CN106223825A - A kind of rain-proof type air-conditioning sliding sash with disappearing screen window - Google Patents

Abstract

The present invention relates to a kind of screen window, particularly relate to a kind of rain-proof type air-conditioning sliding sash with disappearing screen window, including support and screen window plate, described screen window plate is installed on support, being uniformly provided with some through holes on described screen window plate, described through hole is truncated cone-shaped, and through hole is air inlet near outdoor one end, through hole is gas outlet near indoor one end, and the bore of described air inlet is more than the bore of gas outlet.The invention has the beneficial effects as follows: 1. the via design of truncated cone-shaped is conducive to cooling, ventilation；2. the via design of truncated cone-shaped is the most rainproof；3. use MULTILAYER COMPOSITE shaped material, it is possible to printing opacity, not cracky, can absorb heat；4. use the polylith hinged splicing of screen window plate, convenient use.

Description

A kind of rain-proof type air-conditioning sliding sash with disappearing screen window

Technical field

The present invention relates to a kind of screen window, particularly relate to a kind of rain-proof type air-conditioning sliding sash with disappearing screen window.

Background technology

Screen window (window screen) be block mosquitos and flies worm netted in the middle of become the porose net of grid.Sliding sash with disappearing screen window (roller shutter Screen window) it is the most popular screen window, general sliding sash with disappearing screen window can be from Row sum-equal matrix yarn box inner spring strength, and some yarn boxes are removable Reinforcing of getting off subtracts power, and have also can remove floating dust automatically.Existing sliding sash with disappearing screen window cooling-down effect is poor, and the most rainproof, heat-proof quality is poor, holds Cracky.

Summary of the invention

In order to solve the problems referred to above, the invention provides a kind of rain-proof type air-conditioning sliding sash with disappearing screen window, solve existing stealth Screen window cooling-down effect is poor, the most rainproof, and heat-proof quality is poor, the most damaged problem.

The technical scheme is that: a kind of rain-proof type air-conditioning sliding sash with disappearing screen window, including support and screen window plate, described screen window plate Being installed on support, described screen window plate is uniformly provided with some through holes, described through hole is truncated cone-shaped, and through hole is near outdoor one end For air inlet, through hole is gas outlet near indoor one end, and the bore of described air inlet is more than the bore of gas outlet.

Further, the inner side of described screen window plate is single layer polymethyl formicester plate, and centre is fiber gauze, outside Pressure polymethyl methacrylate plate is covered for multilamellar.

Further, described screen window plate has some pieces, is connected by articulated manner between screen window plate, screen window plate upper and lower Being respectively arranged at two ends with pin, the upper/lower terminal of described support is respectively equipped with the groove matched with pin, one end of described pin It is located in groove.

Further, gemel connection is passed through between described screen window plate.

The invention has the beneficial effects as follows: 1. the via design of truncated cone-shaped is conducive to cooling, ventilation；2. the through hole of truncated cone-shaped sets In respect of the most rainproof；3. use MULTILAYER COMPOSITE shaped material, it is possible to printing opacity, not cracky, can absorb heat；4. use polylith screen window plate Hinged splicing, convenient use.

Accompanying drawing explanation

The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.

Fig. 1 is overall structure schematic diagram of the present invention；

Fig. 2 is the structural representation of screen window plate of the present invention；

Fig. 3 is the structural representation of support of the present invention；

Fig. 4 is that single aperture gas mass flow is along with aperture both sides pressure reduction ratio p2/p1 change curve；

Fig. 5 same gas capacity by speed during the sectional area of both sides with the curve chart of variable density；

Detailed description of the invention

Below in conjunction with accompanying drawing, technical scheme is further described, but the present invention is not limited to these in fact Execute example.

In conjunction with accompanying drawing 1-3, a kind of rain-proof type air-conditioning sliding sash with disappearing screen window, including support 1 and screen window plate 2, described screen window plate 2 has Some pieces, being connected by hinge 21 between screen window plate 2, the upper/lower terminal of screen window plate is respectively equipped with pin 22, described support 1 Upper/lower terminal is respectively equipped with the groove 11 matched with pin 22, and one end of described pin 22 is located in groove 11, described screen window Being uniformly provided with some through holes 23 on plate 2, described through hole is truncated cone-shaped, and through hole 23 is air inlet near outdoor one end, through hole 23 Being gas outlet near indoor one end, the bore of described air inlet is more than the bore of gas outlet.

