Portable miniature brushless ducted fan

Abstract

The utility model provides a portable miniature brushless ducted fan, which belongs to the technical field of fans and comprises an outer shell, an air supply component and a control circuit board. The outer shell is in a hollow tubular shape, and two through holes are formed in the surface of the outer shell. The side air inlets are correspondingly formed in the middle of the outer shell, the ventilating duct is formed between the side air inlets and the top section of the hollow tubular outer shell, the mounting sleeve is mounted at the bottom of the ventilating duct, the turbofan is fixed in the mounting sleeve, and after the turbofan rotates, external air flow enters the ventilating duct through the side air inlets, so that the external air flow enters the ventilating duct through the side air inlets. Air flow enters the flow guide cover installed at the top of the ventilation duct and is sent out through the air outlet formed in the flow guide cover, air supply can be provided through the air outlet, air blowing and cooling are facilitated, the structure is small and exquisite, carrying is convenient, and the air bag can be placed in a pocket to be used at any time when people go out.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a portable miniature brushless ducted fan. Background Technology

[0002] In the sweltering summer, people feel unbearably hot no matter where they go. With the continuous development of technology, electric fans were invented. To make this easy and comfortable cooling tool readily available, many appliance manufacturers added batteries to traditional fans, thus giving rise to portable electric fans. Existing portable fans have a handle for gripping, which is connected to the fan body by screws and fixed to the fan body. However, the handle of this type of portable electric fan is not convenient to adjust; among them, application number "CN202421066969.4"... A portable fan is proposed in this application. It features a connecting shaft in the back cover of the casing, with the outer frame and handle rotatably mounted on the connecting shaft. A locking mechanism secures the outer frame and handle. When adjustment of the handle or outer frame is needed, manual adjustment is possible, allowing for convenient adjustment of both the fan handle and the fan angle. However, a drawback is the relatively large size of this fan, making it unsuitable for carrying in a pocket or bag. Therefore, a miniature brushless ducted fan designed for easy portability is proposed for convenient use when traveling. Utility Model Content

[0003] The purpose of this invention is to provide a portable miniature brushless ducted fan to solve the problem mentioned in the background art that the electric fan is relatively large and cannot be put into a pocket or bag when going out, making it impossible to carry and use it.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a portable miniature brushless ducted fan, comprising a housing, an air delivery assembly, and a control circuit board;

[0005] Wherein: the outer shell is a hollow tubular shape, and two through holes are opened on the surface of the outer shell;

[0006] The air supply assembly includes multiple side air inlets located in the middle of the outer shell. A ventilation duct is formed between the side air inlets and the top section of the hollow tubular outer shell. An installation sleeve is installed at the bottom of the ventilation duct above the side air inlets. A turbine fan is fixedly installed inside the installation sleeve. A flow guide is installed at the top of the ventilation duct, and an air outlet is opened at the top of the flow guide.

[0007] A control circuit board is fixedly installed inside the outer casing. A control switch is installed on the surface of the control circuit board. A charging indicator light is provided on one side of the control switch. The control switch and the charging indicator light are respectively located inside two through holes.

[0008] As a preferred embodiment of the present invention: a battery is installed inside the outer casing at the bottom of the control circuit board, and an end cap is installed at the bottom of the outer casing.

[0009] As a preferred embodiment of this utility model: support columns are installed on both sides of the surface of the control circuit board, and the bottom of the mounting sleeve is in contact with the support columns.

[0010] As a preferred embodiment of this utility model: a charging interface is installed on the back of the control circuit board, and a socket is opened on the surface of the outer shell at the bottom of the side air inlet, with the charging interface corresponding to the socket.

[0011] As a preferred embodiment of this utility model: a clearance hole is provided on one side of the top of the mounting sleeve, and a connecting wire is installed on the surface of the turbine fan, the connecting wire being inserted into the clearance hole.

[0012] As a preferred embodiment of this utility model: the turbine fan and the control circuit board form a closed control circuit with the battery through connecting wires.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) Multiple side air inlets are provided in the middle of the outer shell. A ventilation channel is formed between the side air inlets and the top section of the hollow tubular outer shell. An installation sleeve is installed at the bottom of the ventilation channel to fix the turbine fan in the installation sleeve. When the turbine fan rotates, the external airflow enters the ventilation channel through the multiple side air inlets. The airflow enters the guide shroud installed at the top of the ventilation channel and is sent out through the air outlet opened by the guide shroud. The air outlet can provide air supply, which is convenient for blowing and cooling. Its structure is small and easy to carry. It can be put in a pocket and used at any time when going out.

