Low-noise axial flow fan

Abstract

The low-noise axial flow fan comprises an axial flow fan cylinder, a motor frame is fixedly installed at the position, close to the rear end, of the inner side of the axial flow fan cylinder, an axial flow fan motor is fixedly installed in the motor frame, and a fan blade body is fixedly installed at the front end of a rotating shaft of the axial flow fan motor. Fan blades are fixedly installed on the outer side of the fan blade body, and separation nets are fixedly installed at the positions, close to the front and the back, of the inner side of the axial flow fan barrel. According to the low-noise axial flow fan, noise generated by the axial flow fan in a pipeline can be reduced through the motor frame, the fan blades and the curved-surface clamping plates, the motor frame can stably fix a motor of the axial flow fan, mutual interference between the fan blades is smaller, the bending and shaking amplitude is small, and the caused noise is reduced; by means of the curved-surface clamping plate, the axial flow fan is more convenient to disassemble and assemble, the disassembly and assembly mode is simpler, and the vibration amplitude of the axial flow fan in the ventilation pipeline can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fan structures, in particular to a low-noise axial flow fan. Background Art

[0002] Axial flow fans have a wide range of uses. They are a type of fan in which the direction of the airflow is in the same direction as the axis of the fan blades. For example, electric fans and air conditioner outdoor fans are axial flow fans. They are called axial flow because the gas flows parallel to the fan axis. Axial flow fans are usually used in situations where the flow requirements are higher and the pressure requirements are lower. Axial flow fans are fixed in position and move the air.

[0003] Existing axial flow fans have certain drawbacks when in use. The blades of traditional axial flow fans will interfere with each other. The more blades there are in the electric fan, the more serious the interference will become, and the noise will increase accordingly. The axial flow fan in the pipeline will vibrate during operation and also generate noise. In addition, the bolts need to be frequently tightened when the axial flow fan is disassembled and assembled, and the disassembly and assembly process is too troublesome. Utility Model Content

[0004] The main purpose of the utility model is to provide a low-noise axial flow fan, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A low-noise axial flow fan comprises an axial flow fan barrel, a motor frame is fixedly installed on the inner side of the axial flow fan barrel near the rear end, an axial flow fan motor is fixedly installed inside the motor frame, a fan blade body is fixedly installed on the front end of the rotating shaft of the axial flow fan motor, fan blades are fixedly installed on the outer side of the fan blade body, an isolation net is fixedly installed on the inner side of the axial flow fan barrel near the front and rear, and a curved clamping plate is fixedly installed on the outer side of the axial flow fan barrel.

[0007] Preferably, the number of fan blades installed is six, and the fan blades are evenly distributed on the outside of the fan blade body, the number of isolation nets installed is two, and the axial flow fan motor and the fan blades are located between the isolation nets, and the number of curved surface clips installed is twelve, and the curved surface clips are evenly distributed on the outside of the axial flow fan barrel.

[0008] Preferably, the fan blade includes a fan blade body, a fan blade shaft and a magnetic strip.

[0009] Preferably, the fan blade body is fixedly installed on the outer side of the fan blade body, the fan blade shaft is fixedly installed in the middle of the fan blade body, and the magnetic strip is fixedly installed in the groove on the side of the fan blade body. There are six fan blade bodies installed, and the fan blade bodies are evenly distributed on the outer side of the fan blade body.

[0010] Preferably, the curved card plate includes a thick curved sponge pad, a curved plate, a curved card strip, an inclined curved plate and a thin curved sponge pad.

[0011] Preferably, the thick curved sponge pad is fixedly installed on the outside of the axial flow fan barrel, and twelve thick curved sponge pads are installed, and the thick curved sponge pads are evenly distributed on the outside of the axial flow fan barrel.

