CN221074735U - Volute and centrifugal fan - Google Patents

Volute and centrifugal fan Download PDF

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Publication number
CN221074735U
CN221074735U CN202322593379.9U CN202322593379U CN221074735U CN 221074735 U CN221074735 U CN 221074735U CN 202322593379 U CN202322593379 U CN 202322593379U CN 221074735 U CN221074735 U CN 221074735U
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China
Prior art keywords
air outlet
volute
air
air inlet
partition
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CN202322593379.9U
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Chinese (zh)
Inventor
熊军
王少钦
王振勇
佘均文
罗丽珍
余明养
鲁璐
汤梓颖
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TCL Air Conditioner Zhongshan Co Ltd
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TCL Air Conditioner Zhongshan Co Ltd
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Abstract

The application provides a volute and a centrifugal fan, and relates to the field of fans. The volute comprises a shell, wherein the shell is provided with a mounting cavity for accommodating the air supply device; the shell is provided with an air inlet, a first air outlet and a second air outlet; the first air outlet and the second air outlet are partially overlapped along the axial direction of the air inlet, and the air outlet directions of the first air outlet and the second air outlet are different. According to the volute provided by the application, the first air outlet and the second air outlet are arranged in a lamination manner along the axial part of the air inlet, so that the air outlet per unit time of the volute is increased under the condition that the total area of the air outlets is not increased, namely, the air outlet efficiency of the volute is improved.

Description

Volute and centrifugal fan
Technical Field
The application relates to the technical field of fans, in particular to a volute and a centrifugal fan.
Background
The existing centrifugal fan generally adopts a mode of increasing the area of an air outlet to improve the air output and the air output efficiency. However, increasing the air outlet area generally results in an increase in the size of the volute, which results in inconvenience in installation and maintenance of the centrifugal fan. Therefore, how to improve the air outlet efficiency of the centrifugal fan on the premise of not increasing the size of the volute is always a technical direction continuously studied in the industry.
Disclosure of utility model
Therefore, the present application is directed to a volute and a centrifugal fan for improving the air outlet efficiency of the volute without increasing the total area of the air outlet.
The technical scheme adopted by the application for solving the technical problems is as follows:
In a first aspect, the application provides a volute, which comprises a housing, wherein the housing is provided with a mounting cavity for accommodating an air supply device, and an air inlet, a first air outlet and a second air outlet are formed in the housing; the first air outlet and the second air outlet are partially overlapped along the air inlet direction of the air inlet, and the air outlet directions of the first air outlet and the second air outlet are different.
In some embodiments of the application, the housing further comprises a baffle disposed within the mounting cavity; the baffle separates first air outlet and second air outlet, and separates the installation cavity along the axial of air intake into first subchamber and the second subchamber of mutual intercommunication, and first subchamber passes through the baffle and smoothly transits first air outlet, and the second subchamber passes through the baffle and smoothly transits to the second air outlet.
In some embodiments of the present application, an auxiliary air outlet is formed on one side of the second air outlet along the stacking direction, the auxiliary air outlet is communicated with the second air outlet, and the auxiliary air outlet is opposite to the first air outlet along the circumferential direction of the air inlet, and the installation cavity is smoothly transited to the auxiliary air outlet through the partition plate.
In some embodiments of the present application, a corner is disposed at a lamination portion between the first air outlet and the second air outlet, and the corner is a rounded corner.
In some embodiments of the present application, the partition includes an inclined portion disposed on an inner wall of the installation cavity, one end of the inclined portion is connected to a side of the auxiliary air outlet away from the second air outlet, and the other end extends toward the second air outlet and the installation cavity.
In some embodiments of the present application, a side edge of the first air outlet, which is close to the auxiliary air outlet, is a first vertical edge; the baffle plate also comprises an arc-shaped part, and the arc-shaped part is parallel to the axial direction of the air inlet; one end of the arc-shaped part is connected with the inner wall of the mounting cavity, and the other end of the arc-shaped part is connected with the first vertical edge; one end of the inclined part, which is close to the axial direction of the air inlet, is connected with the arc-shaped part.
