Cooling fan

Abstract

The utility model relates to the technical field of fans, in particular to a cooling fan which is provided with a ventilation cavity, and a cooling module and an air blowing module are arranged in the ventilation cavity, so that the fan blows out cold air, and the cooling effect is effectively improved. In the cooling module, a first surface cover, a refrigeration sheet, a first cooling sheet and a second cooling sheet are sequentially arranged in the axial direction of the ventilation cavity and are tightly attached, and the first surface cover is attached to the refrigeration sheet and used for conducting low temperature and making contact with airflow so as to form cold air and improve the cooling effect; the first cooling fin and the second cooling fin are arranged on the other side of the refrigeration sheet and used for cooling the refrigeration sheet, and normal use is guaranteed; in addition, the connecting support is arranged in the ventilation cavity, on one hand, stable supporting is provided for the cooling module and the air blowing module, on the other hand, the internal space layout of the fan is optimized, and the overall stability is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field, especially a cooling fan. BACKGROUND

[0002] Handheld portable fan is a kind of common equipment that people prevent heatstroke and cooling in outdoor activities, commuting, with the increasing pursuit of comfort, the refrigeration effect of this kind of portable fan is also increasingly improved. Traditional handheld fan relies on simple air flow to achieve cooling, once in the hot sun outdoor high-temperature environment, its refrigeration capacity is difficult to meet the requirements of users.

[0003] For the above problems, part of handheld fan will introduce refrigeration sheet auxiliary refrigeration, but the refrigeration sheet of present market handheld fan has the problems of low heat conduction efficiency, so that the overall refrigeration performance of fan is poor, can not satisfy the demand of user. INVENTION CONTENTS

[0004] Therefore, the utility model discloses the purpose at, provide a kind of cooling fan.

[0005] The utility model discloses the following technical scheme:

[0006] A cooling fan, comprising:

[0007] The shell is provided with a cylindrical ventilation cavity with both ends through, and a connecting bracket is fixedly arranged in the ventilation cavity.

[0008] The cooling module is connected to one side of the connecting bracket, and the cooling module comprises a refrigeration sheet, a first heat sink and a second heat sink installed in the ventilation cavity. The refrigeration sheet, the first heat sink and the second heat sink are mutually adhered and arranged in sequence along the axial direction of the ventilation cavity. The second heat sink comprises a disc-shaped heat dissipation disc and a support column arranged on the outer wall of the heat dissipation disc, and the support column extends along the radial direction of the heat dissipation disc. The cooling module further comprises a first face cover fixed to the side port of the ventilation cavity close to the cooling module, and the first face cover is mutually adhered with the refrigeration sheet.

[0009] The blowing module is installed in the ventilation cavity and connected with the connecting bracket. The blowing module is used to guide the airflow into the cooling module, and the airflow forms cold air after passing through the cooling module.

[0010] Preferably, the cooling module further comprises a mounting rack connected with the connecting support; the mounting rack is disc-shaped, and the mounting rack is provided with a mounting groove extending along the ventilation cavity in the axial direction and penetrating through both ends; the refrigeration sheet and the first heat dissipation sheet are fixed in the mounting groove, the second heat dissipation sheet is attached to one side of the mounting rack close to the first heat dissipation sheet, and the first cover is attached to one side of the mounting rack close to the refrigeration sheet.

[0011] Preferably, the connecting support comprises a connecting ring, a connecting seat arranged on the inner side of the connecting ring, and a support arm arranged between the connecting ring and the connecting seat; the cooling module and the blowing module are respectively connected to both sides of the connecting seat, and the connecting ring is connected with the inner wall of the ventilation cavity.

[0012] Preferably, a plurality of positioning columns are arranged on one side of the connecting seat facing the cooling module, the second heat dissipation sheet is provided with a plurality of positioning holes, and the mounting rack is provided with a plurality of mounting holes; the positioning columns, the positioning holes and the mounting holes are coaxially arranged one by one; the positioning columns pass through the positioning holes and are inserted into the mounting holes, so as to realize the assembly connection of the connecting support, the second heat dissipation sheet and the mounting rack.

