CN115717609A - Axial flow fan blade and air conditioner - Google Patents
Axial flow fan blade and air conditioner Download PDFInfo
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- CN115717609A CN115717609A CN202110974857.3A CN202110974857A CN115717609A CN 115717609 A CN115717609 A CN 115717609A CN 202110974857 A CN202110974857 A CN 202110974857A CN 115717609 A CN115717609 A CN 115717609A
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Abstract
The invention discloses an axial flow fan blade and an air conditioner, and relates to the technical field of air conditioners. The axial flow fan blade comprises a hub and blades. The blade is fixedly connected to the circumferential surface of the hub, the blade is provided with a tail edge, the tail edge comprises a first wall section and a second wall section, one end of the first wall section is connected with the hub, the other end of the first wall section is connected with the second wall section, the first wall section and the second wall section are combined to form a gap space, a first included angle is formed between a connecting line between one end of the first wall section far away from the second wall section and one end of the second wall section far away from the first wall section and the first wall section, a second included angle is formed between a connecting line between one end of the first wall section far away from the second wall section and one end of the second wall section far away from the first wall section and the second wall section, and the first included angle is smaller than the second included angle. The axial flow fan blade provided by the invention can reduce the weight of the axial flow fan blade under the condition of ensuring the air output, reduce the energy consumption of the axial flow fan blade in the operation process, reduce the operation cost, reduce the generated noise and improve the user experience.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an axial flow fan blade and an air conditioner.
Background
At present, with the increasing living standard of people, the air conditioner becomes an indispensable household appliance in home. The air conditioner comprises an inner machine and an outer machine, wherein the inner machine is arranged indoors, the outer machine is arranged outdoors, and the inner machine and the outer machine jointly act to realize the function of regulating and controlling the indoor temperature. The outer machine generally radiates through the axial flow fan blade, but the existing axial flow fan blade is heavy in weight, large in energy consumption in the operation process, high in operation cost, large in generated noise and capable of influencing user experience.
Disclosure of Invention
The invention solves the problems of reducing the weight of the axial flow fan blade under the condition of ensuring the air output, reducing the energy consumption of the axial flow fan blade in the running process, reducing the running cost, reducing the generated noise and improving the user experience.
In order to solve the above problems, the technical solution of the present invention is realized as follows:
in a first aspect, the invention provides an axial flow fan blade, which includes a hub and a blade, the blade is fixedly connected to a circumferential surface of the hub, the blade is provided with a trailing edge, the trailing edge includes a first wall section and a second wall section, one end of the first wall section is connected to the hub, the other end is connected to the second wall section, the first wall section and the second wall section form a gap space in combination, a first included angle is formed between a connecting line between one end of the first wall section, which is far away from the second wall section, and one end of the second wall section, which is far away from the first wall section, and the second wall section, a second included angle is formed between a connecting line between one end of the first wall section, which is far away from the second wall section, and the first included angle is smaller than the second included angle. Compared with the prior art, the axial flow fan blade provided by the invention adopts the first wall section and the second wall section which are combined to form the gap space and the first included angle which is smaller than the second included angle, so that the weight of the axial flow fan blade can be reduced under the condition of ensuring the air output, the energy consumption of the axial flow fan blade in the operation process is reduced, the operation cost is reduced, the generated noise is reduced, and the user experience is improved.
Further, the first included angle ranges from 20 degrees to 30 degrees, and the second included angle ranges from 60 degrees to 70 degrees. The reasonable size of the first included angle and the second included angle can ensure that air flows stably and increase the area of the gap space as much as possible, so that the weight of the blade is reduced, the weight of the axial flow fan blade is reduced, the light weight of the axial flow fan blade is realized, and the material cost and the operation cost are reduced.
Further, the first included angle is 24 degrees, and the second included angle is 66 degrees.
