CN219549207U - Ternary volute of single-air-inlet forward multi-wing centrifugal fan - Google Patents
Ternary volute of single-air-inlet forward multi-wing centrifugal fan Download PDFInfo
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- CN219549207U CN219549207U CN202320704126.1U CN202320704126U CN219549207U CN 219549207 U CN219549207 U CN 219549207U CN 202320704126 U CN202320704126 U CN 202320704126U CN 219549207 U CN219549207 U CN 219549207U
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Abstract
The utility model discloses a ternary volute of a single air inlet forward multi-wing centrifugal fan, wherein an air inlet is formed in the volute, a volute tongue is arranged on one side of the volute, an air outlet is formed in the volute tongue and communicated with the interior of the volute, and the radius R of a spiral line on the bottom surface of the bottom of the volute Bottom Radius R of top surface spiral line larger than top of spiral case Top The vertical distance L between the center of the bottom surface of the volute and the edge of the bottom of the volute tongue Bottom Is larger than the vertical distance L between the center position of the top surface of the volute and the top edge of the volute tongue Top The bottom surface expansion angle of the volute is larger than the top surface expansion angle of the volute. The utility model adopts the ternary flow theory to design the ternary volute, so that the volute molded lineThe volute tongue position and the volute tongue molded line are different in the width direction of the volute, and the ternary volute can be well suitable for gas flow of various sections, so that the fan efficiency is improved. The efficiency of the three-way volute is improved by more than about 2.6% compared with that of the two-way volute.
Description
Technical Field
The utility model belongs to the technical field of fans, and particularly relates to a ternary volute of a single-air-inlet forward multi-wing centrifugal fan.
Background
The longitudinal section of the volute of the traditional forward multi-wing centrifugal fan is rectangular, each section in the width direction of the volute is a uniform spiral line, and the volute sheet metal parts are connected through riveting or buckling. The single air inlet forward multi-wing centrifugal fan has obvious change of the gas flowing state from the inlet of the collector to the bottom surface of the volute, and the traditional rectangular volute is of a binary design, so that the traditional rectangular volute cannot be well adapted to gas flowing, and the efficiency of the fan is low.
The utility model adopts ternary design aiming at the single air inlet forward multi-wing centrifugal fan, namely adopts ternary flow theory to design a ternary volute, so that parameters such as volute molded lines, volute tongue positions, volute tongue molded lines and the like are different in the width direction of the volute. The ternary volute can be well suitable for gas flow of each section, and the fan efficiency is improved.
Disclosure of Invention
The utility model aims to provide a ternary volute of a single-air-inlet forward multi-wing centrifugal fan, so as to solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a ternary spiral case of a single air inlet forward multi-wing centrifugal fan comprises a spiral case, wherein an air inlet is formed in the spiral case, a spiral tongue is arranged on one side of the spiral case, an air outlet is formed in the spiral tongue, the air outlet is communicated with the inside of the spiral case, and the radius R of a spiral line on the bottom surface of the spiral case is equal to the radius R of the spiral line on the bottom surface of the spiral case Bottom Radius R of top surface spiral line larger than top of spiral case Top The vertical distance L between the center of the bottom surface of the volute and the edge of the bottom of the volute tongue Bottom Is larger than the vertical distance L between the center position of the top surface of the volute and the top edge of the volute tongue Top The bottom surface expansion angle of the volute is larger than the top surface expansion angle of the volute.
Preferably, the bottom surface spiral radius R of the volute Bottom Radius R of top surface spiral line with top of spiral case Top The relation is: r is R Bottom ＝1.01～1.03R Top 。
Preferably, the L Bottom ＝L Top +3～5mm。
Preferably, the depth of the bottom surface of the volute tongue is 4-6 mm greater than the depth of the top surface of the volute tongue.
Preferably, the radius of the molded line at the outlet of the bottom surface of the volute casing is gradually smaller than that at the outlet of the top surface of the volute casing, and the molded line deviates towards the volute tongue.
Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts the ternary flow theory to design the ternary volute, so that parameters of the volute molded line, the volute tongue position and the volute tongue molded line are different in the width direction of the volute, and the ternary volute can be well suitable for gas flow of each section, and the fan efficiency is improved. The efficiency of the three-way volute is improved by more than about 2.6% compared with that of the two-way volute.
Drawings
Fig. 1 is a schematic elevational view of the present utility model.
Fig. 2 is a schematic diagram of the size and structure of the present utility model.
Fig. 3 is a schematic perspective view of the present utility model.
1. The spiral case, 2, the air intake, 3, the air outlet, 4, the volute tongue.
Detailed Description
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.
