Fan inner volute

A volute and fan technology, used in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve the problems of uneven air output and sometimes no air, so as to achieve uniform air output, consistent air volume, and reduce noise. Effect

Inactive Publication Date: 2015-11-18
四川圣锦高新科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inner volute of the existing fan is a spiral structure, the static pressure of the airflow will gradually decrease when it flows to the air outlet, and the airflow speed will also slow down accordingly. Unevenness and sporadic wind blowing problems

Method used

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  • Fan inner volute
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 , figure 2 As shown, in the upper cover 10, the straight side 1 with a length of 1.97 mm is connected at 90 degrees to the straight side 2 with a length of 4 mm, and the straight side 2 is connected at a right angle to 90 degrees with the straight side 3 with a length of 14.55 mm. Connect with the arc side 4 with a radius of 6.23mm (referred to as R6.23mm). The curved side 4 is connected to the curved side 6 of R36.29mm via the straight side 5 with a length of 8.97mm, and the curved side 6 is connected to the curved side 7 of R5mm. The curved side 7 is connected to the curved side 9 of R6 mm via the straight side 8 with a length of 18.11 mm. The total length L1 of the upper cover is 74.35 mm. The horizontal dimension L2 between the axis O of the volute and the air outlet of the upper cover is 61.37mm, and the horizontal distance L3 between the arc length center of the arc edge 7 and the axis O of the volute is 38.67mm.

[0026] In the lower cover 2...

Embodiment 2

[0030]In the upper cover 10, the straight side 1 with a length of 1.97±1 mm is connected at 90 degrees to the straight side 2 with a length of 4±1 mm, and the straight side 2 is connected with the straight side 3 with a length of 14.55±3 mm at a right angle of 90 degrees, and the straight side 3 is connected to the arc side 4 with a radius of 6.23±2mm (abbreviated as R6.23±2mm). The curved side 4 is connected to the curved side 6 of R36.29±5mm via the straight side 5 with a length of 8.97±2mm, and the curved side 6 is connected to the curved side 7 of R5±1mm. The curved side 7 is connected to the curved side 9 of R6±1 mm via the straight side 8 with a length of 18.11±4 mm. The total length L1 of the upper cover is 74.35±5mm. The horizontal dimension L2 between the axis O of the volute and the air outlet of the upper cover is 61.37±5mm, and the horizontal distance L3 between the arc length center of the arc edge 7 and the axis O of the volute is 38.67±5mm.

[0031] In the low...

Embodiment 3

[0037] The difference between this embodiment and the above-mentioned embodiments lies in that five brackets (not shown) are respectively provided on the contact surfaces where the upper cover 10 and the lower cover 20 are engaged with each other. When assembling this embodiment, the five brackets (not shown) on the upper cover 10 correspond to the five brackets (not shown) on the lower cover 20 , and they are connected in pairs. In this embodiment, the internal support strength is increased by docking brackets (not shown), so that the structure of this embodiment is firmer and less likely to be damaged during use.

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Abstract

The invention relates to an internal volute for fans, which is provided with an upper cover and a lower cover, wherein the upper cover and the lower cover are connected with a barrel so as to form an irregular tubular shape which extends along a straight line and takes a volute shaft center (O) as a shaft center, one end of the upper cover is provided with three straight-line edges, a first straight-line edge (1) is orthogonally connected with a second straight-line edge (2), the second straight-line edge (2) is orthogonally connected with a third straight-line edge (3), the third straight-line edge (3) is connected with a first radian edge (4), the first radian edge (4) is connected with a second radian edge (6) through a fourth straight-line edge (5), the second radian edge (6) is connected with a third radian edge (7), the third radian edge (7) is connected with a fourth radian edge (9) through a fifth straight-line edge (8), and one end of the lower cover opposite to the end of the upper cover provided with three straight-line edges is provided with three radian edges. A first radian edge (21) is connected with a third radian edge (23) through a second radian edge (22). The third radian edge (23) is connected with a fourth radian edge (25) trough a first straight-line edge (24), the fourth radian edge (25) is connected with a fifth radian edge (26), and the fifth radian edge (26) is connected with a sixth radian edge (27).

Description

technical field [0001] The invention relates to the field of fans, in particular to an inner volute of a fan. Background technique [0002] The fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. In my country, fan is the customary abbreviation for gas compression and gas delivery machinery, that is, a machine that converts rotating mechanical energy into gas pressure energy and kinetic energy, and transports the gas out. It is mainly composed of impeller, motor, inner volute and other components. [0003] The role of the volute in the fan is to concentrate and guide the gas flowing out of the impeller, and to convert part of the kinetic energy of the gas into static pressure. [0004] Most of the existing fan inner volute is a spiral structure that spirals outward along the middle circular circumference. For example, the centrifugal fan volute used in air conditioners is such a struc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42
CPCF04D17/04F04D29/4226
Inventor 喻文才
Owner 四川圣锦高新科技股份有限公司
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