CN103277327A - Variable-pitch bladeless fan turbine device - Google Patents

Abstract

The invention discloses a variable-pitch bladeless fan turbine device which comprises a fixing frame, a motor, a turbine and an upper cover plate, wherein a rotating shaft of the motor is connected with the inner side of the turbine and drives the turbine connected with the rotating shaft. The outer side of the turbine is arranged in a vortex ring, and a gap is reserved between the vortex ring and the turbine. The vortex ring is connected with the inner side wall of a base through the fixing frame, the upper cover plate is arranged in the base and connected with the fixing frame and covers one end of a non-output shaft of the motor, and the whole motor is located in a cavity formed by enclosing the fixing frame and the upper cover plate. A case is arranged at the top end of the base, and an air outlet ring is arranged on the case. Two ends of the base are in the shapes of open cylinders, and an air inlet is formed on the side wall at the bottom end of the base. Blades of the turbine are variable-pitch blades. By adopting the variable-pitch bladeless fan turbine device, vortex separation points of an outlet zone move towards the downstream on the condition of optimizing the overall aerodynamic performance of a bladeless fan, and pressure fluctuation on the periphery of blades, airflow non-uniformity, mechanism rotating noise and noise radiation are reduced.

Description

The irregular pitch formula does not have the blade fan turbine device

Technical field

The invention belongs to the fan technical field, relating in particular to the irregular pitch formula does not have the blade fan turbine.

Background technique

Conventional fan is directly to install blade on motor mostly, for security consideration, often going out the protective equipment that the solar or lunar halo place installs correspondence, plays the certain protection effect.But, still can not get rid of potential safety hazard, some children can put in finger and touch flabellum in the protective equipment because of curious blade, cause the generation of some accidents.And the conventional fan air-supply is nature not, easily causes uncomfortable.Flabellum also amasss full dust etc. easily.

For addressing the above problem, a kind of no blade fan appears at present on the market, and it is made up of the base of lower end and the solar or lunar halo that goes out of upper end.Although it is less not have the blade fan noise at present, we have caused ambient gas pressure pulsation when still finding the turbine rotation, cause the air-flow nonuniformity, have increased no blade fan rotational noise, have so not only wasted the energy but also have polluted environment.

Therefore, consider above-mentioned analysis, be badly in need of a kind of turbine that does not have blade fan of design, can guarantee to reduce turbine blade ambient gas pressure pulsation and influences such as air-flow nonuniformity and rotational noise increase under the whole aeroperformance optimization of the no blade fan situation.While has also been reduced the generation possibility of resonance, and then causes blade fatigue and the possibility reduction of fracture.

Summary of the invention

The objective of the invention is at the deficiencies in the prior art, provide a kind of irregular pitch formula not have the blade fan turbine device, can guarantee to overcome the pressure pulsation of turbine blade ambient gas and air-flow nonuniformity and rotational noise under the whole aeroperformance situation of no blade fan.

The present invention includes fixing frame, motor, turbine, upper cover plate, the rotating shaft of motor is connected with the inboard of turbine, and drives the turbine that is attached thereto; The turbine arranged outside leaves the gap with vortex ring in vortex ring; Vortex ring is connected with the pedestal madial wall by fixing frame, and upper cover plate is arranged in the pedestal, and is connected with fixing frame, covers an end of the non-output shaft of motor, makes whole motor in the chamber that fixing frame and upper cover plate surround; The pedestal top is provided with casing, and casing is provided with out solar or lunar halo; Pedestal is the cylindrical shape of both ends open, has intake opening on the sidewall of its bottom.

Turbine upper blade quantity odd and even number all can, be preferably odd number;

The circumferential angle of angle between turbine upper blade and the blade, under certain pitch compares variance ratio Q, adopt all different, or adopt the part angle inequality all can, but can be identical all; Described pitch compare variance ratio Q refer to the circumferential angle of irregular pitch formula adjacent blades and etc. the circumferential angle of pitch type adjacent blades difference with etc. the ratio of the circumferential angle of pitch adjacent blades, Q is smaller or equal to 15%, and is specific as follows:

Wherein,

Be fan blade quantity,

Be the angle between irregular pitch formula adjacent blades and the blade, i=1,2 ... n, expression angle number; Angle angle average when pitches such as 360 °/n is are arranged.

Beneficial effect of the present invention is as follows:

The present invention can optimize under the whole aeroperformance situation of no blade fan, makes the eddy current separation point of outlet area mobile downstream, has reduced the pulsation of blade ambient pressure, has weakened the air-flow nonuniformity, has reduced the rotational noise of mechanism, has weakened noise radiation.Because the relative change rate of pitch can not produce big influence to the blower fan aeroperformance within the specific limits, so can under pitch compares the less situation of variance ratio, select rational vanepiston to reach the best distribution mode according to performance requirement.Because of compare variance ratio and lobe numbers of its pitch also closely related, need choose rational number, make and also select for the design standard on the industry provides more parameter in even number and the selectable leeway of odd number of blades number average, widened the design alternative path that produces.

Description of drawings

Fig. 1 is irregular pitch formula turbine;

Fig. 2 is irregular pitch formula turbine and vortex ring;

Fig. 3 is apparatus of the present invention locations of structures schematic representation in no blade fan;

Fig. 4 is air motion schematic representation of the present invention;

Among the figure, turbine 1, vortex ring 2, fixing frame 3, upper cover plate 4, motor 5, pedestal 6, intake opening 7, casing 8, go out solar or lunar halo 9.

