CN213953989U - Axial flow wind wheel and fan applying same - Google Patents
Axial flow wind wheel and fan applying same Download PDFInfo
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- CN213953989U CN213953989U CN202023089351.4U CN202023089351U CN213953989U CN 213953989 U CN213953989 U CN 213953989U CN 202023089351 U CN202023089351 U CN 202023089351U CN 213953989 U CN213953989 U CN 213953989U
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Abstract
The utility model discloses an axial flow wind wheel and a fan applying the same, comprising a wind guide ring, a plurality of blades and a hub, wherein the blades are arranged on the outer wall of the hub at equal angles along the axial direction to form an impeller; the trailing edge of the blade is perpendicular to the inlet end of the first flow guide rib, and the outlet end of the first flow guide rib is parallel to the axis of the hub. The utility model discloses the beneficial effect who gains: the gas flows out from the rear edge of the blade in a spiral shape under the action force of the blade, and the rear edge of the blade is perpendicular to the inlet end of the first flow guide rib, the gas is screwed into the first flow guide rib, the outlet end of the first flow guide rib is parallel to the axis of the hub, and after the flow guide of the first flow guide rib, the gas flows out from the outlet end of the first flow guide rib in the direction parallel to the axis, so that the efficiency of the axial flow wind wheel is improved.
Description
Technical Field
The utility model relates to a technical field of wind wheel, concretely relates to axial flow wind wheel and use fan of this axial flow wind wheel.
Background
The axial flow fan is a component widely applied in the ventilation industry, and comprises an axial flow wind wheel, wherein the axial flow wind wheel comprises an impeller and a wind guide ring sleeved outside the impeller; however, due to the size limitation of the existing part of axial flow fans, a front guide vane and a rear guide vane cannot be respectively arranged at the air inlet end and the air outlet end of the axial flow wind wheel, so that the efficiency of the part of axial flow fans is low.
Therefore, there is a great need for an axial flow wind wheel designed to guide flow of an axial flow fan with limited size.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide an axial wind wheel and use fan of this wind wheel, axial wind wheel include a plurality of blades, wheel hub, wind-guiding circle and first water conservancy diversion rib, and this axial wind wheel has can be to gaseous water conservancy diversion, make the advantage that the gas flow is smooth and easy, improve the efficiency of wind wheel.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
an axial flow wind wheel comprises a wind guide ring, a plurality of blades and a hub, wherein the plurality of blades are arranged on the outer wall of the hub at equal angles along the circumferential direction to form an impeller, the wind guide ring is coaxially sleeved outside the impeller, the two ends of the wind guide ring are respectively an air inlet end and an air outlet end, the air outlet end of the wind guide ring is provided with a plurality of first flow guide ribs which are uniformly distributed at equal angles along the circumferential direction, and the two ends of the first flow guide ribs along the air inlet direction are an inlet end and an outlet end in sequence; the trailing edge of the blade is perpendicular to the inlet end of the first flow guide rib, and the outlet end of the first flow guide rib is parallel to the axis of the hub.
Preferably, the air inlet end of the air guide ring is further provided with a plurality of second guide ribs which are uniformly distributed at equal angles along the circumferential direction, the two ends of each second guide rib along the air inlet direction are an inlet end and an outlet end in sequence, the inlet ends of the second guide ribs are parallel to the axis of the hub, and the outlet ends of the second guide ribs are matched with the front edges of the blades.
