CN105178831B - A kind of Optimization Design of shutter sunshade leaded light louvre blade - Google Patents

Abstract

The invention discloses the Optimization Design of a kind of shutter sunshade leaded light louvre blade, the sunshade leaded light louvre blade designed according to this method is applied to fixed knot when shutter, no matter the sun is in eminence or lower, the sunlight being irradiated to this louvre blade light guide section can be directed to indoor vertical-depth, the sunlight being irradiated to this louvre blade light-reflecting portion also can be reflected to outdoor and no longer be reflected to the back side of an adjacent louvre blade so that the louvre blade back side just can eliminate dazzle without carrying out special handling；And the sunshade leaded light louvre blade designed according to this method is when being applied to variable pitch window shutter, the ratio of the cross-sectional width that the light guide section of louvre blade can account for whole louvre blade improves, make shutter can reflect more unwanted sunlight in summer, the more sunlight for heating is imported in winter, obtain more preferable energy-saving effect, it addition, variable pitch window shutter can also be made can to keep optimal transparency.

Description

A kind of Optimization Design of shutter sunshade leaded light louvre blade

Technical field

The present invention relates to a kind of louvre blade method for designing, more specifically, it relates to a kind of BAIYE The Optimization Design of window sunshade leaded light louvre blade.

Background technology

It is known that minute surface orienting reflex louvre blade is made up of light-reflecting portion and light guide section, light-reflecting portion To irradiate sunlight orienting reflex thereon to outdoor, sunlight thereon for irradiations is oriented and leads by light guide section Entering to indoor, usual light guide section is the minute surface cylinder being bent upwards, and light-reflecting portion then has two kinds not With the cylinder form of cross section, a kind of is the arc cylinder being bent upwards of primary event, another Kind be the cross section with secondary reflection be zigzag cylinder.Such as Deutsche Bundespatent DE19503293A1, DE19543812A1, DE10260711A1 disclose light-reflecting portion and leaded light The cambered surface louvre blade that what portion was the most for once reflected be bent upwards, the defect of this class louvre blade is Rated wind velocity is poor, when shutter is closed, louvre blade cannot be of completely closed so that be at the sun The sunlight being irradiated to louvre blade light guide section during lower reflexes to the back side of a piece of louvre blade and turns Enter to indoor, thus fail to reach the state of indoor complete darkness, in order to overcome these defects, DE19828542A1, DE19929138A1, DE102010005054A1 disclose a kind of Z-shaped Minute surface louvre blade.But, the minute surface louvre blade of above-mentioned public announcement of a patent application has a defect, I.e. when the sun is in lower, the sunlight being irradiated to minute surface louvre blade light-reflecting portion all can reflex to The back side of one adjacent louvre and cause dazzle and solar heat stayed within, the most quite A part of sunlight is not blocked by louvre blade and is directly entered indoor, when the sun is in eminence, shines The sunlight being mapped to minute surface louvre blade light guide section cannot import to indoor vertical-depth.Above-mentioned minute surface BAIYE Sheet is the most all only applied to traditional fixed knot on shutter, and once louvre blade is somewhat toward turning up Turn, then the sunlight being irradiated on louvre blade will be unable to reflect according to default opticpath and lead Enter.In order to overcome this defect, Chinese invention patent CN102839909B, CN101818616B Successively disclose several variable pitch window shutter, by change and the rotation of louvre blade of louvre blade spacing Turn fine setting to adapt to dynamic sunlight so that the sunlight being irradiated on louvre blade is according to default light Thread path reflection and importing.But above-mentioned Z-shaped minute surface louvre blade is applied to variable pitch window shutter Time, there will be equally and be in the sunlight of relatively low sun altitude when being irradiated to minute surface louvre blade, fall The back side of an adjacent louvre can be reflexed at the sunlight of louvre blade light-reflecting portion and cause dazzle And solar heat is stayed within, when the sun is in eminence, it is irradiated to minute surface louvre blade and leads The sunlight in light portion cannot be directed to indoor vertical-depth.

