Fan structure

Abstract

The application relates to the field of ventilation equipment, in particular to a fan structure which comprises a wind supply assembly, a wind guide assembly and a mounting plate connected to the surface of a combustion furnace, the wind supply assembly and the wind guide assembly are connected to the plate surface of the mounting plate at intervals, the wind supply assembly can drive air to enter the inner cavity of the combustion furnace, and the wind guide assembly can drive high-temperature air in the combustion furnace to enter a drying chamber. In the application, the wind guide assembly, the wind supply assembly and the mounting plate are arranged, the wind guide assembly and the wind supply assembly on the mounting plate can be simultaneously overhauled by only dismounting the mounting plate from the combustion furnace, the overhauling period of the combustion furnace is shortened, and the convenience of using the fan is improved.

Description

Technical Field

[0001] This application relates to the field of ventilation equipment, and more particularly to a fan structure. Background Technology

[0002] A fan is a mechanical device that converts mechanical energy into gas flow energy. It mainly uses a rotating impeller to do work on the gas, giving the gas kinetic and pressure energy, thereby realizing the transportation, pressurization, or ventilation of the gas.

[0003] Combustion furnaces are typically equipped with combustion fans and induced draft fans. The combustion fans provide the necessary air for fuel combustion in the furnace, while the induced draft fans deliver the high-temperature air from the furnace into the drying chamber or baking room. However, when maintenance is required on the combustion fans and induced draft fans, staff need to inspect the fans in both locations separately, which prolongs the maintenance cycle of the combustion furnace and increases the inconvenience of using the fans. Utility Model Content

[0004] To improve the ease of use of the fan, this application provides a fan structure.

[0005] This application provides a wind turbine structure, which adopts the following technical solution: A fan structure includes an air supply component, an air exhaust component, and a mounting plate connected to the surface of a combustion furnace. The air supply component and the air exhaust component are connected at intervals on the surface of the mounting plate. The air supply component can drive air into the inner cavity of the combustion furnace, and the air exhaust component can drive the high-temperature air in the combustion furnace into the drying chamber.

[0006] By adopting the above technical solution, the mounting plate is installed on the surface of the combustion furnace, and the air supply component and the induced draft component are connected to the mounting plate at intervals. The air supply component drives air into the inner cavity of the combustion furnace, and the induced draft component drives the high-temperature air in the combustion furnace into the drying chamber or baking chamber. When it is necessary to repair the air supply component and the induced draft component, it is only necessary to remove the mounting plate from the combustion furnace, and the induced draft component and the air supply component on the mounting plate can be repaired at the same time, which shortens the maintenance cycle of the combustion furnace and improves the ease of use of the fan.

[0007] Optionally, the induced draft assembly includes an induced draft hood and an induced draft impeller. The induced draft hood is connected to the plate surface of the mounting plate facing the inner cavity of the combustion furnace. The induced draft hood has an induced draft chamber for the induced draft impeller to rotate. An air inlet chamber and an air outlet chamber are spaced apart on the surface of the induced draft hood. The air inlet chamber connects the induced draft chamber and the inner cavity of the combustion furnace, and the air outlet chamber connects the induced draft chamber and the drying chamber. When the induced draft impeller rotates, it pushes the high-temperature air in the combustion furnace through the air inlet chamber into the induced draft chamber and from the air outlet chamber into the drying chamber.

[0008] By adopting the above technical solution, when the induced draft impeller rotates, it pushes the high-temperature air in the combustion furnace through the air inlet chamber into the induced draft chamber and from the air outlet chamber into the drying chamber, thereby achieving stable delivery of high-temperature air in the combustion furnace.

[0009] Optionally, the induced draft assembly further includes an induced draft seat and a bearing seat. The induced draft seat is connected to the mounting plate facing away from the combustion furnace surface. The bearing seat is connected to the surface of the induced draft seat facing the induced draft impeller. The axis of the bearing seat coincides with the rotation axis of the induced draft impeller. The end of the rotation axis of the induced draft impeller passes through the mounting plate surface and is rotatably connected to the inner wall of the bearing seat.

[0010] By adopting the above technical solution, the induced draft seat is connected to the mounting plate surface, the end of the induced draft impeller rotating shaft passes through the mounting plate surface and is rotatably connected to the inner wall of the bearing seat, and the bearing seat provides support for the induced draft impeller rotating shaft, thereby improving the stability of the induced draft impeller rotating on the inner wall of the induced draft cavity.

