter are opened on the protective cover, a filter assembly is provided in the air inlet duct, the filter assembly comprises two outer fixing rings, two inner fixing rings and a filter membrane, the two outer fixing rings and the two inner fixing rings are clamped at the edge and the center of the filter membrane respectively, a positioning rod is installed at the center of the inner side of the protective cover, one end of the positioning rod is connected to the protective cover, and the other end extends inwardly through the two inner fixing rings;

[0025] A positioning piece is installed on the outer side of the inner fixed ring. The positioning piece is an annular structure. The inner edge of the positioning piece is provided with a plurality of hooks extending inwards. The positioning rod is provided with a plurality of annular positioning grooves cooperating with the hooks.

[0026] The protective cover can prevent large debris from being sucked into the air inlet duct and damaging the fan, playing a protective role for the fan. The filter assembly arranged in the air inlet duct is used to further filter the fine dust in the air. The two outer fixing rings are used to clamp and fix the edge of the filter membrane, and the two inner fixing rings are used to clamp and fix the center of the filter membrane. During the use of the filter membrane, the filter holes will be gradually blocked by the dust carried in the air, the air resistance will increase, and the pressure difference on both sides of the filter membrane will increase. The center of the filter membrane will be recessed towards the fan side under the action of the pressure. During the recessing process, the filter membrane will be stretched, expanding the surface area of the filter membrane. When the filter membrane is stretched, the filter holes it has will be stretched and extended synchronously to enlarge the pore diameter, so as to ensure the air flow rate while maintaining the filtering effect. At the same time, during the movement of the inner fixing ring, it will push the inner fixing ring to slide towards the fan side. The positioning rod connected and installed on the protective cover will serve as the sliding track of the inner fixing ring. The positioning piece installed on the inner positioning ring cooperates with the annular positioning groove on the positioning rod through the hook arranged on the inner edge to fix the position of the inner fixing ring, so as to fix the shape of the filter membrane and improve the stability of the overall structure, which can effectively improve the effective service time of the filter membrane and reduce the cleaning and maintenance time interval.

[0027] Further defined, annular convex ribs are provided on the opposite sides of the two outer fixing rings and the two inner fixing rings.

[0028] Through the mutual engagement of the annular convex ribs, the fixing effect on the edge and the center position of the filter membrane can be effectively improved, thereby improving the stability of the overall structure.

[0029] Further defined, the center of the protective cover is recessed into the air inlet duct. The gap opened on the protective cover is in a strip structure and extends radially from the edge to the center.

[0030] The protective cover is in a funnel-shaped structure recessed into the air duct. The large debris intercepted by it will gather towards the bottom of the funnel structure under the scouring of the flowing air, avoiding the blockage of the gap and facilitating the subsequent cleaning.

[0031] The beneficial effects of the present invention are as follows:

[0032] It can effectively weaken the impact force of the air flowing in the air duct body on the side wall, reduce the vibration of the air duct body in the operating state, so as to reduce the adverse impact on the hoisting structure. At the same time, it can also weaken the noise formed by the vibration of the air duct body caused by the air flow.

[0033] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following specification. Brief Description of the Drawings

[0034] Figure 1 This is the front view of an electromechanical intelligent ventilation device of the present invention;

[0035] Figure 2 This is the top view of an electromechanical intelligent ventilation device of the present invention;

[0036] Figure 3 is Figure 2 the schematic cross-sectional structure diagram of A-A in

[0037] Figure 4 is Figure 3 the enlarged view of B in

[0038] Figure 5 is Figure 3 the enlarged view of C in

[0039] Figure 6 is Figure 3 the enlarged view of D in

[0040] Figure 7 is the schematic installation structure diagram of the shock pad;

[0041] Figure 8 is Figure 7 the enlarged view of E in

[0042] Figure 9 is the schematic installation structure diagram of another shock pad;

[0043] Figure 10 is Figure 9 the schematic cross-sectional structure diagram of the shock pad in

[0044] In the figure: 1, air duct unit; 2, air guide sleeve; 3, flanging; 4, ventilation hole; 5, annular reinforcing rib; 6, strip-shaped reinforcing rib; 7, fan; 8, air inlet duct; 9, drive motor; 10, shock pad; 11, shock-absorbing bushing; 12, rigid bushing; 13, protective cover; 14, outer fixing ring; 15, inner fixing ring; 16, filter membrane; 17, positioning piece; 18, hook; 19, positioning rod; 20, annular positioning groove; 21, annular convex rib. Detailed Embodiments

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0046] Accordingly, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0047] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0048] In the above description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "one side" and "the other side" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first" and "second" are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0049] In addition, terms such as "identical" do not mean that the components are required to be absolutely identical, but there may be slight differences. The term "vertical" only means that the positional relationship between components is relatively more vertical compared to "parallel", and does not mean that the structure must be completely vertical, but may be slightly inclined.

