CN214617212U - Fan volute - Google Patents
Fan volute Download PDFInfo
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- CN214617212U CN214617212U CN202120356493.8U CN202120356493U CN214617212U CN 214617212 U CN214617212 U CN 214617212U CN 202120356493 U CN202120356493 U CN 202120356493U CN 214617212 U CN214617212 U CN 214617212U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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Abstract
The utility model discloses a fan volute, which comprises two symmetrically arranged flow guide shells, wherein a holding cavity is arranged in each flow guide shell; an air outlet is formed in the opening of the flow guide shell; the flow guide shell consists of a volute bottom plate, a coaming and an air outlet which are integrally formed; the side edge of the surrounding plate connected with the volute bottom plate is a first curve section, and the side edge far away from the volute bottom plate is a second curve section; the linear distance between the two ends of the first curve section is equal to the inner diameter of the air outlet; an arc curve section is formed among the first curve section, the second curve section and the air outlet part; the diameter of the arc curve section is equal to the inner diameter of the air outlet. The utility model discloses a make holding intracavity wall and air outlet portion inner wall junction form the circular arc of no drop and connect the face to the arbitrary cross-sectional area of holding chamber to the air outlet remains unchanged, makes the air-out smooth and easy, has promoted the air-out effect, the vortex and the noise that have significantly reduced because of air-out distinguished and admirable striking inner wall produces.
Description
Technical Field
The utility model relates to a ventilation equipment technical field especially relates to a fan spiral case.
Background
In the volute used for ventilation equipment such as a smoke engine and the like in the prior art, the joint of an air outlet and the inner wall of a diversion shell is in non-circular arc or nonlinear transition, namely the inner diameter of the air outlet is smaller than that of the joint of the diversion shell and the air outlet, so that a fall connecting surface is formed at the joint of the inner wall of the diversion shell and the air outlet; the drop connecting surface blocks most of the air outlet quantity, so that the air outlet is not smooth, and the air outlet effect is influenced; meanwhile, the air flow of the outlet air impacts the drop connecting surface to generate vortex and noise.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a fan spiral case, through the structure setting to bounding wall and air outlet portion and spiral case floor junction, make holding intracavity wall and air outlet portion inner wall junction form the circular arc of no drop and connect the face to the arbitrary cross-sectional area of holding chamber to the air outlet remains unchanged, makes the air-out smooth and easy, has promoted the air-out effect, has significantly reduced because of vortex and the noise that air-out wind stream striking inner wall produced.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a fan volute comprises two symmetrically arranged flow guide shells, wherein an accommodating cavity is formed in each flow guide shell; an air outlet is formed in the opening of the flow guide shell; the air outlet is communicated with the accommodating cavity;
the flow guide shell consists of a volute bottom plate, a coaming and an air outlet which are integrally formed; the volute bottom plate is circular;
the side edge of the surrounding plate connected with the volute bottom plate is a first curve section, and the side edge far away from the volute bottom plate is a second curve section;
taking the front view of the diversion shell as the view direction, the endpoint of the first curve section above the air outlet is a first endpoint a1, and the endpoint below the air outlet is a second endpoint a 2; the linear distance between the first end point a1 and the axis of the volute bottom plate is a first linear distance L1; the linear distance between the second end point a2 and the axis of the volute bottom plate is a second linear distance L2; the second linear distance L2 is 0.68 times the first linear distance L1;
taking the front view of the flow guide shell as a view direction, an end point of the second curve section below the air outlet is a fourth end point b2, and a linear distance between the fourth end point b2 and an axis of the volute bottom plate is a third linear distance L3; the end point of the second curve section above the air outlet is a third end point b1, and the linear distance between the third end point b1 and the axis of the volute bottom plate is a fourth linear distance L4; the third linear distance L3 is 0.48 times the fourth linear distance L4; the third linear distance L3 is equal to the second linear distance L2;
the linear distance between the third end point b1 and the fourth end point b2 is equal to the inner diameter of the air outlet part;
the arc curve segment formed by the first end point a1 and the third end point b1 is a first arc curve segment x1, and the first arc curve segment x1 is coaxial with the air outlet; the diameter of the first arc curve segment x1 is equal to the inner diameter of the air outlet.
