Refrigeration fan

Abstract

The utility model relates to the technical field of fans, in particular to a refrigeration fan. A shell of the refrigeration fan comprises a front shell body and a rear shell body which are oppositely arranged, one end of the front shell body is provided with an installation part and a plurality of grid bars arranged around the installation part at intervals, an air outlet is formed between every two adjacent grid bars, the ends, connected with the installation part, of the grid bars are concavely provided with containing grooves towards the rear shell body, and a fan assembly is arranged on the side, facing the installation part, of the rear shell body so as to blow air towards the air outlets. The refrigeration sheet is arranged in the mounting part and comprises a heat dissipation surface facing the fan assembly and a refrigeration surface opposite to the fan assembly, the heat dissipation sheet comprises a main body part and a plurality of fins arranged around the main body part at intervals, and the main body part is arranged on the side, facing the fan assembly, of the mounting part so as to absorb heat of the heat dissipation surface; and the plurality of fins are respectively and correspondingly accommodated in the accommodating grooves of the plurality of grids. Due to the fact that the fins are correspondingly contained in the containing grooves of the grid bars, the fins can be embedded in the grid bars in an attached mode and are flush with the edges of the grid bars, the fins are prevented from disturbing air outlet, and the heat dissipation effect and the refrigeration effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a cooling fan. Background Technology

[0002] Conventional fans generate airflow by rotating blades, which then comes into contact with the human body to remove some heat. However, this method provides limited cooling and cannot quickly lower the skin's temperature. Therefore, cooling fans have emerged. These fans have cooling fins on their exhaust casing, with heat sinks connected to the hot side of the cooling fins. The fan blades blow the heat absorbed by the heat sinks through the air outlet between the slats of the exhaust casing, allowing the cold side of the cooling fins to cool rapidly. This allows the cold side of the cooling fins to adhere to the skin, providing quick cooling for the user.

[0003] The drawback of the existing technology is that, in order to increase the heat dissipation area of ​​the heat sink, the heat sink in the existing technology usually has fins extending towards the position between the fan blades and the air outlet. However, since the fins are located in the air outlet path of the fan blades, the fins will disturb the air outlet of the fan blades, thereby reducing the air outlet efficiency, resulting in limited heat dissipation effect and affecting the cooling effect. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a cooling fan to solve the problem in the prior art where fins disturb the airflow and affect the heat dissipation effect.

[0005] The cooling fan provided in this embodiment of the utility model includes: a housing, comprising a front housing and a rear housing disposed opposite to each other, one end of the front housing having a mounting portion and a plurality of gratings spaced apart around the mounting portion, an air outlet being formed between two adjacent gratings, and the end of the gratings connected to the mounting portion having a recessed receiving groove facing the rear housing; a fan assembly, disposed on the side of the rear housing facing the mounting portion, for blowing air towards the air outlet; a cooling fin, disposed within the mounting portion, the cooling fin including a heat dissipation surface facing the fan assembly and a cooling surface facing away from the fan assembly; and a heat sink, comprising a main body and a plurality of fins spaced apart around the main body, the main body being disposed on the side of the mounting portion facing the fan assembly to absorb heat from the heat dissipation surface, and the plurality of fins being respectively received in the receiving grooves of the plurality of gratings.

[0006] Optionally, the receiving groove is an L-shaped through groove, the bottom of the receiving groove is flush with the mounting part, and an abutment wall is formed at the end of the receiving groove away from the mounting part, the abutment wall abutting against the fin.

[0007] Optionally, the mounting part is provided with a mounting post, and the main body is provided with a mounting hole, and the mounting post is inserted into the mounting hole.

[0008] Optionally, the mounting part is provided with a mounting groove, a first opening on the side of the mounting groove facing the main body, and a second opening on the side facing away from the main body. The cooling chip is installed in the mounting groove, the heat dissipation surface is attached to the main body through the first opening, and the cooling surface is exposed outside the mounting part through the second opening.

[0009] Optionally, the mounting portion has a boss protruding from the grille on the side opposite to the heat dissipation surface, the second port is located on the boss, and the cooling surface is exposed outside the boss.

[0010] Optionally, the cooling fan further includes a cooling cover, which is disposed on the protrusion and fits against the cooling surface.

[0011] Optionally, the mounting part is provided with a first wire guide bar communicating with the mounting cavity. The first wire guide bar is used to pass through a first wire so as to connect the cooling chip and the control circuit board.

[0012] Optionally, the rear housing is provided with a second wire guide bar that communicates with the mounting cavity. The second wire guide bar is used to pass through a second wire so as to connect the fan assembly and the control circuit board.

