KR101851466B1 - Green house having skylight window for open and closed - Google Patents

Abstract

The present invention relates to a greenhouse with an openable ceiling. A slanted ceiling part, having a mountain shape, of a greenhouse ceiling, forming the roof of a greenhouse, is connected with a fixed ceiling in a longitudinal direction, and a fixed ceiling and an openable ceiling are alternately arranged in the other slanted ceiling part, but the openable ceiling is selectively opened and closed through an opening and closing unit, and a part of the greenhouse ceiling part, forming the roof of the greenhouse, is selectively opened and closed, and thus, the present invention is capable of stably ventilating the greenhouse for temperature control during a high temperature period such as summer while controlling the internal temperature of the greenhouse, thereby maximizing the efficiency of cultivating plants in the greenhouse. In the meantime, the slanted ceiling part, having a mountain shape, of the greenhouse ceiling, forming the roof of a greenhouse, is connected with the fixed ceiling in a longitudinal direction, and the fixed ceiling and the openable ceiling are alternately arranged in the other slanted ceiling part, but the openable ceiling is selectively opened and closed through the opening and closing unit, and moreover, a stopper unit is additionally included for selectively keeping the opening and closing unit opened or closed, and thus, the present invention is capable of stably keeping the openable ceiling opened or closed for a predetermined time.

Description

[0001] The present invention relates to a green house having a skylight window for opening and closing,

[0001] The present invention relates to a greenhouse having an opening / closing skylight, and more particularly to a greenhouse having a mountain shape among greenhouses for forming a roof of a greenhouse, The opening and closing skylight is selectively opened and closed by the opening and closing means so that the opening and closing skylight can be selectively opened and closed to selectively open and close a portion of the roof for the greenhouse forming the roof of the greenhouse It is possible to stabilize the ventilation for indoor ventilation and temperature control during the high temperature maintenance period such as summer, and to control the temperature inside the greenhouse. Accordingly, It is about a greenhouse with a skylight.

In general, greenhouses are used as storage facilities for the cultivation of vegetables and fruits, for the warming of flora or tropical plants, or for the drying and storage of other crops. These greenhouses are constructed using steel structures (pipes or aluminum sashes) A greenhouse is provided by installing a frame and a shielding film made of transparent glass or vinyl having a good transmittance of sunlight on the outside of the frame of the steel structure.

The concrete structure of the greenhouses as described above will be described in detail. The foundation to be constructed is flatly constructed on the basis of the civil engineering works and the foundation works, which are iron structures, are used to construct the greenhouses. A plurality of struts forming a space inside the greenhouse in parallel with a plurality of vertically erected so as to have a predetermined height and width on the ground; And a plurality of fixing frames installed in an arcuate shape at regular intervals in front and rear across the horizontal beams, wherein a shielding film made entirely of glass or vinyl is installed on the outer side of the greenhouse to complete the installation of the greenhouse It is true.

However, in the conventional greenhouses as described above, in order to ventilate or light the inside of the room, a method of installing or releasing the barrier of the greenhouse on the roof or wall side, that is, So that it is very difficult to install and remove the blocking film for ventilation or mining, and it takes a lot of time and effort to work and it is inconvenient for the management and operation.

Particularly, in the conventional greenhouses as described above, even when ventilation is performed by folding up a barrier provided on a roof or a wall surface side, hot air can not escape to the inside of the roof inside the greenhouse in summer, The plants are not maintained well due to high temperature, and they are easily killed by dryness or easily damaged by pests, resulting in high temperature damage.

Therefore, it is possible to selectively open and close a part of the roof forming the roof, so that ventilation for indoor ventilation and temperature control can be performed in a period during which a high temperature such as summer is maintained, Therefore, it is required to research and develop a greenhouse that can maximize the planting efficiency of plants.

Korea Registered Utility Model No. 144726 1999.02.05 Registered. Registered Utility Model No. 448602 in Korea Registered on April 21, 2010.

In order to solve the above-mentioned problems, the present invention is characterized in that, among the greenhouses for building greenhouses, the one-sided tilted sidewall having a mountain shape is provided with a fixing sidewall extending in the longitudinal direction, The opening and closing skylight is selectively opened and closed by means of the opening and closing means to selectively open and close a part of the roof for the greenhouse forming the roof of the greenhouse, The present invention also provides a greenhouse having an opening / closing skylight so that indoor air temperature and ventilation for temperature control can be stably controlled and the temperature inside the greenhouse can be controlled.