Preferably, the front view of the flow guide shell is taken as the view direction, and the intersection point of the first curve segment and the second curve segment is a first intersection point Q; the first intersection point Q and the first end point a1 and the first intersection point Q and the third end point b1 form a second circular arc curve segment x2 and a third circular arc curve segment x3, respectively; the included angle between the second arc curve segment x2 and the third arc curve segment x3 is a first included angle c 1; the first included angle c1 gradually increases towards the air outlet part;
the area formed between the first circular arc curve segment x1 and the second circular arc curve segment x2 and the third circular arc curve segment x3 is a circular arc spherical surface; the connecting part of the arc spherical surface and the inner wall of the air outlet part is an arc surface.
Preferably, the volute bottom plate is provided with an air inlet, and an air inlet grid protruding outwards is arranged on the air inlet.
Preferably, the inner diameter of the air inlet is 0.6-0.8 times of the inner diameter of the air outlet.
Preferably, a convex rib extending from one end to the other end is arranged on the side face, away from the volute bottom plate, of one of the enclosing plates, and a groove extending from one end to the other end is arranged on the side face, away from the volute bottom plate, of the other enclosing plate; when the two diversion shells are combined, the convex ribs are clamped in the grooves.
Preferably, the outer sides of the lateral surfaces, far away from the volute bottom plate, of the two enclosing plates are respectively provided with a connecting part, and the connecting parts are provided with threaded holes.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a through to the structure setting of bounding wall and air outlet portion and spiral case floor junction, make holding intracavity wall and air outlet portion inner wall junction form the circular arc of no drop and connect the face to the arbitrary cross-sectional area of holding chamber to the air outlet remains unchanged, makes the air-out smooth and easy, has promoted the air-out effect, has significantly reduced because of vortex and the noise that air-out wind current striking inner wall produced.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic perspective view of the middle diversion shell of the present invention;
fig. 3 is another schematic perspective view of the flow guide housing of the present invention;
fig. 4 is a front view of the middle deflector shell of the present invention;
FIG. 5 is a schematic view of the cross-sectional structure A-A of FIG. 1;
FIG. 6 is an enlarged view of a portion of FIG. 5 at B;
wherein: the air guide device comprises a flow guide shell 1, an accommodating cavity 2, an air outlet 3, an air inlet 4, an air inlet grid 5, a convex rib 6, a groove 7, a connecting part 8, a volute bottom plate 11, a coaming 12, an air outlet part 13, a first curve section 111 and a second curve section 112.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1-6, a blower volute comprises two symmetrically arranged flow guide shells 1, wherein an accommodating cavity 2 is arranged inside the flow guide shell 1; an air outlet 3 is arranged at the opening part of the diversion shell 1; the air outlet 3 is communicated with the accommodating cavity 2; the two diversion shells 1 are detachably connected.
As shown in fig. 2-4, the guide casing 1 is composed of a volute bottom plate 11, a coaming 12 and an air outlet 13 which are integrally formed; the volute bottom plate 11 is circular; the flow guide shell 1 is molded and integrally formed.
As shown in fig. 2 and 3, the side of the shroud plate 12 connected to the volute bottom plate 11 is a first curved section 111, and the side away from the volute bottom plate 11 is a second curved section 112.
As shown in fig. 4, taking the front view of the diversion housing 1 as the view direction, the endpoint of the first curve segment 111 above the air outlet 3 is a first endpoint a1, and the endpoint below the air outlet 3 is a second endpoint a 2; the linear distance between the first end point a1 and the axis of the volute bottom plate 11 is a first linear distance L1; the linear distance between the second end point a2 and the axis of the volute bottom plate 11 is a second linear distance L2; the second linear distance L2 is 0.68 times the first linear distance L1; through the structural arrangement, the joint of the first curve section 111 and the volute bottom plate 11 is in arc-shaped transition, and the arc-shaped structure can reduce the impact of the air outlet flow and the inner wall of the accommodating cavity 2, reduce the loss of the air volume and effectively improve the air speed.
