WO2018103342A1

WO2018103342A1 - Fan blade with circumferential air output and fan having same

Info

Publication number: WO2018103342A1
Application number: PCT/CN2017/093670
Authority: WO
Inventors: 柳洲; 贾铌; 梁浩; 尚勇
Original assignee: 珠海格力电器股份有限公司
Priority date: 2016-12-05
Filing date: 2017-07-20
Publication date: 2018-06-14
Also published as: CN106523429B; CN106523429A

Abstract

Disclosed are a fan blade with circumferential air output and a fan having same, the fan blade comprising an impeller spindle (300), and a first blade group (100) and a second blade group (200) and a separation plate (400) mounted on the impeller spindle (300). The first blade group (100) comprises a plurality of first blades (110) and the second blade group (200) comprises a plurality of second blades (210); the separation plate (400) is fixed to the impeller spindle (300), two sides of the separation plate (400) respectively face the first blade group (100) and the second blade group (200), and the separation plate (400) is located at an axial air output side of the first blade group (100) and the second blade group (200). With the provision of the separation plate (400), the fan blade with circumferential air output causes axially-flowing air to flow along a surface of the separation plate (400) under the action of the separation plate (400), thus realizing diverging and in-plane air output; meanwhile, the first blade group (100) and the second blade group (200) enable air to enter from both sides of the fan blade and to go out circumferentially from the fan blade, realizing a 360° blowing effect.

Description

Circumferential wind blades and fans with them

Related application

The present application claims priority to Chinese Patent Application No. 2016-1110216, filed on Dec. 5, 2016, entitled,,,,,,,,,,,,,,,,,,,,, .

Technical field

The present invention relates to the field of air conditioning technology, and in particular to a circumferential air outlet blade and a fan therewith.

Background technique

The traditional fan blade design is generally a single-sided air blow, and the fan ensures the blowing range by shaking the head. In the fan industry, the angle of the fan is 45 degrees, the air blowing area is narrow, there is no wind in the direction other than the wind surface, and the fan needs to have a shaking head system. The long-term operation will cause the fan's shaking head to fail, shaking the head and other problems. .

Summary of the invention

Based on this, it is necessary to provide a fan blade capable of achieving a 360 degree wind out of the circumferential blowing, and a fan having the fan blade, in view of the technical problems of a single fan having a single air outlet direction and a narrow blowing range. .

The above objectives are achieved by the following embodiments:

a circumferentially outgoing wind blade comprising an impeller shaft and a first blade group and a second blade group mounted on the impeller shaft; the first blade group includes a plurality of first blades, and the plurality of first blades are along the axis of the impeller a circumferential distribution; the second blade group includes a plurality of second blades, and the plurality of second blades are distributed along a circumferential direction of the impeller shaft;

The utility model further comprises a partition plate fixed on the impeller shaft; the two sides of the partition plate are respectively opposite to the first blade group and the second blade group, and the partition plate is located on the axial air outlet side of the first blade group and the second blade group .

In one embodiment, the first vane is in one-to-one correspondence with the second vane, and an outer edge of each of the first vanes and an outer edge of the corresponding second vane are connected by side vanes.

In one embodiment, the first blade has a first leading edge and a first trailing edge, the radius of the first leading edge being smaller than the radius of the first trailing edge;

The second vane has a second leading edge and a second trailing edge, the radius of the second leading edge being less than the radius of the second trailing edge.

In one of the embodiments, the difference between the radius of the first trailing edge and the radius of the first leading edge is 0.1 of the radius of the first trailing edge Up to 0.3 times;

The difference between the radius of the second trailing edge and the radius of the second leading edge is 0.1 to 0.3 times the radius of the second trailing edge.

In one embodiment, the side vanes are curved structures; each side vane intersects with the axial center cross section of the impeller shaft in an arc segment, and a plurality of arc segments are connected to form a boundary circle, and the radius of the boundary circle is not Less than the radius of the first trailing edge or the second trailing edge.

In one of the embodiments, the center of the boundary circle is located on the axis of the impeller shaft.

