阅读说明：本技术 一种采用仿海豚流线型叶片的叶轮 (Impeller with dolphin-like streamline blades ) 是由 林耀朋 王斌 韩俊 陈晓红 于 2020-08-06 设计创作，主要内容包括：本发明公开了一种采用仿海豚流线型叶片的叶轮,包括连接套环,所述连接套环的表面设置有限位紧固组件,所述连接套环的外侧表面皆环绕插接安装有叶片,所述叶片与连接套环之间设置有定位卡接组件。本发明通过采用从前缘到尾缘逐渐变厚的叶片,使得叶轮获得较大的流道截面高宽比,降低了流体泄漏损失和涡流损失,从而提高了叶轮的做功效率；减小叶片在流道出口处的宽度,形成狭窄的尾缘以减小尾迹区域,从而降低尾迹损失,叶轮采用仿海豚线型的叶片,提高了进风的顺畅性,减少了紊流降低噪音,由于叶片侧面的棱线是模拟海豚线型,可适当增大截面,增加进风面积而提高风量,增大高效区,增大性能调节范围。(The invention discloses an impeller adopting dolphin-like streamline blades, which comprises a connecting lantern ring, wherein a limiting fastening component is arranged on the surface of the connecting lantern ring, blades are annularly inserted and installed on the outer side surface of the connecting lantern ring, and a positioning clamping component is arranged between the blades and the connecting lantern ring. The impeller has the advantages that the blades gradually become thicker from the front edge to the tail edge are adopted, so that the impeller obtains a larger flow passage section height-width ratio, the fluid leakage loss and the eddy loss are reduced, and the work doing efficiency of the impeller is improved; the width of the blade at the outlet of the runner is reduced, a narrow tail edge is formed to reduce the tail trace area, so that the tail trace loss is reduced, the blade wheel adopts the blade imitating the dolphin line type, the air inlet smoothness is improved, the turbulence is reduced, the noise is reduced, the ridge on the side surface of the blade is the imitating dolphin line type, the cross section can be properly increased, the air inlet area is increased, the air quantity is increased, the high-efficiency area is increased, and the performance adjusting range is enlarged.)

1. The utility model provides an adopt impeller of imitative dolphin's streamlined blade, includes forebay (22) and connection lantern ring (4), its characterized in that: the inboard of head disc (22) is provided with chassis (21), adapter ring (4) are installed through the pivot to the inboard on chassis (21), the surface of adapter ring (4) is provided with spacing fastening components (7), the outside surface of adapter ring (4) all encircles the grafting and installs blade (8), be provided with location joint subassembly (19) between blade (8) and adapter ring (4), the surface both sides of blade (8) are provided with first arc piece (11) respectively, one side of first arc piece (11) is provided with second arc piece (13), be provided with well pitch arc (14) between first arc piece (11) and second arc piece (13), one side of well pitch arc (14) is provided with chord line (12).

2. The impeller of claim 1, which is made of dolphin-like streamline blades, and is characterized in that: spacing fastening components (7) are including seting up spacing hole (15) in the connecting collar (4) outside surface, the inboard screw thread movable mounting in spacing hole (15) has spacing bolt (6), and the outer end of spacing bolt (6) all integrated into one piece be provided with anticreep cap (3).

3. An impeller with dolphin-like streamline vanes according to claim 1 or 2, characterized in that: the inboard of connecting lantern ring (4) is provided with cup joints chamber (5), and the quantity of stop cock (6) is four and arranges around connecting lantern ring (4) surface equidistance.

4. The impeller of claim 1, which is made of dolphin-like streamline blades, and is characterized in that: the shape of the blade (8) is a dolphin streamline shape, and the blade (8) consists of a raised ridge wing (1) with a radian on one side and an abdominal wing (2) with a bent arc on one side and contracting.

5. The impeller of claim 1, which is made of dolphin-like streamline blades, and is characterized in that: the thickness of the blade (8) gradually increases from the front edge to the tail edge, and the pressure surface and the suction surface at the tail part of the blade (8) are both smooth streamline curved surfaces and are condensed at the tail edge.

