A kind of aluminium alloy window of the external curtain of band
Technical field
The invention belongs to technical field of living goods, and in particular to a kind of aluminium alloy window of the external curtain of band.
Background technique
Document number is that the Chinese patent literature of CN206792229U discloses a kind of seamless double open foldable curtain, including folds
Curtain mounting rack and the left folding curtain and right folding curtain being mounted on folding curtain mounting rack, the folding curtain installation
Mounting rod is installed on frame, is equidistantly equipped with that fold curtain solid on the upper side edge of the left folding curtain and right folding curtain
Determine device, the mounting rod and folding curtain fastening device activity clamping;It is connected and with the left folding curtain near right folding
Magnetic strip is installed on the folding curtain fastening device of folded curtain side, is connected and with the right folding curtain near left folding
Magnetic strip is also installed on the folding curtain fastening device of curtain side.The seamless double open foldable curtain of one kind of the utility model,
It is connected with left folding curtain and magnetic strip is installed on the folding curtain fastening device of right folding curtain side, with right folding
Folded curtain is connected and is also equipped with magnetic strip, left folding curtain on the folding curtain fastening device of left folding curtain side
Attract fixation by folding the magnetic force of magnetic strip on curtain fastening device when drawing over to one's side with right folding curtain.
The curtain of above-mentioned patent realizes the function of shading, but when user needs bright indoor environment(Work is learned
It practises)When, it will usually curtain is drawn over to one's side the direct light for blocking the sun by selection completely(Together with diffusing), in addition open indoor photograph
Bright lamp.If curtain is not drawn over to one's side completely, it is shining into indoor direct sunlight and is easy to damage the eyes of user.For example it reads a book
Or sight can be impacted using on direct sunlight to books when computer or on display.Certainly, user can be such that curtain hides
The firmly window leaf of part is entered the room as the blocking position of the variation adjustment curtain in direct sunlight direction makes to diffuse, but this
Sample needs more frequently to adjust the position of curtain, inconvenient for use.
Summary of the invention
The technical problem to be solved by the present invention is to:In view of the deficienciess of the prior art, provide can adjust irradiate into
Indoor light, and a kind of aluminium alloy window of the external curtain of band of air filtering can be crossed.
Purpose to realize the present invention, is achieved using following technical scheme:A kind of aluminum window of the external curtain of band
Family, includes the outline border of aluminum alloy material, and the window leaf being slidably connected in the outline border;The outline border front end is located at described
Folding curtain is rotatably connected to above window leaf;The outline border front end, which is equipped with, can drive the length cylinder for folding curtain elongation,
And the angle cylinder of the folding curtain rotation of driving stretching state.
The folding curtain includes more between two groups of symmetrical folding stands, and folding stand described in being fixedly connected on two groups
A solar panels;The folding stand include the setting of multiple parallel equidistants first connecting rod and the setting of multiple parallel equidistants the
Two connecting rods;The adjacent first connecting rod and second connecting rod head and the tail pass sequentially through connecting rod rotation connection;In the first connecting rod
Portion is rotatablely connected in the middle part of second connecting rod also by connecting rod;Two folding stands are connected to by each connecting rod simultaneously
Together, two folding stands are moved synchronously;Three connecting rod upper ends being connected on the same second connecting rod are fixed to be connected
It is connected to the solar panels.
The air accumulator that the length cylinder, the elongation of angle cylinder can be driven is installed in the outline border, and can be driven
Move the length cylinder, the vacuum tank that angle cylinder shortens.
The outer back end of frame forms axial-flow fan installs case;It is equipped in the axial-flow fan installs case for will be outdoor
Air is pumped into indoor axial-flow fan;The outline border front end form with the axial-flow fan bar shaped that is connected to of installation upper box part into
Stomata;The axial-flow fan includes fan base, the impeller being rotatably installed in fan base, and is fixedly connected on fan base one end
Driving wheel rotation motor.
The motor is connected with air pump far from described impeller one end;By the air in the vacuum tank when air pump works
It is extracted into air accumulator.
The outline border rear end lower is equipped with the control panel for length cylinder, angle Telescopic-cylinder.
As prioritization scheme:The inlet chamber being connected to the air accumulator is formed in the control panel;The control plane
Front edge of board is equipped with multiple switch.
Each switch includes the snorkel of front and back perforation, and snorkel rear end is connected to the inlet chamber, the control
Position in panel close to snorkel front end outer wall is fixedly installed with key.
