Multifunctional double-blade fan

Abstract

The utility model discloses a multifunctional double-blade fan which comprises a fan body, the fan body comprises a shell, an installation support is arranged in the shell and arranged between an air inlet and an air outlet, a first sub-containing cavity is defined between the installation support and the air inlet, and a second sub-containing cavity is defined between the installation support and the air outlet. A first sub-containing cavity is defined between the installation support and the air outlet, a second sub-containing cavity is defined between the installation support and the air outlet, the first sub-containing cavity is communicated with the second sub-containing cavity, fan blade sets are arranged in the first sub-containing cavity and the second sub-containing cavity respectively, and at least one fan blade set installation base is arranged on the installation support. The mounting bracket is arranged between the air inlet cover and the air outlet cover and is used for bearing at least one fan blade group in an apportionment manner, so that the air inlet cover and / or the air outlet cover are / is free of design space and can be used for loading more functional designs, the functions of the double-blade fan are enriched, and the practicability and the cost performance of the double-blade fan are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a multifunctional double-blade fan. Background Technology

[0002] Fans are common household appliances in our daily lives, used to cool down in hot weather. Due to their practical function, fans are widely used.

[0003] Among the various types of fans, there is a dual-blade fan. As the name suggests, a dual-blade fan has two sets of drive fan blades installed in the same fan cavity. The two sets of coaxial drive fan blades work together to achieve high-speed, quiet airflow. The design of a dual-blade fan usually places the two drive fan blades on opposite sides of the air inlet and outlet shrouds. The advantage of this design is that it saves space in the thickness of the fan cavity, but the disadvantage is also quite obvious. The entire fan cavity is surrounded by the two sets of drive fan blades, which prevents the fan cavity from accommodating more functional designs. Therefore, the dual-blade fans we see on the market today are relatively simple in function. Utility Model Content

[0004] The purpose of this utility model is to provide a multifunctional dual-blade fan, in which a mounting bracket is provided between the air inlet shroud and the air outlet shroud. The mounting bracket is used to distribute the load of at least one fan blade assembly, thereby freeing up the design space of the air inlet shroud and / or the air outlet shroud, which can be used to load more functional designs, thereby enriching the functions of the dual-blade fan, enhancing its practicality and cost-effectiveness, and solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional dual-blade fan, comprising a fan body, the fan body including a housing, the housing forming a cavity, the housing having an air inlet and an air outlet communicating with the cavity, the housing having a mounting bracket disposed within the housing, the mounting bracket being disposed between the air inlet and the air outlet, the space between the mounting bracket and the air inlet defining a first sub-cavity, the space between the mounting bracket and the air outlet defining a second sub-cavity, the first sub-cavity and the second sub-cavity communicating with each other, each of the first and second sub-cavities having a fan blade assembly, the mounting bracket having at least one fan blade assembly mounting seat, the fan blade assembly being mounted on the fan blade assembly mounting seat, the fan blade assembly in the first sub-cavity and the fan blade assembly in the second sub-cavity being coaxially arranged.

[0006] Preferably, the fan blade assembly mounting base on the mounting bracket is arranged facing the side where the air outlet is located, and another fan blade assembly mounting base is arranged on the wall surface where the air inlet is located, with the fan blade assembly mounting base on the air inlet wall surface facing the side where the mounting bracket is located.

[0007] Preferably, the housing includes an air inlet hood and an air outlet hood that are connected to each other. The air inlet is disposed on the air inlet hood, and the air outlet is disposed on the air outlet hood. The air inlet hood includes a first mating edge, and the air outlet hood includes a second mating edge. A first stepped edge is disposed on the inner wall surface of the first mating edge, and a second stepped edge is disposed on the end surface of the second mating edge. The second stepped edge includes a cut surface and a fastening part that are axially continuously disposed. The maximum outer diameter of the cut surface is not greater than the outer diameter of the fastening part, the outer diameter of the fastening part is not greater than the inner diameter of the first mating edge, and the outer diameter of the mounting bracket is not greater than the inner diameter of the first mating edge. The mounting bracket is clamped between the first stepped edge and the second stepped edge.

[0008] Preferably, the outer diameter of the first mating edge is equal to the outer diameter of the second mating edge.

[0009] Preferably, a fastening part is arranged on the second joint edge fastening part, and a fastening key is provided on the inner wall surface of the first joint edge corresponding to the fastening part. When the air inlet hood and the air outlet hood are closed and connected, the fastening key is snapped into place with the fastening part.