In one of the embodiments, the partition is perpendicular to the axis of the impeller shaft, and the distance from the center of rotation of the first set of blades to the partition is equal to the distance from the center of rotation of the second set of blades to the partition.

In one of the embodiments, the spacer is a circular plate and the boundary circle coincides with the edge of the spacer.

In one of the embodiments, the projection of the first set of blades on the axial center cross section of the impeller shaft is at an angle to the projection of the second set of blades on the axial center cross section of the impeller shaft.

In one embodiment, the angle of the central angle corresponding to the outer edge of the first blade or the outer edge of the second blade is the blade angle;

The angle between the centerline of the first blade and the centerline of the corresponding second blade is 0.5 to 1.5 times the blade angle.

In one embodiment, the first blade and the second blade are the same in size and number, and the plurality of first blades and the plurality of second blades are evenly distributed along the circumferential direction of the impeller shaft.

In one embodiment, the circumferentially outgoing blades further include a first hub and a second hub, the first hub and the second hub being disposed coaxially with the impeller shaft;

The plurality of first blades are fixedly disposed on the outer circumferential surface of the first hub along the circumferential direction of the first hub, and the plurality of second blades are fixedly disposed on the outer circumferential surface of the second hub along the circumferential direction of the second hub.

A fan, comprising a motor, further comprising a circumferential air outlet blade according to any one of the preceding claims, wherein a motor shaft of the motor is coupled to the impeller shaft to drive the impeller shaft to rotate.

In the circumferential wind-extracting fan blade, the impeller shaft rotates to drive the first blade group and the second blade group to rotate thereon, and the plurality of first blades and the plurality of second blades rotate on the axis of the impeller shaft, thereby enabling The air flows along the axial direction of the impeller shaft, and a partition plate is disposed on the axial air outlet side of the first blade group and the second blade group, and the flowing air flows along the surface of the partition plate under the barrier action of the partition plate. The divergent plane wind is present, so that the circumferential wind can be realized, and the air blowing area of the wind blade is increased, and the first blade group and the second blade group are allowed to enter the wind on both sides of the blade, and can be along the wind. The circumferential wind of the leaves really achieves a 360° blowing effect.

Since the wind blade of the circumferential wind has the above technical effects, the fan including the wind blade of the circumferential wind also has a corresponding technique. Effect.

DRAWINGS

1 is a perspective structural view of a circumferentially outgoing wind blade according to an embodiment of the present invention;

2 is a front view 1 of a circumferential air outlet blade according to an embodiment of the present invention;

3 is a front view view 2 of a circumferential air outlet blade according to an embodiment of the present invention;

4 is a top plan view of a circumferential air outlet blade according to an embodiment of the present invention;

FIG. 5 is a flow diagram of an air flow during operation of a circumferential air outlet according to an embodiment of the present invention.

among them:

100-first blade set;

110-first blade; 111-first leading edge; 112-first trailing edge;

200-second blade set;

210-second blade; 211-second leading edge; 212-second trailing edge;

300-impeller shaft;

310-first hub; 320-second hub;

400-separator;

500-side guide vanes;

510-boundary circle.

detailed description

In order to make the objects, technical solutions, and advantages of the present invention more comprehensible, the circumferentially ventilating blades of the present invention and the fan having the same will be further described in detail below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1 , the present embodiment provides a circumferential air outlet blade, including an impeller shaft 300 and a first blade set 100 and a second blade set 200 mounted on the impeller shaft 300; the first blade set 100 A plurality of first blades 110 are included, and a plurality of first blades 110 are distributed along the circumferential direction of the impeller shaft 300; the second blade group 200 includes a plurality of second blades 210, and the plurality of second blades 210 are distributed along the circumferential direction of the impeller shaft 300. ;

Also included is a baffle 400 that is secured to the impeller shaft 300; the sides of the baffle 400 are opposite the first vane set 100 and the second vane set 200, respectively, and the baffle 400 is located in the first vane set 100 and the second Axial out of the blade set 200 Wind side.

