Refrigeration fan

Abstract

A refrigeration fan comprises a fan shell, an air duct is arranged in the fan shell, a first air opening and a second air opening which are communicated with the air duct are formed in the fan shell, a fan blade driving set is arranged in the air duct, a refrigeration device is arranged at the position of the second air opening, and the refrigeration device comprises a heat dissipation piece. A first fan cover covers the first air port, a second fan cover covers the second air port, a positioning clamping groove is formed in the inner side of the edge of the second air port and / or the second fan cover, and an extension wing extending in the radial direction is arranged on the heat dissipation piece. The heat dissipation piece is clamped through the second fan cover and the fan shell and is matched with the positioning clamping groove and the extension wing for positioning and fixing, the structure is stable after assembly, and the installation space can be effectively saved. The folding bottom plate is arranged on the bottom face of the fan handle, when the folding bottom plate is unfolded, the handheld fan can be deformed into a desktop fan to be placed on a desktop for use, and the practicability of the fan is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a cooling fan. Background Art

[0002] When going out or doing outdoor activities in the summer, the weather is relatively hot and there may be no air conditioning. In order to keep cool at any time, portable fans come into being and are widely popular because they are easy to carry and can be used at any time.

[0003] However, in a hot environment, especially outdoors, even the air may be hot, so conventional fans cannot provide an ideal cooling effect in a high temperature environment. Therefore, some fans with cooling functions have emerged. However, such fans are more difficult to produce and assemble due to their complex structure, and once the structural design is unreasonable, the cooling effect will be affected. Utility Model Content

[0004] The utility model aims to provide a cooling fan with a simple and reasonable structural design and convenient assembly, so that the cooling effect can be maximized and the problems raised by the above-mentioned background technology can be solved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling fan comprises a fan housing, an air duct is arranged in the fan housing, a first air outlet and a second air outlet connected to the air duct are arranged on the fan housing, a driving fan blade group is arranged in the air duct, the driving fan blade group guides the air at the first air outlet and / or the second air outlet to flow through the air duct and then accelerates to be blown out from the second air outlet and / or the first air outlet, a refrigeration device is arranged at the second air outlet, the refrigeration device comprises a heat sink, a second air hood is covered at the second air outlet, a positioning slot is arranged on the inner side of the edge of the second air outlet and / or the second air hood, a radially extending extension wing is arranged on the heat sink, the heat sink is clamped between the second air outlet and the second air hood, the extension wing is inserted into the positioning slot to realize the positioning and installation of the heat sink at the second air outlet.

[0006] Preferably, the refrigeration device also includes a semiconductor refrigeration plate and a conduction surface cover, the second air hood is provided with a through hole, the semiconductor refrigeration plate is installed in the through hole, the conduction surface cover is arranged on the side of the semiconductor refrigeration plate away from the heat sink, the heating working surface of the semiconductor refrigeration plate is thermally connected to the heat sink, and the cooling working surface of the semiconductor refrigeration plate is thermally connected to the conduction surface cover.

[0007] Preferably, a motor base is provided in the air duct, the fan blade assembly is mounted on the motor base, the radial cross-section of the motor base is identical to the projection pattern of the radial cross-section of the heat sink, and the projection patterns of the two are coaxially overlapped.

[0008] Preferably, the first air outlet is covered with a first wind shield, and the first wind shield and the second wind shield are both snap-connected to the fan housing.

[0009] Preferably, the lower end portion of the fan housing extends downward to form a fan handle, a handle cavity is formed inside the fan handle, a circuit board assembly and a battery are installed in the handle cavity, and the fan blade group, refrigeration device and battery are all electrically connected to the circuit board assembly.

[0010] Preferably, the circuit board assembly is electrically connected with a control button and a USB interface, and the control button and the USB interface are both arranged in a through hole preset in the fan handle and extend outward from the through hole.

[0011] Preferably, a foldable bottom plate is rotatably connected to the lower edge of the fan handle via a rotating mechanism.

[0012] Preferably, the rotating mechanism comprises a shaft seat fixedly arranged at the bottom edge of the fan handle and a rotating shaft integrally formed at the edge of the folding bottom plate, and the rotating shaft is rotatably connected in the shaft seat.

[0013] Preferably, a bottom plate storage groove is provided on the bottom surface of the fan handle, and the foldable bottom plate can be stored in the bottom plate storage groove.

