US20140154109A1 - Fan system - Google Patents

Fan system Download PDF

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Publication number
US20140154109A1
US20140154109A1 US13/844,970 US201313844970A US2014154109A1 US 20140154109 A1 US20140154109 A1 US 20140154109A1 US 201313844970 A US201313844970 A US 201313844970A US 2014154109 A1 US2014154109 A1 US 2014154109A1
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United States
Prior art keywords
mounting
mounting bracket
fan system
cavity
control box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/844,970
Inventor
Songfa TANG
Xiao Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongshan Broad Ocean Motor Co Ltd
Original Assignee
Zhongshan Broad Ocean Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongshan Broad Ocean Motor Co Ltd filed Critical Zhongshan Broad Ocean Motor Co Ltd
Assigned to ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD. reassignment ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIU, XIAO, TANG, SONGFA
Publication of US20140154109A1 publication Critical patent/US20140154109A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/162—Double suction pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/068—Mechanical details of the pump control unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/15—Mounting arrangements for bearing-shields or end plates

Definitions

  • the invention relates to a fan system in combination with a DC brushless motor.
  • a first method is a single arm installation method, that is, a bracket is arranged on one side to install the motor and the wind wheel.
  • a second method is a double arm support installation method. Although it operates steadily, the system is complicated in structure.
  • the fan system is supported by two ends.
  • a hollow shaft is arranged on the rotor assembly and a wire passes through a center of the hollow shaft. The method has defects of much complicated manufacturing procedure and higher cost.
  • a fan system in combination with a DC brushless motor.
  • the DC brushless motor comprises: a shaft, a base, a stator assembly, a rotor assembly, a control box comprising a second cavity, and a circuit board.
  • the fan system comprises: a blower housing, the blower housing comprising: a first cavity, an upper end surface, a lower end surface, and an air outlet; a wind wheel, the wind wheel comprising a connecting plate; a first mounting bracket, the first mounting bracket comprising: an outer side, an inner side; and a second mounting bracket, the second mounting bracket comprising: an outer side, and an inner side.
  • the first cavity is arranged inside the blower housing.
  • a first air inlet is disposed on the upper end surface of the blower housing.
  • a second air inlet is disposed on the lower end surface of the blower housing. The first air inlet and the second air inlet are communicated with the cavity.
  • the air outlet is communicated with the cavity.
  • the circuit board is arranged in the second cavity of the control box.
  • the stator assembly is disposed on the base.
  • the rotor assembly is disposed on a middle part of the shaft.
  • the stator assembly is arranged inside the rotor assembly.
  • the base is provided with a second bearing. One end of the shaft is disposed on the second bearing.
  • the connecting plate in disposed on a middle part of the wind wheel outside the rotor assembly.
  • the first mounting bracket is arranged at the first air inlet.
  • the outer side of the first mounting bracket is connected to the upper end surface.
  • the inner side of the first mounting bracket is provided with a first bearing.
  • the other end of the shaft is disposed on the first bearing.
  • the second mounting bracket is arranged at the second air inlet.
  • the outer side of the second mounting bracket is connected to the lower end surface.
  • the inner side of the second mounting bracket is connected to the control box.
  • the base and the control box are arranged together and positioned in the first cavity.
  • the inner side of the second mounting bracket is connected to the control box.
  • control box is arranged outside the blower housing.
  • the circuit board is arranged inside the control box and is in electric connection with the stator assembly in the first cavity through a wire.
  • the inner side of the second mounting bracket is connected to a bottom of the base.
  • the erection loop is attached to the bottom of the base and is fixed on the bottom of the base via a screw.
  • a flange plate is fixed outside the rotor assembly.
  • a center hole is disposed on the connecting plate in the middle of the wind wheel.
  • the rotor assembly is disposed in the center hole.
  • the flange plate is connected to the connecting plate via a screw.
  • the first mounting bracket comprises a plurality of first mounting legs.
  • the first mounting legs are distributed around the first air inlet.
  • One end of each of the first mounting legs are connected to the upper end surface; and the other end of each of the first mounting legs are connected to each other to form a third cavity.
