CN106640715A - Air system device and air purifier - Google Patents

Abstract

The invention provides an air system device. The air system device comprises an air channel device which is a double-connection type centrifugal air channel, wherein the air channel device comprises two air channels which are mutually fixed as a whole and can independently circulate air; a centrifugal fan is arranged in each air channel and used for enabling air circling. The invention also provides an air purifier using the air system device. With the adoption of the air system device and the air purifier, the noise can be greatly reduced under the same air volume.

Description

Air system device and air purifier

technical field

The invention relates to a wind system device, especially a wind system device capable of realizing the simultaneous operation of two fans. The invention also provides an air cleaner using the wind system device.

Background technique

With the development of technology, wind system devices are widely used in household appliances and industrial fields, but how to achieve low noise while maintaining high air volume and high air pressure during the application process, or keep the air volume constant How to effectively reduce the noise has always been the focus of research. Especially for air purifiers that have sold well in recent years, due to the limited internal space, noise has always been an urgent problem to be solved when high air volume and high air pressure are required.

Contents of the invention

The main purpose of the present invention is to solve the above-mentioned problems and deficiencies, and to provide a wind system device that can greatly reduce noise under the same air volume and an air cleaner using the wind system device.

A wind system device, including an air duct device, the air duct device is a double-connected centrifugal air duct, including two air ducts that are fixed and integrated with each other and can independently carry out wind circulation, and each air duct is provided with a Centrifugal fans provide air circulation.

Further, the double-connected centrifugal air duct has an integrated structure, including upper and lower fixing seats, a centrifugal volute, a centrifugal fan and a motor, and the upper and lower ends of the centrifugal volute are connected to the upper and lower ends respectively. The two fixed seats are fixedly installed, and the middle part of the centrifugal volute is provided with a partition, which divides the double-connected centrifugal air duct into two identical air duct parts, and each of the air duct parts is equipped with a The centrifugal fan and the motor.

Further, the centrifugal volute has an Archimedes spiral.

Further, an air outlet is opened on the centrifugal volute, and an air inlet is opened on the fixed seat, so as to realize air inlet from both sides and air outlet perpendicular to the air inlet direction.

Further, the centrifugal volute has an air outlet on each air duct part, and the air outlet directions of the two air outlets are opposite, so that the air enters on both sides, the air is perpendicular to the air inlet and the air is discharged, and the two sides are opposite to each other. Out of the wind.

Further, the same centrifugal fan and motor are used in the two air duct parts.

Further, the α angle of the centrifugal volute is between 10°-80°, and can be adjusted according to different air volumes and noises.

Further, the centrifugal fan adopts forward blades.

Further, the β angle of the centrifugal fan is between 20°--90°.

The present invention also provides an air cleaner, the wind system device as mentioned above is installed inside the air cleaner.

To sum up, the present invention provides a wind system device and an air purifier using the wind system device, which adopts an integrated double-connected centrifugal air duct, which can greatly reduce the noise under the same air volume, or In the case of the same noise, the air volume is greatly increased, and the performance index of the wind system device is greatly improved; the centrifugal fan and the motor with the same structure and form, and the two centrifugal fans operate at the same time. Compared with the operation of a single fan, it achieves When the air volume is the same, the speed of the fan required by the wind system device is relatively low, the noise generated is relatively low, and energy consumption is reduced at the same time; the two air ducts are completely separated by a partition to avoid other noise and mixed flow caused by the blowing wind; The two air ducts flow in opposite directions to further avoid mixed flow and reduce noise; the use of a centrifugal volute with an Archimedes spiral reduces the occurrence of vortex on both sides of the volute and reduces the noise of the vortex. Make the air flow more smoothly, further reduce the total value of noise, and during the installation process, it can meet the requirements of narrow space and location, reduce the size of the whole machine, and save costs; the α angle of the volute can be adjusted according to different air volumes and noises , Improve the overall scope of application of the wind system device.

