Self-radiating axial flow fan device
By incorporating heat-conducting and heat-dissipating components into the axial flow fan, and utilizing the fan airflow and cold water nozzles to accelerate heat dissipation, the problem of insufficient motor heat dissipation is solved, achieving a highly efficient self-heating effect, extending motor life, and reducing the failure rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HANGHONG INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-24
AI Technical Summary
When the load increases, the motor of an axial flow fan generates more heat and its heat dissipation effect decreases, which can lead to motor damage. This heat dissipation problem is particularly prominent in scenarios with poor air circulation.
By incorporating heat-conducting and heat-dissipating components, the motor utilizes airflow for self-heating, increasing its heat dissipation area. Furthermore, heat dissipation is accelerated through fins and cold water nozzles, while high thermal conductivity materials and interference fits enhance thermal conductivity efficiency.
It effectively improves the heat dissipation of the motor, reduces motor heat generation, extends motor life, reduces failure rate, and has a simple structure, is easy to install, and has low cost.
Smart Images
Figure CN224161855U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fans, specifically relating to a self-heating axial flow fan device. Background Technology
[0002] Axial flow fans are fans in which airflow flows along the axial direction of the impeller. They have a wide range of applications, such as electric fans and air conditioner outdoor unit fans. Axial flow fans are usually used in situations where high flow rate and low pressure requirements are required. However, in some scenarios with relatively weak air circulation, even if a certain pressure exists, axial flow fans are still required due to structural limitations or flow rate requirements. When operating in such scenarios, the increased load on the axial flow fan leads to increased heat generation from its motor. Since the surrounding air circulation is weak, the motor's heat dissipation rate decreases, resulting in reduced heat dissipation efficiency. Long-term use can damage the motor. Utility Model Content
[0003] To address the aforementioned issues, this invention proposes a self-heating axial flow fan device. By incorporating a heat-conducting component, the heat from the motor is directed to a heat sink, which then rapidly dissipates heat under the action of the fan's airflow, thereby improving the internal heat dissipation effect of the motor.
[0004] The specific solution includes: a self-heating axial flow fan device, comprising an impeller, a motor, a fan shroud and a heat dissipation frame, wherein the impeller and the motor are connected, and the motor is fixed to the fan shroud via the heat dissipation frame;
[0005] The heat dissipation frame includes a heat-conducting component and a heat-dissipating component. The heat-conducting component is located on the motor, and the heat-dissipating component and the heat-conducting component are connected and extend away from the motor.
[0006] A heat dissipation frame is installed outside the motor to increase the heat dissipation area of the motor, thereby achieving self-heating by combining the airflow characteristics of the fan itself. Both the heat conduction component and the heat dissipation component are high thermal conductivity structures and are connected in one piece.
[0007] Furthermore, the heat-conducting component includes two symmetrically arranged heat-conducting clamps. The opposing surfaces of the heat-conducting clamps are provided with fixing grooves that conform to the shape of the motor. The heat-conducting clamps hold the motor between the two fixing grooves. The fixing grooves are attached to the surface of the motor, which increases the contact area, expands the heat conduction path, and improves the heat conduction efficiency.
[0008] Furthermore, the heat sink includes multiple fins arranged along the heat conductor. The fins are arranged parallel to the gas flow direction, and a heat sink cavity is formed between two connected fins. Multiple heat sink cavities are formed between multiple fins. Due to the small gap between the heat sink cavities, the airflow velocity through the heat sink cavity is fast, which leads to the removal of more heat and a decrease in temperature. The low temperature of the heat sink will produce a heat transfer effect with the high temperature of the heat conductor, so that the heat of the motor is continuously transferred out and dissipated.
[0009] Furthermore, the heat-conducting clamp and the motor are designed with an interference fit to increase the pressure between the heat-conducting component and the contact surface, making the two contact more closely, reducing thermal resistance, and thus increasing the heat conduction efficiency.
[0010] Furthermore, a thermally conductive silicone grease layer is applied to the surface where the fixing groove and the motor meet, which further reduces the thermal resistance between the motor and the guide fixture and increases the thermal conductivity.
[0011] Furthermore, the fins have multiple flow holes to increase the heat dissipation area and improve heat dissipation efficiency.
[0012] Furthermore, the fins are oriented with high thermal conductivity fibers that run from the direction of the heat-conducting component to the direction of the fins. The oriented arrangement of high thermal conductivity fibers can affect the direction of heat transfer, causing heat to be directionally transferred from the heat-conducting component to the heat-dissipating component. Compared with relying solely on heat transfer, this reduces the free dissipation of heat and improves the thermal conductivity efficiency.
[0013] Furthermore, the heat dissipation rack also includes cold water nozzles, which are positioned close to the heat dissipation components. The cold water nozzles are atomizing nozzles, preferably used to spray water to cool the components. The water falls into the heat dissipation components and evaporates quickly under the action of the nozzles, which can remove a large amount of heat.
