CN220522875U - Inclined tower type cross-flow fan blade - Google Patents
Inclined tower type cross-flow fan blade Download PDFInfo
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- CN220522875U CN220522875U CN202321183966.4U CN202321183966U CN220522875U CN 220522875 U CN220522875 U CN 220522875U CN 202321183966 U CN202321183966 U CN 202321183966U CN 220522875 U CN220522875 U CN 220522875U
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- 238000003466 welding Methods 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a diagonal tower type cross-flow fan blade, which comprises a plurality of blades arranged on a middle plate, wherein each blade comprises a small blade head and a large blade head which are connected, the left side and the right side of each small blade head are symmetrically or asymmetrically arranged in the vertical direction of orthographic projection, the left side and the right side of each large blade head are asymmetrically arranged, so that each blade is arranged on the middle plate in a diagonal tower type structure, the diagonal tower type design is adopted, when a fan runs, the fan drives air flow to flow out from the cambered surface of the blade, the air can be better discharged from the same place, and the state of reverse wind direction cannot be caused.
Description
Technical Field
The utility model relates to the technical field of fan blades, in particular to a diagonal tower type cross-flow fan blade.
Background
Referring to fig. 6-8, the conventional through-flow fan blade design is formed by welding a plurality of middle-section fan blades, wherein each middle-section fan blade comprises a middle plate and a blade, and the middle plate and the blade of the middle-section fan blade are integrally formed through injection molding; the blades on the middle plate are unevenly distributed, and the blades are in a vertical state from small head to big head when seen from the front, and are slightly tower-shaped at two sides; when the fan blades run, air is radially fed in and radially discharged out, and the air is discharged out along the rotation direction of the circumferential blades; when the distance L between the design of the big end of the blade and the edge of the middle plate is too large, the wind direction can flow in the opposite direction of the blade when the cross-flow fan blade discharges wind.
In addition, after the cross-flow fan blade falls, because the stress point is located in the middle plate, the blade big head which is weak in connection with the middle plate can cause serious cracks. When the product is subjected to the strength test of an independent blade, the blade is failed due to insufficient strength.
Disclosure of Invention
The utility model aims to provide a diagonal tower type through-flow fan blade, which is designed in a diagonal tower type, when a fan runs, the fan drives air flow to be discharged from the cambered surface of the blade, so that the air can be discharged from the same place better, and the state of reverse wind direction cannot be caused.
According to the design of this purpose an inclined tower type cross-flow fan blade, including a plurality of blade that sets up on the medium plate, every blade is including the blade tip and the big end of blade that are connected, and the blade is in orthographic projection's vertical direction, and the left and right sides of every blade tip is symmetrical or asymmetric setting, and the left and right sides of every blade big end is asymmetric setting to make every blade be inclined tower column structure setting on the medium plate, the design of blade inclined tower type strengthens the intensity of blade big end.
The blade is seen from the front independently, and the small end of the blade to the large end of the blade belong to an inclined tower type blade shape; one side of the blade is obliquely arranged on the outer diameter side of the middle plate, and the other side of the blade is directly inclined to the middle plate surface according to a drawing angle (the drawing angle of the blade is generally 1:400/1:300/1:250 and the like).
The big end of blade one end sets up on the medium plate, and the edge of big end of blade one end and medium plate is the next-door neighbour setting to make the big end of blade one end and medium plate edge form zonulae occludens, the through-flow fan blade falls down the back, and the stress point lies in the medium plate, and medium plate and big end of blade zonulae occludens, the intensity of increase blade that can be better reduces the breakage rate, in addition, blade inclined tower type design, during the fan operation, fan drive air current is from blade cambered surface air-out, can be better from same place air-out, can not cause the state that the wind direction is backward flow.
An air outlet channel is formed between two adjacent blades, and one end of the big end of each blade is closely adjacent to the edge of the middle plate, so that an air outlet channel for unidirectional air outlet is formed between the two adjacent blades.
The distance between one end of the big end of the blade and the edge of the middle plate is L, and the distance L is 0mm-0.05mm.
