A multi-channel air-guiding brushless motor

Abstract

The present invention discloses a multi-channel air-guiding brushless motor, comprising a housing, a stator assembly, an air intake assembly, and a drive assembly. The housing is provided with a mounting cavity in which the stator assembly is mounted. An air intake assembly is mounted at one end of the housing, and the housing and the air intake assembly are sealed. The air intake assembly is connected to the drive assembly and is used to direct airflow into the housing to form cooling air. The housing also includes a flow splitter assembly that divides the cooling air into multiple cooling flows, which respectively cool the exterior and interior of the stator assembly. The present invention can cool both the outer surface and the interior of the iron core.

Description

Technical Field

[0001] The invention relates to a motor end cover with a new air guide structure, belonging to the field of motors. Background Art

[0002] A vacuum cleaner uses a motor to drive a high-speed fan, creating a partial vacuum within the dust collection chamber. This creates a pressure difference with the outside of the dust collection chamber, generating airflow. Dust is drawn into the dust collection chamber along with the airflow, where it is filtered and retained before being expelled as clean air. Therefore, the motor's structure directly affects the vacuum cleaner's suction power and efficiency, and thus its efficiency.

[0003] The vacuum cleaner motor is the core component of the vacuum cleaner. Most existing vacuum cleaner motors use brushless motors, which have the characteristics of high speed. As the speed increases, the brushless motor generates a lot of heat. At present, when the vacuum cleaner is running with a brushless motor, its air duct only passes through the outer surface of the iron core through the cooperation of the impeller and the guide wheel, and the cooling effect is relatively poor. Summary of the Invention

[0004] An object of the present invention is to address the deficiencies of the prior art and provide a multi-channel air-guiding brushless motor capable of cooling the outer surface and interior of the core.

[0005] In particular, the present invention provides a multi-channel air-guiding brushless motor, comprising a housing, a stator assembly, an air inlet assembly and a drive assembly.

[0006] The housing is provided with an installation cavity in which the stator assembly is installed, an air inlet assembly is installed at one end of the housing, and the housing and the air inlet assembly are sealed;

[0007] The air inlet assembly is connected to the driving assembly and is used to introduce airflow into the casing to form cooling air;

[0008] The housing also includes a diversion component that divides the cooling air into multiple cooling diversions, which act on the outside of the stator component and the inside of the stator component for cooling respectively.

[0009] Preferably, the air inlet assembly includes an air hood and an impeller, the air hood is connected to one end of the casing, and the impeller is arranged in the air hood and connected to the driving assembly.

[0010] Preferably, an air inlet is provided at the center of the wind hood, and the impeller includes a wheel disc, on which an air inlet communicating with the air inlet and a plurality of inclined first guide blades are provided, and the plurality of first guide blades form an air flow inlet and an air flow outlet, and the air flow outlet is provided corresponding to the diversion component.

[0011] Preferably, a first gap is provided between the stator assembly and the side wall of the casing, a second gap is provided between the stator assembly and the inner wall near the air inlet assembly, the diverter assembly directs the first cooling diverter to the first gap, and the diverter assembly directs the second cooling diverter to the second gap.

[0012] Preferably, the diversion components are provided in multiple groups and are arranged around the intersection of the bottom surface and the side wall of the casing.

[0013] Preferably, the diversion component includes a diversion inlet, a first diversion structure and a second diversion structure, and the cooling air entering from the diversion inlet forms the first cooling channel and the second cooling channel through the first diversion structure and the second diversion structure.

[0014] Preferably, the first diversion structure includes a first guide plate, a first baffle and a second baffle arranged on the casing, the first guide plate is inclined and the upward inclined end is connected to the side wall of the casing, the first baffle and the second baffle are arc-shaped plates and are perpendicular to the bottom surface, and a first opening is provided between the first baffle and the second baffle, so that cooling air enters from the diversion inlet and then passes through the first guide plate, the first baffle and the second baffle to the first gap to form a first cooling channel.

[0015] Preferably, the second diversion structure includes a second guide plate, a second baffle and a third baffle arranged on the casing, the second baffle and the third baffle are both arc-shaped plates and perpendicular to the bottom surface, and a second opening is provided between the second baffle and the third baffle, so that the cooling air flows from the diversion inlet through the second guide plate, the second opening between the second baffle and the third baffle to the second gap to form a second cooling channel.