  • the first bearing is arranged inside the third cavity.
  • the second mounting bracket comprises a plurality of second mounting legs.
  • the second mounting legs are distributed around the second air inlet.
  • One end of each of the second mounting legs is connected to the lower end surface; and the other end of each of the second mounting legs is connected to an erection loop.
  • the erection loop is attached to the control box and is fixed on the control box by a screw.
  • an end part of the first mounting leg is provided with a strip groove, a screw passes through the strip groove and fixes the first mounting leg on the blower housing.
  • FIG. 1 is a stereogram of a fan system from one angle in accordance with one embodiment of the invention
  • FIG. 2 is a stereogram of a fan system from another angle in accordance with one embodiment of the invention.
  • FIG. 3 is an exploded view of a fan system from one angle in accordance with one embodiment of the invention.
  • FIG. 4 is an exploded view of a fan system from another angle in accordance with one embodiment of the invention.
  • FIG. 5 is an assembly stereogram of a wind wheel, a motor, and a first mounting bracket from one angle in accordance with one embodiment of the invention
  • FIG. 6 is an exploded view drawing of the invention after the assembly of the wind wheel, the motor and the first from mounting bracket from another angle;
  • FIG. 7 is a front view of a fan system in accordance with one embodiment of the invention.
  • FIG. 8 is a cross sectional view taken from line A-A of FIG. 7 ;
  • FIG. 9 is an enlarged view of Part B-B of FIG. 8 .
  • a fan system in combination with a DC brushless motor.
  • the fan system comprises: a blower housing 1 , a wind wheel 3 , a first mounting bracket 4 , and a second mounting bracket 5 .
  • the blower housing 1 is provided with a cavity 11 inside.
  • a first air inlet 14 is arranged on an upper end surface 12 of the blower housing 1 .
  • a second air inlet 15 is arranged on a lower end surface 13 of the blower housing 1 .
  • the first air inlet 14 and the second air inlet 15 are communicated with the cavity 11 .
  • An air outlet 16 is arranged on the blower housing 1 and communicated with the cavity 11 .
  • the DC brushless motor 2 comprises: a shaft 21 , a base 22 , a stator assembly 23 , a rotor assembly 24 , a control box 25 , and a circuit board 26 .
  • the circuit board 26 is arranged in a cavity of the control box 25 .
  • the stator assembly 23 is arranged on the base 22 .
  • the rotor assembly 24 is arranged on a middle part of the shaft 21 .
  • the stator assembly 23 is arranged inside the rotor assembly 24 .
  • One end of the shaft 21 is arranged on a second bearing 7 of the base 22 .
  • a connecting plate 31 in arranged in a middle of the wind wheel 3 outside the rotor assembly 24 .
  • the first mounting bracket 4 is arranged at the first air inlet 14 .
  • An outer side of the first mounting bracket 4 is connected to the upper end surface 12 .
  • An inner side of the first mounting bracket 4 is provided with a first bearing 6 .
  • the other end of the shaft 21 is arranged on the first bearing 6 .
  • the second mounting bracket 5 is arranged at the second air inlet 15 .
  • An outer side of the second mounting bracket 5 is connected to the lower end surface 13 .
  • An inner side of the second mounting bracket 5 is connected to the control box 25 .
  • the base 22 and the control box 25 are arranged together and positioned in the first cavity 11 .
  • the inner side of the second mounting bracket 5 is connected to the control box 25 .
  • a flange plate 241 is fixed outside the rotor assembly 24 .
  • a center hole is disposed on the connecting plate 31 in the middle of the wind wheel 3 .
  • the rotor assembly 24 is disposed in the center hole.
  • the flange plate 241 is connected to the connecting plate 31 via a screw.
  • the first mounting bracket 4 comprises a plurality of first mounting legs 41 .
  • the first mounting legs 41 are distributed around the first air inlet 14 .
  • One end of each of the first mounting legs 41 are connected to the upper end surface 12 ; and the other end of each of the first mounting legs 41 are connected to each other to form a third cavity 42 .
