A handheld cooling fan

Abstract

The utility model discloses a handheld refrigeration fan belongs to portable electric appliance technical field, including handle, head shell, circuit control module, cold end module and hot end module, the circuit control module is installed on handle, the lower extreme of head shell is integrative and has the connecting block, the centre of head shell inner chamber is provided with the baffle, the centre of baffle surface installs with the Peltier semiconductor of cold end module and hot end module cooperation use, divides the internal cavity of head shell through setting baffle, divides out the cold air duct and hot air duct that do not communicate with each other, and the independent cold end fan and hot end fan are matched, make the cold air that cold end produces can directly from the front air outlet blow to the user, and the heat that hot end absorbs then exports from the independent exhaust port of side rear, ensure that the temperature that blows to the user is the pure cold wind that is significantly lower than ambient temperature, thereby realize efficient refrigeration function, solved the problem that the existing product power consumption block has no refrigeration effect.

Description

Technical Field

[0001] This utility model relates to the field of portable electrical appliance technology, specifically a handheld cooling fan. Background Technology

[0002] Handheld fans are a common portable tool for cooling during summer outdoor activities. To enhance the cooling effect, "cooling fans" integrating Peltier semiconductors (TEC) have appeared on the market. However, these products have technical flaws. They typically only have one fan at the hot end. While dissipating heat from the hot end, this fan also blows the generated hot air towards the heat sink at the cold end, ultimately mixing the hot and cold air. This mixed airflow is then blown towards the user. This design leads to two serious consequences:

[0003] 1. Cooling failure: The cold air generated at the cold end is instantly neutralized by the hot air blown out at the hot end. At the same time, due to the power consumption of the semiconductor itself, the actual temperature of the blown air is higher than the ambient temperature.

[0004] 2. Extremely low energy efficiency: TEC consumes a large amount of electrical energy without producing any effective cooling effect, thus accelerating the rate of power consumption;

[0005] Therefore, in order to solve the problems mentioned above, an improved handheld cooling fan has been proposed. Utility Model Content

[0006] The purpose of this invention is to provide a handheld cooling fan that is compact, energy efficient, and truly capable of blowing out cool air, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a handheld cooling fan, comprising a handle, a head shell, a circuit control module, a cold end module, and a hot end module;

[0008] The circuit control module is mounted on the handle, and the lower end of the head shell is integrally formed with a connecting block, which is movably connected to one side of the top of the handle.

[0009] The cold end module and the hot end module are installed at both ends of the inner cavity of the head shell;

[0010] A partition is provided at the center of the inner cavity of the head shell, and a Peltier semiconductor for use with the cold end module and the hot end module is installed at the center of the surface of the partition.

[0011] Preferably, the two sides of the Peltier semiconductor are respectively attached to the cold end module and the hot end module, and the partition divides the space of the head shell into a cold air duct and a hot air duct.

[0012] Preferably, the cold end module includes a cold end heat sink and a cold end fan. The cold end heat sink is attached to the cold end of the Peltier semiconductor, and the cold end fan is installed at the end of the cold end heat sink away from the Peltier semiconductor. A cold air duct inlet is provided on the surface of the head housing near the cold end fan.

[0013] Preferably, the hot end module includes a hot end heat sink and a hot end fan. The hot end heat sink is attached to the hot end of the Peltier semiconductor, and the hot end fan is installed at the end of the hot end heat sink away from the Peltier semiconductor. A hot air duct inlet is provided on the surface of the head shell near the hot end fan.

[0014] Preferably, the air outlet of the cold air duct is equipped with a cold end protective cover, and the air outlet of the hot air duct is equipped with a hot end protective cover.

[0015] Preferably, both the cold-end module and the hot-end module are electrically connected to the circuit control module, the Peltier semiconductor is electrically connected to both the cold-end module and the hot-end module, and the circuit control module is electrically connected to the Peltier semiconductor.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model provides a handheld cooling fan. By setting a partition, the internal cavity of the head shell is divided into separate cold air ducts and hot air ducts. With independent cold-end fans and hot-end fans, the cold air generated by the cold end can be blown directly to the user from the front air outlet, while the heat absorbed by the hot end is discharged from the independent exhaust port on the side and rear. This ensures that the air blown to the user is pure cold air with a temperature significantly lower than the ambient temperature, thereby achieving a highly efficient cooling function and solving the problem of existing products consuming power quickly and having no cooling effect.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the cold air outlet state of the handheld fan structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the hot air outlet state of the handheld fan structure of this utility model.

[0021] Figure 3 This is an exploded view of the head shell, cold end module, and hot end module of this utility model.

