A self-cleaning fresh air ventilation device

Abstract

The application relates to the field of fresh air ventilation equipment, and relates to a self-cleaning fresh air ventilation device. The device is provided with a spray pipe linked with a bidirectional fan and a wind collecting cylinder, airflow flowing in the reverse direction is collected and injected into the spray pipe to be sprayed out, the mesh holes of an air inlet dust screen are periodically sprayed out, the mesh holes have a good stripping effect on the surface-adhered impurities, the purpose of efficient cleaning is achieved, and manual dismounting and cleaning are not needed; the device is provided with a rotating driving disc rotating along with a passive shaft and a fixed driving disc connected with a moving cylinder, the moving cylinder is driven to move transversely and reciprocally in the reverse blowing process, the annular airflow channel is periodically blocked, the airflow flow rate in the wind collecting cylinder is changed, the airflow is pulsed, pulse blowing is realized, and the blowing and cleaning effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fresh air ventilation equipment, in particular to a self-cleaning fresh air ventilation device. BACKGROUND

[0002] The fresh air ventilator is to send air on one side and draw air on the other side in a closed room, which relies on mechanical air supply and air drawing to form a new air flow field in the system. This independent indoor air replacement, purification and circulation system can replace the polluted air in the room while inputting natural fresh air, which is filtered, sterilized, heated, oxygenated and treated in multiple ways.

[0003] The conventional fresh air ventilation equipment filters the dust or other solid impurities in the outdoor air through the dustproof net. After a period of operation, the dustproof net is easily clogged, causing the air intake to decrease, and manual cleaning is required. SUMMARY

[0004] In view of the problems in the prior art, the purpose of the present application is to provide a self-cleaning fresh air ventilation device which can automatically clean the air inlet dustproof net in the direction and does not require manual cleaning.

[0005] To solve the above problems, the present application adopts the following technical solutions.

[0006] A self-cleaning fresh air ventilation device, comprising a ventilation cylinder installed in the wall and penetrating through the wall, a bidirectional fan installed in the ventilation cylinder, a bidirectional impeller installed near the outdoor side of the bidirectional fan, an air inlet dustproof net installed near the outdoor side of the ventilation cylinder, a spray pipe installed inside the ventilation cylinder at the air inlet dustproof net, a plurality of spray holes linearly and equidistantly arranged on the spray pipe, a mounting disc fixedly connected to the spray pipe, a mounting cylinder rotatably connected to the outside of the mounting disc, a support rod fixedly connecting the mounting cylinder and the inner wall of the ventilation cylinder, and an annular airflow channel formed between the outer wall of the mounting cylinder and the inner wall of the ventilation cylinder; a hollow connecting shaft connected to the spray pipe is fixedly connected to the mounting disc, a wind collecting cylinder is fixedly connected to the hollow connecting shaft, a driven shaft is fixedly connected to the inside of the wind collecting cylinder, a one-way reduction gear set is connected to the driven shaft, a driving shaft is connected to the one-way reduction gear set, and the driving shaft is fixedly connected to the bidirectional impeller.

[0007] A mounting shell is sleeved on the outside of the one-way reduction gear set, the mounting shell is fixedly connected to the inner wall of the ventilation cylinder through a support rod, and a transmission gear is installed on the inner wall of the mounting shell through a mounting shaft; the one-way reduction gear set comprises a gear cylinder fixedly connected to the driven shaft, a transmission gear meshed on the inside of the gear cylinder, and a ratchet gear fixedly connected to the driving shaft and meshed with the transmission gear; the ratchet gear comprises a rotating disc fixedly connected to the driving shaft, a pawl hinged to the rotating disc, a torsion spring installed at the hinged position of the pawl and the rotating disc, and a gear ring sleeved on the outside of the rotating disc and clamped with the pawl.

[0008] Further, the air exchange cylinder is provided with a convex ring formed integrally with the inner wall of the air exchange cylinder, the convex ring abuts against a moving cylinder nested in the mounting cylinder and in sliding connection with the mounting cylinder, the mounting cylinder is provided with a reset spring in abutment with the moving cylinder; the moving cylinder is provided with a radial plate, the radial plate is provided with a fixed dial plate, the fixed dial plate is provided with fixed dial balls distributed at equal intervals in a circle, the fixed dial plate is provided with a rotating dial plate fixedly connected with the passive shaft, the rotating dial plate is provided with rotating dial balls staggered with the fixed dial balls.

[0009] Preferably, the air exchange cylinder and the mounting cylinder are both hollow cylinders horizontally arranged with both ends open, and the air collecting cylinder is a conical cylinder horizontally arranged.