Preferably, an included angle between a tangent line of the inlet end of the first flow guide rib along the molded line and the rotating direction is a first inlet angle, and an included angle between a tangent line of the outlet end of the first flow guide rib along the molded line and the rotating direction is a first outlet angle; the included angle between the tangent of the molded line of the front edge of the blade and the rotating direction is a blade inlet angle, and the included angle between the tangent of the molded line of the rear edge of the blade and the rotating direction is a blade outlet angle; the included angle between the tangent line of the inlet end of the second flow guide rib along the molded line and the rotating direction is a second inlet angle, and the included angle between the tangent line of the outlet end of the second flow guide rib along the molded line and the rotating direction is a second outlet angle; the first outlet angle and the second inlet angle are both 90 degrees, the blade outlet angle and the first inlet angle are complementary, the second outlet angle and the blade inlet angle are equal, and through the arrangement, the second inlet angle is 90 degrees, so that air enters the axial flow wind wheel from the air inlet end along an axis parallel to the hub; the second outlet angle is equal to the inlet angle of the blade, and after the gas entering from the air inlet end passes through the flow guide effect from the inlet end to the outlet end of the second flow guide rib, the gas can be matched with the front edge of the blade, and the gas can smoothly flow to the blade from the second flow guide rib; when the gas flows through the blades, the gas is spirally discharged at the rear edges of the blades under the influence of the acting force of the blades, the outlet angle of the blades is complementary with the first inlet angle, and the gas can be screwed into the inlet ends of the first flow guide ribs from the rear edges of the blades; the first outlet angle is 90 degrees, and after the air passes through the diversion function from the inlet end to the outlet end of the first diversion rib, the air flows out from the outlet end of the first diversion rib along the direction parallel to the axis, so that the efficiency of the axial flow wind wheel is improved.
Preferably, the first flow guide ribs, the second flow guide ribs and the molded lines of the blades are all arc-shaped, the molded lines of the first flow guide ribs are bent from the inlet end to the outlet end along the air inlet direction towards the direction far away from the axis, the molded lines of the second flow guide ribs are bent from the inlet end to the outlet end along the air inlet direction towards the direction close to the axis, and through the arrangement, the molded lines of the second flow guide ribs are bent from the inlet end to the outlet end along the air inlet direction towards the direction close to the axis, namely the second flow guide ribs change the flow direction of gas to match with the inlet of the blades; the molded lines of the first flow guide ribs are bent from the inlet end to the outlet end along the air inlet direction towards the direction far away from the axis, namely the first flow guide ribs have the functions of rectifying, converting the circumferential kinetic energy into static pressure energy and improving the outlet pressure.
Preferably, the ranges of the first inlet angle, the blade outlet angle and the second outlet angle are all 30-60 degrees, and through the arrangement, on the premise of reasonable structure, the smoothness of air flow and the efficiency of the axial flow wind wheel are improved as much as possible; if the first inlet angle, the blade outlet angle and the second outlet angle are smaller than 30 degrees, namely the bending curvatures of the first flow guiding ribs, the blades and the second flow guiding ribs are too small, the flow guiding effect on the gas is reduced; if the first inlet angle, the blade outlet angle and the second outlet angle are larger than 60 degrees, that is, the bending curvature of the first flow guide ribs, the blades and the second flow guide ribs is too large, so that the first flow guide ribs, the blades and the second flow guide ribs are easy to break, and the structure is unstable.
Preferably, the number of the first flow guide ribs is N1If the number of the second flow guide ribs is N2The number of the blades is N, N, N1And N2Are all positive integers, N1>N，N2>N, and N1、N2And N are relatively prime, the quantity of the first flow guide ribs and the second flow guide ribs is increased as much as possible through the arrangement, the flow guide effect on gas is improved, however, the quantity of the first flow guide ribs and the second flow guide ribs is relatively prime with the quantity of the blades, noise superposition caused by resonance of the first flow guide ribs and the second flow guide ribs with the blades is avoided, and the working noise of the axial flow wind wheel is improved.
Preferably, the air guide ring comprises an air inlet flaring section, a straight cylinder section and an air outlet flaring section along an air inlet direction, the end with the larger diameter of the air inlet flaring section is the air inlet end, the end with the smaller diameter of the air inlet flaring section is connected with the end of the straight cylinder section, the other end of the straight cylinder section is connected with the end with the smaller diameter of the air outlet flaring section, the end with the larger diameter of the air outlet flaring section is the air outlet end, the first flow guide ribs are arranged in the air outlet flaring section, the second flow guide ribs are arranged in the air inlet flaring section, and through the arrangement, the air inlet flaring section can improve the air inlet amount of the axial flow wind wheel, and the air outlet flaring section can improve the air outlet amount of the axial flow wind wheel, so that the efficiency of the axial flow fan is further improved.
Preferably, the arc length of the molded line of the first flow guide rib is L1The arc length of the molded line of the second flow guide rib is L2The clearance between the blade tip of the blade and the inner diameter of the straight cylinder section is H, and the diameter of the impeller is D and L1≥H，L2Not less than H, and L1<D/6，L2<D/6。
Preferably, the first guide ribs, the second guide ribs and the air guide ring are integrally formed, and the structure is more stable through the arrangement.