  • the first bearing 6 is arranged inside the third cavity 42 .
  • the second mounting bracket 5 comprises a plurality of second mounting legs 51 .
  • the second mounting legs 51 are distributed around the second air inlet 15 .
  • One end of each of the second mounting legs 51 is connected to the lower end surface 13 ; and the other end of each of the second mounting legs 51 are connected to an erection loop 52 .
  • the erection loop 52 is attached to the control box 25 and is fixed on the control box 25 by a screw.
  • An end part of the first mounting leg 41 is provided with a strip groove 43 .
  • a screw passes through the strip groove 43 and fixes the first mounting leg 41 on the blower housing 1 .
  • the control box 25 is arranged outside the blower housing 1 .
  • the circuit board 26 is arranged inside the control box 25 and is in electric connection with the stator assembly 23 in the first cavity 11 through a wire.
  • the inner side of the second mounting bracket 5 is connected to a bottom of the base 22 .
  • the erection loop 52 is attached to the bottom of the base 22 and is fixed on the bottom of the base via a screw.
  • the fan system in combination with a DC brushless motor operates in a double-arm support mode.
  • the fan system is advantageous in a steady operation, powerful driving force, simple structure, simple manufacturing technology, and low manufacturing cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A fan system in combination with a DC brushless motor. The DC brushless motor includes: a shaft, a base, a stator assembly, a rotor assembly, a control box including a second cavity, and a circuit board. The fan system includes: a blower housing, a wind wheel, a first mounting bracket, and a second mounting bracket. The first mounting bracket is arranged at a first air inlet. The outer side of the first mounting bracket is connected to the upper end surface. The inner side of the first mounting bracket is provided with a first bearing, and the other end of the shaft is disposed on the first bearing. The second mounting bracket is arranged at a second air inlet. The outer side of the second mounting bracket is connected to the lower end surface.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • Pursuant to 35 U.S.C. §119 and the Paris Convention Treaty, this application claims the benefit of Chinese Patent Application No. 201220650812.7 filed Nov. 30, 2012, the contents of which are incorporated herein by reference. Inquiries from the public to applicants or assignees concerning this document or the related applications should be directed to: Matthias Scholl P. C., Attn.: Dr. Matthias Scholl Esq., 14781 Memorial Drive, Suite 1319, Houston, Tex. 77079.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The invention relates to a fan system in combination with a DC brushless motor.
  • 2. Description of the Related Art
  • Two typical methods are employed to assemble a motor and a wind wheel of a fan system. A first method is a single arm installation method, that is, a bracket is arranged on one side to install the motor and the wind wheel. However, for a high power blower and a heavy wind wheel, a supporting system has a violent vibration and a poor stability. A second method is a double arm support installation method. Although it operates steadily, the system is complicated in structure. The fan system is supported by two ends. A hollow shaft is arranged on the rotor assembly and a wire passes through a center of the hollow shaft. The method has defects of much complicated manufacturing procedure and higher cost.
    • SUMMARY OF THE INVENTION
  • In view of the above-described problems, it is one objective of the invention to provide a fan system in combination with a DC brushless motor that has advantages of steady operation, powerful driving force, simple structure, simple manufacturing technology and low manufacturing cost.
  • To achieve the above objective, in accordance with one embodiment of the invention, there is provided a fan system in combination with a DC brushless motor. The DC brushless motor comprises: a shaft, a base, a stator assembly, a rotor assembly, a control box comprising a second cavity, and a circuit board. The fan system comprises: a blower housing, the blower housing comprising: a first cavity, an upper end surface, a lower end surface, and an air outlet; a wind wheel, the wind wheel comprising a connecting plate; a first mounting bracket, the first mounting bracket comprising: an outer side, an inner side; and a second mounting bracket, the second mounting bracket comprising: an outer side, and an inner side.
  • The first cavity is arranged inside the blower housing. A first air inlet is disposed on the upper end surface of the blower housing. A second air inlet is disposed on the lower end surface of the blower housing. The first air inlet and the second air inlet are communicated with the cavity. The air outlet is communicated with the cavity.
