Stepless speed regulation energy-saving low-noise centrifugal fan

Abstract

The utility model provides a stepless speed regulation energy-saving type low-noise centrifugal fan, and belongs to the technical field of centrifugal fans. The stepless speed regulation energy-saving low-noise centrifugal fan comprises a centrifugal fan main body, the centrifugal fan main body comprises an EC motor, a volute, a base, a buckle, a sound insulation plate, a flange, a sound absorption plate and a top cover, the EC motor is arranged in the centrifugal fan main body, the volute is arranged in the centrifugal fan main body, and the base is arranged on the base. The base is arranged at the bottom end of the centrifugal fan body, when the centrifugal fan needs to be used, stepless speed regulation can be achieved through the EC motor and the fan, performance change is achieved under the condition that power is not cut off or the motor is replaced, meanwhile, a sound insulation cotton strip is arranged in the centrifugal fan body, noise can be reduced when the EC motor is used, and the service life of the centrifugal fan is prolonged. And in cooperation with the sound-absorbing sponge at the bottom end of the top cover, the EC motor can be just helped to reduce noise, stepless speed regulation can be achieved in the using process, and meanwhile the generated noise is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field, specifically, relate to a stepless speed regulation energy-saving low noise centrifugal fan. BACKGROUND

[0002] Centrifugal fan is relied on the input mechanical energy, improves the gas pressure and sends the gas machine, it is a driven fluid machinery. Centrifugal fan is widely used in factory, mine, tunnel, cooling tower, vehicle, ship and building ventilation, dust removal and cooling, boiler and industrial furnace ventilation and air induction, air conditioning equipment and household appliance equipment cooling and ventilation.

[0003] At present most of the fresh air system fan adopts the fixed speed motor transmission mode, this kind of product is fixed at a fan speed, the performance is fixed, cannot change according to the scene environment demand etc. Defects, this patent equipment can effectively optimize such shortcomings, therefore, we make improvement, propose a stepless speed regulation energy-saving low noise centrifugal fan. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a stepless speed regulation energy-saving low noise centrifugal fan.

[0005] The utility model is realized as follows:

[0006] The stepless speed regulation energy-saving low noise centrifugal fan, including centrifugal fan main part, the centrifugal fan main part includes EC motor, volute, base, buckle, sound insulation board, flange, sound absorption board and top cap, the EC motor is arranged at the inside of the centrifugal fan main part, the volute is arranged at the inside of the centrifugal fan main part, the base is arranged at the bottom end of the centrifugal fan main part, the buckle is arranged at the surface of the centrifugal fan main part, the sound insulation board is arranged at the inside of the base, the flange is arranged at the outside of the centrifugal fan main part, the sound absorption board is arranged at the inside of the base, the top cap is arranged at the top end of the centrifugal fan main part.

[0007] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0008] Further, the base includes polyester fiber grid board, and the surface of the base is provided with the polyester fiber grid board.

[0009] The beneficial effects of the above further scheme are that the base absorbs the noise generated when the EC motor is connected to the base by the polyester fiber grid board.

[0010] Further, the sound insulation board includes sound insulation felt and sound insulation foam, the bottom end of the sound insulation board is fixedly connected with the sound insulation felt, and the top end of the sound insulation board is fixedly connected with the sound insulation foam.

[0011] The beneficial effect of adopting the above-mentioned further solutions is that the sound insulation panels can better absorb the noise generated by the EC motor by using sound insulation felt and sound insulation foam.

[0012] Furthermore, the top cover includes sound-absorbing sponge, and the bottom end of the top cover is fixedly installed with sound-absorbing sponge.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the sound-absorbing sponge can help the top cover to perform auxiliary functions such as sound insulation and noise reduction for the EC motor.

[0014] Furthermore, the polyester fiber mesh plate is provided in two sets, and the polyester fiber mesh plate is respectively installed on the left and right sides of the connection between the volute and the centrifugal fan body.

