Rectification fan and fairing

Abstract

The rectifying fan comprises a fan body and the rectifying cover, the fan body is provided with an air inlet, the rectifying cover comprises a main body and a fan frame, the main body is provided with an air inlet channel used for rectifying and feeding air into the fan body, and the fan frame is arranged between the main body and the fan body. The fan frame is provided with a first ventilation hole, the first ventilation hole is communicated with the air inlet channel and the air inlet, the connection position of the air inlet channel and the first ventilation hole has the same section shape and section size, and the air inlet channel and the first ventilation hole are arranged oppositely, that is, the connection position of the air inlet channel and the first ventilation hole is parallel and aligned in space. According to the rectifying fan disclosed by the invention, the connecting positions of the air inlet duct on the main body of the rectifying cover and the first ventilation holes in the fan frame are arranged to be the section structures which are the same in shape and size and are arranged oppositely, so that smooth and smooth flowing of airflow at the connecting positions of the main body and the fan frame is ensured, and the noise reduction effect of the rectifying cover is improved; and noise generated during operation of the fan is reduced.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology, and more specifically, to a rectifier fan and a rectifier cover. Background Technology

[0002] With the rapid development of the new energy industry, the operating power of electrical equipment is increasing, leading to a greater demand for heat dissipation. Fans, as commonly used air-cooled heat dissipation devices, are widely used in various heat dissipation applications, and when facing high heat dissipation demands, more fans are often required. However, fans generate noise during operation, and although related technologies employ shrouds to reduce noise, their noise reduction effect is not ideal.

[0003] Therefore, how to reduce the noise during the operation of the fan has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a rectifier fan to reduce the noise during operation.

[0005] Another objective of this application is to provide a shroud for the aforementioned rectifier fan.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A rectifier fan, comprising:

[0008] The fan has an air inlet;

[0009] The fairing includes a main body and a fan frame. The main body is provided with an air inlet duct. The fan frame is disposed between the main body and the fan and has a first ventilation hole. The first ventilation hole is connected to both the air inlet duct and the air inlet. The connection position of the air inlet duct and the first ventilation hole has the same cross-sectional shape and cross-sectional size and is arranged facing each other.

[0010] Optionally, in the above-described rectifier fan, the connection position of the air inlet and the first ventilation hole has the same cross-sectional shape and cross-sectional size, and they are arranged facing each other.

[0011] Optionally, the above-mentioned rectifier fan also includes a mounting plate, wherein the fan and the fan frame are respectively disposed on both sides of the mounting plate, and a second ventilation hole is provided on the mounting plate to connect the air inlet and the first ventilation hole.

[0012] Optionally, in the above-mentioned rectifier fan, the connection positions of the first ventilation hole and the second ventilation hole have the same cross-sectional shape and cross-sectional dimensions, and are arranged facing each other;

[0013] And / or, the connection points of the second ventilation hole and the air inlet have the same cross-sectional shape and cross-sectional dimensions, and are arranged facing each other.

[0014] Optionally, in the above-mentioned rectifier fan, one or more second ventilation holes are provided on one of the mounting plates, and the second ventilation holes are connected to the air inlet and the first ventilation hole in a one-to-one correspondence.

[0015] Optionally, in the above-mentioned rectifier fan, the main body and the fan frame are either an integral structure or a separate structure.

[0016] Optionally, in the above-mentioned rectifier fan, the main body includes a guide section and a rectifier section. The rectifier section is disposed between the guide section and the fan frame, and the inner hole of the guide section, the inner hole of the rectifier section and the first ventilation hole are connected in sequence. The inner hole of the guide section and the inner hole of the rectifier section are jointly constructed as the air inlet duct.

[0017] Along the direction from the guide section to the rectifying section, the inner hole of the guide section gradually shrinks until it has the same cross-sectional shape and cross-sectional size as the inner hole of the rectifying section. The inner hole of the rectifying section and the connection position of the first ventilation hole have the same cross-sectional shape and cross-sectional size and are arranged opposite each other.

[0018] Optionally, in the above-mentioned rectifier fan, along the direction from the guide section to the rectifier section, the cross-sectional shape and cross-sectional dimensions of the inner hole at each position of the rectifier section are the same;

[0019] The cross-sectional shape of the end of the inner hole of the guide section away from the rectifying section may be the same as or different from the cross-sectional shape of the inner hole of the rectifying section.

[0020] Optionally, the above-mentioned rectifier fan also includes an air inlet grille, which is disposed within the air inlet duct.