[0016] Preferably, the shunt structure further includes a direct current channel, and the direct current channel is arranged between multiple groups of the shunt components.

[0017] Preferably, the DC channel includes a DC inlet and a DC guide plate, the DC guide plate is inclined and the upward inclined end is connected to the side wall of the casing, and the DC guide plate guides the cooling air entering the DC inlet into the first gap.

[0018] Compared with the prior art, the present invention has achieved the following significant technical effects:

[0019] The present invention provides a first diversion structure and a second diversion structure in the casing, which can divide the cooling air into two parts to cool the stator assembly from the inside to the outside, thereby achieving the purpose of cooling the motor;

[0020] The present invention has a shunt component and a DC channel to cool the stator component at the same time, which greatly improves the cooling speed, extends the service life of the motor, and saves costs;

[0021] The present invention directly arranges the shunt component and the DC channel in the casing, saving space and reducing the size of the motor. According to this structure, the temperature rise of the motor can be reduced by 10-20K. Keeping the temperature rise unchanged can reduce the weight of the iron core or enameled wire and reduce the material consumption.

[0022] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Hereinafter, some specific embodiments of the present invention will be described in detail in an illustrative and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale.

[0024] In the attached figure:

[0025] Figure 1 This is a schematic structural diagram of a multi-channel wind-guiding brushless motor according to one embodiment of the present invention;

[0026] Figure 2 This is a front view of a multi-channel air-guiding brushless motor according to an embodiment of the present invention;

[0027] Figure 3 yes Figure 2 sectional view of

[0028] Figure 4 1 is a schematic structural diagram of a moving impeller of a multi-channel air-guiding brushless motor according to an embodiment of the present invention;

[0029] Figure 5 1 is a top view of a housing of a multi-channel air-guiding brushless motor according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic structural diagram of a housing of a multi-channel air-guiding brushless motor according to an embodiment of the present invention;

[0031] Figure 7 The figure is a rear view of a housing of a multi-channel air-guiding brushless motor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0033] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0034] A multi-channel brushless motor, please refer to Figure 1-Figure 7 , comprising a casing 1, a stator assembly 2, an air inlet assembly 3, a drive assembly 4 and a diversion assembly, wherein the air inlet assembly 3 is fixedly connected to the casing 1, the diversion assembly and the stator assembly 2 are arranged in the casing 1, and the drive assembly 4 is fixedly connected to the air inlet assembly 3 and drives it to rotate, and the airflow enters the casing 1 through the air inlet assembly 3 and the diversion assembly to cool the inside and outside of the stator assembly 2;

[0035] Specifically, see Figure 6 、 Figure 7 The housing 1 includes a side wall 11 and a bottom surface 12 and is cylindrical. The bottom surface 12 of the housing 1 is provided with a through hole 13. An installation cavity is provided in the housing 1 and the stator assembly 2 is installed therein. An air inlet assembly 3 is installed at one end of the housing 1 where the bottom surface 12 is provided. The housing 1 and the air inlet assembly 3 are sealed.

[0036] More specifically, the drive assembly 4 includes a rotating shaft 41, which passes through the stator assembly 2 and is connected to the air inlet assembly 3. The air inlet assembly 3 is used to introduce airflow into the housing 1 to form cooling air. In a specific implementation, since the housing 1 and the air inlet assembly 3 are sealed, there is no air leakage when the airflow is introduced into the housing 1, ensuring the effect of cooling the stator assembly 2 when the airflow enters the housing 1.

[0037] See also Figure 3 、 Figure 5-7 The housing 1 also includes a diversion component that divides the cooling air into multiple cooling diversions, which act on the outside of the stator component 2 and the inside of the stator component for cooling respectively.

[0038] The multi-channel air-guiding brushless motor of the present invention can be used in any brushless motor required for electrical equipment. In a specific implementation of the present invention, when the drive assembly is activated, the rotating shaft drives the air intake assembly to rotate. The rotation of the air intake assembly causes air to enter the air intake assembly to form cooling air. The cooling air then passes through the assembly diversion assembly to cool the exterior and interior of the stator assembly.

