CN111622967A - Airflow generator - Google Patents

Abstract

The invention discloses an airflow generator, comprising: an airflow introduction part and a motor part; the airflow guiding part comprises a volute, an impeller and an air guide wheel; the impeller is positioned on the first side of the air guide wheel, and the volute is sleeved on the outer sides of the impeller and the air guide wheel; a first fluid channel is arranged between the second side of the impeller and the first side of the air guide wheel; the air guide wheel is provided with a first air guide hole; the outer side of the air guide wheel is provided with an air guide sheet, and the air guide sheet and the volute form a second fluid channel; the motor part comprises a motor bracket and a motor body; the motor body comprises a motor bearing and a motor winding; a motor bearing cavity is arranged at the axis position of the motor support, a lapping part is arranged on the outer side of the motor bearing cavity, and a second air guide hole is formed in the first side of the lapping part; the first air guide holes and the second air guide holes form a third fluid channel, so that the heat dissipation efficiency of the airflow generator is improved.

Description

Airflow generator

Technical Field

The invention relates to the technical field of electromechanics, in particular to an airflow generator.

Background

In some appliances that require suction to operate, the airflow generator is a core component. Such as vacuum cleaners, sweeping robots, etc., are common. The principle of the airflow generator is that a motor drives an impeller to rotate at a high speed to generate negative pressure, so that suction force to fluid is generated. On the other hand, after the fluid is sucked into the airflow generator, the flow of the fluid can be utilized to dissipate heat of each component of the motor.

In the prior art, the structure of an airflow generator is shown in fig. 1. Fluid enters the airflow generator from the air inlet under the action of suction force and flows along the direction of an arrow in figure 1. Therefore, at the moment, the fluid passes through the gap between the air guide wheel and the motor outer cover, passes through the outer side of the motor winding and is discharged from the motor driving plate. In the process, the fluid can help the motor windings dissipate heat.

However, the prior art has the disadvantage that only the outside of the motor winding is able to dissipate heat sufficiently due to the flow path of the fluid. The inside of the motor winding and other components of the motor cannot be effectively radiated. It can be seen that the heat dissipation efficiency of the above structure is relatively low, which easily causes the temperature inside the airflow generator to be too high.

Disclosure of Invention

The invention provides an airflow generator, which improves the heat dissipation effect through the improvement of an internal structure.

The invention provides an airflow generator comprising: an airflow introduction part and a motor part;

the airflow guiding part comprises a volute, an impeller and an air guide wheel; the impeller is positioned on the first side of the air guide wheel, and the volute is sleeved on the outer sides of the impeller and the air guide wheel; a first fluid channel is arranged between the second side of the impeller and the first side of the air guide wheel; the air guide wheel is provided with a first air guide hole; the outer side of the air guide wheel is provided with an air guide sheet, and the air guide sheet and the volute form a second fluid channel;

the motor part comprises a motor bracket and a motor body; the motor body comprises a motor bearing and a motor winding; a motor bearing cavity is arranged at the axis position of the motor support, a lapping part is arranged on the outer side of the motor bearing cavity, and a second air guide hole is formed in the first side of the lapping part; the first air guide hole and the second air guide hole form a third fluid channel.

Preferably, a first fluid channel is arranged between the second side of the impeller and the first side of the air guide wheel, and specifically comprises:

and a gap is formed between the second side of the impeller and the first side of the air guide wheel, and the first fluid channel is formed by utilizing the gap.

Preferably, the air guide sheet arranged on the outer side of the air guide wheel is specifically as follows:

the outer wall surface of the air guide wheel is provided with a plurality of air guide blades at equal intervals.

Preferably, the second fluid channel formed by the wind-guiding sheet and the volute is specifically:

the adjacent air guide sheets and the volute are enclosed to form the second fluid channel.

Preferably, the second fluid channel formed by the wind-guiding sheet and the volute is specifically:

a second end of the second fluid passageway at a first end of the motor winding;

and the first end of the motor winding is provided with an air guide assembly.