[0010] Preferably, the air collecting cylinder is nested in the mounting cylinder and in rotational connection with the inner wall of the mounting cylinder, the inner side of the air collecting cylinder is fixedly connected with a connecting frame, and the connecting frame is fixedly connected with the passive shaft.

[0011] Preferably, the spray pipe is a T-shaped pipe, including a horizontal part fixedly connected with the mounting disc and a vertical part perpendicularly connected with the horizontal part, and the vertical part is provided with spray holes linearly and equidistantly distributed.

[0012] Preferably, the diameter of the moving cylinder is smaller than the inner diameter of the air exchange cylinder and larger than the inner diameter of the convex ring.

[0013] Preferably, the mounting cylinder is provided with a horizontal sliding groove for the lateral sliding of the moving cylinder, and the radial plate is provided with a through hole for the passive shaft to penetrate through.

[0014] Preferably, the rotating dial ball and the fixed dial ball are both semicircular spherical bodies.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] (1) The present application is provided with a spray pipe and an air collecting cylinder linked with the bidirectional air blower, which collects the air flowing in the opposite direction and injects it into the spray pipe for spraying, periodically sprays the mesh holes of the air inlet dust screen, improves the stripping effect of the impurities adhered to the surface of the mesh holes, and achieves the purpose of efficient cleaning without manual disassembly and cleaning.

[0017] (2) The present application is provided with a one-way speed reduction gear set including a ratchet gear, which only drives the air collecting cylinder and the spray pipe to rotate when spraying in the opposite direction, does not affect the air extraction process, and achieves the purpose of energy saving.

[0018] (3) The present application is provided with a conical air collecting cylinder and a mounting cylinder with an annular air flow channel formed with the inner wall of the air exchange cylinder, which facilitates the collection and spraying of the air flowing in the opposite direction, improves the spraying effect.

[0019] (4) the present application is provided with the rotation dial and fixed dial connected with the movement cylinder along with the passive shaft rotation, in the reverse blowing process with the movement cylinder transverse reciprocating, periodic sealing of annular air passage, change the flow of air into the wind cylinder, realize the pulse change of air flow, realize pulse blowing, improve the effect of blowing cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the left side view of the present application perspective structure schematic diagram;

[0021] Figure 2 is the right side view of the present application perspective structure schematic diagram;

[0022] Figure 3 is the internal structure schematic diagram of the air cylinder in the present application;

[0023] Figure 4 is the cut structure schematic diagram of the present application;

[0024] Figure 5 is Figure 4 enlarged structure schematic diagram of A in the present application;

[0025] Figure 6 is the three-dimensional structure schematic diagram of the one-way reduction gear set in the present application;

[0026] Figure 7 is the three-dimensional structure schematic diagram of the ratchet gear in the present application;

[0027] Figure 8 is the three-dimensional structure schematic diagram of the installation cylinder in the present application;

[0028] Figure 9 is the three-dimensional structure schematic diagram of the wind collecting cylinder in the present application;

[0029] Figure 10 is the assembly structure schematic diagram of the nozzle in the present application;

[0030] Figure 11 is Figure 4 enlarged structure schematic diagram of B in the present application;

[0031] Figure 12 is the three-dimensional structure schematic diagram of the movement cylinder in the present application;

[0032] Figure 13 is the assembly structure schematic diagram of the rotation dial in the present application;

[0033] Figure 14 is the air flow schematic diagram of the present application.

[0034] Explanations of the reference numerals in the drawings: 1, air changing cylinder; 101, protruding ring; 2, air inlet dust screen; 3, bidirectional fan; 4, bidirectional impeller; 5, spray pipe; 6, mounting disc; 7, mounting cylinder; 8, hollow connecting shaft; 9, air collecting cylinder; 10, connecting frame; 11, driven shaft; 12, one-way reduction gear set; 13, driving shaft; 14, gear cylinder; 15, transmission gear; 16, ratchet gear; 1601, rotating disc; 1602, pawl; 1603, gear ring; 17, mounting shell; 18, moving cylinder; 1801, radial plate; 19, fixed dial plate; 1901, fixed dial ball; 20, rotating dial plate; 2001, rotating dial ball; 21, return spring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the protection scope of the present application.

