CN111648999A

CN111648999A - Heat dissipation fan blade, air ducting and fan

Info

Publication number: CN111648999A
Application number: CN202010455132.9A
Authority: CN
Inventors: 彭国华; 柯亨钊
Original assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Current assignee: Zhejiang Lera New Energy Power Technology Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-09-11

Abstract

The invention discloses a heat dissipation fan blade, which relates to the technical field of garden tools and is used for solving the problem that the existing fan blade is difficult to dissipate heat of a motor when being matched with a guide cone; the first blades of the first blade group are all arranged on the inner mounting seat, and a first channel formed by adjacent first blades is communicated with the interior of the guide cone; the outer mounting base is connected with at least one first blade to realize connection with the inner mounting base; the second blade of second blade group all installs on outer mount pad to dispel the heat to the complex motor. The invention also discloses an air guide device and a fan.

Description

Heat dissipation fan blade, air ducting and fan

Technical Field

The invention relates to the technical field of garden tools, in particular to a heat dissipation fan blade, an air guide device and a fan.

Background

Axial fan occupies very big market in the existing market, and it relies on characteristics such as unique small, high efficiency, low noise, energy-conservation, receives user's favor more and more.

Axial flow blowers are small and almost as large as air ducts. This limits the installation position of the motor. The motor on the existing market is installed in the guide cone more, and the guide cone and the mounting seat of the blade form a closed space, so that the heat dissipation of the motor is not facilitated, the service life of the motor is further influenced, and therefore a new blade and a new air guide device need to be arranged, and the heat dissipation of the motor is facilitated.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the objectives of the present invention is to provide a heat dissipation blade, so as to facilitate heat dissipation of a motor.

One of the purposes of the invention is realized by adopting the following technical scheme:

a heat dissipation fan blade sequentially comprises an inner mounting seat, a first blade group, an outer mounting seat and a second blade group from inside to outside, wherein the inner mounting seat is used for being connected with a rotor of a motor; the first blades of the first blade group are all arranged on the inner mounting base, and a first channel formed by adjacent first blades is communicated with the interior of the guide cone; the outer mounting seat is connected with at least one first blade to realize connection with the inner mounting seat; and the second blades of the second blade group are arranged on the outer mounting seat.

Further, a second channel formed by adjacent second blades is isolated from the interior of the guide cone; the first blade and the second blade have the same inclination direction.

Furthermore, one end, back to the diversion cone, of the outer mounting seat is marked as an end portion B, a reinforcing cover is arranged on the end portion B, the reinforcing cover seals the end portion B and forms a protection space surrounding the inner mounting seat together with the outer mounting seat, and the reinforcing cover is provided with a ventilation opening communicated with the protection space.

Further, the inner mount is connected with the reinforcing cover.

Further, the first channel is communicated with at least one ventilation opening correspondingly.

Furthermore, a third blade group is arranged on the surface, far away from the end part B, of the reinforcing cover, and the third blade group is used for guiding outside air into the protective space from the ventilation opening.

Further, the third blades are arranged in a staggered mode with the first blades; the third blade has the same inclination direction as the corresponding first blade.

Furthermore, the third blade corresponds to the ventilation opening, one end of the third blade is connected to the reinforcing cover, and the other end of the third blade shields the corresponding ventilation opening.

Another object of the present invention is to provide an air guide device which has an advantage of dissipating heat from a built-in motor, thereby improving the service life of the motor. The second purpose of the invention is realized by adopting the following technical scheme: an air guide device comprises an air duct, a flow guide cone, a motor and the heat dissipation fan blade, wherein the flow guide cone is arranged in the air duct, and the tail part of the flow guide cone is provided with an opening; the motor is arranged in the diversion cone; the heat dissipation fan blade is arranged at one end of the air channel, the first channel is opposite to the tail part of the flow guide cone, and the inner mounting seat of the heat dissipation fan blade is connected to the rotor of the motor in a matching mode.