Compared with the prior art, the utility model discloses profitable technological effect has been obtained:
1. on the premise of size limitation, the first flow guide ribs are arranged at the air outlet end of the air guide ring, a rear guide vane is not required to be arranged, the air guide ring can guide air to a certain degree, and namely the axial flow wind wheel can guide the air per se; after the gas enters the axial flow wind wheel, the gas flows out spirally from the rear edge of the blade under the action of the blade, the rear edge of the blade is perpendicular to the inlet end of the first flow guide rib, the gas can be screwed into the first flow guide rib from the rear edge of the blade, the outlet end of the first flow guide rib is parallel to the axis, the gas flows out in a direction parallel to the axis under the flow guide effect from the inlet end to the outlet end of the first flow guide rib, the kinetic energy of the gas is converted into static pressure energy, and therefore the efficiency of the axial flow wind wheel is improved.
2. The air inlet end of the air guide ring is also provided with the second flow guide ribs, a front guide vane is not needed to be arranged, the inlet ends of the second flow guide ribs are parallel to the axis of the hub, air can enter the axial flow wind wheel along the direction parallel to the axis, the outlet ends of the second flow guide ribs are connected with the front edges of the blades, the air can be matched with the front edges of the blades under the flow guide effect from the inlet ends to the outlet ends of the second flow guide ribs, and the air can smoothly flow to the blades from the second flow guide ribs.
The utility model also provides a fan, the fan includes foretell axial compressor wind wheel, the fan is because of including axial compressor wind wheel possesses all beneficial effect of axial compressor wind wheel, no longer give unnecessary details here.
Drawings
FIG. 1 is an isometric schematic view of an embodiment of the present invention;
fig. 2 is a schematic front view of an embodiment of the invention;
fig. 3 is a schematic cross-sectional view of an embodiment of the invention;
fig. 4 is a schematic view of the molded lines and the position relationship of the first flow guide ribs, the blades and the second flow guide ribs according to the embodiment of the present invention. Wherein, the technical characteristics that each reference numeral refers to are as follows:
10-axial flow wind wheel, 11-wind guide ring, 11.1-air inlet flaring section, 11.2-straight tube section, 11.3-air outlet flaring section, 12-blade, 13-first guide rib, 14-hub, 15-second guide rib.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following specific embodiments.
Example 1:
referring to fig. 1 to 4, the embodiment discloses an axial flow wind wheel 1, which includes an air guide ring 11, five blades 12 and a hub 14, wherein the five blades 12 are arranged on the outer wall of the hub 14 at equal angles along the circumferential direction to form an impeller, that is, an interval between adjacent blades 12 is 72 degrees, the air guide ring 11 is coaxially sleeved outside the impeller, two ends of the air guide ring 11 are respectively an air inlet end and an air outlet end, when viewed from the direction of fig. 3, the right side is the air inlet end, the left side is the air outlet end, the air outlet end of the air guide ring 11 is provided with a plurality of first air guide ribs 13 uniformly distributed at equal angles along the circumferential direction, and two ends of the first air guide ribs 13 along the air inlet direction are an inlet end and an outlet end in sequence; the outlet ends of the first guide ribs 13 are parallel to the axis of the hub 14, and the rear edges of the blades 12 are perpendicular to the outlet ends of the first guide ribs 13;
on the premise of size limitation, the air outlet end of the air guide ring 11 is provided with the first guide ribs 13, a rear guide vane is not required to be arranged, and a certain guide effect on air can be achieved, namely the axial flow wind wheel 1 can guide the air; the air flows into the axial flow wind wheel 1 from the inlet end, flows to the rear edge from the front edge of the blade 12, flows out from the rear edge of the blade 12 in a spiral shape under the action of the blade 12, the rear edge of the blade 12 is perpendicular to the inlet end of the first flow guide rib 13, the air can be screwed into the first flow guide rib 13 from the rear edge of the blade 12, the outlet end of the first flow guide rib 13 is parallel to the axis of the hub 14, and the air flows out in the direction parallel to the axis of the hub 14 under the flow guide effect from the inlet end to the outlet end of the first flow guide rib 13, so that the efficiency of the axial flow wind wheel 1 is improved.