The shape of the spacer 400 may be various, such as a circle, a square, an ellipse or the like. The partition 400 may be perpendicular to the impeller shaft 300 such that both sides of the partition 400 are opposite to the first vane set 100 and the second vane set 200; the partition 400 may not be perpendicular to the impeller shaft 300, ie, the partition 400 and The axis of the impeller shaft 300 has an angle between it as long as both sides of the partition 400 are opposed to the first blade group 100 and the second blade group 200.

Preferably, the diaphragm 400 is perpendicular to the impeller shaft 300. In this way, the partition 400 can be perpendicular to the direction in which the air flows, so that the air sucked by the vane is blown along the surface of the partition 400 by the partition 400, thereby achieving the circumferential airflow along the impeller shaft 300, thereby Achieve the circumferential wind of the blades.

The number of the first blades 110 should be at least two, and the two or more first blades 110 are distributed along the circumferential direction of the impeller shaft 300. Of course, they may be uniformly distributed or unevenly distributed. Preferably, The plurality of first blades 110 are evenly distributed along the circumferential direction of the impeller shaft 300, thus facilitating the uniformity of the wind.

The first blade set 100 may be directly mounted on the impeller shaft 300 or indirectly mounted on the impeller shaft 300. Preferably, the impeller shaft 300 is coaxially disposed with a first hub 310, and the plurality of first blades 110 are along the first The circumferential direction of the hub 310 is fixedly disposed on the outer peripheral surface of the first hub 310, thus facilitating reliable mounting of the blades. The plurality of first blades 110 may be detachably mounted on the impeller shaft 300 or the first hub 310, or may be welded to the impeller shaft 300 or the first hub 310.

The number of the second blades 210 should also be at least two, and the two or more second blades 210 are distributed along the circumferential direction of the impeller shaft 300. Of course, they may be uniformly distributed or unevenly distributed, preferably The plurality of second blades 210 are evenly distributed along the circumferential direction of the impeller shaft 300, thus facilitating the uniformity of the wind.

The second blade set 200 may also be directly mounted on the impeller shaft 300, or may be indirectly mounted on the impeller shaft 300. Preferably, the impeller shaft 300 is coaxially disposed with a second hub 320, and the plurality of second blades 210 are along The circumferential direction of the second hub 320 is fixedly disposed on the outer peripheral surface of the second hub 320, thus facilitating reliable mounting of the blades. The plurality of second blades 210 may be detachably mounted on the impeller shaft 300 or the second hub 320, or may be welded to the impeller shaft 300 or the second hub 320.

In addition, the distance from the first blade set 100 to the partition 400 may be the same as or different from the distance from the second blade set 200 to the partition 400. The blade sizes of the plurality of first blades 110 of the first blade group 100 and the plurality of second blades 210 of the second blade group 200 may be the same or different, and the number of blades may be the same or different, or the first blade 110 may be When the second blades 210 are in one-to-one correspondence, the first blades 110 and the second blades 210 may be directly opposite or may not be facing each other.

Preferably, the first blade group 100 and the second blade group 200 have the same blade size, and the number of blades is the same, that is, the first blade group 100 and the second blade group 200 are identical sets of two blades, which can ensure The air intake and air intake speed on both sides of the wind blade are the same. In the present embodiment, the first blades 110 are five, and the five first blades 110 are the same size and uniformly distributed along the circumferential direction of the impeller shaft 300. The second blades 210 are five, and the five second blades 210 are the same size and uniformly distributed along the circumferential direction of the impeller shaft 300. The number of blades is five, which makes the wind pressure and air volume of the blades relatively large.

Further, the first blade set 100 and the second blade set 200 are disposed in an axisymmetric relationship along the axial center cross section of the impeller shaft 300.

It can be understood that the first blade set 100 and the second blade set 200 are axially symmetrically disposed along the axial center cross section of the impeller shaft 300, that is, the projection of the first blade set 100 on the axial center cross section of the impeller shaft 300 and The projection of the second blade set 200 on the axial center cross section of the impeller shaft 300 can be coincident, that is, the first blade set 100 and the second blade set 200 are exactly the same two sets of blades, and the first blade 110 and the first blade The two blades 210 are in one-to-one correspondence, and the first blade 110 and its corresponding second blade 210 are directly opposite each other. The axisymmetric arrangement can ensure that the forces and moments generated by the first blade set 100 and the second blade set 200 on the impeller shaft 300 are equal and opposite in direction when the blades are in operation, thereby reducing the impeller shaft 300 received during rotation. Additional additional force and torque.

