An easy-to-maintain cooling fan

Abstract

This utility model discloses a cooling fan that is easy to maintain, including a housing, a protective cover fixed to one end of the housing, a motor inside the housing, and fan blades connected to the drive shaft end of the motor. The motor is fixed to the protective cover, and the protective cover is fixed to the upper part of the housing with screws. By fixing the motor to the protective cover, when maintenance of the motor and fan blades is required, the protective cover can be separated from the housing, and the fan blades and motor can be detached from the housing by hoisting the protective cover with a hoisting device, making maintenance convenient.

Description

Technical Field

[0001] This utility model relates to the field of cooling fan technology, and more specifically, to a cooling fan that is easy to maintain. Background Technology

[0002] Cooling fans are typically installed at the top of cooling towers to cool them. During operation, the impellers of these fans easily accumulate a lot of dirt, and the performance of the motors deteriorates over time, affecting the cooling effect. Therefore, regular maintenance is necessary. Currently, maintenance requires removing the entire fan from the cooling tower and then separately removing the motor and impeller. However, this frequent disassembly and reassembly of the fan casing not only affects the fixation between the fan and the cooling tower, causing the fan to loosen and posing a safety hazard, but also makes disassembly and reassembly inconvenient and cumbersome. Therefore, improvements are urgently needed. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a cooling fan that is easy to maintain. By fixing the motor to the protective cover, when it is necessary to maintain the motor and fan blades, it is only necessary to separate the protective cover from the housing and lift the protective cover with a hoisting device to remove the fan blades and motor from the housing, which makes maintenance convenient.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a cooling fan that is easy to maintain, comprising a housing, a protective cover and a second protective cover fixed at one end of the housing, a motor provided inside the housing, a fan blade connected to the drive shaft end of the motor, the motor being fixed to the protective cover, and the protective cover being fixed to the upper part of the housing by screws.

[0005] Furthermore, the protective cover includes an annular sleeve and an annular plate, which are connected by a grid member. The motor is fixed inside the annular sleeve, and the lower part of the annular plate abuts against the upper part of the housing.

[0006] Furthermore, a support frame is provided below the annular sleeve, and the support frame is connected to the annular sleeve through multiple connecting plates. The lower part of the motor abuts against the upper part of the support frame, and the drive shaft of the motor passes through the lower part of the support frame.

[0007] Furthermore, the support frame is fixed to the lower part of the motor with screws, and the upper part of the annular sleeve is provided with multiple protruding plates, which are fixed to the side of the motor with screws.

[0008] Furthermore, a protruding plate is connected to the upper part of each of the connecting plates, and the protruding plate and the connecting plate are located on the same straight line.

[0009] Furthermore, the connection end between the grid member and the connecting plate is provided with reinforcing ribs.

[0010] Furthermore, the grid member is an arched structure with a high center and low periphery.

[0011] Furthermore, the connecting plate is connected to the inner side of the housing via a connecting rib, one end of which is fixedly connected to the connecting plate and the other end is detachably connected to the inner side of the housing.

[0012] Furthermore, the number of connecting ribs is the same as that of the connecting plate. The connecting ribs are welded and fixed to the connecting plate. The connecting ribs are inclined. One end of the connecting rib is provided with a limiting plate. The inner wall of the housing is provided with a limiting groove corresponding to the connecting rib. The upper part of the limiting groove is open. The limiting plate can be inserted into the limiting groove from the opening and limited so that the lower part of the limiting plate abuts against the bottom of the limiting groove.

[0013] Furthermore, the height of each rib of the grid component is greater than the thickness of the rib.

