CN224187804U - Ventilation fan with prevent flowing backward non return structure - Google Patents
Ventilation fan with prevent flowing backward non return structureInfo
- Publication number
- CN224187804U CN224187804U CN202521239553.2U CN202521239553U CN224187804U CN 224187804 U CN224187804 U CN 224187804U CN 202521239553 U CN202521239553 U CN 202521239553U CN 224187804 U CN224187804 U CN 224187804U
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- fixedly connected
- shell
- air outlet
- rotating
- fan
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Abstract
本实用新型公开了一种带有防逆流止回结构的通风风机，具体涉及通风风机领域，包括通风风机，所述通风风机包括外壳，所述外壳外表面固定连接有连接板，所述外壳内表面前侧壁转动连接有叶轮，所述外壳前端固定连接有支架，所述支架前侧固定连接有电机一，所述电机一输出端贯穿所述外壳与叶轮通过联轴器固定连接，所述外壳上侧开设有出风口。本实用新型所述的一种带有防逆流止回结构的通风风机，通过设计的止回结构，可以实现对出风口的开闭，阻止气体逆流，设计的调节组件，可以调节扇叶的开启程度，实现对风量、风压等的调节，灵活适应不同的通风场景和需求，同时在风机关闭时，可以将扇叶完全闭合，与止回组件共同作用，实现双重防逆流。
This utility model discloses a ventilation fan with an anti-backflow check structure, specifically relating to the field of ventilation fans. The ventilation fan includes a housing, a connecting plate fixedly connected to the outer surface of the housing, an impeller rotatably connected to the front side wall of the inner surface of the housing, a bracket fixedly connected to the front end of the housing, and a motor fixedly connected to the front side of the bracket. The output end of the motor passes through the housing and is fixedly connected to the impeller via a coupling. An air outlet is provided on the upper side of the housing. This utility model's ventilation fan with an anti-backflow check structure, through its designed check structure, can open and close the air outlet to prevent backflow of gas. The designed adjustment component can adjust the opening degree of the fan blades, realizing the adjustment of air volume, air pressure, etc., flexibly adapting to different ventilation scenarios and needs. Simultaneously, when the fan is turned off, the fan blades can be completely closed, working together with the check component to achieve double anti-backflow.
Description
Technical Field
The utility model relates to the field of ventilation fans, in particular to a ventilation fan with a backflow prevention check structure.
Background
The ventilation fan is equipment for realizing air circulation, ventilation and airflow direction control, and the motor drives the impeller to rotate so as to lead air to generate directional flow, thereby realizing the effects of air replacement, airflow control and the like, and being widely applied to a plurality of fields of industry, construction, environmental protection and the like;
In the application of a ventilation fan, it is an important requirement to prevent the backflow of air flow, for example, in a factory workshop, the backflow prevention check structure can prevent the backflow of harmful gas, ensure the safety and health of workers, and in the ventilation system of a building, the backflow prevention check can maintain the stability of indoor air environment, and avoid the introduction of outdoor dust, peculiar smell and the like.
Chinese patent publication No. CN211739323U discloses a kuppe backflow prevention non-return device, and the device can open when the fan is opened, closes when the fan stops, effectively prevents the backward flow of wind, including outer machine casing, the casing in be equipped with the fan, the casing in the fan outside on inlay circular air outlet, air outlet department fixed be equipped with the kuppe, the kuppe include first solid fixed ring, first solid fixed ring be circular structure, surface and air outlet internal surface fixed connection, first solid fixed ring central point put and be equipped with first fixed block, first fixed block be horizontal cylindric, first fixed block side and first solid fixed ring between be fixed and be equipped with a plurality of back sticks, the kuppe inboard be equipped with the non-return structure, above-mentioned equipment easy operation, convenient to use is applicable to the air conditioner of multiple model.
The device in the above document can prevent reverse flow and check the fan, but lacks functions such as air volume and wind pressure adjustment, and the performance of the device is single, and can not adapt to different use scenes, and can cause energy consumption waste or partial gas reverse flow.