Summary of the invention

The invention provides the Optimization Design of a kind of shutter sunshade leaded light louvre blade, according to The sunshade leaded light louvre blade that this optimization method designs is applied to fixed knot when shutter, No matter the sun is in eminence or lower, the sunlight being irradiated to this louvre blade light guide section can be by Importing to indoor vertical-depth, the sunlight being irradiated to this louvre blade light-reflecting portion also can be reflected to Outdoor and be no longer reflected to the back side of an adjacent louvre blade so that the louvre blade back side without Carry out special handling and just can eliminate dazzle；And the sunshade leaded light hundred designed according to this method When blade applications is to variable pitch window shutter, the light guide section of louvre blade can be accounted for whole louvre blade The ratio of cross-sectional width brings up to about 70% so that shutter can be more in reflection in summer Unwanted sunlight, imports the more sunlight for heating in winter, it is thus achieved that the most energy-conservation Effect, it addition, no matter the sun is in eminence or lower, variable pitch window shutter can keep Good transparency.

The technical scheme is that the optimization design side of a kind of shutter sunshade leaded light louvre blade Method, is applied to have on the sunshade leaded light shutter of high-order louvre blade and low level louvre blade, high-order Louvre blade and low level louvre blade are respectively provided with the light-reflecting portion by outside and the light guide section by indoor, Light-reflecting portion and light guide section are arcwall face, and the method comprises the following steps:

A. determine a design point according to shutter axial dimension and louvre blade pitch requirements, set design At Dian, sun altitude is H_d, on high-order louvre blade cross section light-reflecting portion outer end reflection light with The angle of horizontal plane is γ_a, on high-order louvre blade cross section light-reflecting portion apex reflection light with The angle of horizontal plane is γ_b, the apex reflection light of light guide section on high-order louvre blade cross section It is β with the angle of horizontal plane_b, the inner reflection light of light guide section on high-order louvre blade cross section It is β with the angle of horizontal plane_d1, on low level louvre blade cross section between light-reflecting portion and light guide section The angle of partition plane and vertical plane be δ₂, point at the bottom of light guide section on low level louvre blade cross section Reflection light in place's is β with the angle of horizontal plane_c, light guide section is inner on low level louvre blade cross section Reflection light is β with the angle of horizontal plane_d2；

B. the horizontal attitude that louver sheet is under open mode is chosen, horizontal with high-order louvre blade On cross section, initial point is measured in inner conduct, sets summit on actual high-order louvre blade cross section paramount The horizontal range of louvre blade the inner, position is L_bd, measure initial point to the water of high-order louvre blade outer end Flat distance is L；

C. determine on high-order louvre blade cross section in summit and high-order louvre blade according to following optimization formula The angle α of string plane and horizontal plane that line is formed between end₁, push up on high-order louvre blade cross section The angle δ of the string plane that between point and high-order louvre blade outer end, line is formed and vertical plane₁, anti- Light portion cambered surface radius R_ab, light guide section cambered surface radius R_bd:

${\mathrm{\α}}_1=\frac{2H_d-({\mathrm{\β}}_b+{\mathrm{\β}}_{d1})}{4}$

${\mathrm{\δ}}_1=\frac{2H_d+({\mathrm{\γ}}_a+{\mathrm{\γ}}_b)}{4}$

${\stackrel{\‾}{R}}_{bd}=\frac{{\stackrel{\‾}{L}}_{bd}}{2{\mathrm{cos\α}}_1\sin \frac{{\mathrm{\β}}_{d1}-{\mathrm{\β}}_b}{4}}$

${\stackrel{\‾}{R}}_{ab}=\frac{1-{\stackrel{\‾}{L}}_{bd}}{2{\mathrm{sin\δ}}_1\sin \frac{{\mathrm{\γ}}_a-{\mathrm{\γ}}_b}{4}}$

In formula ${\stackrel{\‾}{R}}_{bd}=R_{bd}/L,{\stackrel{\‾}{R}}_{ab}=R_{ab}/L,{\stackrel{\‾}{L}}_{bd}=L_{bd}/L;$

D. same method, determines on low level louvre blade cross section end point and low according to following optimization formula The angle α of string plane and horizontal plane that line is formed between louvre blade the inner, position₂, low level BAIYE Light guide section cambered surface radius R on sheet cross section_cd:

${\mathrm{\α}}_2=\frac{-2H_d+({\mathrm{\β}}_c+{\mathrm{\β}}_{d2})}{4}$

${\stackrel{\‾}{R}}_{cd}=\frac{{\stackrel{\‾}{L}}_{bd}(1-{\mathrm{tan\α}}_1{\mathrm{tan\δ}}_2)}{2(1+{\mathrm{tan\α}}_2{\mathrm{tan\δ}}_2){\mathrm{cos\α}}_2\sin \frac{{\mathrm{\β}}_{d2}-{\mathrm{\β}}_c}{4}}$

