Outer rotor backward-tilting type double-air-inlet centrifugal fan

Abstract

The utility model discloses an outer rotor retroverted type double-air-inlet centrifugal fan which comprises an impeller assembly, the impeller assembly comprises an impeller middle disc, the impeller middle disc is round, an outer rotor motor installation groove is formed in the impeller middle disc, and the outer rotor motor installation groove is round; the outer rotor motor assembly comprises an outer rotor motor, and the impeller middle disc and the outer rotor motor are fixedly arranged through the outer rotor motor mounting groove; the volute assembly comprises a shell, and the impeller middle disc is arranged in the shell; the impeller assembly is used for generating wind power during rotation, the impeller middle disc is used for installing and fixing parts needed by fanning, the outer rotor motor is used for driving the impeller assembly so as to generate wind power, the volute is used for installing the outer rotor motor assembly and the impeller assembly, and the outer rotor motor installation groove is used for installing the outer rotor motor. Therefore, the impeller assembly and the outer rotor motor are fixed, a bearing is not needed, the production cost is reduced, meanwhile, the bearing does not need to be maintained subsequently, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to an outer rotor backward inclined double air inlet centrifugal fan. Background Art

[0002] Currently, backward-inclined, dual-inlet centrifugal fans on the market all utilize a pulley drive system. Typically, the main unit and outer rotor motor are mounted separately on a chassis, with pulleys installed to transmit power via belts. This installation method requires a large footprint and is not suitable for smaller installations. Bearing blocks are also required at both ends of the main shaft, requiring regular maintenance and resulting in high maintenance costs. Utility Model Content

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide an outer rotor backward inclined double air inlet centrifugal fan, by using the outer rotor motor mounting groove to install the outer rotor motor, thereby fixing the impeller assembly and the outer rotor motor, without the need for bearings, thereby reducing production costs. At the same time, there is no need to maintain the bearings subsequently, thereby reducing maintenance costs.

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention is: an outer rotor backward inclined double air inlet centrifugal fan, comprising:

[0005] An impeller assembly, the impeller assembly comprising an impeller mid-plate, the impeller mid-plate being circular, the impeller mid-plate being provided with an outer rotor motor mounting slot, the outer rotor motor mounting slot being circular;

[0006] An outer rotor motor assembly, the outer rotor motor assembly comprising an outer rotor motor, the impeller mid-plate being fixedly arranged with the outer rotor motor via the outer rotor motor mounting slot;

[0007] The volute assembly comprises a shell, and the impeller center disc is arranged in the shell.

[0008] In this technical solution, the impeller assembly is used to generate wind when rotating, the impeller mid-plate is used to install and fix the components required for fanning, the outer rotor motor is used to drive the impeller assembly to generate wind, the volute is used to install the outer rotor motor assembly and the impeller assembly, and the outer rotor motor mounting groove is used to install the outer rotor motor, thereby fixing the impeller assembly and the outer rotor motor, eliminating the need for bearings, thereby reducing production costs. At the same time, there is no need to maintain the bearings subsequently, thereby reducing maintenance costs.

[0009] In some embodiments, the impeller assembly further includes blades, wherein the blades extend along a first direction and are fixed to the impeller center disk.

[0010] In this technical solution, the blades are used to follow the movement of the outer rotor motor to generate wind power.

[0011] In some embodiments, the impeller mounting assembly further includes an impeller front disc, which is trumpet-shaped and fixed to both ends of the blade. The opening of the end of the impeller front disc connected to the blade is larger than the opening of the end of the impeller front disc away from the blade.

[0012] In this technical solution, the impeller front disc is used to introduce air into the interior of the impeller assembly, and one end of the impeller front disc is fixedly mounted to the blade, which is conducive to further fixing the blade.

[0013] In some embodiments, an air guide port is provided on the side of the shell, and the impeller front disk is connected to the air guide port.

[0014] In this technical solution, the air guide port is used to introduce external air into the interior of the housing, so that the outer rotor motor drives the blades to generate wind force.

[0015] In some embodiments, the volute assembly further includes an air collecting ring, which is trumpet-shaped, with one end of the air collecting ring connected to the air guide port and the other end of the air collecting ring connected to the impeller front disk.