Further, a preset angle is formed between the first wall section and the second wall section, and the preset angle ranges from 80 degrees to 100 degrees. The reasonable size of presetting the angle can increase the area in breach space as far as possible when guaranteeing that the air flows steadily to alleviate the weight of blade, and then alleviate the weight of axial compressor fan blade, realize the lightweight of axial compressor fan blade, reduce material cost and running cost.
Further, the preset angle is 90 degrees.
Furthermore, the blade is also provided with a front edge, the front edge and the tail edge are oppositely arranged, the first wall section is arranged in an arc shape, and the circle center of the first wall section is positioned on one side of the tail edge close to the front edge. I.e. the first wall segment is arranged extending in a direction close to the leading edge, to further improve the stability of the air flow.
Further, the junction of the first wall section and the second wall section is rounded. So as to improve the safety, avoid cutting assembly personnel and improve the stability of air flow.
Further, the trailing edge also includes a third wall section connected to an end of the second wall section remote from the first wall section. The third wall section is used for improving the intensity in breach space, prevents that the blade from taking place to warp or bending.
Furthermore, the blades are oppositely provided with inner edges and outer edges, the inner edges are fixedly connected with the hub, and the outer edges are provided with folded edges. The hem can improve the intensity of outer fringe to improve the intensity of whole blade, prevent that the blade from taking place to warp or bending, and the hem can also carry out the current-limiting to the air-out air current, prevent the outside loss of air-out air current, guarantee the air output.
In a second aspect, the present invention provides an air conditioner, including the above axial flow fan blade, the axial flow fan blade includes a hub and a blade, the blade is fixedly connected to the circumferential surface of the hub, the blade is provided with a trailing edge, the trailing edge includes a first wall section and a second wall section, one end of the first wall section is connected to the hub, the other end is connected to the second wall section, the first wall section and the second wall section form a gap space in combination, a line between one end of the first wall section far away from the second wall section and one end of the second wall section far away from the first wall section forms a first included angle with the first wall section, a line between one end of the first wall section far away from the second wall section and one end of the second wall section far away from the first wall section forms a second included angle with the second wall section, and the first included angle is smaller than the second included angle. The air conditioner can reduce the weight of the axial flow fan blade under the condition of ensuring the air output, reduce the energy consumption of the axial flow fan blade in the operation process, reduce the operation cost, reduce the generated noise and improve the user experience.
Drawings
Fig. 1 is an axial side view of an axial flow fan blade according to a first embodiment of the present invention;
fig. 2 is a left side view of an axial-flow fan blade according to a first embodiment of the present invention;
fig. 3 is a top view of an axial-flow fan blade according to a first embodiment of the invention;
FIG. 4 is a schematic view of a blade of an axial-flow fan according to a first embodiment of the present invention;
FIG. 5 is a mathematical model of the trailing edge of the blade in an axial flow fan according to a first embodiment of the invention.
Description of reference numerals:
100-axial flow fan blades; 110-a hub; 120-blades; 121-leading edge; 122-trailing edge; 123-inner edge; 124-outer edge; 125-a first wall section; 126-a second wall segment; 127-a third wall segment; 128-gap space; 129-folding; 130-preset line segments.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
First embodiment
Referring to fig. 1 and fig. 2, an embodiment of the invention provides an axial-flow fan blade 100 for driving air to flow. The fan blade structure can reduce the weight of the axial flow fan blade 100 under the condition of ensuring the air output, reduce the energy consumption of the axial flow fan blade 100 in the operation process, reduce the operation cost, reduce the generated noise and improve the user experience.
It should be noted that the axial flow fan 100 is applied to an air conditioner external unit (not shown), the air conditioner external unit is installed outdoors and connected to an air conditioner internal unit (not shown), and the air conditioner external unit and the air conditioner internal unit act together to achieve a function of regulating and controlling indoor air temperature. The outdoor unit of the air conditioner includes a condenser (not shown), a driving motor (not shown), and a casing (not shown), wherein the condenser, the driving motor, and the axial-flow fan 100 are all installed in the casing. The driving motor is connected to the axial-flow fan blade 100 to drive the axial-flow fan blade 100 to rotate. The position of the axial flow fan blade 100 corresponds to the position of a condenser, and the condenser is used for exchanging heat for a refrigerant. The axial-flow fan 100 can form negative pressure in the rotating process to drive air to flow to form air outlet flow, and the air outlet flow is used for cooling the condenser so as to take away heat of the condenser and ensure normal operation of the condenser.