Disclosure of utility model
The utility model mainly aims to provide a ventilation fan with a backflow prevention check structure, which can effectively solve the problems set forth in the above.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The utility model provides a ventilation fan with prevent flowing backward non return structure, includes ventilation fan, ventilation fan includes the shell, shell surface fixedly connected with connecting plate, shell internal surface front side wall rotates and is connected with the impeller, shell front end fixedly connected with support, support front side fixedly connected with motor one, motor one output runs through the shell passes through shaft coupling fixed connection with the impeller, the air outlet has been seted up to the shell upside, air outlet internal surface downside fixedly connected with non return structure, air outlet internal surface upside rotates and is connected with adjusting part, the shell upside passes through fixed shell fixedly connected with motor two.
Preferably, the check structure comprises a shell fixedly connected with the lower side of the inner surface of the air outlet, a vent is formed in the upper side of the shell, an arc baffle is fixedly connected with the lower side of the inner surface of the shell, two rotating plates are rotationally connected to the upper side of the inner surface of the shell, the two rotating plates are symmetrically arranged, fixing blocks are fixedly connected to the lower ends of the two rotating plates, and arc connecting rods are rotationally connected to the lower sides of the fixing blocks.
Preferably, both the rotating plates are adapted to the shape of the vent.
Preferably, the adjusting part comprises a round block fixedly connected to the upper side of the inner surface of the air outlet through a support plate, a plurality of blades distributed in a linear array are rotationally connected to the outer surface of the round block, a plurality of blades are mutually far away from one another, a plurality of rotating rods are fixedly connected to the outer surface of the air outlet, the rotating rods are rotationally connected with the air outlet, the rotating rods penetrate through the first connecting rods fixedly connected with the air outlet, the second connecting rods are rotationally connected to the lower side of the first connecting rods, the outer surface of the air outlet is rotationally connected with a rotating ring, and the second connecting rods are rotationally connected with the outer surface of the rotating ring.
Preferably, the second output end of the motor penetrates through the air outlet and is fixedly connected with one rotating plate which is close to the air outlet through a coupler.
Preferably, the outer surface of the rotating ring is fixedly connected with a rotating handle.
Preferably, the impeller is a stainless steel impeller.
Compared with the prior art, the utility model has the following beneficial effects:
1. This device is through the non return structure of design, can rotate through driving two rotor plates, realize opening and closing the air outlet, can prevent that gas from flowing backward, and two rotor plates can closely laminate when closing, have better leakproofness than single blade non return structure, reduce the leakage rate, simple structure easily installs simultaneously, and the maintenance of being convenient for occupies a small space, simplifies the inside overall arrangement of device, reduces production side cost.
2. The device can adjust the opening degree of the fan blade through the designed adjusting component, realize the adjustment of air quantity, air pressure and the like, flexibly adapt to different ventilation scenes and requirements, simultaneously can completely close the fan blade when the fan is closed, realize dual anti-backflow with the combined action of the non-return component, and promote the anti-backflow non-return effect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of a partial cross-sectional structure of the present utility model;
FIG. 3 is a schematic view of a ventilating fan structure according to the present utility model;
FIG. 4 is a schematic diagram of an explosion structure of the check structure of the present utility model;
fig. 5 is a schematic structural view of an adjusting assembly according to the present utility model.
In the figure, 1, a ventilation fan; 11, a shell, 12, a connecting plate, 13, an impeller, 14, a bracket, 15, a motor I, 16, an air outlet, 2, a non-return structure, 21, a shell, 22, a vent, 23, an arc baffle, 24, a rotating plate, 25, a fixed block, 26, an arc connecting rod, 3, an adjusting component, 31, a round block, 32, a blade, 33, a rotating rod, 34, a connecting rod I, 35, a connecting rod II, 36, a rotating ring and 4, a motor II.
Detailed Description
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
Example 1
As shown in fig. 1-3, a ventilation fan with anti-backflow check structure comprises a ventilation fan 1, the ventilation fan 1 comprises a housing 11, a connecting plate 12 is fixedly connected to the outer surface of the housing 11, an impeller 13 is rotatably connected to the front side wall of the inner surface of the housing 11, a support 14 is fixedly connected to the front end of the housing 11, a motor 15 is fixedly connected to the front side of the support 14, the output end of the motor 15 penetrates through the housing 11 and the impeller 13 and is fixedly connected with the impeller 13 through a coupling, an air outlet 16 is formed in the upper side of the housing 11, a check structure 2 is fixedly connected to the lower side of the inner surface of the air outlet 16, an adjusting assembly 3 is rotatably connected to the upper side of the inner surface of the air outlet 16, and a motor 4 is fixedly connected to the upper side of the housing 11 through a fixing shell.
