Low-noise fan

Abstract

The utility model belongs to the technical field of low-noise fans, and particularly relates to a low-noise fan which comprises a shell, four limiting grooves are formed in the shell, an installation frame is installed in the shell in a sliding mode, limiting plates fixed to the installation frame are installed in the limiting grooves in an inserted mode, and a baffle is fixedly installed in the shell and located on one side of the installation frame. Four limiting grooves are formed in the outer shell, four arc-shaped grooves are formed in the outer shell, the four arc-shaped grooves are communicated with the four limiting grooves respectively, a protection cover is arranged in the outer shell and located on the other side of the installation frame, and fixing blocks fixed to the protection cover are installed in the arc-shaped grooves in a sliding mode. Therefore, a worker can conveniently and comprehensively clean dust on the fan blades and dust on the inner wall of the shell, the situation that large noise is generated when the whole device operates due to much dust is effectively avoided, the dust can be prevented from making contact with the motor, and it is prevented that the dust is attached to the motor to affect heat dissipation of the motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-noise fans, and particularly relates to a low-noise fan. Background Art

[0002] A fan is a machine that relies on the input mechanical energy to increase the gas pressure and pump the gas. It is a driven fluid machine.

[0003] After the existing fans are used for a long time, a lot of dust will adhere to the fan blades inside the fan, and there will also be more dust on the inner wall of the fan. This causes some noise when the fan operates. Although some fans can clean the fan blades, due to the obstruction of the fan blades, it is not convenient for the staff to clean the inner wall of the fan. At the same time, the drive motors in some fans are exposed, which easily causes a lot of dust to adhere to the drive motors, affecting the heat dissipation of the drive motors. In view of this, we propose a low-noise fan. Content of the Utility Model

[0004] The purpose of the utility model is to provide a low-noise fan to solve the problems raised in the above background art.

[0005] In view of this, the utility model provides a low-noise fan, including:

[0006] A housing, in which four limiting grooves are provided. An installation frame is slidably installed in the housing. A limiting plate fixed to the installation frame is inserted into the limiting groove. A baffle is fixedly installed on one side of the installation frame in the housing. Four arc-shaped grooves are provided in the housing, and the four arc-shaped grooves are respectively communicated with the four limiting grooves. A protective cover is provided on the other side of the installation frame in the housing. A fixing block fixed to the protective cover is slidably installed in the arc-shaped groove. A hand-tightening bolt is threadedly installed in the fixing block, and one end of the hand-tightening bolt penetrates through one side of the arc-shaped groove and extends to the outside;

[0007] A rotating shaft, which is rotatably installed in the installation frame. A fan blade is fixedly installed on the rotating shaft. A protective shell is fixedly installed on one side of the installation frame. A motor is fixedly installed in the protective shell. The output shaft of the motor penetrates through the protective shell and the installation frame and is coaxially connected with the rotating shaft. An installation frame is inserted into the protective shell, and a dust-proof net is fixedly installed in the installation frame;

[0008] A fixing component, which is located in the installation frame and is used to fix the installation frame.

[0009] In this technical solution, when it is necessary to clean the dust on the fan blades and the inner wall of the housing, the staff can manually rotate the hand-tightening bolt. Under the action of the thread, the hand-tightening bolt will rotate and displace outward within the fixing block and the housing until one end of the hand-tightening bolt completely displaces out of the fixing block and the housing. At this time, one of the hand-tightening bolts will be disassembled. Through the above operation, the remaining three hand-tightening bolts can be disassembled. Subsequently, the protective cover can be rotated so that the protective cover drives the four fixing blocks to slide within the corresponding arc-shaped grooves until the four fixing blocks rotate into the corresponding limiting grooves. Then, the protective cover can be pulled outward, and the protective cover will drive the four fixing blocks to slide outward within the corresponding limiting grooves, so that the protective cover can be disassembled. Subsequently, the staff can pull the mounting bracket, so that the mounting bracket drives the four limiting plates to move outward within the corresponding limiting grooves until the mounting bracket completely displaces out of the housing. Then, the staff can clean the dust on the fan blades and, moreover, can clean the dust on the inner wall of the housing, which is relatively convenient. After the cleaning is completed, the fixing and installation of the mounting bracket can be completed by performing the reverse operation of the above operation;