[0012] Preferably, the curved panel is fixedly installed on the outside of the thick curved sponge pad, the curved clips are fixedly installed on the outside of the curved panel at both ends, the inclined curved plate is fixedly installed on the front surface of the curved panel, the thin curved sponge pad is fixedly installed on the outside of the curved panel, and the thin curved sponge pad is located between the curved clips.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, the motor frame, fan blades and curved pallet are arranged, and the noise generated by the axial flow fan in the pipeline can be reduced, wherein the motor frame can stably fix the axial flow fan motor, the mutual interference between the fan blades is smaller, the bending jitter amplitude is small, and the noise caused is reduced; the curved pallet makes the disassembly and assembly process of the axial flow fan more convenient, the disassembly and assembly method is simpler, and can reduce the vibration amplitude of the axial flow fan in the ventilation duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a low-noise axial flow fan of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of an axial flow fan cylinder, a motor frame and an axial flow fan motor of a low-noise axial flow fan of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of an axial flow fan cylinder, a motor frame, an axial flow fan motor, a fan blade body and a fan blade of a low-noise axial flow fan of the utility model;

[0018] Figure 4 This is a schematic diagram of the fan blade structure of a low-noise axial flow fan of the utility model;

[0019] Figure 5The utility model is a schematic diagram of the decomposition of the curved surface card plate structure of a low-noise axial flow fan.

[0020] In the figure: 1. Axial fan barrel; 2. Motor frame; 3. Axial fan motor; 4. Fan blade body; 5. Fan blade; 501. Fan blade body; 502. Fan blade shaft; 503. Magnetic strip; 6. Isolation net; 7. Curved card plate; 701. Thick curved sponge pad; 702. Curved panel; 703. Bent card strip; 704. Inclined curved plate; 705. Thin curved sponge pad. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-5 As shown, a low-noise axial flow fan comprises an axial flow fan barrel 1, a motor frame 2 is fixedly installed on the inner side of the axial flow fan barrel 1 near the rear end, an axial flow fan motor 3 is fixedly installed inside the motor frame 2, a fan blade body 4 is fixedly installed on the front end of the rotating shaft of the axial flow fan motor 3, and fan blades 5 are fixedly installed on the outer side of the fan blade body 4, an isolation net 6 is fixedly installed on the inner side of the axial flow fan barrel 1 near the front and rear, and a curved surface clamping plate 7 is fixedly installed on the outer side of the axial flow fan barrel 1, the motor frame 2, the fan blades 5 and the curved surface clamping plate 7 can reduce the noise generated by the axial flow fan in the pipeline, wherein the motor frame 2 can stably fix the axial flow fan motor 3, the mutual interference between the fan blades 5 is smaller, the bending jitter amplitude is small, and the noise caused is reduced, and the curved surface clamping plate 7 makes the disassembly and assembly process of the axial flow fan more convenient, the disassembly and assembly method is simpler, and can reduce the vibration amplitude of the axial flow fan in the ventilation duct.

[0023] There are six installed fan blades 5, which are evenly distributed on the outside of the fan blade body 4, two installed isolation nets 6, the axial flow fan motor 3 and the fan blades 5 are located between the isolation nets 6, twelve installed curved surface card plates 7, which are evenly distributed on the outside of the axial flow fan barrel 1; the fan blade 5 includes a fan blade body 501, a fan blade shaft 502 and a magnetic strip 503; the fan blade body 501 is fixedly installed on the outside of the fan blade body 4, the fan blade shaft 502 is fixedly installed in the middle of the fan blade body 501, the magnetic strip 503 is fixedly installed in the groove on the side of the fan blade body 501, and there are six installed fan blade bodies 501, which are evenly distributed on the fan blade body 4. The outside of the fan blade body 4; the curved card plate 7 includes a thick curved sponge pad 701, a curved panel 702, a curved card strip 703, an inclined curved plate 704 and a thin curved sponge pad 705; the thick curved sponge pad 701 is fixedly installed on the outside of the axial flow fan barrel 1, and there are twelve thick curved sponge pads 701 installed, and the thick curved sponge pads 701 are evenly distributed on the outside of the axial flow fan barrel 1; the curved panel 702 is fixedly installed on the outside of the thick curved sponge pad 701, the curved card strip 703 is fixedly installed on the outside of the curved panel 702 at both ends, the inclined curved plate 704 is fixedly installed on the front surface of the curved panel 702, the thin curved sponge pad 705 is fixedly installed on the outside of the curved panel 702, and the thin curved sponge pad 705 is located between the curved card strips 703.