[0036] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0038] Please refer to Figures 1-10In one embodiment of the present application, a self-cleaning fresh air ventilation device includes a ventilation cylinder 1 installed in and through a wall, a bidirectional fan 3 installed in the ventilation cylinder 1, a bidirectional impeller 4 installed near the outdoor side of the bidirectional fan 3, an air inlet dustproof net 2 installed near the outdoor side of the ventilation cylinder 1, a spray pipe 5 installed inside the ventilation cylinder 1 at the air inlet dustproof net 2, a plurality of linearly equidistant spray holes formed in the spray pipe 5, a mounting disc 6 fixedly connected with the spray pipe 5, a mounting cylinder 7 rotatably connected with the mounting disc 6, the mounting cylinder 7 fixedly connected with the inner wall of the ventilation cylinder 1 through a support rod, and an annular airflow channel formed between the outer wall of the mounting cylinder 7 and the inner wall of the ventilation cylinder 1; the mounting disc 6 is fixedly connected with a hollow connecting shaft 8 connected with the spray pipe 5, the hollow connecting shaft 8 is fixedly connected with a wind collecting cylinder 9, the inner side of the wind collecting cylinder 9 is fixedly connected with a driven shaft 11, the driven shaft 11 is connected with a one-way speed reduction gear set 12, the one-way speed reduction gear set 12 is connected with a driving shaft 13, and the driving shaft 13 is fixedly connected with the bidirectional impeller 4.

[0039] The one-way speed reduction gear set 12 includes a gear cylinder 14 fixedly connected with the driven shaft 11, a transmission gear 15 engaged with the inner side of the gear cylinder 14, and a ratchet gear 16 fixedly connected with the driving shaft 13 and engaged with the transmission gear 15.

[0040] Specifically, during cleaning, the bidirectional fan 3 is reversed to drive the bidirectional impeller 4 thereon to be reversed, and indoor air flow is discharged outward, at the same time, the bidirectional impeller 4 drives the driven shaft 11 to rotate through the driving shaft 13 and the one-way speed reduction gear set 12, the driven shaft 11 drives the wind collecting cylinder 9 to rotate, the wind collecting cylinder 9 drives the mounting disc 6 to rotate through the hollow connecting shaft 8, and the mounting disc 6 drives the spray pipe 5 to rotate in a circle.

[0041] At this time, the airflow is blown to the wind collecting cylinder 9, the airflow is injected into the rotating spray pipe 5 through the hollow connecting shaft 8, the airflow is sprayed from the spray pipe 5, the air inlet dustproof net 2 is rotated and sprayed, and the dust on the outer end surface of the air inlet dustproof net 2 is sprayed in the opposite direction, so that the air inlet dustproof net 2 is cleaned; since the spray pipe 5 rotates in a circle, the airflow sprayed from the spray hole of the spray pipe 5 completely covers the mesh hole of the air inlet dustproof net 2, and the airflow sprayed from the rotating spray pipe 5 periodically sprays multiple mesh holes, so that the dust adhered to the outer side of the mesh hole is more easily stripped by the airflow, and the cleaning effect is good, and manual disassembly and cleaning are not required.

[0042] In this embodiment, the ventilation cylinder 1 and the mounting cylinder 7 are both horizontally arranged hollow cylinders with both ends open.

[0043] Specifically, the airflow passes through the ventilation cylinder 1, and during reverse airflow cleaning, the main airflow enters the wind collecting cylinder 9 in the mounting cylinder 7, so that the airflow is concentrated.

[0044] In this embodiment, the wind collecting cylinder 9 is a horizontally arranged conical cylinder.

[0045] Specifically, it is convenient to collect and concentrate the airflow and inject it into the nozzle 5, thereby improving the spraying effect.

[0046] In this embodiment, the air collecting tube 9 is nested in the mounting tube 7 and rotatably connected to the inner wall of the mounting tube 7 . A connecting frame 10 is fixedly connected to the inner side of the air collecting tube 9 , and the connecting frame 10 is fixedly connected to the passive shaft 11 .

[0047] Specifically, the stability of the mounting plate 6 and the air collecting tube 9 during rotation is improved, while the airflow entering the air collecting tube 9 is not affected.

[0048] In this embodiment, the nozzle 5 is a T-shaped tube, including a horizontal portion fixedly connected to the mounting plate 6 and a vertical portion perpendicularly connected to the horizontal portion, and the vertical portion is provided with linearly equidistantly distributed nozzle holes.

[0049] Specifically, it is convenient to install the nozzle 5, and at the same time, the ejected air flow is periodically ejected to the mesh of the air inlet dustproof net 2 to ensure the cleaning effect.

[0050] In this embodiment, a mounting shell 17 is sleeved on the outer side of the one-way reduction gear set 12. The mounting shell 17 is fixedly connected to the inner wall of the ventilation cylinder 1 through a support rod, and the transmission gear 15 is mounted on the inner wall of the mounting shell 17 through a mounting shaft.

