Fan assembly
By designing the cooling air duct between the aircraft stent and the motor in the fan component, and using the airflow generated by the carpace wheel to cool, the problem of decreased efficiency caused by high temperature and shortevity of the motor achieved a more efficient motor cooling. And stable operation.
Patent Information
- Application Number
- CN202421288110.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-06
AI Technical Summary
When developing large fan vacuum cleaners, the high power of the motor leads to high temperatures in the motor operation, and the lack of effective cooling leads to a sharp drop in temperature rise, affecting the normal use and life of the motor.
A fan component is designed, including the air guide bracket, motor and impeller components. By setting up the first cooling duct and the second cooling duct by setting up the air guide bracket and the motor, the airflow generated by the motor wheel is Cool down.
The cooling of the motor at the same time has improved the cooling efficiency, ensuring the continuous and stable operation of the motor, and extending the life of the motor.
Smart Images
Figure CN222415316U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of motor equipment, and in particular relates to an improved fan component. Background Art
[0002] Brushless motors use semiconductor switching devices to achieve electronic commutation, that is, electronic switching devices are used to replace traditional contact commutators and brushes. They have the advantages of high reliability, no commutation sparks, low mechanical noise, and high speed. They are widely used in automation equipment. When developing large fan vacuum cleaners, it is necessary to increase the motor power because the fan is too large. When the motor power is high, the motor will quickly generate high temperature when it is running. In the absence of cooling conditions, the temperature rise of the motor will cause the efficiency to drop sharply, affecting the normal use of the motor and the life of the motor.
[0003] Therefore, in view of the above technical problems, it is necessary to provide a cooling structure that can effectively reduce the temperature of the motor.
[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content
[0005] The utility model aims to provide a brushless fan assembly, which can solve the problem of rapid temperature rise of the motor.
[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:
[0007] The utility model provides an extension assembly, comprising a bracket assembly, a motor and an impeller assembly, the bracket assembly comprising an air guide bracket and an air hood, the air hood cover being arranged on the air guide bracket, and a cavity being formed between the air hood and the air guide bracket; the motor being mounted on the air guide bracket, and its output shaft extending into the cavity; the impeller assembly comprising a stator impeller and a movable impeller mounted in the cavity, the stator impeller being mounted on the air guide bracket, and the movable impeller being mounted on the output shaft of the motor; wherein a first cooling air duct and a second cooling air duct are formed between the air guide bracket and the motor, the first cooling air duct surrounding the outside of the motor, and the second cooling air duct being connected from the cavity to the inside of the motor.
[0008] In one or more embodiments of the present utility model, the air guide bracket includes an annular bracket body and a mounting portion arranged in the middle of the bracket body, and a plurality of first reinforcing ribs connecting the mounting portion and the side wall of the bracket body, and a first gap is formed between adjacent first reinforcing ribs. The motor is installed on the mounting portion, and the bracket body includes an annular wall located in the middle and protruding upward, and the first cooling air duct is formed between the inner wall of the annular wall and the outer wall of the motor.
[0009] In one or more embodiments of the present utility model, the mounting portion includes a base and a plurality of first support columns protruding from the base, the base is connected to the first reinforcing rib, the motor is supported on the first support column, and a second gap connected to the first gap is formed between the motor and the base, and the area above the first gap pointing to the second gap constitutes the second cooling air duct.
[0010] In one or more embodiments of the present invention, a plurality of wind guiding surfaces inclined toward the inside of the motor are formed on the base.
[0011] In one or more embodiments of the present invention, the mounting portion further includes two second support columns protruding from the base, and the stator is mounted on the air guide bracket via the second support columns.
[0012] In one or more embodiments of the present invention, the second support column is symmetrically arranged on the mounting portion.
[0013] In one or more embodiments of the present invention, an even number of the first support columns protrude from the mounting portion, and the first support columns are symmetrically distributed on both sides of the straight line where the second support columns are located.
[0014] In one or more embodiments of the present invention, a plurality of second reinforcing ribs are evenly distributed on the outer wall of the bracket body.