Referring to fig. 1 to 3, the present utility model provides a technical solution: a ternary spiral case of a single air inlet forward multi-wing centrifugal fan comprises a spiral case 1, wherein an air inlet 2 is arranged on the spiral case 1, a spiral tongue 4 is arranged on one side of the spiral case 1, an air outlet 3 is arranged on the spiral tongue 4, the air outlet 3 is communicated with the inside of the spiral case 1, and the radius R of a spiral line on the bottom surface of the spiral case 1 is equal to the radius R of a spiral line on the bottom surface of the spiral case Bottom Radius R of top spiral line larger than top of spiral case 1 Top Vertical distance L between center of bottom surface of volute casing 1 and bottom edge of volute tongue 4 Bottom Is larger than the vertical distance L between the center position of the top surface of the volute 1 and the top edge of the volute tongue 4 Top The bottom divergence angle of the volute 1 is greater than the top divergence angle of the volute 1.
In the present embodiment, it is preferable that the bottom surface spiral radius R of the scroll casing 1 Bottom Radius R of the top surface spiral line with the top of the volute 1 Top The relation is: r is R Bottom ＝1.01～1.03R Top The method comprises the steps of carrying out a first treatment on the surface of the In the present embodiment, preferably, L Bottom ＝L Top +3 to 5mm; in this embodiment, preferably, the depth of the bottom surface of the volute tongue 4 is 4-6 mm greater than the depth of the top surface of the volute tongue 4; in this embodiment, preferably, the radius of the line at the outlet of the bottom surface of the volute casing 1 is gradually smaller than the radius of the line at the outlet of the top surface of the volute casing 1, and the line deviates toward the volute tongue 4, so as to improve the flow field by matching with the volute tongue 4, thereby achieving the purpose of improving the efficiency.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a single air inlet forward multi-wing centrifugal fan's ternary spiral case, includes spiral case (1), its characterized in that: an air inlet (2) is formed in the volute (1), a volute tongue (4) is arranged on one side of the volute (1), an air outlet (3) is formed in the volute tongue (4), the air outlet (3) is communicated with the inside of the volute (1), and the radius R of a spiral line on the bottom surface of the bottom of the volute (1) is equal to the radius R of the spiral line on the bottom surface of the volute Bottom Radius R of top surface spiral line larger than top of spiral case (1) Top The vertical distance L between the center of the bottom surface of the volute casing (1) and the bottom edge of the volute tongue (4) Bottom Is larger than the vertical distance L between the center position of the top surface of the volute casing (1) and the top edge of the volute tongue (4) Top The bottom surface expansion angle of the volute (1) is larger than the top surface expansion angle of the volute (1).
2. The ternary volute of a single-air-intake forward multi-wing centrifugal fan of claim 1, wherein: the bottom spiral radius R of the spiral case (1) Bottom Radius R of spiral line on top of spiral case (1) Top The relation is: r is R Bottom ＝1.01～1.03R Top 。
3. The ternary volute of a single-air-intake forward multi-wing centrifugal fan of claim 1, wherein: the vertical distance L between the center of the bottom surface of the volute casing (1) and the bottom edge of the volute tongue (4) Bottom Is larger than the vertical distance between the center of the top surface of the volute (1) and the top edge of the volute tongue (4), and L Bottom ＝L Top +3～5mm。
4. The ternary volute of a single-air-intake forward multi-wing centrifugal fan of claim 1, wherein: the depth of the bottom surface of the volute tongue (4) is 4-6 mm larger than the depth of the top surface of the volute tongue (4).
5. The ternary volute of a single-air-intake forward multi-wing centrifugal fan of claim 1, wherein: the radius of the molded line at the outlet of the bottom surface of the spiral case (1) is gradually smaller than that at the outlet of the top surface of the spiral case (1), and the molded line deviates towards the position of the spiral case tongue (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320704126.1U CN219549207U (en) | 2023-04-03 | 2023-04-03 | Ternary volute of single-air-inlet forward multi-wing centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320704126.1U CN219549207U (en) | 2023-04-03 | 2023-04-03 | Ternary volute of single-air-inlet forward multi-wing centrifugal fan |
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| Publication Number | Publication Date |
|---|---|
| CN219549207U true CN219549207U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320704126.1U Active CN219549207U (en) | 2023-04-03 | 2023-04-03 | Ternary volute of single-air-inlet forward multi-wing centrifugal fan |
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| Country | Link |
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| CN (1) | CN219549207U (en) |
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2023
- 2023-04-03 CN CN202320704126.1U patent/CN219549207U/en active Active
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