Centrifugal fan impeller assembly with high pneumatic performance

Abstract

The utility model relates to the technical field of centrifugal fans, in particular to a high-pneumatic centrifugal fan impeller assembly which comprises a connecting disc, a clamping ring, blades and a fixing pressing plate, the connecting disc is provided with a limiting groove, the connecting disc is fixedly connected with the output end of a driving motor, installation conditions are provided for the clamping ring, and the clamping ring is used for clamping and fixing the blades. When the blades of the fan impeller assembly are damaged accidentally, the blades can be limited by the limiting grooves in the clamping ring, the fixing pressing plate is used for pressing and fixing the blades on the clamping ring, the phenomenon that the blades on the clamping ring fall off when the centrifugal fan rotates is avoided, and when the blades of the fan impeller assembly are damaged accidentally, only the fixing pressing plate needs to be detached, and the blades can be fixed. The damaged blades on the clamping ring are independently replaced, and compared with the mode that the whole impeller is replaced when the blades of a traditional centrifugal fan are damaged, the needed cost is lower, and more resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan impeller assembly with high aerodynamics. Background Art

[0002] Centrifugal fans are based on the principle of converting kinetic energy into potential energy. They use high-speed rotating impellers to accelerate the gas, then decelerate and change the flow direction to convert kinetic energy into potential energy. They are widely used in ventilation, cooling and dust removal in factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draft in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; inflation and propulsion of wind tunnel wind sources and hovercraft, etc. The impeller is the core component of the centrifugal fan. The existing centrifugal fan impeller has low aerodynamic performance due to inconsistent blade distribution angles, making it difficult to meet the required flow and pressure. At the same time, it also causes poor stability of the impeller structure, shortens the service life, requires frequent maintenance and replacement, and has high maintenance costs, affecting normal production efficiency.

[0003] Prior art CN215486797U discloses a centrifugal fan impeller assembly with high aerodynamics, comprising a fan housing, a centrifugal fan impeller installed inside the fan housing, and a cover plate that rotates with the centrifugal fan impeller after being engaged with the centrifugal fan impeller, wherein the centrifugal fan impeller comprises an impeller body with blades inside, a passive gear embedded with the protruding head of the blade, a rotating gear ring whose outer ring is meshed with the passive gear, and a driving gear meshed with the inner ring of the rotating gear ring; by manually rotating the active gear, the active gear drives the rotating gear ring to rotate the passive gear, and the angle of the blades of the impeller body is adjusted at the same time, so that the impeller body can improve the aerodynamics during the rotation process, and all the passive gears are adjusted by rotating the gear ring, that is, the angles of all the blades are adjusted to be consistent, which effectively reduces the wind resistance, makes the rotation of the centrifugal fan impeller smoother, is conducive to extending the service life of the centrifugal fan impeller, and reduces the number of maintenance times.

[0004] The impeller blades of the above-mentioned fan impeller assembly are connected to the impeller body by welding. When the blades on the fan impeller are accidentally damaged, it is impossible to replace the individual blades in a targeted manner, and the entire impeller body must be disassembled and replaced, resulting in a serious waste of resources. Utility Model Content

[0005] The utility model aims to provide a centrifugal fan impeller assembly with high aerodynamics, aiming to solve the problem that the blades of the existing centrifugal fan impeller assembly with high aerodynamics are welded and fixed, some blades are damaged, and the entire impeller needs to be replaced, resulting in waste of resources.

[0006] To achieve the above-mentioned purpose, the utility model provides a highly aerodynamic centrifugal fan impeller assembly, including a connecting disk, a clamping ring, blades and a fixed pressure plate, the connecting disk having a limiting groove; the limiting groove is located on the side of the clamping ring away from the connecting disk, the clamping ring is fixedly connected to the connecting disk and is located on one side of the connecting disk, the blades are clamped to the clamping ring and are located in the limiting groove, and the fixed pressure plate is arranged on the side of the blades away from the clamping ring.

[0007] Wherein, the connecting plate includes a flange plate, a mounting plate and a connecting sleeve, the mounting plate is fixedly connected to the clamping ring and is located on the side of the clamping ring away from the blade, the flange plate is fixedly connected to the mounting plate and is located on the side of the mounting plate away from the clamping ring, and the connecting sleeve is fixedly connected to the mounting plate and is located on the side of the mounting plate away from the flange plate.

[0008] Wherein, the fixed pressure plate includes a pressure plate and a fixing nut, the pressure plate is arranged on the side of the blade away from the clamping ring, the fixing nut is threadedly connected to the connecting sleeve and is located on the side of the pressure plate away from the blade.

[0009] Wherein, the high-aerodynamic centrifugal fan impeller assembly also includes an auxiliary component, and the auxiliary component is arranged on one side of the mounting disk and the pressure plate.

[0010] Among them, the auxiliary component includes a positioning column, a pressure bolt and a knob, the positioning column is fixedly connected to the mounting disk and passes through the pressure plate, the pressure bolt is threadedly connected to the mounting disk and passes through the pressure plate, and the knob is fixedly connected to the pressure bolt and is located on the side of the pressure bolt away from the mounting disk.