The invention also aims to provide a fan which has the advantage of radiating the built-in motor, so that the service life of the motor is prolonged. The third purpose of the invention is realized by adopting the following technical scheme:

a fan comprises a casing, wherein the casing is provided with a duct, a guide cone and a motor are further installed in the duct, the tail of the guide cone is opened, the motor is installed in the guide cone in a matching mode, the heat dissipation fan blade as claimed in any one of claims 1 to 8 is installed on a rotor of the motor in a matching mode, and a first channel of the heat dissipation fan blade is communicated with the tail of the guide cone to form a heat dissipation channel for dissipating heat of the motor.

Compared with the prior art, the invention has the beneficial effects that: the heat dissipation fan blade is provided with a first blade group and a second blade group, and the first blade group realizes air flow inside and outside the inner mounting seat when rotating, namely when the heat dissipation fan blade is correspondingly mounted with the motor, the first blade group drives airflow to flow through the motor and leave the motor, so that heat dissipation of the motor is realized, and the service life of the motor is further prolonged; the second blade set realizes the air flow inside and outside the outer mounting seat when rotating, namely, the second blade set can help to realize the blowing and sucking functions when being mounted on corresponding equipment. The air guide device is provided with the heat dissipation fan blade, so that when the second blade group conducts air, the first blade group can dissipate heat of the motor, and the service life is prolonged. The fan has the air guide mechanism, not only does not influence the whole structure, but also can realize heat dissipation of the built-in motor so as to prolong the service life of the motor.

Drawings

Fig. 1 is a schematic structural view of a heat dissipation fan blade according to an embodiment one;

fig. 2 is a schematic structural view of a heat dissipation blade according to the third embodiment, showing a positional relationship between a reinforcing cover and an outer mount;

fig. 3 is a schematic structural view of the heat dissipation fan blade according to the third embodiment, which shows a positional relationship between the ventilation opening and the first blade;

fig. 4 is a schematic structural view of the heat dissipation fan blade according to the third embodiment, which shows a positional relationship between the ventilation opening and the third blade;

fig. 5 is a schematic structural view of an air guiding device according to a fourth embodiment;

FIG. 6 is a cross-sectional view of FIG. 5;

fig. 7 is a schematic structural view of the fan according to the fifth embodiment.

In the figure: 10. a heat dissipation fan blade; 101. an inner mounting seat; 102. a first blade; 103. an outer mount; 104. a second blade; 105. a reinforcing cover; 1051. a vent; 106. a third blade; 20. a flow guide cone; 30. an air duct; 40. a motor; 50. a fan.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, in which the description of the invention is given by way of illustration and not of limitation. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

Example one

The embodiment provides a heat dissipation fan blade 10, and aims to solve the problem that an existing fan blade is difficult to dissipate heat of a motor 40 when being installed in a matching mode with a flow guide cone 20. Specifically, referring to fig. 1, the heat dissipation fan blade 10 includes an inner mount 101, a first blade group, an outer mount 103, and a second blade group.

The outer periphery of the inner mounting base 101 may be disposed in a circular shape or a square shape, but considering that the inner mounting base 101 needs to rotate synchronously with the rotor of the motor 40, the outer periphery of the inner mounting base 101 is preferably disposed in a circular shape. The inner mounting seat 101 may be provided with a through hole at a central position along the thickness direction thereof, the through hole may be directly inserted into the rotor of the motor 40 in a matching manner, or may be embedded with an insertion ring inserted into the rotor of the motor 40 in a matching manner, and the specific manner is not limited herein, as long as the synchronous rotation with the rotor of the motor 40 is achieved.

The first vane group is composed of more than one first vane 102, and the number of the first vane groups is not limited herein. The first blades 102 are all fixedly mounted on the inner mounting base 101 and may be distributed along the inner mounting base 101 or the rotor circumference of the motor 40, so that the first blades 102 may rotate synchronously with the inner mounting base 101.

