CN211314639U - Cross-flow fan blade and air conditioner with same - Google Patents
Cross-flow fan blade and air conditioner with same Download PDFInfo
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- CN211314639U CN211314639U CN201921571466.1U CN201921571466U CN211314639U CN 211314639 U CN211314639 U CN 211314639U CN 201921571466 U CN201921571466 U CN 201921571466U CN 211314639 U CN211314639 U CN 211314639U
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Abstract
The utility model discloses a through-flow fan blade, including a plurality of middle-section fan blades, middle-section fan blade is including disc and a plurality of blade, and is a plurality of the blade is fixed in on the disc, it is protruding to be provided with the drainage on the leaf back of blade, the end of blade with be equipped with the depressed part between the drainage arch, this through-flow fan blade can change the angle of giving vent to anger that admits air of blade, reduces the air current separation phenomenon that the back of the leaf is close to the trailing edge, not only can the effectual air conditioning indoor set amount of wind that improves, has still reduced air conditioning indoor set noise simultaneously.
Description
Technical Field
The utility model relates to an air conditioner technical field specifically relates to a through-flow fan blade and air conditioner thereof.
Background
The cross-flow fan is also called a cross-flow fan, and an impeller in the cross-flow fan is generally called a cross-flow fan blade. The impeller is multi-blade type and long cylindrical, and is provided with forward multi-wing blades. When the impeller rotates, airflow enters the blade grids from the opening position of the impeller, passes through the inside of the impeller and is discharged into the volute from the blade grids on the other side to form working airflow. The flow of the air flow in the impeller is complicated, the speed field of the air flow is unstable, and a vortex is also present in the impeller, the center of which is located near the volute tongue. The existence of the vortex enables the output end of the impeller to generate circulating flow, and outside the vortex, an airflow streamline in the impeller is arc-shaped. Thus, the flow velocity at each point on the outer circumference of the impeller is non-uniform, with greater velocity nearer the vortex core and less velocity nearer the volute. The vortex center is far away from the vortex tongue, so that the area of circulating flow is increased, the efficiency of the fan is reduced, and the unstable degree of flow is increased.
The fan in the existing air conditioner generally adopts a cross-flow fan, the parts of the air conditioner comprise an evaporator, a panel, a volute tongue, a cross-flow fan blade and the like, the cross-flow fan blade is arranged at the central part of the volute, the cross-flow fan blade is divided into an inlet area and an outlet area by the volute tongue and the volute, the evaporator usually adopts a two-fold or three-fold structural design, the evaporator is arranged at the inlet side of the cross-flow fan blade, airflow flows through the evaporator after entering from the inlet and then flows to the cross-flow fan blade, the circumferential distances between the evaporator and the cross-flow fan blade are unequal, the airflow velocity direction difference at each position of the circumference of the inlet area of the cross-flow fan blade is larger, and the airflow is easy to separate and fall off on the surface of the blade to form a low-speed vortex area, thereby reducing the air volume of the air conditioner or.
The existing solution to the above problem is to improve the blade in the cross flow fan, for example, the patent document with publication number CN103133360B is disclosed by the national intellectual property office in 2015, 10, month 28, and a cross flow fan and air conditioner includes: a fixing member; and a plurality of blades fixed to an upper surface of the fixing member and spaced apart from each other in a circumferential direction, wherein one end of one or more of the blades has a protrusion protruding from a surface of the blade in a downward direction, wherein the protrusion protrudes from an outer edge of the blade, wherein an outer surface of the protrusion is connected to an outer edge surface of the blade in a curved form, and wherein an inner surface of the protrusion facing an inside of the cross flow fan is in the form of a flat surface inclined at a predetermined angle with respect to a lower surface of the blade. The technical point of the above patent is that the tip of the blade has a protrusion, which protrudes in the downward direction (leaf basin), from the outer edge of the blade, the protrusion is connected to the outer edge surface of the blade, and the protrusion is in a curved shape protruding in the downward direction from the surface of the blade, unlike the technical solution of the present invention.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at avoiding the weak point among the prior art and providing a through-flow fan blade, this through-flow fan blade, the angle of giving vent to anger that admits air that can change the blade reduces the air flow separation phenomenon that the back of the leaf is close to the trailing edge, not only can effectual improvement air conditioning indoor set amount of wind, has still reduced air conditioning indoor set noise simultaneously.
