Fan module and fan

Abstract

The utility model relates to the technical field of fans, in particular to a fan module and a fan. The fan module comprises an air driving piece, a first air duct and a second air duct. The second air cylinder is installed at one end of the first air cylinder, and the first air cylinder and the second air cylinder are communicated in the axial direction. The air driving piece is installed in the first air duct and comprises a plurality of fan blades distributed on the radial plane of the first air duct at intervals, and the fan blades drive airflow to flow from the first air duct to the second air duct; a plurality of first wind cutting pieces are arranged in the first wind barrel and between the wind driving piece and the second wind barrel, and the first wind cutting pieces are arranged around the axis of the first wind barrel at intervals so as to form a plurality of first rectification channels in a spaced mode. A plurality of second air cutting sheets are arranged in the second air duct at intervals around the axis of the second air duct, and a plurality of second rectification channels are formed by the plurality of second air cutting sheets at intervals; the first wind cutting pieces are arranged in an arc-shaped bending mode in the circumferential direction of the first wind cylinder, and the second wind cutting pieces are arranged in an arc-shaped bending mode in the circumferential direction of the second wind cylinder.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, especially a fan module and fan. BACKGROUND

[0002] Handheld fans and other small fans provide a convenient cooling method for people in hot summer due to their portability and practicality. Small fans are small in size and light in weight, which are convenient for users to carry around and can provide coolness at any time whether in outdoor activities, travel or at home. Small fans are not only suitable for personal use, but also suitable for use in offices, classrooms, dormitories and other occasions, providing coolness for environments without air conditioning.

[0003] Small fans generate airflow through fan modules. The current fan modules improve the air outlet speed by adding an air outlet cover structure, making the blowing wind power more concentrated and the wind speed larger, but also leading to a larger noise problem. SUMMARY

[0004] The utility model embodiment provides a kind of fan module and fan, to solve the problem of larger noise in fan module in prior art.

[0005] The utility model discloses a fan module, including driving wind piece, first wind cylinder and second wind cylinder;Second wind cylinder is installed on one end of first wind cylinder, first wind cylinder and second wind cylinder are all in axial direction through;Driving wind piece is installed in first wind cylinder, and driving wind piece includes a plurality of fan leaves that are spaced apart on the diameter surface of first wind cylinder, and the fan leaf drives airflow to flow from first wind cylinder to second wind cylinder;

[0006] In first wind cylinder, a plurality of first wind cutting pieces are arranged between driving wind piece and second wind cylinder, and a plurality of first wind cutting pieces are spaced apart to form a plurality of first rectification channels around the axis of first wind cylinder;A plurality of second wind cutting pieces are spaced apart to form a plurality of second rectification channels around the axis of second wind cylinder in second wind cylinder.

[0007] The first wind cutting piece is arranged in an arc shape in the circumferential direction of the first wind cylinder, and the second wind cutting piece is arranged in an arc shape in the circumferential direction of the second wind cylinder;And the bending direction of the first wind cutting piece is opposite to the bending direction of the second wind cutting piece.

[0008] Optionally, a second connecting base is arranged in the second wind cylinder;The axis of the second connecting base coincides with the axis of the second wind cylinder;One end of a plurality of second wind cutting pieces is connected to the second connecting base, and the other end is connected to the inner wall of the second wind cylinder;The side of the second wind cutting piece away from the first wind cylinder is recessed towards the first wind cylinder.

[0009] Optionally, the top surface of the second connecting base is lower than the height of the side of the second air duct away from the first air duct.

[0010] Optionally, a first concave cavity is formed in the second connecting base and is open on the side close to the first air duct.

[0011] Optionally, a first connecting base is arranged in the first air duct, one end of the plurality of first air cutting pieces is connected with the first connecting base, and the other end is connected with the inner wall of the first air duct; and the first concave cavity is arranged in connection with the first connecting base.

[0012] Optionally, there is no gap between the second air cutting piece and the first air cutting piece in the projection of the first air duct and the second air duct in the radial direction.

[0013] Optionally, one of the first air duct and the second air duct is provided with a fitting groove around the side facing the other one, and the other one is provided with a fitting edge around the side facing the one; the fitting edge is fitted in the fitting groove.

[0014] Optionally, one end of the plurality of first air cutting pieces close to the inner wall of the first air duct is arranged to be inclined in the clockwise or counterclockwise direction; and the inclination direction of the plurality of fan blades is opposite to the inclination direction of the first air cutting piece.

