CN210509746U

CN210509746U - Novel fixed-outer-diameter volute used on diffuser

Info

Publication number: CN210509746U
Application number: CN201921474402.XU
Authority: CN
Inventors: 方祥军; 韩鹰; 任鹏; 王斌; 王一川
Original assignee: Hangzhou Liborai Aviation Technology Co Ltd
Current assignee: Hangzhou Liborai Aviation Technology Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-05-12
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a decide novel spiral case of external diameter for on diffuser, including spiral case main part and spiral case lid, the pot lid is fixed in the inside of spiral case main part, its characterized in that: the volute cover comprises an inner side face, an outer side face and an air inlet, an air flow channel is formed between the inner side face, the outer side face and the volute body, a flow guide pipe is mounted on the volute body, an air outlet is formed in the flow guide pipe, the air flow channel connects the air inlet and the air outlet, the cross section of the inner diameter and the cross section of the outer diameter of the volute body are circular and are the same circle center, the air flow channel is provided with a starting point and an end point, the cross section area of the air flow channel is gradually increased in a certain geometric shape from the starting point to the end point, the shape of the cross section is kept unchanged, the fixed outer diameter of the volute is set through the arrangement, the overall size of the volute is reduced, the.

Description

Novel fixed-outer-diameter volute used on diffuser

Technical Field

The utility model relates to a decide novel spiral case of external diameter for on diffuser.

Background

The diffuser is divided into two categories of a vaned diffuser and a vaneless diffuser, and the working principle of the diffuser is to convert speed energy into pressure energy by utilizing the difference of flow cross sections. The vane diffuser either limits the flow direction of the gas flow by the shape of the vanes, thereby shortening the overall structural size of the diffuser passage. The existing diffuser is basically designed in a fixed inner diameter mode, an airflow channel is horizontally and spirally arranged around an air inlet, and a shell of the diffuser is arranged along the airflow channel, so that volutes of the diffuser are increased to ensure a certain diffusion effect, the volume of the manufactured diffuser is large as a whole, the space is difficult to be well utilized, and the diffuser is difficult to install and use in many occasions; there is a need for improvements to existing diffusers that facilitate installation and use of diffusers.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a compact structure, whole small, the gas flow state is good, and the flow loss is little, installation and convenient to use have practicality and use extensive be used for the novel spiral case of deciding the external diameter on the diffuser.

In order to solve the above problem, the utility model adopts the following technical scheme:

the utility model provides a decide novel spiral case of external diameter for on diffuser, includes spiral case main part and spiral case lid, and the pot lid is fixed in the inside of spiral case main part, spiral case lid includes medial surface, lateral surface and air inlet, forms an airflow channel between medial surface, lateral surface and the spiral case main part, install the honeycomb duct in the spiral case main part, be equipped with the gas outlet in the honeycomb duct, airflow channel connects air inlet and gas outlet, the internal diameter of spiral case main part, external diameter cross section are circular and be same centre of a circle, airflow channel is equipped with starting point and terminal point, and airflow channel's cross-sectional area is certain geometric shape crescent by starting point to terminal point to keep the cross sectional shape unchangea.

Preferably, the guide pipe is arranged along the outer side of the volute body in the radial direction, and the air outlet is over against the end point of the airflow channel.

Preferably, the airflow channel spirally surrounds the volute cover for one circle.

Preferably, the starting point and the end point of the air flow channel are on the same vertical plane.

Preferably, the outer side edge of the airflow channel is folded inwards in a certain radian.

Preferably, the highest point and the lowest point of the airflow channel are on the same vertical plane.

The utility model has the advantages that:

firstly, the airflow channel is spirally arranged along the vertical direction of the air inlet of the volute cover, so that the space occupation of the airflow channel is reduced, and the whole volume of the diffuser is reduced.

And the cross section of the airflow channel is changed in a geometric shape, so that the phenomenon of single-side expansion in the prior art is changed, and the positions of the large cross section and the small cross section are reasonably arranged, so that the structure is more compact, and the reduction of the whole volume of the diffuser is realized.

Thirdly, the airflow channel is smooth as a whole, the airflow state is good, the flow loss is small, and the practicability is strong.