[0010] During daily use, under the action of the dust-proof net, it can prevent dust from contacting the motor and at the same time will not hinder the heat dissipation of the motor. When there is a lot of dust on the dust-proof net that needs to be cleaned, through the provided fixing component, the fixing component releases the fixation of the mounting frame, and the staff can pull the handle on the mounting frame and pull out the mounting frame from the protective housing to clean the dust on the dust-proof net. After the cleaning is completed, the staff inserts the mounting frame into the protective housing again, and the position of the mounting frame is fixed again through the provided fixing component to ensure that the motor will not contact the dust and avoid affecting the heat dissipation of the motor.

[0011] In the above technical solution, further, the fixing component includes:

[0012] Two sliding grooves, both of the two sliding grooves are opened in the mounting frame and are respectively located above and below the dust-proof net. A slider is slidably installed in the sliding groove. One end of the slider away from the dust-proof net penetrates through the sliding groove and the protective housing and extends to the outside. One end of the slider close to the dust-proof net is fixedly installed with a spring fixed to the inner wall of the sliding groove.

[0013] In this technical solution, the staff presses the two sliders by hand to make the two sliders approach each other. At this time, the spring will be compressed and contract until the sliders completely enter the sliding grooves. At this time, the mounting frame will be released from fixation.

[0014] In the above technical solution, further, the slider is slidably connected to the protective housing.

[0015] In this technical solution, it is ensured that the slider can slide within the protective housing.

[0016] In the above technical solution, further, the limiting plate is tightly welded to the mounting bracket, and the mounting bracket is in contact with the baffle.

[0017] In this technical solution, the structure between the limiting plate and the mounting bracket is ensured to be stable, and it is ensured that the baffle can fix the position of the mounting bracket.

[0018] In the above technical solution, further, the protective cover is in contact with the mounting bracket, the fixing block is slidably connected to the limiting groove, and the fixing block is tightly welded to the protective cover.

[0019] In this technical solution, it is ensured that the protective cover can limit the position of the mounting bracket, ensure that the fixing block can slide in the limiting groove, and ensure the structural stability between the fixing block and the protective cover.

[0020] In the above technical solution, further, the hand-tightening bolt is threadedly connected to the outer shell.

[0021] In this technical solution, under the action of the thread, it is ensured that the hand-tightening bolt can be threadedly installed into the outer shell.

[0022] In the above technical solution, further, the output shaft of the motor is rotatably connected to the protective shell and the mounting bracket, and the mounting frame is located on the side of the motor away from the mounting bracket.

[0023] In this technical solution, it is ensured that the motor can operate normally, ensure that the dust-proof net in the mounting frame can block dust, and prevent dust from contacting the motor.

[0024] The beneficial effects of the present utility model are as follows:

[0025] 1. For this low-noise fan, through the cooperation among the outer shell, protective cover, limiting groove, hand-tightening bolt, fixing block, mounting bracket, baffle, limiting plate and arc-shaped groove provided, it is ensured that the fan blade can be completely disassembled from the inside of the outer shell, so as to facilitate the staff to comprehensively clean the dust on the fan blade and the inner wall of the outer shell, thereby effectively avoiding the generation of excessive noise during the operation of the overall device due to excessive dust.

[0026] 2. For this low-noise fan, through the cooperation among the protective shell, mounting frame, dust-proof net and fixing components provided, it is ensured that dust can be prevented from contacting the motor and prevent dust from adhering to the motor and affecting the heat dissipation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0028] Figure 2 It is a schematic diagram of the structure inside the outer shell of the present utility model;

[0029] Figure 3 Schematic cross-sectional structure diagram of the outer shell in the present utility model;

[0030] Figure 4 Schematic structure diagram of the protective cover and the fixing block in the present utility model;

[0031] Figure 5 Schematic regional structure diagram of the mounting bracket in the present utility model;

[0032] Figure 6 Schematic structure diagram of the mounting bracket in the present utility model;

[0033] Figure 7 Schematic internal structure diagram of the protective shell in the present utility model;

[0034] Figure 8 Schematic internal structure diagram of the mounting frame in the present utility model;

[0035] Figure 9 For the present utility model Figure 8 Enlarged schematic structure diagram at position A.