[0015] Optionally, the first air cutting piece is arranged to be inclined in the axial direction of the first air duct; and the plurality of fan blades are arranged to be curved in an arc shape.

[0016] The utility model discloses still a kind of fan, including fan module as above.

[0017] Compared with prior art, the fan module provided in the embodiments of the utility model has the beneficial effects that: the first air cutting piece is arranged to be curved in an arc shape in the circumferential direction of the first air duct, the second air cutting piece is arranged to be curved in an arc shape in the circumferential direction of the second air duct, and the bending direction of the first air cutting piece is opposite to the bending direction of the second air cutting piece; the first air cutting piece and the second air cutting piece curved in reverse arc shape can more effectively guide and straighten airflow passing through the first air duct and the second air duct in different directions, so that airflow is more orderly and concentrated, while increasing air supply range and improving air supply comfort; arc-shaped bending arrangement can make airflow more gentle, reduce turbulence and vortex of airflow inside the second air duct, thereby reducing noise and improving transmission efficiency of wind power, and also improving wind power. BRIEF DESCRIPTION OF DRAWINGS

[0018] The technical solutions of the utility model will be described in further detail below with reference to the drawings and embodiments, and in the drawings:

[0019] Figure 1 is a schematic diagram of the fan module of the embodiment of the utility model;

[0020] Figure 2 is another schematic diagram of the fan module of the embodiment of the utility model;

[0021] Figure 3 is an exploded schematic diagram of the fan module of the embodiment of the utility model;

[0022] Figure 4 is another exploded schematic diagram of the fan module of the embodiment of the utility model;

[0023] Figure 5 is another schematic diagram of the first air cylinder and the air driving piece of the embodiment of the utility model;

[0024] Figure 6 is a schematic diagram of the first air cylinder of the embodiment of the utility model;

[0025] Figure 7 is another schematic diagram of the first air cylinder of the embodiment of the utility model;

[0026] Figure 8 is another schematic diagram of the first air cylinder of the embodiment of the utility model;

[0027] Figure 9 is a schematic diagram of the second air cylinder of the embodiment of the utility model;

[0028] Figure 10 is another schematic diagram of the second air cylinder of the embodiment of the utility model;

[0029] Figure 11 is another schematic diagram of the second air cylinder of the embodiment of the utility model.

[0030] The reference signs in the drawings are as follows:

[0031] 1, air driving piece; 11, fan blade seat; 111, fan blade; 12, motor set; 13, circuit board; 2, first air cylinder; 21, first air cutting piece; 22, first rectification channel; 23, first connecting base; 24, fitting edge; 23, second air cylinder; 3, second air cylinder; 31, second air cutting piece; 32, second rectification channel; 33, second connecting base; 331, first concave cavity; 34, fitting groove; 4, rear cover; 41, air cutting strip. DETAILED DESCRIPTION

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The preferred embodiments of the utility model will be described in detail in combination with the drawings.

[0033] The utility model embodiment provides a fan module, likeFigures 1 to 6 As shown, the fan module comprises a fan driving element 1, a first air duct 2 and a second air duct 3; the second air duct 3 is mounted on one end of the first air duct 2, and both the first air duct 2 and the second air duct 3 are penetrated in the axial direction; the fan driving element 1 is mounted in the first air duct 2, and the fan driving element 1 comprises a plurality of fan blades 111 which are distributed in the radial direction of the first air duct 2 and drive the airflow to flow from the first air duct 2 to the second air duct 3.

[0034] In the first air duct 2, a plurality of first air cutting pieces 21 are arranged between the fan driving element 1 and the second air duct 3, and the plurality of first air cutting pieces 21 are arranged in the axial direction of the first air duct 2 to form a plurality of first air flow channels 22; a plurality of second air cutting pieces 31 are arranged in the axial direction of the second air duct 3 in the second air duct 3, and the plurality of second air cutting pieces 31 form a plurality of second air flow channels 32. The first air cutting piece 21 is arranged in an arc shape in the circumferential direction of the first air duct 2, the second air cutting piece 31 is arranged in an arc shape in the circumferential direction of the second air duct 323, and the bending direction of the first air cutting piece 21 is opposite to the bending direction of the second air cutting piece 31.