[0021] A fairing, which is the fairing used in the aforementioned rectifier fan.

[0022] The rectifier fan provided in this application includes a fan and a rectifier cover. The fan has an air inlet, and the rectifier cover includes a main body and a fan frame. The main body is provided with an air inlet duct for rectifying and directing airflow to the fan. The fan frame is disposed between the main body and the fan for fixing to the fan or other mounting structures, and allows the entire rectifier cover to be positioned at the fan's air inlet. The fan frame has a first ventilation hole, which communicates with both the air inlet duct and the air inlet. The connection positions of the air inlet duct and the first ventilation hole have the same cross-sectional shape and dimensions, and are arranged facing each other, that is, the connection positions of the air inlet duct and the first ventilation hole are parallel and aligned in space. When the fan starts, the airflow can enter through the air inlet duct, pass through the first ventilation hole, and finally flow into the fan's air inlet.

[0023] Compared with related technologies, the rectifier fan provided in this application sets the connection position of the air inlet duct on the main body of the rectifier and the first ventilation hole on the fan frame to a cross-sectional structure with the same shape and size and arranged opposite each other. This ensures smooth and unobstructed airflow at the connection position between the main body and the fan frame, improves the noise reduction effect of the rectifier, and reduces the noise generated during the operation of the fan.

[0024] The shroud provided in this application is the shroud of the aforementioned rectifier fan. Since it is the aforementioned shroud, it also has the aforementioned structure and beneficial effects. Other structures refer to relevant technologies and will not be described in detail here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the rectifier fan disclosed in the embodiments of this application;

[0027] Figure 2 This is an exploded structural diagram of the rectifier fan disclosed in an embodiment of this application;

[0028] Figure 3 This is an isometric view of the fairing disclosed in the embodiments of this application;

[0029] Figure 4 This is a front view of the fairing disclosed in the embodiments of this application;

[0030] Figure 5 This is a side view of the fairing disclosed in an embodiment of this application;

[0031] Figure 6 for Figure 5 Cross-sectional view at point AA;

[0032] Figure 7 for Figure 5 Cross-sectional view at point BB;

[0033] Figure 8 This is a rear view of the fairing disclosed in an embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the structure of the mounting plate disclosed in the embodiments of this application.

[0035] Among them, 100-fairing, 101-air inlet duct, 110-main body, 111-rectifier section, 112-guide section, 120-fan frame, 121-first ventilation hole, 122-first connection hole, 130-air inlet grille, 140-mounting plate, 141-second ventilation hole, 142-second connection hole;

[0036] 200 - Fan, 201 - Air inlet. Detailed Implementation

[0037] The core of this application is to disclose a rectifier fan to reduce the noise during operation.

[0038] Another key aspect of this application is the disclosure of a fairing for the aforementioned rectifier fan.

[0039] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the utility model as described in the claims. It should be noted that, for ease of description, only the parts relevant to the utility model are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0040] In the embodiments of this application, the seam refers to the gap or line at the connection point of two components.

[0041] Combination Figure 1 , Figure 2 , Figure 6 and Figure 7 The rectifier fan disclosed in this application includes a fan 200 and a rectifier shroud 100. The fan has an air inlet 201. The rectifier shroud 100 includes a main body 110 and a fan frame 120. The main body 110 is provided with an air inlet duct 101 for rectifying and guiding air into the fan 200. The fan frame 120 is disposed between the main body 110 and the fan 200 for fixing to the fan 200 or other mounting structures, and for allowing the entire rectifier shroud 100 to be positioned at the air inlet 201 of the fan 200. The fan frame 120 has a first ventilation hole 121, which communicates with both the air inlet duct 101 and the air inlet 201. The connection positions of the air inlet duct 101 and the first ventilation hole 121 have the same cross-sectional shape and size, and are arranged facing each other, that is, the connection positions of the air inlet duct 101 and the first ventilation hole 121 are arranged parallel and aligned in space. When the fan 200 is started, the airflow can enter through the air inlet duct 101 and pass through the first ventilation hole 121, and finally flow into the air inlet 201 of the fan 200.

[0042] Compared to related technologies, the rectifier fan disclosed in this application sets the connection position of the air inlet duct 101 on the main body 110 of the rectifier 100 and the first ventilation hole 121 on the fan frame 120 to a cross-sectional structure with the same shape and size and arranged facing each other. This ensures smooth and unobstructed airflow at the connection position between the main body 110 and the fan frame 120, improves the noise reduction effect of the rectifier 100, and reduces the noise generated during the operation of the fan 200.

