Efficient and energy-saving cooling fan

Abstract

The invention relates to a cooling fan, and discloses an efficient and energy-saving cooling fan which comprises a fan body capable of being fixedly connected to the top face of a cooling module and further comprises a flow guide part fixedly connected to the fan body, and a flow guide channel is formed in the flow guide part. An air inlet and an air outlet which are communicated with the flow guide channel are formed in the upper end and the lower end of the flow guide part respectively, the flow guide part is further provided with an inclined first flow guide plate at the air outlet, and the first flow guide plate is located on the lower portion of the air outlet side of the heat dissipation module, so that airflow transversely blown out of the air outlet side of the heat dissipation module is obliquely downward; and an inclined second flow guide plate is also arranged in the flow guide channel, so that airflow flowing through the flow guide channel is blown to the upper part of the air outlet side of the heat dissipation module. According to the invention, hot air flow is reused, new cold air flow is generated to dissipate heat, the used air flow is reused, the same heat dissipation effect can be realized with lower energy consumption, the energy utilization rate is high, and more energy is saved.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation fans, and in particular to a high-efficiency and energy-saving heat dissipation fan. Background Art

[0002] Cooling fans are widely used in household appliances and electronic devices. Rotating fan blades drive airflow to dissipate heat from internal heat sources, preventing them from overheating and causing damage. To further improve the cooling efficiency and performance of cooling fans, numerous improvements to traditional cooling fans have emerged in the prior art. For example, Chinese patent document CN222263430U, entitled "A Cooling Fan," discloses an exhaust duct between the frame support and the side of the frame. When the fan blades rotate and drive airflow toward the heat dissipation module, some of the airflow is diverted from the exhaust duct to the periphery of the heat dissipation module, thereby reducing turbulence and driving airflow around the heat dissipation module, thereby improving heat dissipation performance. In this solution, the portion of airflow diverted from the exhaust duct is airflow from the fan blades and has not yet flowed to the heat dissipation module. While this airflow can drive airflow around the heat dissipation module, it also directly reduces the airflow from the fan blades toward the heat dissipation module, resulting in limited improvement in overall heat dissipation performance. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a heat dissipation fan which can divert air from the airflow that has passed through the heat dissipation module and has a higher heat dissipation efficiency.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A high-efficiency and energy-saving cooling fan includes a fan body that can be fixedly connected to the top surface of the heat dissipation module, and also includes a guide member fixedly connected to the fan body, a guide channel is provided inside the guide member, and the upper and lower ends of the guide member are respectively provided with an air inlet and an air outlet connected to the guide channel, the guide member is also provided with an inclined first guide plate at the air outlet, and the first guide plate is located at the lower part of the air outlet side of the heat dissipation module, so that the airflow blown laterally from the air outlet side of the heat dissipation module is changed to be inclined downward, and the guide channel is also provided with an inclined second guide plate, so that the airflow flowing through the guide channel is blown toward the upper part of the air outlet side of the heat dissipation module.

[0006] According to a further improved technical solution, the guide member is provided with a cover plate inclined toward the fan body at the air inlet, and the air inlet includes a plurality of air inlet holes, which are evenly arranged on the cover plate.

[0007] According to a further improved technical solution, the cover plate is provided with guide grooves facing the fan body at positions between adjacent air inlet holes.

[0008] According to a further improved technical solution, the air guide member is provided with baffles extending toward the fan body on both sides of the cover plate.

[0009] A further improved technical solution is that the guide channel of the guide member is surrounded by an inner plate, an outer plate and two side panels, the inner plate is close to the fan body, the outer plate is away from the fan body and there is a distance between it and the inner plate, the two side panels are fixedly connected to both sides of the inner plate and the outer plate respectively, and the bottom surface of the inner plate is flush with the bottom surface of the fan body.

[0010] According to a further improved technical solution, the second guide plate is arranged laterally on the inner side surface of the outer plate.

[0011] According to a further improved technical solution, both sides of the top surface of the fan body are provided with through holes for screws to pass through and be threadedly connected to the heat dissipation module, and the guide member is provided with a strip hole corresponding to one of the through holes on one side.