In some embodiments of the present application, the partition further includes a second partition portion parallel to the plane in which the air inlet is located, and a periphery of the second partition portion is sequentially connected to one end of the inclined portion facing away from the second air outlet, an outer convex surface of the arc portion, and an inner wall of the mounting cavity.
In some embodiments of the present application, a side edge of the first air outlet at the lamination position is a second transverse edge; the partition plate comprises a first partition part, the first partition part is connected with the second transverse edge, the first partition part is parallel to the plane where the air inlet is located, and separates a first subchamber and a second subchamber, and the first partition part is connected with the second transverse edge.
In some embodiments of the application, a deflector ring is disposed in the mounting cavity along the circumference of the air inlet.
In a second aspect, the application also provides a centrifugal fan, which comprises an air supply device and the volute; the air supply device is arranged in the mounting cavity.
In summary, due to the adoption of the technical scheme, the application at least comprises the following beneficial effects:
according to the volute provided by the application, the first air outlet and the second air outlet are partially overlapped along the air inlet direction of the air inlet, so that the air outlet per unit time of the volute is increased under the condition that the total area of the air outlets is not increased, namely, the air outlet efficiency of the volute is improved.
Drawings
For a clearer description of an embodiment of the application, reference will be made to the accompanying drawings of embodiments, which are given for clarity, wherein:
fig. 1 is a schematic structural diagram of a volute provided by an embodiment of the present application;
FIG. 2 is a schematic view of a volute according to an embodiment of the present application;
fig. 3 is a schematic structural view of a volute according to another embodiment of the present application;
FIG. 4 is a top view of a volute provided by an embodiment of the present application;
FIG. 5 is a front view of a volute provided by an embodiment of the present application;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a cross-sectional view taken along B-B in FIG. 5;
FIG. 8 is a schematic diagram of a duct shape corresponding to a second air outlet according to an embodiment of the present application;
FIG. 9 is a cross-sectional view taken along line C-C of FIG. 5;
FIG. 10 is a schematic diagram of a duct shape corresponding to a first air outlet according to an embodiment of the present application;
FIG. 11 is a cross-sectional view of a volute provided by an embodiment of the present application;
fig. 12 is an enlarged view of D in fig. 11;
Fig. 13 is a schematic structural diagram of a centrifugal fan according to an embodiment of the present application.
Reference numerals illustrate:
1000-centrifugal fan;
100-volute; 200-impeller; 300-driving member;
1-a mounting cavity; 2-a first air outlet; 3-a second air outlet; 4-an air inlet; 5-corner; 6-an inclined part; 7-an arc-shaped part; 8-a first partition; 9-coaming; 10-end plates; 11-clamping blocks; 12-slots; 13-a first surface; 14-a second partition; 15-a guide ring; 16-a housing; 17-auxiliary air outlet.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and fully described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a unique orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or the inclusion of a number of indicated features. Thus, a feature defining "a first" or "a second" may include one or more features, either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more unless explicitly defined otherwise.
In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as exemplary in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.
To facilitate an understanding of the solution of the application, spline curves and arrows used for reference numerals in the drawings are described herein: the parts indicated for the spline without arrow are solid parts, i.e. parts with solid structure; the parts indicated for the spline with arrow are virtual parts, i.e. parts without solid structure.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a volute 100 according to an embodiment of the application. Embodiments of the present application provide a volute 100. The volute 100 includes a housing 16. The housing is provided with a mounting cavity 1 for accommodating the air supply device, and an air inlet 4, a first air outlet 2 and a second air outlet 3 are formed in the housing 16. Along the air inlet direction of the air inlet 4, the first air outlet 2 and the second air outlet 3 are partially overlapped, and the air outlet directions of the first air outlet 2 and the second air outlet 3 are different.
It can be appreciated that the first air outlet 2, the second air outlet 3 and the air inlet 4 are all communicated with the installation cavity 1.
