Centrifugal fan capable of flexibly adjusting dynamic balance

Abstract

The utility model relates to the technical field of dynamic balance, in particular to a centrifugal fan capable of flexibly adjusting dynamic balance, which comprises a fan body, plastic fan blades, a circular ring frame, a rotating component and a plurality of embedded blocks, the fan body is provided with a plurality of grooves distributed in a surrounding manner, each groove is provided with two hole sites, the plastic fan blades are arranged on the fan body, and the circular ring frame is arranged on the plastic fan blades. The multiple embedded blocks are matched with the corresponding grooves respectively, the rotating assembly is arranged between the fan body and the plastic fan blades, and the circular ring frame is fixedly arranged in the plastic fan blades in a sleeved mode. By additionally arranging the multiple embedded blocks, the weight of the fan body is increased, after the corresponding embedded blocks can be knocked open through the two hole sites, the embedded blocks with different weights can be replaced conveniently, the device does not need to be overall disassembled, the embedded blocks cannot fall off, and therefore the device can freely adjust dynamic balance and is high in efficiency, low in cost and convenient to use. And the risk of falling off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic balance, in particular to a centrifugal fan capable of flexibly adjusting dynamic balance. Background Art

[0002] Centrifugal fans are a type of air conditioning equipment widely used in industrial, commercial and civil fields. The working principle of centrifugal fans is based on the action of centrifugal force. When the motor drives the fan impeller to rotate, a strong airflow is generated. After the air is sucked into the impeller, it is accelerated as the impeller rotates and thrown out in the radial direction, forming a high-speed airflow. During the rotation process, poor dynamic balance will cause equipment vibration.

[0003] In the prior art, in order to avoid vibration of the fan during rotation, the dynamic balance is adjusted by adding iron sheets or the fan is removed from the injection molding machine and then adjusted, thereby reducing the vibration of the equipment.

[0004] However, in the aforementioned prior art, the fan has no adjustment mechanism, and production requires the addition of iron sheets to adjust the dynamic balance, which is inefficient and costly, and there is a risk that the iron sheets will fall off during the rotation of the fan. Utility Model Content

[0005] The purpose of the utility model is to provide a centrifugal fan with flexible adjustable dynamic balance, which solves the problems in the prior art that the fan has no adjustment mechanism, requires the addition of iron sheets to adjust the dynamic balance during production, is inefficient and costly, and has the risk of the iron sheets falling off during the rotation of the fan.

[0006] To achieve the above-mentioned purpose, the utility model provides a centrifugal fan with flexible adjustable dynamic balance, comprising a fan body, plastic fan blades, a circular ring frame, a rotating assembly and a plurality of embedded blocks, the fan body having a plurality of circumferentially distributed grooves, each of the grooves having two holes, the plastic fan blades being arranged on the fan body, the plurality of embedded blocks being respectively adapted to the corresponding grooves, the rotating assembly being arranged between the fan body and the plastic fan blades, and the circular ring frame being fixedly sleeved inside the plastic fan blades.

[0007] Among them, the rotating assembly includes a main shaft and a ring, the outer wall of the ring has gear patterns, the plastic fan blade has a gear hole, the ring is fixedly sleeved on the outside of the main shaft, the gear patterns are adapted to the gear hole, and one end of the main shaft passes through the fan body and is located inside the gear hole.

[0008] Among them, the plastic fan blades include an annular frame and multiple curved blades, a plurality of curved grooves are distributed around the fan body, and the multiple curved blades are respectively adapted to the corresponding curved grooves, and the multiple curved blades are respectively arranged around the inside of the annular frame.

[0009] Among them, the centrifugal fan with flexible adjustable dynamic balance also includes a base block, multiple outer surrounding rods and multiple inner surrounding rods. The base block is fixedly connected to the fan body and is located at the right end of the fan body. The multiple outer surrounding rods are respectively inserted into the fan body, and the multiple inner surrounding rods are respectively inserted into the fan body, and the multiple inner surrounding rods are respectively located inside the multiple outer surrounding rods.

[0010] The utility model provides a centrifugal fan with flexible adjustable dynamic balance, wherein the fan body has a plurality of circumferentially distributed grooves, each of the grooves has two holes, the plastic fan blades are arranged on the fan body, the plurality of embedded blocks are respectively adapted to the corresponding grooves, the rotating assembly is arranged between the fan body and the plastic fan blades, and the circular ring frame is fixedly sleeved inside the plastic fan blades. By adding a plurality of the embedded blocks, the weight of the fan body is increased, and the corresponding embedded blocks can be knocked open through the two holes, making it easy to replace the embedded blocks of different weights without dismantling the entire device, and the embedded blocks will not fall off. Therefore, the device can freely adjust the dynamic balance, with high efficiency and low cost, and without the risk of falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the plastic fan blade of the present utility model.

[0014] Figure 3 It is a partial structural diagram of the utility model.

[0015] Figure 4 It is the overall right view of the utility model.

[0016] 1-fan body, 2-plastic fan blade, 3-ring frame, 4-inlaid block, 5-groove, 6-hole, 7-spindle, 8-ring, 9-gear pattern, 10-gear hole, 11-ring frame, 12-curved fan blade, 13-curved groove, 14-bottom block, 15-outer surrounding rod, 16-inner surrounding rod. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0018] See also Figures 1 to 4 ,in, Figure 1 It is a schematic diagram of the overall structure of the utility model. Figure 2 This is a structural diagram of the plastic fan blade 2 of the present invention. Figure 3 It is a partial structural diagram of the utility model. Figure 4 It is the overall right view of the utility model.