The embodiment of the utility model provides a through-flow fan blade, including a plurality of well fan blades, well fan blade is including disc and a plurality of blade, and is a plurality of the blade is fixed in on the disc, it is protruding to be provided with the drainage on the leaf back of blade, the end of blade with be equipped with the depressed part between the drainage arch.
Furthermore, the drainage bulge is provided with a circular arc-shaped drainage edge, the drainage bulge is in smooth transition connection with the back surface of the blade through a concave part, and the concave part is tangent to the circular arc-shaped drainage edge.
Furthermore, the drainage bulge is close to the outer edge of the blade and inclines towards the outer edge of the blade, and the central line of the drainage bulge is in a circular arc shape, a linear shape or a spline line shape.
Further, the radius R1 of the circular arc-shaped drainage edge is smaller than the radius R2 of the concave part, and the radius R2 of the concave part is larger than 0.5 mm.
Further, the chord length of the blade is L0;
the projection distance L1 between the outer end starting point of the central line of the flow guide bulge and the outer edge vertex of the central line of the blade on the chord line of the blade;
the projection length of the intersection point of the central line of the flow guide bulge and the central line of the blade and the vertex of the outer edge of the central line of the blade on the chord line of the blade is L2;
the projection distance between the center point of the maximum thickness d0 of the blade and the outer edge vertex of the center line of the blade on the chord line of the blade is L3;
the L0, L1, L2 and L3 satisfy the following relations: l2 is more than L1 and less than or equal to L3, and L3/L0 is less than 0.5.
Further, the center point of the maximum thickness d0 of the blade is at a distance H0 perpendicular to the chord line of the blade;
the starting point of the outer end of the central line of the flow guide bulge is vertically separated from the chord line of the blade by H1;
the intersection point of the center line of the flow guide bulge and the center line of the blade is perpendicular to the chord line of the blade by a distance H2;
the H0, H1 and H2 satisfy the following relations: h1 < H0, H2 < H0.
Furthermore, the included angle between the central line of the drainage bulge and the tangent line of the central line of the blade is A1;
the tangent line at the central point of the maximum thickness d0 of the blade forms an included angle A0 with the tangent line of the central line of the blade;
the A0 and the A1 satisfy the following relation: a1> A0.
Furthermore, the drainage bulges extend in the length direction of the blade to form a long strip-shaped structure, or the drainage bulges intermittently extend in the length direction of the blade to form a plurality of drainage bulges distributed at intervals.
Further, the distance between the adjacent drainage bulges is d;
the length of the drainage bulge is d 1;
the length of the blade is h;
the relation that d, d1 and h satisfy is as follows: 0.5 ≦ d/d1 ≦ 3, 0 ≦ d1/h ≦ 0.3.
Further, the distance d between the adjacent drainage bulges is 5 mm;
the length d1 of the drainage bulge is 5 mm;
the length h of the blade is 65 mm;
the relation that d, d1 and h satisfy is as follows: d/d1 is 1, d1/h is 0.078.
Further, the distance d between the adjacent drainage bulges is 0 mm;
the length d1 of the drainage bulge is equal to the length h of the blade;
the relation that d, d1 and h satisfy is as follows: d/d1 is 0, d1/h is 1.
Furthermore, a plurality of middle fan blades are arranged and are sequentially connected in series; the center of the disc is provided with a through hole to form a circular structure; one end of each blade is connected with the disc surface of the disc and is perpendicular to the disc surface of the disc, and the blades are distributed at intervals along the circumferential direction of the disc.
An embodiment of the utility model provides an air conditioner is still provided, including panel, spiral case, spiral tongue and evaporimeter and foretell through-flow fan blade, the panel with the spiral case has enclosed into the wind channel, the through-flow fan blade is located in the wind channel, the spiral tongue with region between the spiral case is regional for giving vent to anger, the panel with top region between the spiral case is the regional domain of admitting air, the evaporimeter is located in the regional domain of admitting air.