In the circumferentially outgoing blades of the present embodiment, the plurality of first blades 110 and the plurality of second blades 210 rotate about the axis of the impeller shaft 300 to cause air to flow in the axial direction of the impeller shaft 300, due to the partition The two sides of the 400 are opposite to the first blade set 100 and the second blade set 200, respectively, that is, the partition 400 is between the first blade set 100 and the second blade set 200, and the partition 400 is located in the axial direction of both. On the air outlet side, the flowing air flows along the surface of the partition plate 400 under the barrier action of the partition plate 400, and exhibits a divergent air-discharging effect, so that the wind vane can be ventilated along the circumferential direction of the impeller shaft 300, increasing The air blowing area of the blades.

When the blades are in operation, the first blade group 100 and the second blade group 200 can realize the bidirectional air inlet of the blades, that is, axially inwardly from both sides of the blades, thereby increasing the air intake of the blades and enabling The air is ventilated along the circumferential direction of the impeller shaft 300 by the action of the partition plate 400, so that not only the flow of wind can be felt on both sides of the blade, but also a large air volume, 360° in the circumferential direction of the blade. All-round wind effect.

As a preferred embodiment, the first blade 110 and the second blade 210 are in one-to-one correspondence, and the outer edge of each of the first blades 110 and the outer edge of the corresponding second blade 210 are connected by the side guide vanes 500. The side guide vane 500 has a guiding effect on the wind, and functions to avoid the disturbance of the wind field. During the operation of the blade, the wind diverging in the circumferential direction is blown along the side guide vane 500, and the wind is passed through the side guide. The leaf 500 is capable of pressing the wind out of the circumferential direction to form a better circumferential wind output effect.

Referring to Figures 2 and 3, as a preferred embodiment, the first blade 110 has a first leading edge 111 and a first tail The edge 112 has a radius of the first leading edge 111 that is smaller than a radius of the first trailing edge 112;

The second blade 210 has a second leading edge 211 and a second trailing edge 212, the radius of the second leading edge 211 being smaller than the radius of the second trailing edge 212.

In this way, the first blade 110 and the second blade 210 form a certain rear centrifugal blade shape, while the side of the side guide vane 500 near the first leading edge 111 is lower than the side of the side vane 500 near the first trailing edge 112. Similarly, the side of the side vane 500 near the second leading edge is lower than the side of the side vane 500 near the second trailing edge, so that the side vane 500 has a better oblique guiding effect on the wind, thereby making it better. Realize the circumferential wind of the blades.

Further, the difference between the radius of the first trailing edge 112 and the radius of the first leading edge 111 is 0.1 to 0.3 times the radius of the first trailing edge 112; the radius of the second tail 212 and the radius of the second leading edge 211 The difference is 0.1 to 0.3 times the radius of the second trailing edge 212.

Referring to Figure 2, illustrated by the first blade 110 of the first blade set 100, R1 represents the radius of the first leading edge 111, and R represents the radius of the first trailing edge 112, i.e., R > R1, further, 0.3*R ≥ R-R1 ≥ 0.1 * R. Similarly, the design of the second blade 210 of the second blade set 200 refers to the first blade 110.

As a preferred embodiment, the side vanes 500 are curved structures; each side vane 500 intersects with the axial center cross section of the impeller shaft 300 in an arc segment, and a plurality of arc segments are connected to form a boundary circle 510. The radius of the boundary circle 510 is not less than the radius of the first trailing edge 112 or the second trailing edge 212.

Referring to FIG. 4, the dotted line represents the contour line of the boundary circle 510 such that the radius of the boundary circle 510 is not less than the R value, so that the side guide vane 500 does not have a depressed portion, and the outer edge of the first vane 110 and the The outer edge of the two blades 210 can smoothly transition through the side guide vanes 500, thereby ensuring the integrity of the appearance of the fan.

