Fan volute

Abstract

In order to solve the problems that an existing fan volute is complex in manufacturing process and low in production efficiency, the product quality cannot be guaranteed sometimes, and meanwhile plates are wasted, the fan volute is characterized in that a plurality of protrusions (5) are arranged on the two sides, connected with two side plates (2), of a volute plate (1) respectively; and a plurality of grooves (7) which can be matched with the plurality of bulges (5) on the two sides of the worm plate (1) are arranged on the side plate (2) connected with the worm plate (1).

Description

Technical Field

[0001] This utility model relates to a fan, and more particularly to a fan casing composed of a side plate and a volute. Background Technology

[0002] Currently, a type of wind turbine casing has been publicly available on the market. Its structural features are as follows: it consists of side plates and a worm plate, with the worm plate placed between two side plates. The two side plates and the worm plate are connected into a whole by electric welding. During processing, a pattern needs to be drawn on the side plates before welding. Then, the bent worm plate is placed on the side plates using tooling fixtures, and the worm plate is fixed to one side plate by spot welding. Subsequently, the other side plate is placed on the worm plate. After adjustment, the other side plate is fixed to the worm plate by spot welding. Therefore, the manufacturing process is relatively complex, the production efficiency is low, the product quality is sometimes not guaranteed, and it also wastes material. Summary of the Invention

[0003] The purpose of this invention is to provide a fan volute that is simple to manufacture, can improve production efficiency, ensure product quality, and saves on sheet metal.

[0004] To achieve the above objectives, this utility model provides a fan casing comprising side plates and a worm plate. The worm plate is positioned between two side plates and is connected to the two side plates and the worm plate as a whole by electric welding. The worm plate is formed by connecting a front worm plate to a rear worm plate via multiple middle worm plates. Multiple protrusions are provided on the two sides where the front worm plate, the multiple middle worm plates, and the rear worm plate connect to the two side plates. Multiple grooves that can mate with the multiple protrusions on the two sides of the worm plate are provided on the side plates where the side plates connect to the worm plate. At least one protrusion or groove is provided on the side of the front worm plate where the front worm plate connects to the middle worm plate. At least one groove or protrusion that can mate with the protrusion or groove on the front worm plate is provided on the side of the middle worm plate where the middle worm plate connects to the front worm plate. At least one protrusion or groove is provided on the side of the rear worm plate where the rear worm plate connects to the middle worm plate. At least one groove or protrusion that can mate with the protrusion or groove on the rear worm plate is provided on the side of the middle worm plate where the middle worm plate connects to the rear worm plate.

[0005] The front volute includes a rectangular segment and a trapezoidal segment, and the long side of the rectangular segment is connected to the short side of the trapezoidal segment to form a whole. At least one protrusion or groove is provided on the long side of the rectangular segment.

[0006] The rear worm gear includes a rectangular segment and a trapezoidal segment, and the long side of the rectangular segment is connected to the short side of the trapezoidal segment to form a whole. At least one protrusion or groove is provided on the long side of the rectangular segment.

[0007] Multiple grooves are evenly distributed along the edge of the side plate at specified intervals.

[0008] A fan casing can also be composed of side plates and a worm plate, with the worm plate placed between the two side plates and the two side plates and the worm plate connected as a whole by electric welding. Multiple protrusions are provided on the two sides where the worm plate connects to the two side plates, and multiple grooves are provided on the side plates where the side plates connect to the worm plate to engage with the multiple protrusions on the two sides of the worm plate.

[0009] With this structure, the worm gear is formed by connecting a front worm gear to a rear worm gear via multiple middle worm gears. Multiple protrusions are provided on the two sides connecting the front worm gear, the multiple middle worm gears, and the rear worm gear to the two side plates. Multiple grooves that mate with the protrusions on the two sides of the worm gear are provided on the side plates connecting the side plates to the worm gears. At least one protrusion or groove is provided on the side of the front worm gear connecting the front and middle worm gears. At least one groove or protrusion that mates with the protrusion or groove on the front worm gear is provided on the side of the middle worm gear connecting the middle worm gear. At least one protrusion or groove is provided on the side of the rear worm gear connecting the middle and rear worm gears. At least one groove or protrusion that mates with the protrusion or groove on the rear worm gear is provided on the side of the middle worm gear connecting the middle and rear worm gears. Positioning via the engagement of protrusions and grooves eliminates the need for drawing patterns on the side plates, simplifying the manufacturing process, improving production efficiency, ensuring product quality, and saving material. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0011] Appendix Figure 1 This is a three-dimensional schematic diagram of a fan volute according to the present invention.

[0012] Appendix Figure 2 This is a front view schematic diagram of a fan volute side plate according to the present invention.

[0013] Appendix Figure 3 This is a schematic diagram showing the unfolded cross-section of a fan volute casing and volute plate according to this utility model.

[0014] Appendix Figure 4 It is attached Figure 3 A magnified diagram of a partial explosion.