The beneficial effects of the utility model reside in that: the drainage protrusions are arranged on the blade back surfaces of the blades, so that when the cross-flow fan blade rotates, airflow in the air inlet area and the air outlet area is dispersed and drained to the concave parts between the blades and the drainage protrusions by the blades, the airflow attack angle of the blades during air inlet can be effectively reduced, the airflow separation phenomenon that the blade back surfaces are close to the rear edges is reduced, the air volume of the indoor unit of the air conditioner can be effectively improved, and meanwhile, the noise of the indoor unit of the air conditioner is reduced.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
Fig. 1 is a schematic structural view of a cross-flow fan blade of the present invention;
fig. 2 is a schematic structural view of a fan blade in a through-flow fan blade of the present invention;
fig. 3 is a perspective view of a blade in a through-flow fan blade of the present invention;
FIG. 4 is an enlarged view of a blade in a through-flow fan according to the present invention;
FIG. 5 is a schematic view of the intermittently extending structure of the flow-guiding protrusion of the blade in the through-flow fan of the present invention;
FIG. 6 is a schematic view of a structure of the continuous extension of the flow guide protrusion of the blade in the through-flow fan of the present invention;
FIG. 7 is a schematic view of projection parameters of a blade in a through-flow fan according to the present invention;
FIG. 8 is a schematic view of the height parameters of the blades in a cross-flow fan according to the present invention;
FIG. 9 is a schematic view of the angle parameter of the blade in the cross flow fan according to the present invention;
fig. 10 is a schematic structural diagram of an air conditioner according to the present invention.
The figure includes: 1. a middle fan blade; 2. a disc; 3. a blade; 4. a through hole; 5. an outer edge; 6. an inner edge; 7. the back of the leaf; 8. a drainage bulge; 9. a recessed portion; 10. a circular arc-shaped drainage edge; 11. a drainage bulge center line; 12. a blade centerline; 13. starting from the outer end; 14. the outer edge vertex; 15. an intersection point; 16. the center point of maximum thickness of the blade; 17. a string; 18. A volute; 19. a volute tongue; 20. an evaporator; 21. a cross-flow fan blade; 22. an air outlet area; 23. an air intake region; 24. a panel.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.
Example one
As shown in fig. 1-3, the embodiment provides a through-flow fan blade, which includes a plurality of middle-segment fan blades 1, the plurality of middle-segment fan blades 1 are sequentially connected in series, the middle-segment fan blades 1 include a disk 2 and a plurality of blades 3, the plurality of blades 3 are fixed on the disk 2, a through hole 4 is formed in the central portion of the disk 2 to form a circular ring structure, one end of each blade 3 is connected with the disk surface of the disk 2 and is perpendicular to the disk surface of the disk 2, the plurality of blades 3 are distributed at intervals along the circumferential direction of the disk 2, a flow guide protrusion 8 is arranged on the blade back surface 7 of each blade 3, a concave portion 9 is arranged between the tail end of each blade 3 and the flow guide protrusion 8, and as the flow guide protrusion 8 is arranged on the blade back surface 7 of each blade 3, when the through-flow fan blade rotates, the blades 3 disperse and guide the air flows in an air inlet region 23 and, and then can be effectual reduce the air current attack angle when blade 3 admits air, reduce the blade back 7 and be close to the air current separation phenomenon of trailing edge, make indoor set increase the amount of wind 5% or noise reduction 1 ~ 1.5dBA for traditional through-flow fan blade.
The specific installation mode of a through-flow wind in this embodiment is as follows:
firstly, one end of each blade 3 is welded with the disc surface of the disc 2 and is vertical to the disc surface of the disc 2, the blades 3 are distributed at intervals along the circumferential direction of the disc 2, and the other end of each blade 3 is welded and fixed with the back surface of the disc 2 in the adjacent middle wind blade 1.
In the preferred embodiment, as shown in fig. 4, in the blade 3, the edge of the blade 3 far from the center of the disc 2 is an outer edge 5, the edge of the blade near the center of the disc is an inner edge 6, the cross section of the blade 3 is in a circular arc structure, the inner concave surface of the blade 3 is a basin, and the outer convex surface of the blade 3 is a blade back surface 7. A drainage bulge 8 is arranged on the blade back 7 of the blade 3 and close to the outer edge 5 of the blade; on the cross section of the blade 3, the drainage bulge 8 is provided with a circular arc-shaped drainage edge 10, the drainage bulge 8 is in smooth transition connection with the blade back 7 of the blade 3 through a concave part 9, and the concave part 9 is tangent to the circular arc-shaped drainage edge 10; furthermore, the central line 11 of the drainage bulge 8 is arc-shaped, linear or spline, and the drainage bulge 8 is arranged, so that the frequency peak staggering of airflow on the surface of the blade 3 is changed when the blade 3 rotates, the rotating noise generated by the rotation of the through-flow fan blade is reduced, and the noise of the indoor unit is reduced.