Further, the center of the boundary circle 510 is located on the axis of the impeller shaft 300, that is, the geometric center of the plurality of side vanes 500 coincides with the geometric center of the overall vane, and no twist angle occurs, thereby ensuring a low vane. Power consumption and soft wind effect.

Still further, the partition 400 is perpendicular to the axis of the impeller shaft 300, and the distance from the center of rotation of the first set of blades 100 to the partition 400 is equal to the distance from the center of rotation of the second set of blades 200 to the partition 400. That is, at this time, the plane of the partition 400 corresponds to the axial center cross section of the impeller shaft 300, so that the wind entering from both sides of the vane reaches the partition 400 through the same distance, and is perpendicular to the surface of the partition 400. The impeller shaft 300 is blown out circumferentially to ensure uniformity of airflow on both sides, thereby improving comfort.

Still further, the spacer 400 is a circular plate, and the boundary circle 510 coincides with the edge of the spacer 400, so that the overall appearance of the blade is better.

As a preferred embodiment, the projection of the first blade set 100 on the axial center cross section of the impeller shaft 300 There is an angle with the projection of the second blade set 200 on the axial center cross section of the impeller shaft 300.

In this embodiment, the size of the first blade 110 and the second blade 210 are the same, and the number of the first blades 110 and the number of the second blades 210 are also the same, and the first blade 110 and the second blade 210 are One-to-one correspondence, however, the first blade 110 and the second blade 210 are not directly opposite, and have an angle therebetween, in other words, the center line of the first blade 110 and the center of the corresponding second blade 210 There is an angle between the lines.

In this way, when the first blade 110 and the second blade 210 are connected by the side guide vane 500 of the curved structure, the blade forms a twist angle similar to that of the centrifugal blade, which facilitates direct discharge of the axially drawn wind directly in the circumferential direction. The purpose of 360° wind.

Preferably, the included angle is 0.5 to 1.5 times the blade angle, wherein the blade angle is an angle of a central angle of the first blade 110 or an outer edge of the second blade 210. Referring to FIG. 3, the blade angle is b, the angle between the center line of the first blade 110 and the center line of the corresponding second blade 210 is a, a = (0.5 to 1.5) * b, that is, the first The blade 110 is offset from the corresponding second blade 210 by 0.5 to 1.5 blade angles, i.e., the projection of the first blade 110 and the corresponding second blade 210 on the spacer 400 is partially coincident or not coincident at all.

Specifically, the angle a is too small, that is, the torsion angle of the first blade 110 and the corresponding second blade 210 is too small, which is disadvantageous to the overall fabrication of the blade; the angle a is too large, that is, the first blade 110 and the corresponding first If the torsion angle of the two blades 210 is too large, for example, more than 1.5 blade angles, the distance between the first blade 110 and the corresponding second blade 210 on the same plane spans the distance of one blade, which may cause the side vane 500 to twist. The corner is too large, the leaf path is too long, the useless work is increased, and the efficiency of the blade is lowered.

In the circumferential blade of the circumferential airflow of this embodiment, the wind effect is as shown in FIG. 5. Among them, the material of the blade can be ABS (acrylonitrile-butadiene-styrene copolymer, a plastic raw material) or AS (acrylonitrile-styrene copolymer, a resin raw material), etc., and the first The blade set 100, the second blade set 200, the side guide vanes 500, and the partition 400 are integrally injection molded or ultrasonically welded.

The embodiment of the present invention further provides a fan, including a motor, and further comprising a circumferential air outlet blade of any of the above embodiments, wherein the motor shaft of the motor is coupled to the impeller shaft 300 to drive the impeller shaft 300 to rotate. Therefore, the fan can realize a large air volume of 360°, and the sweeping area is greatly increased, and the shaking head system is no longer needed, thereby avoiding the problem of shaking head failure caused by the long-term operation of the traditional fan moving head system, and improving the reliability of the fan operation.

Further, the circumferential blades of the present embodiment can be applied not only to the fan but also to the air outlet system such as an air conditioner.

