TWM536701U - Fan - Google Patents

Description

fan

This creation is about a fan, especially a fan that can be used to lift the wind through the drain.

Referring to FIG. 1 , a fan 9 is disclosed. The fan 9 includes a frame 91 , a fan wheel 92 , and a cover plate 93 . The fan frame 91 has an air inlet 911 and an air outlet 912 . An accommodating space 913, the air inlet 911 and the air outlet 912 are connected to the accommodating space 913. The fan wheel 92 is rotatably disposed in the accommodating space 913. One of the through holes 931 of the cover plate 93 communicates with the air inlet 911. Therefore, when the fan wheel 92 rotates in the accommodating space 913, the plurality of blades 921 of the fan wheel 92 can draw the airflow from the through hole 931 into the accommodating space 913, and drive the accommodating space. The airflow in 913 flows out toward the air outlet 912 to achieve the purpose of driving the wind.

Generally, in order to improve the air-dissipating effect of the fan 9, the side wall of the fan frame 91 has a tongue 914 protruding toward the accommodating space 913, and the tongue 914 can change the space in the accommodating space 913. The flow field further enables the airflow in the accommodating space 913 to flow through the fan wheel 92 more smoothly and smoothly to the air outlet 912.

Referring to FIG. 2, when the side wall of the fan frame 91 is provided with the tongue portion 914, the air outlet 912 is vortexed adjacent to the tongue portion 914, and the eddy current will be pulled toward the air outlet. The airflow flowing out of 912 further reduces the pressure of the airflow output by the fan 9, resulting in poor fanning effect of the fan 9.

In view of this, the present invention provides a fan to solve the fan effect of the conventional fan. Poor problem.

The purpose of the present invention is to provide a fan that can pass through the drainage member to reduce the generation of eddy currents, so that the fan has a large wind pressure, thereby enhancing the fan's wind driving effect.

In order to achieve the foregoing purpose, the fan of the present invention comprises: a frame having a side wall, the inner side of the side wall forming an accommodating space, and the side wall has at least one guide connecting the accommodating space a tuyere, the fan wheel is rotatably disposed in the accommodating space; and a drainage member connecting the side wall and adjacent to the at least one air guiding opening, the drainage member is facing the accommodating space Protruding and having a turning edge, the turning edge is divided into a drainage surface and an air outlet surface, the drainage surface faces the fan wheel, and the air outlet surface extends from the turning edge toward the at least one air guiding opening Wherein, an outer edge of the fan wheel and the side wall of the fan frame have an air flow distance, the fan wheel has an axis, and the axis extends to the outer edge of the fan wheel to have a fan a radius of the wheel, the axis extending radially to a first reference line and a second reference line, the first reference line passing through the axis and the turning edge; on the second reference line, the airflow spacing and the fan The length ratio of the wheel radius is 1 to 10, and the first reference line and the second reference line Forming a drainage angle, which angle is between 40 ° drainage to 90 °. Thereby, when the flow guiding member is located in the accommodating space, the airflow flow field in the accommodating space can be appropriately changed through the drainage member, so that the airflow in the accommodating space can pass through the blasting surface. Smooth outflow, which reduces eddy currents and increases airflow pressure, has the effect of improving the fan's ability to drive air.

Wherein, the drainage surface forms a concave curved surface. Thereby, when the fan wheel drives the airflow by the rotation, the driven airflow can flow out more smoothly through the guiding of the drainage surface, thereby reducing the eddy current and increasing the airflow pressure, and has the effect of improving the wind blowing capability of the fan.

Wherein, the outer edge of the fan wheel and the turning edge have the smallest airflow distance. Thereby, the rate of increase of the airflow spacing can be appropriately controlled, and the rate of increase of the airflow spacing is prevented from being too high or too low, so that the flow of the airflow in the airflow spacing is smoother and the air blowing capability is improved. Effect.

The ratio of the length of the airflow to the radius of the fan wheel is 2 to 45 on the first reference line. Thereby, the increase rate of the airflow spacing can be appropriately controlled, and the rate of increase of the airflow spacing is prevented from being too high or too low, so that the flow of the airflow in the airflow spacing is smoother, and the effect of improving the air blowing capability is enhanced.

