Centrifugal smoke exhaust fan

Abstract

A centrifugal smoke exhaust fan effectively solves the problem that fins are not easy to clean. Comprising a volute, a rotating shaft is rotationally arranged in the volute, a first back plate and a second back plate are arranged on the rotating shaft, a plurality of fins are detachably arranged between the first back plate and the second back plate, a plurality of limiting blocks are arranged on the first back plate in a surrounding mode around the center position, a limiting groove is formed between every two adjacent limiting blocks, and an inverted-L-shaped hook plate is arranged on the edge of the first back plate. The fins are clamped between the limiting grooves, the outer ends of the fins are located below the hook plate, the inner ends of the fins are fixed to the first back plate through the pressing plate, the second back plate covers the ends of the fins, and a hole is formed in the middle of the second back plate. The fan is simple and ingenious in structure and convenient to use, and the fins can be independently taken out of the fan and are convenient to clean, so that the smoke exhaust efficiency of the fan is ensured, the fan is kept clean and tidy, and the food safety problem is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust fans, in particular to a centrifugal smoke exhaust fan. Background Art

[0002] The kitchen is an area with heavy oil smoke, so a smoke exhaust fan needs to be installed to quickly remove the oil smoke. The centrifugal smoke exhaust fan is a commonly used fan equipment with strong suction power and can quickly exhaust smoke. However, due to the large amount of oil in the kitchen, it is easy to adhere to the fan fins and affect the normal operation of the fan.

[0003] Most of the existing fan fins are of an integrated structure. The oil stains on the fins are not easy to clean. The long-term accumulation of dirt can easily cause hygiene problems and affect food safety. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a centrifugal smoke exhaust fan, which effectively solves the problem that the fins are difficult to clean.

[0005] The technical solution to the technical problem is: a centrifugal smoke exhaust fan, including a volute, a rotating shaft is rotatably arranged inside the volute, a first back plate and a second back plate are arranged on the rotating shaft, a plurality of fins are detachably arranged between the first back plate and the second back plate, a plurality of limit blocks are arranged around the center position on the first back plate, limit grooves are arranged between adjacent limit blocks, an inverted L-shaped hook plate is arranged on the edge of the first back plate, the fins are stuck between the limit grooves and the outer ends are located below the hook plate, the inner ends of the fins are fixed to the first back plate via a pressure plate, the second back plate covers the ends of the fins and a hole is opened in the middle of the second back plate.

[0006] Preferably, cover plates are provided at both ends of the volute, a motor for driving the rotating shaft is fixed outside the cover plate on one side, and an opening is provided in the middle of the cover plate on the other side.

[0007] Preferably, a key strip is provided on the rotating shaft, and a connecting hole matching the rotating shaft is provided at the center of the first back plate.

[0008] Preferably, a connecting plate extends out from the end of the fin, and the connecting plate cooperates with the hook plate and the pressure plate to complete a fixed connection with the first back plate.

[0009] Preferably, a plurality of connecting columns are provided on the inner side of the first back plate, and the pressure plate is fixed on the connecting columns.

[0010] Preferably, a plurality of positioning blocks corresponding to the fins are provided on the inner side of the second back plate, positioning grooves are provided between adjacent positioning blocks, and the fins are inserted into the positioning grooves.

[0011] The utility model has a simple and ingenious structure and is easy to use. The fins can be taken out of the fan separately for easy cleaning, thereby ensuring the smoke exhaust efficiency of the fan and keeping it clean, thereby reducing food safety problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0014] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0015] Figure 4 It is a structural schematic diagram of the first back plate in the utility model.

[0016] Figure 5 It is a structural schematic diagram of the second back plate in the utility model.

[0017] Figure 6 It is a structural schematic diagram of the medium pressure plate of the utility model. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0019] Depend on Figures 1 to 6 It can be known that a centrifugal smoke exhaust fan includes a volute 1, a rotating shaft 2 is rotatably arranged inside the volute 1, a motor for driving the rotating shaft 2 is fixed outside a cover plate 10 on one side, an opening is provided in the middle of the cover plate 10 on the other side, a first back plate 3 and a second back plate 4 are arranged on the rotating shaft 2, a plurality of fins 5 are detachably arranged between the first back plate 3 and the second back plate 4, a plurality of limit blocks 6 are arranged around the center position on the first back plate 3, limit grooves 7 are arranged between adjacent limit blocks 6, an inverted L-shaped hook plate 8 is provided on the edge of the first back plate 3, the fin 5 is clamped between the limit grooves 7 and the outer end is located below the hook plate 8, the inner end of the fin 5 is fixed to the first back plate 3 via a pressing plate 9, the second back plate 4 covers the end of the fin 5 and a hole is opened in the middle of the second back plate 4.

