A refrigeration fan

Abstract

The utility model discloses a refrigeration fan, including fan casing, the inside of fan casing is equipped with front air duct, rear air duct, battery, PCB board, motor, the rear air duct sets up the rear of front air duct, the top between of front air duct with the top of rear air duct is kept apart through the shunt piece, the middle part between of front air duct with the middle part of rear air duct is kept apart through semiconductor refrigeration piece, the back of semiconductor refrigeration piece is refrigeration surface and is equipped with the radiating tooth of inlaying to rear air duct inside, the front of semiconductor refrigeration piece is radiating surface and is equipped with the radiating tooth of inlaying to front air duct inside, the motor sets up between the bottom of front air duct with the bottom of rear air duct, the bottom, top, front upper end of fan casing is equipped with air inlet, cold air outlet, hot air outlet respectively. The utility model discloses refrigeration fan can hang on the neck, and the cold wind that refrigeration fan blows upwards can effectively solve the discomfort of the summer heat.

Description

Technical Field

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

[0002] Neck fans, as a new type of portable cooling fan, are widely welcomed by the market. They are not only small and lightweight, but also easy to wear, effectively solving the discomfort caused by the summer heat. However, existing neck fans themselves generate a certain amount of heat when operating, which can easily cause discomfort to users. Utility Model Content

[0003] The purpose of this invention is to provide a cooling fan to solve the technical problem that existing neck fans generate a certain amount of heat during operation, which can easily cause discomfort to users.

[0004] To achieve the above objectives, the present invention provides a cooling fan, including a fan housing. The fan housing contains a front air duct, a rear air duct, a battery, a PCB board, and a motor. The rear air duct is located behind the front air duct. The top ends of the front and rear air ducts are separated by a flow divider. The middle portions of the front and rear air ducts are separated by a thermoelectric cooler. The rear of the thermoelectric cooler has a cooling surface and heat dissipation fins extending into the rear air duct. The front of the thermoelectric cooler... The fan housing has a heat dissipation surface and heat dissipation teeth extending into the front air duct. The motor is located between the bottom end of the front air duct and the bottom end of the rear air duct. The bottom, top, and upper front ends of the fan housing are respectively provided with an air inlet, a cold air outlet, and a hot air outlet. The motor is provided with rotatable fan blades. The motor is connected to the air inlet for air intake. The top end of the rear air duct is connected to the cold air outlet for air exhaust. The upper front end of the front air duct is connected to the hot air outlet for air exhaust. The battery is electrically connected to the PCB board, the motor, and the semiconductor cooling chip.

[0005] Furthermore, the air inlet is provided with an air inlet mesh, the cold air outlet is provided with a cold air outlet mesh, and the hot air outlet is provided with a hot air outlet mesh.

[0006] Furthermore, the inner walls of the air inlet mesh, the cold air outlet mesh, and the hot air outlet mesh are respectively provided with supports.

[0007] Furthermore, the front air duct and the rear air duct are inclined to the left from top to bottom, and the air inlet is located at the lower left end of the fan housing.

[0008] Furthermore, the fan housing is pentagonal, the battery is located on the right side of the front air duct, the rear air duct, and the motor, the PCB board is located behind the rear air duct, the fan blades of the motor are located between the front air duct and the rear air duct, and the main body of the motor is located outside the front air duct and the rear air duct.

[0009] Furthermore, the fan housing includes a front housing and a rear housing, which are detachably installed together. The front air duct is disposed on the inner wall of the front housing, and the front air duct is detachably installed together with the rear air duct.

[0010] Furthermore, the PCB board includes a main PCB board and a motor drive board, the main PCB board being electrically connected to the motor drive board, and the motor drive board being electrically connected to the motor.

[0011] Furthermore, the main PCB board is provided with a switch push button, a gear button, and a transparent light ring. The switch push button extends outward through the side wall of the fan housing, and the gear button and the transparent light ring extend outward through the front wall of the fan housing. The gear button is located in the middle of the transparent light ring.