The axial flow fan blade 100 includes a hub 110 and blades 120. Hub 110 is cylindric, and blade 120 fixed connection is on hub 110's global, and hub 110 can drive blade 120 and rotate to drive the air flow. Hub 110 is configured to be connected to a driving motor, and the driving motor can drive blades 120 to rotate via hub 110.
In this embodiment, the number of the blades 120 is three, the three blades 120 are disposed on the circumferential surface of the hub 110 in an annular array, and the hub 110 can drive the three blades 120 to rotate at the same time, so that the air flows to form the outlet airflow. However, the number of the blades 120 is not limited to four, and in other embodiments, the number of the blades 120 may be four or five, and the number of the blades 120 is not particularly limited.
Referring to fig. 3, it should be noted that the blade 120 is provided with a leading edge 121, a trailing edge 122, an inner edge 123 and an outer edge 124, wherein the leading edge 121 and the trailing edge 122 are disposed opposite to each other, the inner edge 123 and the outer edge 124 are disposed opposite to each other, and the leading edge 121, the outer edge 124, the trailing edge 122 and the inner edge 123 are connected end to jointly enclose the contour shape of the blade 120. Specifically, the inner edge 123 is a side of the blade 120 connected to the hub 110, the outer edge 124 is a side of the blade 120 away from the hub 110, the leading edge 121 is a side of the blade 120 facing the wind during rotation, and the trailing edge 122 is a side of the blade 120 facing the wind during rotation.
Referring to fig. 4 and 5 in combination, the trailing edge 122 includes a first wall section 125, a second wall section 126, and a third wall section 127. One end of the first wall section 125 is connected with the hub 110, the other end is connected with the second wall section 126, the first wall section 125 and the second wall section 126 are combined to form a gap space 128, and the gap space 128 can reduce the consumable amount in the production of the blade 120, so that the weight of the axial flow fan blade 100 is reduced, the energy consumption of the axial flow fan blade 100 in the operation process is further reduced, and the operation cost is reduced. The third wall section 127 is connected to the end of the second wall section 126 remote from the first wall section 125 and connected to the outer edge 124, and the third wall section 127 is used to increase the strength of the gap space 128 and prevent the blade 120 from deforming or bending.
It should be noted that a first included angle is formed between a connecting line between an end of the first wall section 125 away from the second wall section 126 and an end of the second wall section 126 away from the first wall section 125 and the first wall section 125, and a second included angle is formed between a connecting line between an end of the first wall section 125 away from the second wall section 126 and an end of the second wall section 126 away from the first wall section 125 and the second wall section 126, where the first included angle is smaller than the second included angle, that is, the inclination degree of the first wall section 125 is smaller than the inclination degree of the second wall section 126, so that the midpoint of the gap space 128 is disposed close to the outer edge 124, and thus, the area of the gap space 128 can be increased, the weight of the axial-flow fan blade 100 can be further reduced, air can be guided to flow toward the direction of the outer edge 124, the air output of the air output is ensured, the generated noise is reduced, and the user experience is improved.
For ease of understanding, a line between an end of the first wall section 125 remote from the second wall section 126 and an end of the second wall section 126 remote from the first wall section 125 is named a preset line segment 130, and the first included angle is denoted as a, the second included angle is denoted as B, and the preset angle is denoted as C. The first wall section 125, the preset line segment 130 and the second wall section 126 together form a triangle, a first included angle is formed between the first wall section 125 and the preset line segment 130, a second included angle is formed between the second wall section 126 and the preset line segment 130, and a preset angle is formed between the first wall section 125 and the second wall section 126. Specifically, since the first included angle is smaller than the second included angle, the length of the first wall section 125 is larger than the length of the second wall section 126 to ensure smooth air flow when the axial flow fan 100 operates.
