KR102225122B1 - Folding type solar heating device and solar heating system using this - Google Patents

Abstract

The present invention can control the area of the condensing portion to which sunlight is irradiated, and when not in use, a foldable sunlight heating device for preventing corrosion of the condensing portion by sunlight by blocking sunlight irradiated to the condensing portion and sunlight provided with the same It relates to a heating system.
To this end, the foldable sunlight heating device includes a first shell module provided with a first connector through which fluid is introduced, a second shell module disposed at a position facing the first shell module and provided with a second connector through which the fluid is discharged. , A connection module that is respectively coupled to the first skin module and the second skin module and passes the fluid introduced from the first connector or is coupled to the second sheath module to deliver the fluid to the second connector, and the first sheath module and the second sheath module 2The circulation module is coupled to the skin module and has an inlet connector through which fluid flows in and an outlet connector through which fluid is discharged, and a zigzag flow path between the first and second skin modules while heating the internal fluid by sunlight. A heat generating module to be implemented, and the heat generating module extends or contracts in a direction in which the fluid is moved according to a distance between the first shell module and the second shell module.

Description

Foldable sunlight heating device and sunlight heating system equipped with it {FOLDING TYPE SOLAR HEATING DEVICE AND SOLAR HEATING SYSTEM USING THIS}

The present invention relates to a foldable sunlight heating device and a sunlight heating system equipped with the same, and more specifically, the area of the condensing portion to which sunlight is irradiated can be adjusted, and when not in use, the sunlight irradiated to the condensing portion is blocked. It relates to a foldable sunlight heating device for preventing corrosion of the condensing part by the sun and a sunlight heating system equipped with the same.

Solar energy is infinite clean energy.

In general, a sunlight heating device is a facility that converts radiant energy of sunlight into thermal energy by using a fluid such as air or a liquid as a collecting medium, and is widely used for solar heating or solar drying. The non-empty heat collecting plate type sunlight heater is composed of parts such as a housing, a transparent cover, and a heat collecting plate, and the fluid flows in a square channel between the heat collecting plate and the base plate. Due to the low heat transfer ability of the fluid, the temperature of the heat collecting plate is relatively high, and thus heat loss to the environment is relatively large.

In order to increase the heat collection efficiency of the sunlight heating device by lowering the heat collecting plate temperature, a rib is installed on the surface of the heat collecting plate on the side of the air channel, which not only increases the heat transfer area, but also increases the convective heat transfer coefficient by disturbing the flow. The shape of the rib used in the non-empty heat collecting flat-type sunlight heating device includes transverse ribs, inclined ribs, and V-shaped ribs (one V-shaped structure is installed in the channel width direction) and multiple There are V-shaped ribs (a number of V-shaped structures are connected to each other in the channel width direction). Among them, the heat transfer promotion effect of multiple V-shaped ribs is the best. By installing multiple V-shaped ribs, a number of longitudinal vortices are formed in the channel, facilitating mutual mixing between the hot fluid near the heat collecting plate and the cold fluid in the main flow, and at the same time forming a secondary vortex in the space between the adjacent ribs. As a result, the mixing of fluids near the heat absorbing plate is further promoted.

However, in the conventional flat panel type sunlight heating device, since the area of the condensing part to which sunlight is irradiated is determined, it is difficult to control the area of the condensing part, and even when not in use, the condensing part is exposed to sunlight. It has a problem of being easily corroded.

Republic of Korea Patent Publication No. 10-1984-0004492 (title of the invention: solar heating device, published on October 15, 1984)

An object of the present invention is to solve the conventional problem, it is possible to adjust the area of the condensing part irradiated with sunlight, and when not in use, it prevents corrosion of the condensing part by sunlight by blocking sunlight irradiated to the condensing part. It is to provide a foldable sunlight heating device and a sunlight heating system equipped with it.

According to a preferred embodiment for achieving the object of the present invention described above, the foldable sunlight heating device according to the present invention comprises: a first shell module provided with a first connector through which a fluid flows; A second skin module disposed at a position facing the first skin module and provided with a second connector through which fluid is discharged; A connection module coupled to the first skin module and the second skin module, respectively, to pass the fluid introduced from the first connector or to pass the fluid introduced from the first connector or to the second skin module to deliver the fluid to the second connector; A circulation module coupled to the first sheath module and the second sheath module, respectively, and having an inlet connector through which fluid flows in and an outlet connector through which fluid is discharged; And heating the internal fluid by sunlight, and connecting the connection module coupled to the first skin module and the inlet connector of the circulation module coupled to the second skin module, or one of two circulation modules facing each other. A heating module connecting the other inlet connector of the two circulation modules facing the outlet connector, or connecting the outlet connector of the circulation module coupled to the first skin module and the connection module coupled to the second skin module; And at least the heat generating module of the connection module, the circulation module, and the heat generating module extends or contracts in a direction in which the fluid moves according to a distance between the first skin module and the second skin module.

Here, the connection module includes: a first connection panel; A second connection panel disposed at a position facing the first connection panel; And a connection member connecting the first connection panel and the second connection panel so that a connection space for storing fluid is formed between the first connection panel and the second connection panel.

Here, the connecting member may extend or contract in length in a direction in which the fluid moves in the heating module according to a distance between the first and second shell modules.

Here, the circulation module includes: a first circulation panel; A second circulation panel disposed at a position facing the first circulation panel; And a circulation member connecting the first circulation panel and the second circulation panel so that a circulation space in which fluid is stored is formed between the first circulation panel and the second circulation panel.

Here, the circulation member may extend or contract in length in a direction in which the fluid moves in the heating module according to a distance between the first and second shell modules.

Here, the heating module includes: a first joint panel; A second joint panel disposed at a position facing the first joint panel; And a heating member that heats the internal fluid by sunlight, and connects the first joint panel and the second joint panel to form a path through which the fluid moves between the first joint panel and the second joint panel. Including, the heat generating member is extended or contracted in length in a direction in which the fluid is moved.

Here, the heating member includes a black chil portion applied to the surface in a color absorbing sunlight or laminated on the surface to absorb sunlight.