[0050] Please refer to Figure 1-8 , the present invention provides a technical solution: an electromechanical intelligent ventilation device, including an air duct body. The air duct body includes a plurality of air duct units 1 connected in series in sequence. Both ends of each air duct unit 1 are provided with connecting flanges. Adjacent two air duct units 1 are connected through the connecting flanges. A shock absorption and buffering structure is provided at the air inlet end of each air duct unit 1. The shock absorption and buffering structure includes a wind guiding sleeve 2. The wind guiding sleeve 2 is a tubular structure. The diameter of one end of the wind guiding sleeve 2 close to the air inlet end of the air duct unit 1 is larger than that of the other end. The outer wall of the end of the wind guiding sleeve 2 close to the air inlet end of the air duct unit 1 fits the inner wall of the air duct unit 1. And a flanging 3 that turns outward is provided at the end of the wind guiding sleeve 2 close to the air inlet end of the air duct unit 1, and is installed between the connecting flanges of two adjacent air duct units 1 by squeezing through the flanging 3. A plurality of ventilation holes 4 are provided on the side wall of the wind guiding sleeve 2.

[0051] In this embodiment, the air duct body is used to connect to a power device such as a fan 7. Air is introduced into the air duct body through the fan 7. The air entering the air duct body will have a relatively high pressure. Since the air duct body is composed of a plurality of air duct units 1 connected in series, a wind guide sleeve 2 is provided at the air inlet end of each air duct unit 1. The end with a larger diameter of the wind guide sleeve 2 is used as the air inlet end, and the end with a smaller diameter is used as the air outlet end. When the air enters the wind guide sleeve 2, it will impact the wind guide sleeve 2. The entire inner side surface of the wind guide sleeve 2 will serve as the impact surface for the flowing air, which can reduce the impact of the entering air on the side wall of the air duct body. And a number of ventilation holes 4 on the side wall of the wind guide sleeve 2 will serve as the flow channels for air circulation when impacted by the air, which can weaken the impact of the flowing air on the wind guide sleeve 2. The air discharged from the ventilation holes 4 is in a dispersed state and will not cause a large impact on the side wall of the air duct unit 1, which can effectively weaken the impact force of the air on the side wall when flowing in the air duct body, reduce the vibration of the air duct body in the operating state, so as to reduce the adverse impact on the hoisting structure. At the same time, it can also weaken the noise formed by the vibration of the air duct body caused by air flow.

[0052] In this embodiment, the wind guide sleeve 2 is made of elastic rubber. The wind guide cover is made of elastic rubber and will have an elastic deformation amount in terms of structure. It can generate elastic deformation when affected by the change of air flow impact. Through elastic deformation stretching, it can further weaken the vibration caused by air flow; specifically, the wind guide sleeve 2 can be made of polyurethane rubber, which has a relatively high structural stiffness and good elastic variables, and has good buffering and shock absorption performance. It can absorb 10% - 20% of the vibration energy at room temperature, and the higher the vibration frequency, the greater the energy absorption.

[0053] In this embodiment, an annular reinforcing rib 5 surrounding the port is provided at the air outlet end of the wind guide sleeve 2. The air outlet end of the wind guide cover is structurally strengthened through the annular reinforcing rib 5, which can reduce the deformation at the air outlet end during the air flow impact process. When the air flows, high-frequency vibration will be generated at the air outlet end of the wind guide cover. The annular reinforcing rib 5 can prevent a large amplitude from being generated at the edge due to high-frequency vibration, and the high-frequency vibration will be absorbed by the flexibility of the elastic rubber itself, weakening the vibration energy transmitted to the air duct unit 1.

[0054] In this embodiment, a number of strip-shaped reinforcing ribs 6 extending along the length direction and evenly distributed are further provided on the wind guide sleeve 2. A number of the ventilation holes 4 are arranged in rows along the length direction between two adjacent strip-shaped reinforcing ribs 6. By providing the strip-shaped reinforcing ribs 6, the structure of the wind guide cover in the length direction can be strengthened, which can reduce the excessive extension in the compressed state of air flow and improve the structural stability of the wind guide cover.

[0055] In this embodiment, it further includes a blower structure 7, the blower structure 7 includes a blower 7, an air inlet duct 8 and a driving motor 9. The driving motor 9 is used to drive the blower 7 to rotate. The air inlet end of the blower 7 is connected to the air inlet duct 8, and the air outlet end of the blower 7 is connected to the duct body. A shock-absorbing pad 10 is arranged on the blower 7, and the shock-absorbing pad 10 is located between the blower 7 and the driving motor 9 and is used to buffer the vibration generated when the driving motor 9 operates. The blower structure 7 is used to introduce air into the duct body. The driving motor 9 serves as the power source for the operation of the blower 7. By arranging the shock-absorbing pad 10 between the driving motor 9 and the blower 7, the vibration generated when the driving motor 9 operates can be absorbed, and its transmission to the ventilation duct body through the blower 7 can be reduced, so as to weaken the vibration and noise generated by the overall structure.