Cooling about truncated cone-shaped through hole proves:

When compressible gas flows through thin-wall hole, by local resistance effect, in addition to conversion between pressure energy and kinetic energy, also draw Play the change of gaseous state.Owing to other flow through the speed of restriction, can ignore with extraneous heat exchange, i.e. gas Flowing can be approximately considered isentropic flow.

Obtain according to Bernoulli equation:

$\frac{dp}{\mathrm{\ρ}}+udu=0$

During due to constant entropy

$\frac{p}{{\mathrm{\ρ}}^k}=C$

Then have

$\frac{k}{k-1}\frac{p_1}{{\mathrm{\ρ}}_1}=\frac{k}{k-1}\frac{p_c}{{\mathrm{\ρ}}_c}+\frac{V_c^2}{2}$

Can obtain gaseous mass flow equation is

$Q_m=V_c{A}_c\mathrm{\ρ}=\frac{C_c{A}_0{p}_1}{\sqrt{{\mathrm{RT}}_1}}\sqrt{\frac{2k}{k-1}\[{\left(\frac{p_c}{p_1}\right)}^{\frac{2}{k}}-{\left(\frac{p_c}{p_1}\right)}^{\frac{k+1}{k}}\]}$

Generally, gas mass flow equation can be write as with segmentation

$Q_m=\left\{\begin{array}{cc}\frac{C_c{A}_0{p}_1}{\sqrt{{\mathrm{RT}}_1}}\sqrt{\frac{2k}{k-1}\[{\left(\frac{p_c}{p_1}\right)}^{\frac{2}{k}}-{\left(\frac{p_c}{p_1}\right)}^{\frac{k+1}{k}}\]}& (0.528\≤\frac{p_c}{p_1}\≤1)\\ \frac{C_c{A}_0{p}_1}{\sqrt{{\mathrm{RT}}_1}}\sqrt{\frac{2k}{k+1}}{\left(\frac{2}{k+1}\right)}^{\frac{1}{k-1}}& (0\≤\frac{p_c}{p_1}\≤0.528)\end{array}\right.$

In formula, C_CIt it is constriction coefficient；p_cIt is the pressure at the complete necked-down section of gas a fluid stream；K is adiabatic coefficent；ρ is fluid Density；V is the flow velocity of this point of fluid；T is the temperature of this point of fluid.

Accompanying drawing 3 is (hypothesis) ambient temperature when being 20 DEG C, and single aperture gas mass flow is along with aperture both sides pressure reduction ratio Value p2/p1 change curve, when wherein pressure ratio value p2/p1 in aperture both sides is less than 0.528, aperture gas mass flow Qm occurs full And phenomenon；When aperture both sides pressure ratio value p2/p1 is more than 0.528, aperture gas mass flow Qm increases along with p2/p1 and subtracts Little.

During according to second law of thermodynamics Entropy Changes:

The first is assumed:

Heat dQ is reached low temperature (T2) object by high temperature (T1) object, and the entropy of high temp objects reduces dS1=dQ/T1, low temperature The entropy of object increases dS2=dQ/T2, from the point of view of indoor for mouth wall and outdoor two parts are treated as a system altogether, outdoor because of For natural wind action to indoor extruding, import and export the difference of area, because natural pressure air enters into internal orifice by collar extension, make Air acting (absorbs the process of energy), enters into internal orifice temperature and reduces, and again according to the second law of thermodynamics, always high temperature is passed to Low temperature, can draw comprehensive indoor temperature, makes indoor temperature reduce (power consumption is natural wind energy).Because inside and outside differential pressure changes in flow rate makes Room air circulation is accelerated, and indoor are again the spaces of a relative closure, increases principle, air according to second law of thermodynamics entropy The heat of indoor can be taken away.

Calculating through depth analysis: we can be approximately mozzle model, gas flows through mozzle again:

Ideally:

PV=mRT

P=ρ RT

Because of natural pressure and the import and export different dilatancy causing gas of area and contraction when gas is in by mozzle Property derive that to calculate compression ratio different.