However, a first channel is formed between adjacent first blades 102, and when the heat dissipation fan blade 10 is installed in the corresponding air duct 30, the rotor of the motor 40 is inserted into the through hole or the insertion ring, and the first channel is communicated with the interior of the guide cone 20. Therefore, when the rotor of the motor 40 rotates, the first blades 102 rotate synchronously, so that the external air is blown from the front part of the guiding cone 20 to the rear part of the guiding cone 20 and leaves from the first channel, or the external air enters the guiding cone 20 through the first channel and is blown from the rear part of the guiding cone 20 to the front part of the guiding cone 20, so as to dissipate heat inside the guiding cone 20 and the motor 40, and further improve the service life of the motor 40.

The first blades 102 are located between the inner mounting base 101 and the outer mounting base 103, wherein at least one first blade 102 is fixed to the outer mounting base 103 so as to drive the outer mounting base 103 to rotate synchronously. The outer mounting seat 103 may be a circular ring or a square ring, but considering that the outer mounting seat 103 needs to rotate, the outer mounting seat 103 is preferably a circular ring, and when the heat dissipation fan blade 10 is mounted on the rotor of the motor 40, the outer mounting seat 103 is disposed coaxially with the rotor of the motor 40.

The second blade group is composed of a plurality of second blades 104, and the number of the second blades is not limited herein. The second blades 104 are fixed on the outer mounting base 103 and can be distributed along the circumferential direction of the outer mounting base 103 or the rotor of the motor 40, and the second channel formed by the adjacent second blades 104 is communicated with the inside of the air duct 30, when the second blades 104 and the rotor of the motor 40 rotate synchronously, the corresponding air guide device or the fan 50 can realize the blowing or suction function under the action of the second blades 104.

It should be noted that the first blade 102 is preferably provided integrally with the inner mount 101, the second blade 104 is preferably provided integrally with the outer mount 103, and the outer mount 103 is preferably provided integrally with the connected first blade 102.

In summary, the heat dissipation fan blade 10 has a first blade group and a second blade group, and the first blade group realizes air flow inside and outside the inner mounting seat 101 when rotating, that is, when the heat dissipation fan blade 10 is installed corresponding to the motor 40, the first blade group drives the air flow to flow through the motor 40 and leave, so as to realize heat dissipation of the motor 40, and further improve the service life of the motor 40; the second blade set realizes air flow inside and outside the outer mounting seat 103 when rotating, namely, can help to realize a blowing and sucking function when being mounted on corresponding equipment.

Example two

The embodiment provides a heat dissipation fan blade 10, which is implemented on the basis of the first embodiment. Specifically, the outer mounting seat 103 is arranged in a circular ring shape, that is, the outer mounting seat 103 and the rotor of the motor 40 are coaxially arranged when the rotor of the motor 40 is correspondingly connected with the heat dissipation fan blade 10. The number of the second blades 104 is preferably 6-12 and is uniformly distributed on the edge of the outer mount 103.

The second passages formed between adjacent second vanes 104 are isolated from the corresponding guide cones 20. It should be noted that, when the guiding cone 20 is installed in the air duct 30, the inner portion of the guiding cone 20 is an inner channel, an outer channel is formed between the outer wall of the guiding cone 20 and the inner wall of the air duct 30, and when the heat dissipating fan blade 10 is installed in cooperation with the air duct 30, the first channel is communicated with the inner channel to realize air exchange of the inner channel; the second channel is communicated with the outer channel to realize corresponding blowing and sucking effects; and the second channel is isolated from or not open to the inner channel, thereby preventing the airflow generated by the first blade 102 from having an effect on the airflow generated by the second blade 104.

Preferably, the outer diameter of the guiding cone 20 is equal to the outer diameter of the outer mounting seat 103, so that the second channel can be isolated from the inner channel on the one hand, and the first channel can be isolated from the outer channel on the other hand, thereby improving the wind generating efficiency of the second blade 104 and reducing the mutual interference of the two airflows.