In addition, the technology according to the present invention stably ventilates indoor ventilation and temperature control during a high temperature such as summer, and adjusts the temperature inside the greenhouse, thereby maximizing the planting efficiency inside the greenhouse It has its purpose.

Another object of the present invention is to provide a greenhousing which forms a roof of a greenhouse, wherein one side inclined skirt portion having a mountain shape has a fixing sun skirt extended in the longitudinal direction and fixed to the other side inclined skirt portion Closing skylight is selectively opened and closed by means of the opening and closing means while the opening / closing skylight is selectively opened and closed, and the stopper unit is selectively opened or closed with respect to the opening / closing means, Open or closed but can be stably maintained for a predetermined period of time in an open or closed state.

The present invention for achieving the above-mentioned objects is as follows. That is, the greenhouse having the opening / closing skylight according to the present invention has a front and rear wall for greenhouses, a left and right room for greenhouses along the circumference of a vertical frame standing vertically at regular intervals on the ground so as to have a rectangular shape A roof frame is installed and fixed to the upper ends of the vertical frames facing each other in the left and right direction so as to have a mountain shape so that a roof opening / Wherein one side inclined skirt portion having a mountain shape among the greenhouses has a fixed frame fixedly installed on one side in the width direction of the roof frame and a center fixedly installed in the widthwise center of the roof frame, A fixing skylight fixed at both ends thereof in opposing fixing grooves of the frame is installed and fixed in the longitudinal direction in succession, The other side inclined skirt portion is fixed to the upper side fixing groove of the guide frame which is fixed to the upper side of the other side in the width direction of the roof frame and the center frame fixedly installed on the central upper portion in the width direction of the roof frame Wherein the fixing skirt is installed and fixed with a predetermined length in the longitudinal direction orthogonal to the width direction of the roof frame and at the same time the opening frame for the both ends of the upper frame is restrained to be slidable in the facing lower guide groove of the center frame and the guide frame And the opening and closing skirts are arranged alternately with the fixing skirts in the longitudinal direction orthogonal to the width direction of the roof skeleton while being staggered with the fixing skirts, And is opened / closed while moving and returning by a predetermined distance based on the fixing sunshade .

Here, the opening / closing means is provided with an upper end fixed to a bottom surface of a side of the roof frame of the opening / closing skirt, and downwardly protruding from the guide groove through a through hole communicated downwardly below the guide groove formed on the lower side of the guide frame A moving guide bar protruding from the bottom surface of the vertical guide rail in a longitudinal direction and a vertical guide rail extending in a longitudinal direction of the vertical guide rail, A drive motor for driving the endless chain, a driving sprocket for transmitting a driving force to be engaged with one side of the endless chain, a forward / reverse motor connected to the driving sprocket to selectively rotate forward and reverse, And is engaged with the inside of the other side, This is preferred yirueojim including interlocking sprocket.

Further, it is preferable that the opening / closing skirt further has a reinforcing finishing piece for strength reinforcement attached and fixed to the upper surface of both ends confined by the center frame and the guide frame.

The opening and closing skylight is disposed to be offset with respect to the fixing skylight, and both ends adjacent to the fixing skylight are overlapped with the fixing skylight by a predetermined width.

It is preferable that the opening / closing skirt is protruded upwards a predetermined length with respect to a central portion excluding a predetermined length of both ends fixed to the center frame and the guide frame so that the upper surface thereof is in line with the lower surface of the fixing skylight.

The greenhouse having the opening / closing skylight according to the present invention is fixed to the lower portion of the lower end of the endless chain so that the movement guide bar is not selectively moved with the endless chain engaged with the upper end, And a stopper unit that selectively fixes the endless chain to the endless chain while being selectively moved and returned by a distance.

At this time, the stopper unit is selectively moved up and down by a certain distance upward from the lower side of the endless chain to the endless chain side, and a fixing protrusion for preventing the rotation of the endless chain is protruded upward by a predetermined length at the upper end And a cylinder that is inserted into the rod and the lower end of the rod by a predetermined length to selectively raise and lower the rod by a predetermined distance.