[0043] The cross-sectional profile at the connection point between the air inlet duct 101 and the first ventilation hole 121 can be circular, polygonal, or other irregular shapes. This application embodiment does not limit this; it is merely an example. Figure 3 and Figure 4 The diagram illustrates a technical solution where the cross-sectional shape of both the air inlet duct 101 and the first ventilation hole 121 at the connection position is an irregular octagon.

[0044] The fan frame 120 is typically a flat structure such as a circle or rectangle; however, the specific shape of the fan frame 120 is not limited in this embodiment. To achieve the fixation of the fairing 100 and the fan 200, combined with... Figure 8 The fan frame 120 is provided with a first connecting hole 122, a positioning protrusion, a positioning groove, and other connecting structures to fix and position the fan frame 120 and the fan 200 through the connecting structures. For example, combined with... Figure 3 It shows a structure in which a first connecting hole 122 is provided at each of the four corners of the fan frame 120. The first connecting hole 122 can be used to bolt to the fan 200 or other mounting structures, which is convenient for disassembly and assembly.

[0045] Further optimization of the design: Since the fan frame 120 is located at the air inlet 201 of the fan 200, and the air inlet 201 is connected to the first ventilation hole 121, when the fan frame 120 is directly connected to the fan 200, the connection positions of the first ventilation hole 121 and the air inlet 201 can be designed to have the same cross-sectional shape and size, and be arranged facing each other. That is, the connection positions of the air inlet 201 and the first ventilation hole 121 are arranged parallel and aligned in space, so that the airflow can smoothly transition at the connection position between the shroud 100 and the fan 200, thereby ensuring the smoothness of airflow and reducing noise generation. For example, combined with... Figure 3 The fan frame 120 can be directly bolted to the fan 200 through the first connecting hole 122, which is simple in structure and easy to disassemble and assemble.

[0046] Typically, the fan frame 120 and the fan 200 are separate structures. Therefore, in order to reduce airflow disturbance and noise caused by unevenness at the joint between the two, a coating can be applied to the inner wall of the connection between the air inlet 201 and the first ventilation hole 121, that is, the inner wall of the joint between the air inlet 201 and the first ventilation hole 121, so as to cover the joint, ensure smooth airflow, reduce noise generation, and prevent air leakage at the joint, which would affect the power of the fan 200.

[0047] In other embodiments, the rectifier fan further includes a mounting plate 140, with the fan 200 and the fan frame 120 respectively disposed on both sides of the mounting plate 140. The mounting plate 140 has a second ventilation hole 141 connecting the fan 200's air inlet 201 and the air inlet duct 101, thus indirectly connecting the fan 200 and the fan frame 120 via the mounting plate 140. Specifically, in conjunction with... Figure 2 A second connection hole 142 is provided on the mounting plate 140. The mounting plate 140, the main body 110, the fan frame 120 and the fan 200 can be fixed as a whole to the mounting structure such as the cabinet and the bracket through the second connection hole 142. The mounting plate 140 and the mounting structure can be fixed by screws, bolts, pins and other connecting parts. This application embodiment does not limit this.

[0048] Further optimization involves having the first ventilation hole 121 and the second ventilation hole 141 have the same cross-sectional shape and size at their connection points, and arranging them directly opposite each other. This ensures compatibility and a smooth transition at the connection points, allowing airflow to flow smoothly and reducing noise. Alternatively, the second ventilation hole 141 and the air inlet 201 may have the same cross-sectional shape and size at their connection points, and be arranged directly opposite each other. This also ensures compatibility and a smooth transition at the connection points, allowing airflow to flow smoothly and reducing noise.

[0049] In some embodiments, the connection points of the first ventilation hole 121 and the second ventilation hole 141 have the same cross-sectional shape and size, and are arranged facing each other; the connection points of the second ventilation hole 141 and the air inlet 201 also have the same cross-sectional shape and size, and are arranged facing each other, so that the airflow can flow smoothly at both the connection points of the first ventilation hole 121 and the second ventilation hole 141 and the connection point of the second ventilation hole 141 and the air inlet 201. Furthermore, the shape and aperture of the second ventilation hole 141 are consistent at all positions, so that the first ventilation hole 121 and the air inlet 201 are respectively close to one end of the second ventilation hole 141, and the second ventilation hole 141 as a whole has the same cross-sectional shape and size, and is arranged facing each other, thereby ensuring the adaptability and smooth transition of each connection node on the airflow channel formed by the shroud 100 and the fan 200, and thus ensuring the low-noise operation of the fan 200.