[0010] Preferably, a semiconductor through hole is provided at the core of the air outlet shroud, penetrating both the inside and outside of the air outlet shroud. A hot and cold semiconductor is provided inside the semiconductor through hole. The hot and cold semiconductor is thermally connected to a heat sink on the side inside the air outlet shroud, and thermally connected to a conductive cover on the side outside the air outlet shroud.

[0011] Preferably, the mounting bracket includes a circular ring, a connecting node is provided at the center of the circular ring, the circumferential wall portion of the connecting node extends radially toward the circular ring to form a connecting rib, and the end of the connecting rib away from the connecting node is connected to the circular ring.

[0012] Preferably, the number of connecting ribs is three, and the two adjacent connecting ribs are evenly arranged at a 120-degree angle.

[0013] Preferably, the lower part of the fan body extends downward to form a connecting arm, and a fan handle is rotatably connected to the lower end of the connecting arm. A buckle is provided on the connecting arm, and a buckle base is provided on the fan handle. A buckle is integrally connected to the buckle base. When the fan body and the fan handle are in a handheld position, the buckle and the buckle base are snapped together to stabilize the handheld position.

[0014] Preferably, the fan handle includes a front shell and a rear shell that are connected to each other, forming a receiving cavity between the front shell and the rear shell. A battery and a circuit board assembly are installed in the receiving cavity. The battery and the circuit board assembly are electrically connected. A control button and a USB interface are electrically connected to the circuit board assembly. The control button and the USB interface are located in a pre-set through hole in the rear shell and extend outward from the through hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a mounting bracket between the air inlet shroud and the air outlet shroud. The mounting bracket is used to distribute the load of at least one fan blade assembly, thereby freeing up the design space of the air inlet shroud and / or the air outlet shroud for loading the hot and cold semiconductor function design. Based on the high efficiency and quiet blowing, it realizes the care function of cold compress or hot compress, thereby enriching the function of the dual-blade fan and enhancing its practicality and cost performance. Attached Figure Description

[0017] Figure 1 Explosion of the structure of this utility model Figure 1 ;

[0018] Figure 2 This utility model is a structural explosion Figure 2 ;

[0019] Figure 3 For reference regarding the usage status of this utility model Figure 1 ;

[0020] Figure 4 For reference regarding the usage status of this utility model Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the cross-sectional orientation of the air outlet hood AA of this utility model;

[0022] Figure 6 This is a cross-sectional view of the air outlet cover AA of this utility model;

[0023] Figure 7 This is an enlarged view of section B of this utility model.

[0024] In the diagram: 1 Fan body; 11 Conductive cover; 12 Hot and cold semiconductor; 13 Exhaust cover; 131 Semiconductor through-hole; 132 Second mating edge; 133 Second stepped edge; 134 Fastening part; 135 Cut-out part; 14 Heat sink; 15 Drive fan blade assembly; 16 Mounting bracket; 17 Mounting bracket; 171 First mating edge; 172 First stepped edge; 18 Fan blade assembly mounting base; 2 Connecting arm; 21 Buckle; 22 Buckle claw base; 23 Buckle claw; 3 Fan handle; 31 Front shell; 32 Battery; 33 Circuit board assembly; 331 Control button; 332 USB interface; 34 Rear shell; 35 Lanyard connecting ear. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-7 A multifunctional dual-blade fan includes a fan body 1, which includes a housing. A cavity is formed within the housing. An air inlet and an air outlet are provided on the housing, communicating with the cavity. A mounting bracket 16 is provided within the housing, positioned between the air inlet and the air outlet. The area between the mounting bracket 16 and the air inlet defines a first sub-cavity, and the area between the mounting bracket 16 and the air outlet defines a second sub-cavity. The first and second sub-cavities are interconnected. Each sub-cavity contains a fan blade assembly 15. At least one fan blade assembly mounting seat 18 is provided on the mounting bracket 16. The fan blade assemblies 15 are mounted on the fan blade assembly mounting seats 18. The fan blade assemblies 15 in the first and second sub-cavities are coaxially arranged, and their rotation directions are opposite during operation.

[0027] In this embodiment, the mounting bracket 16 includes a circular ring. A connecting node is provided at the center of the circular ring. A connecting rib is formed by the circumferential wall portion of the connecting node extending radially toward the circular ring. The end of the connecting rib away from the connecting node is connected to the circular ring. There are three connecting ribs, and two adjacent connecting ribs are evenly arranged at a 120-degree angle. A fan blade assembly mounting seat 18 is provided on the connecting node of the mounting bracket 16. The fan blade assembly mounting seat 18 on the mounting bracket 16 is positioned toward the side where the air outlet is located. Another fan blade assembly mounting seat 18 is provided on the wall surface where the air inlet is located. The fan blade assembly mounting seat 18 on the air inlet wall surface is positioned toward the side where the mounting bracket 16 is located.