[0013] Preferably, a sinking groove is arranged on one side of the connecting seat facing the cooling module, the second heat dissipation sheet is clamped in the sinking groove, and one end of the support column away from the heat dissipation disc abuts against the inner wall of the connecting ring.

[0014] Preferably, the support arms are arranged in a circumferential array on the outer wall of the connecting seat, and the support columns are arranged at intervals with the support arms.

[0015] Preferably, the outer wall of the mounting rack is extended and provided with a positioning member, and the inner wall of the connecting ring is provided with a positioning notch; the positioning member is matched with the positioning notch, so as to realize the mutual positioning of the mounting rack and the connecting support.

[0016] Preferably, a second cover is arranged on one side end of the ventilation cavity close to the blowing module.

[0017] Preferably, the blowing module comprises a driving element and a rotating seat connected in a driving mode; the driving element is connected with the connecting support, and the outer side of the rotating seat is provided with a fan blade; the driving element drives the rotating seat and the fan blade to rotate, so as to realize the guidance of airflow.

[0018] Preferably, the bottom of the shell is provided with a holding handle, the inner side of the holding handle is provided with an electric control module, the electric control module is electrically connected with the refrigeration sheet, and the electric control module is electrically connected with the blowing module.

[0019] The utility model discloses the beneficial effect is:

[0020] The utility model relates to a cooling fan, set up ventilation cavity, and set up cooling module and blow module in ventilation cavity, make the fan blow out cold wind, effectively promote cooling effect, in cooling module, first face cover, refrigeration piece, first radiating fin and second radiating fin are in turn arranged and closely adhere along ventilation cavity axial direction, first face cover is adhered with refrigeration piece, is used for conducting low temperature and contacts with airflow to form cold wind, improves cooling effect, first radiating fin and second radiating fin are arranged in the other side of refrigeration piece, are used for the heat dissipation of refrigeration piece, guarantee normal use, in addition set up connecting support in ventilation cavity, one side provides stable support for cooling module and blow module, the other side optimizes the internal space layout of fan, strengthens overall stability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is cooling fan's structural schematic diagram of the utility model;

[0022] Figure 2 It is cooling fan's structural schematic diagram of the utility model; Figure 1

[0023] Figure 3 It is cooling fan's structural schematic diagram of the utility model; Figure 1

[0024] Figure 4 It is cooling fan's structural schematic diagram of the utility model;

[0025] Figure 5 It is cooling fan's structural schematic diagram of the utility model; Figure 4

[0026] Figure 6 It is cooling fan's structural schematic diagram of the utility model; Figure 2

[0027] It is cooling fan's structural schematic diagram of the utility model; Figure 7 Figure 2 It is cooling fan's structural schematic diagram of the utility model;

[0028] Figure 8 Figure 2 It is cooling fan's structural schematic diagram of the utility model;

[0029] Reference numerals in the drawing:

[0030] ​​​​​10 - housing; 11 - ventilation cavity; 12 - connecting bracket; 13 - connecting ring; 131 - positioning notch; 14 - connecting seat; 141 - sunken groove; 142 - positioning column; 143 - connecting shaft; 15 - support arm; 16 - first face cover; 17 - second face cover; 20 - cooling module; 21 - mounting rack; 211 - mounting groove; 212 - mounting hole; 213 - positioning piece; 22 - refrigeration fin; 23 - first heat dissipation fin; 24 - second heat dissipation fin; 241 - heat dissipation disc; 242 - support column; 243 - positioning hole; 30 - blowing module; 31 - driving element; 32 - rotating seat; 33 - fan blade; 40 - holding handle; 41 - electric control module; 42 - control button; 43 - display screen; 44 - charging interface. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "vertical direction", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "provision", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] For example, Figures 1 to 8As shown, the cooling fan of the utility model, including casing 10, cooling module 20 and blowing module 30, wherein cooling module 20 and blowing module 30 are all installed in casing 10;When working, cooling module 20 carries out refrigeration, blowing module 30 guides airflow to pass through cooling module 20 to form cold wind, and blows out the cold wind, and carries out cooling to the user.

