CN206017215U - A kind of centrifugal blower of rear portion air-out - Google Patents

Abstract

The utility model discloses a kind of centrifugal blower of rear portion air-out, including the support meanss of foursquare panel, the impeller located at panel rear, the motor for being connected to impeller central and the fixation motor, the air inlet of the face plate center is provided with the flow diverter in front of the impeller air inlet, it is characterised in that：The support meanss are made up of the support bar of annulus fixed plate and four bendings, the rearward end of the annulus fixed plate and the motor is fixed, support bar one end is fixed on the drift angle of the panel, the other end collects and is fixed in the annulus fixed plate, the utility model has transfer efficiency high, high flexibility, coordinates corresponding kuppe accomplish the advantage that blows backward.

Description

A kind of centrifugal blower of rear portion air-out

Technical field

The utility model is related to field of ventilation equipment, more particularly to a kind of centrifugal blower of air-out backward.

Background technology

Mainly by flow diverter, impeller, spiral case and diffuser composition, during fan operation, gas passes through existing centrifugal blower Flow diverter guide vane wheel, under the turning effort of impeller, gas pressure is raised, and gas is collected by spiral case and sends into diffusion Device, the air-flow that high speed and high pressure is sent by diffuser.

Existing centrifugal blower mainly has the disadvantage that：

Spiral case can cause larger loss, reduce the conveying air quantity of blower fan, and Volute Design causes the air-out wind of centrifugal blower To being fixed, flexibility is low, meanwhile, the blower fan for being provided with spiral case is difficult to accomplish to blow backward, even if it is achieved that efficiency also compares Relatively low, almost without practical value.

Utility model content

Problem to be solved in the utility model is to overcome the Volute Design energy loss of existing blower fan high, and flexibility is low, difficult To accomplish the shortcoming that blows backward.

The utility model is by following technical solution solving problems described above：

A kind of centrifugal blower of rear portion air-out, including foursquare panel, the impeller located at panel rear, is connected to impeller The motor at center and the bracing frame of the fixation motor, the porch of the face plate center is provided with positioned at the impeller air inlet The flow diverter in front, it is characterised in that：Support frame as described above is made up of the support bar of annulus fixed plate and four bendings, the annulus The rearward end of fixed plate and the motor is fixed, and described four support bar one end are fixed on the drift angle of the panel, and the other end converges Collection is fixed in the annulus fixed plate, and the external diameter of the annulus fixed plate is less than the diameter of the impeller.

Used as a kind of preferred version of the present utility model, the support bar of four bendings, by one section perpendicular to panel Vertical section, one section of inclination angle is 45 degree to 60 degree of tilting section, and one section of horizontal segment parallel to panel is constituted.

Used as a kind of preferred version of the present utility model, support frame as described above material can be metal material or engineering plastics material Matter.

Used as a kind of preferred version of the present utility model, the annulus fixed plate is provided with four bolts hole, the motor Rear end face is provided with four steps each other in 90 degree of arrangements, and there is on the step bolt mouth, the bolt mouth and institute The bolt hole that states in fixed plate is corresponding, is also additionally provided with a step with wire guide on the motor.

As a kind of preferred version of the present utility model, the flow diverter include one along at panel entry straight up The annular sidewall of extension, the bottom of the annular sidewall is an annulus circumferentially, and the annulus is provided with and panel Fixed bolt hole, the flow diverter are fixed with panel by bolt.

Used as a kind of preferred version of the present utility model, the entrance of the flow diverter is located at the combination of annulus and annular sidewall Locate as cambered surface, the cambered surface transits to the annulus from the inner wall smooth of the annular sidewall.

The utility model has the advantage of, under the occasion not required by wind direction and blast, e.g., compressor, boiler enter Wind apparatus etc., this centrifugal blower can accomplish the air quantity input of almost zero loss, improve air intake efficiency, coordinate different leading In the case of stream cover, various applicable situations are adapted to, flexibility is high, in the case where suitable kuppe is coordinated, Ke Yi Accomplish to convey after wind direction in the case of less energy loss.

Description of the drawings

Schematic diagrames of the Fig. 1 for the utility model preferred embodiment

Fig. 2 is the utility model flow diverter position schematic diagram

Fig. 3 is the utility model bracing frame schematic diagram

Fig. 4 is the utility model scheme of installation

Fig. 5 is motor schematic diagram of the present utility model

Wherein：1- panels, 2- annulus, 5- annular sidewalls, 6- support arms, 7- annulus fixed plates, 11- steps, 12- motors, 13- impellers, 3,4,8- bolt hole 9- bolt mouths

Specific embodiment

A kind of centrifugal blower of rear portion air-out, including foursquare panel 1, the impeller 13 located at panel rear, is connected to The motor 12 at 13 center of impeller and the bracing frame 6 of fixed motor 12, the porch at 1 center of panel is provided with positioned at the impeller 13 Flow diverter in front of air inlet, bracing frame 6 are made up of the support bar of annulus fixed plate 7 and four bendings, four of bracing frame 6 Brace is individually fixed at the bolt mouth 4 on four angles of the panel, and four support arms are upwardly extending perpendicular from panel 1 by one section Straight section, one section of inclination angle is 45 degree to 60 degree of tilting section, and one section of horizontal segment parallel to panel 1 finally comes together in and is fixed on In annulus fixed plate 7, annulus fixed plate 7 is fixed on the lower section of the support arm of bracing frame 6, institute with welding or bolted mode The diameter of the external diameter less than impeller of annulus fixed plate 7 is stated, in the present embodiment, after the external diameter of annulus fixed plate 7 and motor 12 End diameter is identical.

