Fan with self-cooling structure
By using a double-layer structure and guide impeller design, the problem of low heat dissipation efficiency of traditional fans is solved, achieving efficient endogenous heat dissipation and improved aerodynamic efficiency.
Patent Information
- Application Number
- CN202520580683.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Traditional fans have low heat dissipation efficiency, and conventional single-layer shell structures are difficult to form directional air ducts, resulting in airflow not being able to effectively act on the heat source area, increasing the complexity and cost of the equipment.
It adopts a double-layer structure consisting of an outer shell and an inner shell. The outer wall of the inner shell is provided with through holes and guide impellers to divert airflow and precisely guide it to the winding area for heat dissipation. Combined with the quadrilateral through hole structure, it reduces turbulence loss and enhances the uniformity and efficiency of cooling airflow.
It achieves endogenous heat dissipation without the need for external cooling devices, significantly improving heat dissipation uniformity and efficiency, and simultaneously optimizing cooling performance and aerodynamic efficiency.
Smart Images
Figure CN223881383U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fan field especially, it is a fan with self cooling structure. BACKGROUND
[0002] The heat problem of the driver winding in the operation process of the traditional fan usually depends on external cooling devices, such as independent fan or liquid cooling system.
[0003] But the applicant in the process of realizing the technical scheme of the embodiment of the application, found that the above-mentioned technology at least has the following technical problems:
[0004] This heat dissipation mode not only increases the complexity and cost of equipment, but also may reduce the overall efficiency due to additional energy consumption. And the conventional single-shell structure is difficult to form a directional air duct, so that the airflow cannot effectively act on the heat source area, thereby the heat dissipation efficiency is not high. INVENTION CONTENTS
[0005] The utility model aims at providing a fan with self cooling structure to solve the problem of low heat dissipation efficiency of the fan in the prior art.
[0006] The technical scheme of the utility model is: a fan with self cooling structure, comprising a shell and an inner shell, a main air duct is formed between the shell and the inner shell, a moving impeller connected with a driver is arranged at the front end of the main air duct.
[0007] The inner shell is provided with a through hole, and the through hole is communicated with the main air duct and the heat source in the driver.
[0008] Preferably, the driver comprises a stator and a rotor connected with the moving impeller, the stator is provided with a winding and is configured as a heat source.
[0009] Preferably, the outer wall of the inner shell is coaxially and detachably connected with a first guide impeller, the first guide impeller is arranged between the through hole and the moving impeller, and is used for guiding part of the wind power generated by the moving impeller into the through hole.
[0010] Preferably, the cross section of the through hole perpendicular to the axis of the inner shell is configured as a quadrilateral structure, and the tangent line of a point on the blade surface of the first guide impeller is parallel to the line connecting the two most distant points in the quadrilateral structure.
[0011] Preferably, the outer wall of the inner shell is fixed with a second guide impeller, and part or all of the second guide impeller is arranged behind the through hole.
[0012] Preferably, the shell comprises a first shell with the inner wall matched with the moving impeller, and a second shell connected with the tail end of the first shell, and the end of the second guide impeller away from the inner shell is fixed with the second shell.
[0013] Preferably, the second guide vane wheel, the inner shell and the second outer shell are integrally formed.
[0014] Preferably, the through hole penetrates the inner shell along an axial direction.
[0015] Preferably, a cross section of the through hole perpendicular to an axial direction of the inner shell is configured as a circle.
[0016] Compared with the prior art, the fan with the self-cooling structure has the following advantages:
[0017] (1) The double-layer structure composed of the outer shell and the inner shell is adopted, so that the wind force generated by the moving vane wheel is divided into two parts: one part maintains the basic air outlet function of the fan along the main air duct, and the other part is precisely guided to the winding area of the driver through the through hole of the outer wall of the inner shell, and the winding is cooled, so that the endogenous cooling is realized without external cooling device.