Referring to fig. 4, the included angle between the tangent of the inlet end of the first flow guiding rib 13 along the profile line and the rotating direction is a first inlet angle β1The included angle between the tangent of the outlet end of the first flow guide rib 13 along the molded line and the rotating direction is a first outlet angleβ2(ii) a The leading edge of the blade 12 forms an included angle with the direction of rotation along the profile or camber line tangent line at a blade entry angle γ1The trailing edge of the blade 12 forms an angle with the direction of rotation along the profile or camber line tangent2(ii) a First exit angle beta2Is 90 degrees and the outlet angle gamma of the blade2At a first inlet angle beta1Complementary, i.e. blade exit angle gamma2+ first inlet angle β1＝90°。
The molded lines of the first flow guiding ribs 13 and the blades 12 are both arc-shaped, the molded lines of the first flow guiding ribs 13 are bent from the inlet end to the outlet end along the air inlet direction towards the axis direction far away from the hub 14, namely the diameter of the outlet end of the first flow guiding ribs 13 is larger, so that the first flow guiding ribs 13 have certain effects of expanding air and increasing the air volume, and the efficiency of the axial flow wind wheel 1 is further improved.
First inlet angle beta1Inlet angle of blade gamma1And blade exit angle gamma2All ranges between 30 degrees and 60 degrees, in the embodiment, the inlet angle gamma of the blade1At an angle of 30 DEG, blade exit angle gamma2Is 50 DEG, the first inlet angle beta1The angle is 40 degrees, and the efficiency of the axial flow wind wheel 1 is improved as much as possible on the premise of reasonable structure; if the first inlet angle beta1Inlet angle of blade gamma1And blade exit angle gamma2Less than 30 degrees, namely the bending curvature of the first flow guiding ribs 13 and the blades 12 is too small, so that the flow guiding effect on the gas is reduced; if the first inlet angle beta1Inlet angle of blade gamma1And blade exit angle gamma2More than 60 degrees, that is to say, the bending curvature of first guide rib 13 and blade 12 is too big, makes first guide rib 13 and blade 12 easy to break, and the structure is unstable.
If the number of the first flow guide ribs 13 is N1The number of the blades 12 is N, N, N1Are all positive integers, then N1>N, and N1The number of the first flow guiding ribs 13 is not integral multiple of N, the number of the first flow guiding ribs is increased as much as possible, and the flow guiding effect on the gas is improved, so that the efficiency of the axial flow wind wheel 1 is improved; however, the number of the first guide ribs 13 cannot be integral multiple of the number of the blades 12, so that the first guide ribs 13 and the blades 12 are prevented from generating resonance to cause noiseAnd sound superposition, namely, the working noise of the axial flow wind wheel 1 is prevented from being improved.
The wind-guiding circle 11 includes air inlet flaring section 11.1 along the air inlet direction, straight section of thick bamboo 11.2 and air-out flaring section 11.3, the great one end of air inlet flaring section 11.1 diameter is the air inlet end, the less one end of air inlet flaring section 11.1 diameter is connected with the one end of straight section of thick bamboo 11.2, the other end of straight section of thick bamboo 11.2 is connected with the less one end of air-out flaring section 11.3 diameter, the great one end of air-out flaring section 11.3 diameter is the air-out end, air inlet flaring section 11.1, straight section of thick bamboo 11.2 and air-out flaring section 11.3 integrated into one piece, first water conservancy diversion rib 13 sets up in air-out flaring section 11.3, air-out flaring section 11.3 can improve axial compressor wind wheel 1's air output, further improves axial compressor fan's efficiency.
The arc length of the profile of the first flow guide rib 13 is L1The clearance between the tip of the blade 12 and the inner diameter of the straight cylinder section 11.2 is H, and the diameter of the impeller is D, L1Not less than H, and L1<D/6。
Example 2:
only the difference from embodiment 1 is described in this embodiment, and other technical features of this embodiment are the same as those of embodiment 1, in this embodiment, the air inlet end of the air guide ring 11 is further provided with a plurality of second guide ribs 15 uniformly distributed at equal angles along the axial direction, the second guide ribs 15 are arranged at the air inlet flared section 11.1, and two ends of the second guide ribs 15 along the air inlet direction are an inlet end and an outlet end in sequence; the inlet end of the second flow guiding rib 15 is parallel to the axis of the hub 14, and the outlet end of the second flow guiding rib 15 is matched with the front edge of the blade 12, i.e. the outlet end of the second flow guiding rib 15 is connected with the front edge of the blade 12.