As an optional technical solution, the first blades 102 are uniformly distributed along the circumferential direction of the inner through hole. It can be understood that one end of the first blade 102 is fixed on the outer mounting seat 103, and the other end is disposed in a curved and inclined manner, and if the inclined direction is the inner side of the outer mounting seat 103, the corresponding air guiding device blows air; if the inclination direction is outside the outer mounting base 103, the corresponding air guiding device is used for air suction.

When the inclination directions of the first blade 102 and the second blade 104 are the same, the direction of the airflow generated by the first blade group is the same as that of the airflow generated by the second blade group, and if the two ends of the guide cone 20 are communicated, the final blowing and sucking effect can be enhanced after the airflows generated by the first blade group and the second blade group are converged; when the inclination directions of the first blade 102 and the second blade 104 are opposite, the airflow generated by the first blade group is opposite to the airflow generated by the second blade group, and if the two ends of the guide cone 20 are communicated, the final blowing and sucking effect will be weakened after the airflows generated by the first blade group and the second blade group are merged. The first blade 102 and the second blade 104 are preferably inclined in the same direction.

As an optional technical solution, when the head end of the guide cone 20 is closed to cause that the two ends of the guide cone 20 are not communicated, the mutual interference of the airflows generated by the first blade group and the second blade group is small. The pitch directions of the first blade 102 and the second blade 104 may not be limited.

It can be understood that, since the two ends of the guide cone 20 are not communicated with each other, if the first blade 102 faces the inner side of the inner mounting seat 101, the airflow generated by the first blade 102 firstly enters the guide cone 20, and the air in the guide cone 20 exits the guide cone 20 through the first channel, but compared with the above technical solution when the two ends of the guide cone 20 are communicated with each other, the air flow of the guide cone 20 in the technical solution is slow and the exchange rate with the outside air is low.

In order to improve the exchange rate between the guide cone 20 and the external air when the two ends of the guide cone 20 are not communicated with each other, the inclination directions of the first blades 102 are the same, but the inclination angles are different, and preferably gradually increase and then gradually decrease along the circumferential direction of the inner mounting seat 101, so that the air velocity passing through the first passages is different, so as to move the air in the guide cone 20, thereby improving the exchange rate with the external air, and further improving the heat dissipation effect of the motor 40.

As an alternative, when the head end of the guide cone 20 is closed to cause the two ends of the guide cone 20 not to communicate with each other, in order to improve the exchange rate between the guide cone 20 and the outside air when the two ends of the guide cone 20 do not communicate with each other, the inclination direction of a part of the first blades 102 may be opposite to the inclination direction of another part of the first blades 102. Preferably, the first blades 102 with the same inclination direction are gathered, so that during the rotation of the fan blade 10, a part of air enters the guide cone 20 from the outside, and a part of air in the guide cone 20 flows to the outside. To increase the air exchange rate.

EXAMPLE III

The embodiment provides a heat dissipation fan blade 10, which is implemented on the basis of the first embodiment or the second embodiment.

Specifically, referring to fig. 2 and 3, an end of the outer mounting seat 103 facing away from the deflector cone 20 is referred to as an end B. Wherein the end B is fixed with a reinforcing cover 105, the reinforcing cover 105 is preferably arranged integrally with the outer mount 103, the reinforcing cover 105 forms a protective space half enclosed with the outer mount 103, and the first blade 102 and the inner mount 101 are both located in the protective space. The reinforcing cover 105 is further provided with a ventilation opening 1051 therethrough, and the ventilation opening 1051 communicates with the protection space, thereby facilitating air exchange between the protection space and the outside.

By providing the reinforcing cover 105, the outside air needs to pass through the ventilation opening 1051, the protection space, the first channel, and the inside of the guiding cone 20 once, that is, the air entering the protection space is filtered, so as to prevent large-volume objects from entering the guiding cone 20, thereby ensuring the normal operation of the motor 40.