[0015] In one or more embodiments of the present utility model, the stator includes a first surface and a second surface arranged opposite to each other, and a plurality of first blades and second blades protrude from the first surface and the second surface respectively, the first blades are distributed in a clockwise / counterclockwise direction, the second blades are distributed in the opposite direction to the first blades, and the first surface faces the wind guide bracket.
[0016] In one or more embodiments of the present invention, the second blade is annular and protrudes from the edge of the second surface, and the impeller is arranged at the center of the annular ring and its edge is close to the inner circle of the annular ring.
[0017] Compared with the prior art, the fan assembly of the utility model is provided with a second cooling air duct for cooling the inside of the motor, and a first cooling air duct for cooling the outside of the motor. The motor is cooled from the inside and outside at the same time to improve the cooling efficiency and ensure the continuous and stable operation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of a fan assembly in one embodiment of the utility model;
[0020] Figure 2 This is a disassembled diagram of a fan assembly in one embodiment of the utility model;
[0021] Figure 3 This is a schematic diagram of an air guide bracket in one embodiment of the utility model;
[0022] Figure 4 A top view of an air guide bracket in one embodiment of the utility model;
[0023] Figure 5 A partial cross-sectional view of an air guide bracket and a motor in an embodiment of the utility model;
[0024] Figure 6 This is a schematic diagram of the airflow of the fan assembly in one embodiment of the utility model;
[0025] Figure 7 This is a schematic diagram of a stator wheel in one embodiment of the utility model;
[0026] Figure 8 It is a schematic diagram of another angle of the stator impeller in one embodiment of the utility model.
[0027] Description of main reference numerals:
[0028] 10-motor, 20-bracket assembly, 201-cavity, 21-wind guide bracket, 211-bracket body, 2111-second reinforcement rib, 2112-annular wall, 212-mounting portion, 2121-base, 2122-first support column, 2123-wind guide surface, 2124-second support column, 2125-through hole, 213-first reinforcement rib, 214-first gap, 215-second gap, 22-wind cover, 221-air inlet, 30 impeller assembly, 31-fixed impeller, 311-first surface, 312-second surface, 313-first blade, 314-second blade, 32-moving impeller, 321-air inlet, 41-first cooling air duct, 42-second cooling air duct. DETAILED DESCRIPTION
[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0030] like Figure 1-8 As shown, the fan assembly in one embodiment of the utility model includes a motor 10, a bracket assembly 20 and an impeller assembly 30. The bracket assembly 20 includes an air guide bracket 21 and a wind cover 22 which are arranged opposite to each other, and the wind cover 22 is covered on the air guide bracket 21, and a cavity is formed between the two. The motor 10 is fixed on the air guide bracket 21, and its output shaft extends into the cavity. The impeller assembly 30 includes a fixed impeller 31 and a movable impeller 32 which are installed in the cavity, the fixed impeller 31 is installed on the air guide bracket 21, and the movable impeller 32 is installed on the output shaft of the motor 10 and can rotate in the cavity with the rotation of the output of the motor 10. In order to improve the cooling effect of the motor 10, a first cooling air duct 41 and a second cooling air duct 42 are arranged between the air guide bracket 21 and the motor 10, wherein the first cooling air duct 41 surrounds the outside of the motor 10, and the second cooling air duct 42 is connected to the inside of the motor 10 by the cavity.
[0031] According to the fan assembly of this embodiment of the utility model, the impeller 32 forms an airflow in the cavity when rotating with the motor 10. The airflow cools the inside and outside of the motor 10 at the same time through two cooling air ducts, thereby greatly improving the cooling effect to ensure the continuous and stable operation of the motor 10.