[0016] In this technical solution, the wind collecting ring is used to connect the impeller front disk and the air guide port, so that all the airflow entering the shell from the air guide port enters the impeller assembly, thereby increasing the wind force of the outer rotor backward inclined double air inlet centrifugal fan.

[0017] In some embodiments, the outer rotor backward inclined double-inlet centrifugal fan further includes a support frame, wherein the support frame is fixed to both sides of the volute assembly, and the outer rotor motor assembly is fixed on the support frame.

[0018] In this technical solution, the support frame is used to support the outer rotor motor assembly, thereby ensuring the normal operation of the outer rotor motor.

[0019] In some embodiments, the outer rotor motor assembly further includes a motor shaft extending in a first direction, one end of the motor shaft being rotationally connected to the outer rotor motor, and one end of the motor shaft away from the outer rotor motor being fixed to the support frame.

[0020] In this technical solution, the motor shaft is used to connect to the outer rotor motor support frame, thereby supporting the outer rotor motor.

[0021] In some embodiments, the outer rotor motor assembly also includes a fixed shaft sleeve assembly, the fixed shaft sleeve assembly includes a fixing bolt and a fixed shaft sleeve, the fixed shaft sleeve is provided with a mounting through hole and a fixing through hole, the fixing through hole is connected to the mounting through hole, the fixing bolt is provided in the fixing through hole, and the motor shaft is fixed to the mounting through hole by the fixing bolt.

[0022] In this technical solution, the fixed sleeve is used to install the outer rotor motor on the support frame, the mounting through hole is used to install the motor shaft, and the fixing bolt fixes the motor shaft through the fixing through hole to prevent the motor shaft from rotating.

[0023] In some embodiments, a positioning groove is provided on the motor shaft, and the fixing bolt fixes the motor shaft through the positioning groove.

[0024] In this technical solution, the positioning groove is used to fix the motor shaft by using the fixing bolt to cooperate with the positioning groove to fix the motor shaft and prevent the motor shaft from moving.

[0025] In some embodiments, the outer rotor backward inclined double air inlet centrifugal fan further includes a wind tongue plate, the upper end of which is V-shaped, and the shell further includes an air outlet, and the wind tongue plate is arranged at the air outlet.

[0026] In this technical solution, the wind tongue plate is used to gather the wind from the air outlet, thereby increasing the wind force at the air outlet.

[0027] The beneficial effect of the present invention is that the outer rotor motor is installed by utilizing the outer rotor motor mounting groove, thereby fixing the impeller assembly to the outer rotor motor without using bearings, thereby reducing production costs. At the same time, there is no need to maintain the bearings later, thereby reducing maintenance costs; by utilizing the positioning groove to fix the motor shaft with the fixing bolt, the fixing bolt is used to cooperate with the positioning groove to fix the motor shaft to prevent the motor shaft from moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an overall schematic diagram of an outer rotor backward inclined double air inlet centrifugal fan according to an embodiment of the present invention;

[0029] Figure 2 This is a side view of a backward-inclined outer rotor double-inlet centrifugal fan according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of an outer rotor backward inclined double air inlet centrifugal fan impeller assembly, an outer rotor motor assembly and an air collecting ring according to an embodiment of the present invention;

[0031] In the figure: 1. Impeller assembly; 11. Impeller middle disk; 12. Blades; 13. Impeller front disk; 2. Outer rotor motor assembly; 21. Outer rotor motor; 22. Motor shaft; 23. Fixed shaft sleeve assembly; 231. Fixed bolt; 232. Fixed shaft sleeve; 2321. Mounting through hole; 3. Volute assembly; 31. Housing; 311. Air guide port; 32. Wind collecting ring; 33. Air outlet; 4. Support frame; 5. Wind tongue plate; x, first direction. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0033] Combined with attachment Figure 1 To the attached Figure 3 As shown, the present invention provides a new type of outer rotor backward inclined double air inlet centrifugal fan, comprising:

[0034] The impeller assembly 1 includes an impeller center disc 11, the impeller center disc 11 is circular, and the impeller center disc 11 is provided with a mounting groove for an outer rotor motor 21, and the mounting groove for the outer rotor motor 21 is circular;

[0035] The outer rotor motor assembly 2 includes an outer rotor motor 21, and the impeller center disc 11 is fixed to the outer rotor motor 21 through a mounting groove of the outer rotor motor 21;

[0036] The volute assembly 3 includes a shell 31 , and the impeller center disc 11 is arranged in the shell 31 .