[0050] Combination Figure 2 and Figure 9 One or more second ventilation holes 141 can be formed on a mounting plate 140. Each second ventilation hole 141 corresponds to and is connected to both the air inlet 201 and the first ventilation hole 121, meaning that multiple fans 200 can share the same mounting plate 140. Furthermore, the connection structure between the mounting plate 140, the fan frame 120, and the fans 200 can share common connectors and connector holes to reduce costs and improve assembly efficiency. Examples of applications where multiple fans 200 share the same mounting plate 140 include, but are not limited to, heat dissipation for devices such as charging piles and energy storage systems.

[0051] In some embodiments, the main body 110 and the fan frame 120 are integral structures to ensure a smooth transition at the connection between the air inlet duct 101 and the first ventilation hole 121, without any seams that would affect airflow and reduce noise. For example, when both the main body 110 and the fan frame 120 are made of plastic, they can be integrally molded by injection molding, which is low-cost and easy to manufacture; when both the main body 110 and the fan frame 120 are made of metal, they can be integrally formed by welding or other methods, a mature process.

[0052] When the main body 110 and the fan frame 120 are separate structures, in order to reduce the impact of the seam at the connection between the main body 110 and the fan frame 120, the seam can be covered by coating on the inner wall at the connection between the air inlet duct 101 and the first ventilation hole 121, thereby ensuring the smooth flow of air and reducing the generation of noise during the air flow process.

[0053] In a specific embodiment disclosed in this application, combined with Figure 5The main body 110 includes a guide section 112 and a rectifier section 111. The guide section 112 is used to introduce airflow, and the rectifier section 111 is disposed between the guide section 112 and the fan frame 120 for rectification. The inner hole of the guide section 112, the inner hole of the rectifier section 111 and the first ventilation hole 121 are connected in sequence. The inner hole of the guide section 112 and the inner hole of the rectifier section 111 are constructed together as the air inlet duct 101 described above. Along the direction from the guide section 112 to the rectifier section 111, the inner hole of the guide section 112 gradually shrinks until it has the same cross-sectional shape and cross-sectional size as the inner hole of the rectifier section 111. The connection position between the inner hole of the rectifier section 111 and the first ventilation hole 121 has the same cross-sectional shape and cross-sectional size and is arranged facing each other. Compared to the rectifying section 111, the guide section 112 has a larger cross-sectional size at the end furthest from the rectifying section 111 to accommodate and introduce more airflow. As the cross-sectional size of the guide section 112 decreases, the airflow velocity increases to ensure a constant flow rate within the shroud 100. The shroud 100 disclosed in this embodiment can effectively reduce eddies and turbulence in the airflow and increase the power of the fan 200.

[0054] In the direction from the guide section 112 to the rectifying section 111, the cross-sectional shape and size of the inner hole at various positions of the rectifying section 111 can be the same or different. When they are the same, it is convenient to manufacture and arrange the following structures such as the air inlet grille 130 and guide vanes in the inner hole of the rectifying section 111. The cross-sectional shape of the end of the inner hole of the guide section 112 away from the rectifying section 111 can be the same as or different from the cross-sectional shape of the inner hole of the rectifying section 111, allowing for flexible design. This application embodiment does not limit this. For example, in combination with Figures 3-5 It shows a technical solution in which the cross-sectional shape and cross-sectional size of the inner hole at each position of the rectifying section 111 are the same, and the cross-sectional shape of the guide section 112 is first reduced from a circle to an irregular octagon with the same cross-sectional size as the rectifying section 111, and then further reduced to an irregular octagon with the same cross-sectional size as the inner hole of the rectifying section 111.

[0055] In a further embodiment, the shroud 100 also includes an air inlet grille 130, which is disposed within the air inlet duct 101, specifically within the rectification section 111. The air inlet grille 130 is composed of a series of parallel or angled metal strips or meshes, with appropriate gaps between the metal strips or meshes to allow airflow to pass smoothly and achieve a rectification effect. The air inlet grille 130 also prevents foreign objects from entering the fan 200 and avoids accidental contact with the fan 200. Furthermore, the air inlet grille 130 can strengthen the rigidity of the shroud 100, ensuring that the shroud 100 does not deform during long-term use, thereby ensuring the rectification and noise reduction effect of the shroud 100 during long-term use. For some axial flow fans, through methods such as... Figure 4The air inlet grille 130 shown in the figure can provide a pre-rotation angle, so that the airflow has a certain rotation before entering the air inlet 201 of the fan 200, thereby increasing the pressure coefficient of the fan 200. The specific shape of the air inlet grille 130 is not limited in this embodiment.