[0014] Furthermore, the heat dissipation frame also includes a mounting base, the heat-conducting component is fixed to the mounting base, the mounting base is connected to the fan cover, and the heat-conducting component and the heat-conducting component are detachable; when cold water nozzles are installed, water evaporation on the fins is prone to scaling, so detachable installation is adopted to facilitate disassembly, cleaning and replacement.
[0015] Furthermore, a locking element is provided between the two heat-conducting clamps. The locking element includes two half-screws respectively located on the two heat-conducting clamps. The two half-screws are attached together and connected with a nut. An anti-loosening washer is provided below the nut to ensure that the connection does not loosen under vibration and to keep the heat-conducting clamp and the electrode in an interference fit at all times.
[0016] The beneficial effects of this application are as follows:
[0017] (1) The fan of this utility model still has a good heat dissipation effect in high pressure environment, which can effectively reduce motor heat generation, extend motor service life and reduce motor failure rate.
[0018] (2) The heat dissipation bracket of this utility model has a simple structure, is easy to install, can be disassembled at any time, is highly practical, and has a low cost. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the heat dissipation frame structure of this utility model;
[0022] Figure 3 This is a schematic diagram of a heat dissipation frame structure according to another embodiment of the present invention;
[0023] Figure 4 This is a schematic diagram of the assembly of a heat-conducting clamp according to another embodiment of the present invention;
[0024] In the attached diagram: 1-Impeller, 2-Motor, 21-Heat dissipation hole, 3-Fan shroud, 4-Heat dissipation frame, 41-Heat conduction component, 411-Heat conduction clamp, 412-Locking component, 413-Fixing groove, 414-Heat conduction protrusion, 42-Heat dissipation component, 421-Fins, 422-Heat dissipation cavity, 423-Flow hole, 43-Cold water nozzle, 44-Fixing base. Detailed Implementation
[0025] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.
[0026] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0027] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.
[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0029] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.
[0030] like Figure 1-2 As shown, a self-heating axial flow fan device includes an impeller 1, a motor 2, a fan shroud 3, and a heat dissipation frame 4. The impeller 1 and the motor 2 are connected, and the motor 2 is fixed to the fan shroud 3 through the heat dissipation frame 4.
[0031] The heat dissipation frame 4 includes a heat-conducting component 41 and a heat dissipation component 42. The heat-conducting component 41 is located on the motor 2, and the heat dissipation component 42 and the heat-conducting component 41 are connected and extend away from the motor 2.
[0032] A heat dissipation frame 4 is installed outside the motor 2 to increase the heat dissipation area of the motor 2, thereby achieving self-heating by combining the airflow characteristics of the fan itself. Both the heat conduction component 41 and the heat dissipation component 42 are high thermal conductivity structures and are connected in one piece.
[0033] In one specific embodiment, the heat-conducting component 41 includes two symmetrically arranged heat-conducting clamps 411. The opposite surfaces of the heat-conducting clamps 411 are provided with fixing grooves 413 that conform to the shape of the motor 2. The heat-conducting clamps 411 clamp the motor 2 between the two fixing grooves 413. The fixing grooves 413 are attached to the surface of the motor 2, which increases the contact area, expands the heat conduction path, and improves the heat conduction efficiency.
[0034] In a preferred embodiment, such as Figure 4 As shown, the outer casing of the motor 2 is provided with multiple heat dissipation holes 21. The heat conduction clamp 411 and the corresponding positions of the heat dissipation holes 21 are provided with multiple heat conduction protrusions 414 that cooperate with the heat dissipation holes 21. The heat conduction protrusions penetrate into the heat dissipation holes 21 to conduct heat from the inside of the motor 2. The length of the heat conduction protrusions 414 is not greater than the thickness of the outer casing of the motor 2, so as not to affect the normal operation of the motor 2.
[0035] In one specific embodiment, the heat sink 42 includes a plurality of fins 421 arranged along the heat conductor 41. The fins 421 are arranged parallel to the gas flow direction. A heat dissipation cavity 422 is formed between two connected fins 421. A plurality of heat dissipation cavities 422 are formed between the plurality of fins 421. Because the gap between the heat dissipation cavities 422 is small, the airflow velocity through the heat dissipation cavity 422 is fast, thereby carrying away more heat and lowering the temperature. The low temperature of the heat sink 42 will produce a heat transfer effect with the high temperature of the heat conductor 41, so that the heat of the motor 2 is continuously transferred out and dissipated.
[0036] In one specific embodiment, the heat-conducting clamp 411 and the motor 2 are configured with an interference fit to increase the pressure between the heat-conducting component 41 and the contact surface, making the two contact more closely, reducing thermal resistance, and thus increasing the heat conduction efficiency.
