Extension shell type fan

Abstract

The utility model discloses an extension shell type fan which comprises a shell, an impeller module is installed in the shell, a rear cover plate is fixed to the tail end of the shell, a flange plate is fixed to the front end of the shell, a fixing plate is connected to the rear cover plate, an extension plate is formed at the rear end of the shell, the extension plate is located on the rear side of the rear cover plate, and the flange plate is connected to the rear cover plate. The fan base comprises a shell and a fixing plate, the two ends of the fixing plate are connected to extending plates, a bearing seat assembly is fixed to the upper end of the fixing plate and comprises a center shaft, one end of the center shaft is located in the shell, and an impeller module is connected to the center shaft. The problem that the bearing seat vibrates when the fan runs is solved, the extension plate is formed at the rear end of the shell, meanwhile, the fixing plate and the bearing seat assembly are installed on the extension plate, the connection strength and rigidity between the fixing plate and the shell and between the bearing seat assembly and the shell are further enhanced, and vibration of the bearing seat assembly is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an extended shell type fan. Background Art

[0002] Centrifugal fans are commonly used in various industries as industrial equipment. They consist of a housing, main shaft, impeller, bearing seat, transmission components, and motor. Among them, cantilever sheet metal fans are the most widely used due to their simple production and easy maintenance.

[0003] For example, patent CN202222623397.2 provides a multi-stage centrifugal fan with changeable stages. In this technical solution, the drive shaft bearing seat is installed on the base, with a shaft extending from one end to connect to the transmission assembly, and an impeller installed on the other end. The rigidity of the base will affect the vibration generated by the bearing seat when the fan is running. Due to the reserved space in the required installation equipment, the size of the base often cannot meet the vibration requirements well. Therefore, the extended casing fan is designed to support the bearing seat through an integrated casing, which improves the rigidity of the base and reduces the vibration of the bearing seat. Utility Model Content

[0004] The purpose of the utility model is to provide an extended casing type fan, which enhances the rigidity of the casing by forming an extension plate on the rear end of the casing, and at the same time, the fixing plate and the bearing seat assembly are installed on the extension plate, which further enhances the rigidity between the fixing plate and the bearing seat assembly and the casing, and reduces the vibration of the bearing seat assembly.

[0005] The utility model provides the following technical solution: an extended casing fan, comprising a casing, an impeller module installed in the casing, a rear cover plate fixed to the end of the casing, a flange plate fixed to the front end of the casing, a fixing plate connected to the rear cover plate, an extension plate formed at the rear end of the casing, the extension plate being located on the rear side of the rear cover plate, the two ends of the fixing plate being connected to the extension plate, a bearing seat assembly being fixed to the upper end of the fixing plate, the bearing seat assembly comprising a central shaft, one end of the central shaft being located in the casing, an impeller module being connected to the central shaft, and the impeller module being located in the casing.

[0006] In order to facilitate the installation of the bearing seat assembly on the fixed plate through the recess and increase the installation space, the extension plate is arc-shaped, and the extension plate is extended from the rear end of the shell, and an arc-shaped recess is formed at the upper end of the extension plate, and the rear cover plate is located on the extension plate.

[0007] In order to make the central shaft rotate smoothly and enable the transmission part to drive the impeller module to rotate, the bearing seat assembly includes a bearing seat front support plate and a bearing seat rear support plate installed on the fixed plate, and the bearing seat front support plate and the bearing seat rear support plate are both provided with a center hole, and the central shaft is set in the center hole, and a bearing seat sleeve is also sleeved on the central shaft, and the bearing seat sleeve is inserted between the bearing seat front support plate and the bearing seat rear support plate, and both ends of the bearing seat sleeve are sleeved with a bearing front cover and a bearing rear cover, and the bearing front cover and the bearing rear cover are both connected to the central shaft through bearings.

[0008] In order to enable the shell to be installed at different positions inside the equipment, a mounting plate is fixed on the flange plate, and the mounting plate and the fixing plate are on the same plane.

[0009] A circular hole is provided at the center of the flange plate, and an air inlet is fixed in the circular hole.

[0010] An air outlet is formed on the outer surface of the shell, and the air outlet is located on the outside of the impeller module. The air outlet is also located on the side of the rear cover.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are: by forming an extension plate on the rear end of the shell, the rigidity of the shell is enhanced, and at the same time, the fixing plate and the bearing seat assembly are installed on the extension plate, which further enhances the rigidity between the fixing plate and the bearing seat assembly and the shell, and reduces the vibration of the bearing seat assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 It is a three-dimensional diagram of the overall structure of the utility model from another perspective;

[0015] Figure 3 It is a three-dimensional diagram of the overall structure of the utility model;

[0016] Figure 4 It is a cross-sectional view of the utility model;