As shown in fig. 4, in the cross section of the blade 3, in the preferred embodiment, the radius R1 of the circular arc-shaped flow guiding edge 10 is smaller than the radius R2 of the recess 9, and the radius R2 of the recess 9 is greater than 0.5mm, so that the blade 3 with the size can effectively reduce the air flow attack angle when the blade enters air, reduce the flow separation loss and the low-speed vortex area, increase the air output of the air conditioner and reduce the noise.
As shown in fig. 4, in a preferred embodiment, on the cross section of the blade 3, the flow guide protrusion 8 is close to the outer edge 5 of the blade 3 and is inclined towards the outer edge 5 of the blade 3, the flow guide protrusion 8 and the blade 3 form a "Y" type structure or an "r" type structure, and an inner edge 6 is arranged at one end of the blade opposite to the outer edge 5, so that the blade 3 in the shape can effectively reduce the air flow attack angle when the blade enters air, reduce the flow separation loss and the low-speed vortex region, and increase the air output of the air conditioner and reduce the noise.
As shown in FIG. 7, in the preferred embodiment, the chord line 17 of the blade 3 is L0 long; the projection distance L1 between the outer end starting point 13 of the central line 11 of the flow guide bulge and the outer edge peak 14 of the central line 12 of the blade on the chord line 17 of the blade 3; the projection length of the intersection point 15 of the central line 11 of the flow guide bulge and the central line 12 of the blade and the outer edge vertex 14 of the central line 12 of the blade on the chord line 17 of the blade 3 is L2; the projection distance between the center point 16 of the maximum thickness d0 of the blade and the outer edge vertex 14 of the blade center line 12 on the chord line 17 of the blade 3 is L3; l0, L1, L2, L3 satisfy the relationship: l1 is more than L2 and less than or equal to L3, L3/L0 is less than 0.5, the designed drainage bulge 8 is structurally designed at the side of the inner edge 6 with the maximum thickness of the blade 6, the relative position of the maximum thickness position of the blade 3 is accurately limited, the performance of the cross-flow fan blade is further improved, the air output of the air conditioner is increased, and the noise is reduced.
As shown in FIG. 8, in the preferred embodiment, the center point 16 of the maximum blade thickness d0 is spaced a distance H0 perpendicular to the chord line 17 of the blade 3; the starting point 13 of the outer end of the central line 11 of the flow guide bulge is perpendicular to the chord line 17 of the blade 3 by a distance H1; the intersection point 15 of the flow-inducing bulge centerline 11 and the blade centerline 12 is at a perpendicular distance H2 from the chord line 17 of the blade 3; h0, H1, H2 satisfy the relationship: h1 < H0, H2 < H0, the height of the root of the designed flow guide bulge 8 does not exceed the height of the maximum thickness position of the blade, and the flow guide structure is arranged on the front side of the maximum thickness, so that the airflow direction on the rear side is improved, and the separation is reduced.
As shown in FIG. 9, in the preferred embodiment, the flow-inducing projection centerline 11 is at an angle A1 with respect to the tangent of the vane centerline 12; the included angle between the tangent of the central point 16 of the maximum thickness d0 of the blade and the tangent of the central line 12 of the blade is A0; a0 and A1 satisfy the following relationship: a1 is greater than A0, and the designed flow guide bulge 8 can effectively reduce the air flow attack angle when the fan blades enter air, and reduce the flow separation loss and the low-speed vortex area, so that the air outlet quantity of the air conditioner is increased, and the noise is reduced.
As shown in fig. 5-6, in a preferred embodiment, the drainage protrusion 8 extends in the length direction of the blade 3 to form a strip-shaped structure, or the drainage protrusion 8 extends intermittently in the length direction of the blade 3 to form a plurality of drainage protrusions 8 distributed at intervals, and further, the distance between adjacent drainage protrusions 8 is d; the length of the drainage projection 8 is d 1; the length of the blade 3 is h; d. d1, h satisfies the relationship: d/d1 ≦ 0.5 ≦ 3, d1/h ≦ 0.3, the utility model discloses a drainage protrusion 8 has at least two, forms a sawtooth shape on blade 3 surface at least. The zigzag distribution enables the impact frequency of the airflow on the surface of the blade and the volute tongue 19 to be changed in a staggered mode when the cross-flow fan blade rotates, and the rotation noise generated between the fan blade and the volute tongue 19 when the cross-flow fan blade rotates is reduced, so that the noise of the indoor unit is reduced.
