CN203892247U - Impeller structure - Google Patents

Abstract

The utility model discloses an impeller structure, which comprises a lower cover plate and a plurality of arc-shaped blades designed on the lower cover plate, and the connecting axes of the blades are distributed along the lower cover plate in an involute form. The impeller structure is suitable for high-vacuum, high-speed brushless DC vacuum cleaner motors. The impeller structure is a semi-open impeller structure, which is relatively small in size and convenient to carry; less material is used and the production cost is lower. Moreover, the blades are distributed in an involute type on the lower cover plate. This structural form runs more smoothly, has higher work performance, less energy consumption, lower use cost, and less noise, and the quality of the working environment is higher. There is an impeller cover above the blades, and the blades and the impeller cover are in clearance fit. The impeller cover also acts as an upper cover in this structure, and forms a closed impeller structure with the lower cover and the blades, which reduces the volume of the motor. At the same time, it ensures the working efficiency of the impeller and meets the needs of the motor with small volume and high speed. The blade and the lower cover are integrally formed, and the structural strength is high.

Description

an impeller structure

technical field

The utility model belongs to the technical field of production and manufacture of vacuum cleaner motors, and in particular relates to an impeller structure.

Background technique

The vacuum cleaner is a cleaning appliance that uses a motor to drive the blades to rotate at high speed, and generates air negative pressure in the sealed housing, thereby sucking dust into the dust bag. Vacuum cleaners can generally be divided into vertical, horizontal and portable according to their structural composition.

The vacuum cleaner motor is the core component of the vacuum cleaner. It generally consists of two parts, the motor part and the fan part. Because the vacuum cleaner motor has high requirements on the speed, usually at 20,000-30,000 revolutions per minute, the conventional vacuum cleaner motor generally uses a series-excited vacuum cleaner motor. and small DC vacuum cleaner motors. Both the series-excited vacuum cleaner motor and the small DC vacuum cleaner motor belong to the brush motor, and its speed is between 20,000-40,000. Although the speed can meet the requirements of the vacuum cleaner motor, the brush motor has a large volume, a large motor fan, and a large load. Noise is high.

The impeller of the traditional vacuum cleaner motor is an aluminum impeller, which is a closed impeller structure, usually including an upper cover, a lower cover, and blades arranged between the upper and lower cover. The material is made of aluminum alloy. The closed impeller The work efficiency is high, but it is difficult to manufacture, and the upper and lower cover plates and blades of the aluminum impeller are assembled, the structure is complex, the upper and lower cover plates are easy to loose and damage, and generally the volume is large, the quality is heavy, and the production cost Higher, the noise is louder during operation. Compared with the closed impeller, the semi-open impeller and the open impeller have relatively small volume, but their work efficiency is low.

With the development of the electrical industry, vacuum cleaner motors are gradually developing towards high performance, high efficiency, and miniaturization. Brushless DC motors are recognized in the industry for their advantages of small size, low noise, high efficiency, good reliability, and strong adaptability. more and more widely used.

In order to reduce the overall volume of the vacuum cleaner, it is generally driven by a brushless motor. In order to meet the use requirements of the brushless motor, the impeller structure generally needs to be made smaller. The traditional aluminum closed impeller is no longer suitable for the brushless motor, and the traditional The performance of the impeller structure is low, the energy consumption is large, and the use cost is high.

Therefore, in view of the above problems, it is necessary to propose a new type of impeller structure to meet the needs of the brushless motor impeller, while ensuring the high speed of the motor, reduce the volume of the motor, facilitate portability, improve the performance of the motor, and reduce energy consumption. Reduce power consumption, reduce working noise, and improve environmental quality.

Utility model content

In view of this, the utility model provides an impeller structure, by adopting the impeller structure in which the lower cover plate and the blades are integrally formed to meet the use requirements of the impeller of the brushless motor, while ensuring the high speed of the motor, the volume of the motor is reduced , easy to carry, improve the performance of the motor, reduce energy consumption, reduce working noise, and improve environmental quality.

An impeller structure proposed according to the purpose of the utility model is applied to a brushless vacuum cleaner motor. A plurality of arc-shaped blades are designed on the lower cover of the impeller structure, and the connecting axis of the blades is involute along the lower cover. distributed.

Preferably, the blade is integrally formed on the lower cover, and the blade extends from the axis of the lower cover to the edge of the lower cover.

Preferably, the tops of the blades are rounded.

Preferably, an impeller cover is arranged above the blades, an air inlet is opened at the center of the impeller cover, and the blades are in clearance fit with the impeller cover.

Preferably, the inner side of the impeller cover opposite to the blade is recessed toward the center to form an arc surface, and the arc surface formed by the outer edge of the blade after rotation is parallel to the arc surface inside the impeller cover, when the impeller After the shroud is fitted over the blade, the impeller shroud is clearance fit with the blade.

Preferably, the blade is divided into two sections according to height changes, namely a connecting section and an extension section, the connecting section is connected to the axis of the lower cover plate, the height of the connecting section is the same, and the extending section is from the section to the The terminal gradually slopes downwards, decreasing in height.