[0035] Please refer to Figure 2 And Figure 3 , casing 10 is provided with the cylindrical ventilation cavity 11 of both ends through.

[0036] Ventilation cavity 11 is fixed with the connecting support 12 for connecting cooling module 20 and blowing module 30, as Figure 6 Shown, connecting support 12 includes connecting ring 13, connecting seat 14 arranged in the inner side of connecting ring 13 and support arm 15 arranged between connecting ring 13 and connecting seat 14, cooling module 20 and blowing module 30 are connected to both sides of connecting seat 14 respectively, and connecting ring 13 is connected with the inner wall of ventilation cavity 11. Among them, support arm 15 is circumferentially arrayed on the outer wall of connecting seat 14, provides different direction support force for connecting seat 14, and further improves the structural strength of connecting support 12. Specifically, the side of connecting seat 14 towards cooling module 20 is provided with sunken groove 141 and multiple positioning columns 142, and the positioning columns 142 are arranged in the sunken groove 141;The side of connecting seat 14 towards blowing module 30 is provided with connecting shaft 143;The inner wall of connecting ring 13 is provided with positioning notch 131.

[0037] As Figure 2 And Figure 3 Shown, the two end openings of ventilation cavity 11 are respectively provided with first face cover 16 and second face cover 17;Specifically, first face cover 16 is arranged on one side of cooling module 20, and is closely attached with cooling module 20, first face cover 16 is selected from metal material with excellent heat conduction performance, specifically made of iron, first face cover 16 is attached with cooling module 20, and first face cover 16 is in low temperature state when working, airflow is cooled to form cold wind after passing through first face cover 16, and the fan finally blows out the cold wind, and the cooling effect is good;First face cover 16 fully covers the air outlet side of ventilation cavity 11, the covering area is large, and the cooling effect of the fan is improved. While second face cover 17 is arranged on one side of blowing module 30 and is selected from plastic material (ABS), which is convenient for production and assembly. Meanwhile, first face cover 16 and second face cover 17 are both provided with ventilation holes, which facilitates the inflow and outflow of airflow, and ensures the normal use of the fan.

[0038] Please refer to Figure 2 、 Figure 3 And Figure 5The cooling module 20 comprises a mounting frame 21, a refrigeration sheet 22, a first heat dissipation sheet 23 and a second heat dissipation sheet 24, which are all mounted in the air duct 11. The refrigeration sheet 22, the first heat dissipation sheet 23 and the second heat dissipation sheet 24 are adhered to each other and arranged in sequence along the axial direction of the air duct 11, and the first cover 16 is adhered to the side of the refrigeration sheet 22 away from the first heat dissipation sheet 23.

[0039] The refrigeration sheet 22 is composed of N-type semiconductor material and P-type semiconductor material, and heat is transferred between the N-type and P-type semiconductor material through direct current. At this time, the side of the refrigeration sheet 22 close to the first heat dissipation sheet 23 generates high temperature, and the side close to the first cover 16 generates low temperature. The first cover 16 is adhered to the low-temperature side of the refrigeration sheet 22 to conduct low temperature. When the external air flow passes through the cooling module 20 and contacts the first cover 16, the temperature of the external air flow is reduced, and finally cold air is formed. The first heat dissipation sheet 23 and the second heat dissipation sheet 24 are adhered to the high-temperature side of the refrigeration sheet 22 to dissipate heat of the refrigeration sheet 22 and ensure normal use. It should be noted that in actual work, the air flow first contacts the second heat dissipation sheet 24 to rise in temperature, and then contacts the first cover 18 to fall in temperature. Since the first heat dissipation sheet 23 and the second heat dissipation sheet 24 are used in combination, and both the first heat dissipation sheet 23 and the second heat dissipation sheet 24 are made of aluminum material with excellent heat dissipation performance, heat loss can be caused, so that the air flow finally contacts the first cover 16 to form cold air.

