CN216975322U - Impeller applicable to 6-39 series high-efficiency centrifugal ventilator - Google Patents
Impeller applicable to 6-39 series high-efficiency centrifugal ventilator Download PDFInfo
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- CN216975322U CN216975322U CN202123411227.XU CN202123411227U CN216975322U CN 216975322 U CN216975322 U CN 216975322U CN 202123411227 U CN202123411227 U CN 202123411227U CN 216975322 U CN216975322 U CN 216975322U
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Abstract
The utility model discloses an impeller suitable for a 6-39 series high-efficiency centrifugal ventilator, which comprises a front disc, blades welded with the front disc and a middle disc welded with the blades, wherein the middle disc is divided into a tooth-shaped middle disc and a hub disc, the hub disc is arranged inside the tooth-shaped middle disc, a front disc spigot ring used for optimizing an outlet gas flow field is arranged on one side of the front disc, and a rectifying ring is designed at one end of the front disc spigot ring. The blades are backward arc-shaped blades, so that the loss of airflow flowing is reduced, the outer edge of the outlet of the front disc of the impeller is provided with a rectifying ring to reduce the loss of flow field eddy of the outlet of the impeller, the middle disc of the impeller is designed into a zigzag shape to reduce the rotational inertia of the impeller and the stress concentration field of the middle disc between the blades and the impeller, the starting torque of the impeller is reduced, the energy consumption is reduced, and the structural strength of the impeller is enhanced.
Description
Technical Field
The utility model relates to the technical field of efficient centrifugal ventilators, in particular to an impeller applicable to 6-39 series efficient centrifugal ventilators.
Background
At present, the front disk of a commonly used 6-39 series centrifugal ventilator impeller is conical, blades are of a backward straight plate type, the inlet edges of the blades are parallel to the axis of the ventilator, a rectifying ring is not designed on the excircle of the outlet of the front disk, so that the installation angle of the inlet of the impeller is the same on all the inlet points of the blades, the air flow speed at the inlet points is uneven, the air flow speed at the inlet points is also the same as the air flow speed at the inlet points, the air flow on all the points cannot enter the impeller without impact, the uneven field of the air flow at the turning position of the inlet of the gyrorotron is serious, the outlet air flow vortex area is serious, the operating efficiency of the ventilator is influenced to a great extent, and the energy consumption of the ventilator is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an impeller of a 6-39 series high-efficiency centrifugal ventilator, which is used for solving the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a be applicable to 6-39 series high-efficient centrifugal fan impeller, including the head disk, with head disk welded blade and with blade welded well dish, well dish divide into profile of tooth head disk and hub disk, the hub disk set up in the inside of profile of tooth well dish, one side of head disk is provided with the head disk spigot circle that is used for optimizing export gas flow field, the one end design of head disk spigot circle has the fairing circle.
Furthermore, the inlet pneumatic molded line of the front disc is arc-shaped and is used for reducing uneven sites when gas enters the working face of the front disc.
Further, the blades are backward arc-shaped.
Furthermore, a blade inlet arc bevel is arranged between the front disc and the middle disc for ensuring smooth transition of the airflow in the front disc.
Furthermore, the front disc spigot ring and the front disc are welded.
Furthermore, the central disc and the hub disc are in a split welding structure and used for enhancing stress at the joint of the central disc.
The wheel hub disc is characterized by further comprising a rear disc, a through hole is formed between the rear disc and the front disc in a buckling mode, an air inlet guide disc is arranged on the edge of the through hole of the rear disc, a main shaft penetrates through the through hole, and the wheel hub disc is connected with the main shaft through a hinged bolt.
Furthermore, the diameter of the inlet of the blade at the blade inlet arc beveled side of the front disk is larger than that of the blade at the blade inlet arc beveled side of the rear disk.
Furthermore, the central disc adopts a tooth-shaped structure, and the blades are welded on the saw-shaped connecting edge.