[0022] Figure 4This is a partial cross-sectional view of the head shell structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the cold end module, partition, and hot end module of this utility model;

[0024] Figure 6 This is a partial cross-sectional view of the head shell structure of this utility model.

[0025] The diagram is labeled as follows: 1. Handle; 2. Head shell; 3. Circuit control module; 4. Cold end module; 41. Cold end heat sink; 42. Cold end fan; 43. Cold air duct inlet; 5. Hot end module; 51. Hot end heat sink; 52. Hot end fan; 53. Hot air duct inlet; 6. Connecting block; 7. Partition; 8. Peltier semiconductor; 9. Cold air duct; 10. Hot air duct; 11. Cold end protective cover; 12. Hot end protective cover. Detailed Implementation

[0026] 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.

[0027] This utility model provides, for example Figures 1-6 The handheld cooling fan shown includes a handle 1, a head shell 2, a circuit control module 3, a cold end module 4, and a hot end module 5;

[0028] The circuit control module 3 is installed on the handle 1, and the lower end of the head shell 2 is integrally formed with a connecting block 6, which is movably connected to one side of the top of the handle 1.

[0029] The cold end module 4 and the hot end module 5 are installed at both ends of the inner cavity of the head shell 2;

[0030] A partition 7 is provided at the center of the inner cavity of the head shell 2, and a Peltier semiconductor 8 for use with the cold end module 4 and the hot end module 5 is installed at the center of the surface of the partition 7.

[0031] The handheld fan uses the handle 1 as the basic support component. The circuit control module 3 is installed on the handle 1, providing control and power transmission functions for the overall operation of the fan. The head shell 2 is movably connected to the top side of the handle 1 through the integrated connecting block 6 at the lower end, which can realize the angle adjustment of the head shell 2 relative to the handle 1, making it convenient for users to adjust the airflow direction. The cold end module 4 and the hot end module 5 are respectively installed at both ends of the inner cavity of the head shell 2. The two are the core heat exchange components of the fan. The partition 7 in the center of the inner cavity of the head shell 2 plays a role in spatial separation. The Peltier semiconductor 8 installed in the center of its surface works with the cold end module 4 and the hot end module 5. When the Peltier semiconductor 8 is powered on, it can realize the heat transfer between the cold end and the hot end, providing the core power for the cooling function.

[0032] By integrating the circuit control module 3 into the handle 1, the control component and the grip component are combined, making operation more convenient. The movable connection design between the head shell 2 and the handle 1 breaks the limitation of fixed airflow direction, allowing users to flexibly adjust the angle according to the usage scenario, thus improving the flexibility of use. The coordinated layout of the cold end module 4, the hot end module 5, and the Peltier semiconductor 8 lays the foundation for the fan's cooling function. At the same time, the partition 7 provides structural support for subsequent hot and cold air isolation, ensuring that each core component has a clear division of labor and works in concert, thus guaranteeing the realization of the fan's basic operating functions.

[0033] The two sides of Peltier Semiconductor 8 are respectively attached to the cold end module 4 and the hot end module 5, and the partition 7 divides the space of the head shell 2 into cold air duct 9 and hot air duct 10.

[0034] The Peltier semiconductor 8 is tightly bonded to the cold end module 4 and the hot end module 5 on both sides. This bonding design can minimize heat transfer loss, so that the cold energy generated by the cold end of the Peltier semiconductor 8 can be efficiently transferred to the cold end module 4, and the heat generated by the hot end can be quickly conducted to the hot end module 5. The partition 7 divides the interior of the head shell 2 into independent cold air channels 9 and hot air channels 10. The cold air generated by the cold end module 4 only flows in the cold air channel 9, and the hot air generated by the hot end module 5 only diffuses in the hot air channel 10, thus preventing the mixing of cold and hot air in space.

[0035] The integrated design of Peltier Semiconductor 8 with cold end module 4 and hot end module 5 improves the efficiency of heat and cold transfer, ensuring that the cooling performance of Peltier Semiconductor 8 is fully utilized. The independent separation of cold air duct 9 and hot air duct 10 fundamentally solves the problem of cooling failure caused by the mixing of cold and hot air in traditional handheld cooling fans. It provides a key structural guarantee for blowing out pure cold air, avoids the cold air being neutralized by the hot air, and ensures the cooling effect.

[0036] The cold end module 4 includes a cold end heat sink 41 and a cold end fan 42. The cold end heat sink 41 is attached to the cold end of the Peltier semiconductor 8. The cold end fan 42 is installed at the end of the cold end heat sink 41 away from the Peltier semiconductor 8. A cold air duct inlet 43 is provided on the surface of the head housing 2 near the cold end fan 42.