The snorkel side wall position opposite with the key forms effluent mouth;It is fixed on the press head of the key
It is connected with the pressing tablet for blocking the effluent mouth.
The control panel front end be also equipped with for detecting whether someone close to control panel infrared sensor, it is described
Buzzer is also equipped in control panel.
Controller is installed in the outline border;The solar panels, motor, each key, infrared sensor, buzzer point
It is not electrically connected with the controller.
The baroceptor of detection length cylinder interior air pressure is installed on the length cylinder;The baroceptor with
Controller electrical connection.
As prioritization scheme:The angle cylinder is made of a cylinder body and a piston rod;The cylinder body and piston rod
Seal against each other sliding plug.
Cylinder side wall top on the angle cylinder forms angled cylinder connecting tube;The angle cylinder connecting tube will
Air accumulator is connected to angle cylinder respectively with vacuum tank.
The length cylinder is made of a cylinder body and multiple piston rods;The cylinder body and multiple piston rods successively seal cunning
Dynamic grafting.
Cylinder side wall top on the length cylinder forms length cylinder connecting tube;The length cylinder connecting tube will
Air accumulator is connected to length cylinder respectively with vacuum tank.
As prioritization scheme:Outline border front end two sides, which are located above the folding curtain, forms L-shaped cylinder peace
Tankage;The angle cylinder and length cylinder positioned at different perpendiculars is installed in the cylinder mounting groove.
Cylinder mounting groove top forms angled cylinder positioning column;Angle cylinder upper end forms and the angle
Spend the angle articulation head a of positioning column rotation connection;Angle cylinder lower end forms angle articulation head b;The angle articulation
Head b is rotatablely connected with the connecting rod in the middle part of the second connecting rod for being located at the top.
Cylinder mounting groove lower part forms length cylinder positioning column;Length cylinder upper end forms and institute's length
The length articulated joint a of cylinder positioning column rotation connection;Length cylinder lower end forms length articulated joint b;The length hinge
The connecting rod of the first connecting rod front of connector b and the top is rotatablely connected.
Outline border front end two sides, which are located to form below the cylinder mounting groove, folds curtain locating rack;The folding window
The connecting rod rotation connection at rear portion on curtain locating rack and the second connecting rod of the top.
As prioritization scheme:The switch includes switch a, switch b, switch c, switch d, switch e, switch f;The switch
A, switch b, switch c, switch d, switch e, be separately installed with key a, key b, key c, key d, key e, key in switch f
f。
The key a, key b, key c, key d, key e, key f are electrically connected with the controller respectively.
Battery is installed in the outline border;The battery is electrically connected with the controller.
The air pump is piston air pump.
Solenoid valve e is installed between the air accumulator and inlet chamber.
Solenoid valve a is installed between the length cylinder and air accumulator, solenoid valve b is installed between vacuum tank.
Solenoid valve c is installed between the angle cylinder and air accumulator, solenoid valve d is installed between vacuum tank.
The solenoid valve a, solenoid valve b, solenoid valve c, solenoid valve d, solenoid valve e are electrically connected with controller respectively.
Compared with prior art, the beneficial effects of the invention are as follows:User is by operating control panel, gas storage
Tank and vacuum tank work, make to fold curtain can in collapsed state, complete occlusion state and without being converted between direct projection light state,
To reach different use demands.
User is by operating control panel, control motor work, and then achievees the effect that convert air, simultaneously
Gas in vacuum tank can be drawn back in air accumulator.
When infrared sensor is not detected signal, air accumulator not output gas;When infrared sensor detects that user is close,
Air accumulator output gas.Specifically, being sprayed from snorkel front end after the gas in air accumulator is filled in inlet chamber, working as snorkel
When front end is unobstructed, the effluent oral area position close to snorkel front end forms negative pressure(Bernoulli principle), when user is close logical by hand
When tracheae front end(Can contact between finger and snorkel front end can not also contact), gas flow rate decline in snorkel, and formed
Normal pressure, effluent mouth form an exhaust outlet at this time, and pressing tablet, which presses the press head of key under gas pressure, touches key
Hair, controller receives signal, while controlling buzzer and make a sound prompt key and being pressed.Without gas stream in the snorkel
Out-of-date, the gravity deficiency of pressing tablet itself is to press the press head.The control panel side is offered to be connected to effluent mouth
Gas vent.