[0013] Optionally, a hanging ring is provided at the end of the front housing away from the cooling chip.

[0014] Compared with the prior art, the beneficial effects of the cooling fan provided by this utility model embodiment are as follows: The cooling fan includes a housing, a fan assembly, a cooling plate, and a heat sink. The housing includes a front shell and a rear shell arranged opposite to each other. One end of the front shell is provided with a mounting part and a plurality of gratings spaced around the mounting part. An air outlet is formed between two adjacent gratings. The end of the grating that connects to the mounting part is recessed into the rear shell with a receiving groove. The fan assembly is located on the side of the rear shell facing the mounting part and is used to blow air towards the air outlet. The cooling plate is located in the mounting part and includes a heat dissipation surface facing the fan assembly and a cooling surface facing away from the fan assembly. The heat sink includes a main body and a plurality of fins spaced around the main body. The main body is located on the side of the mounting part facing the fan assembly to absorb heat from the heat dissipation surface. The plurality of fins are respectively received in the receiving grooves of the plurality of gratings. Therefore, the heat from the heat dissipation surface can be conducted to the fins through the main body of the heat sink, and the heat from the fins can be blown out of the air outlet by the air blown out by the fan assembly. Since the end of the grille that connects to the mounting part has a recessed receiving groove facing the rear shell, several fins are respectively received in the receiving grooves of several grilles. Therefore, the fins can be fitted and embedded on the grille and flush with the edges of the grille, thereby preventing the air blown out by the fan assembly from flowing between the fins and the grille, improving the air outlet efficiency, thereby improving the heat dissipation effect of the fan assembly on the fins and increasing the cooling effect of the cooling plate. Attached Figure Description

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. In the accompanying drawings:

[0016] Figure 1 This is a three-dimensional schematic diagram of the cooling fan provided in an embodiment of the present utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the internal structure of the cooling fan provided in this embodiment of the utility model;

[0018] Figure 3 This is a partial exploded view of the cooling fan provided in an embodiment of the present invention;

[0019] Figure 4 This is a partial exploded view of the cooling fan provided in an embodiment of the present invention;

[0020] Figure 5 yes Figure 4 Enlarged view of a portion of position A in the middle;

[0021] Figure 6 This is an exploded view of the cooling fan provided in an embodiment of this utility model.

[0022] The labels for the attached figures are as follows:

[0023] 100. Cooling fan;

[0024] 1. Housing; 11. Front housing; 111. Mounting part; 1111. Mounting post; 1112. Mounting groove; 1112a. First opening; 1112b. Second opening; 1113. Boss; 1114. First wire guide bar; 112. Grille; 1121. Receiving groove; 1121a. Abutment wall; 113. Air outlet; 114. Mounting cavity; 12. Rear housing; 121. Second wire guide bar; 2. Fan assembly; 21. Motor; 22. Fan wheel; 3. Cooling plate; 31. Heat dissipation surface; 32. Cooling surface; 4. Heat dissipation fin; 41. Main body; 411. Mounting hole; 42. Fin; 5. Cooling cover; 6. Control circuit board; 7. Battery; 8. Hanging ring. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] This utility model embodiment provides a cooling fan 100, such as Figures 1 to 6As shown, the cooling fan 100 includes a housing 1, a fan assembly 2, a cooling plate 3, and a heat sink 4. The housing 1 includes a front housing 11 and a rear housing 12 arranged opposite to each other. One end of the front housing 11 is provided with a mounting part 111 and a plurality of gratings 112 spaced around the mounting part 111. An air outlet 113 is formed between two adjacent gratings 112. The end of the grating 112 that connects to the mounting part 111 is recessed into the rear housing 12 with a receiving groove 1121. The fan assembly 2 is located on the side of the rear housing 12 facing the mounting part 111 and is used to blow air towards the air outlet 113. The cooling plate 3 is located in the mounting part 111 and includes a heat dissipation surface 31 facing the fan assembly 2 and a cooling surface 32 facing away from the fan assembly 2. The heat sink 4 includes a main body 41 and a plurality of fins 42 spaced around the main body 41. The main body 41 is located on the side of the mounting part 111 facing the fan assembly 2 to absorb the heat from the heat dissipation surface 31. The plurality of fins 42 are respectively received in the receiving grooves 1121 of the plurality of gratings 112.

