CN201407198Y

CN201407198Y - Mixed-flow fan

Info

Publication number: CN201407198Y
Application number: CN2009201383104U
Authority: CN
Inventors: 许刚
Original assignee: Tsann Kuen Zhangzhou Enterprise Co Ltd
Current assignee: Tsann Kuen Zhangzhou Enterprise Co Ltd
Priority date: 2009-05-07
Filing date: 2009-05-07
Publication date: 2010-02-17
Anticipated expiration: 2019-05-07
Also published as: JP3161003U; BRPI1004271A2

Abstract

The utility model discloses a mixed-flow fan which comprises a body, a motor and a mixed-flow impeller. The motor is fixedly arranged in the body; the mixed-flow impeller is connected with the motor and can be arranged in the body in a rotary and coaxial manner; and the motor is arranged in front of the mixed-flow impeller. Therefore, the heat generated by temperature increment of the motor can betaken away quickly by the rapid airflow in front of the mixed-flow impeller; and the problem of motor temperature increment can be well solved.

Description

A kind of mixed flow fan

Technical field

The utility model relates to a kind of fan, particularly relates to a kind of mixed flow fan.

Background technique

Fan is owing to have effects such as accelerating gas flows, ventilation, heat radiation, stirring, and therefore application is very extensive, for example ventilation electric fan or blower fan.Existing fan is divided into axial flow and centrifugal two classes, and this two classes fan all comprises a body, an impeller and a motor, and this motor is installed within the body and connects impeller, freely rotates within body with impeller.Among the existing fan, this motor all is to be connected after the impeller.Because motor is located at after the impeller, and the air current flow speed before the impeller is fast, and the air current flow speed after the impeller is slow, and therefore slow air-flow can't be taken away the heat energy that motor heats up and brought fast, can't improve the motor intensification problem that solves.

The model utility content

The utility model provides a kind of mixed flow fan, and it has overcome, and existing fan is existing can't to improve the deficiency that solves the electric machine temperature rise problem.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of mixed flow fan, it comprises:

One body;

One motor, it is installed within the body; And

One mixed flow impeller, its connect motor and can be rotationally, be positioned within the body coaxially, and this motor is positioned at before the mixed flow impeller.

In the utility model one preferred embodiment, this body, it comprises a back cover, a front shroud and a coaxial fluid director that is fixed between back cover and the front shroud; This mixed flow impeller is positioned within the back cover, and this motor is fixed in fluid director.

In the utility model one preferred embodiment, this mixed flow impeller, it comprises that a wheel hub and some even compartment of terrains are installed in the rotor blade outside the wheel hub, and the front of this wheel hub is the plane, and back side curve is a parabola.

In the utility model one preferred embodiment, the blade profile of this rotor blade is the bent arc aerofoil profile of uniform thickness.

In the utility model one preferred embodiment, this rotor blade curve is the logarithm involute.

In the utility model one preferred embodiment, this rotor blade be projected as proclined.

In the utility model one preferred embodiment, the established angle of this rotor blade is the 30-40 degree, and spatial warping is-the 11--7 degree.

In the utility model one preferred embodiment, this fluid director, it comprises that an overcoat, an interior cover and some even compartment of terrains are installed in the stator blade that plays the water conservancy diversion leading role between overcoat and the interior cover.

In the utility model one preferred embodiment, the blade profile of this stator blade is the bent arc aerofoil profile of uniform thickness.

In the utility model one preferred embodiment, this front shroud is the big preceding little round platform body in back.

The technical program is compared with background technique: because motor is positioned at before the mixed flow impeller, the quick air-flow before the mixed flow impeller can be taken away the heat energy that motor heats up fast, can improve the motor intensification problem that solves.Owing to be provided with fluid director before the mixed flow impeller, fluid director can carry out the water conservancy diversion guiding to the air-flow that has the high static pressure of high speed after quickening through mixed flow impeller, can transfer static pressure to dynamic pressure, can increase substantially the working efficiency of this mechanism, flow spiral is flowed out forward at a high speed, make flow spiral output angle of flare little, high directivity, thus reach the purpose of far jet distance.Because impeller is mixed flow impeller, adopted on the impeller in centrifugal and axial flow mixed flow working principle between the two, it is big therefore to reach flow, blast height, the purpose of design of far jet distance.Owing to this front shroud is the greatly preceding little round platform body in back, become the convergence type to design, it and fluid director form reasonable flow channel, under the mixed flow impeller acting in conjunction, flow spiral high speed and high pressure are exported, and the air-flow diffusivity is little, and target is strong.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the schematic perspective view of the mixed flow fan of the utility model one preferred embodiment.

Fig. 2 is the perspective exploded view of the mixed flow fan of the utility model one preferred embodiment.

Fig. 3 is the schematic perspective view of mixed flow impeller of the mixed flow fan of the utility model one preferred embodiment.

Fig. 4 is the plan view of impeller of the mixed flow fan of the utility model one preferred embodiment.

Fig. 5 is the plan view of impeller of the mixed flow fan of the utility model one preferred embodiment.

Label declaration: back cover 100, mixed flow impeller 200, fluid director 300, motor 400, front shroud 500, overcoat 310, interior cover 320, stator blade 330, jointing base 321, wheel hub 210, rotor blade 220.