[0012] In summary, the present invention has the following beneficial effects: the present invention fixes the fan body to the heat dissipation module, and the first guide plate of the guide member is located on the air outlet side of the heat dissipation module. When the fan body is working, it generates airflow that blows toward the heat dissipation module, takes away the heat of the heat dissipation module and blows it out laterally from the air outlet side. The direction of the hot airflow is changed to obliquely downward by the guidance of the first guide plate. Since the hot airflow flows away quickly from the area close to the air outlet, low pressure is generated, thereby driving the upper cold airflow from the air inlet into the guide channel, and after passing through the second guide plate, it blows toward the upper end of the air outlet side of the heat dissipation module, further dissipating the heat from the heat dissipation module and improving the heat dissipation efficiency. At the same time, since the cold airflow is generated by the airflow that has already flowed through the heat dissipation module, it is a reuse of the airflow that has already been used, thereby improving the energy utilization rate and achieving better energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0014] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;.

[0015] In the attached figure:

[0016] The fan body 1 ; the housing 11 ; the air guide 111 ; the fan assembly 12 ; the air guide 2 ; the first air guide plate 21 ; the second air guide plate 22 ; the cover plate 23 ; the air inlet 24 ; the air guide groove 25 ; the side plate 26 ; the outer plate 27 ; the side plate 28 ; the strip hole 29 ; the heat dissipation module 3 ; and the heat dissipation fins 31 . DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] It should be noted that when a component is referred to as being “fixed to” or “disposed on” another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being “connected to” another component, it can be directly or indirectly connected to the other component.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0021] Reference Figure 1 and Figure 2 A high-efficiency, energy-saving cooling fan includes a fan body 1 and a flow guide 2. The fan body 1 is detachably fixedly connected to the top surface of a heat dissipation module 3. Some existing electrical or electronic devices have heat dissipation modules 3 installed on their heat sources. The fan body 1 is fixedly connected to these heat dissipation modules 3. This type of heat dissipation module 3 generally includes a base and multiple side-by-side heat dissipation fins 31 disposed on the base. When air flows toward the top of the heat dissipation module 3, it enters the interior through the gaps between the heat dissipation fins 31 on both sides and flows out laterally from positions near the bottom on both sides. These two sides are the air outlet sides.

[0022] The guide member 2 of the above embodiment is detachably fixedly connected to the fan body 1, and a guide channel is provided inside the guide member 2. The upper and lower ends of the guide member 2 are respectively provided with an air inlet and an air outlet connected to the guide channel. The guide member 2 is also provided with an inclined first guide plate 21 at the air outlet, and the first guide plate 21 is located on the air outlet side of the heat dissipation module 3, so that the airflow blown out laterally from the air outlet side of the heat dissipation module 3 is changed to be obliquely downward. The guide channel is also provided with an inclined second guide plate 22, so that the airflow flowing through the guide channel is blown toward the upper end of the air outlet side of the heat dissipation module 3.

[0023] When the fan body 1 of the above embodiment is working, it generates an airflow that blows toward the heat dissipation module 3, taking away the heat of the heat dissipation module 3 and blowing it out laterally from the air outlet side. This is the main heat dissipation. After the hot air flow is guided by the first guide plate 21, its direction changes to obliquely downward. The fast-flowing hot air flow generates a low pressure that drives the upper cold air flow into the guide channel from the air inlet. After passing through the second guide plate 22, it blows toward the upper end of the air outlet side of the heat dissipation module 3. This is auxiliary heat dissipation. The overall heat dissipation effect of the heat dissipation fan is improved. Due to the reuse of the hot air flow, a new cold air flow is generated to dissipate heat, which is a reuse of the already used air flow. It can achieve the same heat dissipation effect with lower energy consumption, high energy utilization rate, and more energy-saving.

[0024] In one embodiment, referring to Figure 1 and Figure 2 The guide member 2 is provided with a cover plate 23 at the air inlet, which is inclined toward the fan body 1. The air inlet includes a plurality of air inlet holes 24, which are evenly arranged on the cover plate 23. In addition, the cover plate 23 is provided with guide grooves 25 facing the fan body 1 at positions between adjacent air inlet holes 24. In this way, part of the airflow flowing toward the air inlet enters the guide channel through the air inlet holes 24, and the rest flows toward the fan body 1, thereby increasing the air volume of the fan body 1. The guide grooves 25 provided thereon can relatively better concentrate the airflow and make it flow toward the fan body 1. Baffles 281 extending toward the fan body 1 are provided on the guide member 2 on both sides of the cover plate 23, allowing the airflow to be better concentrated on the cover plate 23 for utilization.