[0036] The markings in the figure are indicated as:

[0037] 1. Outer shell; 2. Protective cover; 3. Limit groove; 4. Hand-tightening bolt; 5. Fixing block; 6. Mounting bracket; 7. Baffle; 8. Rotating shaft; 9. Fan blade; 10. Limit plate; 11. Protective shell; 12. Arc groove; 13. Dust-proof net; 14. Motor; 15. Slide block; 16. Slide groove; 17. Spring; 18. Mounting frame. Specific implementation manners

[0038] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0039] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0041] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0042] It should be noted that in this application, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0043] Embodiment 1:

[0044] Please refer to Figure 1 - Figure 9 as shown, this embodiment provides a low-noise fan, including:

[0045] A housing 1, in which four limiting grooves 3 are provided. An installation frame 6 is slidably installed in the housing 1. A limiting plate 10 fixed to the installation frame 6 is inserted and installed in the limiting groove 3. A baffle 7 is fixedly installed inside the housing 1 and on one side of the installation frame 6. Four arc-shaped grooves 12 are provided inside the housing 1, and the four arc-shaped grooves 12 are respectively communicated with the four limiting grooves 3. A protective cover 2 is provided inside the housing 1 and on the other side of the installation frame 6. A fixing block 5 fixed to the protective cover 2 is slidably installed in the arc-shaped groove 12. A hand-tightening bolt 4 is threadedly installed in the fixing block 5, and one end of the hand-tightening bolt 4 penetrates through one side of the arc-shaped groove 12 and extends to the outside;

[0046] A rotating shaft 8, which is rotatably installed in the installation frame 6. A fan blade 9 is fixedly installed on the rotating shaft 8. A protective shell 11 is fixedly installed on one side of the installation frame 6. A motor 14 is fixedly installed inside the protective shell 11. The output shaft of the motor 14 penetrates through the protective shell 11 and the installation frame 6 and is coaxially connected to the rotating shaft 8. An installation frame 18 is inserted and installed inside the protective shell 11, and a dust-proof net 13 is fixedly installed inside the installation frame 18;

[0047] A fixing component, which is located inside the installation frame 18 and is used to fix the installation frame 18.

[0048] Among them, when it is necessary to clean the dust on the fan blade 9 and the inner wall of the outer shell 1, the staff can manually rotate the hand-tightening bolt 4. Under the action of the thread, the hand-tightening bolt 4 will rotate and displace outward in the fixed block 5 and the outer shell 1 until one end of the hand-tightening bolt 4 completely displaces out of the fixed block 5 and the outer shell 1. At this time, one of the hand-tightening bolts 4 will be disassembled. Through the above operation, the remaining three hand-tightening bolts 4 can be disassembled. Subsequently, the protective cover 2 can be rotated so that the protective cover 2 drives the four fixed blocks 5 to slide in the corresponding arc-shaped grooves 12 until the four fixed blocks 5 rotate into the corresponding limit grooves 3. Then, the protective cover 2 can be pulled outward, and the protective cover 2 will drive the four fixed blocks 5 to slide outward in the corresponding limit grooves 3, so that the protective cover 2 can be disassembled. Subsequently, the staff can pull the mounting bracket 6 so that the mounting bracket 6 drives the four limiting plates 10 to move outward in the corresponding limit grooves 3 until the mounting bracket 6 completely displaces out of the outer shell 1. Then, the staff can clean the dust on the fan blade 9 and can also clean the dust on the inner wall of the outer shell 1, which is more convenient. After cleaning, the fixed installation of the mounting bracket 6 can be completed by performing the reverse operation through the above operation;

[0049] During daily use, under the action of the dust-proof net 13, it can prevent dust from contacting the motor 14 and will not prevent the heat dissipation of the motor 14. When the dust on the dust-proof net 13 is relatively much and needs to be cleaned, through the provided fixing component, the fixing of the installation frame 18 is released by the fixing component. The staff can pull the handle on the installation frame 18 and pull out the installation frame 18 from the protective shell 11 to clean the dust on the dust-proof net 13. After cleaning, the staff inserts the installation frame 18 into the protective shell 11 again, and the position of the installation frame 18 is fixed again by the provided fixing component to ensure that the motor 14 will not contact dust and avoid affecting the heat dissipation of the motor 14.