Embodiment

Please refer to Fig. 1 and Fig. 2, a kind of mixed flow fan, its back cover 100, a mixed flow impeller 200, a fluid director 300, a motor 400 and a front shroud 500.

100 one-tenth cylinder bodies of this back cover, and the rear port of this cylinder body becomes outer imperial palace guiding turning surface little, that play the afflux effect.After motor operation, the effect of this back cover 100 is effects of protective housing and slip ring, especially slip ring, leads mouthful and the including of impeller, and glibly air-flow is sucked the leaf road.

This fluid director 300, it comprises 320 and five stator blades 330 of an overcoat 310, one interior cover.Those stator blades 330 are fixed between overcoat 310 and the interior cover 320, and evenly arrange at interval.Should form a jointing base 321 within the interior cover 320.Among the present embodiment, this stator blade 330 is arranged to helical blade, but not as limit, also can be set to the bent arc aerofoil profile of uniform thickness, dihedral vane or logarithm involute blade, its objective is that the air-flow that is used for having the high static pressure of high speed after quickening through mixed flow impeller 200 carries out the water conservancy diversion guiding, flows out its spiral at a high speed forward.

Little round platform body before 500 one-tenth backs of this front shroud are big.

Overcoat 310 coaxial being fixed between front shroud 300 and the back cover 100 of above-mentioned fluid director 300, thus back cover 100, fluid director 300 and front shroud 500 are fixed together, to form body.

Jointing base 321 in this motor 400 is installed within the cover 320, and this motor 400 has a pto.

Please refer to Fig. 3, Fig. 4 and Fig. 5, this mixed flow impeller 200, it does work to air-flow, makes its Normal direction along blade curve tangent line quicken to flow out.It comprises that a wheel hub 210 and five even compartment of terrains are installed in the rotor blade 220 of side face outside the wheel hub 210 this mixed flow impeller 200, and this wheel hub 210 and five rotor blades 220 are one-body molded.Among the present embodiment: the blade profile of this rotor blade 220 is the bent arc aerofoil profile of uniform thickness, and bend factor is K=1.12-0.68; Being projected as of this rotor blade 220 is efficient, the proclined of low noise, maximum top rake A=11 degree; These rotor blade 220 established angles are the B=35 degree; These rotor blade 220 spatial warpings are the C=-9 degree; This hub ratio E=0.42; These rotor blade 220 curves are the logarithm involute; These wheel hub 210 fronts are plane 211, and back side curve is a parabola.This impeller performance curve is mild, the operating mode bandwidth, and applicability is wide.Mixed flow impeller 200 flows of present embodiment are big, and the blast height is an example with 10 cun for example, and flow can reach 1550-1800 cubic meters/hour, and blast can reach 160-220Pa.

Please refer to Fig. 1 and Fig. 2, the pto of above-mentioned motor 400 connects wheel hub 210, with location mixed flow impeller 200, rotates to drive mixed flow impeller 200.Among the present embodiment, this motor 400 is located at before the mixed flow impeller 200, and this mixed flow impeller 200 is positioned within the back cover 100.

The mixed flow fan of present embodiment owing to can produce powerful blast and powerful air quantity, therefore can be applicable to the ventilation that dries up, takes a breath of family, office, industrial and mining enterprise, especially can be as the air-conditioning companion, with equalization temperature, energy saving, and play environmental protection and healthy effect.

The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. mixed flow fan, it is characterized in that: it comprises:

One body;

One motor is installed within the body; And

One mixed flow impeller connects motor and also can be positioned within the body rotationally, coaxially, and this motor is positioned at before the mixed flow impeller.

2. a kind of mixed flow fan according to claim 1 is characterized in that: this body, and it comprises a back cover, a front shroud and a coaxial fluid director that is fixed between back cover and the front shroud; This mixed flow impeller is positioned within the back cover, and this motor is fixed in fluid director.

3. a kind of mixed flow fan according to claim 2 is characterized in that: this mixed flow impeller, and it comprises that a wheel hub and some even compartment of terrains are installed in the rotor blade outside the wheel hub, and the front of this wheel hub is the plane, and back side curve is a parabola.

4. a kind of mixed flow fan according to claim 3 is characterized in that: the blade profile of this rotor blade is the bent arc aerofoil profile of uniform thickness.

5. a kind of mixed flow fan according to claim 3 is characterized in that: this rotor blade curve is the logarithm involute.

6. a kind of mixed flow fan according to claim 3 is characterized in that: this rotor blade be projected as proclined.

7. a kind of mixed flow fan according to claim 3 is characterized in that: the established angle of this rotor blade is the 30-40 degree, and spatial warping is-the 11--7 degree.

8. a kind of mixed flow fan according to claim 2 is characterized in that: this fluid director, it comprises that an overcoat, an interior cover and some even compartment of terrains are installed in the stator blade that plays the water conservancy diversion leading role between overcoat and the interior cover.

9. a kind of mixed flow fan according to claim 8 is characterized in that: the blade profile of this stator blade is the bent arc aerofoil profile of uniform thickness.

10. a kind of mixed flow fan according to claim 2 is characterized in that: this front shroud is the big preceding little round platform body in back.