[0011] Optionally, the air intake assembly further includes an air intake motor, at least two synchronous pulleys, and a synchronous belt used in conjunction with the synchronous pulleys. The air intake motor is connected to the surface of the air intake seat. The motor axis of the air intake motor and the rotation axis of the air intake impeller are parallel to each other. The end of the rotation axis of the air intake impeller protrudes from the surface of the bearing seat and is coaxially fixed to one of the synchronous pulleys. The other synchronous pulley is coaxially fixed to the motor shaft of the air intake motor. The synchronous belt tensions and connects the two synchronous pulleys.

[0012] By adopting the above technical solution, the synchronous belt tensions and connects the two synchronous pulleys. When the induced draft motor is running, the synchronous belt and synchronous pulleys drive the induced draft impeller in the induced draft cavity to rotate, thereby ensuring the stability of the induced draft impeller rotating on the inner wall of the induced draft cavity.

[0013] Optionally, the air supply assembly includes an air supply duct, an air supply impeller, and an air supply hood. The air supply hood is connected to the mounting plate facing away from the combustion furnace surface. The air supply hood has an air supply chamber for the air supply impeller to rotate. The mounting plate has a connecting cavity on its surface facing the air supply chamber, and the connecting cavity extends through both sides of the mounting plate in the thickness direction. The end of the air supply duct is connected to the mounting plate on its surface facing the combustion furnace. The connecting cavity connects the inner cavity of the air supply duct and the air supply chamber. The surface of the air supply hood has a ventilation cavity, and the ventilation cavity connects to the air supply chamber. When the air supply impeller rotates, outside air enters the air supply chamber through the ventilation cavity and then sequentially enters the combustion furnace inner cavity through the connecting cavity and the inner cavity of the air supply duct.

[0014] By adopting the above technical solution, when the air supply impeller rotates on the inner wall of the air supply chamber, it pushes the outside air through the ventilation chamber into the air supply chamber and then through the connecting chamber and the inner cavity of the air supply pipe in sequence into the inner cavity of the combustion furnace, thereby achieving a stable supply of air to the combustion furnace.

[0015] Optionally, the air supply duct has a clearance space to accommodate the end of the air hood, and the inner wall of the clearance space surrounds the outer circumference of the air hood.

[0016] By adopting the above technical solution, the end of the induced draft hood is provided with a clearance space and connected to the mounting plate. When the induced draft impeller rotates, it drives the high-temperature air in the combustion furnace to enter the induced draft chamber through the air inlet chamber. The high-temperature air in the induced draft chamber comes into full contact with the air in the air supply pipe through the induced draft hood and exchanges heat, thereby preheating the air in the air supply pipe and enabling the fuel in the combustion furnace to burn completely.

[0017] Optionally, the air supply assembly further includes an air supply base and an air supply motor. The air supply base is connected to the surface of the air supply hood, and the air supply motor is connected to the surface of the air supply base. The motor axis of the air supply motor and the rotation axis of the air supply impeller coincide. The end of the rotation axis of the air supply impeller passes through the outer wall of the air supply hood and is coaxially connected to the rotation axis of the air supply motor.

[0018] By adopting the above technical solution, the end of the air supply impeller rotating shaft passes through the outer wall of the air supply cover and is coaxially fixed on the air supply motor rotating shaft. The air supply seat provides support for the air supply motor, thereby improving the stability of the air supply impeller rotation.

[0019] Optionally, the air intake seat is connected to a cover plate, which covers the timing belt and two timing pulleys.

[0020] By adopting the above technical solution, the cover plate covers the synchronous belt and the two synchronous pulleys, making the synchronous belt and the two synchronous pulleys less susceptible to damage from external impacts, thereby ensuring the stability of the operation of the induced draft assembly.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The setup of the induced draft assembly, air supply assembly, and mounting plate allows for simultaneous maintenance of both the induced draft assembly and air supply assembly on the mounting plate simply by removing the mounting plate from the combustion furnace. This shortens the maintenance cycle of the combustion furnace and improves the ease of use of the fan. 2. The installation of the induced draft hood and induced draft impeller drives the high-temperature air in the combustion furnace through the air inlet chamber into the induced draft chamber and from the air outlet chamber into the drying chamber, thereby achieving stable delivery of high-temperature air in the combustion furnace; 3. The installation of the induced draft fan seat and bearing seat: The bearing seat provides support for the rotating shaft of the induced draft fan impeller, thereby improving the stability of the induced draft fan impeller rotating on the inner wall of the induced draft fan cavity. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0023] Figure 2 This is a cross-sectional view of an embodiment of this application, mainly showing the air intake component.

[0024] Figure 3 This is a schematic diagram of the overall structure in the embodiments of this application, mainly showing the threaded groove.

[0025] Figure 4 This is a cross-sectional view of an embodiment of this application, mainly showing the connecting cavity.