The switch can be used as contactless inductive switch, relatively sanitary for touch switch,
It is hardly damaged, long service life.As long as guaranteeing the flow velocity of outlet, the distance of reaction switched is not influenced by temperature, stability
Higher than the infrared sensor for being easy to be affected by temperature.Whether infrared sensor in the present invention is only used for detection user close to control
Panel, not as the inductive switch for directly controlling folding curtain movement, therefore to the of less demanding of sensitivity.
When folding curtain is in collapsed state, angle cylinder foreshortens to limiting condition, and length cylinder is extended to limit shape
State, solar ray energy is from the direct projection of window leaf into interior.
When the direct light for needing to block the sun, when keeping indoor bright again(Allow to diffuse and is shining into interior), control
Length cylinder shortens, and angle cylinder is constant, folds curtain elongation, each solar panels horizontal stretching, until length cylinder shortens
It to extreme position, folds curtain and forms a sunshade, the direct light of the sun is radiated on solar panels, and irreflexive light will
It enters the room, and the light that diffusing reflection at this time enters the room is most.
By the elongation for controlling angle cylinder, thus it is possible to vary the intensity of illumination entered the room by diffusing reflection.Specifically,
The elongation of angle cylinder is controlled, curtain rotation is folded, the angle folded between curtain and outline border reduces, the light that diffusing reflection enters the room
It reduces;User can be adjusted according to the hobby and demand of itself.
It when angle cylinder is extended to extreme position, folds curtain and all covers window leaf, fold curtain at this time and be in
Full occlusion state, the state are mainly used for shading(Direct sunlight and diffusing reflection light)Or for blocking sight.
In the state of blocking completely, control length cylinder elongation, solar panels will tilt an angle, and pass through sunlight
That crosses solar panels is refracted into interior, achievees the effect that shutter;By controlling the elongation of length cylinder, refraction is adjusted
Into indoor intensity of illumination.
When needing to fold curtain withdrawal original state, control length cylinder is extended to limiting condition, the contracting of angle cylinder
It is as short as limiting condition.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is collapsed state of the present invention.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 is decomposition texture schematic diagram of the invention.
Fig. 4, Fig. 5 are the structural schematic diagrams of outline border of the present invention.
Structural schematic diagram when Fig. 6 is complete occlusion state of the invention.
Fig. 7 be the present invention without direct projection light state when structural schematic diagram.
Fig. 8 is the structural schematic diagram that the present invention folds curtain.
Fig. 9 is the structural schematic diagram of axial-flow fan of the present invention.
Figure 10 is the structural schematic diagram of length cylinder of the present invention.
Figure 11 is the structural schematic diagram of angle cylinder of the present invention.
Figure 12 is the schematic cross-sectional view of cylinder body and piston rod of the present invention.
Figure 13 is the schematic diagram of the section structure of control panel of the present invention.
Figure 14 is the enlarged structure schematic diagram that the present invention switchs.
Figure 15 is the attachment structure schematic diagram of solenoid valve of the present invention.
Figure 16 is the attachment structure schematic diagram of controller of the present invention.
1, outline border;10, window leaf;11, axial-flow fan installs case;111, interior flange collar;112, bar shaped air inlet;12, cylinder is pacified
Tankage;121, angle cylinder positioning column;122, length cylinder positioning column;13, curtain locating rack is folded;15, control panel is installed
Slot;2, curtain is folded;21, solar panels;22, first connecting rod;23, second connecting rod;24, connecting rod;3, angle cylinder;31, angle
Spend cylinder connecting tube;32, angle articulation head a;33, angle articulation head b;4, length cylinder;401, cylinder body;402, piston rod;41,
Length cylinder connecting tube;42, length articulated joint a;43, length articulated joint b;5, axial-flow fan;51, impeller;52, motor;53, gas
Pump;54, air outlet;6, filter;7, axial-flow fan lid;71, bar shaped air outlet;8, control panel;80, it switchs;81, air inlet
Chamber;82, snorkel;821, effluent mouth;84, key;841, pressing tablet.
Specific embodiment
Embodiment 1
According to Fig. 1 to Figure 16, a kind of aluminium alloy window of the external curtain of band, includes aluminium alloy material described in the present embodiment
The outline border 1 of matter, and the window leaf 10 being slidably connected in the outline border, the window leaf have framework and the company of aluminum alloy material
Connect the glass in framework inner circumferential;The outline border front end, which is located to be rotatably connected to above the window leaf, folds curtain 2;Before the outline border
End, which is equipped with, can drive the length cylinder 4 for folding curtain elongation, and the angle for folding curtain rotation of driving stretching state
Cylinder 3.