[0014] In summary, this utility model has the following beneficial effects:

[0015] When maintenance of the motor and fan blades is required, simply remove the connecting screws between the protective cover and the housing from the outside, and then lift the protective cover with hoisting equipment to separate the motor and fan blades from the housing. This not only facilitates the maintenance of the motor and fan blades, but also eliminates the need to disassemble the housing during maintenance, thus avoiding frequent disassembly and reassembly of the housing and cooling tower. It has good reliability, and the protective cover, motor and fan blades are integrated into a single component, which can be replaced as a whole, making maintenance more convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0017] Figure 2 This is an exploded view of this embodiment;

[0018] Figure 3 This is a cross-sectional view of this embodiment;

[0019] Figure 4 This is a schematic diagram of the connection structure between the motor and the protective cover in this embodiment.

[0020] Reference numerals: 1. Shell; 11. Limiting groove; 2. Protective cover; 21. Annular sleeve; 22. Annular plate; 23. Grid component; 24. Reinforcing rib; 25. Support frame; 26. Connecting plate; 27. Protruding plate; 3. Motor; 4. Fan blade; 5. Connecting rib; 51. Limiting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, this embodiment discloses a cooling fan that is easy to maintain, including a housing 1. A protective cover 2 is fixed to one end of the housing 1. The protective cover 2 is fixed to the upper part of the housing 1 by screws. A motor 3 is provided inside the housing 1. The drive shaft end of the motor 3 is connected to a fan blade 4. When installed with a cooling tower (not shown in the figure), the housing 1 is embedded in the top of the cooling tower and the protective cover 2 is set facing upward.

[0023] The motor 3 is fixed to the protective cover 2. Specifically, the protective cover 2 includes an annular sleeve 21 and an annular plate 22, which are connected by a grid member 23. The motor 3 is fixed inside the annular sleeve 21, and the lower part of the annular plate 22 abuts against the upper part of the housing 1. The annular plate 22 is fixed to the housing 1 by screws. Thus, when it is necessary to maintain the motor 3 and the fan blades 4, it is only necessary to remove the connecting screws between the protective cover 2 and the housing 1 from the outside, and then lift the protective cover 2 with a hoisting device to separate the motor 3 and the fan blades 4 from the housing 1. This not only facilitates the maintenance of the motor 3 and the fan blades 4, but also eliminates the need to disassemble the housing 1 during maintenance, thereby avoiding frequent disassembly and assembly of the housing 1 and the cooling tower. This ensures high reliability. Furthermore, by integrating the protective cover 2, the motor 3, and the fan blades 4 into an integrated component, the entire assembly can be replaced, making maintenance more convenient.

[0024] like Figure 4 As shown, a support frame 25 is provided below the annular sleeve 21. The support frame 25 is connected to the annular sleeve 21 through multiple connecting plates 26. The lower part of the motor 3 abuts against the upper part of the support frame 25. The drive shaft of the motor 3 passes through the lower part of the support frame 25. The support frame 25 is fixed to the lower part of the motor 3 by screws. The upper part of the annular sleeve 21 is provided with multiple protruding plates 27. The protruding plates 27 are fixed to the side of the motor 3 by screws. Through the support frame 25 and the connecting plates 26, not only can the motor 3 be supported, but the lower part of the motor 3 and the part near the upper part can also be fixed, which can effectively improve the fixing effect of the motor 3 and facilitate the heat dissipation of the motor 3.

[0025] Each of the connecting plates 26 is connected to a protruding plate 27 on its upper part. The protruding plate 27 and the connecting plate 26 are located on the same straight line. The connection end of the grid member 23 and the connecting plate 26 is provided with a reinforcing rib 24. By aligning the protruding plate 27 and the connecting plate 26 on the same straight line, the force on the motor is more even, which is beneficial to improving the fixing effect of the motor. In addition, the reinforcing rib 24 can also improve the overall structural strength of the protective cover 2.

[0026] like Figure 3 As shown, the grid member 23 is an arched structure with a high center and low perimeter. The height of each rib of the grid member 23 is greater than the thickness of the rib. Through the above design, the structural strength of the protective cover 2 can be further improved, and the reliability is good.