[0028] The housing includes an air inlet hood 17 and an air outlet hood 13 that are connected to each other. The air inlet is disposed on the air inlet hood 17, and the air outlet is disposed on the air outlet hood 13. The air inlet hood 17 includes a first connecting edge 171, and the air outlet hood 13 includes a second connecting edge 132. The outer diameter of the first connecting edge 171 is equal to the outer diameter of the second connecting edge 132. The equal-sized first connecting edge 171 and the second connecting edge 132 can achieve a smooth transition of the outer wall after the air inlet hood 17 and the air outlet hood 13 are connected. A first stepped edge 172 is provided on the inner wall surface of the first connecting edge 171, and a second stepped edge 133 is provided on the end face of the second connecting edge 132. The second stepped edge 133 covers... The assembly includes a continuously arranged axially oriented cut surface 135 and a fastening part 134. The maximum outer diameter of the cut surface 135 is not greater than the outer diameter of the fastening part 134, the outer diameter of the fastening part 134 is not greater than the inner diameter of the first mating edge 171, and the outer diameter of the mounting bracket 16 is not greater than the inner diameter of the first mating edge 171. The mounting bracket 16 is sandwiched between the first step edge 172 and the second step edge 133. The fastening part 134 of the second mating edge 132 is provided with a snap-fit ​​position, and a snap-fit ​​key is provided on the inner wall surface of the first mating edge 171 corresponding to the snap-fit ​​position. When the air inlet hood 17 and the air outlet hood 13 are closed and connected, the snap-fit ​​key is snapped into place with the snap-fit ​​position. This assembly structure can effectively reduce assembly difficulty and improve production efficiency.

[0029] A semiconductor through-hole 131 is provided at the core of the air outlet shroud 13, penetrating both the inside and outside of the air outlet shroud 13. A heating and cooling semiconductor 12 is provided inside the semiconductor through-hole 131. The heating and cooling semiconductor 12 is thermally connected to a heat sink 14 on the side inside the air outlet shroud and thermally connected to a conductive cover 11 on the side outside the air outlet shroud. When the heating and cooling semiconductor 12 is working, a cooling operation can be performed on the working surface facing the conductive cover 11, which can be used for cold compress care. At this time, according to the law of conservation of energy, a heating effect will occur on the working surface facing the heat sink 14. The heat generated by the heating effect can be diffused outward through the heat sink 14 to achieve heat dissipation. Conversely, when a heating operation is performed on the working surface facing the conductive cover 11, the heat sink is used to diffuse and evaporate the cold air.

[0030] The lower part of the fan body 1 extends downward to form a connecting arm 2. A fan handle 3 is rotatably connected to the lower end of the connecting arm 2. A buckle 21 is provided on the connecting arm 2. A buckle base 22 is provided on the fan handle 3. A buckle 23 is integrally connected to the buckle base 22. When the fan body 1 and the fan handle 3 are in a handheld position, the buckle 23 is snapped into the buckle 21 to stabilize the handheld position. The fan handle 3 includes a front shell 31 and a rear shell 34 that are connected to each other, forming a cavity between the front shell 31 and the rear shell 34. A battery 32 and a circuit board assembly 33 are installed in the cavity. The fan blade assembly 15 and the battery 32 are electrically connected to the circuit board assembly 33. A control button 331 and a USB interface 332 are electrically connected to the circuit board assembly 33. The control button 331 and the USB interface 332 are located in a pre-set through hole in the rear shell 34 and extend outward from the through hole. The control button 331 is used to control the working mode and working state of the fan blade assembly 15 and the heating and cooling semiconductor 12.

[0031] The fan handle 3 has symmetrical hanging loops 35 on both sides of its upper end. The hanging loops 35 are designed to accommodate hanging loops and folding mechanisms, such as... Figure 4 As shown, the fan itself can be worn as a neck fan.

[0032] In summary, this utility model provides a mounting bracket 16 between the air inlet shroud 17 and the air outlet shroud 13. The mounting bracket 16 is used to distribute the load of at least one drive fan blade assembly 15, thereby freeing up design space in the air inlet shroud 17 and / or the air outlet shroud 13 for the loading of the hot and cold semiconductor 12 functional design. Based on the high efficiency and quiet air blowing, it realizes the care function of cold compress or hot compress, thereby enriching the function of the dual-blade fan and enhancing its practicality and cost-effectiveness.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional double-blade fan, comprising a fan body (1), the fan body (1) comprising a housing, the housing forming a cavity, the housing being provided with an air inlet and an air outlet communicating with the cavity, characterized in that: An installation bracket (16) is provided inside the housing. The installation bracket (16) is located between the air inlet and the air outlet. The space between the installation bracket (16) and the air inlet is defined as a first sub-cavity, and the space between the installation bracket and the air outlet is defined as a second sub-cavity. The first sub-cavity and the second sub-cavity are connected. A fan blade assembly (15) is provided in both the first sub-cavity and the second sub-cavity. At least one fan blade assembly mounting seat (18) is provided on the installation bracket (16). The fan blade assembly (15) is mounted on the fan blade assembly mounting seat (18). The fan blade assembly (15) in the first sub-cavity and the fan blade assembly (15) in the second sub-cavity are coaxially arranged.