Preferably, the first air guiding hole and the second air guiding hole form a third fluid channel, specifically:

the wind guide wheel sleeve is arranged on the first side of the overlapping part, and the first wind guide hole and the second wind guide hole are opposite in position, so that the first wind guide hole and the second wind guide hole form a third fluid channel.

Preferably, the overlapping part is specifically:

and the second side of the lap joint part is provided with an air guide groove which enables the second fluid channel to be communicated with the third fluid channel.

Preferably, the motor part further includes: a motor drive plate;

the motor bracket also comprises a bracket body, a first connecting column and a second connecting column; the motor body is fixed on the bracket body through the first connecting column; the motor driving plate is fixed on the second side of the bracket body through the second connecting column; the motor bearing cavity is arranged at the axis position of the bracket body; the motor bearing is arranged in the motor bearing cavity, and the end part of the first section of the motor bearing penetrates through the impeller.

According to the airflow generator provided by the invention, the first fluid channel, the second fluid channel and the third fluid channel are arranged through improving the structure of the airflow generator, so that fluid can fully dissipate the heat of the inner side and the outer side of the motor winding 222, and meanwhile, the heat of other parts such as the outer wall of the motor body 22, the motor driving plate 24 and the motor bearing cavity 211 can be dissipated, and the heat dissipation efficiency of the airflow generator is improved.

Further effects of the above-mentioned unconventional preferred modes will be described below in conjunction with specific embodiments.

Drawings

In order to more clearly illustrate the embodiments or the prior art solutions of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic diagram of a prior art airflow generator;

fig. 2 is a schematic structural diagram of an airflow generator according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an airflow generator according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an airflow introducing portion of an airflow generator according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an air guide wheel in the airflow generator according to an embodiment of the present invention;

figure 6 is a schematic diagram of a motor mount of an airflow generator according to an embodiment of the present invention;

figure 7 is a schematic diagram of a motor mount of an airflow generator according to an embodiment of the invention;

figure 8 is a schematic view of fluid flow in an airflow generator according to an embodiment of the invention;

figure 9 is a schematic view of fluid flow in an airflow generator according to an embodiment of the invention.

Wherein, in the figures, the respective reference numerals:

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and completely with reference to the following embodiments and accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the prior art, the structure of the airflow generator is shown in fig. 1. And the fluid enters the air flow generator from the air inlet under the action of suction. In the airflow generator shown in figure 1 there is only a single fluid path, i.e. in the direction of the arrows in figure 1. That is, the fluid will pass through the gap between the inducer and the motor housing, pass through the outside of the motor winding, and be discharged from the motor drive plate. In the process, fluid flows through the outer side of the motor winding, and the heat dissipation of the motor winding can be facilitated.

However, the prior art has the disadvantage that only the outside of the motor winding is able to dissipate heat sufficiently due to the flow path of the fluid. The inside of the motor winding and other components of the motor cannot be effectively radiated. It can be seen that the heat dissipation efficiency of the above structure is relatively low, which easily causes the temperature inside the airflow generator to be too high.

Accordingly, the present invention provides an airflow generator, which improves the heat dissipation effect through the improvement of the internal structure.

Referring to fig. 2-9, a particular embodiment of an airflow generator is provided in accordance with the present invention. In this embodiment, the airflow generator includes an airflow introduction portion 01 and a motor portion 02. Specifically, the airflow introducing part 01 may include a scroll 11, an impeller 12, and an air guide wheel 13; the motor part 02 may include a motor bracket 21 and a motor body 22, and may further include a motor housing 23 and a motor driving plate 24. As shown in fig. 2-3.

Referring to fig. 4, the impeller 12 is located on a first side of the inducer 13. As shown in fig. 3, the first side of the inducer 13 is above the inducer 13. The volute 11 is sleeved on the outer sides of the impeller 12 and the air guide wheel 13.

