CN201176967Y

CN201176967Y - Centrifugal blower fan flow guiding structure capable of producing uniform speed airflow of same direction

Info

Publication number: CN201176967Y
Application number: CNU2008200931978U
Authority: CN
Inventors: 魏高翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-14
Filing date: 2008-04-14
Publication date: 2009-01-07
Anticipated expiration: 2018-04-14

Abstract

The utility model relates to a diversion structure for a centrifugal fan which is capable of producing codirectional uniform-rate air current. The diversion structure comprises an impeller (10) and a turbine housing (20) arranged outside the impeller, wherein the turbine housing (20) comprises an arc-shaped duct plate (23) and end caps (21, 22) on the two sides of the duct plate. The diversion structure is characterized in that a vertical air outlet of the turbine housing (20) is extended horizontally from one end away from the impeller (10) to the other end near the impeller (10), and a diversion member (24) capable of gathering outgoing stray air current into codirectional uniform-rate air current is arranged at an air outlet on the vertical central line of the impeller or between the vertical central line of the impeller and one end of the impeller (10). The diversion structure can effectively improve the flow field of the centrifugal fan, increase the air supply of the fan, reduce system power consumption and fan noise, and prolong the service life of the centrifugal fan.

Description

Can produce in the same way the at the uniform velocity flow guide structure of the centrifugal blower of air-flow

[technical field]

The utility model relates to a kind of centrifugal blower, and especially a kind of energy produces in the same way the at the uniform velocity flow guide structure of the centrifugal blower of air-flow.

[background technique]

High-power centrifugal blower is quite extensive in industrial application, and its working method has two kinds: a kind of is open, does not promptly add any conducting element, and this mode has produced the discrete air-flow of centrifugal direction; Another kind of mode is to be added with volute, and this mode has produced air-flow equidirectional but variable speed.

In the industry be that the heat exchanger application that drives is the most extensive with the centrifugal blower, because blower fan is in a rectangular enclosure in the heat exchanger, therefore the centrifugal blower mounting type is open, its deficiency is: (1) is because the mounting type of centrifugal blower is open, and in rectangular enclosure, just certainly exist bigger resistance of air and turning resistance, also produced bigger air swirl noise simultaneously; (2) because the air-flow of heat exchanger must be realized the heat radiation purpose by heat exchanger core, and the structure of heat exchanger core is horizontal grid shape, therefore the high speed and high pressure air that provides by the blower fan heat exchange core of can not evenly flowing through, like this, dislocation has taken place and has intersected in the interior outer circulation main air flow of heat exchanger, heat exchange is insufficient, has influenced the heat dispersion of radiator greatly; (3) airflow direction that is produced by centrifugal blower is the centrifugal direction along the blower fan center, and air-flow can impact with the thin chip of trellis work when entering the heat exchange core, makes the heat exchange cored structure produce vibration, thus the bigger regeneration mechanical noise of generation; (4) because heat exchange core grid distance is less, and the air channel is narrow, so the impedance that this structure produces is bigger, most of dynamic pressure of adding air-flow loses in the ingress, so the air output of blower fan can be very limited.

[summary of the invention]

The utility model is intended to address the above problem, and provide a kind of can produce in the same way air-flow at the uniform velocity the flow guide structure of centrifugal blower, this flow guide structure can carry out effective rectification to discrete wind, thereby has improved the wind supply quantity of centrifugal blower, reduce system energy consumption and noise, and prolonged working life.

A kind of energy produces in the same way the at the uniform velocity flow guide structure of the centrifugal blower of air-flow, comprise impeller and the volute of being located at the impeller outside, this volute comprises arc air channel plate and air channel plate end covers at two sides, it is characterized in that, the vertical exhaust outlet of described volute extends horizontally to the other end near impeller by the end away from impeller, and at the exhaust outlet place the vertical center line of impeller or near vertical center line be the conducting element of air-flow at the uniform velocity in the same way near being provided with between the end of impeller the discrete air-flow of outflow led.

Described conducting element is at the vertical center line of impeller or near vertically being spaced a plurality of guide plates between a center line and the close end of impeller, air-flow path of formation between every two adjacent guide plates at the exhaust outlet place.

One end of a plurality of guide plates places on the elongation line with the corresponding to volute of radian of volute, and its other end then parallels with the vertical center line of impeller.

Described guide plate be by exhaust outlet to the bending of impeller direction arc plate.

An end cap of one side of a plurality of arc plates and volute is affixed, opposite side then with another end cap clamping.Structure of the present utility model can be applied to use the centrifugal blower air feed other all need the structure and the product of average rate, equidirectional air-flow.

The beneficial effect that technical solutions of the utility model are brought:

(1) the technical program has been improved the flow field of centrifugal blower, can guarantee that air quantity is constant or increase under the situation of air quantity air-flow equilibrium, equivalent and equidirectional outside output for centrifugal blower installs conducting element additional.(outer circulation main air amount inconsistent phenomenon in effectively correcting in the radiator heat-dissipation technology is used improves the hot cold wind contact of inside and outside circuit useful area, thereby has improved the integral heat sink performance of radiator)

(2) install circular arc lattice-shaped conducting element additional and can be effectively the air-flow dynamic pressure of centrifugal blower be converted to static pressure, improved the air displacement of blower fan.