[0056] In this embodiment, a plurality of mounting holes for the mounting bolts to pass through are formed at the edge of the shock-absorbing pad 10, and a shock-absorbing bushing 11 is arranged in the mounting holes. The shock-absorbing bushing 11 is a hollow annular structure, and rigid liners 12 are arranged at both ends of the shock-absorbing bushing 11. The shock-absorbing pad 10 can be made of a flexible shock-absorbing material such as rubber, and absorbs the vibration generated when the driving motor 9 operates through its own structural characteristics. The connection and installation of the driving motor 9 and the blower 7 usually adopt bolt connection. The shock-absorbing bushing 11 will be located between the connection bolt and the shock-absorbing pad 10 in the installed connection state. The shock-absorbing bushing 11 is a hollow annular structure, and its two ends abut against the blower 7 and the driving motor 9 through the rigid liners 12. In the initial state, the two rigid bushings will be pushed out of the mounting holes by the expanded shock-absorbing bushing 11. In the state where the mounting bolts are tightened, the two rigid liners 12 will be squeezed into the mounting holes, and the shock-absorbing bushing 11 will be in a compressed state, which will serve as the contact stress point between the driving motor 9 and the blower 7, and this stress point can undergo a small amount of elastic deformation, improving the absorption amount of the vibration caused by the operation of the driving motor 9 and weakening the vibration transmission effect.

[0057] In this embodiment, a protective cover 13 is provided at the air inlet end of the air inlet duct 8. A number of gaps for air to enter are formed in the protective cover 13. A filtering assembly is arranged in the air inlet duct 8. The filtering assembly includes two outer fixing rings 14, two inner fixing rings 15 and a filter membrane 16. The two outer fixing rings 14 and the two inner fixing rings 15 are respectively clamped at the edge and the center of the filter membrane 16. A positioning rod 19 is installed at the center on the inner side of the protective cover 13. One end of the positioning rod 19 is connected to the protective cover 13, and the other end extends inward through the two inner fixing rings 15. A positioning piece 17 is installed on the outer side of the inner fixing ring 15 closer to the inside. The positioning piece 17 is of an annular structure. A number of inwardly extending hooks 18 are arranged on the inner edge of the positioning piece 17. A number of annular positioning grooves 20 cooperating with the hooks 18 are arranged on the positioning rod 19. The protective cover 13 can prevent large debris from being sucked into the air inlet duct and damaging the blower 7, playing a protective role for the blower 7. The filtering assembly arranged in the air inlet duct is used to further filter fine dust in the air. The two outer fixing rings 14 are used to clamp and fix the edge of the filter membrane 16, and the two inner fixing rings 15 are used to clamp and fix the center of the filter membrane 16. During the use of the filter membrane 16, the filter holes will be gradually blocked by the dust carried in the air, the air resistance increases, and the pressure difference on both sides of the filter membrane 16 increases. The center of the filter membrane 16 will be recessed toward the blower 7 under the action of the pressure. During the recessing process, the filter membrane 16 will be stretched, expanding the surface area of the filter membrane 16. When the filter membrane 16 is stretched, the filter holes thereof will be stretched and extended synchronously to enlarge the aperture, so as to ensure the air flow rate while maintaining the filtering effect. At the same time, during the movement of the inner fixing ring 15, the inner fixing ring 15 will be pushed to slide toward the blower 7 side. The positioning rod 19 connected and installed on the protective cover 13 will serve as the sliding track of the inner fixing ring 15. The positioning piece 17 installed on the inner positioning ring, and the positioning piece 17 cooperates with the annular positioning groove 20 on the positioning rod 19 through the hooks 18 arranged on the inner edge to fix the position of the inner fixing ring 15, so as to fix the shape of the filter membrane 16, improve the stability of the overall structure, effectively improve the effective service time of the filter membrane 16, and reduce the cleaning and maintenance time interval.

[0058] In this embodiment, annular convex ribs 21 are provided on the opposite sides of the two outer fixing rings 14 and the two inner fixing rings 15. Through the mutual engagement of the annular convex ribs 21, the fixing effect on the edge and the center position of the filter membrane 16 can be effectively improved, and further the stability of the overall structure can be improved.