  • The circuit board is arranged in the second cavity of the control box. The stator assembly is disposed on the base. The rotor assembly is disposed on a middle part of the shaft. The stator assembly is arranged inside the rotor assembly. The base is provided with a second bearing. One end of the shaft is disposed on the second bearing.
  • The connecting plate in disposed on a middle part of the wind wheel outside the rotor assembly.
  • The first mounting bracket is arranged at the first air inlet. The outer side of the first mounting bracket is connected to the upper end surface. The inner side of the first mounting bracket is provided with a first bearing. The other end of the shaft is disposed on the first bearing.
  • The second mounting bracket is arranged at the second air inlet. The outer side of the second mounting bracket is connected to the lower end surface. The inner side of the second mounting bracket is connected to the control box.
  • In a class of this embodiment, the base and the control box are arranged together and positioned in the first cavity. The inner side of the second mounting bracket is connected to the control box.
  • In a class of this embodiment, the control box is arranged outside the blower housing. The circuit board is arranged inside the control box and is in electric connection with the stator assembly in the first cavity through a wire. The inner side of the second mounting bracket is connected to a bottom of the base. The erection loop is attached to the bottom of the base and is fixed on the bottom of the base via a screw.
  • In a class of this embodiment, a flange plate is fixed outside the rotor assembly. A center hole is disposed on the connecting plate in the middle of the wind wheel. The rotor assembly is disposed in the center hole. The flange plate is connected to the connecting plate via a screw.
  • In a class of this embodiment, the first mounting bracket comprises a plurality of first mounting legs. The first mounting legs are distributed around the first air inlet. One end of each of the first mounting legs are connected to the upper end surface; and the other end of each of the first mounting legs are connected to each other to form a third cavity. The first bearing is arranged inside the third cavity.
  • In a class of this embodiment, the second mounting bracket comprises a plurality of second mounting legs. The second mounting legs are distributed around the second air inlet. One end of each of the second mounting legs is connected to the lower end surface; and the other end of each of the second mounting legs is connected to an erection loop. The erection loop is attached to the control box and is fixed on the control box by a screw.
  • In a class of this embodiment, an end part of the first mounting leg is provided with a strip groove, a screw passes through the strip groove and fixes the first mounting leg on the blower housing.
  • Advantages of the invention are summarized as follows:
      • 1) The first mounting bracket is arranged at the first air inlet. The outer side of the first mounting bracket is connected to the upper end surface. The inner side of the first mounting bracket is provided with a first bearing. The other end of the shaft is disposed on the first bearing. The second mounting bracket is arranged at the second air inlet. The outer side of the second mounting bracket is connected to the lower end surface. The inner side of the second mounting bracket is connected to the control box. The invention is advantageous in a smooth and steady operation, powerful driving force, shorter shaft, simple structure, and simplified manufacturing procedure. Furthermore, the hollow shaft is not necessitated; external wires are employed to enter into the control box or the base through the second air inlet, thereby simplifying the wiring.
      • 2) A flange plate is fixed outside the rotor assembly. A center hole is disposed on the connecting plate in the middle of the wind wheel. The rotor assembly is disposed in the center hole. The flange plate is connected to the connecting plate via a screw. Thus, the invention has a simple structure and easy installation.
      • 3) The second mounting bracket comprises a plurality of second mounting legs. The second mounting legs are distributed around the second air inlet. One end of each of the second mounting legs is connected to the lower end surface; and the other end of each of the second mounting legs is connected to an erection loop. The erection loop is attached to the control box and is fixed on the control box by a screw. Thus, the invention has a simple structure, is easy to install and convenient to locating the position.
      • 4) The first mounting bracket comprises a plurality of first mounting legs. The first mounting legs are distributed around the first air inlet. One end of each of the first mounting legs are connected to the upper end surface; and the other end of each of the first mounting legs are connected to each other to form a third cavity. The first bearing is arranged inside the third cavity. Thus, the invention is easy to install and convenient to adjust the position.
    BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention is described hereinbelow with reference to the accompanying drawings, in which:
  • FIG. 1 is a stereogram of a fan system from one angle in accordance with one embodiment of the invention;
  • FIG. 2 is a stereogram of a fan system from another angle in accordance with one embodiment of the invention;
  • FIG. 3 is an exploded view of a fan system from one angle in accordance with one embodiment of the invention;
  • FIG. 4 is an exploded view of a fan system from another angle in accordance with one embodiment of the invention;
  • FIG. 5 is an assembly stereogram of a wind wheel, a motor, and a first mounting bracket from one angle in accordance with one embodiment of the invention;
  • FIG. 6 is an exploded view drawing of the invention after the assembly of the wind wheel, the motor and the first from mounting bracket from another angle;
  • FIG. 7 is a front view of a fan system in accordance with one embodiment of the invention;
  • FIG. 8 is a cross sectional view taken from line A-A of FIG. 7; and
  • FIG. 9 is an enlarged view of Part B-B of FIG. 8.
    •  DETAILED DESCRIPTION OF THE EMBODIMENTS
  • For further illustrating the invention, experiments detailing a fan system in combination with a DC brushless motor are described below. It should be noted that the following examples are intended to describe and not to limit the invention.
    • Example 1
  • As shown in FIGS. 1-9, a fan system in combination with a DC brushless motor. The fan system comprises: a blower housing 1, a wind wheel 3, a first mounting bracket 4, and a second mounting bracket 5. The blower housing 1 is provided with a cavity 11 inside. A first air inlet 14 is arranged on an upper end surface 12 of the blower housing 1. A second air inlet 15 is arranged on a lower end surface 13 of the blower housing 1. The first air inlet 14 and the second air inlet 15 are communicated with the cavity 11. An air outlet 16 is arranged on the blower housing 1 and communicated with the cavity 11. The DC brushless motor 2 comprises: a shaft 21, a base 22, a stator assembly 23, a rotor assembly 24, a control box 25, and a circuit board 26. The circuit board 26 is arranged in a cavity of the control box 25. The stator assembly 23 is arranged on the base 22. The rotor assembly 24 is arranged on a middle part of the shaft 21. The stator assembly 23 is arranged inside the rotor assembly 24. One end of the shaft 21 is arranged on a second bearing 7 of the base 22. A connecting plate 31 in arranged in a middle of the wind wheel 3 outside the rotor assembly 24.
  • The first mounting bracket 4 is arranged at the first air inlet 14. An outer side of the first mounting bracket 4 is connected to the upper end surface 12. An inner side of the first mounting bracket 4 is provided with a first bearing 6. The other end of the shaft 21 is arranged on the first bearing 6. The second mounting bracket 5 is arranged at the second air inlet 15. An outer side of the second mounting bracket 5 is connected to the lower end surface 13. An inner side of the second mounting bracket 5 is connected to the control box 25.
  • The base 22 and the control box 25 are arranged together and positioned in the first cavity 11. The inner side of the second mounting bracket 5 is connected to the control box 25.
  • A flange plate 241 is fixed outside the rotor assembly 24. A center hole is disposed on the connecting plate 31 in the middle of the wind wheel 3. The rotor assembly 24 is disposed in the center hole. The flange plate 241 is connected to the connecting plate 31 via a screw.
  • The first mounting bracket 4 comprises a plurality of first mounting legs 41. The first mounting legs 41 are distributed around the first air inlet 14. One end of each of the first mounting legs 41 are connected to the upper end surface 12; and the other end of each of the first mounting legs 41 are connected to each other to form a third cavity 42. The first bearing 6 is arranged inside the third cavity 42.
  • The second mounting bracket 5 comprises a plurality of second mounting legs 51. The second mounting legs 51 are distributed around the second air inlet 15. One end of each of the second mounting legs 51 is connected to the lower end surface 13; and the other end of each of the second mounting legs 51 are connected to an erection loop 52. The erection loop 52 is attached to the control box 25 and is fixed on the control box 25 by a screw.