The housing 16 has, for example, two oppositely disposed end plates 10 (for convenience in illustrating the internal structure of the volute 100, fig. 1 to 3 each show a schematic view of the structure of the volute 100 with one end plate removed), and a shroud 9 connected between the two end plates 10. The two end plates 10 and the shroud 9 together define the mounting cavity 1. At least one end plate 10 is provided with an air inlet 4. The coaming 9 is provided with a first air outlet 2 and a second air outlet 3.
The first air outlet 2 and the second air outlet 3 are partially overlapped in the axial direction of the air inlet, as shown in fig. 1. The central angle corresponding to the circumferential direction of the air inlet 4 at the overlapped part is alpha, and the following conditions are satisfied: alpha is more than or equal to 5 degrees and less than or equal to 80 degrees, alternatively, alpha is more than or equal to 10 degrees and less than or equal to 47 degrees.
In the following, with reference to test data, in the embodiment of the present application, the second air outlet 3 and the first air outlet 2 of the volute used by the centrifugal fan are partially overlapped in the air inlet direction, so as to effectively improve the air outlet efficiency of the centrifugal fan, which is specifically shown in table 1 and table 2.
TABLE 1 comparison of the present example with the prior art
As can be seen from table 1, under the conditions of different air outlet layouts and the same conditions, the air outlet efficiency of the centrifugal fan using the volute 100 disclosed in this embodiment is significantly higher than that of a conventional centrifugal fan. As can be seen from this, the air outlet efficiency of the scroll case 100 disclosed in the present embodiment is higher on the premise that the noise is substantially unchanged.
TABLE 2 comparison of the present example with the prior art
As can be seen from table 2, the air outlet area of the conventional volute is increased by 60% compared with the air outlet area of the volute 100 of the present application under the same conditions as the rest of the conditions in which the layout of the air outlets is different. The air-out efficiency of a conventional volute is still lower than that of the volute 100 disclosed in the embodiments of the present application. That is, in the case that the air outlet area is smaller than that of a conventional centrifugal fan, the air outlet efficiency of the volute 100 disclosed in the embodiment is still higher than that of a conventional volute on the premise that the noise is basically unchanged.
As can be seen from the above, in the volute 100 provided in this embodiment, the first air outlet 2 and the second air outlet 3 are stacked along the axial portion of the air inlet, so that the air output per unit time of the volute 100 can be increased without increasing the total area of the air outlets, that is, the air output efficiency of the volute 100 is improved. In addition, compared with a conventional centrifugal fan with a larger air outlet area, the volute 100 disclosed by the embodiment of the application can still have more efficient air outlet efficiency, that is, the volute disclosed by the embodiment of the application can still maintain the efficient air outlet efficiency on a smaller volume. Therefore, the volute 100 disclosed by the embodiment of the application can be beneficial to reducing the size of a centrifugal fan, and then the size of the whole air conditioner adopting the centrifugal fan can be reduced. Especially in environments where space is small, for example, the overall size of a kitchen air conditioner. Therefore, on the premise of ensuring the air outlet efficiency, the overall size can be effectively reduced, so that after-sales installation and maintenance are facilitated, and the overall aesthetic property can be improved.
It is to be understood that the air outlet area in the foregoing table is only an example, and the present application is not limited thereto. In addition, the first air outlet 2 and the second air outlet 3 may be oriented completely the same or may be oriented partially the same.
Please refer to fig. 1. In some embodiments of the application, the housing 16 further comprises a baffle disposed within the mounting cavity 1. The first air outlet 2 and the second air outlet 3 are separated by the partition plate, and the installation cavity 1 is divided into a first subchamber and a second subchamber which are communicated with each other along the axial direction of the air inlet 4. The first subchamber is smoothly transited to the first air outlet 2 through the partition plate, and the second subchamber is smoothly transited to the second air outlet 3 through the partition plate.
The partition plate can be integrally formed with the coaming 9, and can be welded, bonded, riveted or screwed on the coaming 9. The partition plate is used for separating the air flow flowing to the first air outlet 2 from the air flow flowing to the second air outlet 3 and guiding the air flow. Therefore, one part of air flow can be more smoothly thrown out from the first air outlet 2 after entering the first air outlet 2 from the first subchamber, and the other part of air flow can be more smoothly thrown out from the second air outlet 3 after entering the second air outlet 3 from the second subchamber.