The vertical and horizontal motors are disposed on the outermost one of the vertical frames which are axially connected to the drive sprockets opposed to the interlocking sprockets and which are erected perpendicularly to the other side in the width direction of the roof frame, And is preferably fixedly mounted on a mount for a motor fixed to one side of the vertical frame.

The interlocking sprocket is fixed on a sprocket mounting table fixed to one side of the upper part of the vertical frame, which is disposed on the outermost one of the vertical frames, which is perpendicular to the other side in the width direction of the roof frame, It is preferable to be installed.

The effect of the greenhouse having the opening / closing skylight according to the present invention will be described below.

First, among the greenhouses forming the roof of the greenhouse, one side inclined skylight with a mountain shape has a fixed skylight spoken in the longitudinal direction, and the other side inclined skylight has a fixing skylight and an opening / The opening and closing skylight can be selectively opened and closed by means of the opening and closing means to selectively open and close a part of the roof of the greenhouse forming the roof of the greenhouse, The temperature inside the greenhouse can be controlled while the ventilation is stable.

Second, the ventilation for indoor ventilation and temperature control can be stably performed during the high temperature such as summer, and the temperature inside the greenhouse can be controlled, thereby maximizing the planting efficiency inside the greenhouse.

Third, among the greenhouses forming the roof of the greenhouse, the one side inclined skylight having a mountain shape is provided with a fixing skylight extending in the longitudinal direction, and the other side inclined skylight is provided with a fixing skylight and an opening / The opening / closing skylight is selectively opened and closed by the opening and closing means, and the stopper unit is selectively opened or closed to selectively open or close the opening / closing means, whereby the opening / closing skylight is selectively opened or closed, State can be stably maintained for a predetermined time.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exemplary view showing a greenhouse having a sunshade for opening and closing according to the present invention; Fig.
BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a door opening and closing structure, and more particularly,
Fig. 3 is a side view of the main part showing the open / close structure of the opening / closing skylight, which is the recess of the greenhouse having the opening / closing skylight according to the present invention.
Fig. 4 is a schematic view showing the main part of the opening / closing skylight of the greenhouse having the opening / closing skylight according to the present invention. Fig.
Fig. 5 is a cross-sectional view showing the cross-sectional view of the main part of the opening / closing skylight, which is the recess of the greenhouse having the opening / closing skylight according to the present invention,
Fig. 6 is a side view of the main part showing another embodiment of the open / close structure of the opening / closing skylight, which is the recess of the greenhouse having the opening / closing skylight according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a greenhouse having a sunshade according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a greenhousing having an opening / closing skylight according to the present invention, FIG. 2 is a front view showing the opening / closing structure of the opening / closing skylight of the greenhouse having the opening / closing skylight according to the present invention, 3 is a side view showing the opening / closing structure of the opening / closing skylight, which is the recess of the greenhouse having the opening / closing skylight according to the present invention.

FIG. 4 is a perspective view showing the opening and closing skylight of the greenhouse having the opening / closing skylight according to the present invention, and FIG. 5 is a cross-sectional view taken along the line AA of FIG. 4. In the greenhouse having the opening / Fig. 2 is a cross-sectional view showing the main part of the opening / closing skylight,

Fig. 6 is a side view of a main part showing another embodiment of the open / close structure of the opening / closing skylight, which is the recess of the greenhouse having the opening / closing sunshade according to the present invention.

1 to 5, a greenhouse 1 having an opening / closing skylight according to a preferred embodiment of the present invention includes a vertical frame (not shown) vertically installed with a predetermined interval on the ground so as to have a rectangular shape in plan view The front and rear walls 300 and the greenhouse left and right side walls 400 are installed and fixed along the perimeter of the vertical frame 100 facing each other in the left and right direction, The roof frame 200 is installed and fixed so that a roof 600 is formed on the top of the roof frame 200 to form a roof.

In the greenhouse 1 having the opening / closing skylight according to the present invention as described above, one side inclined skirt portion having a mountain shape among the greenhousing skirts 600 is fixed to the upper side of one side in the width direction of the roof frame 200 A fixing skirt 610 having both ends fixed to the fixing grooves 511 and 531 of the center frame 530 fixed to the center of the roof frame 200 in the width direction is provided with a length Direction.

