Low-noise and large-air-volume fan

Abstract

The utility model discloses a fan with low noise and large air volume, which relates to the technical field of industrial fans, and comprises a fan main body and a shell, a noise reduction structure for reducing noise of the fan main body is arranged in an inner cavity of the shell, and the noise reduction structure comprises a sound absorption plate and a mounting plate. By means of the arrangement mode that the noise reduction structure, the protection plate, the installation structure and the limiting structure are matched, noise generated when the fan body is used can be reduced, noise pollution can be reduced, the environmental protection property of the fan body in use is improved, the fan body is prevented from being directly collided under protection of the protection plate, and the service life of the fan body is prolonged. The use safety of the fan body is improved, meanwhile, the position of the noise reduction structure can be reinforced while the protection plate is installed, the time and structure are shortened for disassembly and assembly of the noise reduction structure and the protection plate, and the flexibility and efficiency of disassembly and assembly of the noise reduction structure and the protection plate are effectively enhanced; and the practicability of the noise reduction structure and the protection plate is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial fans, in particular to a fan with low noise and large air volume. Background Art

[0002] Industrial fans are devices that can generate large air volumes, promote air circulation, and increase air flow. They are widely used in large spaces such as waiting rooms and exhibition halls. In order to prevent the fan blades from being directly exposed to the outside and causing collisions during use, existing industrial fans have guardrails installed on the front of the industrial fan casing through bolts, thereby providing safety protection for the fan without affecting the wind flow.

[0003] When the existing industrial fans are in use, due to the characteristics of fast rotation speed and large blades, they are prone to generate loud noise while the blades are rotating. The continuous emission of noise is likely to cause noise pollution, affect the external environment, and reduce the comfort of the external environment, which is also likely to affect the use of the fan and reduce the environmental friendliness of the fan. Therefore, in order to solve the above problems, a low-noise, large-air-volume fan is proposed. Utility Model Content

[0004] The utility model aims to provide a fan with low noise and large air volume to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a low-noise, high-air-volume fan, comprising a fan body and a housing, wherein the fan body is rotatably disposed in an inner cavity of the housing, and the inner cavity of the housing is provided with a noise reduction structure for reducing the noise of the fan body, wherein the noise reduction structure comprises:

[0006] A sound absorbing panel, the sound absorbing panel is fixedly arranged in the inner cavity of the shell and covers the fan body, and the sound absorbing panel is used to reduce the noise of the fan body during use;

[0007] A mounting plate is fixedly arranged on the outer wall of the sound absorbing board, and is used to limit the position of the sound absorbing board in the inner cavity of the shell.

[0008] Preferably, the noise reduction structure also includes a plurality of guide strips and a plurality of guide grooves, the plurality of guide grooves are symmetrically opened on the inner wall of the shell, the plurality of guide strips are symmetrically fixed on the outer wall of the mounting plate, and the plurality of guide strips are respectively slidably interlaced with the inner cavities of the plurality of guide grooves.

[0009] Preferably, a protective plate is fixedly provided on the front side of the housing, and the protective plate is composed of a plurality of rectangular plates and a plurality of arc plate components, and the plurality of arc plates are respectively fixedly provided between the plurality of rectangular plates, and the plurality of rectangular plates are perpendicular to each other, and the protective plate is used to prevent external debris from colliding with the fan body.

[0010] Preferably, a plurality of mounting structures are provided between the protective plate and the housing, and the mounting structures include:

[0011] Two mounting grooves, the two mounting grooves are respectively opened on the front side of the protective plate and the housing, and the inner cavities of the two mounting grooves are connected;

[0012] The mounting rod is movably arranged in the inner cavity of the mounting groove, and one end of the mounting rod is provided with a positioning component for limiting the position of the mounting rod.

[0013] Preferably, the mounting structure also includes a movable groove and a limit block, the movable groove is opened on the inner wall of one of the mounting grooves, and the inner cavity of the movable groove is connected with the inner cavity of one of the mounting grooves, the limit block is fixedly arranged on the outer wall of the mounting rod, and the limit block is movably interspersed with the inner cavity of the movable groove and the mounting groove.

