CN103306992A

CN103306992A - Ventilator

Info

Publication number: CN103306992A
Application number: CN2012100661611A
Authority: CN
Inventors: 卢贤楷
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-09
Filing date: 2012-03-09
Publication date: 2013-09-18

Abstract

The invention discloses a ventilator. Tornado gives people the enlightenment that rotating air can cause low air pressure and can be transferred downwards for an extremely long distance. According to the principle of the tornado, a mathematical equation of the ventilator is deduced, and a mechanism of two coaxial wind wheels in the same rotation direction is designed, so that the ventilator of which the suction height reaches 900 mm in a free space is realized and the simulation of natural tornado by human beings is realized.

Description

A kind of ventilator

Affiliated technical field

The present invention relates to a kind of ventilating machinary, especially have the ventilator of powerful suction.

Technical background

Water pump has the journey of suction and lift.Blower fan is never referred to the suction journey.Fan performance curve does not provide the suction journey yet.All documents, technical data are all take existing fan characteristic as foundation.For attractive in appearance, the airport hall, deluxe restaurant is to adopt " dilution ventilation ", consumes huge energy and guarantees the fresh of air.No matter be that axial fan or centrifugal blower suction are all very faint, for example, blower fan is made range hood, because suction is inadequate, only have the place of intake grill layout at as close as possible pot.This layout has been destroyed the attractive in appearance of kitchen integral body, and because too near by ear, noise is also large.For the island formula kitchen range top, side-suction type range hood can't be installed at all.Drive ventilates, and tunnel ventilation all needs the large ventilator of suction, and the unfortunate whole world all neither one company can provide.

In addition, human in order to understand tornado, studying always and measuring tornado.The NASA of NASA, American National ocean and air management office, according to starving magnificent university, to the research of tornado because the danger of measuring and difficulty, its result always like like but not.Under the free atmosphere environment, realize low power tornado machine for one, can be used for detailed experiment measuring with the mathematical model of the precision of setting up tornado, also need in a hurry for the reach of science.

Summary of the invention

The power of tornado always is celebrated with its huge destructiveness.Its suction journey reaches several kms.Its enlightenment is that the air of rotation can cause lowpressure, and the far distance of going down.Can according to such imagination, realize this effect?

Technological scheme of the present invention is as follows:

A turning radius is r, and angular velocity is the air-flow of ω, and its static pressure is p, then has:

P/ γ=1/2g* ω ²* r ²+ p _o/ γ (formula 1)

Herein, γ is the proportion of air

p _oBe the whirlpool center, the static pressure when radius r is zero is 0.

G is gravity accleration

Fig. 1 is for realizing the principle schematic of tornado.It is two coaxial wind wheels in the same way.This figure only is an example, and wind wheel can be two or more.Figure 1A is side cutaway view, and Figure 1B is worm's eye view.

Represent the air that flows, the air that the set expression of point is static with the dotted line of arrow among Figure 1A.1 is wind wheel.The inlet radius of first wind wheel is r in the wind wheel ₁, static pressure is p ₁, going out port radius is r ₂, corresponding static pressure is p ₂Equally, the inlet radius of second wind wheel is r ₃, static pressure is p ₃, going out port radius is r ₄Corresponding static pressure is p ₄The air that rotation is risen is tangentially dished out along the wind wheel circumference through wind wheel outlet 4, and any blocking can not be arranged, and makes the static pressure p of Air Flow ₄Equal the pressure of environment, i.e. barometric pressure, that is:

p ₄＝p _at

From formula 1, p is arranged ₂/ p ₁=r ₂ ²/ r ₁ ², p ₃/ p ₂=r ₃ ²/ r ₂ ²

p ₄/ p ₃=r ₄ ²/ r ₃ ²Or p _At/ p ₃=r ₄ ²/ r ₃ ²Therefore,

Have: p _At/ p ₃* p ₃/ p ₂* p ₂/ p ₁=r ₄ ²/ r ₃ ²* r ₃ ²/ r ₂ ²* r ₂ ²/ r ₁ ²

p ₁＝p _at/(r ₄ ²/r ₃ ²*r ₃ ²/r ₂ ²*r ₂ ²/r ₁ ²)

Therefore, be provided with N the coaxial mechanism that consists of with the wind wheel of sense of rotation, the static pressure p at its center ₁=p _At/ (r _2N ²/ r _2N-1 ²* r _2N-1 ²/ r _2N-2 ²* ... r ₂ ²/ r ₁ ²) (formula 2) this relation also is practically applicable to comprise any fluid of water, and the fluid machineries such as making New type water pump.Example: work as N=2, r ₁=200mm, r ₂=250mm, r ₃=400mm, r ₄=430mm

Have: p ₁-p _At/ 7.25, when testing in Chengdu, barometric pressure is 975mbar, and p1 equals 134mbar, is significantly less than barometric pressure.Experiment confirm the air-flow of tornado occurred, such as Fig. 2. for comparison purpose, see natural tornado Fig. 3.

The large 900mm of journey inhales in the mechanism of useful effect: Fig. 2, and power is 300 watts, becomes state-of-the-art range hood power.