Further, the inner mounting seat 101 is fixed to the reinforcing cover 105, preferably integrally provided, so that the inner mounting seat 101 is fixed to the outer mounting seat 103 via the first blade 102 and is also fixed to the outer mounting seat 103 via the reinforcing cover 105, thereby improving the overall stability of the heat dissipating fan blade 10.

As an alternative solution, referring to fig. 2 and 3, each first channel is communicated with at least one first ventilation opening 1051, so as to realize that each first channel generates airflow correspondingly. For example: the ventilation openings 1051 may be formed in an arc shape so that one ventilation opening 1051 may correspond to a plurality of first passages, but may cause a reduction in stability of the reinforcing cover 105; the ventilation openings 1051 may also be arranged in the radial direction of the inner mount 101, so that the number of ventilation openings 1051 should be greater than or equal to the number of first channels, but have a small influence on the stability of the reinforcing cover 105. The ventilation opening 1051 is preferably provided in the radial direction of the inner mount 101 in view of enhancing the stability of the cover 105.

Preferably, as shown in fig. 4, a third vane group is disposed on a surface of the reinforcing cover 105 away from the end B, and the third vane group is used for guiding the outside air from the ventilation opening 1051 into the protection space to improve the air exchange rate between the protection space and the outside. The third vane cluster includes a third vane 106. The third blade 106 is preferably provided integrally with the reinforcing cover 105. The third blades 106 are arranged in a staggered manner with respect to the first blades 102, so that the airflow generated by the third blades 106 can be rapidly sent into the guide cone 20 through the first channel under the action of the first blades 102, that is, the speed of the airflow entering the guide cone 20 is increased.

To avoid adversely affecting the airflow generated by the first vane 102, the third vane 106 is preferably inclined in the same direction as the corresponding first vane 102, for example clockwise, corresponding to the first vane 102 closest to the third vane 106.

Preferably, referring to fig. 4, the number of the third blades 106 is the same as that of the ventilation openings 1051, and the third blades 106 are disposed in one-to-one correspondence with the ventilation openings 1051. One end of the third vane 106 is connected to the reinforcing cover 105, and the other end faces and blocks the corresponding vent 1051.

It is worth noting here that the end of the third blade 106 connected to the reinforcing cover 105 is preferably parallel to the ventilation opening 1051, and the other end is also preferably parallel to the ventilation opening 1051, the shielding is a visual effect by looking at the end B, and the shielding rate can be 50% -100%, so as to enhance the filtering effect to avoid large-volume objects from entering the protected space.

The end of the third vane 106 remote from the corresponding vent 1051 has a guide surface that curves toward the corresponding vent 1051. It is understood that the third blade 106 has vents 1051 at both ends, and one of the vents 1051 is covered by and corresponds to the other vent 1051, so that when the airflow contacts the guide surface, the airflow is facilitated to flow to the other vent 1051 under the action of the guide surface, thereby playing a role of guiding.

Example four

The present embodiment provides an air guiding device, as shown in fig. 5 and fig. 6, which includes an air duct 30, a guiding cone 20, a motor 40, and a heat dissipating fan blade 10 according to any one of the first to third embodiments.

Both ends of the air duct 30 are opened for air intake or air exhaust. The guide cone 20 is fixed in the air duct 30, an outer channel is formed between the outer wall of the guide cone 20 and the inner wall of the air duct 30, an inner channel is formed inside the guide cone 20, and the tail of the guide cone 20 is open. The motor 40 is fixed in the guide cone 20, and a rotor of the motor 40 extends out of the tail opening of the guide cone 20. The heat dissipation fan blade 10 is disposed at one end of the air duct 30, the first channel is disposed opposite to the tail of the guide cone 20, and the inner mounting seat 101 of the heat dissipation fan blade 10 is connected to the rotor of the motor 40 in a matching manner.

