Low noise centrifugal fan

Abstract

The utility model belongs to centrifugal fan technical field especially for low noise centrifugal fan. Including support frame, the upper end surface of support frame is provided with centrifugal fan body, servo motor, servo motor is butt -joint through drive shaft and centrifugal fan blade in centrifugal fan body, be provided with intermittent oiling lubricating component on centrifugal fan body, intermittent oiling lubricating component is located the top of drive shaft, intermittent oiling lubricating component is used for lubricating servo motor and drive shaft junction place. The utility model discloses the setting of intermittent oiling lubricating component can intermittently oiling lubricating servo motor and drive shaft junction place, to this reduces the friction between drive shaft and servo motor upper limit part, like this not only can reduce the loss of electric energy when the device uses, thereby plays the role of energy -conserving, and can also reduce the noise generated by the friction between drive shaft and servo motor upper limit part.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, specifically a low-noise centrifugal fan. Background Technology

[0002] Centrifugal fans are important airflow machinery. They mainly rely on an electric motor to drive the impeller to rotate at high speed through a drive shaft, which accelerates and pressurizes the gas under the action of centrifugal force, thereby realizing the gas transportation and pressure control. Centrifugal fans have the characteristics of high efficiency, large flow rate, and stable pressure curve, and are widely used in ventilation, air conditioning, refrigeration, dust removal, gas transportation and other systems.

[0003] Currently, in order to improve the stability of centrifugal fans, limit components are installed on the motors of centrifugal fans to restrict the position of the drive shaft connected to the motor, thereby improving the stability of the motor's kinetic energy output. However, during normal use, friction will occur between the drive shaft and the limit components on the motor. This friction not only increases the power consumption required by the centrifugal fan during use, but also increases the noise level of the centrifugal fan.

[0004] Therefore, we proposed a low-noise centrifugal fan to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a low-noise centrifugal fan, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A low-noise centrifugal fan includes a support frame. The upper surface of the support frame is provided with a centrifugal fan body and a servo motor. The servo motor is connected to the centrifugal fan blades inside the centrifugal fan body via a drive shaft. An intermittent oiling lubrication assembly is provided on the centrifugal fan body. The intermittent oiling lubrication assembly is located above the drive shaft and is used to lubricate the connection between the servo motor and the drive shaft.

[0008] Furthermore, the intermittent oiling lubrication assembly includes a first transmission component sleeved on the drive shaft and a mounting bracket fixedly mounted on the centrifugal fan body. A fixed box is fixedly mounted on the mounting bracket, and a second transmission component is rotatably mounted on the fixed box. The first transmission component and the second transmission component are connected by a belt.

[0009] Furthermore, an oil storage tank is fixedly installed on the upper end face of the fixed box, and the oil storage tank is connected to the fixed box. A turntable is rotatably installed inside the fixed box, and an oil groove is opened on the turntable. An oil supply pipe is fixedly installed on the lower end face of the fixed box, and the oil supply pipe is connected to the fixed box. The end of the oil supply pipe away from the fixed box is located above the connection between the servo motor and the drive shaft.

[0010] Furthermore, an air outlet pipe and an air inlet pipe are sequentially fixed on the centrifugal fan body, and multiple support legs are sequentially fixed on the lower end face of the support frame.

[0011] Furthermore, a mounting base is fixedly provided on the lower end face of the servo motor, and the mounting base is fixedly connected to the support frame.

[0012] Furthermore, the upper end face of the support frame is provided with an oil receiving tank, which is located below the connection between the servo motor and the drive shaft. A flip cover is fixedly provided on the upper end face of the oil receiving tank, and mounting plates are fixedly provided on both sides of the lower end face of the oil receiving tank. The mounting plates are fixedly connected to the support frame.

[0013] Furthermore, both the turntable and the fixed box have circular cross-sections, the outer diameter of the turntable is adapted to the inner diameter of the fixed box, the diameter of the first transmission component is smaller than the diameter of the second transmission component, and an oil filling port is fixedly provided on the upper end face of the oil storage tank.