As shown in fig. 5, in a preferred embodiment, the distance d between adjacent drainage projections 8 is 5 mm; the length d1 of the drainage bulge 8 is 5 mm; the length h of the blade 3 is 65 mm; d. d1, h satisfies the relationship: d/d1 is 1, and d1/h is 0.078, and the drainage structure is in 3 length direction of blade, and 3 length direction of blade have 6 sawtooth grooves, calculates through the emulation the utility model discloses the fan blade compares with the circumference relative velocity of current fan blade, and the relative velocity that 3 imports and exports of blade reduces about 0.5m/s, the effectual noise that has reduced.
The benefit of this embodiment is, through the emulation calculation the utility model discloses the circumference relative velocity contrast of fan blade and current fan blade, the relative velocity of 3 imports and exports of blade reduces about 0.5m/s, by a wide margin the noise that has reduced.
As shown in fig. 10, this embodiment still provides an air conditioner, including panel 24, spiral case 18, volute tongue 19 and evaporimeter 20 and the utility model discloses a through-flow fan blade 21, panel 24 and spiral case 18 have enclosed the wind channel, the utility model discloses a through-flow fan blade 21 is located the wind channel, and the region between volute tongue 19 and the spiral case 18 is the region 22 of giving vent to anger, and the top region between panel 24 and the spiral case 18 is the regional territory 23 that admits air, and evaporimeter 20 is located the regional territory 23 that admits air.
Example two
The difference between the present embodiment and the first embodiment as shown in fig. 6 is that: the distance d between the adjacent drainage bulges 8 is 0 mm; the length d1 of the flow guide projection 8 is equal to the length h of the blade 3; d. d1, h satisfies the relationship: d/d1 is 0, d1/h is 1, and airflow can be improved to facilitate air volume increase.
The advantage of this embodiment is, can improve the air current and flow and be favorable to the amount of wind promotion.
Examples of the experiments
Subject: the utility model discloses the through-flow fan blade of any one in embodiment 1-2 and any fan blade among the prior art.
Experimental criteria and purpose: the method comprises the following steps of respectively carrying out detection experiments on air volume (m3/h), noise dB (A) and power (W) of the cross-flow fan blade and the fan blade, and recording experimental results, wherein the results are shown in the following table one:
| air volume (m)3/h) | Noise dB (A) | Power (W) | |
| Existing fan blade | 480 | 44.8 | 28 |
| Through-flow fan blade of this patent | 476 | 43.4 | 27.8 |
According to the table one, the utility model provides a fan blade in prior art is compared to the through-flow fan blade, under the condition that keeps the amount of wind to be equivalent basically, can reduce indoor set noise 1.4dBA to the power that consumes also with prior art fan blade consumption still need few, still need few 0.2W even, verified the utility model discloses a through-flow fan blade not only can make the air conditioner increase the amount of wind, has still reduced the beneficial effect of noise simultaneously.
The utility model has the advantages that: the drainage protrusions are arranged on the blade back surfaces of the blades, so that when the cross-flow fan blade rotates, airflow in the air inlet area and the air outlet area is dispersed and drained to the concave parts between the blades and the drainage protrusions by the blades, the airflow attack angle of the blades during air inlet can be effectively reduced, the airflow separation phenomenon that the blade back surfaces are close to the rear edges is reduced, the air volume of the indoor unit of the air conditioner can be effectively improved, and meanwhile, the noise of the indoor unit of the air conditioner is reduced.
The above description is a preferred embodiment of the present invention, and certainly not intended to limit the scope of the present invention, it should be pointed out that, for a person skilled in the art, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the scope of the present invention.
Claims (13)
1. The utility model provides a cross-flow fan blade, is including a plurality of middle-section fan blades, middle-section fan blade is including disc and a plurality of blade, and is a plurality of the blade is fixed in on the disc, its characterized in that: the blade is characterized in that a drainage bulge is arranged on the back surface of the blade, and a concave part is arranged between the tail end of the blade and the drainage bulge.
2. The cross-flow fan blade of claim 1, wherein: the drainage bulge is provided with a circular arc-shaped drainage edge, the drainage bulge is in smooth transition connection with the blade back surface of the blade through a concave part, and the concave part is tangent to the circular arc-shaped drainage edge.
3. The cross-flow fan blade of claim 1, wherein: the drainage bulge is close to the outer edge position of the blade and inclines towards the outer edge direction of the blade, and the central line of the drainage bulge is in an arc shape, a linear shape or a spline shape.