[0026] Explanation of reference numerals in the attached drawings: 1. Air supply assembly; 11. Air supply duct; 111. Annular part; 1111. Clearance space; 112. Connecting part; 12. Air supply impeller; 13. Air supply hood; 131. Air supply chamber; 132. Ventilation chamber; 14. Air supply seat; 15. Air supply motor; 2. Exhaust assembly; 21. Exhaust hood; 211. Exhaust chamber; 212. Air inlet chamber; 213. Air outlet chamber; 22. Exhaust impeller; 23. Exhaust seat; 231. Threaded groove; 24. Bearing seat; 25. Exhaust motor; 26. Synchronous pulley; 27. Synchronous belt; 3. Mounting plate; 31. Threaded hole; 32. Connecting cavity; 4. Cover plate. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] This application discloses a fan structure. (Refer to...) Figure 1 A fan structure includes an air supply component 1, an air intake component 2, and a mounting plate 3. The mounting plate 3 has multiple threaded holes 31 spaced apart circumferentially on its surface for bolts to pass through. The axis of the threaded holes 31 is parallel to the thickness direction of the mounting plate 3. The threaded holes 31 pass through both sides of the mounting plate 3 along their own axis in the thickness direction. The bolt ends pass through the threaded holes 31 and are threaded and tightened to the surface of the combustion furnace to form a detachable connection. One side of the mounting plate 3 faces the inner cavity of the combustion furnace, and the other side of the mounting plate 3 faces the outside air.

[0029] Reference Figure 2 and Figure 3Air supply assembly 1 and air intake assembly 2 are installed alternately on the surface of mounting plate 3. Air intake assembly 2 can drive high-temperature air from the combustion furnace into the drying chamber, while air supply assembly 1 can drive outside air into the combustion furnace cavity. Air intake assembly 2 includes an air intake hood 21, an air intake impeller 22, an air intake seat 23, a bearing seat 24, an air intake motor 25, at least two synchronous pulleys 26, and a synchronous belt 27 used in conjunction with the synchronous pulleys 26. Air intake hood 21 is fixed to the surface of mounting plate 3 facing the combustion furnace cavity by bolts. Air intake hood 21 has an air supply impeller The rotating air chamber 211 of the air induced impeller 22 has its rotation axis parallel to the thickness direction of the mounting plate 3. The surface of the air induced hood 21 is provided with an air inlet chamber 212 and an air outlet chamber 213 spaced apart. The air inlet chamber 212 connects the air induced hood 211 and the inner cavity of the combustion furnace, and the air outlet chamber 213 connects the air induced hood 211 and the drying chamber. When the air induced impeller 22 rotates, it pushes the high-temperature air in the combustion furnace through the air inlet chamber 212 into the air induced hood 211 and into the drying chamber through the air outlet chamber 213, thereby achieving stable discharge of the high-temperature air in the combustion furnace.

[0030] Reference Figure 2 and Figure 3 The induced draft seat 23 is fixed to the surface of the mounting plate 3 away from the combustion furnace by bolts. The surface of the induced draft seat 23 facing the combustion furnace has multiple threaded grooves 231 for bolts to pass through. The ends of the bolts can pass through the threaded grooves 231 and be threaded and fixed to the surface of the combustion furnace, so as to realize the setting of multiple force application points of the induced draft seat 23, ensuring that the induced draft seat 23 is not easy to shift, thereby improving the stability of the induced draft seat 23 fixed on the surface of the mounting plate 3.

[0031] Reference Figure 2 and Figure 3 The end of the rotating shaft of the induced draft impeller 22 passes through the outer wall of the induced draft shroud 21 and the surface of the mounting plate 3 in sequence and faces the surface of the induced draft seat 23. The bearing seat 24 is fixed to the surface of the induced draft seat 23 facing the induced draft impeller 22 by bolts. The axis of the bearing seat 24 coincides with the axis of rotation of the induced draft impeller 22. The end of the induced draft impeller 22 that protrudes from the mounting plate 3 passes through the inner cavity of the bearing seat 24 and protrudes from the surface of the bearing seat 24. The inner wall of the bearing seat 24 abuts against the outer circumferential surface of the rotating shaft of the induced draft impeller 22 to form support, so that the induced draft impeller 22 is not easy to deflect when rotating on the inner wall of the induced draft cavity 211, thereby improving the stability of the rotation of the induced draft impeller 22.