Referring to fig. 2 to 4, fig. 2 is a schematic structural diagram of another volute 100 according to an embodiment of the present application, fig. 3 is a schematic structural diagram of another view of the volute 100 according to an embodiment of the present application, and fig. 4 is a top view of the volute 100 according to an embodiment of the present application. In some embodiments of the present application, an auxiliary air outlet 17 is formed at one side of the second air outlet 3 along the stacking direction, the auxiliary air outlet 17 is communicated with the second air outlet 3, and along the circumferential direction of the air inlet 4, the auxiliary air outlet 17 is opposite to the first air outlet 2, and the installation cavity 1 is smoothly transited to the auxiliary air outlet 17 through a partition plate.
As shown in fig. 5, fig. 5 is a front view of a volute 100 according to an embodiment of the present application. The dimension of the auxiliary air outlet 17 in the axial direction of the air inlet 4 is H 0, and the height dimension H 1 of the second air outlet 3 meets the following requirements: h 0＝0.2～0.3H1.
It should be noted that, after the blower (typically including the impeller and the driving motor) is installed in the volute 100, the driving motor may block the air intake. To mitigate this effect, the volute 100 may be provided with air inlets 4 at both axial ends of the air supply device. Further, one of the first air outlet 2 and the second air outlet 3 closer to the driving motor is the first air outlet 2, which may be provided as a complete rectangular opening, and the other is a truncated rectangular opening formed by combining the second air outlet 3 and the auxiliary air outlet 17. In particular to the structure shown in fig. 2, i.e. such that the first air outlet 2 and the second air outlet 3 have a common edge, the common edge has a corner 5, and the outer convex surface of the corner 5 faces the second air outlet 3.
In the following, with reference to test data, the embodiment of the present application is described by providing the auxiliary air outlet 17 to effectively improve the air outlet efficiency of the centrifugal fan, and specifically, table 3 is shown.
Table 3. Alignment table of centrifugal fans before and after the auxiliary air outlet 17
As can be seen from table 3, the air outlet efficiency of the centrifugal fan using the volute 100 provided with the auxiliary air outlet 17 is significantly higher than the air outlet efficiency of the centrifugal fan 1000 using the volute 100 not provided with the auxiliary air outlet 17, in the case that the air outlet layout is different and the remaining conditions are the same. It can be seen that the air outlet efficiency of the volute 100 can be further improved by providing the auxiliary air outlet 17.
Referring to fig. 2 and 3, in some embodiments of the present application, a corner 5 is disposed at a lamination portion between the first air outlet 2 and the second air outlet 3, and the corner 5 is rounded.
It will be appreciated that the outer convex surface of the corner 5 faces the second outlet 3. One side of the corner 5 is a common edge of the first air outlet 2 and the second air outlet 3, and the other side is a common edge of the first air outlet 2 and the auxiliary air outlet 17.
In this embodiment, the corners 5 are rounded, which is beneficial to the air outlet and reduces the noise of the air outlet.
It will be appreciated that the first air outlet 2 and the second air outlet 3 are partially overlapped in the axial direction of the air inlet 4, so that the first air outlet 2 and the second air outlet 3 have a common edge at the overlapped portion, and the auxiliary air outlet 17 is communicated with the second air outlet 3 and is arranged at intervals along the circumferential direction of the air inlet 4 with the first air outlet, so that the common edge has a corner 5, and an outer convex surface of the corner 5 faces the second air outlet 3.
Referring to fig. 2, in some embodiments of the present application, the partition includes an inclined portion 6, the inclined portion 6 is disposed on an inner wall of the installation cavity 1, one end of the inclined portion 6 is connected to a side of the auxiliary air outlet 17 away from the second air outlet 3, and the other end extends toward the second air outlet 3 and the installation cavity 1.
It can be appreciated that, along the air outlet direction of the second air outlet 3, the distance between the inclined portion 6 and the plane where the side edge of the second air outlet 3 away from the auxiliary air outlet 17 is located gradually increases, so that an air duct diffuser is formed in the volute 100 at a position adjacent to the second air outlet 3, thereby further improving the air outlet efficiency of the volute 100.