[0018] (2) The first guide vane wheel is additionally arranged on the outer wall of the inner shell, and the quadrangular structure of the second through hole section is combined, so that the turbulent loss of the airflow entering the second through hole is effectively reduced, the cooling airflow more smoothly and centrally acts on the winding surface, and the uniformity and efficiency of the cooling are significantly improved.
[0019] (3) The second guide vane wheel is arranged in the same direction as the first guide vane wheel and is arranged behind the through hole, so that the second guide vane wheel can cooperate with the first guide vane wheel to comb the airflow direction in the main air duct, reduce the turbulence, and enhance the vacuum degree of the fan, so that the synchronous optimization of the cooling performance and the aerodynamic efficiency is considered. BRIEF DESCRIPTION OF DRAWINGS
[0020] The utility model will be further described in connection with the drawings and examples:
[0021] Figure 1 It is a sectional view of the fan with the self-cooling structure;
[0022] Figure 2 It is an explosion view of the fan with the self-cooling structure;
[0023] Figure 3 It is a through hole structure view in some embodiments of the utility model;
[0024] Figure 4 It is a through hole structure view in the preferred embodiment of the utility model;
[0025] Figure 5 It is a through hole sectional view in the preferred embodiment of the utility model;
[0026] Wherein: 1, shell, 11, outer shell, 111, first outer shell, 112, second outer shell, 12, inner shell, 2, impeller, 3, driver, 31, rotor, 32, stator, 4, via, 4a, first via, 4b, second via, 5, first guide vane, 6, second guide vane. DETAILED DESCRIPTION
[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0028] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.
[0029] The content of the present application will be further described in detail below in conjunction with specific embodiments:
[0030] As shown in Figure 1 and Figure 2 , a fan with a self-cooling structure, comprising a shell 1, the shell 1 is hollow inside, and one end is provided with an impeller 2, and the impeller 2 is driven to rotate by a driver 3 arranged inside the shell 1, thereby generating wind power.
[0031] Among them, the driver 3 includes a stator 32 and a rotor 31 connected to the impeller 2 through a main shaft, and the stator 32 is wound with a winding, and after the rotor 31 rotates for a long time, heat will be generated on the winding.
[0032] Therefore, the shell 1 is constructed as a double-layer structure composed of two parts, including an outer shell 11 and an inner shell 12, and the outer shell 11 and the inner shell 12 have a gap therebetween, thereby forming a main air duct, and the wind power generated by the impeller 2 circulates in the main air duct. And a through hole 4 is formed in the outer wall of the middle part of the inner shell 12, and the two ends of the through hole 4 respectively communicate with the main air duct and the winding of the driver 3. A part of the wind power generated by the impeller 2 can be blown onto the winding through the through hole 4, so that the fan can cool the internal heat source by the wind power generated by itself without relying on a separately arranged cooling device.
[0033] Specifically, as shown in Figure 3 , the through hole 4 is configured as a first through hole 4a, which is a circular through hole formed on the inner shell 12 parallel to the axis direction. Such a circular through hole has the advantage of being easy to process compared to other special-shaped holes. The outer wall of the inner shell 12 is coaxially sleeved with the first guide vane wheel 5, which is arranged between the through hole 4 and the moving vane wheel 2 and is relatively fixed between the first guide vane wheel 5 and the inner shell 12 and does not rotate with the moving vane wheel 2. The wind power generated by the moving vane wheel 2 is deflected by the first guide vane wheel 5, so that part of it can enter the through hole 4. In the preferred embodiment of the present application, as shown in Figure 4 , and the through hole 4 is configured as a second through hole 4b, the cross section of which perpendicular to the axis of the inner shell 12 is configured as a quadrilateral structure. In combination with Figure 5 , the connecting line between the two farthest points on the quadrilateral structure is parallel to the tangent direction of at least one point on the blade surface of the adjacent first guide vane wheel 5, so that the wind power deflected by the first guide vane wheel 5 can flow more smoothly into the inner shell 12 through the second through hole 4b, reducing the turbulent loss when passing through the second through hole 4b and thus improving the cooling efficiency.