[0012] Furthermore, the main PCB board is also provided with a Type-C charging port, which extends outward through the side wall of the fan housing and can be used for charging and discharging.

[0013] Furthermore, the battery is a lithium battery, the motor is a brushless motor, the cooling surface and heat dissipation surface of the semiconductor refrigeration chip are coated with thermally conductive silicone grease, and the heat dissipation teeth are attached to the semiconductor refrigeration chip.

[0014] In summary, the technical solution of this utility model has the following beneficial effects: The structural design of this utility model is reasonable. By setting up a fan housing, the fan housing contains a front air duct, a rear air duct, a battery, a PCB board, and a motor. The rear air duct is located behind the front air duct. The top of the front air duct and the top of the rear air duct are separated by a diverter plate. The middle of the front air duct and the middle of the rear air duct are separated by a semiconductor cooling chip. The rear of the semiconductor cooling chip is a cooling surface with heat dissipation teeth extending into the rear air duct, and the front of the semiconductor cooling chip is a heat dissipation surface with heat dissipation teeth extending into the front air duct. The motor is located between the bottom of the front air duct and the bottom of the rear air duct. The bottom, top, and upper front of the fan housing are respectively provided with an air inlet, a cold air outlet, and a hot air outlet. The motor has rotatable fan blades. The motor is connected to the air inlet for air intake, the top of the rear air duct is connected to the cold air outlet for air outlet, and the upper front of the front air duct is connected to the hot air outlet for air outlet. The battery and... The PCB board, motor, and thermoelectric cooler are electrically connected. When the user hangs the cooling fan of this utility model around their neck using a neck strap, the motor drives the fan blades to rotate under the power of the battery and the control of the PCB board. Air from outside the fan housing enters the fan housing from the air inlet, forming an airflow. Guided by the fan blades, the airflow enters between the bottom of the front air duct and the bottom of the rear air duct. Since the middle and upper parts of the front and rear air ducts are separated by a thermoelectric cooler and a splitter plate, when the airflow encounters the thermoelectric cooler, the back of the cooler is a cooling surface, causing the airflow to pass through the heat dissipation teeth in the rear air duct, forming cold air. The cold air then blows upward through the cold air outlet onto the neck and other areas of the user. At the same time, since the front of the thermoelectric cooler is a heat dissipation surface, the airflow passes through the heat dissipation teeth in the front air duct, forming hot air. The hot air then blows upward through the hot air outlet onto the front of the user and other areas of the user. As can be seen from the above analysis, the cooling fan of this utility model can be hung around the neck. The cool air blown upward by the cooling fan can effectively solve the discomfort caused by the summer heat. At the same time, the hot air generated by the cooling fan itself is blown forward to the front of the human body and other positions, avoiding the hot air causing discomfort to the user. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the front shell of this utility model; Figure 3 This is a three-dimensional structural diagram of the present invention when the front shell is removed; Figure 4 This is a three-dimensional structural diagram of the rear shell of this utility model; Figure 5 This is a three-dimensional structural diagram of the present invention with the fan housing removed; Figure 6This is a three-dimensional structural diagram of the present invention when the back cover is removed; Explanation of reference numerals in the attached drawings: Fan housing (1), rear air duct (2), battery (3), PCB board (4), motor (5), splitter plate (6), semiconductor cooling chip (7), heat dissipation fins (8), air inlet mesh (9), cold air outlet mesh (10), hot air outlet mesh (11), Type-C charging port (12); front air duct (101), air inlet (102), cold air outlet (103), hot air outlet (104), front shell (105), rear shell (106); main PCB board (401), motor drive board (402), switch push button (403), gear button (404), transparent light ring (405). Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, but this does not constitute a limitation on the scope of protection of the present utility model.