[0051] Specifically, the one-way reduction gear set 12 is protected to prevent corrosion caused by airflow contacting it.

[0052] In this embodiment, the diameter of the ratchet gear 16 is smaller than the diameter of the transmission gear 15 , and the diameter of the transmission gear 15 is smaller than the diameter of the gear cylinder 14 .

[0053] In this embodiment, the ratchet gear 16 includes a rotating disk 1601 fixedly connected to the driving shaft 13, and a pawl 1602 is hinged on the rotating disk 1601. A torsion spring is installed at the hinge between the pawl 1602 and the rotating disk 1601, and the pawl 1602 is clamped with a gear ring 1603 sleeved on the outside of the rotating disk 1601.

[0054] Specifically, one-way transmission is realized, and dust removal is performed only when exhausting, that is, when the air flow is reversed, and no cleaning operation is performed when air is inhaled, thereby saving electric energy.

[0055] See also Figures 11-14In another embodiment of the present application, the air changing cylinder 1 is provided with a protruding ring 101 which is integrally formed with the inner wall of the air changing cylinder 1, the protruding ring 101 abuts against a moving cylinder 18 which is nested in the mounting cylinder 7 and is in sliding connection with the mounting cylinder 7, the mounting cylinder 7 is provided with a reset spring 21 which abuts against the moving cylinder 18; the moving cylinder 18 is provided with a radial plate 1801, the radial plate 1801 is provided with a fixed dial plate 19, the fixed dial plate 19 is provided with fixed dial balls 1901 which are distributed in a circle at equal intervals, the fixed dial plate 19 is provided with a rotating dial plate 20 which is fixedly connected with the driven shaft 11, the rotating dial plate 20 is provided with rotating dial balls 2001 which are staggered with the fixed dial balls 1901.

[0056] Specifically, when cleaning, the driven shaft 11 drives the rotating dial plate 20 to rotate, the rotating dial plate 20 rotates and extrudes the fixed dial plate 19 on the moving cylinder 18, so that the moving cylinder 18 moves to the left to the end face of the protruding ring 101, the annular air flow channel is sealed, the air flow through the air collecting cylinder 9 is increased, the air flow sprayed by the spray pipe 5 is increased, with the rotation of the rotating dial plate 20, the moving cylinder 18 periodically contacts the protruding ring 101, the annular air flow channel is periodically closed, the periodic change of the sprayed air flow is realized, the pulse blowing is realized, and the cleaning effect is improved.

[0057] In this embodiment, the diameter of the moving cylinder 18 is smaller than the inner diameter of the air changing cylinder 1 and larger than the inner diameter of the protruding ring 101.

[0058] Specifically, the moving cylinder 18 is moved to the protruding ring 101, the annular air flow channel can be closed.

[0059] In this embodiment, the mounting cylinder 7 is provided with a horizontal sliding groove for the horizontal sliding of the moving cylinder 18, and the radial plate 1801 is provided with a through hole for the penetration of the driven shaft 11.

[0060] Specifically, it is ensured that the moving cylinder 18 moves horizontally under the action of the rotating dial plate 20 without self-rotation.

[0061] In this embodiment, the rotating dial balls 2001 and the fixed dial balls 1901 are both semicircular balls.

[0062] Specifically, when the passive shaft 11 rotates, the passive shaft 11 drives the rotating dial 20 to rotate, and the rotating dial 20 drives the rotating dial ball 2001 thereon to move in a circle, and the rotating dial ball 2001 rotates to contact and extrude the fixed dial ball 1901 on the fixed dial 19, in the extrusion process, the fixed dial 19 drives the moving cylinder 18 to move to the convex ring 101, and the return spring 21 is compressed; when the moving cylinder 18 moves to the convex ring 101, the rotating dial ball 2001 is relatively abutted with the fixed dial ball 1901, at this time, the annular airflow channel is closed; then, with the passive shaft 11 continuing to rotate, the rotating dial ball 2001 starts to be separated from the fixed dial ball 1901, at this time, since the return spring 21 is still in the compressed state, under the action of its own elastic force, the return spring 21 pushes the moving cylinder 18 to move to the side away from the convex ring 101, and the annular airflow channel is gradually opened, when the rotating dial ball 2001 is completely separated from the fixed dial ball 1901, the return spring 21 pushes the moving cylinder 18 to return to the initial position.

[0063] The above merely describes the preferred embodiments of the present application; however, the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the improved concept of the present application, should be covered in the protection scope of the present application, when equivalent replacement or change is made within the technical range disclosed by the present application.