Description of drawings:

Fig. 1: The overall schematic diagram of a kind of wind system device of the present invention;

Fig. 2: The overall schematic diagram of a wind system device of the present invention II;

Fig. 3: a sectional view of a wind system device of the present invention;

Figure 4: Schematic diagram of the structure of a centrifugal fan in a wind system device of the present invention;

Figure 5: An enlarged view of the volute tongue of the centrifugal fan structure in a wind system device of the present invention;

Figure 6: Partial enlarged view of the centrifugal fan in a wind system device of the present invention

Among them: double-connected centrifugal air duct 1, centrifugal fan 2, fixed seat 3, motor 4, air outlet 5, air inlet 6, centrifugal volute 7, bracket 8, air duct 9, partition 10.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, a wind system device provided by the present invention includes an air duct device, the air duct device is a double-connected centrifugal air duct 1, and the double-connected centrifugal air duct 1 includes two There are air ducts 9 that can independently carry out air circulation, and a centrifugal fan is arranged in each air duct 9 to provide air circulation.

As shown in Figures 1 and 2, the double-connected centrifugal air duct 1 has an integrated structure, including two upper and lower fixing seats 3, a centrifugal volute 7, a centrifugal fan 2 and a motor 4, and the upper and lower parts of the centrifugal volute 7. The lower two ends are fixedly installed with the upper and lower fixing seats 3 respectively. In the present invention, it is recommended to use screws for fixing, which is simple, convenient and easy to operate. The two ends of the centrifugal volute 7 are provided with flanges with mounting holes, and the flanges pass through The screw is fixed to the fixing seat 3, and a sealing strip is provided between the flange and the fixing seat 3 to realize sealing and noise reduction. In practical applications, it can also be fixed by welding. A partition 10 is provided in the middle of the centrifugal volute 7, which divides the double-connected centrifugal air duct 1 into two identical air ducts 9, and each air duct 9 is equipped with a centrifugal fan of the same model. The fan 2 and the motor 4.

In order to strengthen the centrifugal volute 7 and the strength, a plurality of supports 8 can be provided on the outside of the centrifugal volute 7, between the upper and lower fixing seats 3, and the supports 8 can enhance the strength of the air duct 9 on the one hand, and on the other hand On the one hand, it can protect the air duct and avoid large-scale mechanical damage. The support 8 can be integrally formed with the centrifugal volute 7, and can also be integrally formed with one of the upper and lower fixed seats 3, fixed with another fixed seat 3 screws, or offset with another fixed seat 3.

As shown in Figures 1 to 3, at the central position of the fixed seat 3, an air inlet 6 is provided, and the air inlet 6 can be a plurality of ventilation grilles opened on the fixed seat 3, or a ventilation hole. The centrifugal fan is set concentrically. The centrifugal fan adopts a centrifugal volute 7 with an Archimedes spiral. The centrifugal volute 7 is provided with an air outlet 5, which is arranged on the side of the centrifugal fan 2. In the air duct 9, the air outlet 5 and the air inlet 9 are located. The planes are perpendicular to each other, that is, as shown in Figure 2, the air enters from the air inlet 6 at the fixed seat 3 on the side, and the air exits from the air outlet 5 of the centrifugal volute 7 perpendicular to the air inlet direction. Two air ducts 9 with the same structure form an integrated double-connected centrifugal air duct 1 through a partition 10, but the directions of the air outlets 5 of the two centrifugal volutes 7 are relatively opposite, so as to realize the two The side enters, and the wind is perpendicular to the direction of the wind, and the two sides are relatively opposite to the wind. In practical applications, the air outlet direction can be determined according to the needs, and can be placed on the same side to output air at the same time, as the method provided by the present invention can be opposite to the opposite side of the air, and the air outlet direction can also be set according to needs, that is, two outlets The included angle between the tuyere 5 improves the scope of application of the wind system device.

In practical applications, as shown in FIG. 1 , two relatively airtight air ducts 9 with the same structure can be fixedly connected to each other to form a double-connected centrifugal air duct 1 . Each air duct 9 has an upper and a lower fixing base 3 respectively, and the two fixing bases 3 without air inlets 6 of the two air ducts 9 are fixedly connected together to form an integrated double-connected centrifugal air duct 1, A shock absorber can be added between the two mutually fixed fixing seats 3 to reduce the noise generated by the operation of the motor and avoid the resonance phenomenon at the same time.