[0050] Embodiment 2:

[0051] This embodiment provides a low-noise fan. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The fixing component includes:

[0052] Two sliding grooves 16, both of the two sliding grooves 16 are opened in the installation frame 18 and are respectively located above and below the dust-proof net 13. A slider 15 is slidably installed in the sliding groove 16. One end of the slider 15 away from the dust-proof net 13 penetrates through the sliding groove 16 and the protective shell 11 and extends to the outside. One end of the slider 15 close to the dust-proof net 13 is fixedly installed with a spring 17 fixed to the inner wall of the sliding groove 16.

[0053] Among them, the staff presses two sliders 15 by hand to make the two sliders 15 approach each other. At this time, the spring 17 will be compressed and contract until the sliders 15 completely enter the sliding grooves 16. At this time, the mounting frame 18 will be released from fixation.

[0054] Embodiment 3:

[0055] This embodiment provides a low-noise fan. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the slider 15 is slidably connected to the protective shell 11.

[0056] Among them, it is ensured that the slider 15 can slide within the protective shell 11.

[0057] Embodiment 4:

[0058] This embodiment provides a low-noise fan. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the limiting plate 10 is tightly welded to the mounting bracket 6, and the mounting bracket 6 contacts the baffle 7.

[0059] Among them, it is ensured that the structure between the limiting plate 10 and the mounting bracket 6 is stable, and it is ensured that the baffle 7 can fix the position of the mounting bracket 6.

[0060] Embodiment 5:

[0061] This embodiment provides a low-noise fan. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the protective cover 2 contacts the mounting bracket 6, the fixing block 5 is slidably connected to the limiting groove 3, and the fixing block 5 is tightly welded to the protective cover 2.

[0062] Among them, it is ensured that the protective cover 2 can limit the position of the mounting bracket 6, ensure that the fixing block 5 can slide within the limiting groove 3, and ensure the structural stability between the fixing block 5 and the protective cover 2.

[0063] Embodiment 6:

[0064] This embodiment provides a low-noise fan. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the hand-tightening bolt 4 is threadedly connected to the housing 1.

[0065] Among them, under the action of the thread, it is ensured that the hand-tightening bolt 4 can be threadedly installed into the housing 1.

[0066] Embodiment 7:

[0067] This embodiment provides a low-noise fan. In addition to including the technical solutions of the above embodiments, it also has the following technical features: the output shaft of the motor 14 is rotatably connected to the protective shell 11 and the mounting bracket 6, and the mounting frame 18 is located on the side of the motor 14 away from the mounting bracket 6.

[0068] Among them, it is ensured that the motor 14 can operate normally, and the dust-proof net 13 in the mounting frame 18 can block dust to prevent the dust from contacting the motor 14.

[0069] It is worth noting that a handle is fixedly installed on one side of the mounting frame 18.

[0070] Working principle: When it is necessary to clean the dust on the fan blade 9 and the inner wall of the outer shell 1, the staff can manually rotate the hand-tightening bolt 4. Under the action of the thread, the hand-tightening bolt 4 will rotate and displace outward in the fixing block 5 and the outer shell 1 until one end of the hand-tightening bolt 4 completely displaces out of the fixing block 5 and the outer shell 1. At this time, one of the hand-tightening bolts 4 will be disassembled. Through the above operation, the remaining three hand-tightening bolts 4 can be disassembled. Subsequently, the protective cover 2 can be rotated so that the protective cover 2 drives the four fixing blocks 5 to slide in the corresponding arc-shaped grooves 12 until the four fixing blocks 5 rotate into the corresponding limiting grooves 3. Then, the protective cover 2 can be pulled outward, and the protective cover 2 will drive the four fixing blocks 5 to slide outward in the corresponding limiting grooves 3, so that the protective cover 2 can be disassembled. Subsequently, the staff can pull the mounting frame 6 so that the mounting frame 6 drives the four limiting plates 10 to move outward in the corresponding limiting grooves 3 until the mounting frame 6 completely displaces out of the outer shell 1. Then, the staff can clean the dust on the fan blade 9 and can also clean the dust on the inner wall of the outer shell 1, which is relatively convenient. After the cleaning is completed, the fixing installation of the mounting frame 6 can be completed by performing the reverse operation of the above operation. During the later use process, without dust, the noise generated during the operation of the overall device will be reduced;