In the present embodiment, a first fluid channel is disposed between the second side of the impeller 12 and the first side of the wind guide wheel 13, as shown in fig. 4. The second side of the impeller 12 is in fig. 4 below the impeller 12. Unlike the structure shown in fig. 1 in which the impeller and the wind-guiding wheel are attached to each other in the prior art, in the airflow generator provided in this embodiment, a gap is provided between the second side of the impeller 12 and the first side of the wind-guiding wheel 13, and the first fluid channel is formed by using the gap.

The structure of the inducer 13 is shown in figure 5. The wind guide wheel 13 is provided with a first wind guide hole a. The outer side of the air guide wheel is provided with an air guide sheet 132. Specifically, the outer wall surface of the wind guide wheel 13 is provided with a plurality of wind guide blades 132 at equal intervals. The air guiding sheets 132 and the scroll 11 form a second fluid channel, that is, two adjacent air guiding sheets 132 and the scroll 11 together enclose to form a cavity, that is, the second fluid channel.

As shown in fig. 2, the motor body 22 includes a motor bearing 221 and a motor winding 222. The axial position of the motor bracket 21 is provided with a motor bearing cavity 211. The outer side of the motor bearing cavity 211 is provided with a lapping part 212.

As shown in fig. 6, the motor bracket 21 further includes a bracket body 213, a first connecting post 214 and a second connecting post 215. The motor body 22 is fixed to the bracket body 213 by the first connection post 214. The motor driving board 24 is fixed to a second side (i.e., a lower side in fig. 2) of the bracket body 213 through the second connection column 215. The motor bearing cavity 211 is disposed at an axial position of the bracket body 213. The motor bearing 221 is disposed in the motor bearing cavity 211. A first end (i.e., an upper end in fig. 2) of the motor bearing 221 penetrates the impeller 12, so that the motor can rotate the impeller 12.

A second air guiding hole b is formed on a first side (i.e., the upper side in fig. 2) of the overlapping part 212; the first air guiding hole a and the second air guiding hole b form a third fluid channel. Specifically, the wind-guiding wheel 13 is sleeved on the first side of the overlapping part 212, and the first wind-guiding hole a and the second wind-guiding hole b are opposite in position, so that the first wind-guiding hole a and the second wind-guiding hole b form a third fluid channel, as shown in fig. 4. In addition, a wind guide groove 216 is provided at a second side of the overlapping portion 212, and the wind guide groove 216 communicates the second fluid passage with the third fluid passage. As shown in fig. 7.

It should be noted that, in the airflow generator configured as described above, when the impeller 12 rotates to cause the fluid to be sucked, the flow of the fluid in the airflow generator is as shown by arrows in fig. 8 to 9. The sucked fluid a will first enter the first fluid channel and be split at the position of the inducer 13 into fluid B and fluid C.

Wherein the fluid C will enter the second fluid passage and flow in a second direction (i.e. downwards as shown) of the flow generator. The second end of the second fluid passageway (the lower end shown in fig. 9) may be located at the first end (the upper end shown in fig. 9) of the motor windings 222. I.e., the direction of flow of fluid C is opposite the first end of motor windings 222. Preferably, a first end of the motor winding 222 is provided with an air guide assembly (not shown in fig. 9), so as to further split the fluid C to flow through the inner side and the outer side of the motor winding 222 respectively. The diverted flow sheet C will exit the flow generator via the motor drive plate 24.

In addition, the fluid B will enter the third fluid channel, i.e. pass through the first wind guiding hole a and the second wind guiding hole B in sequence, and continue to flow in the second direction of the airflow generator (i.e. downward in fig. 9), i.e. through the inner side of the motor winding 222. And finally exits the airflow generator via motor drive plate 24.

It will be appreciated that the fluid flow described above, as in the prior art, can not only dissipate heat to the outside of the motor windings 222. Meanwhile, the fluid B and the fluid C flowing through the inner side of the motor winding 222 can dissipate heat of the inner side of the motor winding 222, the outer wall of the motor body 22 and the motor driving board 24. The fluid B can also dissipate heat from the motor bearing cavity 211 when flowing through the third fluid passage. Thereby enhancing the heat dissipation effect for the airflow generator.