It should be noted that the range of the first included angle is 20 degrees to 30 degrees, the range of the second included angle is 60 degrees to 70 degrees, the range of the preset angle is 80 degrees to 100 degrees, and the size of the reasonable first included angle, the reasonable second included angle and the preset angle can increase the area of the gap space 128 as much as possible while ensuring the smooth flow of air, so as to reduce the weight of the blade 120, further reduce the weight of the axial flow blade 100, realize the light weight of the axial flow blade 100, and reduce the material cost and the operation cost.
In this embodiment, the first included angle is 24 degrees, the second included angle is 66 degrees, the predetermined angle is 90 degrees, and the first wall section 125, the predetermined line segment 130, and the second wall section 126 together form a right triangle. But not limited thereto, in other embodiments, the first included angle may be 20 degrees, in which case, if the second included angle is 70 degrees, the predetermined angle is 90 degrees, and if the second included angle is 60 degrees, the predetermined angle is 100 degrees; the first included angle may also be 30 degrees, and at this time, if the second included angle is 60 degrees, the preset angle is 90 degrees, and if the second included angle is 70 degrees, the preset angle is 80 degrees; the first angle, the second angle and the predetermined angle are not particularly limited.
In this embodiment, the first wall section 125 is disposed in an arc shape, and the center of the first wall section 125 is located at a side of the trailing edge 122 close to the leading edge 121, that is, the first wall section 125 extends toward the leading edge 121, so as to further improve the stability of the air flow. However, the present invention is not limited thereto, and in other embodiments, the first wall segments 125 may be arranged in a straight line, and the shape of the first wall segments 125 is not particularly limited.
In this embodiment, the connection between the first wall section 125 and the second wall section 126 is rounded, and the connection between the second wall section 126 and the third wall section 127 is rounded, so as to improve safety, avoid cutting assembly personnel, and improve the stability of air flow.
In this embodiment, inner edge 123 and hub 110 fixed connection, outer edge 124 are provided with hem 129, and hem 129 can improve the intensity of outer edge 124 to improve whole blade 120's intensity, prevent that blade 120 from taking place to warp or bending, and hem 129 can also carry out the current-limiting to the air-out air current, prevent the outside loss of air-out air current, guarantee the air output.
According to the axial-flow fan blade 100 of the embodiment of the present invention, the blade 120 is fixedly connected to the circumferential surface of the hub 110, the blade 120 is provided with the trailing edge 122, the trailing edge 122 includes the first wall section 125 and the second wall section 126, one end of the first wall section 125 is connected to the hub 110, and the other end is connected to the second wall section 126, the first wall section 125 and the second wall section 126 combine to form the gap space 128, a first included angle is formed between a connecting line between one end of the first wall section 125 away from the second wall section 126 and one end of the second wall section 126 away from the first wall section 125 and the first wall section 125, a second included angle is formed between a connecting line between one end of the first wall section 125 away from the second wall section 126 and one end of the second wall section 126 away from the first wall section 125 and the second wall section 126, and the first included angle is smaller than the second included angle. Compared with the prior art, the axial flow fan blade 100 provided by the invention adopts the first wall section 125 and the second wall section 126 which are combined to form the gap space 128 and the first included angle which is smaller than the second included angle, so that the weight of the axial flow fan blade 100 can be reduced under the condition of ensuring the air output, the energy consumption of the axial flow fan blade 100 in the operation process is reduced, the operation cost is reduced, the generated noise is reduced, and the user experience is improved.
