CN220748575U - Single-suction double-outlet centrifugal fan with arc-shaped air inlet box - Google Patents
Single-suction double-outlet centrifugal fan with arc-shaped air inlet box Download PDFInfo
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- CN220748575U CN220748575U CN202322353216.3U CN202322353216U CN220748575U CN 220748575 U CN220748575 U CN 220748575U CN 202322353216 U CN202322353216 U CN 202322353216U CN 220748575 U CN220748575 U CN 220748575U
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- 238000009423 ventilation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of centrifugal fans, and particularly discloses a single-suction double-outlet centrifugal fan with an arc-shaped air inlet box, which comprises a shared arc-shaped air inlet box, a main shaft, two air inlets, two shell groups and two impeller groups; the two air inlets are respectively connected with the shared arc-shaped air inlet box, one side, far away from the shared arc-shaped air inlet box, of the two air inlets is connected with the shell group, the impeller group is arranged in the shell group, and the main shaft is fixedly connected with the impeller group and rotationally connected with the shell group; the common arc-shaped air inlet box comprises an air inlet upper box body and an air inlet lower box body which are arranged up and down and are communicated, and the air inlet upper box body is an arc-shaped box body which is in transition from a circular structure to a rectangular structure from top to bottom; the upper side of the air inlet lower box body is matched and communicated with the rectangular structure; and through holes connected with the air inlets are respectively arranged on two sides of the air inlet lower box body. The common arc traveling gas box can enable the gas inlet to be flatter, more gentle and smoother.
Description
Technical Field
The utility model belongs to the technical field of centrifugal fans, and particularly relates to a single-suction double-outlet centrifugal fan with an arc-shaped air inlet box.
Background
Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft in boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc.
The principle of the centrifugal fan is as follows: the air flow axially enters the shell group and is thrown to the edge of the impeller group under the action of centrifugal force and is discharged from a radial air outlet, and in order to enable the air flow to enter from the radial direction and then enter the shell group from the axial direction, a radial air inlet box is arranged at present.
The applicant discloses in the patent of the previous application a patent named single-suction double-outlet centrifugal ventilator (publication number CN 218991908U), in which the inlet box is square, the square inlet box can promote the inlet resistance to a certain extent, affecting the smoothness of the inlet.
Disclosure of Invention
The utility model aims to provide a single-suction double-outlet centrifugal fan with an arc-shaped air inlet box, so as to solve the problem that air inlet resistance can be improved to a certain extent by adopting a square air inlet box in the prior art, and air inlet smoothness is affected.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: an arc air inlet box single-suction double-outlet centrifugal fan comprises a shared arc air inlet box, a main shaft, two air inlets, two shell groups and two impeller groups; the two air inlets are respectively connected with a shared arc air inlet box, one side, away from the shared arc air inlet box, of each air inlet is connected with the shell group, an impeller group is arranged in the shell group, and the main shaft is fixedly connected with the impeller group and rotationally connected with the shell group; the shared arc air inlet box comprises an air inlet upper box body and an air inlet lower box body which are arranged up and down and are communicated, and the air inlet upper box body is an arc box body which is in transition from a circular structure to a rectangular structure from top to bottom; the upper side of the air inlet lower box body is matched with and communicated with the rectangular structure; and through holes connected with the air inlets are respectively formed in two sides of the air inlet lower box body.
Further, the diameter of the circular structure is larger than the length and width of the rectangular structure.
Further, the lower box that admits air includes upper rectangular cavity and the half arc cavity of lower that sets up from top to bottom and communicates, the length of upper rectangular cavity equals the diameter of half arc cavity down.
Further, two bearing boxes are connected to the main shaft, and the two bearing boxes are respectively located on two sides of the two shell groups.
The working principle of the technical scheme is as follows: when the centrifugal fan operates, gas enters from the shared arc-shaped air inlet box, and half of the gas passes through the air inlet at one side and the fan impeller group in the shell group and is discharged from the air outlet of the shell group; the other half of the air is discharged from the air outlet of the shell group through the air inlet at the other side and the fan impeller group in the shell group, thereby realizing single suction and double discharge.
The beneficial effects of this technical scheme lie in:
(1) the common arc traveling gas tank in the technical scheme can enable gas inlet to be flatter, more gentle and smoother.
(2) The side of the lower air inlet box body in the technical scheme is a plane, so that the stability of the lower air inlet box body in connection with the main shaft and the air inlet can be ensured.
(3) According to the scheme, single suction and double discharge can be realized, and air supply is carried out on two units at the same time.
