CN220791569U - A movable vane wheel structure for dust catcher BLDC motor - Google Patents

Abstract

The utility model discloses a movable impeller structure for a BLDC motor of a dust collector, which comprises an upper sheet, a lower sheet and blades, wherein an air inlet is formed in the middle of the upper sheet, the lower sheet is positioned below the upper sheet, a connecting hole is formed in the middle of the lower sheet, a plurality of blades are arranged between the lower sheet and the upper sheet, channels with openings at two ends are formed between adjacent blades, step surfaces are arranged on the blades, the step surfaces are connected with the lower sheet, and one end of each blade, which is close to the air inlet, extends out of the edge of the upper sheet. Compared with the prior art, the utility model can reduce the volume of the motor, is convenient to carry, improves the performance of the motor, reduces the energy consumption, reduces the working noise and improves the environmental quality while ensuring the high rotating speed of the motor.

Description

A movable vane wheel structure for dust catcher BLDC motor

Technical Field

The utility model belongs to the technical field of cleaning appliances, and particularly relates to a movable impeller structure for a BLDC motor of a dust collector.

Background

The motor of the dust collector is a core component of the dust collector and is generally composed of two parts, namely a motor part and a fan part, and the motor of the dust collector has high requirements on the rotating speed, which is generally 20000-30000 revolutions per minute, so that the motor of the conventional dust collector generally adopts a series-excited dust collector motor and a small direct current dust collector motor. The motor of the series excited dust collector and the motor of the small direct current dust collector are both brush motors, the rotating speed is 20000-40000, and the rotating speed can meet the requirements of the motor of the dust collector, but the brush motors have large volume, large fan, large load and high noise of the motor.

The impeller of traditional series excitation dust catcher motor is aluminium system impeller, and it is closed impeller structure, generally includes upper cover plate, lower apron, and sets up in upper and lower apron between the blade, and the material all adopts aluminum alloy, and closed impeller's work efficiency is higher, but its preparation degree of difficulty is great, and aluminium system impeller's upper and lower apron and blade are assembled for forming, and the structure is complicated, and upper and lower apron pine takes off easily and damages, and general volume is great, and the quality is heavy, and manufacturing cost is higher, and the noise is great during operation. The semi-open impeller and the open impeller have smaller volumes than the closed impeller, but have lower working efficiency.

In addition, the upper cover plate and the lower cover plate are generally of flat plate structures, the blades are uniformly distributed between the upper cover plate and the lower cover plate, and in order to increase the working efficiency of the impeller, the length of the blades is necessarily increased, so that the area of the upper cover plate and the area of the lower cover plate are required to be increased, and the whole volume of the impeller is increased.

With the development of the electrical industry, the vacuum cleaner motor is gradually developed to high performance, high efficiency and miniaturization, and the brushless direct current motor has the advantages of small volume, low noise, high efficiency, good reliability, strong adaptability and the like, and is increasingly widely applied in the industry.

In order to reduce the whole volume of dust catcher, generally adopt brushless motor to drive, in order to satisfy brushless motor's user demand, generally need make little impeller structure, traditional aluminium system closed impeller no longer is applicable to brushless motor, and traditional impeller structural performance is lower, and the energy consumption is great, and use cost is higher.

Therefore, in view of the above problems, it is necessary to provide a novel impeller structure to meet the use requirement of the brushless motor impeller, reduce the volume of the motor while guaranteeing the high rotation speed of the motor, facilitate carrying, improve the performance of the motor, reduce the energy consumption, reduce the working noise, and improve the environmental quality.

Disclosure of Invention

The movable impeller structure for the BLDC motor of the dust collector provided by the utility model has the advantages that the volume of the motor is reduced while the high rotating speed of the motor is ensured, the motor is convenient to carry, the performance of the motor is improved, the energy consumption is reduced, the working noise is reduced, and the environmental quality is improved.

In order to achieve the above object, the utility model provides a movable vane wheel structure for a BLDC motor of a dust collector, which comprises an upper plate, a lower plate and vanes, wherein an air inlet is formed in the middle of the upper plate, the lower plate is positioned below the upper plate, a connecting hole is formed in the middle of the lower plate, a plurality of vanes are arranged between the lower plate and the upper plate, channels with openings at two ends are formed between adjacent vanes, step surfaces are arranged on the vanes, the step surfaces are connected with the lower plate, and one end of each vane close to the air inlet extends out of the edge of the upper plate.

As a further description of the above technical solution:

the blades are arc-shaped blades.

As a further description of the above technical solution:

the upper sheet, the lower sheet and the blades are integrally formed or assembled.

As a further description of the above technical solution:

the diameter of the upper sheet is larger than that of the lower sheet.

As a further description of the above technical solution:

seven blades are uniformly arranged between the lower sheet and the upper sheet.

As a further description of the above technical solution:

one end of the blade is provided with an inclined plane.

As a further description of the above technical solution:

the connecting hole is detachably connected with a plurality of fixing blocks, and one end, close to the connecting hole, of each fixing block is provided with a limiting protrusion.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. in the utility model, the outer diameter of the upper piece cover is larger than that of the lower piece, the blades are arc-shaped blades, and the blades are obliquely arranged relative to the upper piece and the lower piece, so that the contact area between the blades in the impeller and air is increased, the air in the impeller flows along the direction of the blades, the speed of the air flow is linearly changed, the energy loss is small, the air flow is high, and the material is saved while the vortex flow is eliminated to enhance the suction force and weaken the noise.

