CN213655240U

CN213655240U - Bidirectional multi-wing centrifugal fan impeller

Info

Publication number: CN213655240U
Application number: CN202022230846.8U
Authority: CN
Inventors: 李玉林; 王柱; 曹东
Original assignee: Jiaxing Pova Electric Appliance Co ltd
Current assignee: Jiaxing Pova Electric Appliance Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-07-09
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a two-way type multi-wing centrifugal fan impeller, including leaf roof, leaf medium plate, leaf bottom plate, wheel hub and a plurality of blade, leaf roof, leaf medium plate and leaf bottom plate are the annular and mutual parallel arrangement in proper order, and all blade circumference arrays are arranged, and the upper end of all blades is connected to the leaf roof, and the lower extreme of all blades is connected to the leaf bottom plate, and wheel hub installs on the leaf medium plate, and all blades are connected to leaf medium plate, the blade is two-way blade. The utility model provides a two-way type multi-wing centrifugal fan impeller, whole light and handy portable, simple process, simple to operate. The impeller is integrally designed in structure, and compression molding is carried out, so that the mold structure is greatly simplified, the molding precision and quality are improved, and the mold opening period, the cost and the subsequent maintenance cost are greatly reduced.

Description

Bidirectional multi-wing centrifugal fan impeller

Technical Field

The utility model belongs to the technical field of centrifugal fan, concretely relates to two-way type multi-wing centrifugal fan impeller.

Background

Nowadays, fan products are more and more widely applied in the industry, as a typical ventilation device, a multi-wing centrifugal fan is a device for converting kinetic energy into potential energy, and the multi-wing centrifugal fan is the first choice in designing kitchen range hoods and bathroom warmer fans by virtue of the advantages of small size, low noise, high wind pressure and the like. However, the existing centrifugal fan has the problems of large volume, more parts, complex installation, large use noise, low fan efficiency, high energy consumption and the like. And each part needs to develop a corresponding die, so that the die opening cost is high, and the time period is long. Therefore, a light, comfortable, efficient and energy-saving bathroom heater needs to be researched and designed to meet the daily life requirements of people.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a two-way formula multiple wing centrifugal fan impeller, includes leaf roof, leaf medium plate, leaf bottom plate, wheel hub and a plurality of blade, and leaf roof, leaf medium plate and leaf bottom plate are the annular and mutual parallel arrangement in proper order, and all blade circumference arrays are arranged, and the upper end of all blades is connected to the leaf roof, and the lower extreme of all blades is connected to the leaf bottom plate, and wheel hub installs on the leaf medium plate, and all blades are connected to the leaf medium plate, the blade is two-way blade.

Preferably, the bidirectional blades comprise a forward blade and a backward blade, the forward blade is connected with the backward blade, the forward blade is inclined in the clockwise direction, and the backward blade is inclined in the counterclockwise direction.

Preferably, the blade top plate comprises an inner ring surface, the outer side of the upper end of the forward blade is connected with the inner ring surface of the blade top plate, and the lower end surface of the forward blade is connected with the upper surface of the blade bottom plate.

Preferably, the backward vane is provided with an installation opening, and the outer sides of the inner plates of the vane are respectively embedded into the installation opening.

Preferably, in the above technical solution, an upper surface of the blade top plate is flush with an upper end surface of the forward blade, and a thickness of the blade top plate is greater than a thickness of the blade bottom plate.

Preferably, in the above technical solution, a ratio of a length of the cross section of the forward blade to a length of the cross section of the backward blade is 6: 4.

As the optimization of the technical scheme, the hub is of a hemispherical structure with hollow inside, the middle part of the hub is provided with a sleeve, and the periphery of the hub is connected with the middle blade plate.

Preferably, the spherical surface of the hub is provided with a plurality of hollow holes uniformly arranged at intervals.

Preferably, the sleeve is provided with a plurality of reinforcing ribs on the periphery.

Preferably, in the above technical solution, the blade top plate, the blade middle plate, the blade bottom plate, the hub, the blades, and the reinforcing ribs are integrally formed.