[0015] In the diagram: 1. worm gear 2. Side plate 3. Front worm gear 4. Middle worm gear 5. Protrusion 6. Rear worm gear 7. Groove. Detailed Implementation

[0016] Appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4The present invention discloses a fan casing, comprising side plates 2 and worm plates 1. The worm plates 1 are placed between the two side plates 2 and connected to each other by electric welding. The worm plates 1 are formed by connecting a front worm plate 3 to a rear worm plate 6 via multiple middle worm plates 4. Multiple protrusions 5 are provided on the two sides where the front worm plate 3, the multiple middle worm plates 4, and the rear worm plate 6 connect to the two side plates 2. Multiple grooves 7 are provided on the side plates 2 where the side plates 2 connect to the worm plates 1, which can mate with the multiple protrusions 5 on the two sides of the worm plates 1. At least one protrusion 5 or groove 7 is provided on the side of the front worm plate 3 where the front worm plate 3 connects to the middle worm plate 4. At least one groove 7 or protrusion 5 that can cooperate with the protrusion 5 or groove 7 on the front worm plate 3 is provided on the side of the middle worm plate 4 where the middle worm plate 4 connects to the front worm plate 3. At least one protrusion 5 or groove 7 is provided on the side of the rear worm plate 6 where the rear worm plate 6 connects to the middle worm plate 4. At least one groove 7 or protrusion 5 that can cooperate with the protrusion 5 or groove 7 on the rear worm plate 6 is provided on the side of the middle worm plate 4 where the middle worm plate 4 connects to the rear worm plate 6.

[0017] Appendix Figure 3 The front volute 3 shown includes a rectangular segment and a trapezoidal segment, with one long side of the rectangular segment connected to the short side of the trapezoidal segment to form a whole. At least one protrusion 5 or groove 7 is provided on one long side of the rectangular segment. The rear volute 6 includes a rectangular segment and a trapezoidal segment, with one long side of the rectangular segment connected to the short side of the trapezoidal segment to form a whole. At least one protrusion 5 or groove 7 is provided on one long side of the rectangular segment.

[0018] Appendix Figure 2 As shown, multiple grooves 7 are evenly distributed along the edge of the side plate 2 at specified intervals.

[0019] Appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 The fan casing shown can also be composed of a side plate 2 and a worm plate 1. The worm plate 1 is placed between the two side plates 2, and the two side plates 2 and the worm plate 1 are connected into a whole by electric welding. Multiple protrusions 5 are respectively provided on the two sides where the worm plate 1 connects to the two side plates 2. Multiple grooves 7 are provided on the side plate 2 where the side plate 2 connects to the worm plate 1, which can cooperate with the multiple protrusions 5 on the two sides of the worm plate 1.

Claims

1. A fan casing, comprising side plates and a worm gear, wherein the worm gear is positioned between two side plates and the two side plates and the worm gear are connected as a whole by electric welding, characterized in that: The worm gear (1) is formed by connecting a front worm gear (3) to a rear worm gear (6) via multiple middle worm gears (4). Multiple protrusions (5) are provided on the two sides where the front worm gear (3), the multiple middle worm gears (4), and the rear worm gear (6) connect to the two side plates (2). Multiple grooves (7) are provided on the side plate (2) where the side plate (2) connects to the worm gear (1), and at least one protrusion (5) or groove (7) is provided on the side of the front worm gear (3) where the front worm gear (3) connects to the middle worm gears (4). 7) At least one groove (7) or protrusion (5) that can cooperate with the protrusion (5) or groove (7) on the side of the middle worm plate (4) that connects the middle worm plate (4) and the front worm plate (3). At least one protrusion (5) or groove (7) is provided on the side of the rear worm plate (6) that connects the rear worm plate (6) and the middle worm plate (4). At least one groove (7) or protrusion (5) that can cooperate with the protrusion (5) or groove (7) on the rear worm plate (6) is provided on the side of the middle worm plate (4) that connects the middle worm plate (4) and the rear worm plate (6).

2. The fan casing according to claim 1, characterized in that: The front volute (3) includes a rectangular segment and a trapezoidal segment, and the long side of the rectangular segment is connected to the short side of the trapezoidal segment to form a whole. At least one protrusion (5) or groove (7) is provided on the long side of the rectangular segment.

3. A fan casing according to claim 1, characterized in that: The rear worm (6) includes a rectangular segment and a trapezoidal segment, and the long side of the rectangular segment is connected to the short side of the trapezoidal segment to form a whole. At least one protrusion (5) or groove (7) is provided on the long side of the rectangular segment.

4. A fan casing according to claim 1, characterized in that: Multiple grooves (7) are evenly distributed along the edge of the side plate (2) at specified intervals.

5. A fan casing, comprising side plates and a worm gear, wherein the worm gear is positioned between two side plates and the two side plates and the worm gear are connected as a whole by electric welding, characterized in that: Multiple protrusions (5) are provided on the two sides of the worm plate (1) and the two side plates (2), and multiple grooves (7) are provided on the side plate (2) that connect the side plate (2) and the worm plate (1) to engage with the multiple protrusions (5) on the two sides of the worm plate (1).

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