Fan

Abstract

The utility model provides a fan which comprises a machine shell, a volute, a motor and a wind wheel, the volute is fixed inside the machine shell, an air inlet and an air outlet are arranged on the machine shell, an air inlet end of the volute is connected with the air inlet, an air outlet end of the volute is connected with the air outlet, the wind wheel is coaxially fixed on an output shaft of the motor, the fan further comprises a cover plate, and an access hole is arranged on the machine shell. The cover plate is connected to the outer side of the machine shell and used for sealing the access hole. The motor is fixed to the inner wall of the cover plate. After the access hole is sealed by the cover plate, the wind wheel is inserted into the volute along with the cover plate, and when the access hole is not sealed by the cover plate, the wind wheel is moved out of the volute along with the cover plate; according to the utility model, oil stains adhered to the inner walls of the wind wheel and the volute can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of air suction devices, in particular to a fan. Background Art

[0002] A fan is a device for extracting air and oil fumes. When the fans currently on the market are used to extract oil fumes, a lot of oil will adhere to the wind wheel in the fan and the inner wall of the fan after the fan has been used for a period of time, so the oil adhered to the wind wheel and the inner wall of the fan needs to be cleaned regularly; however, in the fans currently on the market, since there is no inspection port on the fan casing, it is inconvenient to clean the oil on the wind wheel and the inner wall of the fan. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fan which can facilitate the cleaning of oil stains adhered to the wind wheel and the inner wall of the volute.

[0004] The utility model provides a fan, comprising a casing, a volute, a motor and a wind wheel, the volute is fixed inside the casing, an air inlet and an air outlet are arranged on the casing, the air inlet end of the volute is connected with the air inlet, the air outlet end of the volute is connected with the air outlet, the wind wheel is coaxially fixed on the output shaft of the motor, the fan also comprises a cover plate, an inspection port is arranged on the casing, the cover plate is connected to the outside of the casing and is used for closing the inspection port, and the motor is fixed on the inner wall of the cover plate; when the cover plate closes the inspection port, the wind wheel is inserted into the volute with the cover plate, and when the cover plate releases the closing state of the inspection port, the wind wheel is removed from the volute with the cover plate.

[0005] After adopting the above structure, when the utility model needs to clean the oil stains adhering to the wind wheel and the inner wall of the volute, the cover plate can release the sealing state of the inspection port. At this time, the wind wheel can be removed from the volute along with the cover plate, so that the oil stains on the wind wheel can be conveniently cleaned, and the oil stains adhering to the inner wall of the volute can be conveniently cleaned through the inspection port.

[0006] In a possible implementation, a protective net is provided at the air outlet, and the outer edge of the protective net is fixed to the casing; by providing the protective net at the air outlet, human body can be prevented from contacting the rotating wind wheel, thereby avoiding personal injury and eliminating safety hazards.

[0007] In a possible embodiment, one of the two opposite sides of the cover in the horizontal direction is rotatably connected to the outer side of the casing, and the other of the two opposite sides of the cover in the horizontal direction is locked with the outer side of the casing; after adopting this structure, when the other of the two opposite sides of the cover in the horizontal direction is unlocked from the outer side of the casing, the cover can be rotated open relative to the casing, that is, the wind wheel can be removed from the volute with the cover, and in the above process, there is no need to remove the cover from the casing, thereby facilitating the maintenance of the motor and the cleaning of the wind wheel; after the other of the two opposite sides of the cover in the horizontal direction is locked with the outer side of the casing, the cover can close the inspection port, and at this time the wind wheel can be inserted into the volute with the cover.

[0008] In a possible embodiment, one of the two opposite side edges in the horizontal direction of the cover plate is rotatably connected to the outer side of the casing through two hinges symmetrically arranged in the upper and lower directions; by adopting this structure, one of the two opposite side edges in the horizontal direction of the cover plate can be conveniently rotatably connected to the outer side of the casing through a hinge.

[0009] In a possible embodiment, the other of the two opposite sides of the cover in the horizontal direction is locked with the outer side of the casing by means of hand bolts; by adopting this structure, after the cover is closed on the casing and the inspection port is closed, the other of the two opposite sides of the cover in the horizontal direction can be conveniently fastened with the casing by means of hand bolts.

[0010] In a possible embodiment, a sealing structure is provided between the edge of the inspection port and the cover plate; by providing a sealing structure between the edge of the inspection port and the cover plate, when the fan is working, air leakage between the cover plate and the inspection port can be avoided, thereby enabling the wind wheel to reliably draw air from the air inlet.

[0011] In a possible embodiment, the sealing structure includes a sealing strip, and a bent edge folded outward is provided at the edge of the inspection port, the sealing strip is wrapped around the bent edge, and the sealing strip is abutted against the inner wall of the cover plate; by adopting this structure, after the cover plate is closed on the casing, the sealing strip can abut against the inner wall of the cover plate, that is, the sealing strip can reliably seal the gap between the edge of the inspection port and the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a first three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 This is a second three-dimensional structural schematic diagram of the utility model;

[0014] Figure 3It is a schematic diagram of the three-dimensional structure when the cover plate in the utility model is rotated and opened relative to the housing;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure after the motor and cover are assembled. DETAILED DESCRIPTION

[0016] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0017] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0018] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0019] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] See also Figure 1-4 As shown, an embodiment of the present application discloses a fan, comprising a casing 1, a volute 2, a motor 3 and a wind wheel 4, the volute 2 is fixed inside the casing 1, an air inlet 11 and an air outlet 12 are provided on the casing 1, the air inlet end of the volute 2 is connected to the air inlet 11, the air outlet end of the volute 2 is connected to the air outlet 12, the wind wheel 4 is coaxially fixed on the output shaft of the motor 3, the fan also includes a cover plate 5, an inspection port 13 is provided on the casing 1, the cover plate 5 is connected to the outside of the casing 1 and is used to close the inspection port 13, and the motor 3 is fixed on the inner wall of the cover plate 5; when the cover plate 5 closes the inspection port 13, the wind wheel 4 is inserted into the volute 2 along with the cover plate 5, and when the cover plate 5 releases the closing state of the inspection port 13, the wind wheel 4 is removed from the volute 2 along with the cover plate 5.