The folding curtain includes more between two groups of symmetrical folding stands, and folding stand described in being fixedly connected on two groups
A solar panels 21;The folding stand includes first connecting rod 22 and the setting of multiple parallel equidistants of multiple parallel equidistant settings
Second connecting rod 23;The adjacent first connecting rod and second connecting rod head and the tail pass sequentially through the rotation connection of connecting rod 24;Described
It is rotatablely connected in the middle part of second connecting rod also by connecting rod in the middle part of one connecting rod;Each connecting rod is by two foldings simultaneously
Frame links together, and moves synchronously two folding stands;It is connected in three connecting rods on the same second connecting rod
End is fixedly connected with the solar panels.
The air accumulator that the length cylinder, the elongation of angle cylinder can be driven is installed in the outline border, and can be driven
Move the length cylinder, the vacuum tank that angle cylinder shortens.
The outer back end of frame forms axial-flow fan installs case 11;It is equipped in the axial-flow fan installs case for by room
Outer air is pumped into indoor axial-flow fan 5;The outline border front end forms the item being connected to axial-flow fan installation upper box part
Shape air inlet 112;The axial-flow fan includes fan base, the impeller 51 being rotatably installed in fan base, and is fixedly connected on
The motor 52 of the driving wheel rotation of fan base one end.
Side wall of the fan base of the axial-flow fan close to the outer back end of frame side forms air outlet 54.
It is located at the axial-flow fan top in the axial-flow fan installs case and filter 6 is installed;The axial-flow fan peace
The interior flange collar 111 being fixedly connected with the filter is formed in the middle part of vanning inner wall;The filter be extra large pa filter or
Electrostatic precipitator.
The outer back end of frame position opposite with the axial-flow fan is rotatably connected to axial-flow fan lid 7;The through-flow wind
Fan lid lower part forms the bar shaped air outlet 71 opposite with the air outlet.The top two sides of the axial-flow fan lid and outline border turn
Dynamic connection, enables axial-flow fan lid to be maintained at closed state under self gravitation effect.
When needing to be aerated, the motor impeller rotation makes outdoor air successively pass through bar shaped air inlet, mistake
Filter enters in impeller, then enters the room from air outlet, bar shaped air outlet, and filtered air is pumped into interior by this process,
Improve room air oxygen content.
The motor is connected with air pump 53 far from described impeller one end;By the sky in the vacuum tank when air pump works
Gas is extracted into air accumulator.
The outline border rear end lower is equipped with the control panel 8 for length cylinder, angle Telescopic-cylinder.After the outline border
End lower part forms control panel mounting groove 15;The control panel is fixedly connected in the control panel mounting groove.
The inlet chamber 81 being connected to the air accumulator is formed in the control panel;The control panel front end is equipped with
Multiple switch 80.
Each switch includes the snorkel 82 of front and back perforation, and snorkel rear end is connected to the inlet chamber, the control
Position in panel processed close to snorkel front end outer wall is fixedly installed with key 84;The snorkel is located at the rear end in inlet chamber
Part is bell shape.
The snorkel side wall position opposite with the key forms effluent mouth 821;On the press head of the key
It is fixedly connected with the pressing tablet 841 for blocking the effluent mouth.
The control panel front end be also equipped with for detecting whether someone close to control panel infrared sensor, it is described
Buzzer is also equipped in control panel.
Controller is installed in the outline border;The solar panels, motor, each key, infrared sensor, buzzer point
It is not electrically connected with the controller.
Specifically, the solar panels are electrically connected with the controller by the conductive seat.
When infrared sensor is not detected signal, air accumulator not output gas;When infrared sensor detects that user is close,
Air accumulator output gas.Specifically, being sprayed from snorkel front end after the gas in air accumulator is filled in inlet chamber, working as snorkel
When front end is unobstructed, the effluent oral area position close to snorkel front end forms negative pressure(Bernoulli principle), when user is close logical by hand
When tracheae front end(Can contact between finger and snorkel front end can not also contact), gas flow rate decline in snorkel, and formed
Normal pressure, effluent mouth form an exhaust outlet at this time, and pressing tablet, which presses the press head of key under gas pressure, touches key
Hair, controller receives signal, while controlling buzzer and make a sound prompt key and being pressed.Without gas stream in the snorkel
Out-of-date, the gravity deficiency of pressing tablet itself is to press the press head.The control panel side is offered to be connected to effluent mouth
Gas vent.