[0037] The impeller assembly 1 is used to generate wind force when rotating, the impeller center disk 11 is used to install and fix the parts required for fanning, the outer rotor motor 21 is used to drive the impeller assembly 1 to generate wind force, the volute is used to install the outer rotor motor assembly 2 and the impeller assembly 1, and the outer rotor motor 21 mounting groove is used to install the outer rotor motor 21, so as to fix the impeller assembly 1 and the outer rotor motor 21, without the need for bearings, thereby reducing production costs. At the same time, there is no need to maintain the bearings subsequently, thereby reducing maintenance costs.

[0038] Continue to combine Figure 1 and attached Figure 3 As shown, in some embodiments, the impeller assembly 1 further includes blades 12 , which extend along a first direction x. The blades 12 are fixed to the impeller mid-disk 11 , and are configured to follow the movement of the outer rotor motor 21 to generate wind power.

[0039] Continue to combine Figure 1 and attached Figure 3As shown, in some embodiments, the impeller mounting assembly further includes an impeller front disc 13, which is trumpet-shaped and fixed to both ends of the blade 12. The opening of one end of the impeller front disc 13 connected to the blade 12 is larger than the opening of the end of the impeller front disc 13 away from the blade 12. The impeller front disc 13 is used to introduce air into the interior of the impeller assembly 1, and fixing one end of the impeller front disc 13 to the blade 12 is conducive to further fixing the blade 12.

[0040] Continue to combine Figure 1 and attached Figure 2 As shown, in some embodiments, an air duct 311 is provided on the side of the shell 31, and the impeller front disk 13 is connected to the air duct 311. The air duct 311 is used to introduce external air into the interior of the shell 31, so that the outer rotor motor 21 drives the blades 12 to generate wind force.

[0041] Continue to combine Figure 1 To the attached Figure 3 As shown, in some embodiments, the volute assembly 3 also includes an air collecting ring 32, which is trumpet-shaped. One end of the air collecting ring 32 is connected to the air guide port 311, and the other end of the air collecting ring 32 is connected to the impeller front disk 13. The air collecting ring 32 is used to connect the impeller front disk 13 and the air guide port 311, so that all the airflow entering the interior of the casing 31 from the air guide port 311 enters the interior of the impeller assembly 1, thereby increasing the wind force of the outer rotor backward-inclined double-inlet centrifugal fan.

[0042] Continue to combine Figure 1 and attached Figure 2 As shown, in some embodiments, the outer rotor backward-inclined double-inlet centrifugal fan also includes a support frame 4, which is fixed on both sides of the volute assembly 3, and the outer rotor motor assembly 2 is fixed on the support frame 4. The support frame 4 is used to support the outer rotor motor assembly 2, thereby ensuring the normal operation of the outer rotor motor 21.

[0043] Continue to combine Figure 1 and attached Figure 3 As shown, in some embodiments, the outer rotor motor assembly 2 further includes a motor shaft 22, which extends along a first direction x, one end of the motor shaft 22 is rotationally connected to the outer rotor motor 21, and one end of the motor shaft 22 away from the outer rotor motor 21 is fixed to the support frame 4, and the motor shaft 22 is used to connect to the outer rotor motor 21 support frame 4, thereby supporting the outer rotor motor 21.

[0044] Continue to combine Figure 1 To the attached Figure 3As shown, in some embodiments, the outer rotor motor assembly 2 also includes a fixed shaft sleeve assembly 23, the fixed shaft sleeve assembly 23 includes a fixing bolt 231 and a fixing shaft sleeve 232, the fixing shaft sleeve 232 is provided with a mounting through hole 2321 and a fixing through hole, the fixing through hole is connected to the mounting through hole 2321, the fixing bolt 231 is arranged in the fixing through hole, the motor shaft 22 is fixed to the mounting through hole 2321 by the fixing bolt 231, the fixing shaft sleeve 232 is used to install the outer rotor motor 21 on the support frame 4, the mounting through hole 2321 is used to install the motor shaft 22, and the fixing bolt 231 fixes the motor shaft 22 through the fixing through hole to prevent the motor shaft 22 from rotating, so that the outer rotor motor 21 can rotate around the motor shaft 22.