[0040] As shown in Figure 7 The mounting frame 21 is disc-shaped, and the mounting frame 21 is provided with a mounting groove 211 extending along the axial direction of the air duct 11 and penetrating through both ends. The refrigeration sheet 22 and the first heat dissipation sheet 23 are fixed in the mounting groove 211, and the refrigeration sheet 22 is adhered to one side of the mounting frame 21. The mounting frame 21 is made of plastic material (ABS), which has poor heat conduction performance. Therefore, by using the above structure, the low temperature of the refrigeration sheet 22 can only be conducted to the first cover 16, and vice versa, the high temperature can only be conducted to the first heat dissipation sheet 23 and the second heat dissipation sheet 24, so as to ensure the cooling effect of the fan. At the same time, the use of the mounting frame 21 can improve the connection stability of the components of the cooling module 20. In this embodiment, the mounting groove 211, the refrigeration sheet 22 and the first heat dissipation sheet 23 are all rectangular structures, which are convenient for production, manufacturing and assembly. Specifically, the mounting frame 21 is provided with a plurality of mounting holes 212, and the mounting holes 212 are coaxially arranged one by one with the positioning columns 142. In addition, the outer wall of the mounting frame 21 is extended to be provided with a positioning member 213, and the positioning member 213 is matched with the positioning notch 131 of the connecting ring 13 to realize the mutual positioning of the mounting frame 21 and the connecting support 12.

[0041] As shown in Figure 8As shown, the second heat sink 24 comprises a disc-shaped heat disc 241 and a support column 242 arranged on the outer wall of the heat disc 241, the support column 242 extends along the radial direction of the heat disc 241, the support column 242 is arranged in the interval of the support arm 15, and the end of the support column 242 away from the heat disc 241 abuts against the inner wall of the connecting ring 13. The support column 242 can play a supporting role, improve the structural strength of the fan, and at the same time, the support column 242 and the support arm 15 leave a ventilation gap, which is convenient for airflow to pass through and ensure blowing. In addition, the heat disc 241 is provided with a plurality of positioning holes 243, the positioning holes 243 are coaxially arranged one by one with the positioning columns 142, the positioning columns 142 pass through the positioning holes 243 and are inserted into the mounting holes 212, so as to realize the assembly connection of the connecting bracket 12, the second heat sink 24 and the mounting bracket 21.

[0042] When assembling the cooling module 20, first, the refrigeration sheet 22 and the first heat sink 23 are assembled into the mounting groove 211 of the mounting bracket 21, and the second heat sink 24 is clamped into the sunken groove 141, at this time, the positioning column 142 passes through the positioning hole 243 of the second heat sink 24; then the mounting bracket 21 is connected with the connecting bracket 12, that is, the positioning column 142 is inserted into the mounting hole 212, and finally, the screw is locked.

[0043] Please refer to Figures 2-5 , the blowing module 30 comprises a driving element 31 and a rotating seat 32 connected in driving mode; the driving element 31 is connected with the connecting shaft 143 of the connecting bracket 12, and the outer side of the rotating seat 32 is provided with a fan blade 33. The driving element 31 is a motor, and the driving element 31 drives the rotating seat 32 and the fan blade 33 to rotate, so as to realize the guidance of airflow.

[0044] Please refer to Figures 1-5 , the bottom of the shell 10 is provided with a holding handle 40, and the inner side of the holding handle 40 is provided with an electric control module 41. The electric control module 41 is electrically connected with the refrigeration sheet 22, and the electric control module 41 is electrically connected with the blowing module 30. The control button 42, the display screen 43 and the charging interface 44 connected with the electric control module 41 are arranged on the outer wall of the holding handle 40. The user can control the wind speed, refrigeration temperature, on-off and other functions of the fan through the control button 42, the display screen can display the working parameters of the fan, and the charging interface 44 is used for supplementing the electric quantity.