Particularly, in the greenhouse 1 having the above-described opening / closing skylight, the other inclined skylight portion having a mountain shape among the greenhouse skylights 600 is fixedly installed in the upper center portion in the width direction of the roof frame 200 A fixing skirt 630 having both ends fixed to the upper fixing grooves 531 'and 551 facing the center frame 530 and the guide frame 550 fixed to the other side in the width direction of the roof frame 200 555 which face the center frame 530 and the guide frame 550. The guide frame 550 is installed and fixed at a predetermined length in the longitudinal direction orthogonal to the width direction of the roof frame 200, The opening and closing skirt 640 constrained to be slidable at both ends thereof is disposed alternately with the fixing skirt 630 in the longitudinal direction orthogonal to the width direction of the roof frame 200 while being vertically offset from the fixing skirt do.

Here, the opening / closing skirt 640 may be selectively opened and closed while being moved between the fixing skylights 630 by moving the fixing skylight 640 through the opening / closing means 700 for a certain distance .

The opening and closing means 700 includes a moving guide bar 710, an endless chain 720, a driving sprocket 730, a forward and reverse motor 740 and an interlocking sprocket 750 .

At this time, the moving guide bar 710 is fixed to the bottom surface of the end of the opening / closing skirt 640 located at the other side of the roof frame 200, and the guide groove 555 Downward from the guide groove 555 through a through-hole 556 communicating downward and a gear 711 protruding in the longitudinal direction on the lower surface.

In addition, the endless chain 720 is provided between the outermost sides of the vertical frame 100 in the longitudinal direction so that the lower end of the movement guide bar 710 is engaged with the upper end, .

The driving sprocket 730 is engaged with one side of the endless chain 720 to transmit driving force.

In addition, the forward and reverse motor 740 is connected to the drive sprocket 730 to be selectively rotated in the forward and reverse directions.

Particularly, the above-mentioned normal and reverse motors 740 are rotated by a predetermined number of times to rotate forward and reverse so that the opening / closing skirt 640 moves and returns to a lower side of the fixing skirt 630 by a predetermined length .

In other words, the rotational speed of the forward and reverse motors 740 in the forward direction is moved to the lower side of the fixing skirt 630 at one side of the opening / closing skirt 640, And the number of times corresponding to the range in which the other end portion is moved so as not to go beyond the side of the adjacent end portion of the fixing sunshade 630.

Of course, the reverse rotation speed of the forward / reverse motor 740 is preferably the same as the forward rotation speed since it rotates in the reverse direction corresponding to the forward rotation speed.

The interlocking sprocket 750 is engaged with the inside of the other end of the endless chain 720 so as to be opposed to the driving sprocket 730, and rotates in conjunction with rotation of the driving sprocket 730.

In the greenhousing 1 having the opening / closing skylight according to the present invention, the opening / closing skirt 640 is provided on both the upper and lower surfaces of the center frame 530 and the guide frame 550, Should be considered.

Therefore, it is preferable that the opening / closing skylight 640 is further fixedly attached to both upper surfaces of the center frame 530 and the guide frame 550 by reinforcing finishing pieces 641 for strength reinforcement.

The opening and closing skirts 640 may be disposed so as to be offset with respect to the fixing skirts 630 such that both ends of the opening skirts 630 adjacent to the fixing skirts 630 are spaced apart from the fixing skirts 630 by a predetermined width As shown in FIG.

It is important that the opening and closing skylight 640 is formed so that the upper surface of the opening skylight 640 is aligned with the lower surface of the fixing skylight 630, 550), a predetermined length is protruded upward with respect to a central portion except for a predetermined length at both ends.

3, in the greenhouse 1 having the opening / closing skylight according to the present invention having the above-described configuration, the forward and reverse motors 740 are connected to the interlocking sprocket 750, A vertical frame 100 disposed on the outermost one of the vertical frames 100 connected to the sprocket 730 and vertically installed at regular intervals with the other side in the width direction of the roof frame 200, And is fixedly mounted on a mounting stand 100 'for a motor fixed to the upper side.