The foldable sunlight heating device according to the present invention connects the first skin module and the second skin module so that sunlight is transmitted, and a greenhouse space filled with air is formed between the first skin module and the second skin module. A light-transmitting module further includes, wherein the light-transmitting module extends or contracts in a direction in which the fluid moves in the heating module according to a distance between the first and second sheath modules.

The foldable sunlight heating device according to the present invention further includes a fusion prevention module that transmits sunlight, but prevents the light transmitting module from contacting the connection module, the circulation module, and the heating module, wherein the fusion prevention module, The length is extended or contracted in the direction in which the fluid moves in the heating module according to the distance between the first and second skin modules.

Here, in one of the first and second skin modules, a charge/discharge hole is formed through, and in the charge/discharge hole, a charge for injecting air into the greenhouse space or discharging air from the greenhouse space Discharge drive unit; is combined.

In the foldable sunlight heating device according to the present invention, the connection module coupled to the first skin module and the circulation module are coupled, the first skin module is coupled, and the fluid flowing through the first connector is transferred to the connection module. It further includes a; buffer module to be transferred to.

Here, the buffer module includes: a shell coupling panel coupled to the first shell module; A module coupling panel disposed at a position facing the shell coupling panel so that the connection module and the circulation module are coupled; And a buffer member connecting the shell coupling panel and the module coupling panel so that a buffer space for storing fluid is formed between the shell coupling panel and the module coupling panel.

Here, the buffer member may extend or contract in length in a direction in which the fluid moves in the heating module according to a distance between the first and second shell modules.

In the foldable sunlight heating device according to the present invention, when the second skin module is supported by the first skin module as at least the length of the heating module is contracted in the direction in which the fluid moves, the first skin module and the second skin module It further includes; a detachable module for detachably coupling the outer shell module.

The sunlight heating system according to the present invention comprises: a sunlight condensing module that heats a fluid by sunlight; And an optical path module for adjusting the direction of the sunlight in which the sunlight condensing module looks at the sunlight in response to the irradiation direction of sunlight. The sunlight condensing module includes a foldable sunlight heating device according to the present invention.

Here, the optical path module includes: a rotation driving unit for rotating a drive shaft by generating a rotational force in response to a horizontal movement of the sun from sunrise to sunset; A rotation input unit coupled to the sunlight condensing module; And a rotation transmission unit that transmits the rotational force to the rotation input unit, and connects the rotation input unit and the sunlight condensing module, wherein the sunlight condensing module receives sunlight in response to the horizontal movement of the sun from sunrise time to sunset time. A path guide module that adjusts the direction of the viewing line; And a tilt adjustment module connecting the rotation input unit and the sunlight condensing module, and adjusting the direction of the sunlight concentrating module's gaze to the sunlight in response to vertical movement of the sun from sunrise to sunset. It further includes at least any one of.

Here, the path guide module includes: a path connector connecting the sunlight condensing module and the rotation input unit; A guide block coupled to the path connector and provided with a guide path along a circumferential direction; And a slider fitted to the guide path so as to move along the guide path according to the rotation of the guide block, wherein any one of the guide block and the slider can be moved up and down based on the path connector, and , The rotation drive unit is adjusted in rotation speed corresponding to the sunrise time and sunset time.

Here, the inclination adjustment module includes: a first connector to which the sunlight condensing module is rotatably coupled; A second connector extending from the first connector and coupled to the rotation input unit; A first gear part provided in any one of the first connector and the second connector; A second gear part spaced apart from the first gear part and provided on the different one of the first connector and the second connector; A third gear portion provided between the first gear portion and the second gear portion and intermittently engaged with any one of the first gear portion and the second gear portion; And an adjustment wire portion having both ends fixed to both ends of the sunlight condensing module while being supported by the third gear portion, wherein when the third gear portion is firstly engaged with the first gear portion, the third gear portion When the control wire is moved according to the forward rotation of the gear part, the sunlight collecting module looks at the sun from sunrise time to the maximum altitude time, and when the third gear part is secondarily engaged with the second gear part, the third gear part is reversed. According to the rotation, the control wire is moved so that the sunlight condensing module looks at the sun from the maximum altitude time to the sunset time.

According to the foldable sunlight heating device according to the present invention and the sunlight heating system equipped with it, the area of the condensing part to which sunlight is irradiated can be adjusted, and when not in use, the condensing part by sunlight is blocked by blocking the sunlight irradiated to the condensing part. Can prevent corrosion.

In addition, according to the present invention, the buffer space can be expanded or contracted by the fluid flowing through the detailed configuration of the buffer module, and the buffer space in which the fluid is accommodated can be varied.

In addition, according to the present invention, the connection space may be expanded or contracted by the fluid introduced through the detailed configuration of the connection module, and the connection space in which the fluid is accommodated may be varied.

In addition, according to the present invention, the circulation space may be expanded or contracted by the fluid introduced through the detailed configuration of the circulation module, and the circulation space in which the fluid is accommodated may be varied.

In addition, the present invention can clarify the coupling relationship between the first connection connector and the second connection connector through the coupling relationship between the buffer module and the connection module.

In addition, the present invention can clarify the coupling between the modules through the coupling relationship between the connection module and the heating module and the circulation module and the heating module.

In addition, the present invention stably secures the path through which the fluid flowing in through the detailed configuration of the heating module, stabilizes the length extension or contraction in the direction in which the fluid is moved, and stably varies the length of the heating member. , Make sure that the moving fluid is sufficiently heated by sunlight.

In addition, according to the present invention, the heating member sufficiently absorbs radiant energy due to sunlight through the black painted part, and the fluid passing through the heating member is stably heated.

In addition, the present invention prevents separation of the first skin module and the second skin module when the second skin module is supported on the first skin module through the additional configuration of the detachable module, and when sunlight is irradiated, the heat generating unit Let sunlight be irradiated stably

In addition, according to the present invention, it is possible to prevent heat dissipation from the heat generating module by exhibiting a greenhouse effect in a greenhouse space through an additional configuration of the light transmitting module, and to prevent the heat of the fluid passing through the heat generating unit from decreasing.

In addition, the present invention prevents contact between the light transmitting module and the heating module when the greenhouse space is expanded or contracted through the additional configuration of the fusion prevention module, and prevents the light transmitting module from being fused to the heating module by heat generated from the heating module. On the other hand, it is possible to prevent the transmissive module from being deformed or punctured by the heat generated from the heating module, and to secure and maintain the greenhouse space stably.