[0037] The cold end heat sink 41 is attached to the cold end of the Peltier semiconductor 8, which can quickly absorb the cold air generated by the cold end of the Peltier semiconductor 8 and evenly distribute it to its own fin structure; the cold end fan 42 is installed at the end of the cold end heat sink 41 away from the Peltier semiconductor 8. When the cold end fan 42 is running, it will draw in the external ambient air through the cold air duct inlet 43 on the surface of the head housing 2, forcing the air to pass through the fins of the cold end heat sink 41. The air is cooled during the contact with the fins of the cold end heat sink 41, and finally forms cold air and blows it to the user.

[0038] The cold end heat sink 41 increases the contact area between the cooling energy and the air, improving the air cooling efficiency. The combination of the cold end fan 42 and the cold air duct inlet 43 creates a stable path for the generation and delivery of cold air, ensuring that the outside air can enter in an orderly manner and be effectively cooled, guaranteeing a continuous and stable output of cold air, allowing users to continuously feel coolness and improving the user experience.

[0039] The hot end module 5 includes a hot end heat sink 51 and a hot end fan 52. The hot end heat sink 51 is attached to the hot end of the Peltier semiconductor 8. The hot end fan 52 is installed at the end of the hot end heat sink 51 away from the Peltier semiconductor 8. A hot air duct inlet 53 is provided on the surface of the head housing 2 near the hot end fan 52.

[0040] The hot-end heat sink 51 is attached to the hot end of the Peltier semiconductor 8, which can absorb a large amount of heat generated by the hot end during the operation of the Peltier semiconductor 8 and distribute the heat to its own fins. The hot-end fan 52 is installed at the end of the hot-end heat sink 51 away from the Peltier semiconductor 8. When the hot-end fan 52 is running, it draws in external air through the hot air duct inlet 53 on the surface of the head housing 2. When the air flows through the fins of the hot-end heat sink 51, it will take away the heat on the fins and convert it into hot air. Then the hot air is driven by the hot-end fan 52 and discharged outside the fan.

[0041] The hot-end heat sink 51 can efficiently gather and conduct heat from the hot end of the Peltier semiconductor 8, preventing heat from accumulating at the hot end of the Peltier semiconductor 8 and affecting its cooling performance. The hot-end fan 52 and the hot air duct inlet 53 work together to form an independent heat dissipation path, which can quickly expel heat from the outside of the device. This not only ensures the continuous and stable operation of the Peltier semiconductor 8, but also prevents heat from spreading inside the device and affecting the cooling effect, further improving the overall cooling efficiency of the fan.

[0042] The cold air duct 9 is equipped with a cold end protective cover 11 at its air outlet, and the hot air duct 10 is equipped with a hot end protective cover 12 at its air outlet.

[0043] The cold end protective cover 11 is installed at the air outlet of the cold air duct 9, which physically shields the cold end module 4 inside the air outlet of the cold air duct 9 without obstructing the normal blowing of cold air; the hot end protective cover 12 is installed at the air outlet of the hot air duct 10, which similarly shields and protects the hot end module 5 inside the hot air duct 10 without affecting the exhaust of hot air.

[0044] The cold end protective cover 11 and the hot end protective cover 12 can effectively prevent external debris from entering the cold air duct 9 and the hot air duct 10, avoid debris from adhering to the heat sink fins or fan blades and affecting heat dissipation, cooling efficiency and fan operation stability, and extend the service life of the cold end module 4 and the hot end module 5. At the same time, the protective cover can also prevent users from accidentally touching the internal components of the air duct during use, and improve the safety of equipment use.

[0045] Both the cold end module 4 and the hot end module 5 are electrically connected to the circuit control module 3. The Peltier semiconductor 8 is electrically connected to both the cold end module 4 and the hot end module 5. The circuit control module 3 is electrically connected to the Peltier semiconductor 8.

[0046] Both the cold-end module 4 and the hot-end module 5 are electrically connected to the circuit control module 3. The circuit control module 3 can transmit power and send control signals to the cold-end module 4 (such as the cold-end fan 42) and the hot-end module 5 (such as the hot-end fan 52) to adjust the speed of the cold-end fan 42 and the hot-end fan 52. The Peltier semiconductor 8 is electrically connected to the cold-end module 4, the hot-end module 5 and the circuit control module 3. The circuit control module 3 can directly control the power supply and power of the Peltier semiconductor 8. At the same time, the Peltier semiconductor 8 is electrically connected to the cold-end module 4 and the hot-end module 5 to ensure that the three can respond to control commands in a coordinated manner during operation. For example, when the power of the Peltier semiconductor 8 is adjusted, the speed of the cold-end fan 42 and the hot-end fan 52 can be adjusted accordingly.