[0037] In one specific embodiment, the surface where the fixing groove 413 and the motor 2 meet is coated with a thermally conductive silicone grease layer, which further reduces the thermal resistance between the motor 2 and the guide fixture and increases the thermal conductivity.
[0038] In one specific embodiment, the fin 421 has multiple flow holes 423 to increase the heat dissipation area and improve heat dissipation efficiency.
[0039] In one specific embodiment, highly thermally conductive fibers are oriented in the fins 421 from the direction of the heat-conducting element 41 to the direction of the fins 421. The oriented arrangement of highly thermally conductive fibers can affect the direction of heat transfer, so that heat is oriented from the heat-conducting element 41 to the heat dissipation element 42. Compared with relying solely on heat transfer, this reduces the free dissipation of heat and improves the thermal conductivity.
[0040] In one specific embodiment, such as Figure 3 As shown, the heat dissipation frame 4 also includes a cold water nozzle 43, which is located close to the heat dissipation component 42. The cold water nozzle 43 is an atomizing nozzle, preferably used to spray water to cool it. The water falls into the heat dissipation component 42 and evaporates quickly under the action of the sharp nozzle, which can remove a large amount of heat.
[0041] In one specific embodiment, the heat dissipation frame 4 also includes a fixed base 44, the heat conduction element 41 is fixed to the fixed base 44, the fixed base 44 is connected to the fan cover 3, and the heat conduction element 41 and the heat conduction element 41 are detachable; when the cold water nozzle 43 is installed, the water on the fins 421 is prone to scale formation due to evaporation, and the detachable installation facilitates disassembly, cleaning and replacement.
[0042] In another specific embodiment, the heat conductor is provided with a water-cooled pipe, and the water-cooled pipe has a coiled heat-conducting element 41 inside it. One end of the water-cooled pipe is connected to a cold water inlet pipe, and the other end is connected to a cold water outlet pipe. The inner wall of the water-cooled pipe is spiral-shaped, and the water flows out spirally after entering the water-cooled pipe, thereby increasing the heat exchange efficiency between the cold water and the heat-conducting element 41.
[0043] In one specific embodiment, a locking member 412 is provided between the two heat-conducting clamps 411. The locking member 412 includes half-screws respectively provided on the two heat-conducting clamps 411. The two half-screws are attached to each other and connected with nuts. An anti-loosening washer is provided below the nut. The anti-loosening washer is provided to ensure that the connection does not loosen under vibration environment, so that the heat-conducting clamps 411 and the electrodes are always in an interference fit state.
[0044] For any parts not mentioned in this application, existing technologies may be used or referenced.
[0045] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.
[0046] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.
Claims
1. A self-heating axial flow fan device, characterized in that, It includes an impeller, a motor, a fan shroud, and a heat dissipation frame. The impeller is connected to the motor, and the motor is fixed to the fan shroud via the heat dissipation frame. The heat dissipation frame includes a heat-conducting component and a heat dissipation component. The heat-conducting component is located on the motor, and the heat dissipation component and the heat-conducting component are connected and extend away from the motor.
2. The self-heating axial flow fan device according to claim 1, characterized in that, The heat-conducting component includes two symmetrically arranged heat-conducting clamps. The opposite surfaces of the heat-conducting clamps are provided with fixing grooves that conform to the shape of the motor. The heat-conducting clamps hold the motor between the two fixing grooves.
3. The self-heating axial flow fan device according to claim 1, characterized in that, The heat dissipation component includes a plurality of fins arranged along the heat conduction component, the fins being arranged parallel to the gas flow direction, and a heat dissipation cavity being formed between two connected fins.
4. The self-heating axial flow fan device according to claim 2, characterized in that, The heat-conducting clamp and the motor are configured with an interference fit.
5. A self-heating axial flow fan device according to claim 2 or 4, characterized in that, The surface where the fixing groove connects to the motor is coated with a layer of thermally conductive silicone grease.
6. The self-heating axial flow fan device according to claim 3, characterized in that, The fins have multiple flow holes.
7. The self-heating axial flow fan device according to claim 3, characterized in that, The fins are oriented with highly thermally conductive fibers that extend from the direction of the thermally conductive element toward the direction of the fins.
8. The self-heating axial flow fan device according to claim 1, characterized in that, The heat dissipation frame also includes a cold water nozzle, which is located close to the heat dissipation component and is an atomizing nozzle.
9. A self-heating axial flow fan device according to claim 8, characterized in that, The heat dissipation frame also includes a fixing base, the heat-conducting component is fixed to the fixing base, the fixing base is connected to the fan cover, and the heat-conducting component and the heat-conducting component are detachable.
10. A self-heating axial flow fan device according to claim 4, characterized in that, A locking element is provided between the two heat-conducting clamps. The locking element includes a half-screw respectively provided on the two heat-conducting clamps. The two half-screws are attached to each other and connected with a nut. An anti-loosening washer is provided below the nut.