The centrifugal volute 7 has an Archimiro spiral, which can save materials and save energy consumption. In addition, the spiral distributed on the shell of the spiral is like a rib, which greatly increases the strength of the shell. The strength also disperses the wind pressure acting on the shell. In the case of limited size, optimize the flow field, increase the flow pressure of the fan, reduce the spiral flow on both sides of the volute, reduce the noise of the volute, make the air flow more smooth, and reduce the total noise. During the installation process It can meet the requirements of narrow space and location, reduce the size of the whole machine and save costs.

As shown in Figure 3, a mounting seat (not shown) may be provided at the center of the partition 10, a turnbuckle is pre-embedded in the center of the mounting seat, and a corresponding helical thread is provided at the mounting shaft end of the motor 4. , and the mounting base is fixed by spiral rotation, or there is a buckle on the mounting base, and the motor 4 is clamped and fixed on the mounting base, or the motor 4 is directly fixed on the partition. When the structure shown in Figure 1 is adopted, The motor 4 is directly fixed on the fixing seat 3 without the air inlet 6, and the fixing method of the motor 4 and the partition 10 is not limited here. Centrifugal blower 2 is fixed with the output shaft of motor 4, rotates under the drive of motor 4, completes suction, blowing action. The centrifugal fan 2 and the motor 4 are concentrically fixed on the center position of the mounting base, so that the center of gravity of the whole wind system device is stable, and the noise increase caused by overweight is reduced. In Fig. 3, the arrow direction is the wind running direction.

As shown in Figure 1 and Figure 2, in order to facilitate the fixing of the complete wind system device, the fixing seat 3 can be a square plate structure, and the four corners are rounded, and on the fixing seat 3 outside the centrifugal volute 7, There are a plurality of mounting screw holes, which are generally arranged at the four corners of the fixing seat 3 outside the centrifugal volute 7, and each corner is provided with a screw hole for fixing.

As shown in Figure 4 and Figure 5, the α angle of the volute tongue of the centrifugal volute 7 is between 10°-80°, and the volute tongue is rounded, and the radius R of the rounded part is 10-15mm Between, the distance h between the volute tongue and the outer edge of the centrifugal fan 2 is between 9-13mm. In this embodiment, the α angle is 59°, R is 12mm, and h is 11.3mm. The above parameters can be changed according to different Air volume and noise can be adjusted to suit different appliances.

As shown in Figure 6, the centrifugal fan 2 adopts forward-facing blades to further reduce the noise during operation. The outer edge of the centrifugal fan 2 is serrated, and the β angle of the centrifugal fan 2 is between 20°-90° , preferably 44°, the distance h between the outer edge of the centrifugal fan 2 and the volute tongue is 11.3mm. The above parameters can be adjusted according to different air volume and noise to suit different appliances.

As mentioned above, the wind system device provided by the present invention includes an integrated double-connected centrifugal air duct 1 , two identical centrifugal fans 2 with forward blades, and two identical motors 4 . During operation, the two centrifugal fans 2 operate at the same time. Compared with the operation of a single fan to achieve the same air volume, the fan speed required by the wind system device is lower, so the noise generated by the single wind system is relatively low . When the noise of two centrifugal fans 2 is superimposed, it is not directly added, but follows the following principle:

Assuming that the sound powers of the two sound sources are W1 and W2 respectively, then the total sound power W = W1 + W2. When the sound intensity of two sound sources at a certain point is I1 and I2, the total sound intensity after superposition is Itotal=I1+I2. The resulting sound pressure is calculated as follows:

I ₁ =P ₁ ² /pc

I ₂ =P ₂ ² /pc

After the noise of the wind system is superimposed, there is only a small increase, and the calculated increase is about 3dB(A).