Drawings
FIG. 1 is a perspective view of a single suction double outlet centrifugal fan with an arcuate inlet box according to the present utility model;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a side view of FIG. 2;
fig. 4 is a perspective view of the common arcuate inlet box of fig. 1.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the air inlet device comprises a shared arc-shaped air inlet box 1, an air inlet 2, a shell group 3, a main shaft 4, a bearing box 5, an air outlet 6, an impeller group 7, an air inlet upper box body 8, an air inlet lower box body 9, a circular structure 10, an upper rectangular cavity 11, a lower semi-arc-shaped cavity 12 and a through hole 13.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiment is basically as shown in the accompanying figures 1-4: the single-suction double-outlet centrifugal fan with the arc-shaped air inlet box comprises a common arc-shaped air inlet box 1, a main shaft 4, two air inlets 2, two shell groups 3 and two impeller groups 7; two air inlets 2 are respectively connected with the shared arc-shaped air inlet box 1, one side, away from the shared arc-shaped air inlet box 1, of the two air inlets 2 is connected with the shell group 3, the impeller group 7 is arranged in the shell group 3, and the main shaft 4 is fixedly connected with the impeller group 7 and rotationally connected with the shell group 3. As shown in fig. 4, the shared arc-shaped air inlet box 1 comprises an air inlet upper box body 8 and an air inlet lower box body 9 which are arranged up and down and are communicated, the air inlet upper box body 8 is an arc-shaped box body which is transited from a circular structure 10 to a rectangular structure from top to bottom, and the diameter of the circular structure 10 is larger than the length and the width of the rectangular structure. The upper side of the air inlet lower box body 9 is matched with and communicated with the rectangular structure; two sides of the lower air inlet box body 9 are respectively provided with a through hole 13 connected with the two air inlets 2. The lower air inlet box body 9 comprises an upper rectangular cavity 11 and a lower semi-arc cavity 12 which are arranged up and down and are communicated, the length of the upper rectangular cavity 11 is equal to the diameter of the lower semi-arc cavity 12, and the central axis of the lower semi-arc cavity 12 coincides with the central axis of the through hole 13. The main shaft 4 is connected with two bearing boxes 5 (a positioning bearing box 5 and a non-positioning bearing box 5 respectively), and the two bearing boxes 5 are respectively positioned at two sides of the two casing groups 3.
The specific implementation process is as follows:
when the centrifugal fan operates, gas enters from the shared arc-shaped air inlet box 1, and half of the gas passes through the air inlet 2 at one side and the fan impeller group 7 in the shell group 3 and is discharged from the air outlet 6 of the shell group 3; the other half of the air is discharged from the air outlet 6 of the shell group 3 through the air inlet 2 at the other side and the fan impeller group 7 in the shell group 3, thereby realizing single suction and double discharge.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application day or before the priority date of the present utility model, and can know all the prior art in the field, and have the capability of applying the conventional experimental means before the date, so that a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. The utility model provides a two centrifugal fan that go out is inhaled singly to arc inlet box which characterized in that: comprises a shared arc-shaped air inlet box (1), a main shaft (4), two air inlets (2), two shell groups (3) and two impeller groups (7); the two air inlets (2) are respectively connected with the shared arc-shaped air inlet box (1), one side, away from the shared arc-shaped air inlet box (1), of the two air inlets (2) is connected with the shell group (3), an impeller group (7) is arranged in the shell group (3), and the main shaft (4) is fixed with the impeller group (7) and is rotationally connected with the shell group (3); the shared arc-shaped air inlet box (1) comprises an air inlet upper box body (8) and an air inlet lower box body (9) which are arranged up and down and are communicated, and the air inlet upper box body (8) is an arc-shaped box body which is transited from a circular structure (10) to a rectangular structure from top to bottom; the upper side of the air inlet lower box body (9) is matched with and communicated with the rectangular structure; and through holes (13) connected with the air inlet (2) are respectively arranged on two sides of the air inlet lower box body (9).
2. The arc inlet box single suction double outlet centrifugal fan of claim 1, wherein: the diameter of the circular structure (10) is greater than the length and width of the rectangular structure.
3. The arc inlet box single suction double outlet centrifugal fan of claim 1, wherein: the air inlet lower box body (9) comprises an upper rectangular cavity (11) and a lower semi-arc cavity (12) which are arranged up and down and are communicated, and the length of the upper rectangular cavity (11) is equal to the diameter of the lower semi-arc cavity (12).
4. The arc inlet box single suction double outlet centrifugal fan of claim 1, wherein: the main shaft (4) is connected with two bearing boxes (5), and the two bearing boxes (5) are respectively positioned at two sides of the two shell groups (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322353216.3U CN220748575U (en) | 2023-08-31 | 2023-08-31 | Single-suction double-outlet centrifugal fan with arc-shaped air inlet box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322353216.3U CN220748575U (en) | 2023-08-31 | 2023-08-31 | Single-suction double-outlet centrifugal fan with arc-shaped air inlet box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220748575U true CN220748575U (en) | 2024-04-09 |
Family
ID=90568716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322353216.3U Active CN220748575U (en) | 2023-08-31 | 2023-08-31 | Single-suction double-outlet centrifugal fan with arc-shaped air inlet box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748575U (en) |
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2023
- 2023-08-31 CN CN202322353216.3U patent/CN220748575U/en active Active
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