阅读说明：本技术 一种用于提升扇叶性能的叶片结构及其车用风扇 (Blade structure for improving performance of fan blade and automobile fan with blade structure ) 是由 不公告发明人 于 2020-12-30 设计创作，主要内容包括：一种用于提升扇叶性能的叶片结构及其车用风扇,其叶片结构包括安装在扇叶上的叶片,每个叶片的开放端上均安装有至少一个翼尖帆,翼尖帆位于叶片的端面处设置有凸出叶片端面的翼尖帆,每个叶片上的翼尖帆互不相连。其车用风扇包括外壳,外壳上设置有两条由上至下间距逐渐变小的卡扣斜板,两块卡扣斜板之间构成卡扣锥槽,卡扣锥槽底部为止退凸起,卡扣锥槽与锥形板卡合装配,锥形板上设置有锥形卡扣凸起,锥形卡扣凸起内侧与止退凸起的端面贴紧从而实现锥形板与卡扣锥槽的卡扣装配,锥形板具有弹性；锥形板安装在护罩上,护罩上设置有数个贯穿的通槽,内安装有扇叶,扇叶安装在电机的电机轴上,电机安装在外壳上,扇叶上安装有多个叶片。(The utility model provides a blade structure and automobile-used fan for promoting flabellum performance, its blade structure all installs at least one wingtip sail including installing the blade on the flabellum on the open end of every blade, and the wingtip sail is located the terminal surface department of blade and is provided with the wingtip sail of protrusion blade terminal surface, and the wingtip sail on every blade is not continuous each other. The automotive fan comprises a shell, wherein two buckle inclined plates with gradually reduced intervals from top to bottom are arranged on the shell, a buckle conical groove is formed between the two buckle inclined plates, a stopping bulge is arranged at the bottom of the buckle conical groove, the buckle conical groove is clamped and assembled with a conical plate, a conical buckle bulge is arranged on the conical plate, the inner side of the conical buckle bulge is tightly attached to the end surface of the stopping bulge, so that the buckle assembly of the conical plate and the buckle conical groove is realized, and the conical plate has elasticity; the conical plate is installed on the guard shield, is provided with the logical groove that the several runs through on the guard shield, installs the flabellum in, and the flabellum is installed on the motor shaft of motor, and the motor is installed on the shell, installs a plurality of blades on the flabellum.)

1. The utility model provides a blade structure for promoting flabellum performance, characterized by: including installing the blade on the flabellum, all install at least one wingtip sail on the open end of every blade, the wingtip sail is located the terminal surface department of blade and is provided with the wingtip sail of protrusion blade terminal surface, and the wingtip sail on every blade is not continuous each other.

2. The blade structure of claim 1 wherein: in the axial orthographic projection direction of the fan blades, the wingtip sail is arc-shaped, and the outline diameter of the outermost arc is the diameter of the blade tip position of the fan blade.

3. The blade structure of claim 1 wherein: the height of the wing tip sail does not exceed 1/4 of the radius length of the fan blade.

4. The blade structure of claim 1 wherein: the thickness of the wingtip sail is between 0.5mm and 3 mm.

5. The blade structure of claim 1 wherein: the included angle alpha formed by the inner surface of the wingtip sail and the axial direction of the wingtip sail is 0.5-3 degrees.

6. A vane structure as claimed in any one of claims 1 to 5, characterized in that: the wingtip sail is integrally arranged on the upper portion of the fan blade or is distributed along the top and bottom of the tip portion of the fan blade in a half-distribution mode, when the height of the upper half portion of the wingtip sail is lower than the radius size 1/10 of the fan blade, the height of the wingtip sail needs to be adjusted to be 1/4 that the height of the wingtip sail does not exceed the radius length of the fan blade, and therefore the height of the wingtip sail on the upper half portion of the fan blade is guaranteed.

7. The blade structure of claim 6 wherein: the wingtip sail, the blades and the fan blades are formed in an injection molding mode, so that the wingtip sail, the blades and the fan blades are of an integral structure.