[0014] Compared with the prior art, the present invention provides a low-noise centrifugal fan, which has the following beneficial effects:

[0015] This invention, through the intermittent oiling lubrication component, can intermittently lubricate the connection between the servo motor and the drive shaft, thereby reducing the friction between the drive shaft and the upper limit switch of the servo motor. This not only reduces the power consumption during device use, thus achieving energy saving, but also reduces the noise generated by the friction between the drive shaft and the upper limit switch of the servo motor. Attached Figure Description

[0016] Figure 1 This is a first-person perspective schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a second-view schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a perspective view of the connection between the centrifugal fan body and the intermittent oiling lubrication assembly of this utility model;

[0019] Figure 4 This is a perspective view of the connection between the fixed box and the second transmission component of this utility model;

[0020] Figure 5 This is a cross-sectional view of the fixing box of this utility model.

[0021] In the diagram: 1. Support frame; 100. Drive shaft; 2. Centrifugal fan body; 3. Servo motor; 4. Intermittent oiling lubrication assembly; 41. First transmission component; 42. Mounting bracket; 43. Fixing box; 44. Second transmission component; 45. Oil storage tank; 46. Turntable; 48. Oil trough; 49. Oil supply pipe; 5. Air outlet pipe; 6. Air inlet pipe; 7. Support legs; 8. Mounting base; 9. Oil receiving tank body; 10. Flip-top cover; 11. Mounting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0023] like Figure 1-5 As shown, a low-noise centrifugal fan according to an embodiment of the present invention includes a support frame 1. The upper end face of the support frame 1 is provided with a centrifugal fan body 2 and a servo motor 3. The servo motor 3 is connected to the centrifugal fan blades inside the centrifugal fan body 2 through a drive shaft 100. An intermittent oiling lubrication assembly 4 is provided on the centrifugal fan body 2. The intermittent oiling lubrication assembly 4 is located above the drive shaft 100 and is used to lubricate the connection between the servo motor 3 and the drive shaft 100.

[0024] like Figure 3 - Figure 5 As shown, the intermittent oiling lubrication assembly 4 includes a first transmission component 41 sleeved on the drive shaft 100 and a mounting bracket 42 fixedly mounted on the centrifugal fan body 2. A fixed box 43 is fixedly mounted on the mounting bracket 42, and a second transmission component 44 is rotatably mounted on the fixed box 43. The first transmission component 41 and the second transmission component 44 are connected by a belt. An oil storage tank 45 is fixedly mounted on the upper end face of the fixed box 43, and the oil storage tank 45 communicates with the fixed box 43. A turntable 46 is rotatably mounted inside the fixed box 43, and the second transmission component 44 is connected to the turntable 46. An oil groove 48 is formed on the turntable 46. An oil supply pipe 49 is fixedly mounted on the lower end face of the fixed box 43, and the oil supply pipe 49 communicates with the fixed box 43. The end of the oil supply pipe 49 away from the fixed box 43 is located above the connection between the servo motor 3 and the drive shaft 100.

[0025] By setting the intermittent oiling lubrication component 4, the connection between the servo motor 3 and the drive shaft 100 can be lubricated intermittently, thereby reducing the friction between the drive shaft 100 and the upper limit part of the servo motor 3. This not only reduces the power consumption during device use, thus achieving energy saving, but also reduces the noise generated by the friction between the drive shaft 100 and the upper limit part of the servo motor 3.

[0026] The centrifugal fan body 2 is sequentially equipped with an air outlet pipe 5 and an air inlet pipe 6. Multiple support legs 7 are sequentially fixed to the lower end face of the support frame 1. A mounting base 8 is fixedly mounted to the lower end face of the servo motor 3, and the mounting base 8 is fixedly connected to the support frame 1. The air outlet pipe 5 and air inlet pipe 6 enable the centrifugal fan body 2 to transport gas from one designated area to another, while the mounting base 8 provides support for the support frame 1.

[0027] An oil collection tank 9 is provided on the upper end face of the support frame 1. The oil collection tank 9 is located below the connection between the servo motor 3 and the drive shaft 100. A flip cover 10 is fixedly provided on the upper end face of the oil collection tank 9, and mounting plates 11 are fixedly provided on both sides of the lower end face of the oil collection tank 9. The mounting plates 11 are fixedly connected to the support frame 1. The oil collection tank 9 is used to collect excess oil after the drive shaft 100 is lubricated, and the flip cover 10 can seal the oil collection tank 9 when it is not in use.