In addition, the present invention facilitates expansion and contraction of the greenhouse space by supplying or discharging air to the greenhouse space, at least in response to the extension or contraction of the length of the heating module, and transmits light between the first and second skin modules. It can prevent the module from interfering.

In addition, since the present invention includes an optical path module in the sunlight heating system, the foldable sunlight heating device stably adjusts the direction of gaze toward the sun in response to the movement of the sun from sunrise to sunset, and improves the amount of heat generated in the heating unit. I can make it.

In addition, the present invention allows the foldable sunlight heating device to continuously look at the sun stably according to the time series in response to the movement of the sun from sunrise to sunset through the detailed configuration of the light path module, and the irradiation direction of the sunlight and the foldable sunlight heating device Can substantially match the direction of the gaze looking at the sunlight.

In addition, according to the present invention, the foldable sunlight heating device can stably adjust the direction of gaze toward the sunlight in response to the horizontal movement of the sun from sunrise to sunset through the additional configuration of the path guide module.

In addition, the present invention can stably adjust the angle of inclination in the direction of the line of sight in which the foldable sunlight heating device looks at the sunlight in response to the altitude of the sun from sunrise to sunset through the additional configuration of the inclination control module.

1 is a cross-sectional view schematically showing a state in which a condensing portion irradiated with sunlight is exposed to the outside in a foldable sunlight heating device according to an embodiment of the present invention.
2 is a cross-sectional view schematically showing a state in which a heat collecting portion irradiated with sunlight is blocked from the outside in the foldable sunlight heating device according to an embodiment of the present invention.
3 is a cross-sectional view schematically showing a state in which (a) the buffer module is stretched and (b) the state that the buffer module is contracted in the foldable sunlight heating device according to an embodiment of the present invention.
4 is a cross-sectional view schematically showing a state in which (a) a connection module is extended and (b) a state in which the connection module is contracted in the foldable sunlight heating device according to an embodiment of the present invention.
5 is a cross-sectional view schematically showing a state in which (a) the circulation module is stretched and (b) the circulation module is contracted in the foldable sunlight heating device according to an embodiment of the present invention.
6 is a cross-sectional view schematically showing a state in which the heating module is stretched in the foldable sunlight heating device according to an embodiment of the present invention.
7 is a cross-sectional view schematically illustrating a coupling relationship between a buffer module and a connection module in the foldable sunlight heating device according to an embodiment of the present invention.
8 is a cross-sectional view schematically showing a coupling relationship between two adjacent panels in the foldable sunlight heating device according to an embodiment of the present invention.
9 is a cross-sectional view schematically showing a coupling relationship between a light transmitting film and a fusion preventing member in the foldable sunlight heating device according to an embodiment of the present invention.
10 is a diagram schematically showing a coupling relationship between optical path modules in a sunlight heating system according to an embodiment of the present invention.
11 is an exploded view of a path guide member showing a state in which a slider moves a guide path by time in the sunlight heating system according to an embodiment of the present invention.

Hereinafter, an embodiment of a foldable sunlight heating device according to the present invention will be described with reference to the accompanying drawings. At this time, the present invention is not limited or limited by the examples. In addition, in describing the present invention, detailed descriptions of known functions or configurations may be omitted to clarify the gist of the present invention.

1 to 9, the foldable sunlight heating device according to an embodiment of the present invention includes a first skin module 1, a second skin module 2, a connection module 20, and a circulation module ( 30), and a heating module 40, and may further include at least one of the buffer module 10 and the detachable module 3.

Then, at least the heating module 40 of the buffer module 10, the connection module 20, the circulation module 30, and the heating module 40 is Since the length is elongated or contracted in the direction in which the fluid moves according to the distance, it is possible to adjust the area of the condensing portion to which sunlight is irradiated.

The first shell module 1 forms an exterior from one side of the foldable sunlight heating device. The first shell module 1 is provided with a first connection part 1-1 through which a fluid is introduced.

The second skin module 2 forms the exterior from the other side of the foldable sunlight heating device. The second skin module 2 is disposed at a position facing the first skin module 1. The second skin module 2 is provided with a second connector 2-1 through which fluid is discharged.

At least one of the first skin module 1 and the second skin module 2 may have a channel-shaped cross-sectional structure. In other words, at least one of the first shell module 1 and the second shell module 2 may include a base panel and a channel panel.

In more detail, the first shell module 1 may include a first base panel and a first channel panel. The first base panel has a flat plate shape. The first channel panel is formed to protrude toward the second shell module 2 from the edge of the first base panel. The first base panel or the first channel panel may be provided with a first connection part 1-1 through which a fluid is introduced.

In addition, the second shell module 2 may include a second base panel and a second channel panel. The second base panel is disposed at a position facing the first base panel to exhibit a flat plate shape. The second channel panel is formed to protrude toward the first shell module 1 from the edge of the second base panel. A second connection part 2-1 through which fluid is discharged may be provided on the second base panel or the second channel panel.

Here, the detachable module 3 is at least the first shell module when the first shell module 1 and the second shell module 2 are supported as the length of the heating module 40 is contracted in the direction in which the fluid moves. (1) and the second skin module (2) are detachably coupled. In one embodiment of the present invention, the detailed configuration of the detachable module 3 is not limited, and the first shell module 1 and the second shell module are used using a variety of known locking coupling methods, fitting coupling methods, or screw coupling methods. (2) can be attached detachably.

The connection module 20 is coupled to the first shell module 1 and the second shell module 2, respectively. The connection module 20 can be divided into a first connection module coupled to the first skin module 1 and a second connection module coupled to the second skin module 2.

The first connection module is coupled to the first shell module 1 corresponding to the first connection part 1-1. The first connection module passes the fluid introduced from the first connection part 1-1 to be transmitted to the heating module 40.

The second connection module is coupled to the second sheath module 2 corresponding to the second connection part 2-1. The second connection module passes the fluid transferred from the heating module 40 to be transferred to the second connection part 2-1.

As shown in FIG. 4, the connection module 20 may include a first connection panel 21, a second connection panel 22, and a connection member 23.