[0027] The connecting plate 26 is connected to the inner side of the housing 1 by connecting ribs 5. One end of the connecting rib 5 is fixedly connected to the connecting plate 26 and the other end is detachably connected to the inner side of the housing 1. Specifically, the number of connecting ribs 5 is the same as that of the connecting plate 26. The connecting ribs 5 are welded and fixed to the connecting plate 26. The connecting ribs 5 are inclined. One end of the connecting rib 5 is provided with a limiting plate 51. The inner wall of the housing 1 is provided with a limiting groove 11 corresponding to the connecting rib 5. The upper part of the limiting groove 11 is open. The limiting plate 51 can be inserted into the limiting groove 11 from the opening and limited so that the lower part of the limiting plate 51 abuts against the bottom of the limiting groove 11. By setting the connecting ribs 5, the fixing effect of the motor 3 and the overall structural strength can be further improved. Furthermore, through the cooperation of the connecting ribs 5 and the limiting groove 11, not only can the detachable design of the connecting ribs 5 and the housing 1 be realized, which facilitates the maintenance of the motor 3 and the fan blade 4, but it can also play a limiting support role for the connecting ribs 5, thereby improving the overall structural strength.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A maintenance-friendly cooling fan characterized by, Includes a housing (1), one end of which is fixed with a protective cover (2), and a motor (3) is provided inside the housing (1). The drive shaft end of the motor (3) is connected with a fan blade (4). The motor (3) is fixed to the protective cover (2), and the protective cover (2) is fixed to the upper part of the housing (1) by screws. The protective cover (2) includes an annular sleeve (21) and an annular plate (22), the annular sleeve (21) and the annular plate (22) are connected by a grid member (23), the motor (3) is fixed inside the annular sleeve (21), and the lower part of the annular plate (22) abuts against the upper part of the housing (1); A support frame (25) is provided below the annular sleeve (21). The support frame (25) is connected to the annular sleeve (21) through multiple connecting plates (26). The lower part of the motor (3) abuts against the upper part of the support frame (25), and the drive shaft of the motor (3) extends out from below the support frame (25).

2. A maintenance-friendly cooling fan according to claim 1, characterized in that The support frame (25) is fixed to the lower part of the motor (3) by screws. The upper part of the annular sleeve (21) is provided with multiple protrusions (27), and the protrusions (27) are fixed to the side of the motor (3) by screws.

3. A maintenance-friendly cooling fan according to claim 2, characterized in that Each of the connecting plates (26) is connected to a protruding plate (27) on its upper part, and the protruding plate (27) and the connecting plate (26) are located on the same straight line.

4. A maintenance-friendly cooling fan according to claim 1, characterized in that The connection end between the grid member (23) and the connecting plate (26) is provided with reinforcing ribs (24).

5. A maintenance-friendly cooling fan according to claim 1, characterized in that The grid element (23) is an arched structure with a high center and low sides.

6. A maintenance-friendly cooling fan according to claim 1, characterized in that The connecting plate (26) is connected to the inner side of the shell (1) by a connecting rib (5). One end of the connecting rib (5) is fixedly connected to the connecting plate (26) and the other end is detachably connected to the inner side of the shell (1).

7. A maintenance-friendly cooling fan according to claim 6, characterized in that The number of connecting ribs (5) is the same as that of connecting plates (26). The connecting ribs (5) are welded and fixed to the connecting plates (26). The connecting ribs (5) are inclined. One end of the connecting ribs (5) is provided with a limiting plate (51). The inner wall of the housing (1) is provided with a limiting groove (11) corresponding to the connecting ribs (5). The upper part of the limiting groove (11) is open. The limiting plate (51) can be inserted into the limiting groove (11) from the opening and limited so that the lower part of the limiting plate (51) abuts against the bottom of the limiting groove (11).

8. A maintenance-friendly cooling fan according to claim 1, characterized in that The height dimension of each rib of the grid member (23) is greater than the thickness dimension of the rib.

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