Furthermore, an anti-abrasion plate is arranged between the blade and the middle disc, and the anti-abrasion plate, the blade and the middle disc are welded.
Compared with the prior art, the utility model has the beneficial effects that:
the front disc inlet is designed by adopting an arc-shaped molded line, the front disc inlet is provided with a spigot ring structure, and the arc-shaped molded line on the spigot ring is tangent to the front disc arc-shaped molded line and is in smooth transition, so that the flowing performance of air flow is enhanced;
the blade inlet is chamfered in arc, and the diameter of the front disk side blade inlet is larger than that of the rear disk side blade inlet so as to adapt to the phenomenon of uneven airflow at the turning position of the impeller inlet;
the blades are backward arc-shaped blades, so that the loss of air flow is reduced, the outer edge of the outlet of the front disc of the impeller is provided with a rectifying ring so as to reduce the eddy current loss of the flow field at the outlet of the impeller, the middle disc of the impeller is designed into a zigzag shape so as to reduce the rotational inertia of the impeller and the stress concentration field of the middle disc between the blades and the impeller, the starting torque of the impeller is reduced, the energy consumption is reduced, and the structural strength of the impeller is enhanced.
Drawings
FIG. 1 is a cross-sectional view of an impeller for a 6-39 series high efficiency centrifugal fan in accordance with the present invention;
FIG. 2 is a cross-sectional view of an impeller for a high efficiency centrifugal fan of the 6-39 series according to the present invention;
FIG. 3 is an assembly view of a main shaft of an impeller of a high-efficiency centrifugal fan suitable for 6-39 series;
in the figure: 1. a front plate; 11. a front disc stop ring; 2. a middle disc; 21. a tooth-shaped middle disc; 22. a hub plate; 3. a rectifying ring; 4. a blade; 5. a wear-resistant guard plate; 6. the arc of the blade inlet is chamfered; 7. a main shaft; 8. an air inlet flow guide disc; 9. and a back plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the case of the example 1, the following examples are given,
referring to fig. 1-3, in the embodiment of the present invention, an impeller for a 6-39 series high-efficiency centrifugal ventilator includes a front disc 1, blades 4 welded to the front disc 1, and a middle disc 2 welded to the blades 4, where the middle disc 2 is divided into a tooth-shaped middle disc 21 and a hub disc 22, the hub disc 22 is disposed inside the tooth-shaped middle disc 21, a front disc spigot ring 11 for optimizing an outlet gas flow field is disposed on one side of the front disc 1, and a rectifying ring 3 is designed at one end of the front disc spigot ring 11 for stabilizing the outlet gas flow field of the impeller.
The inlet of the front disc 1 is designed by adopting an arc-shaped line, the inlet of the front disc 1 is provided with a front disc spigot ring 11, and the arc-shaped line on the spigot ring is tangent to the arc-shaped line of the front disc 1 and is in smooth transition, so that the flowing performance of air flow is enhanced; the inlet of the blade 4 is chamfered in arc, and the diameter of the inlet of the blade at the side of the front disk 1 is larger than that of the inlet of the blade at the side of the rear disk, so that the phenomenon of uneven airflow at the turning position of the inlet of the impeller is adapted; the blades 4 are backward arc-shaped blades, the loss of air flow is reduced, the outer edge of the outlet of the front disc of the impeller is provided with a rectifying ring so as to reduce the eddy current loss of the flow field of the outlet of the impeller, the middle disc 2 of the impeller is designed into a zigzag shape so as to reduce the rotational inertia of the impeller and the stress concentration field of the middle disc between the blades and the impeller, the starting torque of the impeller is reduced, the energy consumption is reduced, the structural strength of the impeller is enhanced, the pneumatic molded line of the inlet of the front disc 1 is arc-shaped, and the uneven field of the gas when the gas enters the working surface of the front disc 1 is reduced.