[0020] When the utility model is used in a specific way,

[0021] First, assemble the first back plate 3 and the second back plate 4 with the fins 5, then place them in the volute 1, and use the cover plates 10 on both sides of the volute 1 for sealing, start the motor, drive the shaft 2 to rotate, drive the first back plate 3 and the second back plate 4 and the fins 5 to rotate, thereby generating centrifugal force, so that the oil smoke enters from the middle opening of the cover plate 10 and is discharged from the outer outlet of the volute 1.

[0022] The opening on the second back plate 4 and the opening on the cover plate 10 are smaller than the distance between the inner side of the fin 5 and the rotating shaft 2 after installation, so that the fin 5 generates suction force on the oil smoke after rotation, thereby discharging the oil smoke.

[0023] The second back plate 4 is pressed onto the fins 5 via the cover plate 10 to support and position the fins 5 .

[0024] A key strip is provided on the rotating shaft 2, and a connecting hole 11 matching with the rotating shaft 2 is provided at the center of the first back plate 3, so that the rotating shaft 2 drives the first back plate 3 to rotate, thereby driving the fins 5 to rotate and generating centrifugal force.

[0025] A connecting plate 12 extends from the end of the fin 5, and the connecting plate 12 cooperates with the hook plate 8 and the pressure plate 9 to complete a fixed connection with the first back plate 3. The connecting plate 12 slides to the bottom of the hook plate 8, and the hook plate 8 limits it in the vertical direction, and the limit block 6 limits it on both sides. Together with the action of the pressure plate 9, the fin 5 is fixed on the first back plate 3.

[0026] A plurality of connecting posts 13 are provided on the inner side of the first back plate 3 , and a pressure plate 9 is fixed on the connecting posts 13 . A through hole is provided on the pressure plate 9 , and the pressure plate 9 can be sleeved on the connecting posts 13 for fixing. The pressure plate 9 is locked with screws, thereby fixing the fins 5 on the first back plate 3 .

[0027] A plurality of positioning blocks 14 corresponding to the fins 5 are provided on the inner side of the second back plate 4, and positioning grooves 15 are provided between adjacent positioning blocks 14. The fins 5 are inserted into the positioning grooves 15, and the positions of the fins 5 and the positioning grooves 15 correspond. The second back plate 4 supports the end positions of the fins 5 to prevent the fins 5 from deformation.

[0028] Compared with the prior art, the utility model has the following beneficial effects: the fins can be removed separately for easy cleaning, thereby reducing the adhesion of oil stains and improving food hygiene and safety.

Claims

1. A centrifugal smoke exhaust fan, characterized in that: The invention comprises a volute (1), a rotating shaft (2) is rotatably arranged inside the volute (1), a first back plate (3) and a second back plate (4) are arranged on the rotating shaft (2), a plurality of fins (5) are detachably arranged between the first back plate (3) and the second back plate (4), a plurality of limit blocks (6) are arranged around the center position on the first back plate (3), limit grooves (7) are arranged between adjacent limit blocks (6), an inverted L-shaped hook plate (8) is arranged on the edge of the first back plate (3), the fin (5) is clamped between the limit grooves (7) and the outer end is located below the hook plate (8), the inner end of the fin (5) is fixed to the first back plate (3) via a pressing plate (9), the second back plate (4) covers the end of the fin (5) and a hole is opened in the middle of the second back plate (4).

2. A centrifugal smoke exhaust fan according to claim 1, characterized in that: Cover plates (10) are provided at both ends of the volute (1), a motor for driving the rotating shaft (2) is fixed outside the cover plate (10) on one side, and an opening is provided in the middle of the cover plate (10) on the other side.

3. A centrifugal smoke exhaust fan according to claim 1, characterized in that: The rotating shaft (2) is provided with a key strip, and the center of the first back plate (3) is provided with a connecting hole (11) that matches the rotating shaft (2).

4. The centrifugal smoke exhaust fan according to claim 1, characterized in that: A connecting plate (12) extends from the end of the fin (5), and the connecting plate (12) cooperates with the hook plate (8) and the pressure plate (9) to complete a fixed connection with the first back plate (3).

5. The centrifugal smoke exhaust fan according to claim 1, characterized in that: A plurality of connection columns (13) are provided on the inner side of the first back plate (3), and the pressure plate (9) is fixed on the connection columns (13).

6. The centrifugal smoke exhaust fan according to claim 1, characterized in that: A plurality of positioning blocks (14) corresponding to the fins (5) are provided on the inner side of the second back plate (4), positioning grooves (15) are provided between adjacent positioning blocks (14), and the fins (5) are inserted into the positioning grooves (15).

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