[0039] Preferably, the side wall 11 and the bottom surface 12 of the housing 1 are provided with a mounting and positioning assembly 14 for mounting the stator assembly 2 , and the mounting and positioning assembly 14 includes a mounting and positioning plate 141 fixed to the side wall 11 of the housing 1 .

[0040] Preferably, the air inlet assembly 3 includes an air hood 31 and an impeller 32 , the air hood 31 is connected to one end of the casing 1 , and the impeller 32 is disposed in the air hood 31 and connected to the rotating shaft 41 .

[0041] More specifically, a gap 33 is provided between the impeller 32 and the air cover 31 to allow air flow to enter the casing.

[0042] During the specific implementation of the present application, the impeller is connected to the rotating shaft, and the rotating shaft drives the impeller to rotate, so that the airflow enters the air cover and then enters the casing through the impeller.

[0043] Preferably, see Figure 4 An air inlet 34 is provided at the center of the wind cover 31, and the impeller 32 includes a wheel disc 321. The wheel disc 321 is provided with an air inlet 322 communicating with the air inlet 34 and a plurality of inclined first guide blades 323. The plurality of first guide blades 323 form an air flow inlet 324 and an air flow outlet 325, and the air flow outlet 325 is provided corresponding to the diversion component.

[0044] During the specific implementation of the present invention, the air inlet, the air intake, the air flow inlet and the air flow outlet are connected, and the air flows through the air inlet, the air intake, and then through the air flow inlet and the air flow outlet to the diversion component.

[0045] Preferably, see Figure 3 A first gap is provided between the stator assembly 2 and the side wall 11 of the casing 1, and a second gap is provided between the stator assembly 2 and the bottom surface 12. The diverter assembly directs the cooling air into the first gap through the first cooling diverter, and the diverter assembly directs the cooling air into the second gap through the second cooling diverter.

[0046] Preferably, see Figure 5-7 The diversion components are provided in multiple groups and are arranged around the intersection of the bottom surface 12 and the side wall 11 of the housing 1.

[0047] Preferably, the diversion component includes a diversion inlet 5, a first diversion structure 6 and a second diversion structure 7, and the cooling air entering from the diversion inlet forms the first cooling channel 65 and the second cooling channel 74 through the first diversion structure and the second diversion structure.

[0048] Preferably, see Figure 5 、 Figure 6 The first diversion structure 6 includes a first guide plate 61, a first baffle 62 and a second baffle 63 arranged on the casing 1. The first guide plate 61 is inclined and the upward inclined end is connected to the side wall 11 of the casing 1. The first baffle 62 and the second baffle 63 are arc-shaped plates and are perpendicular to the bottom surface 12. A first opening 64 is provided between the first baffle 62 and the second baffle 63, so that cooling air enters from the diversion inlet 6 and then passes through the first opening 64 between the first guide plate 61, the first baffle 62 and the second baffle 63 to the first gap to form a first cooling channel 65.

[0049] Preferably, see Figure 5 、 Figure 6 The second diversion structure 7 includes a second guide plate 71, a second baffle 62 and a third baffle 72 provided on the casing 1. The second baffle 62 and the third baffle 72 are both arc-shaped plates and are perpendicular to the bottom surface 12. A second opening 73 is provided between the second baffle 62 and the third baffle 72, so that cooling air flows from the diversion inlet 5 through the second guide plate 71, the second baffle 62 and the second opening 73 between the third baffle 72 to the second gap to form a second cooling channel 74.

[0050] In a specific implementation of the present application, the first baffle is longer than the second baffle, and the first baffle is located in the air outlet direction of the second baffle. Cooling air is blown to the first baffle along a tangent direction of the second baffle, and then blown to the outside of the stator assembly along the second opening in the arc direction of the first baffle.

[0051] Similarly, the diversion process of the second diversion structure is the same as that of the first diversion structure, and further details will be omitted. The second diversion structure diverts the cooling air to the interior of the stator assembly.

[0052] Preferably, see Figure 5 、 Figure 7 The shunt structure further includes a DC channel 8, which is arranged between multiple groups of the shunt components.

[0053] Preferably, the DC channel 8 includes a DC inlet 81 and a DC guide plate 82, the DC guide plate 82 is inclined and the upward inclined end is connected to the side wall 11 of the casing 1, and the DC guide plate 82 guides the cooling air entering from the DC inlet 81 into the first gap.