Wherein, the drainage member is integrally combined with one of the side walls. Thereby, when the flow guiding member is located in the accommodating space, the airflow flow field in the accommodating space can be appropriately changed through the drainage member, so that the airflow in the accommodating space can pass through the blasting surface. Smooth outflow, which reduces eddy currents and increases airflow pressure, has the effect of improving the fan's ability to drive air.

Wherein, the wind surface forms a convex curved surface. Thereby, when the fan wheel drives the airflow by the rotation, the airflow in the accommodating space can flow out more smoothly through the air outlet surface, thereby reducing the eddy current and increasing the airflow pressure, and has the effect of improving the wind absorbing capability of the fan. .

Wherein, the drainage member is a bent piece integrally combined with the side wall. Thereby, when the flow guiding member is located in the accommodating space, the airflow flow field in the accommodating space can be appropriately changed through the drainage member, so that the airflow in the accommodating space can pass through the blasting surface. Smooth outflow, which reduces eddy currents and increases airflow pressure, has the effect of improving the fan's ability to drive air.

Wherein, the wind surface forms a plane. Thereby, when the fan wheel drives the airflow by the rotation, the airflow in the accommodating space can flow out more smoothly through the air outlet surface, thereby reducing the eddy current and increasing the airflow pressure, and has the effect of improving the wind absorbing capability of the fan. .

The deflector has the turning edge, a first bonding edge, a second bonding edge, a first side and a second side, and the turning edge, the first bonding edge and the second bonding edge are respectively The first side extends to the second side, and the drainage surface is formed between the turning edge and the first bonding edge, and the wind forming surface is formed between the turning edge and the second bonding edge, the first bonding edge And forming a joint surface between the second joint edge, the joint surface is coupled to the inner side wall of the side wall of the fan frame, and the wind exit surface extends from the turning edge toward the at least one air guiding port to the second joint edge . Thereby, when When the flow guiding member is located in the accommodating space, the airflow flow field in the accommodating space can be appropriately changed through the flow guiding member, so that the airflow in the accommodating space can flow out smoothly through the blasting surface, and further Reducing eddy currents and increasing airflow pressure have the effect of increasing the fan's ability to drive air.

The inner side wall of the side wall adjacent to the at least one air guiding opening has a protruding tongue portion, and the bonding surface is coupled to the tongue portion. Thereby, when the bonding surface is tightly coupled to the tongue portion of the side wall, the airflow flow field in the accommodating space can be appropriately changed through the drainage member, so that the airflow in the accommodating space can pass through the outlet The wind surface flows out more smoothly, thereby reducing the eddy current and increasing the pressure of the air flow, and has the effect of improving the wind driving ability of the fan.

The tongue protrudes toward the accommodating space and forms a convex curved surface, and the bonding surface forms a concave curved surface, and the concave curved surface formed by the bonding surface has a corresponding curvature with the convex curved surface of the tongue. Thereby, when the bonding surface is tightly coupled to the tongue portion of the side wall, the airflow flow field in the accommodating space can be appropriately changed through the drainage member, so that the airflow in the accommodating space can pass through the outlet The wind surface flows out more smoothly, thereby reducing the eddy current and increasing the pressure of the air flow, and has the effect of improving the wind driving ability of the fan.

Wherein, the wind surface forms a plane. Thereby, when the fan wheel drives the airflow by the rotation, the airflow in the accommodating space can flow out more smoothly through the air outlet surface, thereby reducing the eddy current and increasing the airflow pressure, and has the effect of improving the wind absorbing capability of the fan. .

Wherein, the drainage member is a wedge-shaped block integrally combined with the side wall. Thereby, when the flow guiding member is located in the accommodating space, the airflow flow field in the accommodating space can be appropriately changed through the drainage member, so that the airflow in the accommodating space can pass through the blasting surface. Smooth outflow, which reduces eddy currents and increases airflow pressure, has the effect of improving the fan's ability to drive air.