[0017] In the figure: 1. Shell; 11. Extension plate; 2. Fixing plate; 3. Bearing seat assembly; 31. Bearing seat front support plate; 32. Bearing seat rear support plate; 33. Center shaft; 34. Bearing front cover; 35. Bearing seat sleeve; 36. Bearing rear cover; 4. Rear cover plate; 5. Flange plate; 51. Air inlet; 6. Mounting plate; 7. Air outlet; 8. Impeller module. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0019] See also Figures 1 to 4 The utility model provides a technical solution: an extended shell type fan, including a shell 1, an impeller module 8 is installed in the shell 1, a rear cover plate 4 is fixed to the end of the shell 1, the edge of the rear cover plate 4 is welded to the inner wall of the shell 1, a flange plate 5 is fixed to the front end of the shell 1, the flange plate 5 is welded to the end face of the shell 1, the flange plate 5 and the shell 1 are on the same center of a circle, a fixing plate 2 is connected to the rear cover plate 4, one end of the fixing plate 2 is welded to the rear cover plate 4, an extension plate 11 is formed at the rear end of the shell 1, the extension plate 11 is located on the rear side of the rear cover plate 4, and the fixing plate 2 are also welded to the extension plate 11. The upper end of the fixed plate 2 is fixed with a bearing seat assembly 3. The bearing seat assembly 3 includes a central shaft 33. One end of the central shaft 33 is located in the shell 1. The central shaft 33 is connected to the impeller module 8. The impeller module 8 is located in the shell 1. By welding the two ends of the fixed plate 2 to the extension plate 11 and the other end of the fixed plate 2 to the rear cover plate 4, the connection strength between the fixed plate 2 and the shell 1 is enhanced, the rigidity is further enhanced, the rigidity of the bearing seat assembly 3 is ensured, and the vibration of the bearing seat assembly 3 is reduced.

[0020] like Figure 1 As shown, the extension plate 11 is arc-shaped. The extension plate 11 is extended from the rear end of the shell 1, and an arc-shaped recess is formed at the upper end of the extension plate 11. The recess is formed at the upper end of the extension plate 11, which increases the installation space and facilitates the installation of the bearing seat assembly 3 on the fixed plate. The rear cover plate 4 is located on the extension plate 11, avoiding interference of the shell 1 with the installation of the bearing seat assembly 3.

[0021] like Figure 4The cam 33 is provided with a plurality of support plates 31 and 32, and the support plates 32 are provided with a plurality of support plates 31 and 32, respectively.

[0022] like Figure 3 As shown, a mounting plate 6 is fixed on the flange plate 5. The mounting plate 6 and the fixing plate 2 are on the same plane. The housing 1 is fixed inside the device through the mounting plate 6 or the fixing plate 2, and the mounting position can be adjusted as needed.

[0023] A circular hole is opened at the center of the flange plate 5 , and an air inlet 51 is fixed in the circular hole. The air inlet 51 is used to guide the outside wind into the impeller module 8 .

[0024] An air outlet 7 is formed on the outer surface of the shell 1. The air outlet 7 is located outside the impeller module 8. The air outlet 7 is also located on the side of the rear cover 4. The impeller module 8 is used to first enhance the wind force and then discharge the wind from the air outlet 7.

[0025] Finally, it should be noted that the above description is merely 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 will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An extended casing fan, comprising a casing, an impeller module mounted in the casing, a rear cover plate fixed to the end of the casing, and a flange plate fixed to the front end of the casing, characterized in that: A fixing plate is connected to the rear cover plate, and an extension plate is formed at the rear end of the shell, which is located on the rear side of the rear cover plate. Both ends of the fixing plate are connected to the extension plate, and a bearing seat assembly is fixed to the upper end of the fixing plate. The bearing seat assembly includes a central shaft, one end of the central shaft is located in the shell, and an impeller module is connected to the central shaft, and the impeller module is located in the shell.

2. The extended casing fan according to claim 1, characterized in that: The extension plate is in an arc shape and is formed by extending from the rear end of the shell body. An arc-shaped notch is formed at the upper end of the extension plate, and the rear cover plate is located on the extension plate.

3. The extended casing fan according to claim 1, characterized in that: The bearing seat assembly includes a bearing seat front support plate and a bearing seat rear support plate installed on a fixed plate. The bearing seat front support plate and the bearing seat rear support plate are both provided with a center hole. The center axis is set in the center hole. A bearing seat sleeve is also sleeved on the center axis. The bearing seat sleeve is inserted between the bearing seat front support plate and the bearing seat rear support plate. Both ends of the bearing seat sleeve are sleeved with a bearing front cover and a bearing rear cover. The bearing front cover and the bearing rear cover are both connected to the center axis through bearings.

4. The extended casing fan according to claim 1, characterized in that: A mounting plate is fixed on the flange plate, and the mounting plate and the fixing plate are on the same plane.

5. The extended casing fan according to claim 1, characterized in that: A circular hole is provided at the center of the flange plate, and an air inlet is fixed in the circular hole.

6. The extended casing fan according to claim 1, characterized in that: An air outlet is formed on the outer surface of the shell, and the air outlet is located on the outside of the impeller module. The air outlet is also located on the side of the rear cover.

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