6. The impeller of claim 1, which is made of dolphin-like streamline blades, and is characterized in that: the positioning clamping assembly (19) comprises an insertion groove (18) formed in the outer side of the connecting sleeve ring (4), a magnet piece (17) is fixedly mounted at the bottom end of the inside of the insertion groove (18), an insertion column (20) is movably mounted on the inner side of the insertion groove (18), a magnet block (9) is fixedly mounted at one end, close to the inner side of the insertion groove (18), of the insertion column (20), and the outer end of the insertion column (20) is connected with the blade (8).

7. An impeller with dolphin-like streamline vanes according to claim 2 or 6, characterized in that: the outer side surfaces of the inserting column (20) and the limiting bolt (6) are provided with external threads (10), and the inner walls of the inserting groove (18) and the limiting hole (15) are provided with internal threads (16).

8. The impeller of claim 1, which is made of dolphin-like streamline blades, and is characterized in that: the mean camber line (14) is offset from the chord line (12) on the side close to the first cambered sheet (11).

Technical Field

The invention relates to the technical field of centrifugal fans, in particular to an impeller adopting dolphin-like streamline blades.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; the wind source of the wind tunnel and the inflation and propulsion of the air cushion ship, etc., and the impeller is an important core component of the centrifugal fan.

In present impeller technique, promote the amount of wind and the noise reduction is difficult to realize simultaneously, and the windage increases, and the inefficiency of efficiency, the noise is big, and the impeller inefficiency also influences the power consumption increase of fan, and the impeller is whole generally all to be fixed structure simultaneously, when certain blade damages alone, can only wholly change the impeller in real time, has caused the waste of resource, and the impeller takes place to become flexible easily in long-term use simultaneously.

Disclosure of Invention

The invention aims to provide an impeller adopting dolphin-like streamline blades to solve the problems in the background device.

In order to achieve the above purpose, the present invention provides the following device solutions:

the utility model provides an adopt impeller of imitative dolphin streamline form blade, includes the preceding dish and the adapter ring, the inboard of preceding dish is provided with the chassis, the adapter ring is installed through the pivot in the inboard on chassis, the surface of adapter ring is provided with spacing fastening components, the outside surface of adapter ring is all around grafting installs the blade, be provided with location joint subassembly between blade and the adapter ring, the surperficial both sides of blade are provided with first arc piece respectively, one side of first arc piece is provided with the second arc piece, be provided with well pitch arc between first arc piece and the second arc piece, one side of well pitch arc is provided with the chord line.

As a further scheme of the invention: the limiting fastening assembly comprises a limiting hole formed in the outer side surface of the connecting sleeve ring, a limiting bolt is movably mounted on the inner side thread of the limiting hole, and an anti-falling cap is arranged at the outer end of the limiting bolt in an integrated mode.

As a still further scheme of the invention: the inboard of the connecting sleeve ring is provided with cup joints the chamber, and the quantity of spacing bolt is four and arranges around connecting sleeve ring surface equidistance.

As a further scheme of the invention: the shape of the blade is a dolphin streamline shape, and the blade consists of a raised ridge wing with a radian on one side and an abdominal wing with a contracted curved arc on one side.

As a further scheme of the invention: the thickness of the blade gradually increases from the front edge to the tail edge, and the pressure surface and the suction surface of the tail part of the blade are both smooth streamline curved surfaces and are condensed at the tail edge.

As a further scheme of the invention: the positioning and clamping assembly comprises an insertion groove arranged on the outer side of the connecting sleeve ring, a magnet piece is fixedly mounted at the bottom end inside the insertion groove, an insertion column is movably mounted on the inner side of the insertion groove, a magnet block is fixedly mounted at one end, close to the inner side of the insertion groove, of the insertion column, and the outer end of the insertion column is connected with the blade.

As a further scheme of the invention: the outer side surfaces of the inserting column and the limiting bolt are provided with external threads, and the inner walls of the inserting groove and the limiting hole are provided with internal threads.