[0035] The first air cutting piece 21 of the utility model is arranged in an arc shape in the circumferential direction of the first air duct 2, the second air cutting piece 31 is arranged in an arc shape in the circumferential direction of the second air duct 3, and the bending direction of the first air cutting piece is opposite to the bending direction of the second air cutting piece, the first air cutting piece 21 and the second air cutting piece 31 which are bent in opposite directions can more effectively guide and rectify the airflow passing through the first air duct 2 and the second air duct 3 in different directions, so that the airflow is more orderly and concentrated, the air supply range is increased, the air supply comfort is improved, the airflow is softer due to the arc bending arrangement, the turbulence and vortex of the airflow in the second air duct 3 are reduced, the noise is reduced and the transmission efficiency of the wind power is improved, and the wind power is also improved.

[0036] Specifically, the fan module further comprises the first air duct 2 and the second air duct 3. The first air duct 2 is provided with the first air cutting piece 21, which can preliminarily rectify the airflow generated by the fan blade 111, that is, the airflow generated by the fan blade 111 is in a disordered and scattered state, and is cut and divided into a plurality of relatively concentrated and orderly airflows after being blown to the first air flow channel 22 formed by the plurality of first air cutting pieces 21. Further, the second air duct 3 is provided with the second air cutting piece 31, and the airflow passing through the first air flow channel 22 enters the second air flow channel 32 again, and the airflow is cut and divided again, so that the airflow is more concentrated and orderly. The first air flow channel 22 and the second air flow channel 32 can provide a sufficient flow distance for the airflow, and on this basis, the airflow is more concentrated and the wind power is stronger after being rectified twice, so that a more cool use experience can be provided for the user.

[0037] Further combined Figures 7 to 10As shown, the plurality of first air cutting pieces 21 are arranged to be inclined in the clockwise or counterclockwise direction near one end of the inner wall of the first air cylinder 2; the inclination direction of the plurality of fan blades 111 is opposite to that of the first air cutting piece 21. The inclination direction of the fan blades 111 is opposite to that of the first air cutting piece 21, so that when the fan blades 111 rotate, more air flow can be driven into the first rectification channel 22. Specifically, the inclination of the first air cutting piece 21 in one direction can guide the air flow to blow out at a specific angle, and the inclination direction of the fan blades 111 opposite to that of the first air cutting piece 21 can further adjust the direction of the air flow, making it more concentrated and directional. The air flow generated by the fan blades 111 is cut and redirected when passing through the first air cutting piece 21 due to the inclination of the first air cutting piece 21. This design can enhance the air flow rectification effect, making the air flow more orderly. By controlling the inclination direction of the fan blades 111 and the first air cutting piece 21, the turbulence and vortex of the air flow inside the first air cylinder 2 can be reduced, thereby reducing noise and improving the transmission efficiency of the wind power.

[0038] More specifically, in one embodiment, the first air cutting piece 21 is arranged to be inclined in the counterclockwise direction, and the fan blade 111 is arranged to be inclined in the clockwise direction, based on the side where the second air cylinder 3 is located.

[0039] Further, the first air cutting piece 21 is arranged to be inclined in the axial direction of the first air cylinder 2, i.e. the upper and lower sides of the first air cutting piece 21 are staggered, which can guide the air flow and guide the air flow more quickly and more concentratedly to the second air cylinder 33. The plurality of fan blades 111 are arranged in an arc shape. The axial inclination of the first air cutting piece 21 can guide the air flow to flow in a specific direction, enhance the directional nature of the air flow, make the wind power more concentrated, and reduce the lateral loss. The arc-shaped design of the fan blades 111 can increase the area of the fan blades 111 in contact with the air, thereby generating greater wind power at the same speed and improving the efficiency of the fan. The arc-shaped fan blades 111 can more effectively push the air flow, and in combination with the inclined first air cutting piece 21, the air flow can be further rectified, reducing turbulence and vortex of the air flow, and reducing noise. The design of the arc-shaped fan blades 111 and the inclined first air cutting piece 21 helps to reduce the turbulence and vortex of the air flow formed inside the first air cylinder 2, which helps to reduce energy loss and improve the transmission efficiency of the wind power. At the same time, the arc-shaped fan blades 111 can more evenly distribute the wind power, and the inclined first air cutting piece 21 can further adjust the direction of the air flow, making the wind power more uniform when output.