The utility model has the advantages that: the utility model provides a two-way type multi-wing centrifugal fan impeller, whole light and handy portable, simple process, simple to operate. The impeller is integrally designed in structure, and compression molding is carried out, so that the mold structure is greatly simplified, the molding precision and quality are improved, and the mold opening period, the cost and the subsequent maintenance cost are greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of another angle of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, a bidirectional multi-blade centrifugal fan impeller comprises a blade top plate 1, a blade middle plate 2, a blade bottom plate 3, a hub 4 and a plurality of blades 5, wherein the blade top plate 1, the blade middle plate 2 and the blade bottom plate 3 are all annular and are sequentially arranged in parallel, all the blades 5 are circumferentially arrayed around the axial lead of the blade top plate 1, the blade top plate 1 is connected with the upper ends of all the blades 5, the blade bottom plate 3 is connected with the lower ends of all the blades 5, the hub 4 is installed on the blade middle plate 2, the blade middle plate 2 is connected with all the blades 5, and the blades 5 are bidirectional blades. The blade top plate 1, the blade middle plate 2 and the blade bottom plate 3 are all designed by circular rings, pneumatic loss is reduced, and stability and strength of the impeller during high-speed rotation are improved. In the present embodiment, the number of the blades 5 is 41.

Further, two-way blade is including preceding blade 6 and backward blade 7, and preceding blade 6 links to each other with backward blade 7, and preceding blade 6 inclines along the clockwise, and backward blade 7 inclines towards the counter-clockwise. When the impeller rotates clockwise, wind is generated mainly by the forward blades 6, and when the impeller rotates anticlockwise, wind is generated mainly by the backward blades 7.

Further, the blade top plate 1 comprises an inner ring surface 8, the outer side of the upper end of the forward blade 6 is connected with the inner ring surface 8 of the blade top plate 1, and the lower end surface of the forward blade 6 is connected with the upper surface of the blade bottom plate 3.

Furthermore, the backward vane 7 is provided with a mounting opening 9, and the outer sides of the middle vane plates 2 are respectively embedded into the mounting opening 9. Embedding is 5mm in the blade 7 behind the outside of leaf medium plate 2, effectively improves 5 rigidity of blade, and the inboard of leaf medium plate 2 links to each other with wheel hub 4, and effective connection thickness is 3mm, guarantees that the impeller bears the stability under the high moment of torsion load.

The connecting angle between the forward blade 6 and the blade top plate 1 and the connecting angle between the forward blade 6 and the blade bottom plate 3 are designed to be round-angle smooth transition respectively, so that the manufacturability of impeller manufacturing can be improved.

Further, the upper surface of the blade top plate 1 is flush with the upper end surface of the forward blade 6, and the thickness of the blade top plate 1 is greater than that of the blade bottom plate 3. Compared with the blade bottom plate 3, the blade top plate 1 is designed to be a small circular ring with large thickness, and the blade bottom plate 3 is designed to be a large circular ring with small thickness. The blade top plate 1 is small in circular ring and large in thickness, so that the top stress can be improved, and the axial air inlet of the impeller is optimized. The stability of impeller when guaranteeing high-speed rotation, the circulation of impeller bottom air is guaranteed in the small thickness design, improves fan efficiency. The blade bottom plate 3 is large, the circular ring is small in thickness, the stability of the impeller is guaranteed when high-speed rotation is guaranteed, circulation of air at the bottom of the impeller is guaranteed, and fan efficiency is improved.

Further, the ratio of the length of the cross section of the forward blade 6 to the length of the cross section of the backward blade 7 is 6: 4. The blade profiles of the forward blade 6 and the backward blade 7 are both arc-shaped wing structures, so that the high-speed rotation aerodynamic noise of the impeller is reduced. And the connecting thickness is increased at the transition position between the forward direction and the backward direction, so that the completeness of the blade 5 is ensured under the pneumatic impact of forward and reverse rotation of the impeller. The quantity of blade 5 is 41, evenly distributed on the circumferencial direction, and blade 5 effective height is 68mm, improves the full pressure efficiency of impeller the maximize, improves the wind pressure when impeller anticlockwise rotation and the wind speed when clockwise rotating, realizes two-way pivoted demand.

Further, wheel hub 4 is the hemispherical structure of inside fretwork, and wheel hub 4's middle part is equipped with sleeve 10, and wheel hub 4 connects leaf medium plate 2 all around.