[0032] Combination Figure 3-6As shown, the air guide bracket 21 includes an annular bracket body 211, a mounting portion 212 disposed in the middle of the bracket body 211 for mounting the motor 10, and a plurality of first reinforcing ribs 213 connecting the bracket body 211 and the mounting portion 212. A first gap 214 is formed between adjacent first reinforcing ribs 213, and the first gap 214 is an inlet for cooling air. The bracket body 211 includes an annular wall 2112 located in the middle and protruding upward. When the motor 10 is mounted to the mounting portion 212, a first space is formed between the outer wall of the motor 10 and the inner wall of the annular wall 2112, which surrounds the outer periphery of the motor 10, and the first space constitutes the first cooling air duct 41, and the first gap 213 is connected to the first space. The airflow generated by the impeller 32 in the cavity can flow to the first cooling air duct 41 through the first gap 214, and cool the outer peripheral part of the motor 10.
[0033] Continue reading Figure 4 The mounting portion 212 includes a base 2121 and a plurality of first support columns 2122 protruding from the surface of the base 2121. The motor 10 is supported on the first support columns 2122 and mounted on the mounting portion 212 through the first support columns 2122. The base 2121 is fixed to the bracket body 211 through the first reinforcing ribs 213, and a second gap 215 is formed between the motor 10 and the base 2121. Since the interior of the motor 10 is through-connected from top to bottom, the area above the first gap 214 pointing to the second gap 215 constitutes the second cooling air duct 42. When the airflow generated by the rotation of the impeller 32 flows upward through the first gap 214, part of the airflow flows into the interior of the motor 10 through the second cooling air duct 42 to cool the motor 10 from the inside. This further improves the cooling effect.
[0034] like Figure 6 As shown, arrows indicate gas flow directions, wherein the middle upward arrow indicates that airflow passes through the second cooling air duct 42 to cool the inside of the motor 10 , and the upward arrows on both sides indicate that airflow passes through the first cooling air duct 41 to cool the motor 10 from the outside.
[0035] Preferably, a plurality of inclined air guide surfaces 2123 are formed on the base 2121, and the air guide surface 2123 is inclined from one side of the first gap 214 toward the inside of the motor 10 to guide the rotating airflow toward the inside of the motor 10, increase the air intake, and improve the cooling effect. The inclination angle of the air guide surface 2123 is 45°, and of course, it can be set to other angles in other embodiments, which is not limited in this embodiment.
[0036] In a preferred embodiment, a plurality of second reinforcing ribs 2111 protrude from the bracket body 211 to improve the overall strength and stability of the air guide bracket 21 and prevent deformation.
[0037] like Figure 4 As shown, the mounting portion 212 further includes two second support columns 2124 protruding from the base 2121 , and the second support columns 2124 are used to provide a fixed position for the stator impeller 31 , and the stator impeller 31 is mounted to the air guide bracket 21 via the second support columns 2124 .
[0038] Preferably, two second support columns 2124 are symmetrically arranged on the base 2121. Furthermore, an even number of first support columns 2122 are provided, and are symmetrically arranged on both sides of the straight line where the second support columns 2124 are located. A through hole 2125 through which the output shaft of the power supply machine 10 passes is provided at the center position of the base 2121, and a bearing is built into the through hole 2125. The first support column 2122 and the through hole 2125 have the same spacing, and the second support column 2124 and the through hole 2125 have the same spacing, so that the two groups of support columns are arranged in concentric circles to ensure that the motor 10, the stator impeller 31 and the impeller 32 are coaxial, and the impeller 32 can operate normally.
[0039] like Figure 7 and 8 As shown, the fixed impeller 31 includes a first surface 311 and a second surface 312 arranged opposite to each other, wherein the first surface 311 faces the wind guide bracket 21. A plurality of first blades 313 and second blades 314 protrude from the first surface 311 and the second surface 312, respectively, wherein the first blades 313 are distributed circumferentially in a clockwise or counterclockwise direction, while the second blades 314 are distributed in the opposite direction, so the airflow generated by the impeller 32 when rotating flows toward the first gap 214 after passing through the gaps between the second blades 314 and the gaps between the first blades 313. This design can increase wind pressure and wind speed, and enhance the cooling effect.