3, the interlocking sprocket 750 includes a plurality of vertical frames 70, which are perpendicular to the other side in the width direction of the roof frame 200, Is fixedly mounted on a mounting base 100 "for a sprocket which is fixed to one side of the upper part of the vertical frame 100 disposed on the vertical frame 100.

6 is different from the embodiment of the opening and closing structure described with reference to Figs. 1 to 5 only in that the stopper unit 800 is additionally provided , The detailed description of the same reference numerals will be omitted.

6, the movement guide bar 710 can be prevented from being selectively moved with the endless chain 720 engaged with the endless chain 720. The upper end of the endless chain 720 is fixed to the lower end of the endless chain 720, And a stopper unit 800 for selectively locking and unlocking the endless chain 720 while being selectively moved and returned to the chain 720 by a predetermined upward distance.

The stopper unit 800 includes a rod 810 and a cylinder 830. The rod 810 extends upward from the lower side of the endless chain 720 toward the endless chain 720 A pair of fixing protrusions 811 for preventing rotation of the endless chain 720 are protruded upwards in a pair at an upper end thereof.

In addition, the cylinder 830 is inserted in the lower end of the rod 810 by a predetermined length to selectively raise and lower the rod 810 by a predetermined distance.

In the stopper unit 800 as described above, a pair of fixing protrusions 811 protrude from the upper portion of the rod 810, and the fixing protrusions 811 protrude from the rod 810, 810 and may protrude from the upper surface in a pair.

6, the above-described interlocking sprocket 750 may be mounted on a separate mounting base (not shown). In this case, as shown in FIG. 6, And can be disposed and fixed to a lower portion of a mounting stand 100 "for a sprocket to be installed.

According to the greenhouse having the opening / closing skylight in accordance with the present invention as described above, in the one-sided skylight portion having a mountain shape among the greenhouses for forming the roof of the greenhouse, the fixing skylight is extended in the longitudinal direction, The opening and closing skylight can be selectively opened and closed through the opening and closing means so that the opening and closing skylight can be selectively opened and closed by selectively opening and closing a part of the skylight for greenhouses forming the roof of the greenhouse, The temperature inside the greenhouse can be controlled while ventilation for indoor ventilation and temperature control can be stably performed.

In addition, it is possible to stabilize ventilation for indoor ventilation and temperature control during a high temperature such as summer, and to regulate the temperature inside the greenhouse, thereby maximizing the planting efficiency inside the greenhouse.

Further, among the greenhouse skylights forming the roof of the greenhouse, the one-sided skylight portion having a mountain-like shape is formed in such a manner that the fixing skylight is extended in the longitudinal direction, and the securing skylight and the opening / The opening / closing skylight is selectively opened and closed by the opening and closing means, and the stopper unit is selectively opened or closed to selectively open or close the opening / closing means, whereby the opening / closing skylight is selectively opened or closed, It is possible to stably maintain the state for a predetermined time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the invention is not limited thereto. Various modifications may be made by those skilled in the art. Are included in the scope of the present invention.

1: Greenhouse
100: vertical frame 200: roof frame
300: greenhouse front, rear wall 400: greenhouse left and right side wall
510: fixing frame 511: fixing groove
530: Central frame 531, 531 ': Fixing groove
535: guide groove 550: guide frame
551: fixing groove 555: guide groove
556: Through hole
600: Greenhouse skylight
610, 630: Fixing skylight 640: Opening / closing skylight
641: Reinforcement finishing piece
700: opening / closing means
710: Movement guide bar 711: Gear
720: Endless chain 730: Driving sprocket
740: Forward motor 750: Interlocking sprocket
800: Stopper unit
810: Rod 811: Fixing projection
830: Cylinder
100 ': mounting stand for motor
100 ": Mounting Base for Sprockets

Claims (9)

