A novel centrifugal fan casing

Abstract

This utility model provides a novel centrifugal fan housing, belonging to the technical field of fan housings. It solves the problem of inconvenient maintenance of existing fans. The novel centrifugal fan housing includes a fan housing with an air inlet and an air outlet, and an air inlet interface located at the air inlet. A connecting seat is provided on the air inlet interface, and a connecting post is provided on the fan housing. The connecting seat has a connecting hole that mates with the connecting post. A fixing part is provided on the connecting seat at its upper end relative to the inner wall of the connecting hole. An installation groove for mounting the fixing part is provided on the connecting part, and a locking mechanism for locking the fixing part is provided on the side of the connecting part relative to the installation groove. This utility model has the advantage of convenient maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of fan housing, and relates to a centrifugal fan housing, and particularly to a novel centrifugal fan housing. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas. They are a type of driven fluid machinery. Centrifugal fans are widely used in ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; grain drying and conveying; wind tunnel air source and air filling and propulsion for hovercraft, etc.

[0003] Currently, the casing and air inlet of existing centrifugal fans are usually connected by bolts, which causes inconvenience when staff need to disassemble the air inlet and perform internal maintenance on the centrifugal fan. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a novel centrifugal fan housing that facilitates the disassembly and assembly of the air inlet interface.

[0005] The objective of this utility model can be achieved through the following technical solution: A novel centrifugal fan housing, comprising a fan housing having an air inlet and an air outlet and an air inlet interface disposed at the air inlet, characterized in that a connecting seat is disposed on the air inlet interface, a connecting column is disposed on the fan housing, a connecting hole is provided on the connecting seat to cooperate with the connecting column, a fixing part is disposed on the connecting seat at the upper end relative to the inner wall of the connecting hole, an installation groove for mounting the fixing part is provided on the connecting column, and a locking mechanism for locking the fixing part is disposed on the connecting part at the side relative to the installation groove.

[0006] In the aforementioned novel centrifugal fan housing, the connecting portion and the side relative to the mounting groove are provided with a mounting hole for the locking mechanism to move. The locking mechanism includes a locking block, a pressing block, and a locking spring.

[0007] In the aforementioned novel centrifugal fan housing, the side wall of the locking block is provided with a limiting slider, and the connecting hole and the mounting groove are provided with limiting grooves for the limiting slider to move.

[0008] In the aforementioned novel centrifugal fan housing, one end of the locking spring abuts against the compression block, and the other end of the locking spring abuts against the bottom of the mounting hole.

[0009] In the aforementioned novel centrifugal fan housing, the air inlet is provided with several limiting posts, and the fan housing is provided with several limiting holes that cooperate with the limiting posts.

[0010] In the aforementioned novel centrifugal fan housing, a limiting part is provided on the connecting portion and at the upper end relative to the mounting hole.

[0011] Compared with the prior art, this utility model can quickly complete the assembly and disassembly of the fan housing and air inlet through the set snap-fit ​​mechanism, making subsequent maintenance more convenient. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0014] Figure 3 This is a partially enlarged, unlocked structural diagram of point A of this utility model.

[0015] Figure 4 This is a partially enlarged schematic diagram of the locking structure at point B of this utility model.

[0016] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0017] In the diagram, 1 is the air inlet; 2 is the air outlet; 3 is the fan housing; 4 is the air inlet interface; 5 is the connecting seat; 6 is the connecting column; 7 is the connecting hole; 8 is the fixing part; 9 is the mounting groove; 10 is the locking mechanism; 11 is the mounting hole; 12 is the locking block; 13 is the pressing block; 14 is the locking spring; 15 is the limit slider; 16 is the limit slide groove; 17 is the limit column; 18 is the limit hole; and 19 is the limit part. Detailed Implementation

[0018] 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.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the centrifugal fan housing of this novel type includes a fan housing 3 having an air inlet 1 and an air outlet 2, and an air inlet interface 4 disposed at the air inlet 1. The air inlet interface 4 is characterized by having a connecting seat 5, a connecting post 6 disposed on the fan housing 3, a connecting hole 7 on the connecting seat 5 that mates with the connecting post 6, a fixing part 8 disposed on the connecting seat 5 at its upper end relative to the inner wall of the connecting hole 7, an mounting groove 9 on the connecting post 6 for mounting the fixing part 8, and a locking mechanism 10 for locking the fixing part 8 disposed on the connecting part at its side relative to the mounting groove 9.

