An axial flow fan support assembly

Abstract

This utility model provides an axial flow fan support assembly, belonging to the field of fan technology. It solves the problem of poor practicality of existing supports. In this utility model, the axial flow fan includes a plastic shell with a circumferential outer surface. The support assembly includes two L-shaped frames vertically arranged on both sides of the circumferential surface. Two elongated connecting blocks are vertically formed on the circumferential surface of the plastic shell, located between the circumferential surface and the two frames. Each connecting block has a vertically embedded positioning block made of metal. Multiple connecting holes are horizontally opened on the side of each connecting block near the corresponding frame, and these holes are vertically distributed. One end of each connecting hole extends to the corresponding positioning block. A through hole is correspondingly passed through the upper end of the frame, and a bolt passes through the through hole. The bolt shank is inserted into one of the connecting holes and threadedly connected to the corresponding positioning block, with the bolt head pressed against the upper end of the corresponding frame. This axial flow fan support assembly is quite practical.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, and relates to an axial flow fan, and more particularly to an axial flow fan support assembly. Background Technology

[0002] Axial flow fans, with their advantages of axial airflow, large flow rate, and compact structure, have become the first choice for ventilation, fire smoke extraction, and industrial heat dissipation.

[0003] The support frame is an important component of the axial flow fan, used to support the entire axial flow fan. Its structure is as disclosed in the Chinese Patent Database (application number: 201320570366.3), which includes a frame body. The frame body includes a horizontal base, on which two parallel support frames for supporting the fan housing are vertically installed. The inner side of each support frame is provided with a rotatable connecting plate, and the connecting plate is provided with mounting holes that connect to the left and right sides of the fan housing.

[0004] In the aforementioned fans, the position of the connecting plate is fixed, which prevents the overall height of the fan casing from being adjusted, thus limiting its application range. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a practical axial flow fan support assembly.

[0006] The objective of this utility model can be achieved through the following technical solution: an axial flow fan support assembly, wherein the axial flow fan includes a plastic shell with a circumferential surface on its outer side, and the support assembly includes two L-shaped frames respectively vertically arranged on both sides of the circumferential surface. The plastic shell has two vertically formed elongated connecting blocks on its circumferential surface, located between the circumferential surface and the two frames respectively; each connecting block has a vertically embedded positioning block made of metal material; multiple connecting holes are horizontally opened on the side of each connecting block near the corresponding frame, and the multiple connecting holes on the same connecting block are vertically distributed, with one end of each connecting hole extending to the corresponding positioning block; a through hole is correspondingly passed through the upper end of the frame, and a bolt passes through the through hole, with the bolt shank inserted into one of the connecting holes and threadedly connected to the corresponding positioning block, the bolt head pressing against the upper end of the corresponding frame.

[0007] When using it, first screw the bolt rod into the corresponding connection hole, then swing the plastic shell to adjust the angle, and then tighten the bolt to lock the plastic shell onto the frame.

[0008] Each connecting block has a row of vertical connecting holes. Through the cooperation of connecting holes, bolts and through holes on the frame, the overall height of the fan can be adjusted without affecting the fan's swing adjustment angle, so as to adapt to more different working conditions and have better adaptability.

[0009] Meanwhile, metal positioning blocks for connecting bolts are embedded in the connecting block, which can not only strengthen the bolt meshing strength, but also increase the weight of the plastic shell, thereby lowering the overall center of gravity of the fan, making the fan more stable and improving its working stability.

[0010] In the aforementioned axial flow fan bracket assembly, the positioning block and the plastic housing are integrally molded by injection molding to effectively increase the bonding strength between the two and make the fan positioning more stable.

[0011] In the aforementioned axial flow fan support assembly, an annular positioning groove is formed on the outer wall of the positioning block, and the positioning groove and the positioning block are coaxially arranged; the connecting block extends into the positioning groove and forms a positioning ring that matches the positioning groove within the positioning groove. The positioning block and the positioning groove cooperate to further restrict the movement of the positioning block in the axial direction and further strengthen the bonding strength between the positioning block and the plastic shell.

[0012] In the aforementioned axial flow fan bracket assembly, the axial cross-section of the positioning groove is arc-shaped, so that the molten plastic can flow more smoothly into the positioning groove during injection molding, which is beneficial for the forming of the positioning ring.