8. A fan for a vehicle, characterized in that: use of a blade structure according to any of claims 1-7.

9. The vehicular fan as set forth in claim 8, wherein: the clamping device is characterized by further comprising a shell, wherein two buckling inclined plates with gradually reduced intervals from top to bottom are arranged on the shell, a buckling conical groove is formed between the two buckling inclined plates, a stopping bulge is arranged at the bottom of the buckling conical groove, the buckling conical groove is clamped and assembled with the conical plate, a conical buckling bulge is arranged on the conical plate, the inner side of the conical buckling bulge is tightly attached to the end surface of the stopping bulge, so that the buckling assembly of the conical plate and the buckling conical groove is realized, and the conical plate has elasticity;

the conical plate is installed on the shield, is provided with the logical groove that the several runs through on the shield, install the flabellum in, the flabellum is installed on the motor shaft of motor, and the motor is installed on the shell, on the flabellum, evenly install a plurality of blades along its circumferencial direction.

10. The vehicular fan according to claim 9, characterized in that: the shell is provided with an installation clamping ring, one end of the installation clamping ring is opened, the inner side of the installation clamping ring is provided with an installation inner ring, the side wall of the installation inner ring is provided with an arc-shaped bulge, and the arc-shaped bulge is clamped into an installation seat ring groove of the installation seat, so that the installation seat is installed on the installation clamping ring; the mounting snap ring is elastic, so that the arc-shaped protrusion is clamped in the mounting seat ring groove through elastic deformation.

Technical Field

The present invention relates to a fan for a vehicle, and more particularly, to a blade structure for improving performance of a fan blade and a fan for a vehicle.

Background

Along with the increase of the electrification and intelligentization degree of the automobile, a plurality of electronic components are carried in the whole automobile, wherein a part of control chips or communication chips are required to be actively cooled and radiated by air because of huge calculation amount and closed installation environment, so that the chips can work in a proper temperature environment.

The small fans are used for matching with the chips of the whole automobile, the installation environment of the small fans is usually in a passenger compartment and belongs to a part system which is closest to a passenger, and in addition, for electrified automobiles, in order to improve the endurance mileage of the automobiles with equal battery capacity, the current consumption of all electronic parts is very sensitive, in other words, the efficiency requirement for the small fans is also improved.

The defects and shortcomings of the prior art are as follows:

the conventional product can use a ring-free fan or a ring-shaped fan as a fluid component, and a motor drives fan blades to rotate so as to drive air to flow.

The ring-free fan (the wing tip sail is removed in the attached drawings) can be driven by the motor to run at a high rotating speed. Meanwhile, the structure of the ring-free fan enables the integral unbalance of the fan blades to be low, so that the vibration generated in the rotating process is low. However, because the ring-free fan is adopted, when air passes through the side edges of the fan blades, vortex flows are generated due to different air pressures on two surfaces of the fan blades, and the vortex flows at the wing tips increase the resistance of the fan to move, so that the operation efficiency of the fan is reduced.

There is the circle fan because the wing tip vortex that has effectively reduced the flabellum side has promoted the work efficiency of flabellum, but in practical application, there is the circle fan can produce round material weld line (at flabellum external fixation round outer lane, the outer lane comprises a rectangle rectangular strip at the flabellum external fixation, and its junction passes through the weld line connection) because of the material flows at the manufacturing process, and this circle weld line often is the weak place of part structural strength. Because of the limitation of the welding line, the rotating speed of the fan blade is limited under the limitation of not replacing higher-grade materials, and more abundant application cannot be realized.

Disclosure of Invention

In view of the above-mentioned defects of the prior art, the present invention provides a blade structure for improving the performance of a fan blade and a fan for a vehicle thereof, wherein the blade structure can effectively reduce the vortex and the resistance by adding a wingtip sail.

In order to achieve the above object, the present invention provides a blade structure for improving the performance of a fan blade, including blades mounted on the fan blade, wherein at least one wingtip sail is mounted on an open end of each blade, the wingtip sail is provided at an end surface of the blade, the wingtip sail protrudes out of the end surface of the blade, and the wingtip sails on each blade are not connected with each other.

As a further improvement of the invention, in the axial orthographic projection direction of the fan blade, the wingtip sail is in a circular arc shape, and the outline diameter of the outermost circular arc is the diameter of the position of the blade tip of the fan blade.

As a further improvement of the invention, the height of the wingtip sail does not exceed 1/4 the length of the radius of the fan blade.

As a further improvement of the invention, the thickness of the wingtip sail is between 0.5mm and 3 mm.