[0045] In some embodiments, a positioning groove is provided on the motor shaft 22, and the fixing bolt 231 fixes the motor shaft 22 through the positioning groove. The positioning groove is used to fix the motor shaft 22 by using the fixing bolt 231 to cooperate with the positioning groove to fix the motor shaft 22 and prevent the motor shaft 22 from moving.

[0046] Continue to gather Figure 1 As shown, in some embodiments, the outer rotor backward-inclined double-inlet centrifugal fan also includes a wind tongue plate 5, the upper end of the wind tongue plate 5 is V-shaped, and the shell 31 also includes an air outlet 33, and the wind tongue plate 5 is arranged at the air outlet 33. The wind tongue plate 5 is used to gather the wind from the air outlet 33, thereby increasing the wind force of the air outlet 33.

[0047] To sum up, the present invention provides an outer rotor backward inclined double air inlet centrifugal fan, which fixes the outer rotor motor by using the outer rotor motor mounting groove to install the outer rotor motor, without the need for bearings, thereby reducing production costs. At the same time, there is no need to maintain the bearings later, thereby reducing maintenance costs; by using the positioning groove to fix the motor shaft with the fixing bolt, the fixing bolt is used to cooperate with the positioning groove to fix the motor shaft to prevent the motor shaft from moving.

[0048] The above implementation methods are only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A double-inlet centrifugal fan with a backward-inclined outer rotor, characterized in that: include: An impeller assembly, the impeller assembly comprising an impeller mid-plate, the impeller mid-plate being circular, the impeller mid-plate being provided with an outer rotor motor mounting slot, the outer rotor motor mounting slot being circular; An outer rotor motor assembly, the outer rotor motor assembly comprising an outer rotor motor, the impeller mid-plate being fixedly arranged with the outer rotor motor via the outer rotor motor mounting slot; The volute assembly comprises a shell, and the impeller center disc is arranged in the shell.

2. The outer rotor backward inclined double air inlet centrifugal fan according to claim 1, characterized in that: The impeller assembly further includes blades extending along a first direction and fixed on the impeller center disk.

3. The outer rotor backward inclined double air inlet centrifugal fan according to claim 2, characterized in that: The impeller mounting assembly also includes an impeller front disc, which is trumpet-shaped and fixed to both ends of the blade. The opening of the end of the impeller front disc connected to the blade is larger than the opening of the end of the impeller front disc away from the blade.

4. The outer rotor backward inclined double air inlet centrifugal fan according to claim 3, characterized in that: An air guide port is provided on the side surface of the shell, and the impeller front disk is connected to the air guide port.

5. The outer rotor backward inclined double air inlet centrifugal fan according to claim 4, characterized in that: The volute assembly also includes an air collecting ring, which is trumpet-shaped. One end of the air collecting ring is connected to the air guide port, and the other end of the air collecting ring is connected to the impeller front disk.

6. The outer rotor backward inclined double air inlet centrifugal fan according to claim 4, characterized in that: It also includes a support frame, which is fixed on both sides of the volute assembly, and the outer rotor motor assembly is fixed on the support frame.

7. The outer rotor backward inclined double air inlet centrifugal fan according to claim 6, characterized in that: The outer rotor motor assembly further includes a motor shaft, which extends in a first direction. One end of the motor shaft is rotatably connected to the outer rotor motor, and one end of the motor shaft away from the outer rotor motor is fixed to the support frame.

8. The outer rotor backward inclined double air inlet centrifugal fan according to claim 7, characterized in that: The outer rotor motor assembly also includes a fixed shaft sleeve assembly, which includes a fixing bolt and a fixed shaft sleeve. The fixed shaft sleeve is provided with a mounting through hole and a fixing through hole. The fixing through hole is connected to the mounting through hole. The fixing bolt is provided in the fixing through hole. The motor shaft is fixed to the mounting through hole by the fixing bolt.

9. The outer rotor backward inclined double air inlet centrifugal fan according to claim 8, characterized in that: The motor shaft is provided with a positioning groove, and the fixing bolt fixes the motor shaft through the positioning groove.

10. The outer rotor backward inclined double air inlet centrifugal fan according to claim 1, characterized in that: It also includes a wind tongue plate, the upper end of which is V-shaped. The shell also includes an air outlet, and the wind tongue plate is arranged at the air outlet.

Images