The first connection panel 21 is coupled to the first sheath module 1 or the second sheath module 2. The first connection panel 21 has a flat plate shape. The first connection panel 21 is provided with a second connection connector 211 in communication with the first connection part 1-1 or with the second connection part 2-1.

The second connection panel 22 is disposed at a position facing the first connection panel 21. The second connection panel 22 has a flat plate shape. The second connection panel 22 is provided with a heating connector 221 for coupling with the heating module 40.

The connection member 23 connects the first connection panel 21 and the second connection panel 22 so that a connection space for storing fluid is formed between the first connection panel 21 and the second connection panel 22. . Here, the connecting member 23 may extend or contract in length in the direction in which the fluid moves in the heating module 40 according to the distance between the first and second shell modules 1 and 2. In an embodiment of the present invention, the connecting member 23 may have a bellows shape and thus have a variable length. Since the connection member 23 is corrugated, the distance between the first connection panel 21 and the second connection panel 22 is T20 as the fluid is received in the connection space as shown in FIG. 4A. The connection space can be expanded by increasing to, and conversely, as shown in FIG. 4(b), as the fluid in the connection space is discharged, the distance between the first connection panel 21 and the second connection panel 22 is t20 The connection space can be reduced by reducing to.

The circulation module 30 is coupled to the first sheath module 1 and the second sheath module 2, respectively. The circulation module 30 may be divided into a first circulation module coupled to the first sheath module 1 and a second circulation module coupled to the second sheath module 2.

The first circulation module is spaced apart from the first connection module and at least one is coupled to the first sheath module 1. Two heating modules 40 are coupled to the first circulation module in a state spaced apart from each other. Then, the fluid delivered from the heating module 40 of one of the two heating modules is accommodated in the first circulation module and then transferred to the heating module 40 of the other of the two heating modules.

The second circulation module is spaced apart from the second connection module and at least one is coupled to the second sheath module 2. Two heating modules 40 are coupled to the second circulation module in a state spaced apart from each other. Then, the fluid delivered from the heating module 40 of one of the two heating modules is accommodated in the second circulation module and then transferred to the heating module 40 of the other of the two heating modules.

The circulation module 30 may include a first circulation panel 31, a second circulation panel 32, and a circulation member 33 as shown in FIG. 5.

The first circulation panel 31 is coupled to the first sheath module 1 or the second sheath module 2. The first circulation panel 31 has a flat plate shape.

The second circulation panel 32 is disposed at a position facing the first circulation panel 31. The second circulation panel 32 has a flat plate shape. Two heating modules 40 are coupled to the second circulation panel 32 in a state spaced apart from each other. The second circulation panel 32 may be provided with an inlet connector 321 through which one of the two heating units is coupled and fluid is introduced, and an outlet connector 322 through which the other of the two heating units is coupled and the fluid is discharged. have.

The circulation member 33 connects the first circulation panel 31 and the second circulation panel 32 so that a circulation space in which fluid is stored is formed between the first circulation panel 31 and the second circulation panel 32. . Here, the length of the circulation member 33 may be extended or contracted in the direction in which the fluid moves in the heating module 40 according to the distance between the first skin module 1 and the second skin module 2. In an embodiment of the present invention, the circulation member 33 may have a bellows shape and thus may have a variable length. Since wrinkles are formed in the circulation member 33, the distance between the first circulation panel 31 and the second circulation panel 32 is T30 as the fluid is accommodated in the circulation space as shown in FIG. 5A. The circulation space can be expanded by increasing to, and conversely, as shown in FIG. 5(b), as the fluid in the circulation space is discharged, the distance between the first circulation panel 31 and the second circulation panel 32 is t30 The circulation space can be reduced by reducing to.

The heating module 40 heats the internal fluid by sunlight.

The heating module 40 may connect the connection module 20 coupled to the first skin module 1 and the inlet connector 321 of the circulation module 30 coupled to the second skin module 2. In addition, the heating module 40 may connect an outlet connector 322 of one of the two circulation modules 30 facing each other and an inlet connector 321 of the other of the two circulation modules 30 facing each other. In addition, the heating module 40 may connect the outlet connector 322 of the circulation module 30 coupled to the first skin module 1 and the connection module 20 coupled to the second skin module 2.

As shown in FIG. 6, the heating module 40 may include a first joint panel 31, a second joint panel 42, and a heating member 43.

The first joint panel 41 has a hollow flat plate shape to allow fluid to pass therethrough.

The second joint panel 42 is disposed at a position facing the first joint panel 41. The second joint panel 42 has a hollow flat plate shape to allow fluid to pass therethrough.

Then, the first joint panel 41 is coupled to the connection module 20 or the circulation module 30 coupled to the first shell module 1, and the second joint panel 42 is the second shell module 2 Since it is coupled to the circulation module 30 or the connection module 20 coupled to, the fluid flowing into the first connection part 1-1 is a combination of the connection module 20, the circulation module 30, and the heating module 40 While passing through the relationship, a zigzag flow as shown in FIG. 1 is implemented, and then discharged to the second connector 2-1.

The heating member 43 heats the internal fluid by sunlight. The heating member 43 connects the first joint panel 41 and the second joint panel 42 to form a path through which fluid moves between the first joint panel 41 and the second joint panel 42. Here, the heating member 43 may extend or contract in length in the direction in which the fluid moves. In an embodiment of the present invention, the heating member 43 may have a bellows shape and thus its length may be variable. Since a corrugation is formed in the heating member 43, the first joint panel 41 and the second joint are filled with fluid as the fluid flows in from the side of the first joint panel 41 or the second joint panel 42. By increasing the distance between the panels 42, it is possible to extend the length in the direction in which the fluid moves, and as the fluid is discharged toward the first joint panel 41 or the second joint panel 42, the fluid is discharged from the path. By reducing the distance between the first joint panel 41 and the second joint panel 42, the length may be contracted in the direction in which the fluid moves.

Here, the heating member 43 may include a black paint part 431. As an example, the black painted part 431 may be applied to the surface of the heating member 43 in a color that absorbs sunlight (eg, black). As another example, the black painted part 431 may be stacked on the surface of the heating member 43 to absorb sunlight. Then, as wrinkles are formed in the heating member 43, sunlight is refracted and scattered through the inclined surface of the wrinkles and is absorbed to improve the heating effect.