As a further improvement of the invention, the included angle alpha formed by the inner surface of the wingtip sail and the axial direction of the wingtip sail is 0.5-3 degrees.

As a further improvement of the invention, the wingtip sail is integrally arranged on the upper part of the fan blade or is distributed along the tip part of the fan blade in a manner that the height of the wingtip sail is less than the radius size 1/10 of the fan blade, and when the height of the upper half part of the wingtip sail is less than the radius length 1/4 of the fan blade, the height of the wingtip sail is required to be adjusted to be less than the radius length of the fan blade, so that the height of the wingtip sail on the upper half part of the fan blade is ensured.

As a further improvement of the invention, the wingtip sail, the blades and the fan blades are molded together by injection molding to form an integral structure.

The invention also discloses a vehicle fan, which is applied with the blade structure.

As a further improvement of the invention, the improved structure further comprises a shell, wherein two buckle inclined plates with gradually reduced intervals from top to bottom are arranged on the shell, a buckle conical groove is formed between the two buckle inclined plates, a stopping bulge is arranged at the bottom of the buckle conical groove, the buckle conical groove is assembled with the conical plate in a clamping manner, a conical buckle bulge is arranged on the conical plate, the inner side of the conical buckle bulge is tightly attached to the end surface of the stopping bulge so as to realize the buckling assembly of the conical plate and the buckle conical groove, and the conical plate has elasticity;

the conical plate is installed on the shield, is provided with the logical groove that the several runs through on the shield, install the flabellum in, the flabellum is installed on the motor shaft of motor, and the motor is installed on the shell, on the flabellum, evenly install a plurality of blades along its circumferencial direction.

As a further improvement of the invention, the shell is provided with an installation clamping ring, one end of the installation clamping ring is opened, the inner side of the installation clamping ring is provided with an installation inner ring, the side wall of the installation inner ring is provided with an arc-shaped bulge, and the arc-shaped bulge is clamped into the installation seat ring groove of the installation seat, so that the installation seat is installed on the installation clamping ring; the mounting snap ring is elastic, so that the arc-shaped protrusion is clamped in the mounting seat ring groove through elastic deformation.

The invention has the beneficial effects that:

the wing tip sail can effectively reduce the eddy at the wing tip of the fan blade, so that the running resistance brought by the eddy is reduced, the vibration generated by the eddy is also reduced, and the integral wind noise performance of the product is better. The performance curves (simulation) for fans without winglets and with winglets for the same blade profile design as shown in fig. 12 show that the fan with the winglets consumes approximately 7% less current than the fan without the winglets for a similar fluid performance, and that the fan blades with the winglets improve the operating efficiency of the fan itself.

Meanwhile, as the wing tips are not connected, an outer ring welding line similar to a ring fan does not exist, so that the fan blade can still be applied under the high-speed condition, and a firmer material does not need to be replaced, so that the fan blade with the light weight design becomes possible. Meanwhile, the light fan blades reduce the load of the motor, so that the service life of the motor is prolonged.

Drawings

Fig. 1-5 are schematic structural views of the present invention. Wherein fig. 4 and 5 are cross-sectional views a-A, B-B, respectively, of fig. 3.

Fig. 6-7 are schematic views of the present invention with the shield removed.

Fig. 8 is a schematic view of the structure of the shield.

Fig. 9-10 are schematic views of fan blade structures.

Fig. 11 is a schematic view of a modified structure of a wedge-shaped block.

Fig. 12 is a graph of the results of a simulation of fan performance curves.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 10, the vehicle fan of the present embodiment includes a housing 110, wherein a mounting snap ring 120 is disposed on the housing 110, one end of the mounting snap ring 120 is open, and an inner mounting ring 121 is disposed on the inner side of the mounting snap ring 120, an arc-shaped protrusion 122 is disposed on a side wall of the inner mounting ring 121, and the arc-shaped protrusion 122 is clamped into a mounting seat ring groove 131 of a mounting seat 130, so that the mounting seat 130 is mounted on the mounting snap ring 120; the mounting snap ring 120 has elasticity such that it clamps the arc-shaped protrusion 122 in the mounting seat ring groove 131 by the elastic force of elastic deformation. When the fan needs to be installed, the bolt penetrates through the installation seat 130 to be assembled with an external device.