[0040] The second blades 314 are protruding in a circular shape at the edge of the second surface 312. The impeller 32 is arranged on one side of the second surface 312 and is located at the center of the circular ring formed by the second blades 314, and its edge is close to the inner circle of the circular ring, so as to improve the airflow guiding effect, so that the airflow generated by the rotation of the impeller 32 can directly flow to the gaps between the second blades 314. In addition, the distribution direction of the blades in the impeller 32 is also opposite to the distribution direction of the second blades 314, so as to further enhance the wind pressure and improve the cooling effect.
[0041] In this embodiment, the bracket assembly 20 also includes a wind cover 22, which is arranged opposite to the air guide bracket 21 and fixed thereto. A cavity is formed between the air guide bracket 21 and the wind cover 22. An air inlet 221 is provided on the wind cover 22. External air is sucked into the cavity through the air inlet 221 when the impeller 32 rotates.
[0042] Preferably, the air inlet 221 is opened in the middle position of the wind cover 22 , and correspondingly, the air inlet 321 is also opened in the center position of the impeller 32 , and the air inlet 321 is coaxial with the air inlet 221 .
[0043] In this embodiment, since the area of the stator impeller 31 is relatively large, if it is designed to be integrally formed with the air guide bracket 21, it may be deformed or not fully filled during injection molding, and even affect the normal operation of the motor in the later stage. Therefore, preferably, the stator impeller 31 and the air guide bracket 21 are produced and then installed in a split structure.
[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A fan assembly, characterized in that: include: A bracket assembly, comprising an air guide bracket and an air cover, wherein the air cover is disposed on the air guide bracket, and a cavity is formed between the air cover and the air guide bracket; A motor, mounted on the air guide bracket, with an output shaft extending into the cavity; An impeller assembly, comprising a fixed impeller and a movable impeller installed in the cavity, wherein the fixed impeller is installed on the air guide bracket, and the movable impeller is installed on the output shaft of the motor; A first cooling air duct and a second cooling air duct are formed between the air guide bracket and the motor, the first cooling air duct surrounds the outside of the motor, and the second cooling air duct is connected from the cavity to the inside of the motor.
2. The fan assembly according to claim 1, characterized in that: The air guide bracket includes an annular bracket body and a mounting portion arranged in the middle of the bracket body, and a plurality of first reinforcing ribs connecting the mounting portion and the side wall of the bracket body, a first gap is formed between adjacent first reinforcing ribs, the motor is installed on the mounting portion, and the bracket body includes an annular wall located in the middle and protruding upward, and the first cooling air duct is formed between the inner wall of the annular wall and the outer wall of the motor.
3. The fan assembly according to claim 2, characterized in that: The mounting portion includes a base and a plurality of first support columns protruding from the base, the base is connected to the first reinforcing rib, the motor is supported on the first support column, and a second gap connecting to the first gap is formed between the motor and the base, and the area above the first gap pointing to the second gap constitutes the second cooling air duct.
4. The fan assembly according to claim 3, characterized in that: The base is formed with a plurality of wind guide surfaces inclined toward the inside of the motor.
5. The fan assembly according to claim 3, characterized in that: The mounting portion further comprises two second support columns protruding from the base, and the stator is mounted on the air guide bracket via the second support columns.
6. The fan assembly according to claim 5, characterized in that: The second supporting columns are symmetrically arranged on the mounting portion.
7. The fan assembly according to claim 6, characterized in that: An even number of the first support columns protrude from the mounting portion, and the first support columns are symmetrically distributed on both sides of the straight line where the second support columns are located.
8. The fan assembly according to claim 2, characterized in that: A plurality of second reinforcing ribs are evenly distributed on the outer wall of the bracket body.
9. The fan assembly according to claim 1, characterized in that: The stator wheel includes a first surface and a second surface that are arranged opposite to each other, and a plurality of first blades and a second blade protrude from the first surface and the second surface respectively. The first blades are distributed in a clockwise / counterclockwise direction, and the second blades are distributed in the opposite direction to the first blades. The first surface faces the wind guide bracket.
10. The fan assembly according to claim 9, characterized in that: The second blade is annular and protrudes from the edge of the second surface. The impeller is arranged at the center of the annular ring and its edge is close to the inner circle of the annular ring.