[0011] The utility model discloses a centrifugal fan impeller assembly with high aerodynamic performance, wherein the connecting disk is connected and fixed to the output end of the driving motor to provide installation conditions for the clamping ring, and the clamping ring is used to clamp and fix the blades. The limiting grooves on the clamping ring play a limiting role on the blades when the blades are installed, and the limiting grooves have multiple groups, and the limiting grooves in the same group have different angles, which can be selected and used according to user needs, thereby improving the aerodynamic performance of the blade rotation, and the fixed pressure plate is used to press and fix the blades on the clamping ring to avoid the blades on the clamping ring from falling off when the centrifugal fan rotates. When the blades of the fan impeller assembly are accidentally damaged, it is only necessary to remove the fixed pressure plate and replace the damaged blades on the clamping ring separately. Compared with the traditional centrifugal fan in which the entire impeller is replaced when the blades are damaged, the required cost is lower and more resources are saved, and the problem of resource waste caused by the welding and fixing of the blades of the existing centrifugal fan impeller assembly with high aerodynamic performance and the need to replace the entire impeller when some blades are damaged is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a structural schematic diagram of a high aerodynamic centrifugal fan impeller assembly according to the first embodiment of the utility model.

[0014] Figure 2 It is a longitudinal cross-sectional view of a high-aerodynamic centrifugal fan impeller assembly along the connecting sleeve axis direction according to the first embodiment of the utility model.

[0015] Figure 3 It is a structural schematic diagram of a highly aerodynamic centrifugal fan impeller assembly according to the second embodiment of the utility model.

[0016] In the figure: 101-clamping ring, 102-blade, 103-limiting groove, 104-flange, 105-mounting plate, 106-connecting sleeve, 107-pressure plate, 108-fixing nut, 201-positioning column, 202-pressure bolt, 203-knob. DETAILED DESCRIPTION

[0017] The first embodiment of the present application is:

[0018] See also Figure 1-Figure 2 , Figure 1 It is a structural schematic diagram of the utility model. Figure 2 It is a longitudinal sectional view of the utility model along the connecting sleeve axis direction. The high aerodynamic centrifugal fan impeller assembly described in this embodiment includes a connecting plate, a clamping ring 101, blades 102 and a fixed pressure plate, and the connecting plate has a limiting groove 103; the connecting plate includes a flange plate 104, a mounting plate 105 and a connecting sleeve 106, and the fixed pressure plate includes a pressure plate 107 and a fixing nut 108. The above-mentioned scheme solves the problem that the blades of the existing high aerodynamic centrifugal fan impeller assembly are welded and fixed, and some blades are damaged, and the entire impeller needs to be replaced, resulting in a waste of resources. It can be understood that the above-mentioned scheme can be used in the scenario of replacing centrifugal fan impeller blades.

[0019] According to this specific embodiment, the limiting groove 103 is located on the side of the clamping ring 101 away from the connecting disk, the clamping ring 101 is fixedly connected to the connecting disk and is located on one side of the connecting disk, the blade 102 is clamped with the clamping ring 101 and is located in the limiting groove 103, the fixed pressure plate is arranged on the side of the blade 102 away from the clamping ring 101, the connecting disk is connected and fixed to the output end of the driving motor to provide installation conditions for the clamping ring 101, the clamping ring 101 is used to clamp and fix the blade 102, and the limiting groove 103 on the clamping ring 101 plays a limiting role on the blade 102 when the blade 102 is installed, and the limiting groove 103 has multiple groups, and the limiting grooves 103 of the same group Different angles can be selected and used according to user needs, thereby improving the aerodynamics of the rotation of the blade 102. The fixed pressure plate is used to press and fix the blade 102 on the clamping ring 101 to prevent the blade 102 on the clamping ring 101 from falling off when the centrifugal fan rotates. When the blade 102 of the fan impeller assembly is accidentally damaged, it is only necessary to remove the fixed pressure plate and replace the damaged blade 102 on the clamping ring 101 separately. Compared with replacing the entire impeller when the blade 102 of the traditional centrifugal fan is damaged, the cost is lower and more resources are saved. It solves the problem that the blades of the existing high-aerodynamic centrifugal fan impeller assembly are welded and fixed, and some blades are damaged, and the entire impeller needs to be replaced, resulting in a waste of resources.

[0020] Among them, the mounting disk 105 is fixedly connected to the clamping ring 101 and is located on the side of the clamping ring 101 away from the blade 102, the flange 104 is fixedly connected to the mounting disk 105 and is located on the side of the mounting disk 105 away from the clamping ring 101, the connecting sleeve 106 is fixedly connected to the mounting disk 105 and is located on the side of the mounting disk 105 away from the flange 104, the flange 104 is provided for connecting and fixing the mounting disk 105 to the output end of the driving motor, the mounting disk 105 provides installation conditions for the clamping ring 101, and the connecting sleeve 106 is threadedly connected to the fixed pressure plate, so that the fixed pressure plate presses and fixes the blade 102.