The switch can be used as contactless inductive switch, relatively sanitary for touch switch,
It is hardly damaged, long service life.As long as guaranteeing the flow velocity of outlet, the distance of reaction switched is not influenced by temperature, stability
Higher than the infrared sensor for being easy to be affected by temperature.Whether infrared sensor in the present invention is only used for detection user close to control
Panel, not as the inductive switch for directly controlling folding curtain movement, therefore to the of less demanding of sensitivity.
The angle cylinder is made of a cylinder body 401 and a piston rod 402;The cylinder body and piston rod seal against each other
Sliding plug;The cylinder body lower end periphery connects the limit stop ring of restricted piston rod abjection.
Cylinder side wall top on the angle cylinder forms angled cylinder connecting tube 31;The angle cylinder connecting tube
Air accumulator is connected to angle cylinder respectively with vacuum tank.
When the air accumulator is connected with angle cylinder, air accumulator is angle cylinder charge, and cylinder body is mutually slided with piston rod
Elongation;When the vacuum tank is connected with angle cylinder, vacuum tube is the pumping of angle cylinder, and cylinder body and piston rod mutually slide contracting
It is short.
The length cylinder is made of a cylinder body and multiple piston rods;The cylinder body and multiple piston rods successively seal cunning
Dynamic grafting;The cylinder body and each piston rod(In addition to the lowermost piston rod)Front end periphery connects restricted piston rod
The limit stop ring of abjection, each piston rod(In addition to the lowermost piston rod)For circular tube structure, outside each piston rod top
Wall is equipped with piston ring.
Cylinder side wall top on the length cylinder forms length cylinder connecting tube 41;The length cylinder connecting tube
Air accumulator is connected to length cylinder respectively with vacuum tank.
When the gas storage canister length cylinder is connected, air accumulator is length cylinder charge, and cylinder body is mutually slided with piston rod to be stretched
It is long;When the vacuum tank is connected with length cylinder, vacuum tube is the pumping of length cylinder, and cylinder body and piston rod mutually slide shortening.
Outline border front end two sides, which are located above the folding curtain, forms L-shaped cylinder mounting groove 12;The gas
The angle cylinder and length cylinder positioned at different perpendiculars is installed in cylinder mounting groove.
Cylinder mounting groove top forms angled cylinder positioning column 121;Angle cylinder upper end forms and institute
State the angle articulation head a32 of angle positioning column rotation connection;Angle cylinder lower end forms angle articulation head b33;It is described
Angle articulation head b is rotatablely connected with the connecting rod in the middle part of the second connecting rod for being located at the top.
Cylinder mounting groove lower part forms length cylinder positioning column 122;Length cylinder upper end forms and institute
The length articulated joint a42 of length cylinder positioning column rotation connection;Length cylinder lower end forms length articulated joint b43;Institute
State the connecting rod rotation connection of the first connecting rod front of length articulated joint b and the top.
Outline border front end two sides, which are located to form below the cylinder mounting groove, folds curtain locating rack 13;The folding
The connecting rod rotation connection at rear portion on curtain locating rack and the second connecting rod of the top.
When folding curtain is in collapsed state, angle cylinder foreshortens to limiting condition, and length cylinder is extended to limit shape
State, solar ray energy is from the direct projection of window leaf into interior.
When the direct light for needing to block the sun, when keeping indoor bright again(Allow to diffuse and is shining into interior), control
Length cylinder shortens, and angle cylinder is constant, folds curtain elongation, each solar panels horizontal stretching, until length cylinder shortens
It to extreme position, folds curtain and forms a sunshade, the direct light of the sun is radiated on solar panels, and irreflexive light will
It enters the room, and the light that diffusing reflection at this time enters the room is most.
By the elongation for controlling angle cylinder, thus it is possible to vary the intensity of illumination entered the room by diffusing reflection.Specifically,
The elongation of angle cylinder is controlled, curtain rotation is folded, the angle folded between curtain and outline border reduces, the light that diffusing reflection enters the room
It reduces;User can be adjusted according to the hobby and demand of itself.
It when angle cylinder is extended to extreme position, folds curtain and all covers window leaf, fold curtain at this time and be in
Full occlusion state, the state are mainly used for shading(Direct sunlight and diffusing reflection light)Or for blocking sight.
In the state of blocking completely, control length cylinder elongation, solar panels will tilt an angle, and pass through sunlight
That crosses solar panels is refracted into interior, achievees the effect that shutter;By controlling the elongation of length cylinder, refraction is adjusted
Into indoor intensity of illumination.