In formula ${\stackrel{\‾}{R}}_{cd}=R_{cd}/L.$

The sunshade light-guiding function of louvre blade is to come real by light-reflecting portion, light guide section to the reflection of sunlight Existing.Though high-order louvre blade is identical with low level louvre blade light-reflecting portion shape, but overall structure is Difference, high-order louvre blade is generally splayed, and low level louvre blade is the most Z-shaped, low level hundred On blade, light guide section a branch of reflection light is led than on high-order louvre blade with the minimum angle of horizontal plane The a branch of reflection in light portion light is bigger with the minimum angle of horizontal plane, therefore light-reflecting portion, high-order BAIYE Cambered surface radius at the light guide section of sheet and the light guide section three of low level louvre blade needs to carry out respectively excellent Change design so that shutter can farthest shield light and eliminate dizzy when need not photo-thermal Light, and farthest light imported indoor when needs photo-thermal and eliminate dazzle, if By the method progressively amendment design repeatedly tested to reach optimum efficiency, can expend huge undoubtedly Time and expense, and the method using the present invention to provide, only easily need to survey easily-controllable by giving some Design parameter, just can determine the cambered surface radius at three accurately, easily, greatly save the time And expense, reduce design cost, shorten product development cycle.

As preferably,Span be 0.5～0.8,Reflect louvre blade light to lead Entering the choice of amount, value is the biggest, and light import volume is the biggest.

As preferably, sun altitude H at design point_dSpan be 35 °～45 °, Choosing this value can allow designed louvre blade preferably high at high sun altitude and the low sun Reflective and the light guide effect optimized is reached in the range of two, angle of degree.

As preferably, γ_aSpan be 70 °～88 °, γ_bSpan be 40 °～50 °.Determine that these spans are preferably to meet actual requirement for louvre blade, Light is avoided to reflex to the back side of an adjacent louvre.

As preferably, β_bSpan be 0～20 °, β_d1Span be 55 °～ 85°.Determine that these spans are preferably to meet actual requirement for louvre blade, it is to avoid light Line reflection is to the back side of a upper adjacent louvre.

As preferably, β_cSpan be 45 °～55 °, β_d2Span be 80 °～88 °.Determine that these spans are preferably to meet actual requirement for louvre blade, Light is avoided to reflex to the back side of an adjacent louvre.

As preferably, δ₂Span be 10 °～45 °.Determine that these spans are Actual requirement is preferably met, it is to avoid light is produced by the partition plane of louvre blade for louvre blade Interfere.

As preferably, after completing step A-D, by light guide section and the low level hundred of high-order louvre blade The light guide section of blade is made vertically down to translate, and increases the position drop between light guide section and light-reflecting portion. By this design change, light guide section and the low level hundred of high-order louvre blade can be adjusted as required A branch of reflection light of the light guide section of blade and the minimum angle of horizontal plane, also can strengthen high-order BAIYE The bending strength of sheet.

The invention has the beneficial effects as follows:

The present invention can make louvre blade obtain optimized design, and the louvre blade so produced can be needing The light wanted imports indoor, and unnecessary light is effectively shielded, thus meets people couple Indoor thermal comfort and the requirement of visual adaptability, obtain more preferable energy-saving effect.

Accompanying drawing explanation

The cross-sectional view of Fig. 1 shutter high position louvre blade and geometric parameter；

The cross-sectional view of Fig. 2 shutter low level louvre blade and geometric parameter；

Two points of variable pitch window shutter high position louvre blade cell cross-section of Fig. 3 single and geometric parameter；

Two points of variable pitch window shutter low level louvre blade cell cross-section of Fig. 4 single and geometric parameter；

When two points of variable pitch window shutter of Fig. 5 single are in space D/2, high position louvre blade unit is too Sun elevation angle design point H_dReflective and light guide effect figure at=45 °；

When two points of variable pitch window shutter of Fig. 6 single are in space D/2, low level louvre blade unit is too Sun elevation angle design point H_dReflective and light guide effect figure at=45 °.

Two points of variable pitch window shutter of Fig. 7 a-7b single change pitch when different sun altitude With the reflective of the high-order louvre blade of the louvre blade anglec of rotation and light guide effect figure.

Two points of variable pitch window shutter of Fig. 8 a-8b single change pitch when different sun altitude With the reflective of the low level louvre blade of the louvre blade anglec of rotation and light guide effect figure.