The middle disc 2 part consists of two parts, namely a tooth-shaped middle disc 21 and a hub disc 22, wherein the tooth-shaped middle disc 21 is thinner than the hub disc 22, the hub disc 22 is connected with the main shaft 7 through bolts, the torsion stress is complex, and the structural design is realized by taking a thicker plate to increase the torsional rigidity of the middle disc 2, so that the design not only meets the strength and rigidity requirements of the impeller design, but also reduces the design cost of the impeller.
The blades 4 are backward arc-shaped, the installation angle of the outlet of the blades 4 is used for ensuring the circulation efficiency of air flow and reducing the loss in the flowing process, wherein the loss in the flowing process of the air flow is reduced by the working surface of the blades 4, the acting efficiency of the blades 4 is improved, the arc-shaped molded line of the front disk of the impeller is tangent to the arc-shaped molded line of the front disk spigot ring, the smooth transition of the air flow is ensured, a blade inlet arc bevel 6 is arranged between the front disk 4 and the middle disk 2 and is used for ensuring the smooth transition of the air flow in the front disk 4, the front disk spigot ring 11 is welded with the front disk 1, the middle disk 2 and the hub disk 22 are in a split welding structure and are used for enhancing the stress at the joint of the middle disk 2,
the device also comprises a rear disk 9, the rear disk 9 and the front disk 1 are buckled to form a through hole, the edge of the through hole of the rear disk 9 is provided with an air inlet flow guide disk 8, a main shaft 7 penetrates through the through hole, a hub disk 22 and the main shaft 7 are connected by a hinged bolt, the inlet diameter of the blade at the blade inlet circular arc beveling 6 side of the front disk 1 is larger than the inlet diameter of the blade at the blade inlet circular arc beveling 6 side of the rear disk 9, the middle disc 2 adopts a tooth-shaped structure, the blades 4 are welded on the saw-shaped connecting edge, the rotational inertia of the whole impeller is designed to be smaller, and can remove the place where the modal stress of the middle disk between the blades is relatively concentrated, the wear-resistant plate 5 is arranged between the blade 4 and the middle disk 2, the wear-resistant plate 5, the blade 4 and the middle disk 2 are welded to increase the welding strength of the blade and the middle disk, meanwhile, for the impeller with serious abrasion, the welding seam between the blade and the back disk can be protected.
The flange of the main shaft 7 is connected with the impeller hub plate 22 through a hinge bolt, the rotating power of the motor is transmitted to the impeller through the main shaft 7, the impeller rotates to convert mechanical energy into high-efficiency pressure energy, and gas are conveyed to the impeller and then enter the fan impeller through the inlet of the inlet arc-shaped front disc 1 and the arc of the blade inlet, are obliquely cut uniformly without turbulent flow, the pneumatic static pressure is improved through the rotation work of the impeller, the hinge bolt is used for connecting the main shaft and the 6-39 high-efficiency centrifugal fan impeller, and the torque of the main shaft is transmitted to the impeller. The design improves the non-uniform phenomenon of gas at the inlet of the front disc of the impeller, thereby improving the work efficiency of the whole fan.
Compared with the prior art, the utility model has the advantages that: the inlet of the whole front disc 1 is in an arc-shaped design, the pneumatic efficiency is high, the surface flow field is uniform during working, the operating efficiency of the fan is effectively improved, and the energy-saving effect is achieved; the blades 4 are designed in a circular arc oblique cutting mode, namely the diameter of the inlet of the front disk side blade is larger than that of the inlet of the rear disk side blade, so that the attack angle of airflow at the inlet of the blades is reduced, the phenomenon of non-uniformity of airflow entering an impeller is reduced, and the existence of a vortex area is avoided to the maximum extent; the impeller adopts a backward arc design, so that the loss in the air flow flowing process is reduced, and the acting efficiency of the blade is improved; the center plate of the impeller is designed into a sawtooth shape so as to reduce the rotational inertia of the impeller and the center plate modal stress concentration field between the blades and the impeller, so that the design not only reduces the starting torque of the impeller and reduces the energy consumption, but also enhances the structural strength of the impeller.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The impeller is characterized by comprising a front disc (1), blades (4) welded with the front disc (1) and a middle disc (2) welded with the blades (4), wherein the middle disc (2) is divided into a tooth-shaped middle disc (21) and a hub disc (22), the hub disc (22) is arranged inside the tooth-shaped middle disc (21), a front disc spigot ring (11) used for optimizing an outlet gas flow field is arranged on one side of the front disc (1), and a rectifying ring (3) is designed at one end of the front disc spigot ring (11).