In order to guarantee that air-flow can tangentially dish out on the circumference of horizontal plane after rising to the summit, at structural representation Fig. 1 baffle plate 2. is arranged

Description of drawings

Figure 1A is the principle schematic of this machine: it is the side-looking section of a solid of rotation.2 is baffle plates, with the air-flow that the dotted line of arrow rises for rotation, and the atmosphere that the set of point representative is static.

Figure 1B is the worm's eye view of this machine: it has two coaxial wind wheels with sense of rotation.The inlet radius of first wind wheel is r in the wind wheel ₁, static pressure is p ₁, going out port radius is r ₂, corresponding static pressure is p ₂Equally, the inlet radius of second wind wheel is r ₃, static pressure is p ₃, going out port radius is r ₄Corresponding static pressure is p ₄The air that rotation is risen is tangentially dished out along the wind wheel circumference through wind wheel outlet 4.

Fig. 2 is Experimental equipment.

Fig. 3 is the tornado that occurs across the sea.

Claims

Principle

A turning radius is r, and angular velocity is the air-flow of ω, and its static pressure is p, then has:

P/ γ=1/2g* ω ²* r ²+ p _o/ γ (formula 1)

Herein, γ is the proportion of air

p _oBe the whirlpool center, the static pressure when radius r is zero is 0.

G is gravity accleration

Fig. 1 is the principle schematic of the mechanism of realization tornado.It is two coaxial wind wheels in the same way.This figure only is an example, and wind wheel can be two or more.Figure 1A is side cutaway view, and Figure 1B is worm's eye view.Represent the air that flows, the air that the set expression of point is static with the dotted line of arrow among Figure 1A.1 is wind wheel.The inlet radius of first wind wheel is r in the wind wheel ₁, static pressure is p ₁, going out port radius is r ₂, corresponding static pressure is p ₂Equally, the inlet radius of second wind wheel is r ₃, static pressure is p ₃, going out port radius is r ₄Corresponding static pressure is p ₄The air that rotation is risen is tangentially dished out along the wind wheel circumference through wind wheel outlet 4, and any blocking can not be arranged, and makes the r of Air Flow ₁Static pressure equals the pressure of environment, i.e. barometric pressure, that is:

p ₄＝p _at

From formula 1, p is arranged ₂/ p ₁=r ₂ ²/ r ₁ ², p ₃/ p ₂=r ₃ ²/ r ₂ ²

p ₄/ p ₃=r ₄ ²/ r ₃ ²Or p _At/ p ₃=r ₄ ²/ r ₃ ²Therefore, have: p _At/ p ₃.p ₃/ p ₂P ₂/ p ₁-r ₄ ²/ r ₃ ²* r ₃ ²/ r ₂ ²* r ₂ ²/ r ₁ ²

p ₁-p _at/(r ₄ ²/r ₃ ²*r ₃ ²/r ₂ ²*r ₂ ²/r ₁ ²)

Therefore, be provided with N the coaxial mechanism that consists of with the wind wheel of sense of rotation, the static pressure p at its center ₁-p _At/ (r _2N ²/ r _2N-1 ²* r _2N-1 ²/ r _2N-2 ²* ... r ₂ ²/ r ₁ ²) (formula 2).
Structure

Fig. 1 is for realizing the principle schematic of tornado.It is two coaxial wind wheels with sense of rotation.This figure only is an example, and wind wheel can be two or more.Figure 1A is side cutaway view, and Figure 1B is worm's eye view.

1 is wind wheel.The inlet radius of first wind wheel is r in the wind wheel ₁, static pressure is p ₁, going out port radius is r ₂, corresponding static pressure is p ₂Equally, the inlet radius of second wind wheel is r ₃, static pressure is p ₃, going out port radius is r ₄Corresponding static pressure is p ₄The air that rotation is risen is tangentially dished out along the wind wheel circumference through wind wheel outlet 4, and any blocking can not be arranged, and makes the static pressure p of Air Flow ₄Equal the pressure of environment, i.e. barometric pressure, that is:

p ₄＝p _at。
In claim 2

The air that rotation is risen is tangentially dished out along the wind wheel circumference through wind wheel outlet 4, and any blocking can not be arranged, and makes the static pressure p of Air Flow ₄Equal the pressure of environment, i.e. barometric pressure, namely

p ₄＝p _at。
In claim 2

In order to guarantee that air-flow can tangentially dish out on the circumference of horizontal plane after rising to the summit, at structural representation Fig. 1 baffle plate 2 is arranged.
In claim 1 and 2 in example

Example: work as r _1-200mm, r ₂=250mm, r ₃=400mm, r ₄=430mm

Have: p ₁-p _At/7.25, when testing in Chengdu, barometric pressure is 975mbar, p1 equals 134mbar, is significantly less than barometric pressure.Experiment confirm the air-flow of tornado occurred, such as Fig. 2.
Fig. 2 in the claim 5.
Formula 2 these relations also are practically applicable to comprise any fluid of water in the claim 1, and the fluid machineries such as making New type water pump.