[0015] The advantage of adopting the above-mentioned further solution is that it allows the polyester fiber mesh plate to better absorb the vibration and noise generated at the connection point on both sides of the connection between the volute and the centrifugal fan body.

[0016] Furthermore, sound-absorbing cotton strips are installed on the inner side of the centrifugal fan body.

[0017] The advantage of adopting the above-mentioned further solution is that it makes it easier for the centrifugal fan body to reduce internal noise through sound-absorbing cotton strips.

[0018] Furthermore, the sound-absorbing panel and the polyester fiber mesh panel are bonded together, and the sound-absorbing panel and the sound-insulating foam are bonded together.

[0019] The beneficial effect of adopting the above-mentioned further solution is that noise and vibration are transmitted to the sound-absorbing panel through the polyester fiber mesh panel, and the sound-absorbing panel is then absorbed by the sound insulation panel.

[0020] The beneficial effects of this utility model are as follows: The stepless speed-regulating, energy-saving, low-noise centrifugal fan obtained by the above design can achieve stepless speed regulation when used. By adopting an EC motor, the fan can change its performance without interrupting power or replacing the motor. At the same time, the internal structure of the centrifugal fan body is equipped with sound-insulating cotton strips to help reduce the noise of the EC motor during use. Combined with the sound-absorbing sponge at the bottom of the top cover, it can help reduce the noise of the EC motor. During use, it can achieve stepless speed regulation while generating less noise. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural diagram of the stepless speed-regulating energy-saving low-noise centrifugal fan provided by this utility model;

[0023] Figure 2 A three-dimensional structural diagram of the base provided by this utility model;

[0024] Figure 3 A cross-sectional structural diagram of the base provided by this utility model;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the top cover provided by this utility model.

[0026] In the diagram: 100, centrifugal fan body; 200, EC motor; 300, volute; 400, base; 4001, polyester fiber mesh board; 500, buckle; 600, sound insulation board; 6001, sound insulation felt; 6002, sound insulation foam; 700, flange; 800, sound absorption board; 900, top cover; 9001, sound absorption sponge. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Example

[0030] Please see Figures 1-4This utility model provides a technical solution: a stepless speed-regulating, energy-saving, low-noise centrifugal fan, including a centrifugal fan body 100.

[0031] Please see Figures 1-4 The centrifugal fan body 100 includes an EC motor 200, a volute 300, a base 400, a buckle 500, a sound insulation panel 600, a flange 700, a sound absorption panel 800, and a top cover 900. The EC motor 200 is located inside the centrifugal fan body 100, the volute 300 is located inside the centrifugal fan body 100, the base 400 is located at the bottom of the centrifugal fan body 100, the buckle 500 is located on the surface of the centrifugal fan body 100, the sound insulation panel 600 is located inside the base 400, the flange 700 is located on the outside of the centrifugal fan body 100, the sound absorption panel 800 is located inside the base 400, and the top cover 900 is located at the top of the centrifugal fan body 100.

[0032] As one embodiment of this utility model, the base 400 further includes a polyester fiber mesh plate 4001, and the surface of the base 400 is equipped with the polyester fiber mesh plate 4001.

[0033] As one embodiment of this utility model, the sound insulation board 600 further includes a sound insulation felt 6001 and a sound insulation foam 6002. The sound insulation felt 6001 is fixedly connected to the bottom end of the sound insulation board 600, and the sound insulation foam 6002 is fixedly connected to the top end of the sound insulation board 600.

[0034] As one embodiment of this utility model, the top cover 900 further includes a sound-absorbing sponge 9001, and the sound-absorbing sponge 9001 is fixedly installed at the bottom end of the top cover 900.

[0035] As one embodiment of this utility model, the polyester fiber mesh plate 4001 is further provided in two sets, and the polyester fiber mesh plate 4001 is respectively installed on the left and right sides of the connection between the volute 300 and the centrifugal fan body 100.