2. A high efficiency centrifugal ventilator wheel suitable for use in the 6-39 series as claimed in claim 1 wherein the inlet aerodynamic profile of the front disc (1) is curved to reduce uneven spot on the gas as it enters the working surface of the front disc (1).
3. A high efficiency centrifugal ventilator wheel suitable for the 6-39 series as claimed in claim 1 wherein the vanes (4) are rearwardly curved.
4. An efficient centrifugal ventilator impeller suitable for 6-39 series according to claim 1, characterized in that a blade inlet circular arc chamfer (6) is arranged between the front disk (1) and the middle disk (2) for ensuring smooth transition of air flow in the front disk (1).
5. A high efficiency centrifugal ventilator wheel suitable for the 6-39 series according to claim 1 wherein the front disc spigot ring (11) is welded to the front disc (1).
6. The impeller for the high-efficiency centrifugal ventilator in the 6-39 series is characterized in that the central disc (2) and the hub disc (22) are in a split welding structure and used for enhancing the stress at the joint of the central disc (2).
7. The impeller for the high-efficiency centrifugal ventilator suitable for the 6-39 series is characterized by further comprising a rear disc (9), a through hole is formed by buckling the rear disc (9) and the front disc (1), an air inlet guide disc (8) is arranged on the edge of the through hole of the rear disc (9), a main shaft (7) penetrates through the through hole, and the hub disc (22) is connected with the main shaft (7) through a hinged bolt.
8. A high efficiency centrifugal ventilator wheel suitable for the 6-39 series of claim 7 wherein the blade inlet diameter on the blade inlet circular arc chamfer (6) side of the front disk (1) is larger than the blade inlet diameter on the blade inlet circular arc chamfer (6) side of the back disk (9).
9. A high efficiency centrifugal ventilator wheel suitable for the 6-39 series according to claim 1 characterized in that the central disc (2) is of a castellated construction and the blades (4) are welded to a saw-shaped rim.
10. A high-efficiency centrifugal ventilator impeller suitable for the 6-39 series according to claim 1, characterized in that a wear plate (5) is arranged between the blades (4) and the central disc (2), and the wear plate (5), the blades (4) and the central disc (2) are welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123411227.XU CN216975322U (en) | 2021-12-31 | 2021-12-31 | Impeller applicable to 6-39 series high-efficiency centrifugal ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123411227.XU CN216975322U (en) | 2021-12-31 | 2021-12-31 | Impeller applicable to 6-39 series high-efficiency centrifugal ventilator |
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| Publication Number | Publication Date |
|---|---|
| CN216975322U true CN216975322U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123411227.XU Active CN216975322U (en) | 2021-12-31 | 2021-12-31 | Impeller applicable to 6-39 series high-efficiency centrifugal ventilator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115740879A (en) * | 2022-12-19 | 2023-03-07 | 重庆一鼓风洞科技有限责任公司 | Manufacturing method of double-suction three-dimensional flow impeller assembly for large-scale high-temperature centrifugal fan |
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2021
- 2021-12-31 CN CN202123411227.XU patent/CN216975322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115740879A (en) * | 2022-12-19 | 2023-03-07 | 重庆一鼓风洞科技有限责任公司 | Manufacturing method of double-suction three-dimensional flow impeller assembly for large-scale high-temperature centrifugal fan |
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