2. In the utility model, when the connecting hole is connected with the connecting shaft, the connecting shaft is positioned at the assembling position, so that the limiting protrusion on the fixing block is inserted into the limiting hole on the connecting shaft, and then the fixing block is fixed by using the screw, so that the friction between the connecting position of the lower piece and the connecting shaft is increased, the device is connected more stably, and the slipping condition is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a moving impeller structure for a BLDC motor of a vacuum cleaner.

Fig. 2 is a perspective view of a moving impeller structure for a BLDC motor of a vacuum cleaner.

Fig. 3 is a sectional view of a moving impeller structure for a BLDC motor of a vacuum cleaner.

Fig. 4 is a schematic view of a blade in a rotor wheel structure for a BLDC motor of a vacuum cleaner.

Fig. 5 is a partial cross-sectional view of a lower blade in a impeller structure for a BLDC motor of a vacuum cleaner.

Legend description:

1. loading a piece; 2. blanking; 3. a blade; 4. an air inlet; 5. a connection hole; 6. a channel; 7. a step surface; 8. an inclined plane; 9. a fixed block; 10. and a limit protrusion.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In describing embodiments of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "inner", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-5, the utility model provides a movable impeller structure for a BLDC motor of a vacuum cleaner, comprising an upper plate 1, a lower plate 2 and blades 3, wherein an air inlet 4 is formed in the middle of the upper plate 1, the lower plate 2 is positioned below the upper plate 1, a connecting hole 5 is formed in the middle of the lower plate 2, a plurality of blades 3 are arranged between the lower plate 2 and the upper plate 1, channels 6 with openings at two ends are formed between adjacent blades 3, step surfaces 7 are arranged on the blades 3, the step surfaces 7 are connected with the lower plate 2, and one end of each blade 3, which is close to the air inlet 4, extends out of the edge of the upper plate 1.

The blade 3 is an arc-shaped blade. The arc length of the blade is 79 + -5 degrees, and the radian is R13 + -5.

The upper sheet 1, the lower sheet 2 and the blades 3 are integrally formed or assembled.

The diameter of the upper sheet 1 is larger than the diameter of the lower sheet 2. Specifically, the outer diameter of the upper piece is 36mm, and the outer diameter of the lower piece is 33.5mm.

Seven blades 3 are uniformly arranged between the lower sheet 2 and the upper sheet 1. This number of blades enables the entire motor to have an optimal output power and vacuum level with less noise than other numbers of blades.

One end of the blade 3 has a bevel 8.

The connecting hole 5 is detachably connected with a plurality of fixing blocks 9, and a limiting protrusion 10 is arranged at one end, close to the connecting hole 5, of the fixing blocks 9.

Working principle: the outer diameter of the upper sheet cover is larger than that of the lower sheet, the blades are arc-shaped blades, and the blades are obliquely arranged relative to the upper sheet and the lower sheet, so that the contact area between the blades in the impeller and air is increased, the air in the impeller flows along the direction of the blades, the speed of the air flow is linearly changed, the energy loss is small, the air flow is high, and the material is saved while the vortex flow is eliminated to enhance the suction force and weaken the noise. When connecting hole and connecting axle are connected, like fig. 5, the connecting axle is located the assembly position and makes, and spacing protruding on the fixed block inserts in the spacing downthehole of connecting axle, then uses screw fixation fixed block, just so increases the friction between lower piece and the connecting axle junction, lets the device connect more stable, avoids appearing the condition of skidding.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. A movable impeller structure for dust catcher BLDC motor, its characterized in that includes upper segment (1), lower segment (2) and blade (3), air inlet (4) have been seted up in the centre of upper segment (1), lower segment (2) are located the below of upper segment (1), connecting hole (5) have been seted up in the centre of lower segment (2), lower segment (2) with be provided with a plurality of between upper segment (1) blade (3), adjacent form both ends open-ended passageway (6) between blade (3), be provided with step face (7) on blade (3), step face (7) with lower segment (2) are connected, blade (3) are close to the one end of air inlet (4) extends the edge of upper segment (1), connecting hole (5) department can dismantle and be connected with polylith fixed block (9), fixed block (9) are close to one end setting up spacing arch (10) of connecting hole (5).

2. A moving impeller structure for a BLDC motor of a vacuum cleaner according to claim 1, characterized in that the blades (3) are arc-shaped blades.

3. A movable vane structure for a BLDC motor of a vacuum cleaner according to claim 1, wherein the upper sheet (1), the lower sheet (2) and the vane (3) are integrally formed or assembled.

4. A moving impeller structure for a BLDC motor of a vacuum cleaner according to claim 1, wherein the diameter of the upper plate (1) is larger than the diameter of the lower plate (2).

5. A moving impeller structure for a BLDC motor of a vacuum cleaner according to claim 1, characterized in that seven blades (3) are uniformly arranged between the lower sheet (2) and the upper sheet (1).

6. A moving impeller structure for a BLDC motor of a vacuum cleaner according to claim 1, characterized in that one end of the blade (3) has a bevel (8).