And fourthly, the outer diameter is the same, the structure is more attractive, and the design, the installation and the use are convenient.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, but the scope of the present invention is not limited thereto.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the worm cover of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic view of the main structure of the volute of the present invention;

FIG. 5 is a schematic side view of the volute body of the present invention;

FIG. 6 is a schematic view of the position of the airflow channel of the present invention;

the volute comprises a volute body 1, a volute cover 2, an air inlet 3, an air outlet 4, an inner side face 5, an outer side face 6, an air flow channel 7, a flow guide pipe 8, a starting point 9 and an end point 10.

Detailed Description

Referring to fig. 1 to 6, the novel volute with the fixed outer diameter for the diffuser includes a volute body 1 and a volute cover 2, the cover 2 is fixed inside the volute body 1, the volute cover 2 includes an inner side surface 5, an outer side surface 6 and an air inlet 3, an air flow channel 7 is formed between the inner side surface 5, the outer side surface 6 and the volute body 1, a flow guide pipe 8 is installed on the volute body 1, an air outlet 4 is arranged in the flow guide pipe 8, the air inlet 3 and the air outlet 4 are connected by the air flow channel 7, the cross sections of the inner diameter and the outer diameter of the volute body 1 are circular and are the same circle center, the air flow channel 7 is provided with a starting point 9 and a terminal point 10, the cross section area of the air flow channel 7 is gradually increased from the starting point 9 to the terminal point.

The flow guide pipe 8 is arranged along the radial direction of the outer side of the volute body 1, and the air outlet 4 is over against the end point 10 of the airflow channel 7.

The airflow channel 7 spirally surrounds the volute cover for a circle.

The starting point 9 and the end point 10 of the air flow channel 7 are in the same vertical plane.

The outer edge of the airflow channel 7 is folded inwards in a certain radian.

The highest point and the lowest point of the airflow channel 7 are on the same vertical plane.

The utility model discloses during the use, be connected diffuser and motor, drive impeller through the motor and rotate, make gas get into the inside of spiral case by the air inlet, rethread spiral case inside blade's water conservancy diversion effect, make gas flow by the air current passageway and discharge through the gas outlet, gas is when passing through the air current passageway, because the cross-sectional area of air current passageway increases gradually, makes the velocity of flow of gas slow down, can convert gaseous speed into static pressure ability, reaches the effect of using; the gas flow-guiding device has the advantages of compact structure, small integral volume, good gas flow state, small flow loss, convenient installation and use, practicability and wide application.

The design and manufacture of the volute cover and the airflow channel of the utility model are based on the inner and outer diameters of the volute main body.

The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a decide novel spiral case of external diameter for on diffuser, includes spiral case main part and spiral case lid, and the pot lid is fixed in the inside of spiral case main part, its characterized in that: the volute cover comprises an inner side face, an outer side face and an air inlet, an air flow channel is formed between the inner side face and the outer side face and the volute body, a flow guide pipe is mounted on the volute body, an air outlet is formed in the flow guide pipe, the air flow channel connects the air inlet and the air outlet, the cross sections of the inner diameter and the outer diameter of the volute body are circular and are the same circle center, the air flow channel is provided with a starting point and an end point, the cross section area of the air flow channel is gradually increased from the starting point to the end point in a certain geometric shape.

2. The novel volute with the fixed outer diameter for the diffuser of claim 1, wherein: the guide pipe is arranged along the outer side of the volute body in the radial direction, and the air outlet is over against the end point of the airflow channel.

3. The novel volute with the fixed outer diameter for the diffuser of claim 1, wherein: the airflow channel spirally surrounds the worm cover for a circle.

4. The novel volute with the fixed outer diameter for the diffuser of claim 1, wherein: the starting point and the end point of the airflow channel are on the same vertical plane.

5. The novel volute with the fixed outer diameter for the diffuser of claim 1, wherein: the outer side edge of the airflow channel is folded inwards in a certain radian.

6. The novel volute with the fixed outer diameter for the diffuser of claim 1, wherein: the highest point and the lowest point of the airflow channel are positioned on the same vertical plane.