CN2406089Y - Turbine boosted fan - Google Patents

Abstract

The utility model relates to a turbocharger blower used for range hoods. Its structure includes a motor and a motor bracket, and a turbo fan and a supercharging turbo fan are fixedly installed at both ends of the output shaft of the motor; a two-stage turbine with multiple blades and a large torsion angle is adopted. The utility model adopts the working principle of the aviation turbine fan in design, solves the relationship between the noise and the air volume in the range hood, increases the air volume without increasing the noise, and the two-stage turbine ensures the wind pressure required by the range hood, thereby The range hood installed with the turbocharger fan fully meets the three indicators of the range hood.

Description

turbo blower

The utility model relates to a fan, in particular to the improvement of the fan structure for range hoods.

The range hoods sold in the market or the range hoods that take off all adopt the centrifugal fan structure. Because this kind of centrifugal suction fan will produce high wind pressure area and low wind pressure area during operation, when the impeller is working, there will be bias pressure generated by bias wind pressure, and this force always acts on the impeller, and then is transmitted from the impeller to the motor. Bearings, resulting in biased wear of the motor bearings. Therefore, the longer the range hood is used, the louder the noise will be. Another disadvantage is that the centrifugal fan cannot increase the suction volume under the limitation of the product volume of the range hood. There are three main indicators for evaluating range hoods, low noise, large suction volume, and easy cleaning. Due to the existing problems in the structure of the centrifuge in the existing range hood, the problem of noise and air volume of the range hood is solved at the expense of one another, and it is not possible to have both.

The purpose of this utility model is to overcome the shortcomings of the above-mentioned range hood centrifugal fan structure, improve the design principle, solve the relationship between noise and air volume, and provide a turbocharged fan with a new structure.

The purpose of this utility model is achieved in this way. The turbo blower includes a motor 3 and a motor support 4, and a turbo fan 5 and a supercharging turbo fan 2 are fixedly installed at both ends of the output shaft of the motor; a two-stage turbine with multiple blades and a large twist angle is adopted.

In the two-stage turbofan adopted in the utility model, the first stage is mainly used for air suction, and the second stage is mainly used for pressurized air exhaust. The two-stage turbine adopts a large number of blades, and the aerodynamic layout design structure with large twist angle and variable circulation volume ensures the high working efficiency of the two-stage turbine with one suction and one row. When in use, the secondary turbine is installed in the air casing 1 of the ducted range hood, the air pressure in the air casing is equal everywhere on the working level, there is no bias force, the air flow is smooth and smooth, and the motor works smoothly, so the working noise is also greatly reduced. The reduction is only 55 decibels, which is much lower than the standard of no more than 75 decibels for range hoods in our country. And because the utility model adopts two-stage turbines with multiple blades and large torsion angle, one suction and one row, the work rate of suction and exhaust is guaranteed, so the exhaust air volume is very large, theoretically up to 20m ³ /min.

The utility model reforms the design principle, adopts the working principle of the aviation turbofan, solves the relationship between the fan noise and the air volume in the existing range hood, increases the air volume without increasing the noise, and the two-stage turbine structure ensures The wind pressure required by the range hood, so that the range hood installed with the turbocharger fan fully meets the three indicators of the range hood. The utility model is applied in the air shell of the ducted range hood, as long as the motor bracket is removed, all parts in the air shell can be dismantled, and the cleaning is convenient.

Description of drawings:

1 air shell, 2 supercharged turbofan, 3 motor, 4 motor bracket, 5 turbofan.

Accompanying drawing 1 is the structural representation of the utility model.

Accompanying drawing 2 is the three-dimensional structure schematic diagram of the utility model.

Embodiment: A turbocharged blower includes a motor 3 and a motor bracket 4, and a turbofan 5 and a supercharging turbofan 2 are fixedly installed at both ends of the output shaft of the motor; a two-stage turbine with multiple blades and a large twist angle is used. The turbofan has 18 blades and the booster turbofan has 20 blades. During use, the secondary turbine is installed in the air casing 1 of the ducted range hood, and the motor support is fixed on the air casing.

Claims (2)

1, a kind of turbosupercharging blower fan includes motor (3) and electric machine support (4), it is characterized in that being installed with at the two ends of motor output shaft turbofan (5) and charging turbine fan (2); Adopt leafy number, big torsional angle two-stage turbine.

2, according to the described turbosupercharging blower fan of claim 1, it is characterized in that turbofan has 18 blades, the charging turbine fan has 20 blades.

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