[0034] Further, the outer wall of the inner shell 12 is fixed with the second guide vane wheel 6, the blade rotation direction of which is the same as that of the first guide vane wheel 5, and most of the second guide vane wheel 6 is located behind the through hole 4 (relative to the direction of the wind power generated by the moving vane wheel 2). The second guide vane wheel 6 cooperates with the first guide vane wheel 5 to enable the airflow in the main air duct to flow smoothly along the second guide vane wheel 6 in the same direction after flowing along the first guide vane wheel 5, thereby avoiding turbulence and making the airflow in the main air duct more orderly, thereby improving the vacuum degree of the fan and improving the efficiency of the fan.
[0035] Specifically, in order to facilitate manufacturing, in the present embodiment, as shown in Figure 2 , the outer shell 11 is formed by splicing two parts, including a first outer shell 111 and a second outer shell 112. Among them, the inner wall of the first outer shell 111 is in close contact with the outer edge of the moving vane wheel 2, and the tail end of the first outer shell 111 is connected with the second outer shell 112, and the end of the second guide vane wheel 6 away from the inner shell 12 is fixed with the second outer shell 112. Further, the second guide vane wheel 6, the inner shell 12 and the second outer shell 112 are all manufactured by an integral molding process.
[0036] When working:
[0037] The moving vane wheel 2 rotates under the drive of the driver 3 to generate wind power into the main air duct between the outer shell and the inner shell, and part of the wind power is deflected by the first guide vane wheel 5 and then enters the winding on the driver 3 through the through hole connecting the main air duct and the driver 3, thereby achieving the cooling function of the winding.
[0038] The remaining wind is formed into a stable spiral airflow by the cooperation of the first guide vane wheel 5 and the second guide vane wheel 6 and does work to the outside.
[0039] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.
Claims
1. A fan having a self-cooling structure, characterized by comprising: The fan comprises an outer shell (11) and an inner shell (12), a main air duct is formed between the outer shell (11) and the inner shell (12), and a front end of the main air duct is provided with a moving impeller (2) connected with a driver (3); The inner shell (12) is provided with a through hole (4) which is in communication with the main air duct and a heat source in the driver (3) respectively at two ends of the through hole (4).
2. The fan with a self-cooling structure according to claim 1, characterized in that, The driver (3) comprises a stator (32) and a rotor (31) connected with the moving impeller (2), and the stator (32) is provided with a winding and is configured as the heat source.
3. The fan with a self-cooling structure according to claim 2, characterized in that, A first guide impeller (5) is coaxially and detachably connected to an outer wall of the inner shell (12), the first guide impeller (5) is arranged between the through hole (4) and the moving impeller (2), and is used for guiding part of air generated by the moving impeller (2) into the through hole (4).
4. The fan with a self-cooling structure according to claim 3, characterized in that, A cross section of the through hole (4) perpendicular to an axis of the inner shell (12) is configured as a quadrilateral structure, and a tangent line of a point on a blade surface of the first guide impeller (5) is parallel to a line connecting two most distant points in the quadrilateral structure.
5. The fan with a self-cooling structure according to claim 4, characterized in that, A second guide impeller (6) is fixed to the outer wall of the inner shell (12), and part or all of the second guide impeller (6) is arranged behind the through hole (4).
6. The fan with a self-cooling structure according to claim 5, characterized in that, The outer shell (11) comprises a first outer shell (111) in which an inner wall is attached to the moving impeller (2), and a second outer shell (112) connected with a tail end of the first outer shell (111), and an end of the second guide impeller (6) away from the inner shell (12) is fixed to the second outer shell (112).
7. The fan with a self-cooling structure according to claim 6, characterized in that, The second guide impeller (6), the inner shell (12) and the second outer shell (112) are integrally formed.
8. The fan with a self-cooling structure according to claim 3, characterized in that, The through hole (4) penetrates the inner shell (12) along an axial direction.
9. The fan with a self-cooling structure according to claim 8, characterized in that, The cross section of the through hole (4) perpendicular to the axis of the inner shell (12) is configured as a circle.