Claims

1. A self-cleaning fresh air ventilation device, characterized in that The utility model provides a kind of ventilation cylinder (1) comprising being installed in wall and penetrating wall, bidirectional fan (3) is installed in ventilation cylinder (1), bidirectional fan (3) is close to outdoor side and is installed with bidirectional impeller (4), ventilation cylinder (1) is close to outdoor side and is installed with air inlet dust screen (2), ventilation cylinder (1) is located in air inlet dust screen (2) inside and is installed with spray pipe (5), spray pipe (5) is opened with linear equidistant distribution of spray hole, spray pipe (5) is fixedly connected with mounting disc (6), mounting disc (6) outside is sleeved with the rotationally connected mounting cylinder (7) of it, mounting cylinder (7) is fixedly connected with ventilation cylinder (1) inner wall by support rod, and annular airflow passage is formed between the outer wall of mounting cylinder (7) and the inner wall of ventilation cylinder (1);The hollow connecting shaft (8) connected with spray pipe (5) is fixedly connected with mounting disc (6), and the left end of hollow connecting shaft (8) is fixedly connected with wind collecting cylinder (9), the inside of wind collecting cylinder (9) is fixedly connected with passive shaft (11), passive shaft (11) is connected with one-way speed reducer gear set (12), one-way speed reducer gear set (12) is connected with driving shaft (13), and driving shaft (13) is fixedly connected with bidirectional impeller (4); The one-way speed reducer gear set (12) outside is sleeved with mounting shell (17), and mounting shell (17) is fixedly connected with the inner wall of ventilation cylinder (1) by support rod, and transmission gear (15) is installed on the inner wall of mounting shell (17) by mounting shaft;The gear cylinder (14) fixedly connected with passive shaft (11) is included in the one-way speed reducer gear set (12), and the inside of gear cylinder (14) is engaged with transmission gear (15), and transmission gear (15) is engaged with ratchet gear (16) fixedly connected with driving shaft (13);The ratchet gear (16) includes the rotating disc (1601) fixedly connected with driving shaft (13), the pawl (1602) is hinged on the rotating disc (1601), the torsional spring is installed on the hinged place of pawl (1602) and rotating disc (1601), and the gear ring (1603) outside rotating disc (1601) is sleeved in the clamping of pawl (1602); The ventilation cylinder (1) is located on the left side of mounting cylinder (7) and is provided with the convex ring (101) integrally formed with the inner wall thereof, the convex ring (101) is provided with the moving cylinder (18) nested in the mounting cylinder (7) and slidably connected with the mounting cylinder (7) on the right side, and the moving cylinder (18) is provided with the radial plate (1801), the fixed dial plate (19) is installed on the radial plate (1801), the fixed dial plate (19) is installed with the fixed dial ball (1901) distributed in a circle and equidistantly, the fixed dial plate (19) is clamped with the rotating dial plate (20) fixedly connected with passive shaft (11), and the rotating dial plate (20) is provided with the rotating dial ball (2001) staggeredly distributed with the fixed dial ball (1901).

2. The self-cleaning fresh air ventilation device according to claim 1, characterized in that The ventilation cylinder (1) and the mounting cylinder (7) are both horizontally arranged hollow cylinders with open ends, and the wind collecting cylinder (9) is a horizontally arranged conical cylinder.

3. The self-cleaning fresh air ventilation device according to claim 1, characterized in that The wind collecting cylinder (9) is nested in the mounting cylinder (7) and is rotationally connected with the inner wall of the mounting cylinder (7), the inner side of the wind collecting cylinder (9) is fixedly connected with a connecting frame (10), and the connecting frame (10) is fixedly connected with the driven shaft (11).

4. The self-cleaning fresh air ventilation device according to claim 1, characterized in that The spray pipe (5) is a T-shaped pipe, comprising a horizontal part fixedly connected with the mounting disc (6) and a vertical part perpendicularly connected with the horizontal part, and linear equidistant distribution of spray holes are formed on the vertical part.

5. The self-cleaning fresh air ventilation device according to claim 1, characterized in that, The diameter of the moving cylinder (18) is smaller than the inner diameter of the ventilation cylinder (1) and larger than the inner diameter of the convex ring (101).

6. The self-cleaning fresh air ventilation device according to claim 1, characterized in that The mounting cylinder (7) is provided with a horizontal sliding groove with a fan-shaped cross section for the transverse sliding of the moving cylinder (18), and a through hole is formed on the radial plate (1801) for the penetration of the driven shaft (11).

7. The self-cleaning fresh air ventilation device according to claim 1, characterized in that The rotating driving ball (2001) and the fixed driving ball (1901) are both semicircular spherical bodies.

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