[0021] Secondly, the pressure plate 107 is arranged on the side of the blade 102 away from the clamping ring 101, the fixing nut 108 is threadedly connected to the connecting sleeve 106, and is located on the side of the pressure plate 107 away from the blade 102, the fixing nut 108 is threadedly connected to the connecting sleeve 106, and the pressure plate 107 is fixed to one end of the blade 102. The pressure plate 107 is used to press and fix the blade 102 to prevent the blade 102 on the clamping ring 101 from falling off when the centrifugal fan rotates.

[0022] When the blade 102 is damaged, the user turns the rotating nut by hand to separate the rotating nut from the connecting sleeve 106, and then removes the pressure plate 107 from the blade 102 to expose the blade 102 pressed by the pressure plate 107. At this time, the user can replace the damaged blade 102 individually. Finally, the pressure plate 107 covers the blade 102, and rotates the rotating nut in the opposite direction to fix the rotating nut on the connecting sleeve 106, so that the pressure plate 107 presses the blade 102 to complete the replacement of the blade 102. It is convenient and quick without the need for tools.

[0023] The second embodiment of the present application is:

[0024] Based on the first embodiment, please refer to Figure 3 , Figure 3 It is a structural schematic diagram of the utility model. The high aerodynamic centrifugal fan impeller assembly of this embodiment also includes an auxiliary component, and the auxiliary component includes a positioning column 201, a pressure bolt 202 and a knob 203.

[0025] According to this specific embodiment, the auxiliary component is disposed on one side of the mounting plate 105 and the pressure plate 107 . The auxiliary component is disposed to enhance the stability of the installation of the blade 102 .

[0026] Among them, the positioning column 201 is fixedly connected to the mounting disk 105 and passes through the pressure plate 107, the pressure bolt 202 is threadedly connected to the mounting disk 105 and passes through the pressure plate 107, the knob 203 is fixedly connected to the pressure bolt 202 and is located on the side of the pressure bolt 202 away from the mounting disk 105, the pressure bolt 202 passes through the pressure plate 107 and is threadedly connected to the mounting disk 105, so that the pressure plate 107 is firmly pressed on one side of the blade 102, and is used in conjunction with the fixing nut 108 to further enhance the stability of the installation of the blade 102, the setting of the knob 203 is convenient for users to rotate and disassemble the pressure bolt 202, and improves practicality, the setting of the positioning column 201 is used to position the pressure plate 107 during installation to avoid the displacement of the pressure plate 107, resulting in the misalignment of the through hole on the pressure plate 107 and the threaded hole on the mounting disk 105, so that the pressure bolt 202 cannot be installed smoothly.

[0027] When the auxiliary component is in use, the pressing plate 107 is limited by the positioning column 201 , and the pressing bolt 202 is rotated by the knob 203 , so that the pressing bolt 202 passes through the pressing plate 107 and is connected and fixed to the mounting plate 105 .

[0028] The above disclosure is only a preferred embodiment of a high-aerodynamic centrifugal fan impeller assembly of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A centrifugal fan impeller assembly with high aerodynamic performance, characterized in that: It includes a connecting disk, a clamping ring, blades and a fixed pressing plate, wherein the connecting disk has a limiting groove; The limiting groove is located on the side of the clamping ring away from the connecting disk, the clamping ring is fixedly connected to the connecting disk and is located on one side of the connecting disk, the blade is clamped with the clamping ring and is located in the limiting groove, and the fixed pressure plate is arranged on the side of the blade away from the clamping ring.

2. A centrifugal fan impeller assembly with high aerodynamic performance as claimed in claim 1, characterized in that: The connecting plate includes a flange, a mounting plate and a connecting sleeve. The mounting plate is fixedly connected to the clamping ring and is located on a side of the clamping ring away from the blade. The flange is fixedly connected to the mounting plate and is located on a side of the mounting plate away from the clamping ring. The connecting sleeve is fixedly connected to the mounting plate and is located on a side of the mounting plate away from the flange.

3. A centrifugal fan impeller assembly with high aerodynamic performance as claimed in claim 2, characterized in that: The fixed pressure plate comprises a pressure plate and a fixing nut. The pressure plate is arranged on a side of the blade away from the clamping ring. The fixing nut is threadedly connected to the connecting sleeve and is located on a side of the pressure plate away from the blade.

4. A centrifugal fan impeller assembly with high aerodynamic performance as claimed in claim 3, characterized in that: The high-aerodynamic centrifugal fan impeller assembly also includes an auxiliary component, which is arranged on one side of the mounting disk and the pressure plate.

5. A centrifugal fan impeller assembly with high aerodynamic performance as claimed in claim 4, characterized in that: The auxiliary component includes a positioning column, a pressure bolt and a knob. The positioning column is fixedly connected to the mounting disk and passes through the pressure plate. The pressure bolt is threadedly connected to the mounting disk and passes through the pressure plate. The knob is fixedly connected to the pressure bolt and is located on the side of the pressure bolt away from the mounting disk.

Images