[0054] In a specific implementation of the present application, the shunt inlet 5 and the DC inlet 81 have the same shape and size, and are arranged on the edge of the bottom surface 12 of the housing 1 .

[0055] In a specific implementation of the present application, the first guide plate 61 , the second guide plate 71 and the DC guide plate 82 are all identical in shape, size and inclination angle.

[0056] Compared with the prior art, the present invention has achieved the following significant technical effects:

[0057] The present invention provides a first diversion structure and a second diversion structure in the casing, which can divide the cooling air into two parts to cool the stator assembly from the inside to the outside, thereby achieving the purpose of cooling the motor;

[0058] The present invention has a shunt component and a DC channel to cool the stator component at the same time, which greatly improves the cooling speed, extends the service life of the motor, and saves costs;

[0059] The present invention directly arranges the shunt component and the DC channel in the casing, saving space and reducing the size of the motor. According to this structure, the temperature rise of the motor can be reduced by 10-20K. Keeping the temperature rise unchanged can reduce the weight of the iron core or enameled wire and reduce the material consumption.

[0060] At this point, those skilled in the art will recognize that, although a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A multi-channel air-guiding brushless motor, characterized in that: Including housing, stator assembly, air inlet assembly and drive assembly, The housing is provided with an installation cavity in which the stator assembly is installed, an air inlet assembly is installed at one end of the housing, and the housing and the air inlet assembly are sealed; The air inlet assembly is connected to the driving assembly and is used to introduce airflow into the casing to form cooling air; The housing also includes a flow splitter assembly for splitting the cooling air into multiple cooling flows, which are respectively used to cool the outside and inside of the stator assembly; The diversion assembly includes a diversion inlet, a first diversion structure and a second diversion structure, and the cooling air entering from the diversion inlet passes through the first diversion structure and the second diversion structure to form a first cooling channel and a second cooling channel; The first diversion structure includes a first guide plate, a first baffle plate, and a second baffle plate provided on the housing. The first guide plate is inclined and its upwardly inclined end is connected to the side wall of the housing. The first baffle plate and the second baffle plate are arc-shaped plates and are perpendicular to the bottom surface. A first opening is provided between the first baffle plate and the second baffle plate, so that cooling air enters from the diversion inlet and then passes through the first guide plate, the first baffle plate, and the first opening between the second baffle plate to form a first cooling channel in the first gap. The second diversion structure includes a second guide plate, a second baffle and a third baffle arranged on the casing. The second baffle and the third baffle are both arc-shaped plates and are perpendicular to the bottom surface. A second opening is provided between the second baffle and the third baffle, so that the cooling air flows from the diversion inlet through the second guide plate, the second opening between the second baffle and the third baffle to the second gap to form a second cooling channel.

2. The multi-channel air-guiding brushless motor according to claim 1, characterized in that: The air inlet assembly includes an air hood and a moving impeller. The air hood is connected to one end of the casing. The moving impeller is arranged in the air hood and connected to the driving assembly.

3. The multi-channel air-guiding brushless motor according to claim 2, characterized in that: An air inlet is provided at the center of the wind hood, and the impeller includes a wheel disc, on which an air inlet communicating with the air inlet and a plurality of inclined first guide blades are provided, and the plurality of first guide blades form an air flow inlet and an air flow outlet, and the air flow outlet is provided corresponding to the diversion component.

4. The multi-channel air-guiding brushless motor according to claim 1, characterized in that: A first gap is provided between the stator assembly and the side wall of the housing, a second gap is provided between the stator assembly and the bottom surface of the housing, the diverter assembly directs the cooling air into the first gap through the first cooling diverter, and the diverter assembly directs the cooling air into the second gap through the second cooling diverter.

5. The multi-channel air-guiding brushless motor according to claim 4, characterized in that: The diversion components are provided in multiple groups and are arranged around the intersection of the bottom surface and the side wall of the casing.

6. The multi-channel air-guiding brushless motor according to claim 5, characterized in that: The shunt component further includes a DC channel, which is arranged between multiple groups of the shunt components.

7. The multi-channel air-guiding brushless motor according to claim 6, characterized in that: The DC channel includes a DC inlet and a DC guide plate. The DC guide plate is tilted and an upward tilted end is connected to the side wall of the housing. The DC guide plate guides the cooling air entering the DC inlet into the first gap.

Images