[this creation]

1‧‧‧Fan frame

11‧‧‧Base

111‧‧‧Axis joint

12‧‧‧ Side wall

121‧‧‧ accommodating space

122‧‧‧air inlet

123‧‧‧air outlet

124‧‧ ‧Tongue

2‧‧‧fan wheel

21‧‧·wheels

211‧‧‧Axis

22‧‧‧ blades

3‧‧‧Drainage

31‧‧‧ turning edge

32‧‧‧ first joint side

33‧‧‧second joint side

34‧‧‧ first side

35‧‧‧ second side

3a‧‧‧ drainage surface

3b‧‧‧Out of the wind

3c‧‧‧ joint surface

4‧‧‧ Cover

41‧‧‧Perforation

C1‧‧‧ first curve

C2‧‧‧second curve

D1‧‧‧ airflow spacing

D2‧‧‧fan wheel radius

L1‧‧‧ first reference line

L2‧‧‧ second reference line

Θ‧‧‧ drainage angle

[study]

9‧‧‧fan

91‧‧‧Fan frame

911‧‧‧ inlet

912‧‧ vents

913‧‧‧ accommodating space

914‧‧ ‧Tongue

92‧‧‧fan wheel

921‧‧‧ leaves

93‧‧‧ Cover

931‧‧‧Perforation

Figure 1: An exploded view of a conventional fan.

Figure 2: Schematic diagram of the flow of a conventional fan.

Fig. 3 is an exploded perspective view showing the fan of the first embodiment of the present invention.

Fig. 4 is an exploded perspective view showing the fan of the second embodiment of the present invention.

Fig. 5 is an exploded perspective view showing the fan of the third embodiment of the present invention.

Fig. 6 is a structural view of a drain member of a third embodiment of the present invention.

Fig. 7 is a flow chart showing the flow of a fan of the third embodiment of the present invention.

Fig. 8 is an exploded perspective view showing the fan of the fourth embodiment of the present invention.

Figure 9 is a schematic view showing the angle of drainage of the fan of the fourth embodiment of the present invention.

Figure 10: Fan running test curve.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The fan of the first embodiment of the present invention comprises a frame 1, a fan wheel 2 and a drainage member 3. The fan wheel 2 is rotatably disposed in the fan frame 1 , and the drain member 3 is located in the fan frame 1 .

The fan frame 1 includes a base 11 and a side wall 12. The base 11 is provided with a shaft joint portion 111. The side wall 12 is coupled to the base portion 11. The inner side wall 12 defines an accommodating space 121, and the side wall 12 has at least one air guiding port that communicates with the accommodating space 121. In the first embodiment, the at least one air guiding port includes an air inlet 122 and an air outlet 123.

The fan wheel 2 is rotatably disposed in the accommodating space 121 of the fan frame 1. The fan wheel 2 includes a hub 21 and a plurality of blades 22. The hub 21 rotatably couples the shaft portion 111 of the base 11 , and the blades 22 are disposed on the outer circumferential surface of the hub 21 .

The flow guiding member 3 is connected to the side wall 12 and adjacent to the at least one air guiding opening. The flow guiding member 3 protrudes toward the accommodating space 121 and has a turning edge 31. The turning edge 31 divides the drainage member 3 into one. The drainage surface 3a and an air outlet surface 3b extend from the turning edge 31 toward the at least one air guiding opening (the air outlet 123). Thereby, when the drainage member 3 is located in the accommodation In the space 121, the airflow flow field in the accommodating space 121 can be appropriately changed through the flow guiding member 3, so that the airflow in the accommodating space 121 can more smoothly pass through the air outlet surface 3b toward the air outlet. The outflow of 123, thereby reducing the eddy current at the air outlet 123 and increasing the pressure of the airflow, has the effect of improving the air blowing capability of the fan.

In the first embodiment of the present invention, the flow guiding member 3 is integrally joined to one of the side walls 12, and the drainage surface 3a of the drainage member 3 has a corresponding bending direction with the air outlet surface 3b, for example, The drainage surface 3a forms a concave curved surface, and the windward surface 3b correspondingly forms a convex curved surface, and the drainage surface 3a faces the plurality of blades 22 of the fan wheel 2. Therefore, when the plurality of blades 22 of the fan wheel 2 drive the airflow by the rotation, the driven airflow can smoothly flow toward the air outlet 123 through the guiding of the drainage surface 3a, thereby reducing the air outlet 123. The eddy current and the pressure of the air flow have the effect of improving the wind driving ability of the fan.