[0015] (2) A control circuit board is installed inside the outer casing. A control switch is installed on the surface of the control circuit board. The turbine fan is rotated to provide airflow through the control switch. A charging indicator light is provided on one side of the control switch to remind you when charging. The control switch and the charging indicator light are respectively set in two through holes to provide reserved space for installation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the charging interface structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure of the connecting line of this utility model;

[0020] Figure 5 This is a schematic diagram of the square outer shell structure of this utility model.

[0021] In the diagram: 1. Outer shell; 2. Through hole; 3. Air supply assembly; 31. Side air inlet; 32. Ventilation duct; 33. Mounting sleeve; 34. Turbine fan; 35. Air guide; 36. Air outlet; 4. Control circuit board; 41. Control switch; 42. Charging indicator light; 5. Battery; 6. End cap; 7. Support column; 8. Charging interface; 9. Socket; 10. Clearance hole; 11. Connecting wire. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] Please see Figures 1-4 A portable miniature brushless ducted fan includes: a housing 1, an air delivery assembly 3, and a control circuit board 4; the housing 1 is a hollow tube, and two through holes 2 are formed on the surface of the housing 1.

[0025] Please see Figure 2 , Figure 3 , Figure 4 The air supply assembly 3 includes multiple side air inlets 31 located in the middle of the outer shell 1. A ventilation duct 32 is formed between the side air inlets 31 and the top section of the hollow tubular outer shell 1. An installation sleeve 33 is installed at the bottom of the ventilation duct 32 above the side air inlets 31. A turbine fan 34 is fixedly installed inside the installation sleeve 33. A guide shroud 35 is installed at the top of the ventilation duct 32. An air outlet 36 is opened at the top of the guide shroud 35.

[0026] In practical use: Multiple side air inlets 31 are provided in the middle of the outer shell 1. A ventilation channel 32 is formed between the side air inlets 31 and the top section of the hollow tubular outer shell 1. An installation sleeve 33 is installed at the bottom of the ventilation channel 32 to fix the turbine fan 34 in the installation sleeve 33. When the turbine fan 34 rotates, the external airflow enters the ventilation channel 32 through the multiple side air inlets 31. The airflow enters the guide shroud 35 installed at the top of the ventilation channel 32 and is sent out through the air outlet 36 opened in the guide shroud 35. The air outlet 36 can provide air supply, which is convenient for blowing and cooling. Its structure is small and easy to carry. It can be put in a pocket and used at any time when going out.

[0027] Please see Figure 1 , Figure 2 A control circuit board 4 is fixedly installed inside the outer casing 1. A control switch 41 is installed on the surface of the control circuit board 4. A charging indicator light 42 is provided on one side of the control switch 41. The control switch 41 and the charging indicator light 42 are respectively set inside two through holes 2.

[0028] In practical use: A control circuit board 4 is installed inside the outer casing 1. A control switch 41 is installed on the surface of the control circuit board 4. The turbine fan 34 is rotated by the control switch 41 to provide airflow. A charging indicator light 42 is provided on one side of the control switch 41 to remind you when charging. The control switch 41 and the charging indicator light 42 are respectively set in two through holes 2 to provide reserved space for installation.

[0029] Please see Figure 2 The battery 5 is installed inside the housing 1 at the bottom of the control circuit board 4, and the end cap 6 is installed at the bottom of the housing 1.

[0030] In practical use: The battery 5 is installed inside the housing 1 at the bottom of the control circuit board 4. The battery 5 is installed in the housing 1 through the end cover 6 at the bottom. The battery 5 provides power and control for the operation of the turbine fan 34 and the control circuit board 4.

[0031] Please see Figure 2 Support columns 7 are installed on both sides of the surface of the control circuit board 4, and the bottom of the mounting sleeve 33 is in contact with the support columns 7.

[0032] In practical use: support columns 7 are installed on both sides of the surface of the control circuit board 4. When the mounting sleeve 33 is installed inside the ventilation channel 32 inside the outer casing 1, the support columns 7 provide support, making it easy to install the mounting sleeve 33.

[0033] Please see Figure 3 The back of the control circuit board 4 is equipped with a charging interface 8, and the surface of the housing 1 is provided with a socket 9 at the bottom of the side air inlet 31. The charging interface 8 corresponds to the socket 9.

[0034] In practical use: The back of the control circuit board 4 is equipped with a charging interface 8, which corresponds to the socket 9 opened on the surface of the housing 1, so that an external charger can be connected to the charging interface 8 through the socket 9.