When needing to fold curtain withdrawal original state, control length cylinder is extended to limiting condition, the contracting of angle cylinder
It is as short as limiting condition.
By operating to control panel, air accumulator and vacuum tank work user, make folding curtain can be different
It is converted between state, to reach different use demands.
User is by operating control panel, control motor work, and then achievees the effect that convert air, simultaneously
Gas in vacuum tank can be drawn back in air accumulator.
The side that the outline border is located outside is front end, and being located at indoor side is rear end.
Embodiment 2
The present embodiment makes following improvement on the basis of embodiment 1:The switch includes switch a, switch b, switch c, switch
D, switch e, switch f;The switch a, switch b, switch c, switch d, switch e, be separately installed in switch f key a, key b,
Key c, key d, key e, key f.
The key a, key b, key c, key d, key e, key f are electrically connected with the controller respectively.
Battery is installed in the outline border;The battery is electrically connected with the controller;The electricity that the solar panels generate
It can be stored into battery, battery is power supply of the invention.
The air pump is piston air pump;The air pump includes piston cylinder, and seals the work being slidably connected with piston cylinder
Cock body, the rear end of the piston body are connected with crank, and the crank passes through the output axis connection of eccentric wheel and motor.
Solenoid valve e is installed between the air accumulator and inlet chamber.
Solenoid valve a is installed between the length cylinder and air accumulator, solenoid valve b is installed between vacuum tank.
Solenoid valve c is installed between the angle cylinder and air accumulator, solenoid valve d is installed between vacuum tank.
The solenoid valve a, solenoid valve b, solenoid valve c, solenoid valve d, solenoid valve e are electrically connected with the controller respectively.
Controller controls solenoid valve a and opens, the elongation of length cylinder.
Controller controls solenoid valve b and opens, and length cylinder shortens.
Controller controls solenoid valve c and opens, the elongation of angle cylinder.
Controller controls solenoid valve d and opens, and angle cylinder shortens.
Infrared sensor detects signal, and controller controls solenoid valve e and opens, and air accumulator is connected to control panel, can be into
Row button operation.
When user is close to control panel, infrared sensor is incuded, and controller controls solenoid valve e and opens.
Switch a is covered, pressing tablet presses the button a, and buzzer makes a sound, and can operate to other switches;If key a
Do not start, other keys can not be operated.
Switch b is covered, pressing tablet presses the button b, and solenoid valve b is opened;It is removed from switch b, solenoid valve b is closed.
Switch c is covered, pressing tablet presses the button c, and solenoid valve a is opened;It is removed from switch c, solenoid valve a is closed.
Switch d is covered, pressing tablet presses the button d, and solenoid valve d is opened;It is removed from switch d, solenoid valve d is closed.
Switch e is covered, pressing tablet presses the button e, and solenoid valve c is opened;It is removed from switch e, solenoid valve c is closed.
Cover switch f(1-2s), pressing tablet presses the button f, motor driven impeller rotation, the axial-flow fan work for ventilation
Make;Switch f is covered again(1-2s), motor stops working.
Embodiment 3
The present embodiment makes following improvement on the basis of previous embodiment:It is separately installed on the vacuum tank, on air accumulator
The baroceptor being electrically connected with the controller, when negative pressure lower than air pressure in setting value or air accumulator is less than setting value in vacuum tank
When, controller controls motor and drives piston air pump rotation work, so as to normal use of the present invention.
Further, solenoid valve m and solenoid valve n is also respectively connected in the inlet end of the piston air pump, outlet side.When
Air pressure is less than setting value in air accumulator, and when the negative pressure in vacuum tank reaches maximum setting vacuum values, then solenoid valve n opening makes to store up
Gas tank air inlet and vacuum tank is not vented;When the negative pressure value in vacuum tank is less than maximum setting vacuum values, and the pressure in air accumulator
When value reaches maximum set pressure value, then solenoid valve m opening is vented outwards vacuum tank and air accumulator not air inlet.
Further, in order to reduce the loss of electric power, one end connection that the output shaft of the motor is connect with piston air pump
There is ratchet mechanism, motor drives the impeller work when rotating forward and piston air pump does not work;Pass through ratchet mechanism when motor reversal
Drive piston air pump work.
Embodiment 4
The present embodiment makes following improvement on the basis of previous embodiment:It is located at outside on the outline border and wind speed biography is installed
Sensor, when air velocity transducer reaches setting value, angle cylinder foreshortens to limiting condition, and length cylinder is extended to limiting condition,
It packs up folding curtain automatically, avoids folding curtain impaired.