[0014] Preferably, the positioning assembly includes a positioning block and a positioning slot, the positioning slot is provided on the front side of the protective plate, the positioning block is fixedly arranged on the end face of the mounting rod facing the protective plate, and the positioning block is inserted and engaged with the inner cavity of the positioning slot.

[0015] Preferably, a limiting structure is provided between the guide bar and the housing, and the limiting structure comprises:

[0016] A through slot, the through slot being formed on the outer wall of the housing, the inner cavity of the through slot being connected to the inner cavity of the guide slot;

[0017] A limit rod is movably inserted into the inner cavity of the through slot, the bottom end of the limit rod is semicircular, and the limit rod is used to limit the position of the guide bar.

[0018] Preferably, the limiting structure further includes a clamping slot and a clamping plate, wherein the clamping slot is provided on the outer wall of the guide bar, and the clamping plate is fixedly arranged on the top end of the limiting rod, and the clamping plate is clamped with the inner cavity of the clamping slot.

[0019] Technical effects and advantages of the utility model:

[0020] The utility model uses the noise reduction structure, the protective plate, the installation structure and the limit structure to coordinate the setting mode, so that the noise generated by the fan body when in use can be reduced, thereby reducing noise pollution and improving the environmental protection of the fan body. Under the protection of the protective plate, the fan body is prevented from being directly hit, thereby improving the safety of the fan body. At the same time, the position of the noise reduction structure can be reinforced when the protective plate is installed, which shortens the time and structure for disassembly and assembly of the noise reduction structure and the protective plate, effectively enhancing the flexibility and efficiency of disassembly and assembly of the noise reduction structure and the protective plate, thereby also improving the practicality of the noise reduction structure and the protective plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the noise reduction structure of the utility model.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0024] Figure 4 For this utility model Figure 3 A is an enlarged structural diagram of FIG.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the installation slot of the utility model.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the movable groove of the utility model.

[0027] In the figure: 1. fan body; 2. casing; 3. protective plate; 4. noise reduction structure; 401. sound absorbing board; 402. mounting plate; 403. guide strip; 404. guide groove; 5. mounting structure; 501. mounting rod; 502. mounting groove; 503. movable groove; 504. limit block; 505. positioning block; 506. positioning groove; 6. limit structure; 601. limit rod; 602. slot; 603. card plate; 604. card groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figure 1-6 A low-noise, high-air-volume fan shown in the figure includes a fan body 1 and a shell 2. The fan body 1 is rotatably arranged in the inner cavity of the shell 2. The inner cavity of the shell 2 is provided with a noise reduction structure 4 for reducing the noise of the fan body 1. The noise reduction structure 4 includes a sound absorbing panel 401 and a mounting plate 402. The sound absorbing panel 401 is fixedly arranged in the inner cavity of the shell 2 and covers the fan body 1. The sound absorbing panel 401 is used to reduce the noise of the fan body 1 during use. The mounting plate 402 is fixedly arranged on the outer wall of the sound absorbing panel 401. The mounting plate 402 is used to limit the position of the sound absorbing panel 401 in the inner cavity of the shell 2.

[0030] like Figure 1 and Figure 2As shown in the figure, the fan body 1 is used by being installed in the inner cavity of the outer shell 2, and the outer shell 2 is used to support the fan body 1. The sound absorbing panel 401 and the mounting plate 402 are both in annular shape, so that the sound absorbing panel 401 can cover and protect the fan body 1 from multiple sides, thereby improving the noise reduction effect of the fan body 1. The sound absorbing panel 401 is stably installed on the inner wall of the outer shell 2 through the mounting plate 402, and covers the fan body 1. When the fan body 1 is rotated and used, the sound generated by the rotation of the fan blades will be processed by the sound absorbing panel 401 for noise reduction, thereby reducing the noise pollution of the fan body 1, thereby improving the environmental friendliness of the use of the fan body 1.

[0031] The noise reduction structure 4 also includes a plurality of guide strips 403 and a plurality of guide grooves 404 . The plurality of guide grooves 404 are symmetrically arranged on the inner wall of the outer shell 2 . The plurality of guide strips 403 are symmetrically fixedly arranged on the outer wall of the mounting plate 402 . The plurality of guide strips 403 are slidably interlaced with the inner cavities of the plurality of guide grooves 404 .