As shown in fig. 4, taking the front view of the diversion housing 1 as the view direction, the end point of the second curved section 112 below the air outlet 3 is a fourth end point b2, and the linear distance between the fourth end point b2 and the axis of the volute bottom plate 11 is a third linear distance L3; the end point of the second curved section 112 above the air outlet 3 is a third end point b1, and the linear distance between the third end point b1 and the axis of the volute bottom plate 11 is a fourth linear distance L4; the third linear distance L3 is 0.48 times the fourth linear distance L4; the third linear distance L3 is equal to the second linear distance L2; through the arrangement of the structure, the cross sectional area from the accommodating cavity 2 to the air outlet part 13 is gradually increased, and the air outlet volume is improved.
The linear distance between the third end point b1 and the fourth end point b2 is equal to the inner diameter of the air outlet part;
the arc curve segment formed by the first end point a1 and the third end point b1 is a first arc curve segment x1, and the first arc curve segment x1 is coaxial with the air outlet; the diameter of the first arc curve segment x1 is equal to the inner diameter of the air outlet.
In this embodiment, the linear distance between the third end point b1 and the fourth end point b2 is equal to the inner diameter of the air outlet, the first arc curved segment x1 is coaxially arranged with the air outlet, and the diameter of the first arc curved segment x1 is equal to the inner diameter of the air outlet; thereby ensure that the internal diameter size of holding chamber 2 and the junction of air outlet portion 13 equals with the internal diameter size of air outlet portion, make holding chamber 2 and the junction of air outlet portion 13 can be smooth, do not have the fracture surface and be connected with the inner wall of air outlet portion 13.
Further, taking the front view of the flow guide shell as a view direction, and taking the intersection point of the first curve segment and the second curve segment as a first intersection point Q; the first intersection point Q and the first end point a1 and the first intersection point Q and the third end point b1 form a second circular arc curve segment x2 and a third circular arc curve segment x3, respectively; the included angle between the second arc curve segment x2 and the third arc curve segment x3 is a first included angle c 1; the first included angle c1 gradually increases towards the air outlet part; the cross-sectional area from the accommodating cavity 2 to the air outlet part 13 is gradually increased, and the air outlet volume is increased.
The area formed between the first circular arc curve segment x1 and the second circular arc curve segment x2 and the third circular arc curve segment x3 is a circular arc spherical surface; the joint of the arc spherical surface and the inner wall of the air outlet part is an arc surface; the structure of the arc surface can reduce the impact of the air outlet flow and the inner wall of the accommodating cavity 2, reduce the loss of the air quantity, reduce the noise and eliminate the vortex.
In this embodiment, through the structure setting to the junction of the coaming 12 and the air outlet 13 and the volute floor 11, the junction of the inner wall of the accommodating chamber 2 and the inner wall of the air outlet 13 forms a circular arc connecting surface without a fall, so that the arbitrary cross-sectional area from the accommodating chamber 2 to the air outlet 3 is kept unchanged, the air outlet is smooth, the air outlet effect is improved, and the vortex and the noise generated by the air outlet flow impacting the inner wall are greatly reduced.
Further, as shown in fig. 1-5, an air inlet 4 is formed in the volute bottom plate 11, and an air inlet grid 5 protruding outward is arranged on the air inlet 4; during the use, the water conservancy diversion casing 1 combination that two symmetries set up is as an organic whole, sets up air inlet grid 5 through two symmetries, can promote the air inlet amount of wind and intensity to evenly cut the air inlet into a plurality of air current through the grid and get into holding chamber 2 in, reduce the appearance of vortex.
Furthermore, the internal diameter size of air intake 4 is 0.6 ~ 0.8 times of the internal diameter size of air outlet 3, and this structure still reaches the effect that reduces wind and make an uproar when promoting the air-out amount of wind.
Further, as shown in fig. 5 and 6, a side of one of the enclosing plates 12 away from the volute bottom plate 11 is provided with a rib 6 extending from one end to the other end, and a side of the other enclosing plate 12 away from the volute bottom plate 11 is provided with a groove 7 extending from one end to the other end; when the two diversion shells 11 are combined, the convex ribs 6 are clamped in the grooves 7.
In this embodiment, the connection of two water conservancy diversion casings 1 adopts by protruding muscle 6 and recess 7 card and the structure setting, has promoted the leakproofness of connecting, can ensure that the wind that gets into in the holding chamber 2 can not flow from the clearance of junction, guarantees the amount of wind of air-out.