Preferably, the extension section gradually slopes downward in a curved line from the section to the end.

Preferably, the blade segments are rounded.

Compared with the prior art, the advantages of the impeller structure disclosed in the utility model are:

1. The impeller structure is suitable for high-vacuum, high-speed brushless DC vacuum cleaner motors.

The impeller structure only includes a lower cover plate and a plurality of arc-shaped blades on it to form a semi-open impeller structure. The impeller structure is relatively small in size and easy to carry; less material is used and the production cost is lower.

There is an impeller cover above the blade, and the blade and the impeller cover are in clearance fit. The impeller cover also acts as an upper cover in this structure, and forms a closed impeller structure with the lower cover and the blades, which reduces the volume of the motor. At the same time, it ensures the working efficiency of the impeller and meets the needs of the motor with small volume and high speed.

2. The blades are connected to the shaft center of the lower cover plate and are distributed in an involute type on the lower cover plate. The impeller with this structure runs relatively smoothly, has high working performance, low energy consumption, low cost of use, and low operating noise. Small, high quality working environment. The blades are connected to the axis of the lower cover plate, so that the structure of the entire impeller is relatively compact, the connection stability is good, and the structural strength is high.

3. The blade and the lower cover plate are integrally formed, with high structural strength and good performance, which avoids loose damage between the cover plate and the blade, and improves the service life of the impeller.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of an impeller structure disclosed by the utility model.

Figure 2 is a schematic diagram of the gap between the blade and the impeller cover.

Figure 3 is an exploded view of the impeller structure.

The names of the corresponding parts represented by numbers or letters in the figure:

1. Lower cover plate 2. Blade 3. Impeller cover 4. Air inlet 5. Arc surface 6. Connecting section 7. Extension section 8. Shaft center

Detailed ways

The impeller of the traditional vacuum cleaner motor is an aluminum impeller, which is a closed impeller structure, usually including an upper cover, a lower cover, and blades arranged between the upper and lower covers. The working efficiency of the closed impeller is relatively high. However, it is difficult to manufacture, and the upper and lower cover plates and blades of the aluminum impeller are assembled, the structure is complex, the volume is generally large, the quality is heavy, the production cost is high, and the noise is relatively large during operation. Compared with the closed impeller, the semi-open impeller and the open impeller are relatively smaller in volume, but their work efficiency is low, and they cannot meet the needs of high-speed use.

The utility model provides an impeller structure aiming at the deficiencies in the prior art. By adopting the impeller structure integrally formed with the lower cover plate and the blades, the use requirements of the impeller of the brushless motor are met, and while ensuring the high speed of the motor, the Small motor size, easy to carry, improve motor performance, reduce energy consumption, reduce working noise, and improve environmental quality.

An impeller structure proposed according to the purpose of the utility model is applied to a brushless vacuum cleaner motor. A plurality of arc-shaped blades are designed on the lower cover of the impeller structure, and the connecting axis of the blades is involute along the lower cover. distributed.

Preferably, the blade is integrally formed on the lower cover, and the blade extends from the axis of the lower cover to the edge of the lower cover.

Preferably, the tops of the blades are rounded.

Preferably, an impeller cover is arranged above the blades, an air inlet is opened at the center of the impeller cover, and the blades are in clearance fit with the impeller cover.

Preferably, the inner side of the impeller cover opposite to the blade is recessed toward the center to form an arc surface, and the arc surface formed by the outer edge of the blade after rotation is parallel to the arc surface inside the impeller cover, when the impeller After the shroud is fitted over the blade, the impeller shroud is clearance fit with the blade.

Preferably, the blade is divided into two sections according to height changes, namely a connecting section and an extension section, the connecting section is connected to the axis of the lower cover plate, the height of the connecting section is the same, and the extending section is from the section to the The terminal gradually slopes downwards, decreasing in height.

Preferably, the extension section gradually slopes downward in a curved line from the section to the end.

Preferably, the blade segments are rounded.

The technical solutions of the present utility model will be clearly and completely described through specific embodiments below. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figure 1, as shown in the figure, an impeller structure is applied to the motor of a brushless vacuum cleaner. A plurality of arc-shaped blades 2 are designed on the lower cover plate 1 of the impeller structure, and the blades 2 are connected to the axis 8 of the lower cover plate 1. , and distributed along the lower cover 1 in an involute fashion. By distributing the blades 2 into an involute structure, the working efficiency of the impeller is improved, and at the same time, the structure runs smoothly, has high working performance, low noise, and high working environment quality.

The blade 2 is connected to the axis 8 of the lower cover plate 1, so that the structure of the entire impeller is relatively compact, the connection stability is good, and the structural strength is high.

On the lower cover plate 1 of the same size, by designing the blade 2 into an arc-shaped structure, the length of the blade 2 is effectively increased and the operation efficiency of the impeller is improved.

The blade 2 is integrally formed on the lower cover 1 , and the blade 2 extends from the axis 8 of the lower cover 1 to the edge of the lower cover 1 . The blade 2 and the lower cover plate 1 can be integrally formed by injection molding. The impeller structure has high strength, good stability, and good performance. While improving the high efficiency of the impeller, it ensures the service life of the impeller and reduces the use of cost. At the same time, loosening and damage between the lower cover plate 1 and the blade 2 is avoided, and the service life of the impeller is improved.