[0032] like Figure 2 and Figure 3 As shown in the figure, the positions of the multiple guide strips 403 are distributed perpendicularly to each other, the positions of the multiple guide grooves 404 are consistent with the distribution of the multiple guide strips 403, and the inner cavity of the guide groove 404 is connected to the front of the shell 2, so that the guide strip 403 can move from the front of the shell 2 to the inner cavity of the shell 2, so that the guide strip 403 can slide and intersect with the inner cavity of the guide groove 404, so as to drive the mounting plate 402 and the sound absorbing plate 401 to be installed on the inner wall of the shell 2. Under the interlaced connection of the guide strip 403 and the guide groove 404, the stability of the mounting plate 402 and the sound absorbing plate 401 on the inner wall of the shell 2 is guaranteed, and the position shaking phenomenon of the mounting plate 402 and the sound absorbing plate 401 due to the airflow generated by the fan body 1 during use is avoided, thereby effectively improving the safety of the use of the sound absorbing plate 401 and the mounting plate 402.

[0033] A protective plate 3 is fixedly provided on the front of the housing 2. The protective plate 3 is composed of multiple rectangular plates and multiple arc plate components. The multiple arc plates are respectively fixedly provided between the multiple rectangular plates. The multiple rectangular plates are perpendicular to each other. The protective plate 3 is used to prevent external debris from colliding with the fan body 1.

[0034] like Figure 1 As shown in the figure, the protective plate 3 is installed on the front side of the housing 2, so that when the fan body 1 is used in the housing 2, external debris can be prevented from entering the housing 2 and colliding with the fan body 1, which provides safety for the use of the fan body 1 in the housing 2. At the same time, the setting of the arc plate in the protective plate 3 can reduce wind resistance, increase the air volume used by the rotation of the fan body 1, and enhance the practicality of the fan body 1.

[0035] A plurality of mounting structures 5 are arranged between the protective plate 3 and the outer shell 2, and the mounting structures 5 include two mounting grooves 502 and a mounting rod 501. The two mounting grooves 502 are respectively opened on the front of the protective plate 3 and the outer shell 2, and the inner cavities of the two mounting grooves 502 are connected. The mounting rod 501 is movably arranged in the inner cavity of the mounting groove 502, and a positioning component for limiting the position of the mounting rod 501 is arranged at one end of the mounting rod 501.

[0036] like Figure 3 and Figure 5 As shown in the figure, the shape of the mounting groove 502 is adapted to the shape of the mounting rod 501, and the inner cavity of the mounting groove 502 opened on the outer shell 2 and the protective plate 3 connects the end surfaces of the outer shell 2 and the protective plate 3 that are separated from each other, so that one end of the mounting rod 501 can be inserted along the inner cavity of the mounting groove 502 to the back of the outer shell 2, thereby being able to stably install the protective plate 3 on the front side of the outer shell 2. At the same time, one end of the mounting rod 501 is in an arc shape, and the other end of the mounting rod 501 is in a T-shape. The T-shaped setting makes it easy for one end of the mounting rod 501 to squeeze the front side of the protective plate 3 after the other end is inserted, thereby ensuring the stability of its own position. The rapid insertion of the mounting rod 501 and the inner cavity of the mounting groove 502 provides convenience for the installation of the protective plate 3 on the front side of the outer shell 2, and also provides flexibility for the disassembly of the protective plate 3.

[0037] The mounting structure 5 also includes a movable groove 503 and a limit block 504. The movable groove 503 is opened on the inner wall of one of the mounting grooves 502, and the inner cavity of the movable groove 503 is connected with the inner cavity of one of the mounting grooves 502. The limit block 504 is fixedly arranged on the outer wall of the mounting rod 501, and the limit block 504 is movably interlaced with the inner cavities of the movable groove 503 and the mounting groove 502.

[0038] like Figure 3 and Figure 6 As shown in the figure, the opening of the movable groove 503, in conjunction with the setting of the limit block 504, enables the installation rod 501 to be inserted along the installation groove 502. After the limit block 504 moves to the inner cavity range of the movable groove 503, the installation rod 501 can be rotated to drive the limit block 504 to rotate along the inner cavity of the movable groove 503, thereby providing support for the subsequent use of the positioning component. At the same time, after the limit block 504 rotates in the movable groove 503, the lateral position of the installation rod 501 can also be limited, so that the installation rod 501 cannot be directly withdrawn from the installation groove 502, thereby ensuring the stability of the connection between the installation rod 501 and the installation groove 502, thereby strengthening the firmness of the installation of the protective plate 3.