The fan of the present invention can further have a cover 4 which is coupled to the side wall 12 of the frame 1, and the cover 4 has a through hole 41 which communicates with the air inlet 122. The cover plate 4 can be used to partially close the accommodating space 121 of the fan frame 1 and allow the airflow to enter the accommodating space 121 through the through hole 41 and the air inlet 122 to provide a pressurization function. Increasing the pressure of the airflow at the air outlet 123 has the effect of improving the air blowing capability of the fan.

Referring to FIG. 4, which is the second embodiment of the present invention, the second embodiment of the present invention has the same fan frame 1, the fan wheel 2 and the cover plate 4, wherein the first The difference between the second embodiment and the first embodiment lies only in the configuration of the flow guiding member 3, and only the drainage member 3 will be discussed in detail below.

In the second embodiment of the present invention, the flow guiding member 3 is integrally coupled with a bent piece of the side wall 12, and the drainage surface 3a forms a concave curved surface, and the drainage surface 3a faces the fan wheel 2 Several blades 22. Therefore, when the plurality of blades 22 of the fan wheel 2 drive the airflow by the rotation, the driven airflow can smoothly flow toward the air outlet 123 through the guiding of the drainage surface 3a, thereby reducing the air outlet 123. Eddy current and increase air pressure, with lifting fan The effect of the ability to drive wind.

Moreover, when the flow guide 3 is the bent piece, the air outlet surface 3b forms a plane, and the air outlet surface 3b faces the air outlet 123. Therefore, when the plurality of blades 22 of the fan wheel 2 drive the airflow due to the rotation, the airflow in the accommodating space 121 can flow more smoothly toward the air outlet 123 via the air outlet surface 3b, thereby reducing the airflow. The vortex at the tuyere 123 and the pressure of the airflow increase the effect of the fan's ability to drive the wind.

Referring to FIG. 5, which is the third embodiment of the present creation, the third embodiment of the present invention has the same fan frame 1, the fan wheel 2 and the cover plate 4, wherein the The difference between the third embodiment and the first embodiment lies only in the configuration of the flow guiding member 3, and only the drainage member 3 will be discussed in detail below.

Referring to the fifth and sixth embodiments, in the third embodiment of the present invention, the flow guiding member 3 is a wedge block, and the drainage member 3 has the turning edge 31, a first bonding edge 32, and a second combination. The side 33, the first side 34 and the second side 35, the turning edge 31, the first bonding edge 32 and the second bonding edge 33 respectively extend from the first side 34 to the second side 35, the turning The drainage surface 3a is formed between the edge 31 and the first joint edge 32. The windward surface 3b is formed between the turning edge 31 and the second joint edge 33. The first joint edge 32 and the second joint A joint surface 3c is formed between the edges 33, and the joint surface 3c is coupled to the inner side wall of the side wall 12 of the fan frame 1. The wind exit surface 3b is directed from the turning edge 31 toward the at least one air guiding opening (the air outlet 123) ) extends to the second bonding edge 33. Therefore, when the flow guiding member 3 is located in the accommodating space 121, the airflow flow field in the accommodating space 121 can be appropriately changed through the flow guiding member 3, so that the airflow in the accommodating space 121 can pass through the airflow. The air outlet surface 3b smoothly flows out toward the air outlet 123, thereby reducing the eddy current at the air outlet 123 and increasing the airflow pressure, and has the effect of improving the air blowing capability of the fan.

Please refer to FIG. 5 to FIG. 7 simultaneously, wherein the drainage surface 3a forms a concave curved surface, and the drainage surface 3a faces the plurality of blades 22 of the fan wheel 2. Thereby, when the plurality of blades 22 of the fan wheel 2 drive the airflow due to the rotation, the driven airflow can pass through the drainage surface. The guiding of 3a smoothly flows out toward the air outlet 123, thereby reducing the eddy current at the air outlet 123 and increasing the pressure of the airflow, which has the effect of improving the air blowing capability of the fan.