The blades are provided with cambered surfaces matched with the gas flow.
The connection part between the small blade head and the large blade head at one side of the blade is an inclined connection section.
The plurality of blades and the middle plate are combined into a middle-section blade, and the plurality of middle-section blades are combined into a cross-flow blade.
In two adjacent middle section fan blades, the small end of the fan blade in one middle section fan blade is fixed on the middle plate in the other middle section fan blade through splicing or welding.
The blades on each middle section of fan blade and the middle plate are arranged into a whole through injection molding, and the big end of each blade is fixed on one end face of the middle plate.
The other end face of the middle plate of each middle section of fan blade is provided with an inserting groove for inserting the small end of the fan blade.
The beneficial effects of the utility model are as follows:
the left side and the right side of the big head of each blade are asymmetrically arranged, so that each blade is arranged on the middle plate in an inclined tower-shaped structure, and the inclined tower-shaped design of the blades strengthens the strength of the big head of the blade.
After the cross-flow fan blade falls, the stress point is the middle plate, and the middle plate is tightly connected with the big end of the blade, so that the strength of the blade can be better increased, the damage rate is reduced, in addition, due to the design of the inclined tower type blade, when the fan runs, the fan drives air flow to be discharged from the cambered surface of the blade, and the air can be better discharged from the same place.
Because the middle plate is tightly connected with the big end of the blade, the wind direction is not reversed when the blade is out.
Drawings
FIG. 1 is a schematic view of a vane according to an embodiment of the present utility model.
FIG. 2 is a schematic view of a blade plane structure according to an embodiment of the present utility model.
FIG. 3 is a schematic view of a fan blade according to an embodiment of the present utility model.
Fig. 4 is a schematic plan view (top view) of a fan blade according to an embodiment of the utility model.
Fig. 5 is a schematic perspective view of a cross-flow fan blade according to an embodiment of the utility model.
Fig. 6 is a schematic plan view of a prior art vane with symmetrical left and right sides.
Fig. 7 is a schematic view of a middle section fan blade structure in the prior art.
Fig. 8 is a schematic plan view (top view position) of a middle blade of the prior art.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
Referring to fig. 1-5, an inclined tower type cross-flow fan blade comprises a plurality of blades 2 arranged on a middle plate 1, each blade 2 comprises a blade small end 3 and a blade large end 4 which are connected, the left side and the right side of each blade small end 3 are symmetrically or asymmetrically arranged in the vertical direction of orthographic projection, the left side and the right side of each blade large end 4 are asymmetrically arranged, so that each blade 2 is arranged on the middle plate 1 in an inclined tower type structure, the inclined tower type design of the blade strengthens the strength of the blade large end 4, and the mode of symmetrically arranging the left side and the right side is adopted instead of the existing blade 2.
One end of the big end 4 of the blade is arranged on the middle plate 1, one end of the big end 4 of the blade is arranged close to the edge of the middle plate 1, so that one end of the big end 4 of the blade is tightly connected with the edge of the middle plate 1, the distance between one end of the big end 4 of the blade and the edge of the middle plate 1 is reduced, and the condition that the wind direction is reversed when the cross-flow fan blade discharges wind is avoided.
An air outlet channel 5 is formed between two adjacent blades 2, one end of each big head 4 of each blade is arranged close to the edge of the middle plate 1, so that an air outlet channel 5 for unidirectional air outlet is formed between two adjacent blades 2, air flow can only outlet air from one direction, and the situation that the air flow is overlarge along the gaps between the big heads 4 of the blades and the middle plate 1 and the air flow is reversely discharged along the overlarge gaps is avoided.
The distance L between one end of the big end 4 of the blade and the edge of the middle plate 1 is 0mm-0.05mm, preferably 0mm, 0.01mm or 0.02mm.
The blades 2 are provided with cambered surfaces 6 matched with the gas flow, and the cambered surfaces 6 are beneficial to air outlet.
The connection part 7 of the small blade head 3 and the large blade head 4 on one side of the blade 2 is inclined.