[0020] To elaborate further, the connecting part has a mounting hole 11 on its side relative to the mounting groove 9 for the locking mechanism 10 to move. The locking mechanism 10 includes a locking block 12, a pressing block 13 and a locking spring 14.

[0021] To elaborate further, the side wall of the locking block 12 is provided with a limiting slider 15, and the connecting hole 7 and the mounting groove 9 are provided with limiting grooves 16 for the limiting slider 15 to move, thereby limiting the locking block 12 vertically and horizontally. During installation, the air inlet 4 is positioned, the fixing part 8 is placed on the mounting groove 9, and then the locking block 12 is pushed to move above the fixing part 8. After the pressing block 13 loses the constraint of the locking block 12, it automatically resets under the force of the locking spring 14 and limits the left and right movement of the locking block 12, thereby completing the installation.

[0022] To elaborate further, one end of the locking spring 14 abuts against the pressing block 13, and the other end of the locking spring 14 abuts against the bottom of the mounting hole 11.

[0023] To elaborate further, the air inlet 4 is provided with several limiting posts 17, and the fan housing 3 is provided with several limiting holes 18 that cooperate with the limiting posts 17 to prevent rotation and increase radial support force.

[0024] To elaborate further, a limiting part 19 is provided on the connecting part and at the upper end relative to the mounting hole 11 to prevent the fastener from being squeezed and falling off when locked.

[0025] 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.

[0026] Although this document frequently uses terms such as air inlet 1, air outlet 2, fan housing 3, air inlet interface 4, connecting seat 5, connecting post 6, connecting hole 7, fixing part 8, mounting groove 9, locking mechanism 10, mounting hole 11, locking block 12, pressing block 13, locking spring 14, limiting slider 15, limiting groove 16, limiting post 17, limiting hole 18, and limiting part 19, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A novel centrifugal fan housing (3), comprising a fan housing (3) having an air inlet (1) and an air outlet (2) and an air inlet interface (4) disposed at the air inlet (1), characterized in that, The air inlet (4) is provided with a connecting seat (5), the fan housing (3) is provided with a connecting post (6), the connecting seat (5) is provided with a connecting hole (7) that cooperates with the connecting post (6), the connecting seat (5) is provided with a fixing part (8) at the upper end of the inner wall of the connecting hole (7), the connecting post (6) is provided with a mounting groove (9) for the fixing part (8) to be installed, and the connecting part is provided with a locking mechanism (10) for locking the fixing part (8) on the side of the mounting groove (9).

2. The novel centrifugal fan housing (3) according to claim 1, characterized in that, The connecting part is provided with a mounting hole (11) on the side relative to the mounting groove (9) for the locking mechanism (10) to move. The locking mechanism (10) includes a locking block (12), a pressing block (13) and a locking spring (14).

3. The novel centrifugal fan housing (3) according to claim 2, characterized in that, The side wall of the locking block (12) is provided with a limiting slider (15), and the connecting hole (7) and the mounting groove (9) are provided with limiting grooves (16) for the limiting slider (15) to move.

4. The novel centrifugal fan housing (3) according to claim 2, characterized in that, One end of the locking spring (14) abuts against the pressing block (13), and the other end of the locking spring (14) abuts against the bottom of the mounting hole (11).

5. The novel centrifugal fan housing (3) according to claim 1, characterized in that, The air inlet (4) is provided with several limiting posts (17), and the fan housing (3) is provided with several limiting holes (18) that cooperate with several of the limiting posts (17).

6. The novel centrifugal fan housing (3) according to claim 1, characterized in that, A limiting part (19) is provided on the connecting part and at the upper end relative to the mounting hole (11).

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