[0059] In this embodiment, the center of the protective cover 13 is recessed into the air inlet duct 8. The gaps formed in the protective cover 13 are of strip structure and extend radially from the edge to the center. The protective cover 13 is in the shape of a funnel recessed into the air duct. The large debris intercepted by it will gather towards the bottom of the funnel structure under the scouring of the flowing air, avoiding the blockage of the gaps and facilitating the later cleaning.

[0060] As Figure 9 , Figure 10 shown, in this embodiment, the shock pad 10 is of annular hollow structure. A number of perforated connection lugs for the installation bolts to pass through are arranged on the outer edge of the shock pad 10. The top and bottom surfaces of the shock pad 10 are both corrugated structures. The shock pad 10 is of hollow annular structure and has a very high deformation extension amount, which can effectively absorb the vibration caused by the operation of the fan 7. Moreover, its top and bottom surfaces are both corrugated structures, which can be extended during the installation connection process between the driving motor 9 and the fan 7, facilitating the installation operation. And the corrugated structure will reduce the direct connection surface with the driving motor 9 and the fan 7, reducing the vibration transmission.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An electromechanical intelligent ventilation device, comprising a duct body, the duct body includes a number of duct units connected in series in sequence, both ends of each duct unit are provided with connecting flanges, and two adjacent duct units are connected through the connecting flanges. Characterized in that: A shock-absorbing and buffering structure is provided at the air inlet end of each duct unit. The shock-absorbing and buffering structure includes a wind guiding sleeve. The wind guiding sleeve is a tubular structure. One end of the wind guiding sleeve near the air inlet end of the duct unit has a larger diameter than the other end. The outer wall of the wind guiding sleeve at the end near the air inlet end of the duct unit fits against the inner wall of the duct unit. And a flanging that turns outward is provided at the end of the wind guiding sleeve near the air inlet end of the duct unit, and is installed between the connecting flanges of two adjacent duct units by squeezing the flanging. A number of air-permeable holes are provided on the side wall of the wind guiding sleeve; It further includes an air supply mechanism. The air supply mechanism includes a fan, an air inlet duct and a driving motor. The driving motor is used to drive the fan to rotate. The air inlet end of the fan is connected to the air inlet duct, and the air outlet end of the fan is connected to the duct body. A shock-absorbing pad is provided on the fan. The shock-absorbing pad is located between the fan and the driving motor and is used to buffer the vibration during the operation of the driving motor; A protective cover is provided at the air inlet end of the air inlet duct. A number of gaps for air to enter are provided on the protective cover. A filtering component is provided in the air inlet duct. The filtering component includes two outer fixing rings, two inner fixing rings and a filtering membrane. The two outer fixing rings and the two inner fixing rings respectively clamp the edge and the center of the filtering membrane. A positioning rod is installed at the center on the inner side of the protective cover. One end of the positioning rod is connected to the protective cover, and the other end extends inward through the two inner fixing rings; A positioning piece is installed on the outer side of the inner fixing ring closer to the inside. The positioning piece is a ring-shaped structure. A number of hooks extending inward are provided on the inner edge of the positioning piece. A number of annular positioning grooves for cooperating with the hooks are provided on the positioning rod.

2. An electromechanical intelligent ventilation device according to claim 1, Characterized in that: The wind guiding sleeve is made of elastic rubber.

3. An electromechanical intelligent ventilation device according to claim 2, Characterized in that: An annular reinforcing rib surrounding the port is provided at the air outlet end of the wind guiding sleeve.

4. An electromechanical intelligent ventilation device according to claim 3, Characterized in that: A number of strip-shaped reinforcing ribs extending along the length direction and evenly distributed are further provided on the wind guiding sleeve. A number of the air-permeable holes are arranged in rows along the length direction between two adjacent strip-shaped reinforcing ribs.

5. An electromechanical intelligent ventilation device according to claim 1, Characterized in that: A number of installation holes for bolts to pass through are provided at the edge of the shock-absorbing pad. A shock-absorbing bushing is provided in the installation holes. The shock-absorbing bushing is a hollow annular structure. Rigid liners are provided at both ends of the shock-absorbing bushing.

6. An electromechanical intelligent ventilation device according to claim 1, Characterized in that: The shock-absorbing pad is a ring-shaped hollow structure. A number of perforated connecting lugs for bolts to pass through are provided on the outer edge of the shock-absorbing pad. The top surface and the bottom surface of the shock-absorbing pad are both corrugated structures.

7. An electromechanical intelligent ventilation device according to claim 1, It is characterized in that: Circular convex ribs are provided on the opposite sides of the two outer fixing rings and the two inner fixing rings.

8. An electromechanical intelligent ventilation device according to claim 1, It is characterized in that: The center of the protective cover is recessed into the air inlet duct, and the gap formed in the protective cover is in a strip structure and extends radially from the edge to the center.

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