The front and rear walls 300 and the greenhouse left and right side walls 400 are installed along the perimeter of the vertical frame 100 standing upright at regular intervals on the ground so as to have a rectangular shape when viewed from the plane A roof frame 200 is fixedly installed on the upper ends of the vertical frames 100 facing each other in the left and right direction so as to have a mountain shape and the roof frame 200 is provided with a roof 600) is formed in a greenhouse (1) having an opening / closing skylight,
The one-sided skylight portion having a mountain shape of the greenhouse skylight 600 includes a fixed frame 510 fixedly installed on one side in the width direction of the roof frame 200, A fixing skylight 610 to which both ends are fixed is fixed successively in the longitudinal direction to the opposing fixing grooves 511 and 531 of the center frame 530 fixedly installed at the center,
The other inclined skirt portion having a mountain shape among the greenhousing skirts 600 is formed by the center frame 530 fixed to the upper center of the roof frame 200 in the width direction, A fixing skylight 630 to which both ends are fixed to the upper fixing grooves 531 'and 551 of the guide frame 550 fixed to the upper portion of the other side is disposed in a longitudinal direction Closing skirts 640 which are both restrained to be slidable in the lower guide grooves 535 and 555 facing the center frame 530 and the guide frame 550, The fixing skylight 630 is alternately arranged in the longitudinal direction orthogonal to the width direction of the roof frame 200 while being staggered with the fixing skylight,
The opening / closing skylight 640 is selectively opened and closed while being moved between the fixing skylights 630 by a predetermined distance based on the fixing skylight 630 through the opening / closing means 700,
The opening / closing means (700)
A through hole 556 whose upper end is fixed to the lower end of the opening skylight 640 at the other side of the roof frame 200 and downwardly communicated below the guide groove 555 formed at the lower side of the guide frame 550, A movement guiding bar 710 protruding downward from the guide groove 555 through the guide groove 555 and having a gear 711 protruding in the longitudinal direction,
An endless chain 720 which is provided between the outermost sides of the vertical frame 100 in the longitudinal direction and which moves the lower end of the movement guide bar 710 to selectively move and return at a predetermined distance,
A drive sprocket 730 for transmitting driving force to the inside of one end of the endless chain 720,
A forward / reverse motor 740 which is connected to the driving sprocket 730 to selectively rotate in the forward and reverse directions,
And an interlocking sprocket (750) facing the drive sprocket (730) and engaged with the inside of the other side of the endless chain (720) and rotated interlockingly by rotation drive of the drive sprocket (730) Greenhouse with skylight. delete The method according to claim 1,
The opening / closing skylight (640)
Wherein a reinforcing finishing piece (641) for reinforcing strength is further attached and fixed to upper surfaces of both ends confined by the center frame (530) and the guide frame (550). The method according to claim 1,
The opening and closing skirts 640 are disposed so as to be offset with respect to the fixing skirts 630 such that both ends of the opening skirts 630 adjacent to the fixing skirts 630 overlap with the fixing skirts 630 by a predetermined width Greenhouse with opening / closing skyline. The method according to claim 1,
The opening / closing skirt 640 is formed so that its upper surface is in line with the lower surface of the fixing skirt 630,
And a protruding upwardly protruding length is formed at a central portion of the center frame (530) except for a predetermined length at both ends confined by the guide frame (550). The method according to claim 1,
In order to prevent the movement guide bar 710 from being selectively moved with the endless chain 720 engaged with the endless chain 720,
The endless chain 720 is fixed to the lower end of the endless chain 720 so that the upper end thereof is selectively moved and returned to the endless chain 720 by a certain distance upward, And a unit (800). The method according to claim 6,
The stopper unit (800)
A fixing protrusion 811 for preventing rotation of the endless chain 720 is moved up and down by a predetermined distance upwardly from the lower side of the endless chain 720 toward the endless chain 720 side, A rod 810 having a predetermined length protruded and
And a cylinder (830) having a predetermined length of a lower end of the rod (810) to selectively raise and lower the rod (810) by a predetermined distance. The method according to claim 1,
The normal / reverse motor 740 is connected to the driving sprocket 730, which is opposed to the interlocking sprocket 750,
A vertical frame structure 100 installed vertically with a certain distance from the other side in the width direction of the roof frame structure 200 and fixed to one side of the vertical frame structure 100 disposed on the outermost side, (100 ').≪ / RTI > 9. The method of claim 8,
The interlocking sprockets 750 are disposed on the upper part of the vertical frame 100 disposed on the outermost one of the vertical frames 100 standing upright at regular intervals and perpendicular to the other side in the width direction of the roof frame 200 Is mounted on a mounting base (100 ") for a sprocket which is fixed to a side of a vehicle.

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