[0014] Preferably, the fan housing comprises a fan front housing and a fan rear housing which are covered and connected to each other.

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

[0016] The utility model adopts a snap-on connection structure for the first wind shield and the second wind shield, which is convenient and quick to assemble; the heat dissipation element is clamped by the second wind shield and the fan housing, and is positioned and fixed with the positioning slot and the extension wing, which not only has a stable structure after assembly, but also can effectively save installation space; a folding bottom plate is provided on the bottom surface of the fan handle, and when the folding bottom plate is unfolded, the handheld fan can be transformed into a desktop fan and placed on a desktop for use, thereby enhancing the practicality of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model structure explosion Figure 1 ;

[0018] Figure 2 The utility model structure explosion Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0020] Figure 4 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the structure of the utility model Figure 3 .

[0022] In the figure: 1 fan housing; 11 fan front housing; 12 fan rear housing; 13 air duct; 14 fan handle; 15 handle cavity; 16 bottom plate storage slot; 17 shaft seat; 18 motor base; 2 conduction surface cover; 3 second wind shield; 31 positioning card slot; 4 semiconductor cooling plate; 5 heat sink; 51 extension wing; 6 drive fan blade group; 7 first wind shield; 8 circuit board assembly; 81 control button; 82 USB interface; 9 battery; 10 folding bottom plate; 101 rotating shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 A cooling fan comprises a fan housing 1, wherein the fan housing 1 comprises a fan front housing 11 and a fan rear housing 12 which are connected to each other, an air duct 13 is arranged in the fan housing 1, a first air outlet and a second air outlet which are connected to the air duct 13 are arranged on the fan housing 1, a fan driving blade group 6 is arranged in the air duct 13, the fan driving blade group 6 guides the air at the first air outlet and / or the second air outlet to flow through the air duct 13 and then accelerates to be blown out from the second air outlet and / or the first air outlet, a refrigeration device is arranged at the second air outlet, the refrigeration device comprises a heat sink 5, a semiconductor refrigeration sheet 4 and a conductive surface cover 2, the second air outlet is covered with a second wind cover 3, and the second air outlet and / or the second wind cover 3 are provided on the inner side of the edge A positioning slot 31 is provided, and a radially extending extension wing 51 is provided on the heat sink 5. The heat sink 5 is clamped between the second air outlet and the second wind cover 3. The extension wing 51 is inserted into the positioning slot 31 to realize the positioning and installation of the heat sink 5 at the second air outlet. A through hole is opened on the second wind cover 3, and the semiconductor refrigeration plate 4 is installed in the through hole. The conduction surface cover 2 is provided on the side of the semiconductor refrigeration plate 4 away from the heat sink 5. The heating working surface of the semiconductor refrigeration plate 4 is thermally connected to the heat sink 5, and the cooling working surface of the semiconductor refrigeration plate 4 is thermally connected to the conduction surface cover 2. The first air outlet is covered with a first wind cover 7, and the first wind cover 7 and the second wind cover 3 are both snap-connected to the fan housing 1.

[0025] A motor base 18 is arranged in the air duct 13, and the fan blade group 6 is installed on the motor base 18. The circumferential part of the motor base 18 radially extends to the inner wall of the air duct 13, so that the motor base 18 and the inner wall of the air duct are arranged in a connected manner, and at the same time, the radial cross-section of the motor base 18 is the same as the radial cross-section projection pattern of the heat sink 5. When the two are coaxially arranged, the projection patterns are coaxially overlapped. This arrangement can not only maximize the heat dissipation area of ​​the radiator, but also realize the integration of the components of the air duct 13, thereby maximizing the wind resistance environment of the air duct.

[0026] The lower end portion of the fan housing 1 extends downward to form a fan handle 14, and a handle cavity 15 is formed inside the fan handle 14. A circuit board assembly 8 and a battery 9 are installed in the handle cavity 15. The fan blade group 6, the refrigeration device and the battery 9 are all electrically connected to the circuit board assembly 8. The circuit board assembly 8 is electrically connected with a control button 81 and a USB interface 82. The control button 81 and the USB interface 82 are both arranged in a preset through hole in the fan handle 14 and extend outward from the through hole.

[0027] The lower edge of the fan handle 14 is rotatably connected to the folding base plate 10 via a rotating mechanism. A base plate storage groove 16 is provided on the bottom surface of the fan handle 14. The folding base plate 10 can be stored in the base plate storage groove 16. The rotating mechanism includes an axle seat 17 fixed at the bottom edge of the fan handle 14 and a rotating shaft 101 integrally formed at the edge of the folding base plate 10. The rotating shaft 101 is rotatably connected to the axle seat 17.