Preferably, the second end of the motor housing 23 (i.e., the bottom end portion shown in fig. 9) may extend toward the second end of the motor windings 222 (the lower end portion shown in fig. 9), thereby increasing the space at the second end of the airflow generator (the lower end portion shown in fig. 9) and the length of the flow path for the fluid C. So that the fluid C can be in more sufficient contact with the outside of the motor winding 222, further improving the heat dissipation effect.

In the present embodiment, the motor housing 23 is extended such that the second end thereof does not extend beyond the motor drive plate 24. The heat dissipation from the motor drive plate 24 is also achieved by the fluid C flowing through the portion outside the motor windings 222.

According to the technical scheme, the beneficial effects of the embodiment are as follows: through the improvement to airflow generator structure, set up first fluid passage, second fluid passage and third fluid passage for fluid can be abundant dispel the heat to the inside and outside both sides of motor winding 222, and can realize the heat dissipation to other parts such as the outer wall of motor body 22, motor drive plate 24 and motor bearing chamber 211 simultaneously, improved airflow generator's radiating efficiency.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.

The embodiments of the present invention are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (8)

1. An airflow generator, comprising: an airflow introduction part and a motor part;

the airflow guiding part comprises a volute, an impeller and an air guide wheel; the impeller is positioned on the first side of the air guide wheel, and the volute is sleeved on the outer sides of the impeller and the air guide wheel; a first fluid channel is arranged between the second side of the impeller and the first side of the air guide wheel; the air guide wheel is provided with a first air guide hole; the outer side of the air guide wheel is provided with an air guide sheet, and the air guide sheet and the volute form a second fluid channel;

the motor part comprises a motor bracket and a motor body; the motor body comprises a motor bearing and a motor winding; a motor bearing cavity is arranged at the axis position of the motor support, a lapping part is arranged on the outer side of the motor bearing cavity, and a second air guide hole is formed in the first side of the lapping part; the first air guide hole and the second air guide hole form a third fluid channel.

2. The airflow generator of claim 1 wherein a first fluid passageway is provided between the second side of the impeller and the first side of the inducer, specifically:

and a gap is formed between the second side of the impeller and the first side of the air guide wheel, and the first fluid channel is formed by utilizing the gap.

3. The airflow generator of claim 1 wherein the external side of the inducer is provided with air deflectors comprising:

the outer wall surface of the air guide wheel is provided with a plurality of air guide blades at equal intervals.

4. The airflow generator of claim 3 wherein the second fluid path formed by the wind-guiding plate and the scroll is specifically:

the adjacent air guide sheets and the volute are enclosed to form the second fluid channel.

5. The airflow generator of claim 4 wherein the second fluid path formed by the wind-guiding plate and the scroll is specifically:

a second end of the second fluid passageway at a first end of the motor winding;

and the first end of the motor winding is provided with an air guide assembly.

6. The airflow generator of claim 1 wherein the first and second air-guide holes form a third fluid passageway specifically defined by:

the wind guide wheel sleeve is arranged on the first side of the overlapping part, and the first wind guide hole and the second wind guide hole are opposite in position, so that the first wind guide hole and the second wind guide hole form a third fluid channel.

7. The airflow generator of claim 1 wherein the bridge is embodied as:

and the second side of the lap joint part is provided with an air guide groove which enables the second fluid channel to be communicated with the third fluid channel.

8. The airflow generator of claim 1 wherein the motor section further comprises: a motor drive plate;

the motor bracket also comprises a bracket body, a first connecting column and a second connecting column; the motor body is fixed on the bracket body through the first connecting column; the motor driving plate is fixed on the second side of the bracket body through the second connecting column; the motor bearing cavity is arranged at the axis position of the bracket body; the motor bearing is arranged in the motor bearing cavity, and the end part of the first section of the motor bearing penetrates through the impeller.

Images