Still be provided with two buckle swash plates 140 that from top to bottom interval diminishes gradually on the shell 110, constitute buckle taper groove 141 between two buckle swash plates 140, buckle taper groove 141 bottom is stopping protruding 142, buckle taper groove 141 and conical plate 220 block assembly, be provided with the protruding 221 of toper buckle on the conical plate 220, thereby the protruding 221 inboard of toper buckle pastes tightly with the terminal surface that the protruding 142 of stopping and realizes conical plate 220 and buckle taper groove 141's buckle assembly, conical plate 220 has elasticity.

The tapered plate 220 is mounted on the shroud 210, and the shroud 210 is provided with a plurality of through slots therethrough to facilitate airflow. Install flabellum 300 in the shell 110, flabellum 300 installs on the motor shaft of motor, and the motor is installed on shell 100, and the motor starts the back and can drive flabellum 300 circumferential rotation, can produce the air current when flabellum 300 circumferential rotation, and the air current is worn out from the logical groove of guard shield 210. The motor and fan blades 300, how the motor is mounted on the housing 110, and the prior art, reference may be made to a similar fan structure.

The fan blade 300 is uniformly provided with a plurality of blades 310 along the circumferential direction thereof, the open end of each blade 310 is provided with at least one wingtip sail 320, the wingtip sails 320 located at the two end surfaces of the blades 310 are respectively provided with wingtips 321 protruding out of the blades 310, and the wingtip sails 320 on each blade are not connected with each other. In this embodiment, the geometric shape of the surface of the blades of the fan is designed to be the same as that without the wingtip, including the geometric shape of the blades, the number of the blades, the distribution of the blades, and the like, and the difference is that the wingtip is added.

Preferably, in the present embodiment, the geometrical dimensions and design requirements of the wingtip sail are:

the geometrical shape of the wing tip sail is in an arc shape when viewed from the axial direction of the fan blade, and the diameter of the outermost circle outline of the wing tip sail is the diameter of the blade tip position of the original fan blade;

the height of the wingtip sail does not exceed 1/4 of the radius length of the fan blade, and the wingtip sail can be integrally arranged on the upper part of the fan blade or distributed along the tip part of the fan blade in a half way up and down, and in the distributed state, when the height of the upper half part of the wingtip sail is lower than the radius size 1/10 of the fan blade, the height of the wingtip sail needs to be adjusted to ensure the height of the wingtip sail on the upper half part of the fan blade; the upper and lower portions of this embodiment are based on the upper and lower portions of fig. 4.

The thickness of the wingtip sail needs to be ensured to be between 0.5mm and 3 mm;

the included angle alpha formed by the inner surface of the wingtip sail and the axial direction of the wingtip sail is 0.5-3 degrees, and the design is convenient to manufacture and can ensure a certain driving force on air fluid;

the wingtip sail may be injection molded with the fan blades and requires no additional machining or post-processing.

Referring to fig. 11, in order to prevent the separation of the shield 220 from the housing 110, i.e. the falling-off and loosening of the shield, caused by the separation of the inner side of the tapered snap-in projection 221 from the retaining projection 142 during use, the applicant has further made the following improvements:

the tapered plate 220 is provided with a lock groove 222, one of the buckle inclined plates 140 is provided with an inclined plate sliding groove 143, the inclined plate sliding groove 143 is clamped and slidably assembled with one end of a lock rod 410, one end of the lock rod 410 is clamped into the lock groove 222, the other end of the lock rod 410 penetrates through the buckle inclined plate 140 and then is assembled with a pull ring 420, the part of the lock rod 410 between the pull ring 420 and the buckle inclined plate 140 is assembled with one end of a spring piece 430, the other end of the spring piece 430 is assembled with the buckle inclined plate 140 or a shell, the spring piece 430 has elasticity, and the spring piece 430 is used for applying elasticity for pushing the lock groove to the lock rod 410 so as to prevent the tapered plate 220. When the tapered plate 220 needs to be taken out, the lock rod 420 is pulled out of the lock groove only through the pull ring. In this embodiment, the spring plate is flexible, so that when the lock rod is pulled out, the spring plate can deform to absorb the corresponding displacement.

The invention is not described in detail, but is well known to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.