[0017] In this utility model, for clearer description, the following explanation is provided: The observer faces the attached... Figure 1 When observing, the observer's left side is designated as right, the observer's right side as left, the observer's front as rear, the observer's rear as front, the observer's top as up, and the observer's bottom as down. It should be noted that the terms "front end," "rear end," "left side," "right side," "middle," "above," and "below" used in this document indicate orientations or positional relationships based on the accompanying drawings. These are merely for the purpose of clearly describing the present invention and do not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used only for the purpose of clarity or simplification of description and should not be construed as indicating or implying relative importance or quantity.

[0018] See Figures 1 to 6This embodiment provides a cooling fan, including a fan housing 1. Inside the fan housing 1 are a front air duct 101, a rear air duct 2, a battery 3, a PCB board 4, and a motor 5. The rear air duct 2 is located behind the front air duct 101. The top of the front air duct 101 and the top of the rear air duct 2 are separated by a splitter plate 6. The middle of the front air duct 101 and the middle of the rear air duct 2 are separated by a thermoelectric cooler 7. The rear of the thermoelectric cooler 7 is a cooling surface and has heat dissipation teeth 8 extending into the rear air duct 2. The front of the thermoelectric cooler 7 is a heat dissipation surface and has... There are heat dissipation teeth 8 extending into the front air duct 101. The motor 5 is located between the bottom end of the front air duct 101 and the bottom end of the rear air duct 2. The bottom end, top end, and upper front end of the fan housing 1 are respectively provided with an air inlet 102, a cold air outlet 103, and a hot air outlet 104. The motor 5 is provided with rotatable fan blades. The motor 5 is connected to the air inlet 102 for air intake. The top end of the rear air duct 2 is connected to the cold air outlet 103 for air exhaust. The upper front end of the front air duct 101 is connected to the hot air outlet 104 for air exhaust. The battery 3 is electrically connected to the PCB board 4, the motor 5, and the semiconductor cooling chip 7. Function: When the user hangs this cooling fan around their neck using the neck strap, the motor drives the fan blades to rotate under the power of the battery and the control of the PCB board. Air from outside the fan housing enters the fan housing from the air inlet, forming an airflow. Guided by the fan blades, the airflow enters between the bottom of the front air duct and the bottom of the rear air duct. Since the middle and upper parts of the front and rear air ducts are separated by a semiconductor cooling chip and a diverter, when the airflow encounters the semiconductor cooling chip, the back of the cooling chip is the cooling surface, causing the airflow to pass through the heat dissipation teeth in the rear air duct, forming cold air. The cold air then blows upward through the cold air outlet onto the neck and other areas of the user. At the same time, since the front of the semiconductor cooling chip is the heat dissipation surface, the airflow passes through the heat dissipation teeth in the front air duct, forming hot air. The hot air then blows upward through the hot air outlet onto the front of the user and other areas of the user. As can be seen from the above analysis, the cooling fan of this utility model can be hung around the neck. The cool air blown upward by the cooling fan can effectively solve the discomfort caused by the summer heat. At the same time, the hot air generated by the cooling fan itself is blown forward to the front of the human body and other positions, avoiding the hot air causing discomfort to the user.

[0019] Specifically, an air inlet mesh 9 is provided on the air inlet 102, a cold air outlet mesh 10 is provided on the cold air outlet 103, and a hot air outlet mesh 11 is provided on the hot air outlet 104. Function: The air inlet mesh can block external debris from entering through the air inlet 102 during air intake; the cold air outlet mesh can block external debris from entering through the cold air outlet 103 during upward cold air output; and the hot air outlet mesh can block external debris from entering through the hot air outlet 104 during upward hot air output, thus protecting the internal structure of the cooling fan.

[0020] Specifically, the inner walls of the air inlet mesh 9, the cold air outlet mesh 10, and the hot air outlet mesh 11 are each equipped with a bracket. Function: The brackets support the air inlet mesh, the cold air outlet mesh, and the hot air outlet mesh.

[0021] Specifically, the front air duct 101 and the rear air duct 2 gradually slope to the left from top to bottom, and the air inlet 102 is located at the lower left end of the fan housing 1. Function: The cooperation of the front air duct 101 and the rear air duct 2 can realize the guidance of hot air and cold air, while the flow divider splits the airflow passing through the semiconductor cooling chip, directing it to the hot air outlet and the cold air outlet respectively.