Embodiment

The invention will be further described below in conjunction with accompanying drawing.

As Fig. 2, shown in Figure 3, the irregular pitch formula does not have the blade fan turbine device, can guarantee to overcome the pressure pulsation of turbine blade ambient gas and air-flow nonuniformity and rotational noise under the whole aeroperformance situation of no blade fan.

The present invention includes fixing frame 3, motor 5, turbine 1, upper cover plate 4, the rotating shaft of motor 5 is connected with the inboard of turbine 1, and drives the turbine 1 that is attached thereto; Turbine 1 arranged outside and leaves the gap between the vortex ring 2 in vortex ring 2; Vortex ring 2 is connected with pedestal 6 madial walls by fixing frame 3, and upper cover plate 4 is arranged in the pedestal 6, and is connected with fixing frame 3, covers an end of motor 5 non-output shafts, makes whole motor in the chamber that fixing frame 3 and upper cover plate 4 surround; Pedestal 6 tops are provided with casing 8, and casing 8 is provided with out solar or lunar halo 9; Pedestal 6 is the cylindrical shape of both ends open, has intake opening 7 on the sidewall of its bottom.

Turbine 1 upper blade quantity odd and even number all can, be preferably odd number;

The circumferential angle of angle between turbine 1 upper blade and the blade, under certain pitch compares variance ratio Q, adopt all different, or adopt the part angle inequality all can, but can be identical all; Described pitch compare variance ratio Q refer to the circumferential angle of irregular pitch formula adjacent blades and etc. the circumferential angle of pitch type adjacent blades difference with etc. the ratio of the circumferential angle of pitch adjacent blades, Q is smaller or equal to 15%, and is specific as follows:

Wherein,

Be fan blade quantity,

Be the angle between irregular pitch formula adjacent blades and the blade, i=1,2 ... n, expression angle number; Angle angle average when pitches such as 360 °/n is are arranged.

As shown in Figure 4, among the figure as can be known air form pressure reduction by turbine 1 rotation, enter from inlet hole 7, enter pedestal 6 inside, flowing through relends the runner of air being flowed through on the upper cover plate 4 from pedestal 6 inside by turbine rotation and reaches out solar or lunar halo 9 between vortex ring 2 and the turbine 1, and wind blows out from going out solar or lunar halo.

The present invention rationally changes under pitch compares the less situation of variance ratio, controls more satisfactory at 15% time.And because the particularity of irregular pitch, the present invention can allow fan rationally choose and select even leaves for use, is not limited to fan and often selects odd number of blades for use under routine.

Embodiment 1

The turbine blade number is 8, and circumferentially the angle angle is along clockwise successively with 51 °, 39 °, and 51 °, 39 °, 51 °, 39 °, 51 °, 39 ° of distributions.As shown in Figure 1: the circumferential angle angle between A blade and the B blade is 51 °, and the circumferential angle between the rest blade then respectively is along clockwise direction: 39 °, and 51 °, 39 °, 51 °, 39 °, 51 °, 39 ° of distributions, thus get back to the A blade; So irregular pitch distributes, and frequency is produced modulating action, thereby play effective reduction rotational noise.The circumferential angle angle of blade also can adopt other suitable data simultaneously, but need rationally change under pitch compares the less situation of variance ratio, must control more satisfactory at 15% time.Because its nonsymmetry makes that the balance of fan is improved, the possibility of on-stream generation resonance reduces simultaneously.

The above only is the preferred embodiments of the present invention, and those skilled in the art should be known under the situation that does not break away from summary of the invention, can carry out various improvement and change to this invention.Therefore according to technical spirit of the present invention, concise and to the point modification or equivalence that the present invention is done change and various similar changes and improvements, all should be contained within the invention patent protection scope.

Claims (4)

1. the irregular pitch formula does not have the blade fan turbine device, it is characterized in that comprising fixing frame, motor, turbine, upper cover plate, and the rotating shaft of motor is connected with the inboard of turbine, and drives the turbine that is attached thereto; The turbine arranged outside leaves the gap with vortex ring in vortex ring; Vortex ring is connected with the pedestal madial wall by fixing frame, and upper cover plate is arranged in the pedestal, and is connected with fixing frame, covers an end of the non-output shaft of motor, makes whole motor in the chamber that fixing frame and upper cover plate surround; The pedestal top is provided with casing, and casing is provided with out solar or lunar halo; Pedestal is the cylindrical shape of both ends open, has intake opening on the sidewall of its bottom;

Described turbine blade is the irregular pitch formula.

2. irregular pitch formula as claimed in claim 1 does not have the blade fan turbine device, it is characterized in that turbine upper blade quantity odd and even number all can.

3. irregular pitch formula as claimed in claim 1 does not have the blade fan turbine device, it is characterized in that turbine upper blade quantity is odd number.

4. irregular pitch formula as claimed in claim 1 does not have the blade fan turbine device, it is characterized in that the angle of circumferential angle between turbine upper blade and the blade, adopts all differences under certain pitch compares variance ratio Q, or adopts the part angle inequality;

Described pitch compare variance ratio Q refer to the circumferential angle of irregular pitch formula adjacent blades and etc. the circumferential angle of pitch type adjacent blades difference with etc. the ratio of the circumferential angle of pitch adjacent blades, Q is smaller or equal to 15%, and is specific as follows:

Wherein,

Be fan blade quantity,

Be the angle between irregular pitch formula adjacent blades and the blade, i=1,2 ... n, expression angle number; Angle angle average when pitches such as 360 °/n is are arranged.

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