The existing conventional independent fan wind system requires a higher speed to achieve the same air volume, and the resulting noise is also higher. The comparison is as follows through experimental data:

Table 1:

project Integrated double wind system Traditional single fan wind system Sound pressure level Noise dB(A) 52.2 58 Motor speed r/min 1000 1600 Air volume m3/h 1100 1100

It can be seen that the air system device provided by the present invention can greatly improve the performance index, greatly reduce the noise under the same air volume; greatly increase the air volume under the same noise value; and can achieve the effect of energy saving.

The present invention also provides an air purifier. The air system device as described above is installed inside the air purifier. According to the position of the air outlet of the air purifier, adjust the distance between the two air outlets 5 of the double-connected air duct 1. The included angle is fixed inside the air purifier through the screw hole on the fixing seat 3, and the specific structure of the wind system device will not be repeated. The wind system device adopts a centrifugal fan and the centrifugal volute 7 has an Archimedes spiral, which can reduce the overall size, thereby reducing the overall volume of the air cleaner.

To sum up, the present invention provides a wind system device and an air purifier using the wind system device, which adopts an integrated double-connected centrifugal air duct, which can greatly reduce the noise under the same air volume, or In the case of the same noise, the air volume is greatly increased, and the performance index of the wind system device is greatly improved; the centrifugal fan and the motor with the same structure and form, and the two centrifugal fans operate at the same time. Compared with the operation of a single fan, it achieves When the air volume is the same, the speed of the fan required by the wind system device is relatively low, the noise generated is relatively low, and energy consumption is reduced at the same time; the two air ducts are completely separated by a partition to avoid other noise and mixed flow caused by the blowing wind; The two air ducts flow in opposite directions to further avoid mixed flow and reduce noise; the use of a centrifugal volute with an Archimedes spiral reduces the occurrence of vortex on both sides of the volute and reduces the noise of the vortex. Make the air flow more smoothly, further reduce the total value of noise, and during the installation process, it can meet the requirements of narrow space and location, reduce the size of the whole machine, and save costs; the α angle of the volute can be adjusted according to different air volumes and noises , Improve the overall scope of application of the wind system device.

As mentioned above, a similar technical solution can be derived in combination with the content of the given solution. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the scope of the technical solutions of the present invention.

Claims (10)

1. A wind system device, comprising an air duct device, characterized in that: the air duct device is a double-connected centrifugal air duct, including two mutually fixed and integrated air ducts that can independently carry out wind circulation. A centrifugal fan is arranged in the air duct to provide air circulation. 2. A wind system device according to claim 1, characterized in that: the double-connected centrifugal air duct is an integrated structure, including two upper and lower fixing seats, a centrifugal volute, a centrifugal fan and a motor, The upper and lower ends of the centrifugal volute are fixedly installed with the upper and lower fixing seats respectively, and the middle part of the centrifugal volute is provided with a partition to separate the double-connected centrifugal air duct into two identical The air duct part, each of the air duct parts is installed with one of the centrifugal fan and the motor. 3. A wind system device according to claim 2, wherein the centrifugal volute has an Archimedes spiral. 4. A wind system device as claimed in claim 2, wherein an air outlet is opened on the centrifugal volute, and an air inlet is opened on the fixing seat, so as to realize air inlet on both sides, and is perpendicular to the air inlet. Wind direction out of the wind. 5. A wind system device as claimed in claim 4, characterized in that: the centrifugal volute has an air outlet on each air duct part, and the air outlet directions of the two air outlets are opposite, realizing The air enters from both sides, the wind is perpendicular to the air intake, and the wind is released from both sides in opposite directions. 6. A wind system device according to claim 2, characterized in that: the same centrifugal fan and motor are used in the two air duct parts. 7. A wind system device according to claim 2, characterized in that: the α angle of the centrifugal volute is between 10°-80°, and can be adjusted according to different air volumes and noises. 8. A wind system device according to claim 2, wherein the centrifugal fan adopts forward blades. 9. The wind system device according to claim 2, characterized in that: the β angle of the centrifugal fan is between 20°-90°. 10. An air cleaner, characterized in that the wind system device according to any one of claims 1 to 9 is installed inside the air cleaner.