  • An end part of the first mounting leg 41 is provided with a strip groove 43. A screw passes through the strip groove 43 and fixes the first mounting leg 41 on the blower housing 1.
    • Example 2
  • Based on the example 1, the following technical schemes are added: the control box 25 is arranged outside the blower housing 1. The circuit board 26 is arranged inside the control box 25 and is in electric connection with the stator assembly 23 in the first cavity 11 through a wire. The inner side of the second mounting bracket 5 is connected to a bottom of the base 22. The erection loop 52 is attached to the bottom of the base 22 and is fixed on the bottom of the base via a screw.
  • The fan system in combination with a DC brushless motor operates in a double-arm support mode. Thus, the fan system is advantageous in a steady operation, powerful driving force, simple structure, simple manufacturing technology, and low manufacturing cost.
  • While particular embodiments of the invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from the invention in its broader aspects, and therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims (15)

The invention claimed is:
1. A fan system in combination with a DC brushless motor (2), the DC brushless motor (2) comprising: a shaft (21), a base (22), a stator assembly (23), a rotor assembly (24), a control box (25) comprising a second cavity, and a circuit board (26); the fan system comprising:
a) a blower housing (1), the blower housing (1) comprising: a first cavity (11), an upper end surface (12), a lower end surface (13), and an air outlet (16);
b) a wind wheel (3), the wind wheel (3) comprising a connecting plate (31);
c) a first mounting bracket (4), the first mounting bracket (4) comprising: an outer side, an inner side; and
d) a second mounting bracket (5), the second mounting bracket (5) comprising: an outer side, and an inner side;
wherein
the first cavity (11) is arranged inside the blower housing (1); a first air inlet (14) is disposed on the upper end surface (12) of the blower housing (1); a second air inlet (15) is disposed on the lower end surface (13) of the blower housing (1); the first air inlet (14) and the second air inlet (15) are communicated with the cavity (11); the air outlet (16) is communicated with the cavity (11);
the circuit board (26) is arranged in the second cavity of the control box (25); the stator assembly (23) is disposed on the base (22); the rotor assembly (24) is disposed on a middle part of the shaft (21); the stator assembly (23) is arranged inside the rotor assembly (24); the base (22) is provided with a second bearing (7); one end of the shaft (21) is disposed on the second bearing (7);
the connecting plate (31) in disposed on a middle part of the wind wheel (3) outside the rotor assembly (24);
the first mounting bracket (4) is arranged at the first air inlet (14); the outer side of the first mounting bracket (4) is connected to the upper end surface (12); the inner side of the first mounting bracket (4) is provided with a first bearing (6); the other end of the shaft (21) is disposed on the first bearing (6); and
the second mounting bracket (5) is arranged at the second air inlet (15); the outer side of the second mounting bracket (5) is connected to the lower end surface (13); the inner side of the second mounting bracket (5) is connected to the control box (25).
2. The fan system of claim 1, wherein
the base (22) and the control box (25) are arranged together and positioned in the first cavity (11); and
the inner side of the second mounting bracket (5) is connected to the control box (25).
3. The fan system of claim 1, wherein
the control box (25) is arranged outside the blower housing (1);
the circuit board (26) is arranged inside the control box (25) and is in electric connection with the stator assembly (23) in the first cavity (11) through a wire; and
the inner side of the second mounting bracket (5) is connected to a bottom of the base (22).
4. The fan system of claim 1, wherein
a flange plate (241) is fixed outside the rotor assembly (24);
a center hole is disposed on the connecting plate (31) in the middle of the wind wheel (3); the rotor assembly (24) is disposed in the center hole; and
the flange plate (241) is connected to the connecting plate (31) via a screw.
5. The fan system of claim 2, wherein
a flange plate (241) is fixed outside the rotor assembly (24);
a center hole is disposed on the connecting plate (31) in the middle of the wind wheel (3); the rotor assembly (24) is disposed in the center hole; and
the flange plate (241) is connected to the connecting plate (31) via a screw.