[0040] Specifically, as shown in FIG. 6, the first air cutting piece 21 is arranged to be inclined in the counterclockwise direction, and the fan blade 111 is arranged to be inclined in the clockwise direction, based on the side where the second air cylinder 3 is located. Figure 3As shown, the air driving member 1 comprises a motor set 12 and a fan blade seat 11, the motor set 12 is installed in the first air cylinder 2, the fan blade seat 11 is sleeved on the motor set 12, and the fan blades 111 are arranged at intervals on the peripheral wall of the fan blade seat 11. The motor set 12 is installed in the first air cylinder 2, and the fan blade seat 11 is sleeved on the motor set 12. This structure design makes the whole air driving member 1 more compact, saves space, and is convenient for installation and maintenance. The motor set 12 directly drives the fan blade seat 11, reduces the transmission link, improves the force transmission efficiency, and thus improves the overall efficiency of the fan module. The fan blades 111 are arranged at intervals on the peripheral wall of the fan blade seat 11, which can ensure uniform distribution and uniform flow of air flow, reduce mutual interference of air flow between the fan blades 111, and improve the output efficiency of wind power. The motor set 12 generally comprises a stator and a rotor, the fan blade seat 11 is sleeved on the rotor, the rotor rotates to drive the fan blade seat 11 to rotate, and the specific arrangement of the motor set 12 can be achieved by using conventional technology, which will not be described here.

[0041] Further, as shown in Figures 9 to 11 The second air cylinder 3 is provided with a second connecting base 33; the axis of the second connecting base 33 coincides with the axis of the second air cylinder 3; one end of the plurality of second air cutting pieces 31 is connected with the second connecting base 33, and the other end is connected with the inner wall of the second air cylinder 3; the side of the second air cutting piece 31 away from the first air cylinder 2 is recessed towards the first air cylinder 2. The axis of the second connecting base 33 coincides with the axis of the second air cylinder 3, which can ensure the stable installation of the second air cutting piece 31 and reduce vibration and noise caused by improper installation. The side of the second air cutting piece 31 away from the first air cylinder 2 is recessed towards the first air cylinder 2, which can concentrate air flow and make wind power concentrate in the axial direction, thereby improving the output efficiency of wind power.

[0042] The second air cutting piece 31 is connected with the second connecting base 33 and the inner wall of the second air cylinder 3 at both ends to limit a plurality of second air flow channels 32. The second connecting base 33 can be in a cylindrical shape, which can reduce wind resistance and make the distance from the side wall of the second connecting base 33 to the inner wall of the second air cylinder 3 equal.

[0043] The height of the top surface of the second connecting base 33 is lower than the height of the side of the second air cylinder 3 away from the first air cylinder 2. The height of the top surface of the second connecting base 33 is lower than the side of the second air cylinder 3, which helps to form a complete air flow outlet surface on the air outlet surface of the second air cylinder 3, so that the air flow covers the entire air outlet surface before blowing out of the second air cylinder 3, avoiding the problem of insufficient wind power in the middle area of the air outlet surface due to the blockage of the second connecting base 33, and making the wind volume distribution more uniform in the entire blowing area.

[0044] The second connecting base 33 is provided with a first concave cavity 331 which is open at the side close to the first air duct 2. The first concave cavity 331 is provided on the second connecting base 33 to reduce the weight of the second air duct 3. Specifically, the first concave cavity 331 is a cylindrical concave cavity, and the second connecting base 33 is in a cylindrical shape as a whole. The first concave cavity 331 is arranged in connection with the first connecting base 33, so as to seal the first concave cavity 331 to a certain extent, avoid the air flow from flowing into the first concave cavity 331 when flowing to the second air duct 3, cause the disorder of the air flow, affect the orderly flow of the air flow, and increase the noise.

[0045] Further, there is no gap between the second air baffle 31 and the first air baffle 21 in the projection of the first air duct 2 and the second air duct 3 in the radial direction. In the projection of the first air duct 2 and the second air duct 3 in the radial direction, there is no gap between the second air baffle 31 and the first air baffle 21, so that the air flow directly enters the second air flow channel 32 after flowing out of the first air flow channel 22, avoiding the disturbance of the air flow at the gap and ensuring the orderly and stable air flow.

[0046] The first air duct 2 is provided with a first connecting base 23; the axis of the first connecting base 23 coincides with the axis of the first air duct 2; one end of the plurality of first air baffles 21 is connected with the first connecting base 23, and the other end is connected with the inner wall of the first air duct 2; and the motor set 12 is installed on the side of the first connecting base 23 away from the second air duct 3. The first connecting base 23 can facilitate the connection of the first air baffles 21.

[0047] Further, the air expelling member 1 comprises a connecting wire (not shown), and the side edge of the first air duct 2 facing the second air duct 3 or the side edge of the second air duct 3 facing the first air duct 2 is provided with a wire passing groove (not shown). The connecting wire passes through the first air flow channel 22 from the side of the first air baffle 21 away from the second air duct 3, and is led out of the first air duct 2 and the second air duct 3 through the wire passing groove. Through the wire passing groove and the original first air flow channel 22, the connecting wire can be conveniently led out of the first air duct 2 and the second air duct 3. Specifically, the connecting wire is electrically connected with the circuit board 13 of the motor set 12, and the stator of the motor set 12 is electrically connected with the circuit board 13. After the connecting wire is led out, it is further electrically connected with the main circuit board 13, and the details are not described herein.