[0032] Reference Figure 2 and Figure 3The induced draft motor 25 is fixed to the surface of the induced draft seat 23 by bolts. The motor axis of the induced draft motor 25 and the rotation axis of the induced draft impeller 22 are parallel to each other. One synchronous pulley 26 is coaxially fixed to the end of the induced draft impeller 22 that protrudes from the bearing seat 24. The other synchronous pulley 26 is coaxially fixed to the rotation axis of the induced draft motor 25. The synchronous belt 27 tensions and connects the two synchronous pulleys 26. When the induced draft motor 25 is running, the synchronous belt 27 tensions and connects the two synchronous pulleys 26, driving the induced draft impeller 22 to rotate on the inner wall of the induced draft chamber 211, thereby achieving the stability of the rotation of the induced draft impeller 22 on the inner wall of the induced draft chamber 211.

[0033] Reference Figure 2 and Figure 3 The surface of the induced draft seat 23 is fixed with a cover plate 4 by bolts. The inner cavity of the cover plate 4 shields the synchronous belt 27 and the two synchronous pulleys 26, making the synchronous belt 27 and the two synchronous pulleys 26 less susceptible to damage from external impacts, thereby ensuring the stability of the fan operation.

[0034] Reference Figure 1 and Figure 4 The air supply assembly 1 includes an air supply duct 11, an air supply impeller 12, an air supply hood 13, an air supply base 14, and an air supply motor 15. The air supply hood 13 is fixed to the surface of the mounting plate 3 away from the combustion furnace by bolts. The air supply hood 13 has an air supply chamber 131 for the air supply impeller 12 to rotate. The rotation axis of the air supply impeller 12 is parallel to the length direction of the mounting plate 3. A ventilation chamber 132 is opened on the surface of the air supply hood 13, which connects the outside air and the air supply chamber 131. A connecting cavity 32 is opened on the plate surface of the mounting plate 3 facing the air supply chamber 131. The connecting cavity 32 passes through both sides of the mounting plate 3 along the thickness direction of the mounting plate 3 and connects to the air supply chamber 131.

[0035] Reference Figure 1 and Figure 4 The air supply duct 11 includes an annular portion 111 and a connecting portion 112. In this embodiment, the annular portion 111 has an annular structure and the connecting portion 112 has a straight structure. The annular portion 111 is fixed to the surface of the mounting plate 3 facing the combustion furnace by bolts. The connecting cavity 32 connects the inner cavity of the annular portion 111 and the air supply cavity 131. One end of the connecting portion 112 is connected to the surface of the annular portion 111, and the other end of the connecting portion 112 faces the combustion end of the combustion furnace. The inner cavity of the connecting portion 112 connects to the inner cavity of the annular portion 111. The annular portion 111 has a clearance space 1111 to accommodate the end of the induced draft hood 21. The inner wall of the clearance space 1111 surrounds the outer circumference of the induced draft hood 21. The high-temperature air in the induced draft cavity 211 fully contacts and exchanges heat with the air in the annular portion 111 through the induced draft hood 21 and the annular portion 111, thereby achieving preheating of the air in the annular portion 111.

[0036] Reference Figure 1 and Figure 4The air supply seat 14 is fixed to the surface of the air supply hood 13 by bolts. The end of the rotating shaft of the air supply impeller 12 passes through the outer wall of the air supply hood 13 and faces the surface of the air supply seat 14. The air supply motor 15 is fixed to the surface of the air supply seat 14 facing the air supply impeller 12 by bolts. The motor axis of the air supply motor 15 coincides with the rotating axis of the air supply impeller 12. The end of the rotating shaft of the air supply impeller 12 is coaxially fixed on the motor shaft of the air supply motor 15. When the air supply motor 15 is running, it drives the air supply impeller 12 to rotate on the inner wall of the air supply chamber 131, pushing the outside air through the ventilation chamber 132 into the air supply chamber 131 and then through the connecting chamber 32, the inner cavity of the annular part 111 and the inner cavity of the connecting part 112 in sequence and into the inner cavity of the combustion furnace, thereby realizing a stable supply of air to the combustion furnace.

[0037] The implementation principle of a fan structure in this application embodiment is as follows: the mounting plate 3 is installed on the surface of the combustion furnace by bolts. The air supply component 1 and the induced draft component 2 are connected to the mounting plate 3 at intervals. The air supply component 1 drives air into the inner cavity of the combustion furnace, and the induced draft component 2 drives the high-temperature air in the combustion furnace into the drying chamber or baking chamber. When it is necessary to inspect the air supply component 1 and the induced draft component 2, simply unscrew the bolts to disassemble the mounting plate 3 from the combustion furnace. The staff can then inspect the induced draft component 2 and the air supply component 1 on the mounting plate 3 at the same time, shortening the maintenance cycle of the combustion furnace and thus improving the ease of use of the fan.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fan structure, characterized in that: It includes an air supply assembly (1), an air intake assembly (2), and a mounting plate (3) connected to the surface of the combustion furnace. The air supply assembly (1) and the air intake assembly (2) are connected at intervals on the surface of the mounting plate (3). The air supply assembly (1) can drive air into the inner cavity of the combustion furnace, and the air intake assembly (2) can drive the high-temperature air in the combustion furnace into the drying chamber.