Further, the air outlet surface 3b forms a plane, and the air outlet surface 3b faces the air outlet 123. Therefore, when the plurality of blades 22 of the fan wheel 2 drive the airflow due to the rotation, the airflow in the accommodating space 121 can flow more smoothly toward the air outlet 123 via the air outlet surface 3b, thereby reducing the airflow. The vortex at the tuyere 123 and the pressure of the airflow increase the effect of the fan's ability to drive the wind.

Moreover, when the inner side wall of the side wall 12 adjacent to the at least one air guiding opening (the air outlet opening 123) has a tongue portion 124, the tongue portion 124 protrudes toward the accommodating space 121 and has a convex curved surface. The bonding surface 3c is coupled to the tongue portion 124. The bonding surface 3c preferably forms a concave curved surface, and the concave curved surface formed by the bonding surface 3c has a corresponding curvature with the convex curved surface of the tongue portion 124. Therefore, when the bonding surface 3c is tightly coupled to the tongue portion 124 of the side wall 12, the airflow flow field in the accommodating space 121 can be appropriately changed through the draining member 3, so that the accommodating space 121 is inside. The airflow can flow more smoothly toward the air outlet 123 via the air outlet surface 3b, thereby reducing the eddy current at the air outlet 123 and increasing the airflow pressure, and has the effect of improving the air blowing capability of the fan.

Referring to FIG. 8 , which is the fourth embodiment of the present creation, the fourth embodiment of the present invention has the same frame 1 , the fan wheel 2 and the cover 4 as the third embodiment, wherein In the third embodiment, the flow guiding member 3 is a wedge-shaped block that can be coupled to the side wall 12 of the fan frame 1. In the fourth embodiment, the drainage member 3 is a wedge-shaped block integrally joining the side wall 12. . In addition, the fourth embodiment has similar structure and efficacy to the drainage member 3 of the third embodiment, and related structures and effects have been described above, and details are not described herein again.

In order to describe the arrangement of the flow guide 3 of the present invention, the following is exemplified by the fourth embodiment of the present invention. In particular, the following description is equally applicable to the first to third embodiments of the present invention.

As shown in FIG. 9 , an airflow distance D1 between the outer edge of one of the fan wheels 2 and the inner side wall of the side wall 12 may be a non-uniform value, for example, in various embodiments of the present invention. The outer edge of the fan wheel 2 and the turning edge 31 have the smallest airflow distance D1, and the airflow distance D1 surrounds the outer edge of the fan wheel 2 in a circumferential direction (clockwise direction). gradually increase.

Moreover, the hub 21 of the fan wheel 2 has a shaft center 211 extending to the outer end edge of the fan wheel 2 having a fan radius D2, and the shaft center 211 is radially extended by a first reference. a line L1 and a second reference line L2. The first reference line L1 passes through the axis 211 and the turning edge 31. On the first reference line L1, the airflow distance D1 is proportional to the length of the fan wheel radius D2. In the second reference line L2, the ratio of the length of the airflow D1 to the length of the fan wheel D2 is 1:10, and the first reference line L1 and the first A drainage angle θ is formed between the two reference lines L2, and the drainage angle θ is between 40° and 90°. By planning the angle value of the drainage angle θ, the increase rate of the airflow distance D1 can be appropriately controlled to avoid the increase or decrease of the airflow distance D1, so that the flow of the airflow in the airflow distance D1 is smoother. It has the effect of improving the ability to drive wind.

In order to prove that the creation does have the effect of improving the driving ability, the following is a running test of the fan of the third embodiment of the present invention and a conventional fan. In the running test, the conventional fan only has the third implementation with the creation. For example, the fan frame is the same as the fan frame 1, the fan wheel 2, and the cover plate 4. The conventional fan does not have the flow guiding member 3; in addition, the draft angle θ of the fan of the present invention is set to 45°. Please refer to Figure 10, the horizontal coordinate of the test result is a wind volume (unit: CFM), and the ordinate is a wind pressure (unit: mmAq). The running test result of the fan of this creation is expressed as a first curve. C1, the running test result of the conventional fan is expressed as a second curve C2. It can be seen from the tenth figure that the fan of the present invention can have a large wind pressure and has the effect of improving the wind blowing capability under the same air volume.