[0039] The positioning assembly includes a positioning block 505 and a positioning groove 506 . The positioning groove 506 is provided on the front side of the protective plate 3 . The positioning block 505 is fixedly arranged on the end face of the mounting rod 501 facing the protective plate 3 . The positioning block 505 is interlaced and engaged with the inner cavity of the positioning groove 506 .

[0040] like Figure 3 As shown in the figure, the inner cavities of the positioning block 505 and the positioning groove 506 are fixed by interlacing and extruding, and the interlacing of the positioning block 505 and the positioning groove 506 is achieved after the installation rod 501 drives the limit block 504 to rotate along the inner cavity of the movable groove 503, so that the positions of the positioning block 505 and the positioning groove 506 can be aligned one by one, and then the movable groove 503 leaves space for the limit block 504 to move horizontally, so that the positioning block 505 can be extruded and fixed to the inner cavity of the positioning groove 506, thereby ensuring that the installation rod 501 The stability of the position of the limit block 504 after rotation can ensure the effectiveness of the mounting rod 501 in fixing the position of the protective plate 3, effectively improving the safety of the fixing of the position of the protective plate 3. When the protective plate 3 needs to be removed, the positioning block 505 can be separated from the positioning groove 506 first, and then the mounting rod 501 can be rotated in the opposite direction to make the limit block 504 rotate in the opposite direction along the inner cavity of the movable groove 503, and finally the mounting rod 501 can be pulled out along the mounting groove 502, so as to release the restriction on the position of the protective plate 3.

[0041] A limiting structure 6 is arranged between the guide bar 403 and the shell 2, and the limiting structure 6 includes a through slot 602 and a limiting rod 601. The through slot 602 is opened on the outer wall of the shell 2, and the inner cavity of the through slot 602 is connected with the inner cavity of the guide slot 404. The limiting rod 601 is movably inserted in the inner cavity of the through slot 602. The bottom end of the limiting rod 601 is semicircular. The limiting rod 601 is used to limit the position of the guide bar 403. The limiting structure 6 also includes a card slot 604 and a card plate 603. The card slot 604 is opened on the outer wall of the guide bar 403, and the card plate 603 is fixedly arranged on the top of the limiting rod 601, and the card plate 603 is carded with the inner cavity of the card slot 604.

[0042] like Figure 3 and Figure 4As shown in the figure, the through slot 602 is used for the movement of the limiting rod 601. The bottom end of the limiting rod 601 is squeezed by one end of the mounting rod 501, so that the arc shape of one end of the mounting rod 501 and the bottom end of the limiting rod 601 can be used to make the limiting rod 601 move upward along the inner cavity of the through slot 602 under force, and then drive the clamping plate 603 to move upward along the inner cavity of the clamping slot 604. The clamping plate 603 is any one of elastic rubber or elastic plastic, has good elastic performance, and can produce elastic deformation when squeezed. The cross-sectional shape of the clamping slot 604 is wavy, so that when the clamping plate 603 is not squeezed, it is located at the bottom end of the inner cavity of the clamping slot 604, and when the clamping plate 603 is squeezed by the limiting rod 601, it will move to the top of the inner cavity of the clamping slot 604 The end can be moved so that it can be snap-fitted with the top of the inner cavity of the slot 604, thereby limiting the position of the guide strip 403, strengthening the connection between the guide strip 403 and the outer shell 2, and further improving the stability of the installation and use of the mounting plate 402 and the sound absorbing plate 401. At the same time, in the process of installing the guide strip 403, there is no need to use too many tools and mechanisms, only the installation of the protective plate 3 in conjunction with the mounting rod 501 is required, thereby making the installation of the protective plate 3 and the installation of the noise reduction structure 4 interconnected, reducing the steps and structures for the separate installation of the protective plate 3 and the noise reduction structure 4, improving the convenience and efficiency of the disassembly and assembly of the protective plate 3 and the noise reduction structure 4, and thus enhancing the practicality of the noise reduction structure 4 and the protective plate 3.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-noise, high-air-volume fan, comprising a fan body (1) and a housing (2), wherein the fan body (1) is rotatably disposed in an inner cavity of the housing (2), and characterized in that: The inner cavity of the housing (2) is provided with a noise reduction structure (4) for reducing the noise of the fan body (1), and the noise reduction structure (4) comprises: A sound absorbing plate (401), the sound absorbing plate (401) being fixedly arranged in the inner cavity of the outer shell (2) and covering the fan body (1), the sound absorbing plate (401) being used to reduce the noise of the fan body (1) during use; A mounting plate (402), wherein the mounting plate (402) is fixedly arranged on the outer wall of the sound absorbing plate (401), and the mounting plate (402) is used to limit the position of the sound absorbing plate (401) in the inner cavity of the shell (2).