Second embodiment
The present invention provides an air conditioner (not shown) for regulating indoor air temperature. The air conditioner comprises an air conditioner external unit and an air conditioner internal unit, wherein the air conditioner external unit comprises a shell, a condenser, a driving motor and an axial flow fan blade 100. The basic structure and principle of the axial flow fan blade 100 and the technical effects thereof are the same as those of the first embodiment, and for the sake of brief description, reference may be made to corresponding contents in the first embodiment for the part of this embodiment that is not mentioned.
In this embodiment, the air conditioner outer unit is installed outdoors, and is connected with the air conditioner internal unit, and the air conditioner outer unit and the air conditioner internal unit combined action to realize the function of regulation and control indoor temperature. The condenser, the driving motor and the axial flow fan blades 100 are all arranged in the shell, the driving motor is connected with the axial flow fan blades 100, and the positions of the axial flow fan blades 100 correspond to the position of the condenser. The axial flow fan blades 100 can form negative pressure in the rotating process to drive air to flow to form air outlet flow, the air outlet flow can cool the condenser in an air cooling mode to take away heat of the condenser, normal operation of the condenser is guaranteed, and the indoor unit of the air conditioner can perform indoor heating or refrigerating functions.
The beneficial effects of the air conditioner according to the embodiment of the present invention are the same as those of the first embodiment, and are not described herein again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An axial flow fan blade, comprising a hub (110) and a blade (120), the blade (120) being fixedly connected to the peripheral surface of the hub (110), the blade (120) being provided with a trailing edge (122), the trailing edge (122) comprising a first wall section (125) and a second wall section (126), the first wall section (125) being connected at one end to the hub (110) and at the other end to the second wall section (126), the first wall section (125) and the second wall section (126) combining to form a gap space (128), a line between an end of the first wall section (125) remote from the second wall section (126) and an end of the second wall section (126) remote from the first wall section (125) forming a first angle with the first wall section (125), a line between an end of the first wall section (125) remote from the second wall section (126) and an end of the second wall section (126) remote from the first wall section (125) forming a second angle with the second wall section (126), the first angle being smaller than the second angle.
2. The axial-flow fan blade according to claim 1, wherein the first included angle ranges from 20 degrees to 30 degrees, and the second included angle ranges from 60 degrees to 70 degrees.
3. The axial-flow fan blade according to claim 2, wherein the first included angle is 24 degrees, and the second included angle is 66 degrees.
4. The axial flow fan blade according to claim 1, wherein a preset angle is formed between the first wall section (125) and the second wall section (126), and the preset angle is in a range of 80 degrees to 100 degrees.
5. The axial flow fan blade of claim 4, wherein said predetermined angle is 90 degrees.
6. The axial flow fan blade according to claim 1, wherein the blade (120) further has a leading edge (121), the leading edge (121) is opposite to the trailing edge (122), the first wall section (125) is disposed in an arc shape, and a center of the first wall section (125) is located on a side of the trailing edge (122) close to the leading edge (121).
7. The axial flow fan blade according to claim 1, wherein the junction of the first wall section (125) and the second wall section (126) is rounded.
8. The axial flow fan blade according to claim 1, wherein the trailing edge (122) further comprises a third wall section (127), the third wall section (127) being connected to an end of the second wall section (126) distal from the first wall section (125).
9. The axial-flow fan blade according to claim 1, wherein the blade (120) is provided with an inner edge (123) and an outer edge (124) which are opposite to each other, the inner edge (123) is fixedly connected with the hub (110), and the outer edge (124) is provided with a folded edge (129).
10. An air conditioner characterized by comprising the axial-flow fan blade as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110974857.3A CN115717609A (en) | 2021-08-24 | 2021-08-24 | Axial flow fan blade and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110974857.3A CN115717609A (en) | 2021-08-24 | 2021-08-24 | Axial flow fan blade and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115717609A true CN115717609A (en) | 2023-02-28 |
Family
ID=85253427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110974857.3A Pending CN115717609A (en) | 2021-08-24 | 2021-08-24 | Axial flow fan blade and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115717609A (en) |
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2021
- 2021-08-24 CN CN202110974857.3A patent/CN115717609A/en active Pending
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