Centrifugal fan with automatic heat dissipation function

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a centrifugal fan with an automatic heat dissipation function, which comprises a shell, the front end of the shell is fixedly connected with an air inlet pipe, the front end of the air inlet pipe is fixedly connected with a fixed block, the inner wall of the fixed block is rotatably connected with a rotating rod, and the rear end of the rotating rod is connected with a filter screen through a clamping assembly. A torsion spring is arranged on the outer wall of the rotating rod, a gear box is fixedly connected to the rear end of the shell, a connecting block is fixedly connected to the bottom side of the front end of the gear box, a connecting disc is fixedly connected to the front end of the connecting block, a motor is installed at the front end of the connecting disc through a fixing frame, and a second rotating shaft is fixedly connected to the driving end of the motor. According to the utility model, a series of transmission parts driven by the motor are utilized to drive the fan blades to rotate, so that external air continuously flows through the motor, an efficient air convection heat dissipation mechanism is formed, the rotating rod is rotated to drive the clamping plate to rotate, so that the clamping plate and the clamping sleeve on the filter screen are separated from a clamping state, and the filter screen can be taken down.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field especially, relates to a centrifugal fan with automatic heat dissipation function. BACKGROUND

[0002] In industrial production, ventilation, air conditioning system and many other fields, centrifugal fan plays a vital role. It can realize air delivery and circulation, provide necessary ventilation conditions for various places, and ensure air quality and normal operation environment of equipment.

[0003] Traditional centrifugal fan has obvious deficiency in heat dissipation. Usually, they mostly have no effective design for motor heat dissipation, and only rely on natural heat dissipation mode. In the long-term running process of the fan, the motor continuously runs and generates a large amount of heat. Due to the lack of active heat dissipation mechanism, the heat will gradually accumulate in the motor. With the continuous rise of motor temperature, the electrical insulation performance in the motor will gradually decrease, which not only increases the energy consumption of the motor, but also greatly increases the risk of motor failure. Once the motor fails due to overheating, the entire centrifugal fan system will be forced to stop running, which seriously affects the production progress and ventilation effect, and brings economic losses to the enterprise. In view of this technical problem, the present application provides a centrifugal fan with automatic heat dissipation function. SUMMARY

[0004] The utility model discloses a centrifugal fan with automatic heat dissipation function, which is driven by a series of transmission components of the motor to rotate the fan blade, so that the external air continuously flows through the motor, forming an efficient air convection heat dissipation mechanism. By rotating the rotating rod, the clamping plate is rotated to disengage the clamping sleeve on the filter screen, so that the filter screen can be removed.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A centrifugal fan with automatic heat dissipation function, comprising a housing, a front end of the housing is fixedly connected with an air inlet pipe, a front end of the air inlet pipe is fixedly connected with a fixed block, a rotating rod is rotatably connected to the inner wall of the fixed block, a filter screen is connected to the rear end of the rotating rod through a clamping assembly, a torsional spring is arranged on the outer wall of the rotating rod, a gear box is fixedly connected to the rear end of the housing, a connecting block is fixedly connected to the front end bottom side of the gear box, a connecting disc is fixedly connected to the front end of the connecting block, a motor is installed on the front end of the connecting disc through a fixing frame, a rotating shaft two is fixedly connected to the driving end of the motor, a rotating shaft one is connected to the outer wall of the rotating shaft two through a linkage assembly, a flat gear is fixedly connected to the front side of the outer wall of the rotating shaft one, a gear ring is meshingly connected to the top end of the flat gear, the gear ring is rotatably connected to the outer wall of the connecting disc, a fan blade is fixedly connected to the front end of the gear ring, and the fan blade is rotatably connected to the rear end of the air inlet pipe.

[0007] Further, the linkage assembly includes a rotating roller one located at the outer wall of the rotating shaft two, the rotating roller two is fixedly connected to the rear side of the outer wall of the rotating shaft one, and the outer wall of the rotating roller one is connected with the rotating roller two through a belt.