In the implementation process, the impeller 13 is driven to rotate by the motor one 15, when the impeller 13 rotates, the inside of the housing 11 becomes a negative pressure state, gas is sucked into the housing 11 under the action of atmospheric pressure, and the gas moves along the radial direction under the pushing of the blades and finally is discharged through the air outlet 16.
As shown in fig. 4, the check structure 2 includes a casing 21 fixedly connected to the lower side of the inner surface of the air outlet 16, a ventilation opening 22 is formed on the upper side of the casing 21, an arc baffle 23 is fixedly connected to the lower side of the inner surface of the casing 21, two rotating plates 24 are rotatably connected to the upper side of the inner surface of the casing 21, the two rotating plates 24 are symmetrically arranged, fixed blocks 25 are fixedly connected to the lower ends of the two rotating plates 24, and an arc connecting rod 26 is rotatably connected to the lower sides of the two fixed blocks 25.
Specifically, the two pivoting plates 24 are adapted to the shape of the vent opening 22.
In the initial state, the two rotating plates 24 are perpendicular to the shell 21, and the air can flow to the air outlet 16 through the ventilation openings 22;
When the fan is turned off, the motor II 4 drives the rotating plate 24 fixedly connected with the fan to rotate, the rotating plate 24 drives the fixed block 25 to rotate when rotating, the arc-shaped connecting rod 26 rotates to drive the other rotating plate 24 to rotate, and after the two rotating plates 24 rotate for 90 degrees, the ventilation opening 22 can be covered, so that the air at the outer side cannot flow back through the air outlet 16, and the non-return effect is realized;
the two rotating plates 24 can be tightly attached when closed, so that the sealing performance is better than that of a single-blade check structure, and the leakage rate is reduced.
Example two
In this embodiment, on the basis of the first embodiment, the adjusting component 3 is additionally provided, so that the opening degree of the fan blade can be adjusted, and the air quantity, the air pressure and the like can be adjusted.
As shown in fig. 5, the adjusting component 3 includes a round block 31 fixedly connected to the upper side of the inner surface of the air outlet 16 through a support plate, a plurality of blades 32 distributed in a linear array are rotationally connected to the outer surface of the round block 31, one ends, away from each other, of the plurality of blades 32 are fixedly connected with rotating rods 33, the plurality of rotating rods 33 are rotationally connected with the air outlet 16, the plurality of rotating rods 33 penetrate through the air outlet 16 and are fixedly connected with first connecting rods 34, second connecting rods 35 are rotationally connected to the lower side of the first connecting rods 34, a rotating ring 36 is rotationally connected to the outer surface of the air outlet 16, and the second connecting rods 35 are rotationally connected with the outer surface of the rotating ring 36.
Specifically, the output end of the second motor 4 penetrates through the air outlet 16 and is fixedly connected with a rotating plate 24 which is close to each other through a coupler.
In the implementation process, the adjusting component 3 can adjust the air quantity and the air pressure when the ventilation fan 1 runs by adjusting the opening degree of the blades 32, an operator rotates the rotating ring 36, when the rotating ring 36 rotates, the plurality of connecting rods 35 are driven to rotate together, the connecting rods 35 drive the connecting rods 34 to rotate, and finally the connecting rods 34 drive the rotating rods 33 and the blades 32 to rotate, so that the opening degree of the blades 32 is adjusted;
When the ventilation fan 1 is closed, besides the backflow prevention and check through the check structure 2, the backflow of gas can be prevented by closing all the blades 32, so that double protection is realized, and the backflow prevention efficiency of gas is improved.
Specifically, the outer surface of the rotating ring 36 is fixedly connected with a rotating handle, an operator can conveniently push the rotating ring 36 to rotate through the rotating handle, and in a specific use process, the electric push rod, the concentration sensor, the controller and the like can be rotatably connected to the upper end of the shell 11, so that automatic adjustment of the adjusting assembly 3 is realized.