[0027] Specifically, one end of the front shell 11 is provided with a mounting portion 111 and a plurality of gratings 112 spaced around the mounting portion 111. An air outlet 113 is formed between two adjacent gratings 112. The fan assembly 2 is located on the side of the rear shell 12 facing the mounting portion 111 and is used to blow air towards the air outlet 113. The cooling plate 3 is located inside the mounting portion 111. The cooling plate 3 includes a heat dissipation surface 31 facing the fan assembly 2 and a cooling surface 32 facing away from the fan assembly 2. The heat dissipation plate 4 includes a main body portion 41 and a plurality of fins 42 spaced around the main body portion 41. The main body portion 41 is located on the side of the mounting portion 111 facing the fan assembly 2 so that the main body portion 41 can absorb the heat generated by the heat dissipation surface 31 of the cooling plate 3 and conduct it to the fins 42. Thus, the heat on the fins 42 is blown out from the air outlet 113 by the air blown out by the fan assembly 2, ensuring the cooling effect of the cooling surface 32 of the cooling plate 3. Therefore, when using the cooling fan 100, the user can directly attach the mounting part 111 to the skin and use the cooling surface 32 to achieve a cooling effect, allowing the user to cool down quickly.

[0028] Furthermore, since the end of the grille 112 that connects to the mounting part 111 is recessed into the rear shell 12 with a receiving groove 1121, and several fins 42 are respectively received in the receiving grooves 1121 of several grilles 112, the fins 42 can be fitted and embedded in the grille 112 and flush with each edge of the grille 112, thereby preventing the air blown out by the fan assembly 2 from flowing between the fins 42 and the grille 112. This can improve the air outlet efficiency and enhance the heat dissipation effect of the fan assembly 2 on the fins 42, so that the cooling surface 32 can maintain a lower cooling temperature and improve the cooling effect. On the other hand, it can prevent the air blown out by the fan assembly 2 from colliding and rubbing between the fins 42 and the grille 112, thereby effectively reducing the noise generated by the cooling fan 100.

[0029] It is worth mentioning that, such as Figure 6 As shown, the rear shell 12 is provided with a rear shell mounting part and a rear shell grille corresponding to the mounting part 111 and grille 112 of the front shell 11, so that an air inlet corresponding to the air outlet 113 can be formed between two adjacent rear shell grilles. The fan assembly 2 includes a drive motor 21 and a fan wheel 22. The drive motor 21 is mounted on the rear shell mounting part, and the fan wheel 22 is mounted on the output shaft of the drive motor 21, so that when the drive motor 21 drives the fan wheel 22 to rotate, it can draw in outside air from the air inlet and blow it out toward the air outlet 113, thereby effectively dissipating heat from the heat sink 4.

[0030] As a preferred embodiment of this invention, such as Figures 1 to 3 As shown, the receiving groove 1121 is an L-shaped through groove. The bottom of the receiving groove 1121 is flush with the mounting part 111. An abutment wall 1121a is formed at the end of the receiving groove 1121 away from the mounting part 111, and the abutment wall 1121a abuts against the fin 42.

[0031] Specifically, the receiving groove 1121 is an L-shaped through groove. The bottom of the receiving groove 1121 is flush with the mounting part 111. An abutment wall 1121a is formed at the end of the receiving groove 1121 away from the mounting part 111. The abutment wall 1121a abuts against the fin 42. Thus, after the main body 41 of the heat sink 4 is installed on the mounting part 111, the bottom wall of the fin 42 can fit tightly against the bottom of the receiving groove 1121. The end of the fin 42 away from the main body 41 can abut against the abutment wall 1121a, so that the fin 42 can be stably received in the receiving groove 1121 and flush with each edge of the grid 112. At the same time, it ensures that the side walls and top wall of the fin 42 can be exposed so that when the fan assembly 2 blows air towards the air outlet 113, the heat on the fin 42 can be carried out, ensuring the heat dissipation effect of the fin 42.

[0032] As a preferred embodiment of this invention, such as Figures 2 to 3 As shown, the mounting part 111 is provided with a mounting post 1111, and the main body part 41 is provided with a mounting hole 411, and the mounting post 1111 is inserted into the mounting hole 411.

[0033] Specifically, the mounting part 111 is provided with a mounting post 1111, and the main body 41 is provided with a corresponding mounting hole 411. The mounting post 1111 is inserted into the mounting hole 411 so that the mounting part 111 can be stably mounted on the mounting part 111, while the fin 42 is stably accommodated in the receiving groove 1121.