[0008] Further, the clamping assembly includes a clamping plate located at the rear end of the rotating rod, the bottom end left side of the clamping plate is connected with a clamping sleeve, and the clamping sleeve is fixedly connected to the front end of the filter screen.

[0009] Further, one end of the torsional spring is connected to the inner wall of the fixed block, and the other end of the torsional spring is connected to the front end of the clamping plate.

[0010] Further, the outer wall of the filter screen is fixedly connected with a limiting block, and the limiting block is slidingly connected to the inner wall of the air inlet pipe.

[0011] Further, the outer shell is fixedly connected with a mounting frame at the right side of the front and rear ends.

[0012] Further, the outer shell is provided with an air outlet at the top end.

[0013] The utility model has the following beneficial effects:

[0014] 1、 the utility model discloses a series of transmission components are driven to rotate the fan blade by motor, make the outside air continuously flow through motor, form efficient air convection heat dissipation mechanism, need not set up complicated heat sink additionally, the automatic heat dissipation of motor is realized by the operation of fan itself skillfully, effectively reduce the risk of damage of motor due to overheating, greatly improve the working stability and service life of fan, guarantee the performance stability of fan in the long time operation process, reduce the maintenance frequency of shutdown due to overheating.

[0015] 2、 the utility model discloses when needing to clean the filter screen, the operator only needs to rotate the rotating rod simply, and the filter screen can be easily taken down, need not help professional tool, and the operation process is simple and fast, and after cleaning, the filter screen is also equally convenient to install, and the automatic reset function of torsional spring ensures the stability after the installation of filter screen. This design facilitates daily maintenance work, can clean the impurities on the filter screen in time, guarantees the air intake quality and ventilation efficiency of fan, effectively reduces the problem of performance decline of fan due to filter screen blockage, improves the overall maintenance efficiency of fan, and reduces the maintenance cost. DRAWINGS

[0016] Figure 1 A three-dimensional view of a centrifugal fan with automatic heat dissipation function is provided for the utility model;

[0017] Figure 2 A connecting block structure diagram of a centrifugal fan with automatic heat dissipation function is provided for the utility model;

[0018] Figure 3 A flat gear structure schematic view of the centrifugal fan with automatic heat dissipation function is provided in the utility model.

[0019] Figure 4 A filter screen structure schematic view of the centrifugal fan with automatic heat dissipation function is provided in the utility model.

[0020] Figure 5 For Figure 4 The enlarged view of A.

[0021] Legend:

[0022] 1, shell; 2, mounting frame; 3, air inlet pipe; 4, fixed block; 5, rotating rod; 6, clamping plate; 7, torsional spring; 8, filter screen; 9, clamping sleeve; 10, fan blade; 11, motor; 12, rotating roller one; 13, belt; 14, rotating roller two; 15, flat gear; 16, connecting disc; 17, connecting block; 18, gear box; 19, gear ring; 20, rotating shaft one; 21, rotating shaft two; 22, limiting block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] With reference to Figures 1-3 The utility model provides an embodiment: a centrifugal fan with automatic heat dissipation function, including shell 1, shell 1 front end fixedly connected with air inlet pipe 3, air inlet pipe 3 front end fixedly connected with fixed block 4, the inner wall rotationally connected with rotating rod 5 in fixed block 4, rotating rod 5 rear end is connected with filter screen 8 through clamping plate 6 and clamping sleeve 9, and rotating rod 5 outer wall is provided with torsional spring 7, the rear end of shell 1 is fixedly connected with gear box 18, and the front end bottom side of gear box 18 is fixedly connected with connecting block 17, and the front end of connecting block 17 is fixedly connected with connecting disc 16, and motor 11 is installed on the front end of connecting disc 16 through fixed frame, and the driving end of motor 11 is fixedly connected with rotating shaft two 21, and rotating shaft one 20 is connected with rotating shaft two 21 through rotating roller one 12, belt 13 and rotating roller two 14 on the outer wall of rotating shaft two 21, and the outer wall front side of rotating shaft one 20 is fixedly connected with flat gear 15, and the top end of flat gear 15 is engagedly connected with gear ring 19, and gear ring 19 is rotationally connected on the outer wall of connecting disc 16, and the front end of gear ring 19 is fixedly connected with fan blade 10, and fan blade 10 is rotationally connected on the rear end of air inlet pipe 3;