[0021] A protective net 6 is provided at the air outlet 12, and the outer edge of the protective net 6 is fixed to the casing 1; by providing the protective net at the air outlet, human body can be prevented from contacting the rotating wind wheel, thereby avoiding personal injury and eliminating safety hazards.

[0022] One of the two opposite sides in the horizontal direction of the cover plate 5 is rotatably connected to the outer side of the casing 1, and the other of the two opposite sides in the horizontal direction of the cover plate 5 is locked with the outer side of the casing 1; after adopting this structure, when the other of the two opposite sides in the horizontal direction of the cover plate is unlocked from the outer side of the casing, the cover plate can be rotated and opened relative to the casing, that is, the wind wheel can be removed from the volute with the cover plate, and in the above process, there is no need to remove the cover plate from the casing, thereby facilitating the maintenance of the motor and the cleaning of the wind wheel; after the other of the two opposite sides in the horizontal direction of the cover plate is locked with the outer side of the casing, the cover plate can close the inspection port, and at this time the wind wheel can be inserted into the volute with the cover plate.

[0023] One of the two opposite sides of the cover plate 5 in the horizontal direction is rotatably connected to the outer side of the casing 1 through two hinges 7 symmetrically arranged in the upper and lower directions; by adopting this structure, one of the two opposite sides of the cover plate in the horizontal direction can be conveniently rotatably connected to the outer side of the casing through the hinge.

[0024] The other of the two opposite sides in the horizontal direction of the cover plate 5 is locked with the outer side of the casing 1 by means of hand-tightening bolts 8; by adopting this structure, after the cover plate is closed on the casing and the inspection port is closed, the other of the two opposite sides in the horizontal direction of the cover plate can be conveniently fastened with the casing by means of hand-tightening bolts.

[0025] A sealing structure is provided between the edge of the inspection port 13 and the cover plate 5; by providing a sealing structure between the edge of the inspection port and the cover plate, air leakage between the cover plate and the inspection port can be avoided when the fan is working, so that the wind wheel can reliably draw air from the air inlet.

[0026] The sealing structure includes a sealing strip 9. A bent edge 131 folded outward is provided at the edge of the inspection port 13. The sealing strip 9 is wrapped around the bent edge 131, and the sealing strip 9 is abutted against the inner wall of the cover plate 5. By adopting this structure, after the cover plate is closed on the casing, the sealing strip can abut against the inner wall of the cover plate, that is, the sealing strip can reliably seal the gap between the edge of the inspection port and the cover plate.

[0027] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A fan, comprising a casing (1), a volute (2), a motor (3) and a wind wheel (4), wherein the volute (2) is fixed inside the casing (1), an air inlet (11) and an air outlet (12) are provided on the casing (1), an air inlet end of the volute (2) is connected to the air inlet (11), an air outlet end of the volute (2) is connected to the air outlet (12), and the wind wheel (4) is coaxially fixed to an output shaft of the motor (3), characterized in that: The fan further comprises a cover plate (5); an inspection opening (13) is provided on the casing (1); the cover plate (5) is connected to the outer side of the casing (1) and is used to close the inspection opening (13); the motor (3) is fixed on the inner wall of the cover plate (5); when the cover plate (5) closes the inspection opening (13), the wind wheel (4) is inserted into the volute (2) along with the cover plate (5); when the cover plate (5) releases the closed state of the inspection opening (13), the wind wheel (4) is removed from the volute (2) along with the cover plate (5).

2. The fan according to claim 1, characterized in that: A protective net (6) is provided at the air outlet (12), and the outer edge of the protective net (6) is fixed to the casing (1).

3. The fan according to claim 1 or 2, characterized in that: One of the two opposite side edges of the cover plate (5) in the horizontal direction is rotatably connected to the outer side of the housing (1), and the other of the two opposite side edges of the cover plate (5) in the horizontal direction is locked with the outer side of the housing (1).

4. The fan according to claim 3, characterized in that: One of the two opposite side edges of the cover plate (5) in the horizontal direction is rotatably connected to the outer side of the housing (1) via two hinges (7) symmetrically arranged up and down.

5. The fan according to claim 3, characterized in that: The other of the two opposite side edges of the cover plate (5) in the horizontal direction is locked with the outer side of the casing (1) by means of a hand-tightened bolt (8).

6. The fan according to claim 1, 2, 4 or 5, characterized in that: A sealing structure is provided between the edge of the inspection opening (13) and the cover plate (5).

7. The fan according to claim 6, characterized in that: The sealing structure comprises a sealing strip (9); a bent edge (131) folded outward is provided at the edge of the inspection opening (13); the sealing strip (9) is wrapped around the bent edge (131); and the sealing strip (9) abuts against the inner side wall of the cover plate (5).

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