[0048] Further, as shown in FIG. 1, Figure 9 and Figure 11As shown, one of the first air duct 2 and the second air duct 3 is provided with a fitting groove 34 along one side edge thereof, and the other is provided with a fitting edge 24 along one side edge thereof. The fitting edge 24 is fitted in the fitting groove 34. By fitting the groove 231 and the fitting edge 24, the assembly convenience and the installation stability between the first air duct 2 and the second air duct 3 can be improved. The first air duct 2 and the second air duct 3 can be further bonded by glue.

[0049] Further, the fan module further comprises a rear cover 4, the rear cover 4 is provided with a plurality of spaced wind cutting strips 41, and the rear cover 4 covers one side of the first air duct 2 away from the second air duct 3. The wind cutting strips 41 on the rear cover 4 can preliminarily straighten the airflow flowing into the first air duct 2, so that the airflow is more orderly, reduces the disorder of the airflow before entering the fan blade 111, improves the transmission efficiency of the wind power, reduces the noise generated by the airflow disorder, and provides a quieter use experience.

[0050] The utility model discloses still a kind of fan, including the fan module as above. Fan has the fan module described above, and it also has the same technical effect as the fan module described above, which will not be described here.

[0051] It should be understood that the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced equivalently. All these modifications and replacements should be within the protection scope of the claims of the utility model.

Claims

1. A fan module, comprising: The fan module comprises a driving part, a first air duct and a second air duct; the second air duct is mounted on one end of the first air duct, and the first air duct and the second air duct are both through in the axial direction; the driving part is mounted in the first air duct, and the driving part comprises a plurality of fan blades which are distributed at intervals in the radial direction of the first air duct; the driving part drives the airflow to flow from the first air duct to the second air duct; A plurality of first air cutting pieces are arranged between the driving part and the second air duct in the first air duct, and the first air cutting pieces are arranged at intervals around the axis of the first air duct to form a plurality of first air flow channels; a plurality of second air cutting pieces are arranged at intervals around the axis of the second air duct in the second air duct, and the second air cutting pieces are arranged at intervals to form a plurality of second air flow channels; The first air cutting pieces are arranged in an arc shape in the circumferential direction of the first air duct, and the second air cutting pieces are arranged in an arc shape in the circumferential direction of the second air duct; and the bending direction of the first air cutting pieces is opposite to the bending direction of the second air cutting pieces.

2. The fan module of claim 1, wherein, A second connecting base is arranged in the second air duct; the axis of the second connecting base coincides with the axis of the second air duct; one end of the second air cutting pieces is connected to the second connecting base, and the other end is connected to the inner wall of the second air duct; the side of the second air cutting piece away from the first air duct is recessed towards the first air duct.

3. The fan module of claim 2, wherein, The top surface of the second connecting base is lower than the height of the side of the second air duct away from the first air duct.

4. The fan module of claim 2, wherein, A first recess is arranged on the second connecting base and is open on the side close to the first air duct.

5. The fan module of claim 4, wherein, A first connecting base is arranged in the first air duct; one end of the first air cutting pieces is connected to the first connecting base, and the other end is connected to the inner wall of the first air duct; the first recess is arranged in connection with the first connecting base.

6. The fan module according to any one of claims 1 to 5, characterized in that There is no gap between the second air cutting piece and the first air cutting piece in the projection in the radial direction of the first air duct and the second air duct.

7. The fan module according to any one of claims 1 to 5, wherein One side of one of the first air duct and the second air duct is provided with a fitting groove around the edge, and the other side of the other one is provided with a fitting edge; the fitting edge is fitted in the fitting groove.

8. The fan module according to any one of claims 1 to 5, characterized in that One end of the first air cutting piece close to the inner wall of the first air duct is arranged to be inclined in the clockwise or counterclockwise direction; the inclination direction of the fan blade is opposite to the inclination direction of the first air cutting piece.

9. The fan module of claim 8, wherein, The first air cutting piece is arranged to be inclined in the axial direction of the first air duct; and the fan blade is arranged to be curved in an arc shape.

10. A fan, characterized by The fan module comprises the fan module according to any one of claims 1 to 9.

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