[0025] Specific, start motor 11, drive shaft two 21 rotation, in the process of rotating shaft two 21, through the transmission effect of belt 13, drive synchronous rotation with belt 13 connected with the roll two 14, with the rotation of the roll two 14, in turn drive the rotation of the flat gear 15, because the flat gear 15 and the gear ring 19 mesh with each other, the rotation of the flat gear 15 promotes the gear ring 19 in the outer wall of the connecting disc 16 to make circular motion, thus the rotation of the gear ring 19 drives the rotation of the fan blade 10, at this time, under the action of high speed rotation of the fan blade 10, the air outside the shell 1 is continuously sucked into the shell 1 through the inlet pipe 3, and then discharged from the air outlet opened at the top end of the shell 1, in the process of air flowing through the inside of the shell 1, it will pass through the running motor 11, use the flowing air to take away the heat generated by the motor 11 in the working process, so as to realize the heat dissipation and cooling function of the motor 11, the air sucked into the shell 1 through the inlet pipe 3 will be filtered through the filter screen 8, effectively blocking the impurities in the air from entering the fan, preventing the accumulation of impurities affecting the performance of the fan.

[0026] Referring to Figure 1 , Figure 4 and Figure 5 , the roll one 12 located on the outer wall of the shaft two 21, the roll two 14 is fixedly connected to the outer wall of the shaft one 20 rear side, the outer wall of the roll one 12 is connected with the roll two 14 through the belt 13, the clamping plate 6 located at the rear end of the rotating rod 5, the clamping plate 6 bottom left side is connected with the clamping sleeve 9, the clamping sleeve 9 is fixedly connected to the front end of the filter screen 8, one end of the torsional spring 7 is connected to the inner wall of the fixed block 4, the other end of the torsional spring 7 is connected to the front end of the clamping plate 6, the outer wall of the filter screen 8 is fixedly connected with the limiting block 22, the limiting block 22 is slidingly connected to the inner wall of the inlet pipe 3, the shell 1 front and rear two ends right side are fixedly connected with the mounting bracket 2, the top end of the shell 1 is provided with an air outlet;

[0027] Specifically, rotating the rotating rod 5 drives the rotation of the clamping plate 6, so that the clamping plate 6 bottom left side is separated from the clamping sleeve 9 fixedly connected to the front end of the filter screen 8, so that the filter screen 8 can be slid along the inner wall of the inlet pipe 3 and pulled out for cleaning. When the filter screen 8 is cleaned, rotate the rotating rod 5 again to reinstall the filter screen 8 along the inner wall of the inlet pipe 3. Then loosen the external force applied to the rotating rod 5. Under the elastic restoring force of the torsional spring 7, one end of the torsional spring 7 is fixedly connected to the inner wall of the fixed block 4, and the other end is connected to the front end of the clamping plate 6 and pulls the clamping plate 6 back to the initial position, so that the clamping plate 6 is clamped with the clamping sleeve 9 again, so that the filter screen 8 is fixedly connected to the inlet pipe 3, ensuring the normal operation of the fan. The limiting block 22 on the outer wall of the filter screen 8 limits the sliding direction. The centrifugal fan can be installed at a suitable working position by using the mounting bracket 2 on the shell 1.