[0019] The utility model provides a centrifugal fan with flexible adjustable dynamic balance, comprising a fan body 1, plastic fan blades 2, a circular ring frame 3, a rotating assembly and a plurality of embedded blocks 4, wherein the fan body 1 has a plurality of circumferentially distributed grooves 5, each of the grooves 5 has two hole positions 6, the plastic fan blades 2 are arranged on the fan body 1, the plurality of embedded blocks 4 are respectively adapted to the corresponding grooves 5, the rotating assembly is arranged between the fan body 1 and the plastic fan blades 2, and the circular ring frame 3 is fixedly sleeved inside the plastic fan blades 2.

[0020] In this embodiment, the weight of the fan body 1 is increased by adding a plurality of the embedded blocks 4, and the corresponding embedded blocks 4 can be knocked open through the two holes 6, so that the embedded blocks 4 of different weights can be replaced without dismantling the entire device, and the embedded blocks 4 will not fall off. Therefore, the device can freely adjust the dynamic balance, with high efficiency and low cost, and there is no risk of falling off.

[0021] Furthermore, the rotating assembly includes a main shaft 7 and a ring 8, the outer wall of the ring 8 has a gear pattern 9, the plastic fan blade 2 has a gear hole 10, the ring 8 is fixedly sleeved on the outside of the main shaft 7, the gear pattern 9 is adapted to the gear hole 10, and one end of the main shaft 7 passes through the fan body 1 and is located inside the gear hole 10.

[0022] In this embodiment, the rotation of the main shaft 7 drives the ring 8 to rotate, and then the plastic fan blades 2 are driven to rotate under the cooperation of the gear pattern 9 and the gear hole 10, thereby generating wind force.

[0023] Furthermore, the plastic fan blades 2 include an annular frame 11 and multiple curved blades 12. A plurality of curved grooves 13 are distributed around the fan body 1. The multiple curved blades 12 are respectively adapted to the corresponding curved grooves 13. The multiple curved blades 12 are respectively arranged around the inside of the annular frame 11.

[0024] In this embodiment, when the annular frame 11 is driven by the main shaft 7 to rotate, wind force is generated by the rotation of the plurality of curved blades 12 .

[0025] Furthermore, the centrifugal fan with flexible adjustable dynamic balance also includes a base block 14, a plurality of outer surrounding rods 15 and a plurality of inner surrounding rods 16. The base block 14 is fixedly connected to the fan body 1 and is located at the right end of the fan body 1. The plurality of outer surrounding rods 15 are respectively inserted into the fan body 1, and the plurality of inner surrounding rods 16 are respectively inserted into the fan body 1, and the plurality of inner surrounding rods 16 are respectively located inside the plurality of outer surrounding rods 15.

[0026] In this embodiment, the fan body 1 is fixed by the bottom block 14 , and the plurality of inner surrounding rods 16 are respectively inserted into the fan body 1 , and the plurality of inner surrounding rods 16 are respectively located inside the plurality of outer surrounding rods 15 .

[0027] When using the centrifugal fan of the utility model that can flexibly adjust the dynamic balance, the weight of the fan body 1 is increased by adding a plurality of the embedded blocks 4, and the corresponding embedded blocks 4 can be knocked open through the two holes 6, so that the embedded blocks 4 of different weights can be replaced conveniently without the need to dismantle the entire device, and the embedded blocks 4 will not fall off. Therefore, the device can freely adjust the dynamic balance, and has high efficiency, low cost, and no risk of falling off. The rotation of the main shaft 7 drives the ring 8 to rotate, and then the plastic fan blades 2 are driven to rotate under the cooperation of the gear pattern 9 and the gear hole 10, thereby generating wind force. When the annular frame 11 is driven to rotate by the main shaft 7, the rotation of the plurality of curved blades 12 generates wind force.

[0028] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A centrifugal fan with flexible dynamic balance adjustment, characterized in that: It includes a fan body, plastic fan blades, a ring frame, a rotating assembly and a plurality of embedded blocks; The fan body has a plurality of circumferentially distributed grooves, each of the grooves has two holes, the plastic fan blades are arranged on the fan body, and the plurality of embedded blocks are respectively adapted to the corresponding grooves. The rotating assembly is arranged between the fan body and the plastic fan blades, and the circular ring frame is fixedly sleeved inside the plastic fan blades.

2. The centrifugal fan with flexible dynamic balance adjustment according to claim 1, characterized in that: The rotating assembly includes a main shaft and a ring. The outer wall of the ring has gear patterns. The plastic fan blade has a gear hole. The ring is fixedly sleeved on the outside of the main shaft. The gear patterns are adapted to the gear hole. One end of the main shaft passes through the fan body and is located inside the gear hole.

3. The centrifugal fan with flexible dynamic balance adjustment according to claim 2, characterized in that: The plastic fan blades include an annular frame and a plurality of curved blades. A plurality of curved grooves are distributed around the fan body. The plurality of curved blades are respectively adapted to the corresponding curved grooves. The plurality of curved blades are respectively arranged around the inside of the annular frame.

4. The centrifugal fan with flexible dynamic balance adjustment according to claim 3, characterized in that: The centrifugal fan with flexible adjustable dynamic balance also includes a bottom block, a plurality of outer surrounding rods and a plurality of inner surrounding rods. The bottom block is fixedly connected to the fan body and is located at the right end of the fan body. The plurality of outer surrounding rods are respectively inserted into the fan body, and the plurality of inner surrounding rods are respectively inserted into the fan body, and the plurality of inner surrounding rods are respectively located inside the plurality of outer surrounding rods.

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