$\begin{array}{cc}{\mathrm{\β}}_T=\frac{1}{\mathrm{\υ}}\×\frac{d\mathrm{\υ}}{dT}\left(\frac{1}{K}\right)& {\mathrm{\β}}_P=\frac{1}{\mathrm{\υ}}\×\frac{d\mathrm{\υ}}{dP}\left(\frac{m^2}{N}\right)\end{array}$

In formula: the specific volume (m of υ gas³/ kg), υ=1/ ρ

Also bulk modulus E of gas is commonly used to represent compressibility, i.e. in engineering

$E=\frac{1}{\mathrm{\β}}=-\mathrm{\υ}\frac{dp}{d\mathrm{\ρ}}=\mathrm{\ρ}\frac{dp}{d\mathrm{\ρ}}(N/m^2)$

The coefficient of expansion of gas is relevant with the characteristic of expansion or compression process with the size of coefficient of compressibility, also transmits with heat Number relevant.

Wherein, the Main physical amount related to has four: three thermodynamics scalar parameter pressure P temperature T and density p； And spot speed vector.

These physical quantitys being connected, the equation constituting Closure equation group has four, and they are:

1. according to the mass equation of the principle of mass conservation；2. according to the energy equation of conservation of energy principle；

3. according to the equation of momentum of Newton's second law；4. embody the state equation of gas property.

Can be expressed as according to the principle of mass conservation:

(by the gas net outflow quality of chain of command in the unit interval)+(in unit interval control volume, gaseous mass changes) =0

Its mathematic(al) representation is

The spot speed vector of gas on the dF of infinitesimal face, its scalar is u, m/s；

Exterior normal unit vector on the dF of infinitesimal face, its direction, to flow out for just, flows into as negative.

By Gauss theorem:

Gas stockpiles capacity: V=1/3 × π h (r²+R²+ rR) again same gas capacity by both sides sectional area time speed with Density is different, show that accompanying drawing 4 is similar to curve by experiment test.

Further, since truncated cone-shaped through hole forms outside gradient, so when rainfall, rainwater can glide along with slope, rise To rainproof effect.Further, since screen window plate uses the polylith hinged splicing of screen window plate, conveniently shrink and open, convenient use.

Further, the inner side of described screen window plate is single layer polymethyl formicester plate, and centre is fiber gauze, outside Pressure polymethyl methacrylate plate is covered for multilamellar.

The screen window plate following manufacturing process of employing:

1. pressure sintering

After lucite thin plate heating, middle hot pressing type in a mold.The artware that this molding is made has body Plentiful, curve is smooth, the feature that third dimension is strong, card-cut effect.Hot-die can use timber, greasy filth moulding, then with casting lead, Gypsum material makees matched molds, can be molded after lucite heating.

2. inlaying process

Being cut into by the plexiglass block of different color and take out the geometric figure needed, on base plate, mosaic splicing forms.This Method requires that splicing is tight, and corner angle are striven bright, can receive color strong, but the effect of one integrated mass.

3. after splicing, outmost cover plate is that multilamellar covers pressure polymethyl methacrylate plate, and median fiber gauze, inner side is Single layer polymethyl methyl ester plate.

Screen window plate uses polymethyl methacrylate to make, and this kind of material will not produce dazzle sense, experiences moderate, comfortable； After using MULTILAYER COMPOSITE, can absorb heat.

Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.

Claims (4)

1. a rain-proof type air-conditioning sliding sash with disappearing screen window, it is characterised in that include that support and screen window plate, described screen window plate are installed on and prop up On frame, described screen window plate being uniformly provided with some through holes, described through hole is truncated cone-shaped, and through hole is air inlet near outdoor one end Mouthful, through hole is gas outlet near indoor one end, and the bore of described air inlet is more than the bore of gas outlet.

Rain-proof type air-conditioning sliding sash with disappearing screen window the most according to claim 1, it is characterised in that the inner side of described screen window plate is monolayer Polymethyl methacrylate plate, centre is fiber gauze, and outside is that multilamellar covers pressure polymethyl methacrylate plate.

Rain-proof type air-conditioning sliding sash with disappearing screen window the most according to claim 1 and 2, it is characterised in that described screen window plate has some pieces, Being connected by articulated manner between screen window plate, the upper/lower terminal of screen window plate is respectively equipped with pin, the upper/lower terminal of described support Being respectively equipped with the groove matched with pin, one end of described pin is located in groove.

Rain-proof type air-conditioning sliding sash with disappearing screen window the most according to claim 3, it is characterised in that pass through hinge between described screen window plate Connect.