[0013] In the aforementioned axial flow fan bracket assembly, the connecting hole is formed by a coaxially arranged circular hole segment and a threaded segment that mates with the bolt shank. The two ends of the circular hole segment are respectively formed on the corresponding connecting block and the corresponding positioning block, and the threaded segment is formed on the corresponding positioning block. Since the connecting hole is machined after injection molding, this design facilitates its machining.

[0014] In the aforementioned axial flow fan support assembly, a convex tube is horizontally formed on the frame body to match the circular hole section. After one of the threaded sections is screwed into the bolt shank, the corresponding convex tube is sleeved over the corresponding bolt shank and inserted into the corresponding circular hole section. The cooperation between the convex tube and the circular hole section allows the frame body and the connecting block to form a pre-connection, facilitating subsequent bolt installation.

[0015] Compared with existing technologies, this axial flow fan support assembly has the following advantages:

[0016] 1. A row of connection holes is vertically set on each connecting block. Through the cooperation of the connection holes, bolts and through holes set on the frame, the overall height of the fan can be adjusted without affecting the adjustment angle of the fan swing, so as to adapt to more different working conditions and have better adaptability.

[0017] 2. Embedding metal positioning blocks for connecting bolts inside the connecting block can strengthen the bolt meshing strength and increase the weight of the plastic shell, thereby lowering the overall center of gravity of the fan, making the fan more stable and improving its working stability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of an axial flow fan.

[0019] Figure 2 This is a cross-sectional schematic diagram of an axial flow fan.

[0020] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0021] In the diagram, 1. Plastic outer shell; 1a. Circumferential surface; 1b. Connecting block; 1c. Connecting hole; 1c1. Circular hole section; 1c2. Threaded section; 1d. Positioning ring; 2. Frame; 2a. Protruding tube; 3. Positioning block; 4. Bolt. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figure 1 As shown, in the axial flow fan bracket assembly, the axial flow fan includes a plastic shell 1 with an outer surface 1a of circular shape; the bracket assembly includes two frames 2 that are vertically arranged on both sides of the circular surface 1a and are L-shaped. In the actual product, the lower end of the frame 2 has 4 bolt holes for vertically penetrating and positioning the frame 2.

[0024] Specifically, such as Figure 1 and Figure 2 As shown, the plastic shell 1 has two vertically formed elongated connecting blocks 1b on its circumferential surface 1a. These connecting blocks 1b are located between the circumferential surface 1a and the two frames 2, respectively. In other words, each frame 2 has a connecting block 1b between it and the circumferential surface 1a. Figure 1 As shown, each of the two connecting blocks 1b has a vertically embedded positioning block 3 made of metal. Multiple connecting holes 1c are horizontally opened on the side of each connecting block 1b near the corresponding frame 2. These connecting holes 1c are vertically distributed, with one end extending to the corresponding positioning block 3. A through hole is correspondingly passed through the upper end of the frame 2, and a bolt 4 passes through this hole. The shank of the bolt 4 is inserted into one of the connecting holes 1c and threadedly connected to the corresponding positioning block 3. The head of the bolt 4 is pressed against the upper end of the corresponding frame 2. There are two bolts 4, two through holes, and two frame 2s, and their positions correspond one-to-one.

[0025] When using it, first screw the bolt 4 rod into the corresponding connection hole 1c, then swing the plastic shell 1 to adjust the angle, and then tighten the bolt 4 to lock the plastic shell 1 onto the frame 2.

[0026] A row of connecting holes 1c is vertically set on each connecting block 1b. Through the cooperation of connecting holes 1c, bolts 4 and through holes set on the frame 2, the overall height of the fan can be adjusted without affecting the fan swing adjustment angle, so as to adapt to more different working conditions and have better adaptability.

[0027] Meanwhile, a metal positioning block 3 for connecting bolts 4 is embedded in the connecting block 1b, which can not only strengthen the meshing strength of bolts 4, but also increase the weight of plastic shell 1, so that the overall center of gravity of the fan is lowered, thereby making the fan more stable and with good working stability.

[0028] In this embodiment,

[0029] Positioning block 3 is made of cast iron; naturally, positioning block 3 can also be made of stainless steel, aluminum alloy or other materials.