Specifically, the impeller 13 is a stainless steel impeller, the stainless steel impeller has better corrosion resistance, high surface smoothness, high pressure resistance and enough toughness, when the non-return assembly 2 is closed, the impeller 13 can bear instant reverse airflow impact, and the good toughness can avoid blade breakage.
When the ventilation fan 1 is closed, the blades 32 can be completely closed to act together with the check assembly 2, so that double backflow prevention is realized, and the backflow prevention check effect is improved.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. A ventilation fan with an anti-backflow check structure comprises a ventilation fan (1) and is characterized in that the ventilation fan (1) comprises a shell (11), a connecting plate (12) is fixedly connected to the outer surface of the shell (11), an impeller (13) is rotationally connected to the front side wall of the inner surface of the shell (11), a support (14) is fixedly connected to the front end of the shell (11), a motor I (15) is fixedly connected to the front side of the support (14), the output end of the motor I (15) penetrates through the shell (11) and the impeller (13) and is fixedly connected with the impeller (13) through a coupler, an air outlet (16) is formed in the upper side of the shell (11), an adjusting component (3) is rotationally connected to the lower side of the inner surface of the air outlet (16), and a motor II (4) is fixedly connected to the upper side of the shell (11) through a fixing shell.
2. The ventilating fan with the backflow prevention check structure according to claim 1, wherein the check structure (2) comprises a shell (21) fixedly connected to the lower side of the inner surface of the air outlet (16), a vent (22) is formed in the upper side of the shell (21), an arc baffle (23) is fixedly connected to the lower side of the inner surface of the shell (21), two rotating plates (24) are rotatably connected to the upper side of the inner surface of the shell (21), the two rotating plates (24) are symmetrically arranged, fixing blocks (25) are fixedly connected to the lower ends of the two rotating plates (24), and arc connecting rods (26) are rotatably connected to the lower sides of the two fixing blocks (25).
3. A ventilating fan with a reverse flow preventing and stopping structure according to claim 2, wherein the two rotating plates (24) are adapted to the shape of the ventilating opening (22).
4. The ventilating fan with anti-backflow check structure according to claim 1, wherein the adjusting component (3) comprises a round block (31) fixedly connected to the upper side of the inner surface of the air outlet (16) through a support plate, a plurality of blades (32) distributed in a linear array are rotationally connected to the outer surface of the round block (31), a plurality of rotating rods (33) are fixedly connected to one ends, far away from each other, of the blades (32), the rotating rods (33) are rotationally connected to the air outlet (16), a plurality of rotating rods (33) penetrate through the air outlet (16) and are fixedly connected with a first connecting rod (34), a second connecting rod (35) is rotationally connected to the lower side of the first connecting rod (34), a rotating ring (36) is rotationally connected to the outer surface of the air outlet (16), and the second connecting rods (35) are rotationally connected to the outer surface of the rotating ring (36).
5. A ventilating fan with a backflow prevention check structure according to claim 2, wherein the output end of the second motor (4) penetrates through the air outlet (16) and is fixedly connected with one rotating plate (24) close to the air outlet through a coupler.
6. A ventilating fan with a backflow prevention check structure according to claim 4, wherein a rotating handle is fixedly connected to the outer surface of the rotating ring (36).
7. A ventilating fan with a backflow prevention check structure as set forth in claim 1, wherein the impeller (13) is a stainless steel impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521239553.2U CN224187804U (en) | 2025-06-17 | 2025-06-17 | Ventilation fan with prevent flowing backward non return structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521239553.2U CN224187804U (en) | 2025-06-17 | 2025-06-17 | Ventilation fan with prevent flowing backward non return structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN224187804U true CN224187804U (en) | 2026-05-01 |
Family
ID=99584689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202521239553.2U Active CN224187804U (en) | 2025-06-17 | 2025-06-17 | Ventilation fan with prevent flowing backward non return structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN224187804U (en) |
-
2025
- 2025-06-17 CN CN202521239553.2U patent/CN224187804U/en active Active
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