The above-mentioned embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that for those of ordinary skill in the art, A number of variations and modifications may be made without departing from the spirit of the invention, and these are within the scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

a circumferentially outgoing blade comprising an impeller shaft (300) and a first blade set (100) and a second blade set (200) mounted on the impeller shaft (300); the first blade set (100) including a plurality of first blades (110), a plurality of the first blades (110) distributed along a circumferential direction of the impeller shaft (300); the second blade group (200) including a plurality of second a blade (210), a plurality of the second blades (210) distributed along a circumferential direction of the impeller shaft (300); and characterized in that further comprising a partition (400), the partition (400) being fixed at the Said on the impeller shaft (300);

Two sides of the partition (400) are opposite to the first blade set (100) and the second blade set (200), respectively, and the partition (400) is located in the first blade set (100) And an axial air outlet side of the second blade set (200).
The circumferentially outgoing fan blade according to claim 1, wherein the first blade (110) is in one-to-one correspondence with the second blade (210), and each of the first blades (110) The outer edge is connected to the outer edge of the corresponding second blade (210) by side guide vanes (500).
The circumferentially outgoing blade according to claim 2, wherein the first blade (110) has a first leading edge (111) and a first trailing edge (112), the first leading edge The radius of (111) is smaller than the radius of the first trailing edge (112);

The second vane (210) has a second leading edge (211) and a second trailing edge (212), the second leading edge (211) having a radius that is less than a radius of the second trailing edge (212).
The circumferentially outgoing fan blade according to claim 3, wherein a difference between a radius of the first trailing edge (112) and a radius of the first leading edge (111) is the first 0.1 to 0.3 times the radius of the trailing edge (112);

The difference between the radius of the second trailing edge (212) and the radius of the second leading edge (211) is 0.1 to 0.3 times the radius of the second trailing edge (212).
The circumferentially-disposed wind blade according to claim 3 or 4, wherein the side guide vanes (500) are curved structures; each of the side guide vanes (500) and the impeller shaft (300) The axial center cross-sections intersect to form an arc segment, and the plurality of arc segments are connected to form a boundary circle (510), the radius of the boundary circle (510) is not less than the first trailing edge (112) or The radius of the second trailing edge (212).
The circumferentially outgoing blade according to claim 5, characterized in that the center of the boundary circle (510) is located on the axis of the impeller shaft (300).
The circumferentially outgoing blade according to claim 6, wherein said partition (400) is perpendicular to an axis of said impeller shaft (300), said center of rotation of said first set of blades (100) The distance to the partition (400) is equal to The distance from the center of rotation of the second set of blades (200) to the diaphragm (400).
The circumferentially outgoing blade according to claim 7, wherein said partition (400) is a circular plate, and said boundary circle (510) coincides with an edge of said partition (400).
The circumferentially outgoing blade according to claim 2, characterized in that the projection of the first blade set (100) on the axial center cross section of the impeller shaft (300) and the second The projection of the blade set (200) on the axial center cross section of the impeller shaft (300) has an included angle.
The circumferentially outgoing wind blade according to claim 9, wherein an angle of a central angle corresponding to an outer edge of the first blade (110) or an outer edge of the second blade (210) is a blade angle;

An angle between a centerline of the first blade (110) and a centerline of the corresponding second blade (210) is 0.5 to 1.5 times the blade angle.
The circumferential fan blade according to claim 1, wherein the first blade (110) and the second blade (210) are the same size and number, and the plurality of the first The blade (110) and the plurality of the second blades (220) are evenly distributed along the circumferential direction of the impeller shaft (300).
The circumferentially outgoing blade of claim 1 further comprising a first hub (310) and a second hub (320), said first hub (310) and said second hub ( 320) are both disposed coaxially with the impeller shaft (300);

A plurality of the first blades (110) are fixedly disposed on an outer circumferential surface of the first hub (310) along a circumferential direction of the first hub (310), and a plurality of the second blades (210) are along The circumferential direction of the second hub (320) is fixedly disposed on the outer circumferential surface of the second hub.
A fan, comprising an electric motor, characterized by further comprising a circumferential air outlet blade according to any one of claims 1 to 12, wherein a motor shaft of the motor is coupled to the impeller shaft (300) to drive The impeller shaft (300) rotates.