[0036] As one embodiment of this utility model, a sound-absorbing cotton strip is further provided on the inner side of the centrifugal fan body 100.

[0037] As one embodiment of this utility model, the sound-absorbing panel 800 and the polyester fiber mesh panel 4001 are bonded together, and the sound-absorbing panel 800 and the sound-insulating foam 6002 are bonded together.

[0038] Specifically, the working principle of this stepless speed-regulating energy-saving low-noise centrifugal fan is as follows: When in operation, the fan can achieve stepless speed regulation by using the EC motor 200, allowing performance changes without interrupting power or replacing the motor. Simultaneously, the centrifugal fan body 100 is equipped with sound-absorbing cotton strips to help reduce noise during operation. The polyester fiber mesh plate 4001 transmits vibrations and noise to the sound-absorbing plate 800, where they are absorbed by the sound-absorbing felt 6001 and sound-absorbing foam 6002 on the surface of the sound-absorbing plate 600. Combined with the sound-absorbing sponge 9001 at the bottom of the top cover 900, this effectively helps reduce noise from the EC motor 200, achieving stepless speed regulation while generating relatively low noise during operation.

[0039] It should be noted that the specific model specifications of the forward-curving impeller clip 500 and the servo motor flange 700 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0040] The forward-curving impeller clip 500 and the servo motor flange 700, and their operating principles, are clear to those skilled in the art and will not be described in detail here.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A stepless speed-regulating, energy-saving, low-noise centrifugal fan, characterized in that, include, A centrifugal fan body (100) includes an EC motor (200), a volute (300), a base (400), a buckle (500), a sound insulation panel (600), a flange (700), a sound absorption panel (800), and a top cover (900). The EC motor (200) is located inside the centrifugal fan body (100), the volute (300) is located inside the centrifugal fan body (100), and the base (400) is located inside the top cover (900). 00) is located at the bottom end of the centrifugal fan body (100), the buckle (500) is located on the surface of the centrifugal fan body (100), the sound insulation plate (600) is located inside the base (400), the flange (700) is located on the outside of the centrifugal fan body (100), the sound absorption plate (800) is located inside the base (400), and the top cover (900) is located at the top of the centrifugal fan body (100).

2. The stepless speed-regulating, energy-saving, low-noise centrifugal fan according to claim 1, characterized in that, The base (400) includes a polyester fiber mesh plate (4001), and the surface of the base (400) is fitted with the polyester fiber mesh plate (4001).

3. The stepless speed-regulating, energy-saving, low-noise centrifugal fan according to claim 2, characterized in that, The sound insulation board (600) includes a sound insulation felt (6001) and a sound insulation foam (6002). The bottom end of the sound insulation board (600) is fixedly connected to the sound insulation felt (6001), and the top end of the sound insulation board (600) is fixedly connected to the sound insulation foam (6002).

4. The stepless speed-regulating, energy-saving, low-noise centrifugal fan according to claim 1, characterized in that, The top cover (900) includes a sound-absorbing sponge (9001), and the bottom end of the top cover (900) is fixedly installed with the sound-absorbing sponge (9001).

5. A stepless speed-regulating, energy-saving, low-noise centrifugal fan according to claim 2, characterized in that, Two sets of polyester fiber mesh plates (4001) are provided, and the polyester fiber mesh plates (4001) are respectively installed on the left and right sides of the connection between the volute (300) and the centrifugal fan body (100).

6. The stepless speed-regulating, energy-saving, low-noise centrifugal fan according to claim 1, characterized in that, The inner side of the centrifugal fan body (100) is equipped with sound-absorbing cotton strips.

7. A stepless speed-regulating, energy-saving, low-noise centrifugal fan according to claim 3, characterized in that, The sound-absorbing panel (800) is bonded to the polyester fiber mesh panel (4001), and the sound-absorbing panel (800) is bonded to the sound-insulating foam (6002).

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