Here, the buffer module 10 is coupled to the first sheath module 1. A connection module 20 and a circulation module 30 coupled to the first shell module 1 are coupled to the buffer module 10. The buffer module 10 transfers the fluid flowing through the first connection part 1-1 to the connection module 20 (for example, the first connection module).

The buffer module 10 may include a shell coupling panel 11, a module coupling panel 12, and a buffer member 13, as shown in FIG. 3.

The shell coupling panel 11 is coupled to the first shell module 1. The shell coupling panel 11 may be coupled to the first shell module 1 by screwing through a panel fixing member 11a. The shell coupling panel 11 has a flat plate shape. A coupling inspection tool 111 may be formed through the shell coupling panel 11. Since the closing sealing member (10a) is detachably coupled to the coupling check sphere 111, the coupling check sphere 111 can be opened and closed. In addition, in a state in which the coupling inspection tool 111 is open, the communication tool 10b passes through the first connection connector 121 provided on the module coupling panel 12 and the second connection connector 211 of the connection module 20. ) Can be easily combined.

The module coupling panel 12 is disposed at a position facing the shell coupling panel 11. The module combination panel 12 has a flat plate shape. The module coupling panel 12 is provided with a first connection connector 121 coupled to the second connection connector 211 of the connection module 20. A connection module 20 and a circulation module 30 coupled to the first shell module 1 are coupled to the module combination panel 12.

The buffer member 13 connects the shell coupling panel 11 and the module coupling panel 12 so that a buffer space for storing fluid is formed between the shell coupling panel 11 and the module coupling panel 12. Here, the buffer member 13 may extend or contract in length in the direction in which the fluid moves in the heating module 40 according to the distance between the first and second shell modules 1 and 2. In an embodiment of the present invention, the buffer member 13 may have a bellows shape so that its length is variable. Since wrinkles are formed in the buffer member 13, the distance between the shell coupling panel 11 and the module coupling panel 12 is increased to T10 as the fluid is accommodated in the buffer space as shown in Fig. 3(a). The buffer space can be expanded, and on the contrary, as the fluid in the buffer space is discharged as shown in (b) of FIG. 3, the distance between the shell coupling panel 11 and the module coupling panel 12 is reduced to t10 to reduce the buffer space. Can be reduced.

And looking at the coupling relationship between the first connection connector 121 and the second connection connector 211, as shown in Fig. 7 in the state that the coupling check tool 111 is open, the communication tool 10b is the coupling check tool 111 When the first connection connector 121 and the first connection connector 121 are rotated based on the module combination panel 12, the first connection connector 121 is connected to the second connection connector 211 The first connection panel can be fixed to the module assembly panel 12 by being coupled in a screw connection manner to communicate the buffer space and the connection space. Next, when the coupling inspection hole 111 is sealed with the closing sealing member 10a, the buffer space can be sealed, and the shell coupling panel 11 can be coupled to the base panel of the first shell module 1.

In the combination between the modules described above, the panel combination module 100 is applied as shown in FIG. 8 in order to couple adjacent two panels. The panel coupling module 100 includes a first member 101 having a locking groove 101-1 and a second member having a locking protrusion 102-1 coupled to the locking groove 101-1 ( 102).

For example, in the case of combining the base panel and the first connection panel 21, the first member 101 corresponds to any one of the base panel and the first connection panel 21, and the second member 102 is It may correspond to the other one of the panel and the first connection panel 21. In addition, when the base panel and the first circulation panel 31 are combined, the first member 101 corresponds to any one of the base panel and the first circulation panel 31, and the second member 102 is a base panel. And it may correspond to the other one of the first circulation panel (31).

Likewise, when the base panel and the shell coupling panel 11 are coupled, the first member 101 corresponds to any one of the base panel and the shell coupling panel 11, and the second member 102 is the base panel and the shell. It may correspond to the other one of the combination panels 11. Here, in the case of coupling the module coupling panel 12 and the first connection panel 21, the first member 101 corresponds to any one of the module coupling panel 12 and the first connection panel 21, and The second member 102 may correspond to the other one of the module coupling panel 12 and the first connection panel 21. In addition, when the module combination panel 12 and the first circulation panel 31 are combined, the first member 101 corresponds to any one of the module combination panel 12 and the first circulation panel 31, and The second member 102 may correspond to the other one of the module combination panel 12 and the first circulation panel 31.

In addition, the second connection panel 22 and the first connection panel 41 of the connection module 20 coupled to the first skin module 1 are combined, or a connection module coupled to the second skin module 2 ( When the second connection panel 22 and the second joint panel 42 of 20) are coupled, the two panels adjacent to each other can be easily coupled by applying a flange coupling method, a screw coupling method, or a force fitting method. Likewise, in a method of coupling the circulation module 30 and the heat generating module 40, two panels adjacent to each other may be conveniently coupled by applying a flange coupling method, a screw coupling method, or a force fitting method.

The foldable sunlight heating device according to an embodiment of the present invention may further include a light transmitting module 50.

The light transmitting module 50 transmits sunlight. The light-transmitting module 50 connects the first sheath module 1 and the second sheath module 2 to form a greenhouse space filled with air between the first sheath module 1 and the second sheath module 2 . Here, one edge of the light transmission module 50 is supported on the inner surface of the first channel panel of the first shell module 1, and as the shell coupling member 52 is fitted into the inner surface of the first channel panel, the light transmission module Since one edge of the 50 is pressed and supported, one edge of the light transmitting module 50 can be connected to the first skin module 1. In addition, the other side edge of the light transmission module 50 is supported on the inner side of the second channel panel of the second sheath module 2, and the sheath coupling member 52 is fitted to the inner side of the second channel panel, so that the light transmission module Since the other side edge of the 50 is pressed and supported, the other side edge of the light transmitting module 50 can be connected to the second sheath module 2. Accordingly, the greenhouse space can be stably secured by the first skin module 1, the second skin module 2, and the light-transmitting module 50.