[0024] It should be noted that the utility model is a low-noise axial flow fan. When in use, among the motor frame 2, the fan blades 5 and the curved card plate 7, the inclined curved plate 704 is facing forward, and the axial flow fan is inserted as a whole into the ventilation duct to be installed. The inclined curved plate 704 makes it easier to insert the axial flow fan into the ventilation duct, and the thick curved sponge pad 701 is compressed until the curved card strip 703 is inserted into the corresponding card slot in the through-hole duct. The thick curved sponge pad 701 and the thin curved sponge pad 705 play a role in shock absorption and buffering. The motor frame 2 can fix the axial flow fan motor 3 more stably, and the magnetic strip 503 on one side of the fan blade body 501 will repel the next fan blade body The magnetic strip 503 on the other side of the body 501 keeps the interval of the fan blade body 501 stable when the fan blade 5 rotates. The fan blade shaft 502 reduces the bending and shaking amplitude of the fan blade body 501. The isolation net 6 plays an isolation role to prevent garbage from being stirred into the interior of the axial flow fan. The motor frame 2, fan blades 5 and the curved card plate 7 can reduce the noise generated by the axial flow fan in the pipeline, wherein the motor frame 2 can stably fix the axial flow fan motor 3, the mutual interference between the fan blades 5 is smaller, the bending and shaking amplitude is small, and the noise caused is reduced. The curved card plate 7 makes the disassembly and assembly process of the axial flow fan more convenient, the disassembly and assembly method is simpler, and can reduce the vibration amplitude of the axial flow fan in the ventilation duct.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A low-noise axial flow fan, characterized in that: The invention comprises an axial flow fan barrel (1), a motor frame (2) is fixedly mounted on the inner side of the axial flow fan barrel (1) near the rear end, an axial flow fan motor (3) is fixedly mounted inside the motor frame (2), a fan blade body (4) is fixedly mounted on the front end of the rotating shaft of the axial flow fan motor (3), a fan blade (5) is fixedly mounted on the outer side of the fan blade body (4), an isolation net (6) is fixedly mounted on the inner side of the axial flow fan barrel (1) near the front and rear ends, and a curved surface clamping plate (7) is fixedly mounted on the outer side of the axial flow fan barrel (1).

2. A low-noise axial flow fan according to claim 1, characterized in that: The number of fan blades (5) installed is six, and the fan blades (5) are evenly distributed on the outside of the fan blade body (4); the number of isolation nets (6) installed is two, and the axial flow fan motor (3) and the fan blades (5) are located between the isolation nets (6); the number of curved surface clips (7) installed is twelve, and the curved surface clips (7) are evenly distributed on the outside of the axial flow fan barrel (1).

3. A low-noise axial flow fan according to claim 2, characterized in that: The fan blade (5) comprises a fan blade body (501), a fan blade shaft (502) and a magnetic attraction strip (503).

4. A low-noise axial flow fan according to claim 3, characterized in that: The fan blade body (501) is fixedly installed on the outer side of the fan blade body (4), the fan blade shaft (502) is fixedly installed in the middle of the fan blade body (501), and the magnetic strip (503) is fixedly installed in the groove on the side of the fan blade body (501). There are six fan blade bodies (501) installed, and the fan blade bodies (501) are evenly distributed on the outer side of the fan blade body (4).

5. A low-noise axial flow fan according to claim 4, characterized in that: The curved surface card plate (7) comprises a thick curved surface sponge pad (701), a curved plate (702), a curved card strip (703), an inclined curved plate (704) and a thin curved surface sponge pad (705).

6. A low-noise axial flow fan according to claim 5, characterized in that: The thick curved sponge pad (701) is fixedly installed on the outside of the axial flow fan barrel (1), and the number of the thick curved sponge pads (701) installed is twelve. The thick curved sponge pads (701) are evenly distributed on the outside of the axial flow fan barrel (1).

7. A low-noise axial flow fan according to claim 6, characterized in that: The curved panel (702) is fixedly mounted on the outside of the thick curved sponge pad (701), the curved clip strips (703) are fixedly mounted on the outside of the curved panel (702) at both ends, the inclined curved plate (704) is fixedly mounted on the front surface of the curved panel (702), the thin curved sponge pad (705) is fixedly mounted on the outside of the curved panel (702), and the thin curved sponge pad (705) is located between the curved clip strips (703).

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