The air inlet of 1 center of panel is that a circular through hole, the center of circle of annulus fixed plate 7 are in the center of panel 1, Arranged in concentric circles is formed with annulus fixed plate 7, annulus fixed plate 7 is provided with four bolts hole 8, and the motor 12 is provided with mutually Between in 90 degree arrange four steps 11, be respectively equipped with a bolt mouth 9 on four steps 11, be additionally additionally provided with one The individual step with wire guide, bolt mouth 9 are corresponding with four bolts hole 8 in annulus fixed plate, and annulus fixed plate 7 is arranged on On four steps 11 and it is bolted, can so accomplishes that the surface of annulus fixed plate 7 is flushed with the rear end face of motor, no Only have and position-limiting action is installed, and profile is more attractive in appearance.

Flow diverter includes an annular sidewall 5 for being stretched out along 1 porch of panel straight up, the annular sidewall 5 Bottom is an annulus 2 circumferentially, and the annulus 2 is provided with bolt hole 3, and flow diverter is consolidated by bolt hole 3 with panel 1 Fixed, the entrance of flow diverter is located at the junction of annulus 2 and annular sidewall 5 for cambered surface, inner wall smooth mistake of the cambered surface from annular sidewall 5 Cross to annulus 2, the flow diverter serves the effect of wind-guiding drainage so that air inlet is more smoothly, improves intake efficiency, in drawing The cambered surface of stream device porch increases incoming air area, further increases intake efficiency.Impeller 13 is bolted motor 12 On.

When the centrifugal blower runs, the rotation of impeller 13 produces centrifugal force and throws away air, as air is thrown out of generation Extraneous air by flow diverter intake impeller 13, as a result of bracing frame as fixed structure, is not had around impeller by negative pressure There is stop, energy loss is little, can significantly improve the discharge quantity of fan of impeller, now wind does not have direction towards surrounding diffusion Property, can be used for the occasion for air quantity being required and wind direction and blast not being required, if necessary, can be in the centrifugal blower Outside adds guide housing so as to the occasion of the different use demands of satisfaction, specifically very high flexibility, particularly, the centrifugal blower Can by plus adaptation guide housing accomplish with less loss blow backward, compared to existing technology in the centrifugation wind with spiral case Machine, with higher flexibility, the advantage of more preferable transfer efficiency, while solve the blower fan with spiral case in prior art be difficult to Accomplish the shortcoming that blows backward.

Claims (7)

1. a kind of centrifugal blower of rear portion air-out, including foursquare panel (1), the impeller (13) located at panel rear, connects In the motor (12) and the bracing frame (6) of fixed motor (12) at impeller (13) center, the entrance at panel (1) center Place is provided with the flow diverter in front of the impeller (13) air inlet, it is characterised in that：Support frame as described above (6) is by annulus fixed plate (7) support bars of and four bendings are constituted, and the rearward end of annulus fixed plate (7) and the motor (12) is fixed, support bar One end is fixed on the drift angle of the panel, and the other end collects and is fixed on annulus fixed plate (7), the annulus fixed plate (7) diameter of the external diameter less than the impeller (13).

2. the centrifugal blower of rear portion air-out according to claim 1, it is characterised in that：The external diameter of the annulus fixed plate with The rearward end diameter of the motor is identical.

3. according to the centrifugal blower of the rear portion air-out described in claim 1, it is characterised in that：The support bar of four bendings, By one section of vertical section perpendicular to panel (1), one section of inclination angle is 45 degree to 60 degree of tilting section, and one section parallel to panel (1) Horizontal segment composition.

4. according to the centrifugal blower of the rear portion air-out described in claim 2, it is characterised in that set on annulus fixed plate (7) There are four bolts hole (8), motor (12) rear end face is provided with four steps (11) each other in 90 degree of arrangements, described Fixed bolt mouth (9) is provided with step (11),

Bolt mouth (9) are corresponding with the bolt hole (8) on annulus fixed plate (7), and the annulus fixed plate is arranged on It is fixed on four steps and by bolt；A step (10) with wire guide is also additionally provided with motor (12).

5. according to the centrifugal blower of the rear portion air-out described in claim 1, it is characterised in that support frame as described above (6) material is gold Category material or engineering plastics material.

6. according to the centrifugal blower of the rear portion air-out described in claim 2, it is characterised in that the flow diverter include one along The annular sidewall (5) that panel (1) air inlet is stretched out straight up, the bottom of annular sidewall (5) are circumferentially extending for one Annulus (2), annulus (2) are provided with the bolt hole (3) fixed with panel (1), and the flow diverter is by bolt and panel (1) fixed.

7. according to the centrifugal blower of the rear portion air-out described in claim 5, it is characterised in that the flow diverter entrance is located at annulus (2) and the junction of annular sidewall (5) is cambered surface, the cambered surface transits to described from the inner wall smooth of the annular sidewall (5) Annulus (2).