[0034] As a preferred embodiment of this invention, such as Figures 3 to 6As shown, the mounting part 111 is provided with a mounting groove 1112. The mounting groove 1112 has a first opening 1112a on the side facing the main body part 41 and a second opening 1112b on the side facing away from the main body part 41. The cooling chip 3 is installed in the mounting groove 1112. The heat dissipation surface 31 is attached to the main body part 41 through the first opening 1112a, and the cooling surface 32 is exposed outside the mounting part 111 through the second opening 1112b.

[0035] Specifically, the mounting part 111 is provided with a mounting groove 1112 so that the cooling chip 3 can be installed in the mounting groove 1112. The mounting groove 1112 has a first opening 1112a on the side facing the main body 41 and a second opening 1112b on the side facing away from the main body 41. Thus, the heat dissipation surface 31 of the cooling chip 3 can be exposed outside the mounting part 111 through the first opening 1112a so as to directly fit with the main body 41 of the heat sink 4, thereby improving the heat absorption efficiency of the main body 41 on the heat dissipation surface 31. The cooling surface 32 of the cooling chip 3 can be exposed outside the mounting part 111 through the second opening 1112b, thereby preventing the mounting part 111 from reducing the cooling effect of the cooling surface 32.

[0036] As a preferred embodiment of this invention, such as Figures 4 to 5 As shown, a boss 1113 protruding from the grille 112 is formed on the side of the mounting part 111 away from the heat dissipation surface 31. The second opening 1112b is located on the boss 1113, and the cooling surface 32 is exposed outside the boss 1113.

[0037] Specifically, a boss 1113 protruding from the grille 112 is formed on the side of the mounting part 111 away from the heat dissipation surface 31. The second opening 1112b is located on the boss 1113, and the cooling surface 32 is exposed outside the boss 1113. This ensures that the cooling surface 32 on the boss 1113 is in contact with the user's skin for cooling, while preventing the grille 112 from pressing against the user's skin, thus increasing the user's comfort.

[0038] As a preferred embodiment of this invention, such as Figure 1 , Figure 4 and Figure 6 As shown, the cooling fan 100 also includes a cooling cover 5, which is mounted on the boss 1113 and fits against the cooling surface 32.

[0039] Specifically, the cooling cover 5 is positioned on the protrusion 1113 and fits against the cooling surface 32. When the user's skin comes into contact with the cooling cover 5, the cooling cover 5 can efficiently and evenly transfer the cold energy on the cooling surface 32 to the skin to cool it down. At the same time, it can prevent the cooling surface 32 from directly contacting the skin and prevent the skin from being stimulated due to excessively low temperature.

[0040] As a preferred embodiment of this invention, such as Figure 2 , Figure 3 and Figure 6 As shown, the cooling fan 100 also includes a control circuit board 6 and a battery 7. The other end of the front shell 11 and the rear shell 12 define a mounting cavity 114. The control circuit board 6 and the battery 7 are disposed in the mounting cavity 114. The battery 7, the fan assembly 2, and the cooling chip 3 are all electrically connected to the control circuit board 6.

[0041] Specifically, the other end of the front housing 11 and the rear housing 12 define a mounting cavity 114 to provide mounting space for the control circuit board 6 and the battery 7, allowing the control circuit board 6 and the battery 7 to be sealed and installed inside the housing 1. The battery 7, the fan assembly 2, and the cooling chip 3 are all electrically connected to the control circuit board 6, thereby enabling the control circuit board 6 to control the power supply from the battery 7 to the fan assembly 2 and the cooling chip 3, thus controlling the operation of the fan assembly 2 and the cooling chip 3.

[0042] It is worth mentioning that the control fan assembly 2 and the cooling element 3 can be connected in series with the control circuit board 6, allowing users to control the on / off operation of both the fan assembly 2 and the cooling element 3 simultaneously with a single button. Alternatively, the control fan assembly 2 and the cooling element 3 can be connected in parallel with the control circuit board 6, allowing users to adjust the operating mode of the cooling fan 100 as needed. When rapid cooling is required, the cooling mode can be selected, simultaneously turning on the fan assembly 2 and the cooling element 3 to achieve a cooling effect using the cooling surface 32 for rapid cooling. After rapid cooling, the blowing mode can be selected, turning on the fan assembly 2 alone for regular blowing cooling. This allows users to flexibly choose different operating modes according to actual needs, switching between rapid cooling and regular cooling, improving the applicability of the cooling fan 100 and the user experience.

[0043] As a preferred embodiment of this invention, such as Figures 1 to 6 As shown, the mounting part 111 is provided with a first wire guide bar 1114 that communicates with the mounting cavity 114. The first wire guide bar 1114 is used to pass through the first wire so that the cooling chip 3 and the control circuit board 6 are connected.