2. The fan structure according to claim 1, characterized in that: The induced draft assembly (2) includes an induced draft hood (21) and an induced draft impeller (22). The induced draft hood (21) is connected to the plate surface of the mounting plate (3) facing the inner cavity of the combustion furnace. The induced draft hood (21) has an induced draft chamber (211) for the induced draft impeller (22) to rotate. An air inlet chamber (212) and an air outlet chamber (213) are spaced apart on the surface of the induced draft hood (211). The air inlet chamber (212) connects the induced draft chamber (211) and the inner cavity of the combustion furnace. The air outlet chamber (213) connects the induced draft chamber (211) and the drying chamber. When the induced draft impeller (22) rotates, it pushes the high-temperature air in the combustion furnace through the air inlet chamber (212) into the induced draft chamber (211) and from the air outlet chamber (213) into the drying chamber.

3. The fan structure according to claim 2, characterized in that: The induced draft assembly (2) also includes an induced draft seat (23) and a bearing seat (24). The induced draft seat (23) is connected to the mounting plate (3) facing away from the surface of the combustion furnace. The bearing seat (24) is connected to the surface of the induced draft seat (23) facing the induced draft impeller (22). The axis of the bearing seat (24) coincides with the rotation axis of the induced draft impeller (22). The end of the rotation shaft of the induced draft impeller (22) passes through the surface of the mounting plate (3) and is rotatably connected to the inner wall of the bearing seat (24).

4. A fan structure according to claim 3, characterized in that: The air intake assembly (2) also includes an air intake motor (25), at least two synchronous pulleys (26), and a synchronous belt (27) used in conjunction with the synchronous pulleys (26). The air intake motor (25) is connected to the surface of the air intake seat (23). The motor axis of the air intake motor (25) and the rotation axis of the air intake impeller (22) are parallel to each other. The end of the rotation shaft of the air intake impeller (22) protrudes from the surface of the bearing seat (24) and is coaxially fixed on one of the synchronous pulleys (26). The other synchronous pulley (26) is coaxially fixed on the motor shaft of the air intake motor (25). The synchronous belt (27) tensions and connects the two synchronous pulleys (26).

5. A fan structure according to claim 2, characterized in that: The air supply assembly (1) includes an air supply duct (11), an air supply impeller (12), and an air supply hood (13). The air supply hood (13) is connected to the mounting plate (3) facing away from the surface of the combustion furnace. The air supply hood (13) has an air supply chamber (131) for the air supply impeller (12) to rotate. The mounting plate (3) has a connecting cavity (32) on its surface facing the air supply chamber (131). The connecting cavity (32) penetrates both sides of the mounting plate (3) in the thickness direction. The end of the air supply duct (11) is connected to... The connecting cavity (32) is connected to the surface of the mounting plate (3) facing the combustion furnace. The connecting cavity (32) connects the inner cavity of the air supply pipe (11) and the air supply cavity (131). The surface of the air supply hood (13) is provided with a ventilation cavity (132). The ventilation cavity (132) connects to the air supply cavity (131). When the air supply impeller (12) rotates, the outside air enters the air supply cavity (131) through the ventilation cavity (132) and then enters the inner cavity of the combustion furnace through the connecting cavity (32) and the inner cavity of the air supply pipe (11).

6. A fan structure according to claim 5, characterized in that: The air supply duct (11) has a clearance space (1111) on its surface to accommodate the end of the air hood (21), and the inner wall of the clearance space (1111) surrounds the outer circumference of the air hood (21).

7. A fan structure according to claim 5, characterized in that: The air supply assembly (1) also includes an air supply base (14) and an air supply motor (15). The air supply base (14) is connected to the surface of the air supply cover (13), and the air supply motor (15) is connected to the surface of the air supply base (14). The motor axis of the air supply motor (15) coincides with the rotation axis of the air supply impeller (12). The end of the rotation shaft of the air supply impeller (12) passes through the outer wall of the air supply cover (13) and is coaxially connected to the rotation shaft of the air supply motor (15).

8. A fan structure according to claim 4, characterized in that: The air intake seat (23) is connected to a cover plate (4), which covers the synchronous belt (27) and two synchronous pulleys (26).

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