In this embodiment, the end plate 10 adjacent to the second air outlet 3 has an angle β with the inclined portion 6, satisfying 0 < β+.70°, alternatively β=39°, as shown in fig. 6, and fig. 6 is a cross-sectional view taken along A-A in fig. 5.
Referring to fig. 7 and 8, fig. 7 is a cross-sectional view taken along B-B in fig. 5, and fig. 8 is a schematic diagram of a duct-shaped line corresponding to the second air outlet 3 according to an embodiment of the present application. In some embodiments of the present application, the second air outlet 3 and the auxiliary air outlet 17 have a diffuser in the air outlet direction, so as to further improve the air outlet efficiency.
Referring to fig. 1 and 3, in some embodiments of the present application, a side edge of the first air outlet 2 near the auxiliary air outlet 17 is a first vertical edge. The partition plate also comprises an arc-shaped part 7, and the arc-shaped part 7 is parallel to the axial direction of the air inlet 4; one end of the arc-shaped part 7 is connected with the inner wall of the installation cavity 1, and the other end is connected with the first vertical edge. One axial end of the inclined part 6 near the air inlet 4 is connected with the arc-shaped part 7.
It will be appreciated that the concave surface of the arcuate portion 7 faces in the axial direction of the air inlet 4.
The arc-shaped part 7 is used for separating the air flow thrown out from the first air outlet 2 from the air flow thrown out from the second air outlet 3 and guiding the air flow so that the air flow can be thrown out from the first air outlet 2 more smoothly.
The arc-shaped part 7 is provided with a first surface 13 on one side facing the axial direction of the air inlet 4, one side, far away from the first air outlet 2, of the first surface 13 is inscribed on the inner peripheral surface of the installation cavity 1, and one side, close to the first air outlet 2, of the first surface 13 is coplanar with the first vertical edge. By limiting the first surface 13, the wind resistance of the arc-shaped portion 7 can be reduced, so that the wind outlet efficiency is improved.
Referring to fig. 2, in some embodiments of the present application, the partition plate further includes a second partition portion 14 parallel to the plane of the air inlet 4, and the periphery of the second partition portion is sequentially connected to one end of the inclined portion 6 facing away from the second air outlet 3, the outer convex surface of the arc portion 7, and the inner wall of the installation cavity 1.
The second partition 14 is used for guiding the air flow entering the second air outlet 3, so that the air flow can be more smoothly thrown out from the second air outlet 3 after entering the second air outlet 3 from the second subchamber.
Referring to fig. 3, in some embodiments of the present application, a side edge of the first air outlet 2 at the lamination position is a second transverse edge. The partition plate comprises a first partition part 8, the first partition part 8 is connected with the second transverse edge, and the first partition part 8 is parallel to the plane where the air inlet 4 is located and separates a first subchamber and a second subchamber. The first partition 8 is connected to the second lateral side.
The first separation part 8 is used for separating the installation cavity into a first sub-cavity and a second sub-cavity, so that the air flow of the first sub-cavity can enter the first air outlet 2, the second sub-cavity can enter the second air outlet 3, the air inlet of the first air outlet 2 and the second air outlet 3 is more uniform, and the air outlet uniformity of the first air outlet 2 and the second air outlet 3 is improved.
Referring to fig. 9 and 10, fig. 9 is a cross-sectional view taken along line C-C in fig. 4, and fig. 10 is a schematic diagram of a duct-shaped line corresponding to the first air outlet 2 according to an embodiment of the present application. The first air outlet 2 has a diffuser section in the air outlet direction to further improve the air outlet efficiency.
Optionally, a diffuser is disposed on one side of the first air outlet 2 and the second air outlet 3, which are located on the installation cavity 1. And the first air outlet 2 and the auxiliary air outlet 17 are arranged opposite to each other such that the two air outlets have a common edge, so that the diffuser sections of the two air outlets overlap in the circumferential direction of the air inlet 4. Thereby, the overall diffuser section is increased in size in the axial direction of the air intake 4. Therefore, the diffuser sections with smaller diffusion angles can be adopted at the air outlets respectively, so that the air outlet can be facilitated, the problem of larger diffusion loss caused by overlarge diffusion angles can be avoided, and the air outlet efficiency of the volute 100 is improved.