[0044] Specifically, the mounting part 111 is provided with a first wire guide bar 1114 that communicates with the mounting cavity 114. The first wire guide bar 1114 can form a wiring channel for the first wire to pass through, so that the first wire can connect the cooling chip 3 and the control circuit board 6 without being exposed to the outside world, thus avoiding damage to the first wire and ensuring the overall aesthetic appearance of the cooling fan 100.

[0045] As a preferred embodiment of this invention, such as Figure 6 As shown, the rear housing 12 is provided with a second wire guide strip 121 that communicates with the mounting cavity 114. The second wire guide strip 121 is used to pass through the second wire so that the fan assembly 2 and the control circuit board 6 can be connected.

[0046] Specifically, the rear cover 12 is provided with a second wire guide strip 121 that communicates with the mounting cavity 114. The second wire guide strip 121 can form a wiring channel for the second wire to pass through, so that the second wire can connect to the fan assembly 2 and the control circuit board 6 without being exposed to the outside, thus avoiding damage to the second wire and ensuring the overall aesthetic appearance of the cooling fan 100.

[0047] As a preferred embodiment of this invention, such as Figures 1 to 3 As shown, a hanging ring 8 is provided at the end of the front shell 11 away from the cooling chip 3.

[0048] Specifically, a hanging ring 8 is provided at the end of the front shell 11 away from the cooling plate 3, so that the user can hang a lanyard on the hanging ring 8 according to their preference, so that it can be hung around the neck when going out, making it convenient to carry and use.

[0049] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A cooling fan, characterized in that, include: The housing includes a front housing and a rear housing disposed opposite to each other. One end of the front housing is provided with a mounting part and a plurality of grilles spaced apart around the mounting part. An air outlet is formed between two adjacent grilles. The end of the grille that connects to the mounting part is recessed into the rear housing with a receiving groove. A fan assembly is located on the side of the rear housing facing the mounting portion and is used to blow air toward the air outlet. A cooling element is disposed within the mounting portion, the cooling element comprising a heat dissipation surface facing the fan assembly and a cooling surface facing away from the fan assembly; A heat sink includes a main body and a plurality of fins spaced apart around the main body. The main body is located on the side of the mounting portion facing the fan assembly to absorb heat from the heat dissipation surface. The plurality of fins are respectively housed in the receiving grooves of the plurality of grilles so that the fins and the grilles are flush.

2. The cooling fan according to claim 1, characterized in that, The receiving groove is an L-shaped through groove, the bottom of the receiving groove is flush with the mounting part, and an abutment wall is formed at the end of the receiving groove away from the mounting part, the abutment wall abuts against the fin.

3. The cooling fan according to claim 2, characterized in that, The mounting part is provided with a mounting post, and the main body is provided with a mounting hole, and the mounting post is inserted into the mounting hole.

4. The cooling fan according to claim 1, characterized in that, The mounting part is provided with a mounting groove, a first opening on the side of the mounting groove facing the main body, and a second opening on the side facing away from the main body. The cooling chip is installed in the mounting groove, the heat dissipation surface is attached to the main body through the first opening, and the cooling surface is exposed outside the mounting part through the second opening.

5. The cooling fan according to claim 4, characterized in that, The mounting part has a boss protruding from the grid on the side opposite to the heat dissipation surface, the second port is located on the boss, and the cooling surface is exposed outside the boss.

6. The cooling fan according to claim 5, characterized in that, It also includes a cooling cover, which is mounted on the protrusion and fits against the cooling surface.

7. The cooling fan according to any one of claims 1-6, characterized in that, It also includes a control circuit board and a battery. The other end of the front shell and the rear shell define a mounting cavity. The control circuit board and the battery are disposed in the mounting cavity. The battery, the fan assembly, and the cooling chip are all electrically connected to the control circuit board.

8. The cooling fan according to claim 7, characterized in that, The mounting section is provided with a first wire guide bar that communicates with the mounting cavity. The first wire guide bar is used to pass through a first wire so as to connect the cooling chip and the control circuit board.

9. The cooling fan according to claim 7, characterized in that, The rear housing is provided with a second wire guide bar that communicates with the mounting cavity. The second wire guide bar is used to pass through a second wire so as to connect the fan assembly and the control circuit board.

10. The cooling fan according to any one of claims 1-6, characterized in that, The front housing is provided with a hanging ring at the end away from the cooling chip.

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