In summary, the fan of the present invention can moderately change the volume through the drain member 3. The airflow flow field in the space 121 allows the airflow in the accommodating space 121 to flow more smoothly toward the air outlet 123, thereby reducing the eddy current at the air outlet 123 and increasing the airflow pressure, and has the ability to enhance the wind of the fan. Effect.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and it is still within the spirit and scope of the present invention to make various changes and modifications to the above embodiments. The technical scope of protection, therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached.

1‧‧‧Fan frame

11‧‧‧Base

111‧‧‧Axis joint

12‧‧‧ Side wall

121‧‧‧ accommodating space

122‧‧‧air inlet

123‧‧‧air outlet

2‧‧‧fan wheel

21‧‧·wheels

22‧‧‧ blades

3‧‧‧Drainage

31‧‧‧ turning edge

3a‧‧‧ drainage surface

3b‧‧‧Out of the wind

4‧‧‧ Cover

41‧‧‧Perforation

Claims (13)

A fan includes: a fan frame having a side wall, the inner side of the side wall forming an accommodating space, and the side wall has at least one air guiding port connecting the accommodating space; a fan wheel, the fan The rotator is rotatably disposed in the accommodating space; and a drainage member is connected to the side wall and adjacent to the at least one air guiding opening, and the drainage member protrudes toward the accommodating space and has a turning edge. The turning edge divides the drainage member into a drainage surface and an air outlet surface, the drainage surface faces the fan wheel, and the air outlet surface extends from the turning edge toward the at least one air guiding port; wherein one of the fan wheels An outer air gap and the side wall of the fan frame have an air flow distance, the fan wheel has an axial center, and the axial center extends to the outer end edge of the fan wheel to have a fan radius, the axial diameter Extending a first reference line and a second reference line, the first reference line passes through the axis and the turning edge; on the second reference line, the ratio of the airflow spacing to the length of the fan wheel is 1 ratio 10, and a drainage angle is formed between the first reference line and the second reference line, the drainage The angle is between 40 ° to 90 °. The fan of claim 1, wherein the drainage surface forms a concave curved surface. The fan of claim 1, wherein the outer edge of the fan wheel and the turning edge have a minimum spacing of the airflow. The fan of claim 1, wherein the ratio of the airflow spacing to the length of the fan wheel is 2 to 45 on the first reference line. The fan of claim 1, wherein the flow guiding member is integrally joined to one of the side walls. The fan of claim 5, wherein the wind surface forms a convex curved surface. The fan of claim 1, wherein the flow guiding member is integrally bent with one of the side walls. The fan of claim 7, wherein the wind surface forms a plane. The fan of claim 1, wherein the flow guiding member has the turning edge, a first bonding edge, a second bonding edge, a first side and a second side, the turning edge, the first The bonding edge and the second bonding edge respectively extend from the first side to the second side, and the drainage surface and the first bonding edge form the drainage surface, and the turning edge and the second bonding edge are Forming the air outlet surface, the first joint edge and the second joint edge form a joint surface, the joint surface is combined with the inner side wall of the side wall of the fan frame, the wind exit surface is facing the turn edge At least one air guiding opening extends to the second bonding edge. The fan of claim 9, wherein the side wall is adjacent to the inner side wall of the at least one air guiding opening and has a protruding tongue, the engaging surface is coupled to the tongue. The fan of claim 10, wherein the tongue protrudes toward the accommodating space and forms a convex curved surface, the bonding surface forms a concave curved surface, and the concave curved surface formed by the bonding surface The convex curved surface of the tongue has a corresponding curvature. The fan of claim 9, wherein the wind surface forms a plane. The fan of claim 1, wherein the flow guiding member is a wedge-shaped block integrally coupled to the side wall.