The inlet end of the second flow guide rib 15 is parallel to the axis of the hub 14, gas can enter the axial flow wind wheel 1 along the direction parallel to the axis of the hub 14, the outlet end of the second flow guide rib 15 is connected with the front edge of the blade 12, the gas can be better matched with the front edge of the blade 12 under the flow guide effect from the inlet end to the outlet end of the second flow guide rib 15, and the gas can smoothly flow to the blade 12 from the second flow guide rib 15.
The included angle between the tangent line of the inlet end of the second flow guide rib 15 along the molded line and the rotating direction is a second inlet angle alpha1Second inlet angle alpha1Is 90 degrees, and the included angle of the outlet end of the second flow guide rib 15 along the tangent line of the molded line and the rotating direction is a second outlet angle alpha2Second exit angle α2Angle of incidence of the blade gamma1Are equal. The molded lines of the second flow guiding ribs 15 are arc-shaped, the molded lines of the second flow guiding ribs 15 are bent from the inlet end to the outlet end along the air inlet direction towards the axis direction close to the hub 14, namely the diameter of the second flow guiding ribs 15 along the air inlet direction is gradually reduced, so that the second flow guiding ribs 15 gradually compress the volume of gas, and the pressure of the gas is improved.
Second exit angle alpha230 deg. and blade inlet angle gamma1The guide function to the gas is improved on the premise of reasonable structure, so that the smoothness of the gas flow is improved; if the second exit angle alpha2Less than 30 degrees, namely the bending curvature of the second flow guiding ribs 15 is too small, the flow guiding effect on the gas is reduced; if the second exit angle alpha2Greater than 60 °, that is to say, the bending curvature of second air guide rib 15 is too big for second air guide rib 15 is easy to break, and the structure is unstable.
If the number of the second flow guide ribs 15 is N2，N2Is a positive integer, then N2>N, and N2The number of the second flow guiding ribs 15 is increased as much as possible without being an integral multiple of N, so that the flow guiding effect on the gas is improved, but the number of the second flow guiding ribs 15 cannot be an integral multiple of the number of the blades 12, and noise superposition caused by resonance of the second flow guiding ribs 15 and the blades 12 is avoided, namely, the working noise of the axial flow wind wheel 1 is avoided being improved.
The arc length of the profile of the second flow guide rib 15 is L2，L2Not less than H, and L2<D/6。
In an embodiment, the first flow guiding ribs 13 and the second flow guiding ribs 15 are integrally formed with the air guiding ring 11, so as to improve the structural stability.
The utility model discloses use of embodiment:
when the impeller rotates, the air near the air inlet end of the axial flow wind wheel 1 is sucked, because the inlet end of the second flow guide rib 15 is parallel to the axis of the hub 14, under the flow guide effect of the inlet end of the second flow guide rib 15, the air enters the axial flow wind wheel 1 along the axis direction parallel to the hub 14, because the outlet end of the second flow guide rib 15 is connected with the front edge of the blade 12, the air better matches with the front edge of the blade 12 under the flow guide effect from the inlet end to the outlet end of the second flow guide rib 15, the air can smoothly enter the blade 12 from the second flow guide rib 15, the air spirally flows out from the rear edge of the blade 12 under the acting force of the blade 12, because the rear edge of the blade 12 is vertical to the inlet end of the first flow guide rib 13, the air can be screwed into the inlet end of the first flow guide rib 13, and the outlet end of the first flow guide rib 13 is parallel to the axis of the hub 14, under the guide action of the air from the inlet end to the outlet end of the first guide ribs 13, the air flows out from the air outlet end in the axial direction parallel to the hub 14, and the efficiency of the axial flow wind wheel 1 is improved.
The utility model also provides a fan, fan include foretell axial compressor wind wheel 1, and the fan is because of including axial compressor wind wheel 1 and possess the all beneficial effect of axial compressor wind wheel 1, no longer gives unnecessary details here.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.