Further, as shown in fig. 1 to 5, the outer sides of the side surfaces of the two enclosing plates 12 far away from the volute bottom plate 11 are respectively provided with a connecting part 8, and the connecting part 8 is provided with a threaded hole; through the setting of connecting portion, can make two connection of water conservancy diversion casing 1 more firm, and then promote the leakproofness of junction.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the present invention.
Claims (6)
1. A fan volute comprises two symmetrically arranged flow guide shells and is characterized in that an accommodating cavity is formed in each flow guide shell; an air outlet is formed in the opening of the flow guide shell; the air outlet is communicated with the accommodating cavity;
the flow guide shell consists of a volute bottom plate, a coaming and an air outlet which are integrally formed; the volute bottom plate is circular;
the side edge of the surrounding plate connected with the volute bottom plate is a first curve section, and the side edge far away from the volute bottom plate is a second curve section;
taking the front view of the flow guide shell as a view direction, the endpoint of the first curve section above the air outlet is a first endpoint (a1), and the endpoint below the air outlet is a second endpoint (a 2); the linear distance between the first end point (a1) and the axis of the volute bottom plate is a first linear distance (L1); the linear distance between the second end point (a2) and the axis of the volute bottom plate is a second linear distance (L2); the second linear distance (L2) is 0.68 times the first linear distance (L1);
taking the front view of the flow guide shell as a view direction, wherein an end point of the second curve section below the air outlet is a fourth end point (b2), and a linear distance between the fourth end point (b2) and an axis of the volute bottom plate is a third linear distance (L3); the end point of the second curve section above the air outlet is a third end point (b1), and the linear distance between the third end point (b1) and the axis of the volute bottom plate is a fourth linear distance (L4); the third linear distance (L3) is 0.48 times the fourth linear distance (L4); the third linear distance (L3) is a second linear distance (L2);
the linear distance between the third end point (b1) and the fourth end point (b2) is equal to the inner diameter of the air outlet part;
the arc curve segment formed by the first end point (a1) and the third end point (b1) is a first arc curve segment (x1), and the first arc curve segment (x1) is coaxially arranged with the air outlet part; the diameter of the first arc curve section (x1) is equal to the inner diameter of the air outlet.
2. The blower volute of claim 1 wherein the intersection of the first curved segment and the second curved segment is a first intersection (Q) when the front view of the baffle housing is taken as the view direction; the first intersection point (Q) and the first end point (a1) and the first intersection point (Q) and the third end point (b1) form a second circular arc curve segment (x2) and a third circular arc curve segment (x3), respectively; the included angle between the second circular arc curve segment (x2) and the third circular arc curve segment (x3) is a first included angle (c 1); the size of the first included angle (c1) gradually increases towards the direction of the air outlet part;
the area formed between the first circular arc curve segment (x1) and the second circular arc curve segment (x2) and the third circular arc curve segment (x3) is a circular arc spherical surface; the connecting part of the arc spherical surface and the inner wall of the air outlet part is an arc surface.
3. The blower volute of claim 1, wherein the volute bottom plate is provided with an air inlet, and the air inlet is provided with an air inlet grid protruding outwards.
4. The blower volute of claim 3, wherein the inner diameter of the air inlet is 0.6 to 0.8 times the inner diameter of the air outlet.
5. The blower volute of claim 1, wherein a side of one of the shrouds facing away from the volute bottom plate is provided with a rib extending from one end to the other end, and a side of the other shroud facing away from the volute bottom plate is provided with a groove extending from one end to the other end; when the two diversion shells are combined, the convex ribs are clamped in the grooves.
6. The blower volute casing according to claim 1, wherein connecting portions are respectively disposed on outer sides of side surfaces of the two enclosing plates away from the volute casing bottom plate, and threaded holes are formed in the connecting portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120356493.8U CN214617212U (en) | 2021-02-10 | 2021-02-10 | Fan volute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120356493.8U CN214617212U (en) | 2021-02-10 | 2021-02-10 | Fan volute |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617212U true CN214617212U (en) | 2021-11-05 |
Family
ID=78441839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120356493.8U Active CN214617212U (en) | 2021-02-10 | 2021-02-10 | Fan volute |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214617212U (en) |
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2021
- 2021-02-10 CN CN202120356493.8U patent/CN214617212U/en active Active
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Effective date of registration: 20240815 Granted publication date: 20211105 |