Here, the light-transmitting module 50 may be extended or contracted in a direction in which the fluid moves in the heating module 40 according to the distance between the first sheath module 1 and the second sheath module 2. In an embodiment of the present invention, the light transmitting module 50 may have a bellows shape so that its length is variable. Since corrugations are formed in the light transmitting module 50, as the fluid is accommodated in the greenhouse space, the distance between the first skin module 1 and the second skin module 2 is increased to at least correspond to the lengthening of the heat generating member 43. By doing so, the greenhouse space can be expanded, and conversely, as the fluid in the greenhouse space is discharged, the distance between the first and second shell modules 1 and 2 is reduced, so that at least the length of the heating member 43 is reduced. The greenhouse space can be reduced.

In an embodiment of the present invention, as shown in FIG. 9, a charge/discharge hole 501 is formed through one of the first and second skin modules 1 and 2, and the charge/discharge hole 501 Since the charge/discharge driving unit 502 for injecting air into the greenhouse space or discharging the air in the greenhouse space is coupled, the greenhouse space can be expanded or reduced in response to at least a variable length of the heating member 43.

The foldable sunlight heating device according to an embodiment of the present invention may further include a fusion prevention module 51.

The fusion prevention module 51 transmits sunlight. The fusion prevention module 51 prevents the light-transmitting module 50 from contacting at least the heating module 40 among the buffer module 10, the connection module 20, the circulation module 30, and the heating module 40. Here, one edge of the fusion prevention module 51 is supported by the shell coupling member 52 on the inner surface of the first channel panel of the first shell module 1, and the fusion coupling member 53 is inside the first channel panel. As it is fitted with the outer shell coupling member 52 from the side, the edge of one side of the fusion preventing module 51 is pressed and supported, so that one edge of the fusion preventing module 51 is attached to the first outer shell module 1 and the light-transmitting module 50 Can be connected with. In addition, the other side edge of the fusion prevention module 51 is supported by the shell coupling member 52 on the inner side of the second channel panel of the second shell module 2, and the fusion coupling member 53 is inside the second channel panel. As it is fitted with the outer shell coupling member 52 from the side, the other side edge of the fusion preventing module 51 is pressed and supported, so that the other side edge of the fusion preventing module 51 is attached to the second outer shell module 2 and the light-transmitting module 50 Can be connected with. Accordingly, when the greenhouse space is expanded or contracted, the light-transmitting module 50 is at least in contact with the heating module 40 to prevent the light-transmitting module 50 from being deformed by heat or the light-transmitting module 50 from being damaged by heat. I can.

Here, the fusion prevention module 51 may extend or contract in length in the direction in which the fluid moves in the heating module 40 according to the distance between the first and second skin modules 1 and 2. In an embodiment of the present invention, the fusion prevention module 51 may exhibit a mesh network shape so that its length is variable. Since the fusion prevention module 51 is provided with a light transmitting hole that can be expanded or contracted, it is possible to smooth the flow of air in the greenhouse space. Since the fusion prevention module 51 is provided with a light-transmitting hole, when the distance between the first skin module 1 and the second skin module 2 increases as fluid is accommodated in the greenhouse space, at least the heating member 43 The greenhouse space can be expanded in response to the extension of the length, and the transmittance hole can be expanded to prevent the decrease in the transmittance of sunlight. Conversely, as the fluid in the greenhouse space is discharged, the first skin module 1 and the second shell When the distance between the modules 2 is reduced, the greenhouse space can be reduced at least in response to the reduction in the length of the heating member 43, the light transmitting hole is contracted to prevent the transmission of sunlight, while at least the heating module 40 A blocking film is formed between the light transmitting module 50 and the heat generated by the heating module 40 may be prevented from being conducted to the light transmitting module 50.

Although not shown, the fusion prevention module 51 may have a bellows shape so that its length is variable. The fusion prevention module 51 may form a wrinkle.

Looking at the operation relationship of the foldable sunlight heating device according to an embodiment of the present invention, when the detachable module 3 is coupled to the second shell module 2 with respect to the first shell module 1, the heating module 40 ) To prevent the fluid passing through it from heating up.

The detachable module 3 is disengaged, and the second skin module 2 is separated from the first skin module 1 in correspondence with at least the maximum elongation length of the heating module 40. For example, by supplying fluid to the first connector 1-1 while the second connector 2-1 is temporarily closed, the second casing module 2 is separated from the first casing module 1 I can make it. At this time, since the charge/discharge drive unit 502 is operated to inject air into the greenhouse space, at least the heating module 40 can be maintained in a state spaced apart from the light transmitting module 50.

Then, in the foldable sunlight heating device according to an embodiment of the present invention, the area of the condensing portion to which sunlight is irradiated is expanded, and as the sunlight is irradiated to the condensing portion, the air supplied through the first connector 1-1 is heated. It is heated while moving the module 40 in a zigzag shape, and the heated air can be discharged through the second connector 2-1 and delivered to the place of use.

And when not in use, at least corresponding to the minimum contraction length of the heating module 40, supporting the second sheath module 2 relative to the first sheath module 1, and then the first sheath with the detachable module 3 The module 1 and the second skin module 2 can be combined and stored.

1 to 9 and 10 and 11, the sunlight heating system according to an embodiment of the present invention may further include a sunlight condensing module and an optical path module 200.

The sunlight collecting module heats the fluid by sunlight. Since the sunlight condensing module includes the foldable sunlight heating device according to an embodiment of the present invention, the area of the condensing portion to which sunlight is irradiated can be easily adjusted. One sunlight condensing module may be provided, and two or more may be connected in series based on the movement path of the fluid.

The optical path module 200 adjusts the direction of gaze in which the sunlight condensing module looks at the sunlight in response to the irradiation direction of sunlight.

The optical path module 200 includes a rotation drive unit 220, a rotation input unit 230, and a rotation transmission unit 240, and includes at least one of the path guide module 210 and the tilt adjustment module 250. It may contain more.

The rotation drive unit 220 rotates the drive shaft 220-1 by generating a rotational force in response to the horizontal movement of the sun from the sunrise time t1 to the sunset time t12.

The rotation input unit 230 is coupled to the sunlight condensing module.

The rotation transmission unit 240 connects the drive shaft 220-1 and the rotation input unit 230 to transmit rotational force to the rotation input unit 230. The rotation transmission unit 240 may apply various types of known power transmission methods.