Furthermore, a plurality of hollow holes 11 are formed in the spherical surface of the hub 4 at even intervals. In the present embodiment, the hollow hole 11 is an elliptical hole. The hollowed-out holes 11 can reduce the overall quality of the impeller. The hub 4 is the hemispherical structure of inside fretwork, under the condition of same materials, effectively improves impeller anti-wind pressure ability, prolongs the life of impeller. The sleeve 10 is used for being connected with the motor shaft, and a plurality of strengthening ribs 12 are arranged around the sleeve 10, so that the fatigue resistance of the joint is improved, and the service life of the impeller is prolonged.

Further, the blade top plate 1, the blade middle plate 2, the blade bottom plate 3, the hub 4, the blades 5 and the reinforcing ribs 12 are integrally formed.

In this embodiment, the outer diameter of the impeller is phi 154mm, the total height is 70mm, and the rated rotation speed is 1250 r/min. Tests show that when the impeller rotates anticlockwise, the maximum rotating speed of the impeller is 1250r/min, the maximum wind pressure is 115Pa, and the maximum wind speed is about 16 m/s. When the fan rotates clockwise, the maximum wind speed is 1239r/min, the maximum wind pressure is nearly 100Pa, and the maximum wind speed is 15.5m/s, so that the usability of the forward and reverse rotating fan is realized.

It is worth mentioning that the technical features such as the motor that the utility model discloses a patent application relates to should be regarded as prior art, and the concrete structure of these technical features, theory of operation and the control mode that may involve, spatial arrangement mode adopt the conventional selection in this field can, should not be regarded as the invention point of the utility model discloses a do not do further specifically expand the detailed description.

Having described in detail preferred embodiments of the present invention, it is to be understood that modifications and variations can be made by persons skilled in the art without inventive faculty, and therefore all technical solutions which can be obtained by a person skilled in the art based on the concepts of the present invention through logic analysis, reasoning or limited experimentation will fall within the scope of protection defined by the claims.

Claims

1. The utility model provides a two-way formula multi-wing centrifugal fan impeller, its characterized in that includes leaf roof, leaf medium plate, leaf bottom plate, wheel hub and a plurality of blade, and leaf roof, leaf medium plate and leaf bottom plate are the annular and mutual parallel arrangement in proper order, and all blade circumference arrays are arranged, and the upper end of all blades is connected to the leaf roof, and the lower extreme of all blades is connected to the leaf bottom plate, and wheel hub installs on the leaf medium plate, and all blades are connected to the leaf medium plate, the blade is two-way blade.

2. The impeller of claim 1, wherein the bi-directional blades include forward blades and backward blades, the forward blades are connected to the backward blades, the forward blades are inclined in a clockwise direction, and the backward blades are inclined in a counterclockwise direction.

3. The impeller of claim 2, wherein the top plate includes an inner annular surface, the outer side of the upper end of the forward blade is connected to the inner annular surface of the top plate, and the lower end surface of the forward blade is connected to the upper surface of the bottom plate.

4. A bi-directional multi-blade centrifugal fan impeller according to claim 3, wherein the backward blades are provided with mounting openings, and outer sides of the middle blades are respectively inserted into the mounting openings.

5. The bi-directional multi-blade centrifugal fan impeller of claim 4, wherein the top surface of the tip plate is flush with the upper end surfaces of the forward-facing blades, and the tip plate has a thickness greater than that of the base plate.

6. A bi-directional multi-bladed centrifugal fan impeller according to claim 5 in which the ratio of the length of the forward blade cross-section to the length of the rearward blade cross-section is 6: 4.

7. The impeller of the bidirectional multi-blade centrifugal fan as claimed in claim 6, wherein the hub has a semi-spherical structure with a hollow interior, a sleeve is disposed in the middle of the hub, and the middle blade plate is connected to the periphery of the hub.

8. The impeller of a bidirectional multi-blade centrifugal fan as claimed in any one of claims 1 to 7, wherein the hub has a plurality of holes on its spherical surface at regular intervals.

9. The impeller of a bidirectional multi-blade centrifugal fan as claimed in claim 7, wherein the sleeve has a plurality of ribs around it.

10. The impeller of claim 9, wherein the blade top plate, the blade middle plate, the blade bottom plate, the hub, the blades, and the reinforcing ribs are integrally formed.