CN201358960Y

CN201358960Y - Blade type diffuser and high-speed centrifugal blower therewith

Info

Publication number: CN201358960Y
Application number: CNU2009200630299U
Authority: CN
Inventors: 苏春模
Original assignee: Changsha Aerturbo Compressor Co Ltd
Current assignee: Changsha Aerturbo Compressor Co Ltd
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2009-12-09
Anticipated expiration: 2019-01-21

Abstract

The utility model discloses a blade type diffuser and a high-speed centrifugal blower therewith. The blade type diffuser comprises a drive element, a rotating ring and a plurality of blades, wherein the drive element drives the rotating ring to rotate in a reciprocating manner through a swing stem component, a plurality of transmission rods on the rotating ring are in tight one-to-one connection with the blades and drive the blades to rotate, and a limit component used for limiting the maximal rotation curvature of the rotating ring is arranged thereon. In the case of a flow change of the system, the utility model can ensure the high-speed centrifugal blower to drive the blades to rotate through the power elements and adjust the blades to corresponding blade inlet installation angles, so as to adapt to the changed working condition by changing the flow area of the airflow, thereby avoiding surging caused by severe disengagement of the airflow from the diffuser, and ensuring safe and stable operation of the blower within a wider performance range.

Description

Blade diffuser and with the high speed centrifugation blower of this Diffuser

Technical field

The utility model relates to a kind of centrifugal blower that is used for conveying gas, particularly relates to a kind of blade diffuser and with the high speed centrifugation blower of this Diffuser.

Background technique

Centrifugal blower is a kind of turbomachinery that is used for conveying gas.The function of Diffuser is that the impeller outlet air-flow is slowed down, and part kinetic energy is converted into the pressure energy.Existing Diffuser generally has vaneless diffuser and fixed vane diffuser, improve gas pressure thereby vaneless diffuser relies on increase Diffuser diameter that air-flow is slowed down, so physical dimension is big, the manufacture cost height, and floor space is big; The blade of fixed vane diffuser has fixing setting angle, when flowing into Diffuser, gas in the runner that diffuser vane constitutes, moves, because the interaction of air-flow and blade, reducing of airspeed is faster than vaneless diffuser, therefore the corresponding structure size is little, but the range of flow of suitable stable operation is narrower.

The model utility content

The purpose of this utility model is to provide that a kind of physical dimension is less relatively, the blade diffuser that is applicable to unsteady flow amount operating mode and with the high speed centrifugation blower of this Diffuser.

This blade diffuser that the utility model provides, comprise a driving element, a change, all multiple-blades, described driving element drives change by a fork member and does back and forth to rotate, there are many drive links and described blade to be fastenedly connected one to one in the described change, drive each blade rotation, have a bounding means to be used to limit the maximum rotation radian of change in the described change.

Described bounding means is the restraining groove in a position-limited lever and the change, and described position-limited lever one end is in described restraining groove, and the other end is fixed on the stationary ring.

The utility model provides the high speed centrifugation blower with above-mentioned Diffuser.

From the technological scheme of the utility model blade diffuser as can be seen, because its blade can rotate under the effect of driving element, and the amplitude of rotating is controlled by driving element, therefore its blade angle is adjustable, the regulating working conditions that can adapt to different flow, when this Diffuser is installed to the blower that formation the utility model provides in the high speed centrifugation blower, when pressure one timing, if the flow that system requirements provides changes, can drive blade rotation by driving element, transfer to the corresponding inlet established angle, the circulation area that changes air-flow is to adapt to the operating mode that has changed, thereby avoid air-flow in Diffuser, to take place seriously to break away from and cause surge, guarantee blower stable operation in than the range of flow of broad.The steady working condition of this blower is wide, compact structure, reliability height.

Description of drawings

Fig. 1 is the structural representation of the utility model blade diffuser.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the structural representation of the utility model high speed centrifugation blower.

Embodiment

Mode of execution one, this is a kind of mode of execution of the utility model blade diffuser, referring to Fig. 1-Fig. 2.

From Fig. 1 and Fig. 2 as can be seen the utility model blade diffuser have a driving element 1, fork member 2, change 3, all multiple-blades 4, a stationary ring 7.Fork member 2 is made of fork 21 and connecting rod 22, wherein fork 21 is connected with driving element 1, connecting rod 22 1 ends are connected with fork, the other end is connected with change 3, driving change 3 does back and forth to rotate, the maximum radian that rotates determines that by bounding means 5 bounding means 5 is made of a restraining groove 52 that is fixed in stationary ring 7 upper limit bars 51 and the change 3, and position-limited lever 51 stretches into the rotation radian of restriction change 3 in the restraining groove 52.Also have many drive links 6 in the change 3, each root drive link 6 is all fixedlyed connected with a blade 4, and each drive link 6 will drive corresponding blade rotation when change 3 is rotated, and reach the purpose of adjusting blade opening.Driving element 1 drives fork member 2 during work, and fork member 2 drives change 3 and then each blade 4 is rotated.

Mode of execution two, this is the mode of execution of the utility model high speed centrifugation blower, referring to Fig. 3, this centrifugal blower has been installed the utility model vane diffuser in the outlet of impeller 9 as can be seen from the figure, mounting type has two kinds, if the utility model blade diffuser has adopted stationary ring 7, then stationary ring 7 is fixed on the blower casing 8, if save stationary ring 7, then position-limited lever 52 directly is fixed on the casing spacing for change, the fork member stretches into to drive change in the blower casing and then drive blade does the aperture adjusting, and driving element 1 is outside the blower casing.

Claims

1, a kind of blade diffuser, it is characterized in that this Diffuser comprises a driving element (1), a change (3), all multiple-blades (4), described driving element (1) drives change (3) by a fork member (2) and does back and forth to rotate, there are many drive links (6) and described blade (4) to be fastenedly connected one to one in the described change (3), drive each blade (4) and rotate, have a bounding means (5) to be used to limit the maximum rotation radian of change (3) in the described change (3).

2, blade diffuser according to claim 1, it is characterized in that described bounding means (5) is the restraining groove (52) in a position-limited lever (51) and the change (3), described position-limited lever (51) one ends are in described restraining groove (52), and the other end is fixed on the stationary ring (7).

3, a kind of high speed centrifugation blower that has claim 1 or 2 described blade diffusers.