[0028] Working principle: centrifugal fan is fixed to the appropriate position through mounting frame 2, start motor 11, through the shaft two 21 driven rotating roller 12 rotation, then under the action of belt 13, driven rotating roller 14 rotation, when rotating roller two 14 in rotation, drive spur gear 15 rotation, because spur gear 15 and gear ring 19 mesh with each other, when spur gear 15 rotation, through gear ring 19 driven fan blade 10 rotation, the air outside the shell 1 through the air inlet pipe 3 into the shell 1, then from the air outlet on the shell 1 flow out, in the air flow, will pass through the motor 11, so that when the centrifugal fan in operation, will be motor 11 cooling, when the centrifugal fan starts, through the filter screen 8 will be filtered into the shell 1 air, when the centrifugal fan is used for a period of time, rotating the rod 5 driven card plate 6 rotation, make card plate 6 cancel the clamping of the sleeve 9, then can filter screen 8 from the air inlet pipe 3 is disassembled, filter screen 8 cleaning and maintenance, when the filter screen 8 cleaning is completed, first rotating the rod 5 driven card plate 6 rotation, filter screen 8 is installed to the air inlet pipe 3 after, cancel the force applied to the rod 5, under the action of torsional spring 7 will be card plate 6 back to the original position, make card plate 6 to sleeve 9 clamping, so that the filter screen 8 is fixed to the air inlet pipe 3.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A centrifugal fan having an automatic heat dissipation function, characterized by: The utility model relates to a filter, including shell (1), shell (1) front end fixedly connected with air inlet pipe (3), air inlet pipe (3) front end fixedly connected with fixed block (4), fixed block (4) inner wall rotatable connection has the rotation bar (5), and the rotation bar (5) rear end is connected with filter screen (8) through the engagement subassembly, and the rotation bar (5) outer wall is provided with torsion spring (7), and the shell (1) rear end fixedly connected with gear box (18), gear box (18) front end bottom side fixedly connected with connecting block (17), connecting block (17) front end fixedly connected with connecting disc (16), connecting disc (16) front end is installed with motor (11) through the fixed frame, and motor (11) drive end fixedly connected with pivot no.

2. The centrifugal fan with automatic heat dissipation function according to claim 1, characterized in that: The linkage assembly includes a rotating roller one (12) located on the outer wall of the second rotating shaft (21), a rotating roller two (14) fixedly connected to the outer wall of the first rotating shaft (20) at the rear side, and the rotating roller one (12) is connected to the rotating roller two (14) through a belt (13).

3. The centrifugal fan with automatic heat dissipation function according to claim 1, characterized in that: The engagement assembly includes a clamping plate (6) located at the rear end of the rotation bar (5), the clamping plate (6) is connected to the clamping sleeve (9) at the bottom left side, and the clamping sleeve (9) is fixedly connected to the front end of the filter screen (8).

4. The centrifugal fan with automatic heat dissipation function according to claim 1, characterized in that: One end of the torsion spring (7) is connected to the inner wall of the fixed block (4), and the other end of the torsion spring (7) is connected to the front end of the clamping plate (6).

5. The centrifugal fan with automatic heat dissipation function according to claim 1, characterized in that: The outer wall of the filter screen (8) is fixedly connected with a limiting block (22), and the limiting block (22) is slidingly connected to the inner wall of the air inlet pipe (3).

6. The centrifugal fan with automatic heat dissipation function according to claim 1, characterized in that: The mounting frame (2) is fixedly connected to the right side of both ends of the shell (1).

7. The centrifugal fan with automatic heat dissipation function according to claim 1, characterized in that: An air outlet is formed at the top end of the shell (1). The utility model relates to a filter, including shell (1), shell (1) front end fixedly connected with air inlet pipe (3), air inlet pipe (3) front end fixedly connected with fixed block (4), fixed block (4) inner wall rotatable connection has the rotation bar (5), and the rotation bar (5) rear end is connected with filter screen (8) through the engagement subassembly, and the rotation bar (5) outer wall is provided with torsion spring (7), and the shell (1) rear end fixedly connected with gear box (18), gear box (18) front end bottom side fixedly connected with connecting block (17), connecting block (17) front end fixedly connected with connecting disc (16), connecting disc (16) front end is installed with motor (11) through the fixed frame, and motor (11) drive end fixedly connected with pivot no.

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