The plurality of blades 2 and the middle plate 1 are combined into a middle-section blade, and the plurality of middle-section blades are combined into a cross-flow blade.
In two adjacent middle section fan blades, a small blade head 3 in one middle section fan blade is fixed on a middle plate 1 in the other middle section fan blade through splicing or welding.
The blades 2 on each middle section blade and the middle plate 1 are arranged into a whole through injection molding, and the big end 4 of each blade is fixed on one end face of the middle plate 1.
The other end face of the middle plate 1 of each middle section fan blade is provided with an inserting groove for inserting the small end 3 of the fan blade.
In this embodiment, after the small blade end 3 of one middle blade is inserted into the insertion slot of the middle plate 1 of another middle blade, the small blade end 3 is fixedly connected with the middle plate 1 by welding.
The foregoing is a preferred embodiment of the utility model showing and describing the general principles, features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing description merely illustrates the principles of the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a cross-flow fan blade of strake, includes blade (2) that a plurality of set up on medium plate (1), its characterized in that: each blade (2) comprises a blade small head (3) and a blade big head (4) which are connected, the blade (2) is symmetrically or asymmetrically arranged on the left side and the right side of each blade small head (3) in the vertical direction of orthographic projection, and asymmetrically arranged on the left side and the right side of each blade big head (4) so that each blade (2) is arranged on the middle plate (1) in an inclined tower-shaped structure.
2. The canted-tower type cross-flow fan blade according to claim 1, wherein: one end of the big head (4) of the blade is arranged on the middle plate (1), and one end of the big head (4) of the blade is arranged close to the edge of the middle plate (1) so that one end of the big head (4) of the blade is tightly connected with the edge of the middle plate (1).
3. The canted-tower type cross-flow fan blade according to claim 2, wherein: an air outlet channel (5) is formed between two adjacent blades (2), and one end of each big head (4) of each blade is closely adjacent to the edge of the middle plate (1) so as to form an air outlet channel (5) for unidirectional air outlet between two adjacent blades (2).
4. A canted-tower type cross-flow fan blade according to claim 2 or 3, characterized in that: the distance between one end of the big end (4) of the blade and the edge of the middle plate (1) is L, and the distance L is 0mm-0.05mm.
5. The canted-tower type cross-flow fan blade according to claim 4, wherein: the blade (2) is provided with an arc surface (6) matched with the gas flow.
6. The canted-tower type cross-flow fan blade according to claim 1, wherein: and a connecting section (7) inclined at the connecting part between the small blade head (3) and the large blade head (4) at one side of the blade (2).
7. The canted-tower type cross-flow fan blade according to claim 1, wherein: a plurality of blades (2) and a middle plate (1) are combined into a middle section blade, and a plurality of middle section blades are combined into a cross-flow blade.
8. The canted-tower type cross-flow fan blade according to claim 7, wherein: in two adjacent middle-section fan blades, a small blade head (3) in one middle-section fan blade is fixed on a middle plate (1) in the other middle-section fan blade through splicing or welding.
9. The canted-tower type cross-flow fan blade according to claim 7 or 8, wherein: the blades (2) on each middle section of fan blade and the middle plate (1) are arranged into a whole through injection molding, and the big ends (4) of the blades are fixed on one end face of the middle plate (1).
10. The canted-tower type cross-flow fan blade according to claim 9, wherein: the other end face of the middle plate (1) of each middle section of fan blade is provided with an inserting groove for inserting the small end (3) of the fan blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321183966.4U CN220522875U (en) | 2023-05-16 | 2023-05-16 | Inclined tower type cross-flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321183966.4U CN220522875U (en) | 2023-05-16 | 2023-05-16 | Inclined tower type cross-flow fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220522875U true CN220522875U (en) | 2024-02-23 |
Family
ID=89934926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321183966.4U Active CN220522875U (en) | 2023-05-16 | 2023-05-16 | Inclined tower type cross-flow fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220522875U (en) |
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2023
- 2023-05-16 CN CN202321183966.4U patent/CN220522875U/en active Active
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