Fig. 9 fixed knot changes pitch and louvre blade rotation away from shutter when different sun altitude Reflective and the light guide effect figure of the high-order louvre blade of corner.

Figure 10 fixed knot changes pitch and louvre blade rotation away from shutter when different sun altitude Reflective and the light guide effect figure of the low level louvre blade of corner；

The light guide section of Figure 11 high position louvre blade vertically move down after reflective with light guide effect figure；

The light guide section of Figure 12 low level louvre blade vertically move down after reflective with light guide effect figure.

Detailed description of the invention

The invention will be further described for specific embodiment below in conjunction with the accompanying drawings.

Embodiment 1:

The Optimization Design of a kind of shutter sunshade leaded light louvre blade, is applied to have from indoor The high-order louvre blade of ground more than 1.7m and the low level hundred between the 1m to 1.7m of flooring On the sunshade leaded light shutter of blade, high-order louvre blade cross section is splayed, low level louvre blade Cross section is Z-shape, and high-order louvre blade and low level louvre blade are respectively provided with the light-reflecting portion by outside 11 and by the light guide section of indoor, light-reflecting portion 11 and light guide section are arcwall face, the method bag Include the following step:

A. determine a design point according to shutter axial dimension and louvre blade pitch requirements, set At design point, sun altitude is H_d, light-reflecting portion 11 outer end reflection on high-order louvre blade cross section Light is γ with the angle of horizontal plane_a, light-reflecting portion 11 apex is anti-on high-order louvre blade cross section The angle penetrating light and horizontal plane is γ_b, high-order louvre blade is guide-lighting on high-order louvre blade cross section The apex reflection light in portion 12 is β with the angle of horizontal plane_b, on high-order louvre blade cross section The inner reflection light of high-order louvre blade light guide section 12 is β with the angle of horizontal plane_d1, low level hundred Partition plane 24 between light-reflecting portion 11 and low level louvre blade light guide section 22 on leaf cross-section It is δ with the angle of vertical plane₂, low level louvre blade cross section reflects at light guide section 12 end point light Line is β with the angle of horizontal plane_c, light guide section 12 inner reflection light on low level louvre blade cross section Line is β with the angle of horizontal plane_d2；

B. the horizontal attitude that louver sheet is under open mode, the most each louvre blade are chosen Between pitch attitude when reaching maximum and do not deflect, with inner on high-order louvre blade cross section As measuring initial point, set summit on actual high-order louvre blade cross section inner to high-order louvre blade Horizontal range be L_bd, to measure initial point to the horizontal range of high-order louvre blade outer end be L, measurement Initial point is h to the vertical dimension on summit_ab；

C. summit and high-order BAIYE on high-order louvre blade cross section are determined according to following optimization formula The angle δ of the light-reflecting portion string plane 11 ' that between sheet outer end, line is formed and vertical plane₁, reflective Portion 11 cambered surface radius R_ab, high-order louvre blade light guide section 12 cambered surface radius R_bd:

${\mathrm{\α}}_1=\frac{2H_d-({\mathrm{\β}}_b+{\mathrm{\β}}_{d1})}{4},$

${\mathrm{\δ}}_1=\frac{2H_d+({\mathrm{\γ}}_a+{\mathrm{\γ}}_b)}{4},$

${\stackrel{\‾}{R}}_{bd}=\frac{{\stackrel{\‾}{L}}_{bd}}{2{\mathrm{cos\α}}_1\sin \frac{{\mathrm{\β}}_{d1}-{\mathrm{\β}}_b}{4}},$

${\stackrel{\‾}{R}}_{ab}=\frac{1-{\stackrel{\‾}{L}}_{bd}}{2{\mathrm{sin\δ}}_1\sin \frac{{\mathrm{\γ}}_a-{\mathrm{\γ}}_b}{4}},$

In formula ${\stackrel{\‾}{R}}_{bd}=R_{bd}/L,{\stackrel{\‾}{R}}_{ab}=R_{ab}/L,{\stackrel{\‾}{L}}_{bd}=L_{bd}/L;$

D., after determining high-order louvre blade, on the basis of high-order louvre blade, low level hundred is designed Blade, owing to the light-reflecting portion of low level louvre blade is identical with the light-reflecting portion of high-order louvre blade, only It needs to be determined that several parameter alpha of low level louvre blade light guide section₂And R_cd.Given low level louvre blade Cut off the angle δ of plane 24 and vertical plane₂, then low level can be determined according to following optimization formula The low level louvre blade that on louvre blade cross section, between end point and low level louvre blade the inner, line is formed is led Light portion string plane 22 ' and the angle α of horizontal plane₂, light guide section 22 on low level louvre blade cross section Cambered surface radius R_cd:

${\mathrm{\α}}_2=\frac{-2H_d+({\mathrm{\β}}_c+{\mathrm{\β}}_{d2})}{4},$

${\stackrel{\‾}{R}}_{cd}=\frac{{\stackrel{\‾}{L}}_{bd}(1-{\mathrm{tan\α}}_1{\mathrm{tan\δ}}_2)}{2(1+{\mathrm{tan\α}}_2{\mathrm{tan\δ}}_2){\mathrm{cos\α}}_2\sin \frac{{\mathrm{\β}}_{d2}-{\mathrm{\β}}_c}{4}},$

In formula ${\stackrel{\‾}{R}}_{cd}=R_{cd}/L.$

Fig. 1 shows cross-sectional view and the geometric parameter of shutter high position louvre blade, high-order BAIYE Sheet is made up of light-reflecting portion 11 and high-order louvre blade light guide section 12 two parts, light-reflecting portion 11 and height Position louvre blade light guide section 12 is arcwall face, and in Fig. 1, a is the outer end of high-order louvre blade, d₁For The inner of high-order louvre blade, high-order louvre blade summit b for high-order louvre blade light-reflecting portion 11 with lead The intersection in light portion 12, L is high-order louvre blade outer end a and inner d₁Between transversal face width Degree, L_bdFor the horizontal range of b to high-order louvre blade the inner d, α₁For high-order louvre blade summit B and inner d₁The high-order louvre blade light guide section string plane 12 ' that formed of line and horizontal plane Angle, δ₁Light-reflecting portion string plane 11 ' and the angle of vertical plane, R for high-order louvre blade_ab For the radius of high-order louvre blade light-reflecting portion 11, R_bdFor the radius of high-order louvre blade light guide section 12, h_abFor the vertical dimension of high-order louvre blade outer end a to summit b, referred to as high position louvre blade Visual field barrier height；Fig. 2 shows that shutter low level louvre blade and high-order louvre blade are combined Cross-sectional view, low level louvre blade by light-reflecting portion 11, low level louvre blade light guide section 22 and cut off Plane 24 3 part forms, the light-reflecting portion 11 of low level louvre blade and the light-reflecting portion of high position louvre blade 11 is identical, and the partition plane 24 of low level louvre blade is one and vertical plane angle is δ₂Incline Tapered plane, the light guide section 22 of low level louvre blade is arcwall face, the outer end a of low level louvre blade, Summit b overlaps with high-order louvre blade, the inner d of high-order louvre blade₁With low level louvre blade Inner d₂Coincide with d point, the end point c of low level louvre blade be low level louvre blade light guide section 22 with Cut off the junction of plane 24, α₂End point c and inner d for low level louvre blade₂Line shape The low level louvre blade light guide section string plane 22 ' become and the angle of horizontal plane, R_cdFor low level BAIYE The cambered surface radius of sheet light guide section 22.

Fig. 3 show two points of variable pitch window shutter high position louvre blade cell cross-section figures of single with Geometric parameter, wherein group one main louvre blade 90, group two main louvre blades 90 ' they are main louvre blade, 91 is louvre blade of group, and the pitch of two adjacent main louvre blades 90,90 ' is D, and group is once Louvre blade 91 can move up and down between two adjacent main louvre blades until two adjacent main louvre blades Organize a main louvre blade 90, group two main louvre blade 90 ' centre positions, i.e. D/2, each louvre blade Outdoor end be followed successively by a, a ', a ", the indoor end of each louvre blade is followed successively by d, d ', d ", The incident ray of design point is followed successively by 41,42,43, and each light is respectively radiated to each louvre blade Outer end on, the sun altitude of design point is H_d, reflect at a of louvre blade light-reflecting portion 11 Light 51 is γ with the angle of horizontal plane_a, at the b of louvre blade light-reflecting portion 11, reflect light 52 It is γ with the angle of horizontal plane_b, at the b of louvre blade light guide section 12, reflect light 61 and level The angle in face is β_b, the d of louvre blade light guide section 12₁Place's reflection light 62 and the folder of horizontal plane Angle is β_d1。