It should be noted that, when the head end of the guide cone 20 is opened so that the two ends thereof communicate with each other, the first blade 102 and the second blade 104 are preferably inclined in the same direction; when the head end of the guide cone 20 is closed so that the two ends of the guide cone are not communicated, the inclination directions of the first blades 102 are the same, but the inclination angles are different, or the inclination direction of a part of the first blades 102 may be opposite to the inclination direction of another part of the first blades 102.

The air guide device is provided with the heat dissipation fan blade 10, so that when the second blade group conducts air, the first blade group can dissipate heat of the motor 40, and the service life is prolonged.

EXAMPLE five

The embodiment provides a fan 50, as shown in fig. 7, which includes a casing having a duct, a flow guide cone and a motor are further installed in the duct, a tail of the flow guide cone is open, the motor is installed in the flow guide cone in a matching manner, a rotor of the motor is installed with a heat dissipation fan blade 10 according to any one of the first to third embodiments in a matching manner, and a first channel of the heat dissipation fan blade 10 is communicated with a tail of the flow guide cone and forms a heat dissipation channel for dissipating heat of the motor.

The fan is arranged, so that the whole structure is not influenced, heat dissipation can be achieved for the built-in motor, and the service life of the motor is prolonged.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A heat dissipation fan blade is characterized by sequentially comprising an inner mounting seat, a first blade group, an outer mounting seat and a second blade group from inside to outside, wherein the inner mounting seat is used for being connected with a rotor of a motor; the first blades of the first blade group are all arranged on the inner mounting base, and a first channel formed by adjacent first blades is communicated with the interior of the guide cone; the outer mounting seat is connected with at least one first blade to realize connection with the inner mounting seat; and the second blades of the second blade group are arranged on the outer mounting seat.

2. The heat-dissipating fan blade according to claim 1, wherein the second channel formed by adjacent second blades is isolated from the interior of the guide cone; the first blade and the second blade have the same inclination direction.

3. The heat dissipation fan blade according to claim 1, wherein an end of the outer mount facing away from the flow guide cone is denoted as an end B, the end B is provided with a reinforcing cover, the reinforcing cover closes the end B and forms a protection space surrounding the inner mount with the outer mount, and the reinforcing cover is provided with a vent communicated with the protection space.

4. The heat-dissipating fan blade according to claim 3, wherein the inner mount is connected to the reinforcing cover.

5. The heat-dissipating fan blade according to claim 3, wherein the first channel is in communication with at least one vent.

6. The heat dissipation fan blade according to claim 3, wherein a third blade group is disposed on a surface of the reinforcing cover away from the end portion B, and the third blade group is configured to guide outside air from the ventilation opening into the protection space.

7. The heat-dissipating fan blade according to claim 6, wherein the third blades are staggered with the first blades; the third blade has the same inclination direction as the corresponding first blade.

8. The heat dissipation fan blade of claim 6, wherein the third blade corresponds to the ventilation opening, one end of the third blade is connected to the reinforcing cover, and the other end of the third blade covers the corresponding ventilation opening.

9. An air guide device is characterized by comprising an air duct, a guide cone, a motor and the heat dissipation fan blade as claimed in any one of claims 1 to 8, wherein the guide cone is arranged in the air duct, and the tail part of the guide cone is provided with an opening; the motor is arranged in the diversion cone; the heat dissipation fan blade is arranged at one end of the air channel, the first channel is opposite to the tail part of the flow guide cone, and the inner mounting seat of the heat dissipation fan blade is connected to the rotor of the motor in a matching mode.

10. A fan is characterized by comprising a casing, wherein the casing is provided with a duct, a guide cone and a motor are further installed in the duct, the tail of the guide cone is opened, the motor is installed in the guide cone in a matching mode, the heat dissipation fan blade as claimed in any one of claims 1 to 8 is installed on a rotor of the motor in a matching mode, and a first channel of the heat dissipation fan blade is communicated with the tail of the guide cone to form a heat dissipation channel for dissipating heat of the motor.