4. The cross-flow fan blade of claim 2, wherein: the radius R1 of the circular arc drainage edge is smaller than the radius R2 of the concave part, and the radius R2 of the concave part is larger than 0.5 mm.
5. The cross-flow fan blade of claim 1, wherein:
the chord length of the blade is L0;
the projection distance L1 between the outer end starting point of the central line of the flow guide bulge and the outer edge vertex of the central line of the blade on the chord line of the blade;
the projection length of the intersection point of the central line of the flow guide bulge and the central line of the blade and the vertex of the outer edge of the central line of the blade on the chord line of the blade is L2;
the projection distance between the center point of the maximum thickness d0 of the blade and the outer edge vertex of the center line of the blade on the chord line of the blade is L3;
the L0, L1, L2 and L3 satisfy the following relations: l2 is more than L1 and less than or equal to L3, and L3/L0 is less than 0.5.
6. The cross-flow fan blade of claim 1, wherein:
the center point of the maximum thickness d0 of the blade is at a distance H0 perpendicular to the chord line of the blade;
the starting point of the outer end of the central line of the flow guide bulge is vertically separated from the chord line of the blade by H1;
the intersection point of the center line of the flow guide bulge and the center line of the blade is perpendicular to the chord line of the blade by a distance H2;
the H0, H1 and H2 satisfy the following relations: h1 < H0, H2 < H0.
7. The cross-flow fan blade of claim 1, wherein:
the included angle between the central line of the drainage bulge and the tangent line of the central line of the blade is A1;
the included angle between the tangent line at the central point of the maximum thickness d0 of the blade and the tangent line of the central line of the blade is A0;
the A0 and the A1 satisfy the following relation: a1> A0.
8. The cross-flow fan blade of claim 1, wherein: the drainage bulge extends in the length direction of the blade to form a long strip-shaped structure, or the drainage bulge intermittently extends in the length direction of the blade to form a plurality of drainage bulges distributed at intervals.
9. The cross-flow fan blade of claim 1, wherein:
the distance between the adjacent drainage bulges is d;
the length of the drainage bulge is d 1;
the length of the blade is h;
the relation that d, d1 and h satisfy is as follows: d/d1 is more than or equal to 0.5 and less than or equal to 3, and d1/h is more than or equal to 0 and less than or equal to 0.3.
10. The cross-flow fan blade of claim 9, wherein:
the distance d between the adjacent drainage bulges is 5 mm;
the length d1 of the drainage bulge is 5 mm;
the length h of the blade is 65 mm;
the relation that d, d1 and h satisfy is as follows: d/d1 is 1, d1/h is 0.078.
11. The cross-flow fan blade of claim 9, wherein:
the distance d between the adjacent drainage bulges is 0 mm;
the length d1 of the drainage bulge is equal to the length h of the blade;
the relation that d, d1 and h satisfy is as follows: d/d1 is 0, d1/h is 1.
12. The cross-flow fan blade of claim 1, wherein: the middle-section fan blades are provided with a plurality of middle-section fan blades which are sequentially connected in series, the central part of the disc is provided with a through hole to form a circular ring-shaped structure, one end of each blade is connected with the disc surface of the disc and is vertical to the disc surface of the disc, and the plurality of blades are distributed at intervals along the circumferential direction of the disc.
13. An air conditioner, characterized in that: the cross-flow fan blade comprises a panel, a volute tongue and an evaporator and the cross-flow fan blade as recited in any one of claims 1 to 12, wherein the panel and the volute enclose an air duct, the cross-flow fan blade is positioned in the air duct, an area between the volute tongue and the volute is an air outlet area, a top area between the panel and the volute is an air inlet area, and the evaporator is positioned in the air inlet area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921571466.1U CN211314639U (en) | 2019-09-20 | 2019-09-20 | Cross-flow fan blade and air conditioner with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921571466.1U CN211314639U (en) | 2019-09-20 | 2019-09-20 | Cross-flow fan blade and air conditioner with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211314639U true CN211314639U (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921571466.1U Active CN211314639U (en) | 2019-09-20 | 2019-09-20 | Cross-flow fan blade and air conditioner with same |
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| Country | Link |
|---|---|
| CN (1) | CN211314639U (en) |
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2019
- 2019-09-20 CN CN201921571466.1U patent/CN211314639U/en active Active
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