6. The fan system of claim 3, wherein
a flange plate (241) is fixed outside the rotor assembly (24);
a center hole is disposed on the connecting plate (31) in the middle of the wind wheel (3); the rotor assembly (24) is disposed in the center hole; and
the flange plate (241) is connected to the connecting plate (31) via a screw.
7. The fan system of claim 4, wherein
the first mounting bracket (4) comprises a plurality of first mounting legs (41);
the first mounting legs (41) are distributed around the first air inlet (14);
one end of each of the first mounting legs (41) are connected to the upper end surface (12);
the other end of each of the first mounting legs (41) are connected to each other to form a third cavity (42); and
the first bearing (6) is arranged inside the third cavity (42).
8. The fan system of claim 5, wherein
the first mounting bracket (4) comprises a plurality of first mounting legs (41);
the first mounting legs (41) are distributed around the first air inlet (14);
one end of each of the first mounting legs (41) are connected to the upper end surface (12);
the other end of each of the first mounting legs (41) are connected to each other to form a third cavity (42); and
the first bearing (6) is arranged inside the third cavity (42).
9. The fan system of claim 6, wherein
the first mounting bracket (4) comprises a plurality of first mounting legs (41);
the first mounting legs (41) are distributed around the first air inlet (14);
one end of each of the first mounting legs (41) are connected to the upper end surface (12);
the other end of each of the first mounting legs (41) are connected to each other to form a third cavity (42); and
the first bearing (6) is arranged inside the third cavity (42).
10. The fan system of claim 4, wherein
the second mounting bracket (5) comprises a plurality of second mounting legs (51);
the second mounting legs (51) are distributed around the second air inlet (15);
one end of each of the second mounting legs (51) is connected to the lower end surface (13);
the other end of each of the second mounting legs (51) are connected to an erection loop (52); and
the erection loop (52) is attached to the control box (25) and is fixed on the control box (25) by a screw.
11. The fan system of claim 5, wherein
the second mounting bracket (5) comprises a plurality of second mounting legs (51);
the second mounting legs (51) are distributed around the second air inlet (15);
one end of each of the second mounting legs (51) is connected to the lower end surface (13);
the other end of each of the second mounting legs (51) are connected to an erection loop (52); and
the erection loop (52) is attached to the control box (25) and is fixed on the control box (25) by a screw.
12. The fan system of claim 6, wherein
the second mounting bracket (5) comprises a plurality of second mounting legs (51);
the second mounting legs (51) are distributed around the second air inlet (15);
one end of each of the second mounting legs (51) is connected to the lower end surface (13);
the other end of each of the second mounting legs (51) are connected to an erection loop (52); and
the erection loop (52) is attached to the control box (25) and is fixed on the control box (25) by a screw.
13. The fan system of claim 7, wherein
an end part of the first mounting leg (41) is provided with a strip groove (43); and
a screw passes through the strip groove (43) and fixes the first mounting leg (41) on the blower housing (1).
14. The fan system of claim 8, wherein
an end part of the first mounting leg (41) is provided with a strip groove (43); and
a screw passes through the strip groove (43) and fixes the first mounting leg (41) on the blower housing (1).
15. The fan system of claim 9, wherein
an end part of the first mounting leg (41) is provided with a strip groove (43); and
a screw passes through the strip groove (43) and fixes the first mounting leg (41) on the blower housing (1).
US13/844,970 2012-11-30 2013-03-16 Fan system Abandoned US20140154109A1 (en)

Applications Claiming Priority (2)

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CN201220650812.7 2012-11-30
CN201220650812.7U CN202971241U (en) 2012-11-30 2012-11-30 Fan system driven by brushless outer rotor motor

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CN (1) CN202971241U (en)
CA (1) CA2828317C (en)
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CN109936256A (en) * 2017-12-19 2019-06-25 蔡应麟 The brushless motor structure of kitchen ventilator wind wheel is improved
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EP2738918A2 (en) 2014-06-04
CA2828317C (en) 2016-02-16
CA2828317A1 (en) 2014-05-30
MX2013012491A (en) 2014-05-30
CN202971241U (en) 2013-06-05
EP2738918A3 (en) 2017-09-13

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