Referring to fig. 5, in the axial direction of the air inlet 4, the height dimension H 1 of the second air outlet 3, the sum of the height dimension of the first air outlet 2 and the height dimension of the auxiliary air outlet 17 is H 2, and the height dimension of the housing 16 is H, which satisfies the following conditions: h 2＜H1 is less than 0.8H. In order to ensure that the air outlet of the first air outlet 2 and the second air outlet 3 is smooth, and prevent the air outlet from generating vortex abnormal sound, H 1 and H 2 are required to be smaller than 0.8H.
In some embodiments, as shown in fig. 1 and 2, the portion of the shroud 9 where the second air outlet 3 and the first air outlet 2 are provided is a flat plate structure. Therefore, the air outlet surface is smooth, and the air outlet surface is convenient to install on the shell and other parts of the air conditioner. Optionally, a plurality of clamping blocks 11 are provided on the flat plate structure, and slots 12 are provided on the clamping blocks 11. Correspondingly, an inserting block is arranged on the shell of the air conditioner. When the volute 100 is installed on the casing of the air conditioner, the insert block is inserted into the slot 12 to position the installation position of the volute 100, thereby improving the installation efficiency.
Referring to fig. 11, fig. 11 is a cross-sectional view of a volute 100 according to an embodiment of the application. In some embodiments of the application, the air intakes 4 are provided on both end plates 10. One air inlet 4 is located on the side of the housing 16 close to the driving element and the other air inlet 4 is located on the side of the housing 16 facing away from the driving element. The two air inlets 4 are arranged, so that the air inlet area can be increased, and the air inlet of the first air outlet 2 is more sufficient, and the air outlet efficiency of the volute 100 is improved.
Referring to fig. 4, 7 and 8, the air inlet 4 is optionally elliptical, and the major axis of the ellipse is parallel to the axial direction of the second air outlet 3 and the first air outlet 2.
The distance from the edge of the oval air inlet 4 to the circumference of the impeller is gradual, so that the speed and pressure of the air flow entering the mounting cavity 1 from the air inlet 4 is gradual. The gradual airflow has relative motion along the circumferential direction, so that the overflow of the airflow can be reduced, and the reflux is reduced, so that the noise of the air inlet is reduced. Therefore, the oval air inlet 4 changes the interval distribution between the air inlet 4 and the periphery of the impeller, and then changes the pressure distribution and trend of the air flow, so that the backflow between the oval air inlet 4 and the impeller and the shell 16 is weakened, and the air inlet speed of the volute 100 is increased.
In some embodiments of the application, a deflector ring 15 is arranged in the mounting cavity 1 along the circumference of the air inlet 4. The guide ring 15 is a smooth and convex guide structure so as to prevent the airflow from being scattered by sharp corners, thereby avoiding the noise such as whistle blowing, screaming and the like, and effectively reducing the noise level at the air inlet.
Referring to fig. 12, fig. 12 is an enlarged view of fig. 11 at a. Optionally, the deflector ring 15 is integrally formed with the housing 16. The guide ring 15 comprises an arc section and a straight section along the radial direction, the inner concave surface of the arc section faces the mounting cavity 1, the outer diameter side of the arc section is connected with the shell 16, and the inner diameter side of the arc section is connected with the straight section. So that the air flow of the air inlet 4 flows along the outer convex surface of the circular arc section and then flows along the inner diameter of the straight section and enters the mounting cavity 1. And then sucked into the blower by the rotation of the impeller 200. Finally, the air is thrown out from the first air outlet 2 and the second air outlet 3 backwards through the replacement of the air supply device.