As a further scheme of the invention: the mean camber line is located offset from the chord line on a side adjacent the first cambered sheet.

Compared with the prior device, the invention has the beneficial effects that:

the impeller adopts the dolphin-like blades, and the blades gradually become thicker from the front edge to the tail edge, so that the impeller obtains a larger flow passage section height-width ratio, the fluid leakage loss and the eddy loss are reduced, and the work efficiency of the impeller is improved; the pressure surface and the suction surface at the tail part of the blade are both smooth streamline curved surfaces and are condensed at the tail edge, the width of the blade at the outlet of the flow channel is reduced, a narrow tail edge is formed to reduce a tail trace area, so that the tail trace loss is reduced, the impeller adopts the blade imitating the dolphin line type, the smoothness of air inlet is improved, turbulence is reduced, noise is reduced, the ridge line at the side surface of the blade is the imitating dolphin line type, the section can be properly increased, the air inlet area is increased, the air volume is increased, the high-efficiency area is increased, and the performance adjusting range is enlarged.

When a single blade is broken in use, the invention can manually twist the insertion column to perform real-time threaded rotation on the inner side of the insertion groove, the insertion column is driven to move outwards by thread twisting, so that the blade can be separated from the connecting lantern ring in real time, and then reverse operation is performed to replace a new blade in real time, thereby avoiding resource waste caused by the need of replacing the whole impeller, and simultaneously, the connecting lantern ring can be inserted, engaged and clamped with the output end of the driving mechanism by the limit bolt, so that the impeller is prevented from falling off in the long-term use process.

Drawings

FIG. 1 is a front view of a dolphin-like streamline vane

FIG. 2 is a schematic view of the structure of the mounting and connecting part of an impeller adopting a dolphin-like streamline vane.

FIG. 3 is a top view of the blade part structure of an impeller adopting a dolphin-like streamline blade.

Figure 4 is a side view of a connecting collar portion of an impeller employing a dolphin-like streamlined blade.

FIG. 5 is a schematic view of a part of the structure of a positioning and clamping assembly of an impeller with a dolphin-like streamline vane.

FIG. 6 is a side view of the blade part structure of an impeller adopting a dolphin-like streamline blade.

Shown in the figure: 1. a ridge wing; 2. an abdominal wing; 3. an anti-drop cap; 4. a connecting lantern ring; 5. a socket cavity; 6. a limit bolt; 7. a limiting fastening component; 8. a blade; 9. a magnet block; 10. an external thread; 11. a first arcuate segment; 12. a chord line; 13. a second arc piece; 14. a mean camber line; 15. a limiting hole; 16. an internal thread; 17. a magnet piece; 18. inserting grooves; 19. positioning the clamping assembly; 20. inserting the column; 21. a chassis; 22. and a front disc.

Detailed Description

The embodiments of the present invention will be described in detail and fully with reference to the accompanying drawings, wherein the description is only for the purpose of illustrating the invention. 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.

Referring to fig. 1 to 6, in an embodiment of the present invention, an impeller using a dolphin-like streamline vane includes a front disc 22 and a connecting collar 4, a chassis 21 is disposed on an inner side of the front disc 22, the connecting collar 4 is mounted on an inner side of the chassis 21 through a rotating shaft, a limiting fastening component 7 is disposed on a surface of the connecting collar 4, a vane 8 is mounted on an outer surface of the connecting collar 4 in a surrounding and inserting manner, a positioning and clamping component 19 is disposed between the vane 8 and the connecting collar 4, a first arc piece 11 is disposed on each of two sides of a surface of the vane 8, a second arc piece 13 is disposed on one side of the first arc piece 11, a middle arc line 14 is disposed between the first arc piece 11 and the second arc piece 13, a chord line 12 is disposed on one side of the middle arc line 14, the limiting fastening component 7 includes a limiting hole 15 disposed on an outer surface of the connecting collar 4, a limiting, and the outer end of the limit bolt 6 is provided with the anti-drop cap 3 by integral forming, the output end of the driving mechanism connected with the impeller can be punched, the sleeve cavity 5 is sleeved on the output end of the driving mechanism, the limit bolt 6 is twisted to be inserted into the punched hole for clamping and limiting, the output end of the connecting sleeve ring 4 and the output end of the driving mechanism can be inserted and clamped by the limit bolt 6, and the impeller is prevented from dropping off in the long-term use process.