[0045] Compared with the prior art, the cooling fan disclosed by the utility model, which is provided with a ventilation cavity and a cooling module and a blowing module arranged in the ventilation cavity, blows out cold air, effectively improving the cooling effect; in the cooling module, the first cover, the refrigeration sheet, the first heat dissipation sheet and the second heat dissipation sheet are arranged in sequence along the ventilation cavity axis and closely adhere to each other, the first cover adheres to the refrigeration sheet, is used for conducting low temperature and contacting with air flow to form cold air and improve the cooling effect; the first heat dissipation sheet and the second heat dissipation sheet are arranged on the other side of the refrigeration sheet and are used for heat dissipation of the refrigeration sheet, ensuring normal use; additionally, a connecting support is arranged in the ventilation cavity, which provides stable support for the cooling module and the blowing module on the one hand and optimizes the internal space layout of the fan and enhances the overall stability on the other hand.

[0046] The above only expresses the preferred technical scheme of the utility model, which is described in detail, but cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, and the utility model also intends to include these changes and modifications.

Claims

1. A cooling fan, characterized in that, include: The housing has a cylindrical ventilation cavity that extends through both ends, and a connecting bracket is fixedly installed inside the ventilation cavity; A cooling module is connected to one side of the connecting bracket. The cooling module includes a cooling fin, a first heat sink, and a second heat sink installed in the ventilation cavity. The cooling fin, the first heat sink, and the second heat sink are attached to each other and arranged sequentially along the axial direction of the ventilation cavity. The second heat sink includes a disc-shaped heat sink and a support column disposed on the outer wall of the heat sink, the support column extending radially along the heat sink. The cooling module also includes a first cover fixed to one side port of the ventilation cavity near the cooling module, the first cover being attached to the cooling fin. A blower module is installed inside the ventilation cavity and connected to the connecting bracket; the blower module is used to guide airflow into the cooling module, and the airflow forms cold air after passing through the cooling module.

2. The cooling fan according to claim 1, characterized in that, The cooling module also includes a mounting bracket connected to the connecting bracket; the mounting bracket is disc-shaped and has a mounting groove extending axially along the ventilation cavity and passing through both ends; the cooling plate and the first heat sink are fixed in the mounting groove, the second heat sink is attached to the side of the mounting bracket near the first heat sink, and the first cover is attached to the side of the mounting bracket near the cooling plate.

3. The cooling fan according to claim 2, characterized in that, The connecting bracket includes a connecting ring, a connecting seat disposed inside the connecting ring, and a support arm disposed between the connecting ring and the connecting seat; the cooling module and the blowing module are respectively connected to both sides of the connecting seat, and the connecting ring is connected to the inner wall of the ventilation cavity.

4. The cooling fan according to claim 3, characterized in that, The connecting base has multiple positioning posts on the side facing the cooling module, the second heat sink has multiple positioning holes, and the mounting bracket has multiple mounting holes; the positioning posts, positioning holes, and mounting holes are one-to-one corresponding and coaxially arranged; the positioning posts pass through the positioning holes and are inserted into the mounting holes to realize the assembly connection of the connecting bracket, the second heat sink, and the mounting bracket.

5. The cooling fan according to claim 3, characterized in that, The connecting seat has a recessed groove on the side facing the cooling module, the second heat sink is snapped into the recessed groove, and the end of the support column away from the heat sink abuts against the inner wall of the connecting ring.

6. The cooling fan according to claim 3, characterized in that, The support arms are arranged in a circular array on the outer wall of the connecting seat, and the support columns are spaced apart from the support arms.

7. The cooling fan according to claim 3, characterized in that, The outer wall of the mounting bracket extends to provide a positioning element, and the inner wall of the connecting ring is provided with a positioning notch; the positioning element cooperates with the positioning notch to achieve mutual positioning between the mounting bracket and the connecting support.

8. The cooling fan according to claim 1, characterized in that, The ventilation cavity has a second cover on one side port near the blower module.

9. The cooling fan according to claim 1, characterized in that, The blower module includes a drive element and a rotating base connected by a drive connection; the drive element is connected to a connecting bracket, and the rotating base has fan blades on its outer side; the drive element drives the rotating base and fan blades to rotate, so as to guide the airflow.

10. The cooling fan according to claim 1, characterized in that, The bottom of the housing is provided with a handle, and an electronic control module is provided on the inner side of the handle. The electronic control module is electrically connected to the cooling chip and the blower module.

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