Referring to fig. 13, fig. 13 is a schematic structural diagram of a centrifugal fan 1000 according to an embodiment of the application. The embodiment of the application also provides a centrifugal fan 1000, which comprises an air supply device and the volute 100. The air supply device is arranged in the installation cavity 1. The blower device includes an impeller 200 and a driving member 300. The impeller 200 is arranged in the mounting cavity 1, the end part of the impeller 200 faces the air inlet 4, and the circumferential direction of the impeller 200 faces the first air outlet 2 and the second air outlet 3. The driving member 300 is located at one side of the inside of the impeller 200, is coupled to the impeller 200 by a shaft, and is configured to drive the impeller 200 to rotate. In the axial direction of the air inlet 4, the first air outlet 2 is located at one side of the second air outlet 3 close to the driving member 300. The air inlet 4 is arranged at least on the end plate remote from the drive member.
The part of the impeller opposite to the second air outlet 3 is a first section, and the part opposite to the first air outlet 2 is a second section. Optionally, H 1 is greater than the length of the first section and H 2 is greater than the length of the second section.
While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements and adaptations of the application may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within the present disclosure, and therefore, such modifications, improvements, and adaptations are intended to be within the spirit and scope of the exemplary embodiments of the present disclosure.

Claims (10)

1. A volute, comprising:
The shell is provided with a mounting cavity for accommodating the air supply device, and an air inlet, a first air outlet and a second air outlet are formed in the shell; the first air outlet and the second air outlet are partially overlapped along the air inlet direction of the air inlet, and the air outlet directions of the first air outlet and the second air outlet are different.
2. The volute of claim 1, wherein the housing further comprises a baffle disposed within the mounting cavity; the partition board separates the first air outlet from the second air outlet, the installation cavity is divided into a first subchamber and a second subchamber which are communicated with each other along the axial direction of the air inlet, the first subchamber is smoothly transited to the first air outlet through the partition board, and the second subchamber is smoothly transited to the second air outlet through the partition board.
3. The volute of claim 2, wherein an auxiliary air outlet is formed in one side of the second air outlet along the stacking direction, the auxiliary air outlet is communicated with the second air outlet, the auxiliary air outlet is opposite to the first air outlet along the circumferential direction of the air inlet, and the mounting cavity is smoothly transited to the auxiliary air outlet through the partition plate.
4. A volute according to claim 3, wherein a corner is provided at the stack between the first and second outlets, the corner being rounded.
5. A volute according to claim 3, wherein the partition comprises an inclined portion, the inclined portion is disposed on the inner wall of the installation cavity, one end of the inclined portion is connected with the side edge of the auxiliary air outlet away from the second air outlet, and the other end extends to the second air outlet and the installation cavity.
6. The volute of claim 5, wherein a side of the first air outlet proximate the auxiliary air outlet is a first vertical side; the partition plate further comprises an arc-shaped part, and the arc-shaped part is parallel to the axial direction of the air inlet; one end of the arc-shaped part is connected with the inner wall of the mounting cavity, and the other end of the arc-shaped part is connected with the first vertical edge; one axial end of the inclined part, which is close to the air inlet, is connected with the arc-shaped part.
7. The volute of claim 6, wherein the separator further comprises a second separator parallel to the plane in which the air inlet is located, and wherein the periphery of the second separator is sequentially connected with one end of the inclined portion facing away from the second air outlet, the outer convex surface of the arc portion, and the inner wall of the mounting cavity.
8. The volute of claim 2 wherein the side of the first air outlet where the stack is located is a second lateral side; the partition plate comprises a first partition part, the first partition part is connected with the second transverse edge, and the first partition part is parallel to the plane where the air inlet is located and separates the first subchamber from the second subchamber.
9. The volute of claim 1, wherein a deflector ring is disposed in the mounting chamber along a circumference of the air inlet.
10. A centrifugal fan, comprising:
A volute according to any one of claims 1 to 9;
And the air supply device is arranged in the mounting cavity.
CN202322593379.9U 2023-09-21 2023-09-21 Volute and centrifugal fan Active CN221074735U (en)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322593379.9U CN221074735U (en) 2023-09-21 2023-09-21 Volute and centrifugal fan

Publications (1)

Publication Number Publication Date
CN221074735U true CN221074735U (en) 2024-06-04

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Family Applications (1)

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Country Status (1)

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