The top of blade 2 is rounded. By rounding the intersection of the two surfaces of the blade 2, the blade 2 as a whole has a streamlined structure, the air intake is smooth, and the work efficiency is high. At the same time, it can reduce the accumulation of dust, ensure the cleanliness inside the impeller, and improve the service life of the impeller.

Please refer to FIG. 2 and FIG. 3 , as shown in the figure, an impeller cover 3 is arranged above the blade 2 , and an air inlet 4 is opened at the center of the impeller cover 3 , and the blade 2 and the impeller cover 3 are in clearance fit. When the impeller structure is working, the external air flows into the impeller through the air inlet 4, and then enters the rear end of the impeller to cool the motor circuit board and winding.

The inner side of the impeller cover 3 opposite to the blade 2 is concaved toward the center to form an arc surface 5. After the blade 2 rotates, the arc surface formed by the outer edge is parallel to the arc surface 5 inside the impeller cover. When the impeller cover 3 is assembled on the top of the blade 2 , The impeller cover 3 and the blade 2 form a clearance fit.

The impeller cover 3 also plays the role of the upper cover in this structure. It forms a closed impeller structure with the lower cover 1 and the blades 2. While reducing the volume of the motor, it also ensures the working efficiency of the impeller and meets the needs of the motor. Small size, high speed requirements.

The blade 2 can be divided into two sections according to the height change, which are respectively the connection section 6 and the extension section 7. The connection section 6 is connected to the axis 8 of the lower cover plate 1. Slope downwards, gradually decreasing in height. This structural form reduces the load carried by the blades while ensuring the air intake of the impeller, and improves the working efficiency. The tight fit between the impeller cover 3 and the blade 2 is convenient, the compactness of the impeller structure is ensured, and the overall volume of the impeller structure is reduced.

The extension section 7 gradually inclines downwards from the section to the end, and the top of the blade 2 is in an arc-shaped structure, and can also be a straight-line structure, etc., which is not limited in detail.

The rounded corners of the blade 2 sections make the connection of the two sections structurally consistent.

The utility model discloses an impeller structure. The impeller structure comprises a lower cover plate and a plurality of arc-shaped blades designed on the lower cover plate, and the connecting shaft centers of the blades are distributed along the lower cover plate in an involute form. The impeller structure is suitable for high-vacuum, high-speed brushless DC vacuum cleaner motors. The impeller structure only includes a lower cover plate and a plurality of arc-shaped blades on it to form a semi-open impeller structure. The impeller structure is relatively small in size and easy to carry; less material is used and the production cost is lower. Moreover, the blades are distributed in an involute type on the lower cover plate. This structural form runs more smoothly, has higher working performance, less energy consumption, lower use cost, and less noise, and the quality of the working environment is higher. Moreover, the blades are connected to the axis of the lower cover plate, so that the structure of the entire impeller is relatively compact, the connection stability is good, and the structural strength is high.

There is an impeller cover above the blade, and the blade and the impeller cover are in clearance fit. The impeller cover also acts as an upper cover in this structure, and forms a closed impeller structure with the lower cover and the blades, which reduces the volume of the motor. At the same time, it ensures the working efficiency of the impeller and meets the needs of the motor with small volume and high speed.

The blade and the lower cover plate are integrally formed, with high structural strength and good performance, which avoids loose damage between the cover plate and the blade, and improves the service life of the impeller.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. a blade wheel structure, is applied to, on brushless motor of dust collector, it is characterized in that, designs a plurality of arc shaped blades on the lower cover plate of described blade wheel structure, and blade connects axle center and is evolvent type distribution along lower cover plate.

2. blade wheel structure as claimed in claim 1, is characterized in that, described blade is shaped on described lower cover plate, and described blade extends to the edge of lower cover plate from the place, axle center of lower cover plate.

3. blade wheel structure as claimed in claim 1, is characterized in that, the top rounding of described blade.

4. blade wheel structure as claimed in claim 1, is characterized in that, described blade top is provided with impeller chimney, and the center of described impeller chimney offers intake grill, described blade and described impeller chimney Spielpassung.

5. blade wheel structure as claimed in claim 4, it is characterized in that, the interior side direction center indent that described impeller chimney is relative with described blade forms cambered surface, the cambered surface parallel matched of the cambered surface that after described blade rotation, outer rim forms and described impeller chimney inner side, when described impeller chimney is assembled to behind described blade top, described impeller chimney becomes Spielpassung with described blade.

6. blade wheel structure as claimed in claim 1, it is characterized in that, described blade is divided into two sections by variable height, be respectively linkage section and extension, described linkage section connects the axle center of lower cover plate, the height of described linkage section is consistent, and described extension is downward-sloping gradually to terminal from segmentation place, successively decreases highly gradually.

7. blade wheel structure as claimed in claim 6, is characterized in that, described extension from segmentation place to terminal downward curved inclination gradually.

8. blade wheel structure as claimed in claim 6, is characterized in that, described blade section place rounding.