[0056] In other embodiments, a guide vane is provided inside the fairing 100. The guide vane is used to guide and control the direction of airflow. The shape and angle of the guide vane can be designed according to actual conditions in order to reduce eddies and turbulence and improve the operating efficiency of the fan 200.

[0057] The dimensions of the rectifier fan can be adjusted according to the actual situation. This application embodiment does not limit this. For example, the axial length of the rectifier 100 can be set to 10mm-30mm, which occupies less space and has a good rectification effect.

[0058] To prevent air leakage, a seal can be installed between the shroud 100 and the fan 200. The seal is pressed between the shroud 100 and the fan 200 to prevent air leakage, thereby ensuring the operating efficiency of the fan 200 and reducing noise.

[0059] Combination Figure 3 and Figure 5 The shroud disclosed in this application embodiment is the shroud 100 in the above-mentioned rectifier fan. Since it is the shroud 100, it also has the above-mentioned structure and beneficial effects. Other structures refer to related technologies and will not be described in detail here.

[0060] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed. Additionally, in the description of embodiments in this application, "a plurality of" means two or more.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment unless explicitly excluded by another embodiment. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rectifier fan, characterized in that, include: The fan (200) has an air inlet (201); The fairing (100) includes a main body (110) and a fan frame (120). The main body (110) is provided with an air inlet duct (101). The fan frame (120) is located between the main body (110) and the fan (200) and has a first ventilation hole (121). The first ventilation hole (121) is connected to both the air inlet duct (101) and the air inlet (201). The connection position of the air inlet duct (101) and the first ventilation hole (121) has the same cross-sectional shape and cross-sectional size and is arranged facing each other.

2. The rectifier fan as described in claim 1, characterized in that, The air inlet (201) and the first ventilation hole (121) have the same cross-sectional shape and cross-sectional size at the connection position and are arranged facing each other.

3. The rectifier fan as described in claim 1, characterized in that, It also includes a mounting plate (140), the fan (200) and the fan frame (120) are respectively disposed on both sides of the mounting plate (140), and the mounting plate (140) is provided with a second ventilation hole (141) that connects the air inlet (201) and the first ventilation hole (121).

4. The rectifier fan as described in claim 3, characterized in that, The first ventilation hole (121) and the second ventilation hole (141) have the same cross-sectional shape and cross-sectional dimensions at the connection position and are arranged facing each other; And / or, the second ventilation hole (141) and the air inlet (201) have the same cross-sectional shape and cross-sectional size at the connection position and are arranged opposite each other.

5. The rectifier fan as described in claim 3, characterized in that, One or more second ventilation holes (141) are provided on one of the mounting plates (140), and the second ventilation holes (141) are connected to the air inlet (201) and the first ventilation hole (121) in a one-to-one correspondence.

6. The rectifier fan as described in any one of claims 1-5, characterized in that, The main body (110) and the sector frame (120) are either an integral structure or a separate structure.

7. The rectifier fan as described in any one of claims 1-5, characterized in that, The main body (110) includes a guide section (112) and a rectifying section (111). The rectifying section (111) is disposed between the guide section (112) and the fan frame (120). The inner hole of the guide section (112), the inner hole of the rectifying section (111) and the first ventilation hole (121) are connected in sequence. The inner hole of the guide section (112) and the inner hole of the rectifying section (111) are jointly constructed as the air inlet duct (101). Along the direction from the guide section (112) to the rectifying section (111), the inner hole of the guide section (112) gradually shrinks until it has the same cross-sectional shape and cross-sectional size as the inner hole of the rectifying section (111). The inner hole of the rectifying section (111) and the connection position of the first ventilation hole (121) have the same cross-sectional shape and cross-sectional size and are arranged opposite each other.

8. The rectifier fan as described in claim 7, characterized in that, Along the direction from the guide section (112) to the rectifying section (111), the cross-sectional shape and cross-sectional dimensions of the inner hole at each position of the rectifying section (111) are the same; The cross-sectional shape of the end of the inner hole of the guide section (112) away from the rectifying section (111) may be the same as or different from the cross-sectional shape of the inner hole of the rectifying section (111).

9. The rectifier fan according to any one of claims 1-5, characterized in that, The fairing (100) also includes an air intake grille (130), which is disposed within the air intake duct (101).

10. A fairing, characterized in that, The fairing (100) is as described in any one of claims 1-9.

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