[0028] Both the turntable 46 and the fixed box 43 have circular cross-sections. The outer diameter of the turntable 46 is matched with the inner diameter of the fixed box 43. The diameter of the first transmission component 41 is smaller than the diameter of the second transmission component 44. An oil filling port is fixedly provided on the upper end face of the oil storage tank 45.

[0029] The working principle of this practical application is as follows:

[0030] First, the servo motor 3 is started, which drives the drive shaft 100 to rotate. The drive shaft 100 drives the centrifugal fan blades and the first transmission component 41 inside the centrifugal fan body 2 to rotate. The rotation of the centrifugal fan blades transports the gas from one designated area to another. The first transmission component 41 drives the second transmission component 44 to rotate via a belt. The second transmission component 44 drives the turntable 46 to rotate. When the oil tank 48 on the turntable 46 rotates to the bottom of the oil storage tank 45, the oil in the oil storage tank 45 will fill the oil tank 48 on the turntable 46. When the filled oil tank 48 rotates to the upper oil pipe 49, the oil in the oil tank 48 will be transported to the connection between the servo motor 3 and the drive shaft 100 through the upper oil pipe 49 to lubricate the connection between the servo motor 3 and the drive shaft 100. After lubrication, the excess oil falls into the oil receiving tank 9 and is collected.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-noise centrifugal fan, including a support frame (1), characterized in that: The upper end face of the support frame (1) is provided with a centrifugal fan body (2) and a servo motor (3). The servo motor (3) is connected to the centrifugal fan blades inside the centrifugal fan body (2) through a drive shaft (100). An intermittent oiling lubrication assembly (4) is provided on the centrifugal fan body (2). The intermittent oiling lubrication assembly (4) is located above the drive shaft (100). The intermittent oiling lubrication assembly (4) is used to lubricate the connection between the servo motor (3) and the drive shaft (100).

2. The low-noise centrifugal fan according to claim 1, characterized in that: The intermittent oiling lubrication assembly (4) includes a first transmission component (41) sleeved on the drive shaft (100) and a mounting bracket (42) fixedly mounted on the centrifugal fan body (2). A fixed box (43) is fixedly mounted on the mounting bracket (42), and a second transmission component (44) is rotatably mounted on the fixed box (43). The first transmission component (41) and the second transmission component (44) are connected by a belt.

3. The low-noise centrifugal fan according to claim 2, characterized in that: An oil storage tank (45) is fixedly installed on the upper end face of the fixed box (43). The oil storage tank (45) is connected to the fixed box (43). A turntable (46) is rotatably installed inside the fixed box (43). An oil groove (48) is opened on the turntable (46). An upper oil pipe (49) is fixedly installed on the lower end face of the fixed box (43). The upper oil pipe (49) is connected to the fixed box (43), and the end of the upper oil pipe (49) away from the fixed box (43) is located above the connection between the servo motor (3) and the drive shaft (100).

4. The low-noise centrifugal fan according to claim 1, characterized in that: The centrifugal fan body (2) is fixedly provided with an air outlet pipe (5) and an air inlet pipe (6) in sequence, and multiple support legs (7) are fixedly provided on the lower end face of the support frame (1) in sequence.

5. The low-noise centrifugal fan according to claim 1, characterized in that: The lower end face of the servo motor (3) is fixedly provided with a mounting base (8), and the mounting base (8) is fixedly connected to the support frame (1).

6. The low-noise centrifugal fan according to claim 1, characterized in that: The upper end face of the support frame (1) is provided with an oil receiving box (9), which is located below the connection between the servo motor (3) and the drive shaft (100). The upper end face of the oil receiving box (9) is fixedly provided with a flip cover (10), and the lower end face of the oil receiving box (9) is fixedly provided with mounting plates (11) on both sides. The mounting plates (11) are fixedly connected to the support frame (1).

7. The low-noise centrifugal fan according to claim 3, characterized in that: The turntable (46) and the fixed box (43) are both circular in cross-section. The outer diameter of the turntable (46) is matched with the inner diameter of the fixed box (43). The diameter of the first transmission component (41) is smaller than the diameter of the second transmission component (44). The upper end face of the oil storage tank (45) is fixedly provided with an oil filling port.

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