[0047] Through the electrical connection between multiple components, the circuit control module 3 achieves centralized control of the core fan component. Users can flexibly adjust the cooling intensity and airflow speed through the operating components (such as the control panel) on the circuit control module 3 to meet the usage needs in different scenarios. At the same time, when the battery power is low, the circuit control module 3 can prioritize the operation of the cold end fan 42, so that the device can switch to normal fan mode, avoiding the device from becoming completely unusable due to insufficient power, extending the device's battery life and practical value, and improving the device's usage flexibility.

[0048] In actual use, the user first holds the device with the handle 1, and adjusts the head shell 2 to a comfortable airflow angle using the movable connection structure between the lower connecting block 6 and the handle 1. After the device is turned on, the circuit control module 3 supplies power to the Peltier semiconductor 8, the cold end module 4, and the hot end module 5. After the Peltier semiconductor 8 is powered on, the cold end generates cold air and the hot end generates heat air. Both sides are in close contact with the cold end heat sink 41 and the hot end heat sink 51, respectively, to efficiently transfer cold and heat. The cold end fan 42 operates, drawing in ambient air through the cold air duct inlet 43 of the head shell 2. After the air flows through the cold end heat sink 41 and is cooled, it is blown towards the user from the cold air duct outlet 9 (with cold end protective cover 11). At the same time, the hot end fan 52 operates, blowing hot air through the hot air duct. Air is drawn in through the air inlet 53. After the air flows through the hot end heat sink 51 and absorbs heat, it is discharged from the hot air outlet 10 (with hot end protective cover 12). The cold air duct 9 and the hot air duct 10 separated by the partition 7 ensure that the cold and hot air do not mix. During use, the user can adjust the cooling intensity (power of Peltier semiconductor 8) and the speed of the cold and hot end fans 52 through the circuit control module 3. If the battery power is low, the cold end fan 42 can be kept running first, and the device can be switched to the normal fan mode to meet the cooling needs in different scenarios. The device can be turned off after use.

[0049] 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 handheld cooling fan, characterized in that: It includes a handle (1), a head shell (2), a circuit control module (3), a cold end module (4), and a hot end module (5); The circuit control module (3) is installed on the handle (1), and the lower end of the head shell (2) is integrally formed with a connecting block (6), which is movably connected to one side of the top of the handle (1). The cold end module (4) and the hot end module (5) are installed at both ends of the inner cavity of the head shell (2); A partition (7) is provided at the center of the inner cavity of the head shell (2), and a Peltier semiconductor (8) for use with the cold end module (4) and the hot end module (5) is installed at the center of the surface of the partition (7).

2. A handheld cooling fan according to claim 1, characterized in that: The Peltier semiconductor (8) is attached to the cold end module (4) and the hot end module (5) on both sides respectively, and the partition (7) divides the space of the head shell (2) into a cold air duct (9) and a hot air duct (10).

3. A handheld cooling fan according to claim 2, characterized in that: The cold end module (4) includes a cold end heat sink (41) and a cold end fan (42). The cold end heat sink (41) is attached to the cold end of the Peltier semiconductor (8). The cold end fan (42) is installed at the end of the cold end heat sink (41) away from the Peltier semiconductor (8). A cold air duct inlet (43) is provided on the surface of the head shell (2) near the cold end fan (42).

4. A handheld cooling fan according to claim 3, characterized in that: The hot end module (5) includes a hot end heat sink (51) and a hot end fan (52). The hot end heat sink (51) is attached to the hot end of the Peltier semiconductor (8). The hot end fan (52) is installed at the end of the hot end heat sink (51) away from the Peltier semiconductor (8). A hot air duct inlet (53) is provided on the surface of the head shell (2) near the hot end fan (52).

5. A handheld cooling fan according to claim 4, characterized in that: The cold air duct (9) is equipped with a cold end protective cover (11) at its air outlet, and the hot air duct (10) is equipped with a hot end protective cover (12) at its air outlet.

6. A handheld cooling fan according to claim 5, characterized in that: The cold end module (4) and the hot end module (5) are electrically connected to the circuit control module (3), the Peltier semiconductor (8) is electrically connected to the cold end module (4) and the hot end module (5), and the circuit control module (3) is electrically connected to the Peltier semiconductor (8).

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