[0071] During daily use, under the action of the dust-proof net 13, it can prevent dust from contacting the motor 14 and will not prevent the heat dissipation of the motor 14. When there is a lot of dust on the dust-proof net 13 and it needs to be cleaned, the staff can press two sliders 15 with their hands to make the two sliders 15 approach each other. At this time, the spring 17 will be compressed and contract until the sliders 15 completely enter the sliding grooves 16. At this time, the fixing of the mounting frame 18 will be released. The staff can pull the handle on the mounting frame 18 and pull the mounting frame 18 out of the protective shell 11 to clean the dust on the dust-proof net 13. After the cleaning is completed, the staff inserts the mounting frame 18 into the protective shell 11 again. Then, under the action of the rebounding force of the two springs 17, the two sliders 15 will move away from each other, so that the ends of the sliders 15 away from the dust-proof net 13 will insert into the protective shell 11 again, so that the position of the mounting frame 18 can be fixed again to ensure that the motor 14 will not contact the dust and avoid affecting the heat dissipation of the motor 14.

[0072] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the specific implementation manners described above. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A low-noise fan, characterized in that, Comprising: A housing (1) with four limiting grooves (3) formed therein. An installation frame (6) is slidably installed in the housing (1). A limiting plate (10) fixed to the installation frame (6) is inserted into the limiting groove (3). A baffle (7) is fixedly installed inside the housing (1) and on one side of the installation frame (6). Four arc-shaped grooves (12) are formed in the housing (1), and the four arc-shaped grooves (12) are respectively communicated with the four limiting grooves (3). A protective cover (2) is provided inside the housing (1) and on the other side of the installation frame (6). A fixing block (5) fixed to the protective cover (2) is slidably installed in the arc-shaped groove (12). A hand-tightening bolt (4) is threadedly installed in the fixing block (5), and one end of the hand-tightening bolt (4) penetrates through one side of the arc-shaped groove (12) and extends to the outside. A rotating shaft (8) is rotatably installed in the installation frame (6). A fan blade (9) is fixedly installed on the rotating shaft (8). A protective shell (11) is fixedly installed on one side of the installation frame (6). A motor (14) is fixedly installed inside the protective shell (11). The output shaft of the motor (14) penetrates through the protective shell (11) and the installation frame (6) and is coaxially connected to the rotating shaft (8). An installation frame (18) is inserted into the protective shell (11), and a dust-proof net (13) is fixedly installed inside the installation frame (18). A fixing component is located inside the installation frame (18) and is used to fix the installation frame (18).

2. The low-noise blower according to claim 1, characterized in that, The fixing component includes: Two sliding grooves (16) are both formed in the installation frame (18) and are respectively located above and below the dust-proof net (13). A slider (15) is slidably installed in the sliding groove (16). One end of the slider (15) away from the dust-proof net (13) penetrates through the sliding groove (16) and the protective shell (11) and extends to the outside. One end of the slider (15) close to the dust-proof net (13) is fixedly installed with a spring (17) fixed to the inner wall of the sliding groove (16).

3. The low-noise fan according to claim 2, wherein The slider (15) is slidably connected to the protective shell (11).

4. A low-noise fan according to claim 1, wherein, The limiting plate (10) is tightly welded to the installation frame (6), and the installation frame (6) contacts the baffle (7).

5. A low-noise fan according to claim 1, characterized in that, The protective cover (2) contacts the installation frame (6). The fixing block (5) is slidably connected to the limiting groove (3), and the fixing block (5) is tightly welded to the protective cover (2).

6. The low-noise blower according to claim 1, characterized in that, The hand-tightening bolt (4) is threadedly connected to the housing (1).

7. The low-noise blower according to claim 1, characterized in that, The output shaft of the motor (14) is rotatably connected to the protective shell (11) and the installation frame (6), and the installation frame (18) is located on the side of the motor (14) away from the installation frame (6).

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