The path guide module 210 connects the rotation input unit 230 and the sunlight condensing module. The path guide module 210 may adjust the direction of a line of sight in which the sunlight collecting module looks at the sunlight in response to the horizontal movement of the sun from the sunrise time t1 to the sunset time t12.

In more detail, the path guide module 210 may include a path connector 210-3, a guide block, and a slider 210-2, as shown in FIG. 10.

The path connector 210-3 connects the sunlight condensing module and the rotation input unit 230.

The guide block is coupled to the path connector 210-3. The guide block is provided with a guide path 210-1 as shown in FIG. 11 along the circumferential direction.

The slider 210-2 is provided on one side of the guide block. The slider 210-2 is fitted and coupled to the guide path 210-1 to move along the guide path 210-1 according to the rotation of the guide block.

Here, any one of the guide block and the slider 210-2 can be moved up and down based on the path connector 210-3. As an example, the guide block may be coupled to the path connector 210-3 so as to move up and down. As another example, the slider 210-2 may be provided on one side of the guide block so as to move up and down.

Then, since the rotational drive unit 220 adjusts the rotation speed in response to the sunrise time t1 and the sunset time t12, the sunlight concentrating module corresponds to the horizontal movement of the sun from the sunrise time t1 to the sunset time t12. You can adjust the direction of your gaze looking at this sunlight. Since the rotation input unit 230 continues to rotate forward or reverse after the sunset time t12, the direction in which the sunlight condensing module looks at the sunlight may be initialized according to the sunrise time.

Here, the unexplained reference numeral t3 denotes a slider in the guide path 210-1 corresponding to the sunrise time t1 or the sunset time t12 when the slider 210-2 moves along the guide path 210-1. 210-2) represents the inflectional section.

The tilt adjustment module 250 connects the rotation input unit 230 and the sunlight condensing module. The inclination adjustment module 250 adjusts the direction of the line of sight in which the sunlight collecting module looks at the sunlight in response to the vertical movement of the sun from the sunrise time t1 to the sunset time t12.

In more detail, the tilt adjustment module 250 includes a first connector 210-31, a second connector 210-32, a first gear part 251, and a second gear part, as shown in FIG. It may include a 252, a third gear portion 253, and an adjustment wire portion 254.

The first connectors 210-31 are coupled so that the sunlight condensing module is rotatable in the vertical direction.

The second connector 210-32 extends from the first connector 210-31 and the rotation input unit 230 is coupled.

The first gear part 251 is provided in any one of the first connector 210-31 and the second connector 210-32. Although not shown, the first engagement portion is detachably coupled to a part of the entire edge along the circumferential direction of the first gear portion 251 in response to the sunrise time t1 to the maximum altitude time. In addition, a first dummy part is formed on the rest of the entire edge along the circumferential direction of the first gear part 251.

The second gear part 252 is spaced apart from the first gear part 251 and is provided in the other one of the first connector 210-31 and the second connector 210-32. Although not shown, the second engagement portion is detachably coupled to a part of the entire edge along the circumferential direction of the second gear portion 252 in correspondence with the maximum altitude time to the sunset time t12. In addition, a second dummy part is formed on the rest of the entire edge along the circumferential direction of the second gear part 252.

Here, the first engagement portion is disposed at a position facing the second dummy portion, and the second engagement portion is disposed at a position facing the first dummy portion.

The third gear part 253 is provided between the first gear part 251 and the second gear part 252. The third gear part 253 intermittently meshes with any one of the first gear part 251 and the second gear part 252. In other words, the third gear portion 253 meshes with the first meshing portion of the first gear portion 251 or meshes with the second meshing portion of the second gear portion 252.

The adjustment wire part 254 is supported by the third gear part 253, and both ends are respectively attached to both ends of the sunlight condensing module (for example, the first sheath module 1 and the second sheath module 2). It is fixed.

At this time, since the rotational drive unit 220 adjusts the rotational speed in response to the sunrise time t1 and the sunset time t12, the rotation input unit corresponds to the sunrise time t1, the maximum altitude time, and the sunset time t12. The rotation speed of 230 can be adjusted.

Here, when the rotation input unit 230 is rotated forward and the third gear unit 253 first engages with the first engagement unit of the first gear unit 251, the adjustment wire according to the forward rotation of the third gear unit 253 The unit 254 is moved so that the sunlight condensing module looks at the sun from the sunrise time t1 to the maximum altitude time.

In addition, when the rotation input unit 230 is continuously rotated forward and the third gear unit 253 is secondarily engaged with the second engagement unit of the second gear unit 252, the reverse rotation of the third gear unit 253 occurs. Accordingly, the control wire part 254 is moved so that the sunlight condensing module looks at the sun from the maximum altitude time to the sunset time t12.

For example, based on Korea, the sunlight condensing module is inclined toward the east and is inclined.

Here, when the third gear portion 253 first engages with the first engagement portion of the first gear portion 251 and rotates forward, the adjustment wire portion 254 moves, so that the first gear portion 253 moves as the altitude of the sun increases. The inclination angle at which the sunlight condensing module is inclined with respect to the connectors 210-31 may be increased so that the direction of the sunlight concentrating module's gaze looking at the sunlight may look at the sun.

In addition, when the third gear portion 253 is secondly engaged with the second engaging portion of the second gear portion 252 and rotates reversely, the adjustment wire portion 254 moves, so that the first As the sunlight condensing module is inclined with respect to the connectors 210-31, the inclination angle may be reduced so that the direction of the sunlight concentrating module's gaze looking at the sunlight may look at the sun. At this time, the sunlight condensing module is inclined toward the west to form an inclined state.

After the sunset time t12, if the rotation input unit 230 is continuously rotated forward or the rotation input unit 230 is rotated in reverse, the sunlight condensing module is operated in the opposite of the above-described operation, and sunlight is generated in response to the sunrise time t1. The condensing module may be inclined toward the east again to achieve an inclined state.

According to the foldable sunlight heating device and the sunlight heating system equipped with it, it is possible to control the area of the heat-collecting part to which sunlight is irradiated, and when not in use, the heat-collecting part is corroded by the sunlight by blocking the sunlight irradiated to the heat collecting part. Can be prevented.

In addition, the present invention can sufficiently implement the advantages disclosed in the effects of the present invention.

As described above, preferred embodiments of the present invention have been described with reference to the drawings, but those skilled in the art will variously modify the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. Can be modified or changed.