Fig. 4 show two points of variable pitch window shutter low level louvre blade cell cross-section figures of single with Geometric parameter, as Fig. 3, wherein group one main louvre blade 90, group two main louvre blades 90 ' Being main louvre blade, organizing a louvre blade 91 is time louvre blade, two adjacent main louvre blades 90,90 ' Pitch be D, organizing a louvre blade 91 can be between two adjacent main louvre blade 90,90 ' Move up and down until two adjacent main louvre blade 90,90 ' centre position, i.e. D/2, each louvre blade Outer end be followed successively by a, a ', a ", the inner of each louvre blade is followed successively by d₂、d₂’、d₂", The incident ray of design point is followed successively by 44,45, and the sun altitude of design point is H_d, BAIYE The parameters of sheet light-reflecting portion 11 is identical with Fig. 3, anti-at the c of louvre blade light guide section 22 The angle penetrating light 63 and horizontal plane is β_c, the d of louvre blade light guide section 22₂Place's reflection light 64 is β with the angle of horizontal plane_d2。

The transparency Г of shutter is typically determined by formula below:

$\mathrm{\Γ}=1-\frac{h_{ab}}{D}=1-\frac{1-{\stackrel{\‾}{L}}_{bd}}{\stackrel{\‾}{D}{\mathrm{tan\δ}}_1}$

In formulaFor shutter pitch ratio.

If it is fixed to takeH_d=45 °, γ_a=81.8 °, γ_b=43 °, β_b=9.5 °, β_d1=61 °, β_c=52.6 °, β_d2=86.5 °, δ₂=41 °, then there is α₁=4.88 °, α₂=12.28 °, δ₁=53.7 °,As Fruit takes determines D/L=1.17, then have Г=80%.Fig. 5-6 shows the height determined by above-mentioned data Position louvre blade and the shape of cross section of low level louvre blade and the sun altitude at design point H_dReflective and light guide effect figure when variable pitch window shutter is in D/2 pitch in the case of=45 °, Wherein 4 represent direct sunlight, and 5 represent reflection light, and 6 represent importing light, as seen from the figure, high The reflective cambered surface 11 of position louvre blade and low level louvre blade can will irradiate sunlight thereon well Reflexing to outdoor, the sunlight of the high-order louvre blade light guide section 12 exposing to high-order louvre blade is led Entering to indoor, this importing light is about 10 ° with the minimum angle of horizontal plane, and this shows height Position louvre blade light guide section 12 can well by sunlight gathering to indoor vertical-depth, expose to low The sunlight of position louvre blade light guide section 22 is fed to indoor, and this importing light and horizontal plane are Little angle is 54 °, and this shows that low level louvre blade light guide section 22 can be well by sunlight gathering In the middle part of near windows to indoor top.

Fig. 7 a～Fig. 8 b shows by designing the high-order louvre blade and low level obtained as stated above Two points of variable pitch window shutter of single of louvre blade composition are at different sun altitude H_dIn the case of Reflective with light guide effect figure, herein D/L=1.57, then there is maximum transparency Г=86%, by scheming Visible, no matter the sun is in eminence or lower, by the joint of the louvre blade of variable pitch window shutter Away from change and the means of louvre blade rotary fine adjustment so that high-order louvre blade and low level louvre blade Light-reflecting portion 11 can reflex to outdoor by irradiating sunlight thereon well, eliminates in the past When the sun is in lower, the Z-shaped louvre blade of low level can reflex to one by irradiating sunlight thereon Cause dazzle and heat to flow into indoor defect on the back side of louvre blade, expose to high-order louvre blade It is 10 ° of left sides that the sunlight of light guide section 12 is fed to the light of indoor with the minimum angle of horizontal plane The right side, maximum angle is about 60 °, and this shows that high-order louvre blade light guide section 12 can be well By in the middle part of sunlight gathering to indoor ceiling to vertical-depth, expose to low level louvre blade light guide section It is about 52 ° that the sunlight of 22 is fed to the light of indoor with the minimum angle of horizontal plane, Mitre is less than 90 °, and this shows that sunlight can be led by low level louvre blade light guide section 22 well In the middle part of entering near windows to ceiling, the back of the body of an adjacent louvre will not be reflexed to again simultaneously Portion and cause dazzle, as seen from the figure, about shutter minimum transparency Г=63%, by this Variable pitch window shutter people can eliminate dazzle, it is thus achieved that uniform daylighting, it is also possible to obtain Satisfied indoor and outdoor eye contact.