[0030] The positioning block 3 and the plastic shell 1 are integrally molded by injection molding to effectively increase the bonding strength between the two and make the fan positioning more stable. Further, an annular positioning groove is formed on the outer wall of the positioning block 3, and the positioning groove and the positioning block 3 are coaxially arranged; the connecting block 1b extends into the positioning groove and forms a positioning ring 1d that matches the positioning groove within the groove. The positioning block 3 and the positioning groove cooperate to further restrict the movement of the positioning block 3 in the axial direction and further strengthen the bonding strength between the positioning block 3 and the plastic shell 1. Preferably, the axial cross-section of the positioning groove is arc-shaped so that the molten plastic can flow more smoothly into the positioning groove during injection molding, which is beneficial for the molding of the positioning ring 1d.

[0031] like Figure 2 and Figure 3 As shown, the specific structure of the connecting block 1b is as follows: the connecting hole 1c is formed by a coaxially arranged circular hole section 1c1 and a threaded section 1c2 that mates with the bolt 4 shank. The two ends of the circular hole section 1c1 are respectively formed on the corresponding connecting block 1b and the corresponding positioning block 3, and the threaded section 1c2 is formed on the corresponding positioning block 3. Since the connecting hole 1c is processed after injection molding, the above design facilitates the processing of the connecting hole 1c. The frame 2 has a horizontally formed convex tube 2a that matches the circular hole section 1c1. After one of the threaded sections 1c2 is screwed into the bolt 4 shank, the corresponding convex tube 2a is fitted over the corresponding bolt 4 shank and inserted into the corresponding circular hole section 1c1. Through the cooperation of the convex tube 2a and the circular hole section 1c1, the frame 2 and the connecting block 1b are pre-connected, facilitating the subsequent installation of the bolt 4.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An axial flow fan support assembly, wherein the axial flow fan includes a plastic shell (1) with an outer surface being a circumferential surface (1a), and the support assembly includes two L-shaped frames (2) respectively vertically arranged on both sides of the circumferential surface (1a), characterized in that, The plastic shell (1) has a long strip-shaped connecting block (1b) vertically formed on the circumferential surface (1a). There are two connecting blocks (1b) and they are located between the circumferential surface (1a) and the two frames (2). A positioning block (3) made of metal material is vertically embedded in each of the two connecting blocks (1b). Multiple connecting holes (1c) are horizontally opened on the side of the connecting block (1b) close to the corresponding frame (2). The multiple connecting holes (1c) on the same connecting block (1b) are vertically distributed, and one end of the connecting hole (1c) extends to the corresponding positioning block (3). A through hole is correspondingly passed through the upper end of the frame (2). A bolt (4) is inserted into the through hole. The shank of the bolt (4) is inserted into one of the connecting holes (1c) and threadedly connected to the corresponding positioning block (3). The head of the bolt (4) is pressed against the upper end of the corresponding frame (2).

2. The axial flow fan support assembly according to claim 1, characterized in that, The positioning block (3) and the plastic shell (1) are integrally formed by injection molding.

3. The axial flow fan support assembly according to claim 2, characterized in that, The outer wall of the positioning block (3) is provided with an annular positioning groove, and the positioning groove and the positioning block (3) are coaxially arranged; the connecting block (1b) extends into the positioning groove and forms a positioning ring (1d) that matches the positioning groove in the positioning groove.

4. The axial flow fan support assembly according to claim 3, characterized in that, The axial cross-section of the positioning groove is arc-shaped.

5. The axial flow fan support assembly according to claim 1, characterized in that, The connecting hole (1c) is formed by a coaxially arranged circular hole section (1c1) and a threaded section (1c2) that mates with the shank of the bolt (4). The two ends of the circular hole section (1c1) are respectively formed on the corresponding connecting block (1b) and the corresponding positioning block (3), and the threaded section (1c2) is formed on the corresponding positioning block (3).

6. The axial flow fan support assembly according to claim 5, characterized in that, The frame (2) has a horizontally formed convex tube (2a) that matches the round hole section (1c1). After the bolt (4) is screwed into one of the threaded sections (1c2), the corresponding convex tube (2a) is sleeved outside the corresponding bolt (4) and the convex tube (2a) is inserted into the corresponding round hole section (1c1).

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