[0035] Please see Figure 4 A clearance hole 10 is provided on one side of the top of the mounting sleeve 33, and a connecting wire 11 is installed on the surface of the turbine fan 34. The connecting wire 11 is inserted inside the clearance hole 10.

[0036] In practical use: A clearance hole 10 is provided on one side of the top of the mounting sleeve 33, and the connecting wire 11 connected to the surface of the turbine fan 34 is inserted into the clearance hole 10 to provide space for the connecting wire 11 to run.

[0037] Please see Figure 2 , Figure 4 The turbine fan 34 and the control circuit board 4 form a closed control circuit with the battery 5 via the connecting wire 11.

[0038] In practical use: the turbine fan 34 and the control circuit board 4 form a closed circuit with the battery 5 through the connecting wire 11. When the control circuit board 4 is powered on, the battery 5 and the turbine fan 34 are powered on through the control switch 41, which facilitates the control of operation.

[0039] Multiple side air inlets 31 are provided in the middle of the outer shell 1. A ventilation channel 32 is formed between the side air inlets 31 and the top section of the hollow tubular outer shell 1. A mounting sleeve 33 is installed at the bottom of the ventilation channel 32 to fix the turbine fan 34 in the mounting sleeve 33. When the turbine fan 34 rotates, the external airflow enters the ventilation channel 32 through the multiple side air inlets 31. The airflow enters the guide shroud 35 installed at the top of the ventilation channel 32 and is sent out through the air outlet 36 opened in the guide shroud 35. The air outlet 36 can provide air supply, which is convenient for blowing and cooling. Its structure is small and easy to carry. It can be put in a pocket and used at any time when going out.

[0040] Example 2

[0041] The difference between this embodiment and Embodiment 1 is as follows: Please refer to... Figure 5 A portable miniature brushless ducted fan includes: a housing 1, which has a square structure, a side air inlet 31 is provided around the middle of the housing 1, an insertion hole 9 is provided at the bottom of one of the side air inlets 31 on the surface of the housing 1, and an air outlet 36 is provided at the top of the housing 1.

[0042] In practical use: When in use, the external airflow enters through the side air inlet 31 that surrounds the middle of the square outer shell 1, and finally the airflow blows out through the air outlet 36, which facilitates cooling. The socket 9 at the bottom of the side air inlet 31 facilitates the insertion of the charging terminal for charging.

[0043] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable micro brushless ducted fan characterized by, Include: The outer shell (1) is hollow tubular, the surface of the outer shell (1) is provided with two through holes (2); The air supply assembly (3) includes a plurality of side air inlets (31) provided in the middle of the outer shell (1), the side air inlets (31) form a ventilation channel (32) between the top section of the hollow tubular outer shell (1), the bottom of the ventilation channel (32) is provided with a mounting sleeve (33) above the side air inlet (31), the inside of the mounting sleeve (33) is fixedly provided with a turbine fan (34), the top of the ventilation channel (32) is provided with a flow guide cover (35), the top of the flow guide cover (35) is provided with an air outlet (36); The control circuit board (4) is fixedly installed inside the outer shell (1), the surface of the control circuit board (4) is provided with a control switch (41), one side of the control switch (41) is provided with a charging indicator light (42), the control switch (41) and the charging indicator light (42) are respectively arranged inside the two through holes (2).

2. A portable micro brushless ducted fan according to claim 1, characterized in that: The inside of the outer shell (1) is provided with a battery (5) at the bottom of the control circuit board (4), and the bottom end of the outer shell (1) is provided with an end cover (6).

3. A portable micro brushless ducted fan according to claim 1, characterized in that: The surface of the control circuit board (4) is provided with a support column (7) on both sides, and the bottom of the mounting sleeve (33) is connected with the support column (7).

4. A portable micro brushless ducted fan according to claim 1, characterized in that: The back of the control circuit board (4) is provided with a charging interface (8), the surface of the outer shell (1) is provided with a jack (9) at the bottom of the side air inlet (31), and the charging interface (8) corresponds to the jack (9).

5. A portable micro brushless ducted fan according to claim 1, wherein: The top side of the mounting sleeve (33) is provided with a clearance hole (10), the surface of the turbine fan (34) is provided with a connecting line (11), and the connecting line (11) is inserted into the clearance hole (10).

6. A portable micro brushless ducted fan according to claim 1, wherein: The turbine fan (34) and the control circuit board (4) form a control closed circuit with the battery (5) through the connecting line (11).

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