2. A multifunctional double-blade fan according to claim 1, characterized in that: The fan blade assembly mounting seat (18) on the mounting bracket (16) is set facing the side where the air outlet is located, and another fan blade assembly mounting seat (18) is set on the wall side where the air inlet is located. The fan blade assembly mounting seat (18) on the wall side of the air inlet is set facing the side where the mounting bracket (16) is located.

3. A multifunctional double-blade fan according to claim 1, characterized in that: The housing includes an air inlet hood (17) and an air outlet hood (13) that are connected to each other. The air inlet is disposed on the air inlet hood (17), and the air outlet is disposed on the air outlet hood (13). The air inlet hood (17) includes a first mating edge (171), and the air outlet hood (13) includes a second mating edge (132). A first stepped edge (172) is provided on the inner wall surface of the first mating edge (171), and a second stepped edge (132) is provided on the end face of the second mating edge (132). 3) The second step edge (133) includes a cut surface (135) and a fastening part (134) arranged axially continuously. The maximum outer diameter of the cut surface (135) is not greater than the outer diameter of the fastening part (134). The outer diameter of the fastening part (134) is not greater than the inner diameter of the first joint edge (171). The outer diameter of the mounting bracket (16) is not greater than the inner diameter of the first joint edge (171). The mounting bracket (16) is sandwiched between the first step edge (172) and the second step edge (133).

4. A multifunctional double-blade fan according to claim 3, characterized in that: The outer diameter of the first mating edge (171) is equal to the outer diameter of the second mating edge (132).

5. A multifunctional double-blade fan according to claim 3, characterized in that: The fastening part (134) of the second joint edge (132) is provided with a buckle, and the inner wall surface of the first joint edge (171) is provided with a buckle key corresponding to the buckle. When the air inlet hood (17) and the air outlet hood (13) are closed and connected, the buckle key is snapped into place with the buckle.

6. A multifunctional double-blade fan according to claim 3, characterized in that: The air outlet shroud (13) has a semiconductor through hole (131) that runs through the inside and outside of the air outlet shroud (13). A hot and cold semiconductor (12) is provided inside the semiconductor through hole (131). The hot and cold semiconductor (12) is thermally connected to a heat sink (14) on the side inside the air outlet shroud. The hot and cold semiconductor (12) is thermally connected to a conductive cover (11) on the side outside the air outlet shroud.

7. A multifunctional double-blade fan according to any one of claims 1, 2, and 3, characterized in that: The mounting bracket (16) includes a circular ring body, and a connecting node is provided at the center of the circular ring body. The circumferential wall portion of the connecting node extends radially toward the circular ring body to form a connecting rib, and the end of the connecting rib away from the connecting node is connected to the circular ring body.

8. A multifunctional double-blade fan according to claim 7, characterized in that: The number of connecting ribs is set to three, and the two adjacent connecting ribs are evenly arranged at a 120-degree angle.

9. A multifunctional double-blade fan according to claim 1, characterized in that: The lower end of the fan body (1) extends downward to form a connecting arm (2). A fan handle (3) is rotatably connected to the lower end of the connecting arm (2). A buckle (21) is provided on the connecting arm (2). A buckle base (22) is provided on the fan handle (3). A buckle (23) is integrally connected to the buckle base (22). When the fan body (1) and the fan handle (3) are in a handheld position, the buckle (23) and the buckle base (21) are snapped together to stabilize the handheld position.

10. A multifunctional double-blade fan according to claim 9, characterized in that: The fan handle (3) includes a front shell (31) and a rear shell (34) that are connected to each other. A cavity is formed between the front shell (31) and the rear shell (34). A battery (32) and a circuit board assembly (33) are installed in the cavity. The battery (32) and the circuit board assembly (33) are electrically connected. A control button (331) and a USB interface (332) are electrically connected to the circuit board assembly (33). The control button (331) and the USB interface (332) are located in a pre-set through hole in the rear shell (34) and extend outward from the through hole.

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