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Indoor air ventilation device based on Coanda Effect

A Coanda effect and ventilation device technology, which is applied in the field of indoor ventilation devices, can solve problems such as noise jet outflow comfort, and achieve the effects of reducing turbulent flow noise, avoiding personal injury, and low noise

Inactive Publication Date: 2016-02-24
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only takes into account the blowing feeling brought by ordinary fans and the ventilation function of ordinary fresh air devices, but also solves the problems of noise caused by the rotation of ordinary fan blades and poor comfort of jet flow

Method used

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  • Indoor air ventilation device based on Coanda Effect
  • Indoor air ventilation device based on Coanda Effect
  • Indoor air ventilation device based on Coanda Effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: An indoor ventilation device based on the Coanda effect, including a Coanda airfoil 1, an arc cover plate 2, a bottom plate 3, a side plate 4, an air inlet tube 5, a ring frame 6 and a frequency conversion fan 7.

[0025] One end of the Coanda airfoil 1 is an arc guide head 1-1 with a smooth curved surface.

[0026] Metal gauze 6-1 is installed on the ring frame 6.

[0027] The Konda airfoil 1, arc-shaped cover plate 2 and side plate 4 are installed on the bottom plate 3, and the arc-shaped cover plate 2 is arranged on the upper end of the Coanda airfoil 1 with a smooth curved arc-shaped diversion head 1-1. A side plate 4 is respectively installed on both sides of the Coanda airfoil 1 and the arc cover plate 2, and the air inlet chamber 10 is composed of the Coanda airfoil 1, the arc cover 2, the side plate 4 and the bottom plate 3. A bar-shaped air outlet 9 is provided between the arc-shaped guide head 1-1 of the airfoil 1 and the arc-shaped cover plate ...

Embodiment 2

[0028] Embodiment 2: This embodiment includes all the technical features in Embodiment 1. The difference from Embodiment 1 is that an air heater 8 is provided at the mouth of the air inlet cylinder 5 on the bottom plate 3, and the air heater 8 is heated to enter Airflow into the air chamber 10.

Embodiment 3

[0029] Embodiment 3. Two indoor ventilation devices based on the Coanda effect are connected together through a connecting plate 14 to form a combined indoor ventilation device. The connecting plate 14 is installed on the bottom plate 3 of the indoor ventilation device based on the Coanda effect through screws Above, the arc-shaped cover plates 2 of the indoor ventilation device based on the Coanda effect correspond to each other, and an outer cover 11 is installed on the bottom plate 3 by screws. There are two air intake frames 12 for installing filter screens 13 on the top, the air intake frames 12 correspond to the air intake tubes 5 respectively, and the filter screens 13 are installed in the air intake frames 12 .

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Abstract

The invention discloses an indoor air ventilation device based on the Coanda Effect. The indoor air ventilation device comprises a Coanda airfoil-shaped panel, an arc-shaped shield plate, a bottom plate, side plates, an air inlet barrel, an annular frame and a variable frequency fan, wherein the Coanda airfoil-shaped panel, the arc-shaped shield plate and the side plates are arranged on the bottom plate; the arc-shaped shield plate is arranged on the upper end, on which a flow guidance head provided with a smooth curve surface is arranged, of the Coanda airfoil-shaped panel; the two side plates are separately arranged on the two sides of the Coanda airfoil-shaped panel and the arc-shaped shield plate; an air inlet cavity is formed by the Coanda airfoil-shaped panel, the arc-shaped shield plate, the side plates and the bottom plate; a strip-shaped air outlet is formed between the arc-shaped flow guidance head of the Coanda airfoil-shaped panel and the arc-shaped shield plate; the air inlet barrel is arranged on the bottom plate, and is communicated with the air inlet cavity; the assembly height of the air inlet barrel is lower than that of the strip-shaped air outlet, so that noise which is generated when air flow flows out of the air inlet cavity is reduced; the annular frame is arranged in a barrel hole at one end of the air inlet barrel; and the variable frequency fan is arranged in the barrel hole of the air inlet barrel, and is fixed on the annular frame through screws.

Description

technical field [0001] The invention relates to a ventilation device, in particular to an indoor ventilation device based on the Coanda effect. Background technique [0002] The indoor ventilation device is controlled by means of air exchange dilution or ventilation exclusion. air pollutants It is a building environment control technology to realize indoor air environment quality assurance. Although there are many types of indoor ventilation devices on the market, most of them rely on initial velocity jets for ventilation, which has a small disturbance range to the indoor air, low ventilation efficiency, and poor human comfort experience. The rotating shear airflow produces noise, which affects the user experience. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a kind of fresh air induction indoor ventilation device based on Coanda effect. It not only takes into account the blowing fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F7/007F24F13/24
CPCF24F7/007F24F13/24F24F2013/247
Inventor 彭小勇叶雅玲张园符智秋
Owner NANHUA UNIV
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