(3) improved air velocity distribution after, the pneumatic noise that centrifugal blower produces also will decline to a great extent, under identical heat dissipation potential, the rotating speed of blower fan can descend to some extent, so the noise of fan generation itself also can descend.

(4) improved air velocity distribution after, the resistance of air of centrifugal blower descends, the power of fan also can descend, energy consumption descends, and can play good energy-saving effect aspect energy consumption.

(5) since the operation point of blower fan be optimized, install conducting element additional after, the working condition of blower fan makes moderate progress, the operating life that this has just prolonged blower fan has reduced the maintenance cost of centrifugal blower.

[description of drawings]

Fig. 1 is a front section view of the present utility model.

Fig. 2 is a stereogram of the present utility model.

Fig. 3 is the forward sight assembling exploded view of Fig. 2.

Fig. 4 is the backsight assembling exploded view of Fig. 2.

Fig. 5 is a schematic diagram of the present utility model, wherein the flow direction of arrow indication air-flow.

[embodiment]

The following example is to further explanation of the present invention and explanation:

Consult Fig. 1～Fig. 5, a kind of energy produces in the same way the at the uniform velocity flow guide structure of the centrifugal blower of air-flow, comprise impeller 10 and the volute 20 of being located at the impeller outside, this volute 20 by arc air channel plate 23 and plate both sides, air channel before,

rear end cover

21,22 form, volute 20 vertical exhaust outlets are extended horizontally to the other end 26 of close impeller 10 by the end 25 away from impeller 10, and at the exhaust outlet place near vertical center line be the conducting element 24 of air-flow at the uniform velocity in the same way near being provided with between the end of impeller 10 the discrete air-flow of outflow led, this conducting element 24 is at the vertical center line of impeller or near vertically being spaced a plurality of guide plates 241 between a center line and the close end of impeller 10, air-flow path 242 of formation between every two adjacent guide plates at the exhaust outlet place.One end of a plurality of guide plates 241 places on the elongation line with the corresponding to volute of radian of volute 20, and its other end then parallels with the vertical center line of impeller.Wherein guide plate be by exhaust outlet to the bending of impeller direction arc plate, a side of a plurality of arc plates and the rear end cover 22 of volute 20 are affixed, opposite side then with front cover 21 clampings.

Impeller 10 of the present utility model is received on the motor, and motor drives impeller 10 rotation produces air-flows, is vertical parallel airflow from what flowed out by the exhaust outlet away from an end of impeller 10, directly flows out in volute 20; What flow out from the exhaust outlet near an end of impeller 10 is discrete air-flow around impeller deflection, this part air-flow enters this conducting element 24, by conducting element 24 it is led and to be vertical parallel airflow, dredge and drainage at the air-flow of narrow ventilated port (this crowded air-flow causes airspeed not wait) because conducting element 24 will crowd originally, make that what flow out is at the uniform velocity parallel airflow from this centrifugal blower.

The utility model is used in heat exchanger, the discrete wind of centrifugal blower 10 is carried out effective rectification, can will disperse in the passage of the wind trellis work of dredging radiating core all measuring, all press by the grid water conservancy diversion spacing of adjusting this structure, effectively correct interior outer circulation main air amount inconsistent phenomenon, improved the heat dispersion of radiating core to greatest extent.

The utility model is not limited to above mode of execution, so long as the scheme of mentioning in the specification all can be implemented.

Claims

1, a kind of energy produces in the same way the at the uniform velocity flow guide structure of the centrifugal blower of air-flow, comprise impeller (10) and be located at the volute (20) of impeller outside, this volute (20) comprises arc air channel plate (23) and air channel plate end covers at two sides (21,22), it is characterized in that, the vertical exhaust outlet of described volute (20) extends horizontally to the other end near impeller (10) by the end away from impeller (10), and be positioned at the exhaust outlet place the vertical center line of impeller or near vertical center line be the conducting element of air-flow (24) at the uniform velocity in the same way near being provided with between the end of impeller (10) the discrete air-flow of outflow led.

2, energy as claimed in claim 1 produces in the same way the at the uniform velocity flow guide structure of the centrifugal blower of air-flow, it is characterized in that, described conducting element (24) is to be positioned at the vertical center line of impeller at the exhaust outlet place or near vertically being spaced a plurality of guide plates (241) between a center line and the close end of impeller (10), to form an air-flow path (242) between every two adjacent guide plates.

3, energy as claimed in claim 2 produces in the same way the at the uniform velocity flow guide structure of the centrifugal blower of air-flow, it is characterized in that, one end of a plurality of guide plates (241) places on the elongation line with the corresponding to volute of radian of volute (20), and its other end then parallels with the vertical center line of impeller.

4, the at the uniform velocity flow guide structure of the centrifugal blower of air-flow that can produce in the same way as claimed in claim 3 is characterized in that, described guide plate be by exhaust outlet to the bending of impeller direction arc plate.

5, the at the uniform velocity flow guide structure of the centrifugal blower of air-flow that can produce in the same way as claimed in claim 4 is characterized in that an end cap (22) of a side of a plurality of arc plates and volute (20) is affixed, opposite side then with another end cap (21) clamping.