The inner side of the connecting lantern ring 4 is provided with a socket cavity 5, the number of the limit bolts 6 is four, the limit bolts are distributed around the surface of the connecting lantern ring 4 at equal intervals, the blades 8 are in a dolphin streamline shape, each blade 8 consists of a raised ridge wing 1 with a radian on one side and a ventral wing 2 with a curved arc on one side, the thickness of each blade 8 from the front edge to the tail edge is gradually increased, so that the impeller obtains a larger flow passage section height-width ratio, the fluid leakage loss and the eddy current loss are reduced, the work efficiency of the impeller is improved, the pressure surface and the suction surface at the tail part of each blade 8 are both smooth streamline curved surfaces and are condensed at the tail edge, the width of each blade 8 at the flow passage outlet is reduced, a narrow tail edge is formed to reduce the tail loss, the positioning clamping assembly 19 comprises a splicing groove 18 arranged on the outer side of the connecting lantern ring 4, and a magnet piece 17 is fixedly arranged at the bottom, an inserting column 20 is movably arranged at the inner side of the inserting groove 18, a magnet block 9 is fixedly arranged at one end of the inserting column 20 close to the inner side of the inserting groove 18, the outer end of the inserting column 20 is connected with the blade 8, the outer side surfaces of the inserting column 20 and the limiting bolt 6 are provided with external threads 10, and the inner walls of the inserting groove 18 and the limiting hole 15 are provided with internal threads 16, when a single blade 8 is damaged due to failure, the real-time screw thread rotation can be carried out on the inner side of the insertion groove 18 by manually twisting the insertion column 20, the insertion column 20 is driven to move outwards by screw thread twisting, so that the blade 8 can be separated from the connecting lantern ring 4 in real time, then, the blade 8 is changed in real time by reverse operation, so as to avoid resource waste caused by the need of changing the whole impeller, the position of the camber line 14 deviates from the chord line 12 and is close to one side of the first cambered sheet 11, so that pressure difference is formed between the two sides, and the section of wing profile also has the rotating force for driving the wind wheel.

The working principle is as follows: when the fan is used in industrial production, firstly, the output end of a driving mechanism connected with an impeller is punched, a sleeve cavity 5 is sleeved on the output end of the driving mechanism, a limiting bolt 6 is twisted to be inserted into the punched hole for clamping and limiting, a connecting sleeve ring 4 and the output end of the driving mechanism can be inserted and clamped through the limiting bolt 6 to prevent the impeller from falling off in the long-term use process, in addition, the impeller obtains a larger flow passage section height-width ratio by adopting the blade 8 which gradually becomes thicker from the front edge to the tail edge in the use process, the fluid leakage loss and the eddy current loss are reduced, the work doing efficiency of the impeller is improved, the pressure surface and the suction surface at the tail part of the blade 8 both adopt smooth streamline curved surfaces and are condensed at the tail edge, the width of the blade 8 at the flow passage outlet is reduced, and a narrow tail edge is formed to reduce a tail trace area, thereby reduce the wake loss, the impeller adopts the blade 8 of imitative dolphin line type, the smoothness nature of air inlet has been improved, turbulence noise reduction has been reduced, because the crest line of blade 8 side is the simulation dolphin line type, can suitably increase the cross-section, increase the air inlet area and improve the amount of wind, increase high efficiency area, increase performance control range, simultaneously when certain blade 8 alone breaks down and damages, the artifical twist peg graft post 20 of accessible carries out real-time screw thread rotation in inserting groove 18 inboard, drive peg post 20 outside through the screw thread twist and remove, make blade 8 can break away from in real time with the adapter ring 4, then reverse operation carries out in real time more new blade 8 can.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents, improvements and the like can be made therein without departing from the spirit and scope of the invention.