The high-order louvre blade obtained will be designed as stated above and low level louvre blade is applied to fix During pitch shutter, set D/L=0.85, then have maximum transparency Г=75%, Fig. 9-10 to show Show the shutter of this pitch reflective and guide-lighting effect in the case of different sun altitude H Fruit figure, as seen from the figure, the fixed knot being made up of above-mentioned high-order louvre blade and low level louvre blade is away from hundred Leaf window also can reach the effect similar with above-mentioned single variable pitch window shutter.

Embodiment 2:

If it is fixed to takeH_d=45 °, γ_a=82 °, γ_b=40 °, β_b=5 °, β_d1=62 °, β_c=50 °, β_d2=85 °, δ₂=40 °, then there is α₁=5.75 °, α₂=11.25, δ₁=53 °, ${\stackrel{\‾}{R}}_{ab}=1.72,{\stackrel{\‾}{R}}_{bd}=1.02,{\stackrel{\‾}{R}}_{cd}=\mathrm{1.31.}$ Remaining is with embodiment 1.

Embodiment 3:

In like manner, if taking and determiningH_d=45 °, γ_a=75 °, γ_b=40 °, β_b=10 °, β_d1=62 °, β_c=52 °, β_d2=86.5 °, δ₂=40 °, then there is α₁=4.5 °, α₂=12.13 °, δ₁=51.25 °, ${\stackrel{\‾}{R}}_{ab}=0.84,{\stackrel{\‾}{R}}_{bd}=1.78,{\stackrel{\‾}{R}}_{cd}=\mathrm{2.16.}$ Remaining With embodiment 1.

Embodiment 4:

In like manner, if taking and determiningH_d=35 °, γ_a=85.5 °, γ_b=46.5 °, β_b=6 °, β_d1=57.5 °, β_c=47.5 °, β_d2=82.5 °, δ₂=44 °, then have α₁=1.63 °, α₂=15 °, δ₁=50.5 °, Remaining is with embodiment 1.

The light guide section changing sunshade leaded light louvre blade accounts for the ratio of whole louvre blade cross-sectional width, Utilize above-mentioned formula can obtain required sunshade leaded light louvre blade.

Embodiment 5:

After completing to optimize each step designed, by light guide section and the low level BAIYE of high-order louvre blade The light guide section of sheet vertically moves down, and can adjust light guide section and the low level hundred of high-order louvre blade A branch of reflection light of the light guide section of blade and the minimum angle of horizontal plane, Figure 11 and Figure 12 be by The light guide section of the louvre blade in Fig. 5 with Fig. 6 is vertical move down after obtain, set by Fig. 5 and Fig. 6 High-order louvre blade light guide section in meter, low level louvre blade light guide section original position respectively with dotted line 12, 22 represent, the high-order louvre blade light guide section of Figure 11 and Figure 12, low level louvre blade light guide Do not represent with solid line 12a, 22a, as seen from the figure, the high-order louvre blade light guide section 12 in Fig. 5 The minimum angle of a branch of reflection light and horizontal plane be 9.52 °, the low level BAIYE in Fig. 6 A branch of reflection light of sheet light guide section 22 and the minimum angle of horizontal plane are 53 °, at Fig. 5 and The high-order louvre blade light guide section 12 of Fig. 6, low level louvre blade light guide section 22 be difference after vertically moving down Become 16.2 ° of Figure 11 and 56.3 ° of Figure 12；It addition, the high-order louvre blade of Fig. 5 Light guide section 12 occurs in that a high position after becoming the high-order louvre blade light guide section 12a of Figure 11 after moving down Louvre blade cuts off plane 14, thus the high-order louvre blade cross section in the present embodiment is also in eight words Shape, this high-order louvre blade cuts off the low level of the plane 14 angle value with vertical plane and Fig. 6 The partition plane 24 of louvre blade is identical with the angle value of vertical plane.Remaining is with embodiment 1.