Claims (10)
1. An axial flow wind wheel comprises a wind guide ring, a plurality of blades and a hub, wherein the plurality of blades are arranged on the outer wall of the hub at equal angles along the circumferential direction to form an impeller, the wind guide ring is coaxially sleeved outside the impeller, and the two ends of the wind guide ring are respectively an air inlet end and an air outlet end; the trailing edge of the blade is perpendicular to the inlet end of the first flow guide rib, and the outlet end of the first flow guide rib is parallel to the axis of the hub.
2. The axial-flow wind wheel according to claim 1, characterized in that the air inlet end of the air guide ring is further provided with a plurality of second guide ribs uniformly distributed at equal angles along the circumferential direction, the two ends of the second guide ribs along the air inlet direction are an inlet end and an outlet end in sequence, the inlet end of the second guide ribs is parallel to the axis of the hub, and the outlet end of the second guide ribs is matched with the front edge of the blade.
3. The axial-flow wind wheel according to claim 2, characterized in that the included angle of the inlet end of the first flow-guiding rib along the tangent line of the molded line and the rotating direction is a first inlet angle, and the included angle of the outlet end of the first flow-guiding rib along the tangent line of the molded line and the rotating direction is a first outlet angle; the included angle between the tangent of the molded line of the front edge of the blade and the rotating direction is a blade inlet angle, and the included angle between the tangent of the molded line of the rear edge of the blade and the rotating direction is a blade outlet angle; the included angle between the tangent line of the inlet end of the second flow guide rib along the molded line and the rotating direction is a second inlet angle, and the included angle between the tangent line of the outlet end of the second flow guide rib along the molded line and the rotating direction is a second outlet angle; the first outlet angle and the second inlet angle are both 90 degrees, the blade outlet angle and the first inlet angle are complementary, and the second outlet angle is equal to the blade inlet angle.
4. The axial-flow wind wheel according to claim 3, wherein the first flow-guiding ribs, the second flow-guiding ribs and the molded lines of the blades are all arc-shaped, the molded lines of the first flow-guiding ribs are bent from the inlet end to the outlet end along the air inlet direction towards the direction far away from the axis, and the molded lines of the second flow-guiding ribs are bent from the inlet end to the outlet end along the air inlet direction towards the direction close to the axis.
5. The axial-flow wind wheel according to claim 4, characterized in that the ranges of the first inlet angle, the blade outlet angle and the second outlet angle are all between 30 ° and 60 °.
6. The axial-flow wind wheel according to claim 2, wherein the number of the first flow guide ribs is N1If the number of the second flow guide ribs is N2The number of the blades is N, N, N1And N2Are all positive integers, N1>N，N2>N, and N1、N2And N are coprime.
7. The axial-flow wind wheel according to claim 4, wherein the wind guide ring includes an air inlet flared section, a straight tube section and an air outlet flared section along an air inlet direction, the end with the larger diameter of the air inlet flared section is the air inlet end, the end with the smaller diameter of the air inlet flared section is connected with the end of the straight tube section, the other end of the straight tube section is connected with the end with the smaller diameter of the air outlet flared section, the end with the larger diameter of the air outlet flared section is the air outlet end, the first flow guide rib is arranged in the air outlet flared section, and the second flow guide rib is arranged in the air inlet flared section.
8. The axial-flow wind wheel according to claim 7, characterized in that the arc length of the profile of the first flow-guiding ribs is L1The arc length of the molded line of the second flow guide rib is L2The clearance between the blade tip of the blade and the inner diameter of the straight cylinder section is H, and the diameter of the impeller is D and L1≥H，L2Not less than H, and L1<D/6，L2<D/6。
9. The axial-flow wind wheel according to claim 2, wherein the first and second flow guide ribs and the wind guide ring are integrally formed.
10. A wind turbine comprising the axial flow wind wheel according to any one of claims 1 to 9.
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| CN202023089351.4U CN213953989U (en) | 2020-12-18 | 2020-12-18 | Axial flow wind wheel and fan applying same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962325A (en) * | 2022-06-20 | 2022-08-30 | 太仓欣华盈电子有限公司 | High-efficiency fan blade and centrifugal fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962325A (en) * | 2022-06-20 | 2022-08-30 | 太仓欣华盈电子有限公司 | High-efficiency fan blade and centrifugal fan |
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