[0022] Specifically, the fan housing 1 is pentagonal in shape. The battery 3 is located on the right side outside the front air duct 101, rear air duct 2, and motor 5. The PCB board 4 is located behind the rear air duct 2. The fan blades of the motor 5 are located between the front air duct 101 and the rear air duct 2, and the main body of the motor 5 is located outside the front air duct 101 and the rear air duct 2. Function: This arrangement allows for a more compact distribution structure among the battery 3, motor 5, and PCB board 4.

[0023] Specifically, the fan housing 1 includes a front housing 105 and a rear housing 106, which are detachably installed together. A front air duct 101 is located on the inner wall of the front housing 105, and the front air duct 101 and the rear air duct 2 are detachably installed together. Function: Detachable installation facilitates the installation and arrangement of internal parts of the cooling fan.

[0024] Specifically, PCB board 4 includes a main PCB board 401 and a motor drive board 402. The main PCB board 401 is electrically connected to the motor drive board 402, and the motor drive board 402 is electrically connected to the motor 5. Functions: The main PCB board 401 is responsible for implementing the main control functions, while the motor drive board 402 is responsible for driving the motor.

[0025] Specifically, the main PCB board 401 is equipped with a switch push button 403, a speed control button 404, and a transparent LED ring 405. The switch push button 403 extends outward through the side wall of the fan housing 1, while the speed control button 404 and the transparent LED ring 405 extend outward through the front wall of the fan housing 1. The speed control button 404 is located in the middle of the transparent LED ring 405. Function: The switch push button 403 can be pushed to adjust the mode: normal temperature air, cold air, and power off. In normal temperature air mode, the semiconductor cooling chip 7 does not need to cool; in cold air mode, cooling continues. The speed control button 404 is a 6-speed button: 0 (standby), 1-5 speed adjustment. Each click illuminates the corresponding color LED in the transparent LED ring 405, flashing for 1 second, cycling sequentially. After the speed is selected, the LED does not illuminate while the cooling fan is running. For example, the transparent light ring uses dual-color lights: blue for cool air and white for normal temperature air. The white light flashes rapidly and continuously with a 0.5-second interval, indicating that the battery is too low. The white light flashes 3 times, with a 1-second interval, stops for 3 seconds, and then cycles again, indicating that the battery is insufficient and cannot work. The white light flashes slowly and continuously with a 2-second interval, indicating that it is charging. The white light is always on, indicating that it is fully charged.

[0026] Specifically, the main PCB board 401 is also equipped with a Type-C charging port 12, which extends outward through the side wall of the fan housing 1. The Type-C charging port 12 can charge and discharge. Function: The cooling fan can generate cool air, and since charging and discharging are done through the same interface of the Type-C charging port, the Type-C charging port 12 can discharge to charge mobile phones, thus the cooling fan can also act as a power bank.

[0027] Specifically, battery 3 is a lithium battery, motor 5 is a brushless motor, and the cooling and heat dissipation surfaces of the thermoelectric cooler 7 are coated with thermally conductive silicone grease. Heat dissipation fins 8 are attached to the thermoelectric cooler 7. Function: The cooler has both hot and cold sides. Thermally conductive silicone grease is applied to both sides of the cooler, and heat dissipation fins are attached to the thermoelectric cooler. After the thermoelectric cooler operates, the cold side continuously absorbs heat, achieving a cooling effect, and blows out cold air, transferring heat to the hot side. Under the airflow of the cooling fan, the hot side dissipates heat through the heat dissipation fins, thus creating a cycle. Preferably, a lithium battery is used for power supply, and motor 5 is a high-speed brushless motor at 35,000 RPM, with suction power.

[0028] In summary, the cooling fan of this utility model is actually a small cooling fan that can be hung around the neck with a lanyard, making it easy to carry. When the semiconductor cooling chip is used for cooling, the temperature of the cold air outlet can be about 5°C lower than the temperature of the air inlet, thus bringing better comfort to the user.