[0025] In one embodiment, referring to Figure 1 and Figure 2The guide channel of the guide member 2 is surrounded by an inner plate 26, an outer plate 27, and two side panels 28. The inner plate 26 is close to the fan body 1, and the outer plate 27 is away from the fan body 1 and has a gap between it and the inner plate 26. The two side panels 28 are fixedly connected to both sides of the inner plate 26 and the outer plate 27, respectively. The bottom surface of the inner plate 26 is flush with the bottom surface of the fan body 1. The fan body 1 adopts the existing technology, including a housing 11 with an air guide tube 111 and a fan assembly 12 located in the air guide tube 111. The portion between the upper and lower plates of the housing 11 outside the air guide tube 111 is a hollow structure. Therefore, the bottom surface of the inner plate 26 is set to be flush with the bottom surface of the fan body 1 to prevent air from flowing away between the upper and lower plates and reducing the heat dissipation efficiency.

[0026] In the above embodiment, the second deflector 22 is arranged horizontally on the inner side of the outer plate 27. A gap is left between the end of the second deflector 22 and the inner plate 26 to facilitate airflow. The connection between the second deflector 22 and the outer plate 27 is higher, so the airflow is blown diagonally downward toward the upper portion of the heat dissipation module 3. Because the fan body 1 blows directly toward the top of the heat dissipation module 3, the airflow flows toward the lower portion of the rapid heat dissipation module 3. As a result, no airflow flows out from the upper portion of the air outlet side, and the airflow essentially flows out from the lower portion of the air outlet side. Due to the influence of the high-speed airflow in the upper portion of the heat dissipation module 3, a low pressure is generated that attracts the airflow in the guide channel to the upper portion of the air outlet side. Combined with the action of the second deflector 22, the airflow in the guide channel is essentially directed to the upper portion of the air outlet side. Preferably, the end of the second deflector 22 is positioned close to the air outlet side of the heat dissipation module 3, which can better direct the airflow toward the heat dissipation module 3 and better utilize the low pressure of the airflow above the heat dissipation module 3 to increase the airflow into the channel.

[0027] In one embodiment, both sides of the top surface of the fan body 1 are provided with through holes for screws to pass through and threadedly connect to the heat dissipation module 3. The air guide 2 is provided with a strip hole 29 corresponding to one of the through holes. These strip holes 29 facilitate the installation of the air guide 2. If the heat dissipation module 3 is larger than the fan body 1, the air guide 2 can be moved outward, and then screws can be passed through the strip holes 29 and the through holes to thread and lock the air guide 2 with the heat dissipation module 3.

[0028] The above embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A high-efficiency and energy-saving cooling fan, comprising a fan body fixedly connected to the top surface of a cooling module, characterized in that: It also includes a guide member fixedly connected to the fan body, a guide channel is provided inside the guide member, and the upper and lower ends of the guide member are respectively provided with an air inlet and an air outlet connected to the guide channel. The guide member is also provided with an inclined first guide plate at the air outlet, and the first guide plate is located at the lower part of the air outlet side of the heat dissipation module, so that the airflow blown out laterally from the air outlet side of the heat dissipation module is changed to be inclined downward, and the guide channel is also provided with an inclined second guide plate, so that the airflow flowing through the guide channel is blown toward the upper part of the air outlet side of the heat dissipation module.

2. The high-efficiency and energy-saving cooling fan according to claim 1, characterized in that: The guide member is provided with a cover plate inclined toward the fan body at the air inlet. The air inlet includes a plurality of air inlet holes, and the air inlet holes are evenly arranged on the cover plate.

3. The high-efficiency and energy-saving cooling fan according to claim 2, characterized in that: The cover plate is provided with guide grooves facing the fan body at positions between adjacent air inlet holes.

4. The high-efficiency and energy-saving cooling fan according to claim 2, characterized in that: The air guide member is provided with baffles extending toward the fan body on both sides of the cover plate.

5. The high-efficiency and energy-saving cooling fan according to claim 1, characterized in that: The guide channel of the guide member is surrounded by an inner plate, an outer plate and two side panels. The inner plate is close to the fan body, the outer plate is away from the fan body and there is a distance between it and the inner plate. The two side panels are fixedly connected to both sides of the inner plate and the outer plate respectively, and the bottom surface of the inner plate is flush with the bottom surface of the fan body.

6. The high-efficiency and energy-saving cooling fan according to claim 5, characterized in that: The second guide plate is arranged laterally on the inner side surface of the outer plate.

7. The high-efficiency and energy-saving cooling fan according to any one of claims 1 to 6, characterized in that: Both sides of the top surface of the fan body are provided with through holes for screws to pass through and be threadedly connected to the heat dissipation module, and the guide piece is provided with a strip hole corresponding to the through hole on one side.

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