2. A low-noise, high-air-volume fan according to claim 1, characterized in that: The noise reduction structure (4) further comprises a plurality of guide strips (403) and a plurality of guide grooves (404); the plurality of guide grooves (404) are symmetrically arranged on the inner wall of the outer shell (2); the plurality of guide strips (403) are symmetrically fixedly arranged on the outer wall of the mounting plate (402); and the plurality of guide strips (403) are respectively slidably interlaced with the inner cavities of the plurality of guide grooves (404).

3. A low-noise, high-air-volume fan according to claim 1, characterized in that: A protective plate (3) is fixedly arranged on the front of the housing (2); the protective plate (3) is composed of a plurality of rectangular plates and a plurality of arc-shaped plate components; the plurality of arc-shaped plates are respectively fixedly arranged between the plurality of rectangular plates; the plurality of rectangular plates are perpendicular to each other; the protective plate (3) is used to prevent external debris from colliding with the fan body (1).

4. A low-noise, high-air-volume fan according to claim 3, characterized in that: A plurality of mounting structures (5) are provided between the protective plate (3) and the housing (2), and the mounting structures (5) include: Two installation grooves (502), the two installation grooves (502) are respectively opened on the front side of the protection plate (3) and the housing (2), and the inner cavities of the two installation grooves (502) are connected; A mounting rod (501) is movably arranged in the inner cavity of the mounting groove (502), and a positioning component for limiting the position of the mounting rod (501) is arranged at one end of the mounting rod (501).

5. A low-noise, high-air-volume fan according to claim 4, characterized in that: The mounting structure (5) further comprises a movable groove (503) and a limit block (504); the movable groove (503) is provided on the inner wall of one of the mounting grooves (502), and the inner cavity of the movable groove (503) is communicated with the inner cavity of one of the mounting grooves (502); the limit block (504) is fixedly arranged on the outer wall of the mounting rod (501), and the limit block (504) is movably interlaced with the inner cavities of the movable groove (503) and the mounting groove (502).

6. A low-noise, high-air-volume fan according to claim 4, characterized in that: The positioning assembly comprises a positioning block (505) and a positioning groove (506); the positioning groove (506) is provided on the front surface of the protective plate (3); the positioning block (505) is fixedly arranged on the end surface of the mounting rod (501) facing the protective plate (3); the positioning block (505) is inserted and engaged with the inner cavity of the positioning groove (506).

7. A low-noise, high-air-volume fan according to claim 2, characterized in that: A limiting structure (6) is provided between the guide strip (403) and the housing (2), and the limiting structure (6) comprises: A through-slot (602), wherein the through-slot (602) is formed on the outer wall of the housing (2), and the inner cavity of the through-slot (602) is connected to the inner cavity of the guide groove (404); A limiting rod (601) is movably inserted into the inner cavity of the insertion slot (602), the bottom end of the limiting rod (601) is semicircular, and the limiting rod (601) is used to limit the position of the guide bar (403).

8. A low-noise, high-air-volume fan according to claim 7, characterized in that: The limiting structure (6) further comprises a clamping slot (604) and a clamping plate (603); the clamping slot (604) is provided on the outer wall of the guide bar (403); the clamping plate (603) is fixedly arranged on the top end of the limiting rod (601); and the clamping plate (603) is clamped with the inner cavity of the clamping slot (604).

Images