[0029] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A cooling fan, comprising a fan housing (1), characterized in that: The fan housing (1) contains a front air duct (101), a rear air duct (2), a battery (3), a PCB board (4), and a motor (5). The rear air duct (2) is located behind the front air duct (101). The top of the front air duct (101) and the top of the rear air duct (2) are separated by a splitter plate (6). The middle of the front air duct (101) and the middle of the rear air duct (2) are separated by a thermoelectric cooler (7). The rear of the thermoelectric cooler (7) is a cooling surface and has heat dissipation teeth (8) extending into the rear air duct (2). The front of the thermoelectric cooler (7) is a heat dissipation surface and has heat dissipation teeth (8) extending into the front air duct (101). The motor (5) is located between the bottom end of the front air duct (101) and the bottom end of the rear air duct (2); the bottom end, top end and front upper end of the fan housing (1) are respectively provided with an air inlet (102), a cold air outlet (103) and a hot air outlet (104), the motor (5) is provided with rotatable fan blades, the motor (5) is in conjunction with the air inlet (102) for air intake, the top end of the rear air duct (2) is in conjunction with the cold air outlet (103) for air outlet, the front upper end of the front air duct (101) is in conjunction with the hot air outlet (104) for air outlet, and the battery (3) is electrically connected to the PCB board (4), the motor (5) and the semiconductor cooling chip (7).

2. A cooling fan according to claim 1, characterized in that: The air inlet (102) is provided with an air inlet mesh (9), the cold air outlet (103) is provided with a cold air outlet mesh (10), and the hot air outlet (104) is provided with a hot air outlet mesh (11).

3. A cooling fan according to claim 2, characterized in that: The inner walls of the air inlet mesh (9), the cold air outlet mesh (10), and the hot air outlet mesh (11) are respectively provided with supports.

4. A cooling fan according to claim 1, characterized in that: The front air duct (101) and the rear air duct (2) are inclined to the left from top to bottom, and the air inlet (102) is located at the lower left end of the fan housing (1).

5. A cooling fan according to claim 4, characterized in that: The fan housing (1) is pentagonal in shape. The battery (3) is located on the right side outside the front air duct (101), the rear air duct (2), and the motor (5). The PCB board (4) is located behind the rear air duct (2). The fan blade part of the motor (5) is located between the front air duct (101) and the rear air duct (2). The main body part of the motor (5) is located outside the front air duct (101) and the rear air duct (2).

6. A cooling fan according to claim 1, characterized in that: The fan housing (1) includes a front housing (105) and a rear housing (106), the front housing (105) and the rear housing (106) are detachably installed together, the front air duct (101) is disposed on the inner wall of the front housing (105), and the front air duct (101) and the rear air duct (2) are detachably installed together.

7. A cooling fan according to claim 1, characterized in that: The PCB board (4) includes a main PCB board (401) and a motor drive board (402). The main PCB board (401) is electrically connected to the motor drive board (402), and the motor drive board (402) is electrically connected to the motor (5).

8. A cooling fan according to claim 7, characterized in that: The main PCB board (401) is provided with a switch push button (403), a gear button (404), and a transparent light ring (405). The switch push button (403) extends outward through the side wall of the fan housing (1), and the gear button (404) and the transparent light ring (405) extend outward to the front wall of the fan housing (1). The gear button (404) is located in the middle of the transparent light ring (405).

9. A cooling fan according to claim 7, characterized in that: The main PCB board (401) is also provided with a Type-C charging port (12), which extends outward through the side wall of the fan housing (1) and can be charged and discharged.

10. A cooling fan according to any one of claims 1 to 9, characterized in that: The battery (3) is a lithium battery, the motor (5) is a brushless motor, the cooling surface and heat dissipation surface of the semiconductor refrigeration chip (7) are coated with thermally conductive silicone grease, and the heat dissipation teeth (8) are attached to the semiconductor refrigeration chip (7).

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