Claims (8)

1. an Optimization Design for shutter sunshade leaded light louvre blade, is applied to have high-order hundred On the sunshade leaded light shutter of blade and low level louvre blade, high-order louvre blade and low level louvre blade Being respectively provided with the light-reflecting portion by outside and the light guide section by indoor, light-reflecting portion and light guide section are equal For arcwall face, it is characterized in that comprising the following steps:

A. determining a design point according to shutter axial dimension and louvre blade pitch requirements, setting sets At enumeration, sun altitude is H_d, reflection light in light-reflecting portion outer end on high-order louvre blade cross section It is γ with the angle of horizontal plane_a, light-reflecting portion apex reflection light on high-order louvre blade cross section Line is γ with the angle of horizontal plane_b, the apex of light guide section is anti-on high-order louvre blade cross section The angle penetrating light and horizontal plane is β_b, the inner of light guide section on high-order louvre blade cross section Reflection light is β with the angle of horizontal plane_d1, light-reflecting portion and leading on low level louvre blade cross section Partition plane between light portion is δ with the angle of vertical plane₂, on low level louvre blade cross section The angle reflecting light and horizontal plane at point at the bottom of light guide section is β_c, low level louvre blade cross section Reflection light in upper light guide section the inner is β with the angle of horizontal plane_d2；

B. the horizontal attitude that louver sheet is under open mode is chosen, with high-order louvre blade On cross section, initial point is measured in inner conduct, and on the actual high-order louvre blade cross section of setting, summit is extremely The horizontal range of high-order louvre blade the inner is L_bd, measure initial point to high-order louvre blade outer end Horizontal range is L；

C. summit and high-order louvre blade on high-order louvre blade cross section are determined according to following optimization formula The angle α of string plane and horizontal plane that line is formed between the inner₁, high-order louvre blade cross section The angle of the string plane that between upper summit and high-order louvre blade outer end, line is formed and vertical plane δ₁, light-reflecting portion cambered surface radius R_ab, light guide section cambered surface radius R_bd:

${\mathrm{\α}}_1=\frac{2H_d-({\mathrm{\β}}_b+{\mathrm{\β}}_{d1})}{4}$

${\mathrm{\δ}}_1=\frac{2H_d+({\mathrm{\γ}}_a+{\mathrm{\γ}}_b)}{4}$

${\stackrel{\‾}{R}}_{bd}=\frac{{\stackrel{\‾}{L}}_{bd}}{2{\mathrm{cos\α}}_{1}sin\frac{{\mathrm{\β}}_{d1}-{\mathrm{\β}}_b}{4}}$

${\stackrel{\‾}{R}}_{ab}=\frac{1-{\stackrel{\‾}{L}}_{bd}}{2{\mathrm{sin\δ}}_{1}sin\frac{{\mathrm{\γ}}_a-{\mathrm{\γ}}_b}{4}}$

In formula

D. end point and low level louvre blade on low level louvre blade cross section are determined according to following optimization formula The angle α of string plane and horizontal plane that line is formed between the inner₂, low level louvre blade cross section Upper light guide section (22) cambered surface radius R_cd:

${\mathrm{\α}}_2=\frac{-2H_d+({\mathrm{\β}}_c+{\mathrm{\β}}_{d2})}{4}$

${\stackrel{\‾}{R}}_{cd}=\frac{{\stackrel{\‾}{L}}_{bd}(1-{\mathrm{tan\α}}_1{\mathrm{tan\δ}}_2)}{2(1+{\mathrm{tan\α}}_2{\mathrm{tan\δ}}_2){\mathrm{cos\α}}_2\sin \frac{{\mathrm{\β}}_{d2}-{\mathrm{\β}}_c}{4}}$

In formula

The most according to claim 1, the Optimization Design of sunshade leaded light louvre blade, is characterized in thatSpan be 0.5～0.8.

The most according to claim 1, the Optimization Design of sunshade leaded light louvre blade, is characterized in that Sun altitude H at design point_dSpan is 35 °～45 °.

The most according to claim 1, the Optimization Design of sunshade leaded light louvre blade, is characterized in that γ_aSpan be 70 °～88 °, γ_bSpan be 40 °～50 °.

The most according to claim 1, the Optimization Design of sunshade leaded light louvre blade, is characterized in that β_bSpan be 0～20 °, β_d1Span be 55 °～85 °.

The most according to claim 1, the Optimization Design of sunshade leaded light louvre blade, is characterized in that β_cSpan be 45 °～55 °, β_d2Span be 80 °～88 °.

7. according to the optimization design side of sunshade leaded light louvre blade according to any one of claim 1 to 5 Method, is characterized in that δ₂Span be 10 °～45 °.

8. according to the optimization design side of sunshade leaded light louvre blade according to any one of claim 1 to 5 Method, is characterized in that after completing step A-D, by light guide section and the low level BAIYE of high-order louvre blade The light guide section of sheet is made vertically down to translate, and increases the position drop between light guide section and light-reflecting portion.