[0028] In summary: in the utility model, the first wind cover 7 and the second wind cover 3 both adopt a snap-on connection structure, which is convenient and quick to assemble; the heat sink 5 is clamped by the second wind cover 3 and the fan housing 1, and is positioned and fixed in conjunction with the positioning slot 31 and the extended wing 51, which not only has a stable structure after assembly, but also can effectively save installation space; a folding bottom plate 10 is provided on the bottom surface of the fan handle 14, and when the folding bottom plate 10 is unfolded, the handheld fan can be transformed into a desktop fan and placed on a desktop for use, thereby enhancing the practicality of the fan.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling fan, comprising a fan housing (1), wherein an air duct (13) is arranged in the fan housing (1), wherein a first air outlet and a second air outlet connected to the air duct (13) are arranged on the fan housing (1), wherein a fan blade group (6) is arranged in the air duct (13), wherein the fan blade group (6) guides the air at the first air outlet and / or the second air outlet to flow through the air duct (13) and then accelerates the air to be blown out from the second air outlet and / or the first air outlet, wherein: A refrigeration device is provided at the second air outlet, the refrigeration device comprises a heat sink (5), a second air hood (3) is covered at the second air outlet, a positioning slot (31) is provided on the inner side of the edge of the second air outlet and / or the second air hood (3), a radially extending extension wing (51) is provided on the heat sink (5), the heat sink (5) is clamped between the second air outlet and the second air hood (3), and the extension wing (51) is inserted into the positioning slot (31), so that the heat sink (5) is positioned and installed at the second air outlet.

2. A cooling fan according to claim 1, characterized in that: The refrigeration device further comprises a semiconductor refrigeration sheet (4) and a conduction surface cover (2); a through hole is provided on the second air hood (3); the semiconductor refrigeration sheet (4) is installed in the through hole; the conduction surface cover (2) is arranged on the side of the semiconductor refrigeration sheet (4) away from the heat sink (5); the heat-generating working surface of the semiconductor refrigeration sheet (4) is connected to the heat sink (5) by thermal conduction; and the cooling working surface of the semiconductor refrigeration sheet (4) is connected to the conduction surface cover (2) by thermal conduction.

3. A cooling fan according to claim 1, characterized in that: A motor base (18) is arranged in the air duct (13), and the fan blade assembly (6) is mounted on the motor base (18). The radial cross section of the motor base (18) is the same as the radial cross section projection pattern of the heat sink (5), and the projection patterns of the two are coaxially overlapped.

4. A cooling fan according to claim 1, characterized in that: The first air outlet is covered with a first air hood (7), and the first air hood (7) and the second air hood (3) are both snap-connected to the fan housing (1).

5. The cooling fan according to claim 1, characterized in that: The lower end portion of the fan housing (1) extends downward to form a fan handle (14), a handle cavity (15) is formed inside the fan handle (14), a circuit board assembly (8) and a battery (9) are installed in the handle cavity (15), and the fan blade assembly (6), the refrigeration device and the battery (9) are all electrically connected to the circuit board assembly (8).

6. A cooling fan according to claim 5, characterized in that: The circuit board assembly (8) is electrically connected with a control button (81) and a USB interface (82); the control button (81) and the USB interface (82) are both arranged in a through hole preset in the fan handle (14) and extend outward from the through hole.

7. A cooling fan according to claim 5 or 6, characterized in that: The lower edge of the fan handle (14) is rotatably connected to a foldable bottom plate (10) via a rotating mechanism.

8. A cooling fan according to claim 7, characterized in that: The rotating mechanism comprises a shaft seat (17) fixedly arranged at the bottom edge of the fan handle (14) and a rotating shaft (101) integrally formed at the edge of the folding bottom plate (10), wherein the rotating shaft (101) is rotatably connected in the shaft seat (17).

9. The cooling fan according to claim 7, characterized in that: A bottom plate storage groove (16) is provided on the bottom surface of the fan handle (14), and the folding bottom plate (10) can be stored in the bottom plate storage groove (16).

10. A cooling fan according to any one of claims 1, 4 and 5, characterized in that: The fan housing (1) comprises a fan front housing (11) and a fan rear housing (12) which are connected to each other and cover each other.

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