1: first sheath module 1-1: first connector 2: second sheath module
2-1: second connector 3: detachable module 10: buffer module
11: shell coupling panel 111: coupling inspection section 12: module coupling panel
121: first connection connector 13: buffer member 10a: closing sealing member
10b: communication tool 20: connection module 21: first connection panel
211: second connection connector 22: second connection panel 221: heating connector
23: connection member 30: circulation module 31: first circulation panel
32: second circulation panel 321: inlet connector 322: outlet connector
33: circulation member 40: heating module 41: first joint panel
42: second joint panel 43: heating member 431: black painted part
50: light transmitting module 51: fusion prevention module 52: outer shell coupling member
53: fusion bonding member 501: charge/discharge hole 502: charge/discharge drive unit
100: panel coupling module 101: first member 101-1: locking groove
102: second member 102-1: locking projection 200: optical path module
210: path guide module 210-1: guide path 210-2: slider
210-3: route connector 210-31: first connector 210-32: second connector
220: rotation drive unit 220-1: drive shaft 230: rotation input unit
240: rotation transmission unit 250: inclination adjustment module 251: first gear unit
252: second gear part 253: third gear part 254: adjustment wire part
11a: Panel fixing material t1: Sunrise time t2: Sunset time

Claims (10)

A first shell module provided with a first connector through which fluid flows;
A second skin module disposed at a position facing the first skin module and provided with a second connector through which fluid is discharged;
A connection module coupled to the first skin module and the second skin module, respectively, to pass the fluid introduced from the first connector or to pass the fluid introduced from the first connector or to the second skin module to deliver the fluid to the second connector;
A circulation module coupled to the first sheath module and the second sheath module, respectively, and having an inlet connector through which fluid flows in and an outlet connector through which fluid is discharged; And
The internal fluid is heated by sunlight, and the connection module coupled to the first skin module and the inlet connector of the circulation module coupled to the second skin module are connected, or an outlet of any one of the two circulation modules facing each other A heating module connecting the other inlet connector of the two circulation modules facing the connector, or connecting the outlet connector of the circulation module coupled to the first skin module and the connection module coupled to the second skin module;
A light-transmitting module that transmits sunlight and connects the first skin module and the second skin module to form a greenhouse space filled with air between the first skin module and the second skin module; And
Including; a fusion prevention module that transmits sunlight, but prevents the light transmitting module from contacting the connection module, the circulation module, and the heating module,
At least the heat generating module of the connection module, the circulation module and the heat generating module extends or contracts in a direction in which the fluid moves according to a distance between the first skin module and the second skin module,
The light-transmitting module extends or contracts in a direction in which the fluid moves in the heating module according to the distance between the first and second shell modules,
The fusion prevention module is a foldable sunlight heating device, characterized in that the length is extended or contracted in a direction in which the fluid is moved in the heating module according to a distance between the first and second shell modules.
The method of claim 1,
The heating module,
A first joint panel;
A second joint panel disposed at a position facing the first joint panel; And
And a heating member connecting the first joint panel and the second joint panel to heat the internal fluid by sunlight, and to form a path through which the fluid moves between the first joint panel and the second joint panel. and,
The heating member is a foldable sunlight heating device, characterized in that the length is extended or contracted in the direction in which the fluid is moved.
The method of claim 2,
In the heating member,
A folding sunlight heating device comprising: a black chilbu applied to the surface in a color absorbing sunlight or laminated on the surface to absorb sunlight.
The method of claim 1,
A buffer module coupled to the connection module and the circulation module coupled to the first skin module, coupled to the first skin module, and transferring fluid flowing through the first connector to the connection module; And
Detachable to detachably couple the first skin module and the second skin module when the second skin module is supported by the first skin module at least as the length of the heating module shrinks in the direction in which the fluid moves module; Foldable sunlight heating device, characterized in that it further comprises at least any one of.
A first shell module provided with a first connector through which fluid flows;
A second skin module disposed at a position facing the first skin module and provided with a second connector through which fluid is discharged;
A connection module coupled to the first skin module and the second skin module, respectively, to pass the fluid introduced from the first connector or to pass the fluid introduced from the first connector or to the second skin module to deliver the fluid to the second connector;
A circulation module coupled to the first sheath module and the second sheath module, respectively, and having an inlet connector through which fluid flows in and an outlet connector through which fluid is discharged; And
The internal fluid is heated by sunlight, and the connection module coupled to the first skin module and the inlet connector of the circulation module coupled to the second skin module are connected, or an outlet of any one of the two circulation modules facing each other A heating module connecting the other inlet connector of the two circulation modules facing the connector, or connecting the outlet connector of the circulation module coupled to the first skin module and the connection module coupled to the second skin module; And
A light-transmitting module that transmits sunlight but connects the first skin module and the second skin module so that a greenhouse space filled with air is formed between the first skin module and the second skin module.
At least the heat generating module of the connection module, the circulation module and the heat generating module extends or contracts in a direction in which the fluid moves according to a distance between the first skin module and the second skin module,
The light-transmitting module extends or contracts in a direction in which the fluid moves in the heating module according to the distance between the first and second shell modules,
In any one of the first sheath module and the second sheath module,
The charge/discharge hole; is formed through,
In the charge/discharge hole,
Foldable sunlight heating device, characterized in that coupled to a charge/discharge drive unit for injecting air into the greenhouse space or discharging the air from the greenhouse space.
The method of claim 5,
The heating module,
A first joint panel;
A second joint panel disposed at a position facing the first joint panel; And
And a heating member connecting the first joint panel and the second joint panel to heat the internal fluid by sunlight, and to form a path through which the fluid moves between the first joint panel and the second joint panel. and,
The heating member is a foldable sunlight heating device, characterized in that the length is extended or contracted in the direction in which the fluid is moved.
The method of claim 6,
In the heating member,
A folding sunlight heating device comprising: a black chilbu applied to the surface in a color absorbing sunlight or laminated on the surface to absorb sunlight.
The method of claim 5,
A buffer module coupled to the connection module and the circulation module coupled to the first skin module, coupled to the first skin module, and transferring fluid flowing through the first connector to the connection module; And
Detachable to detachably couple the first skin module and the second skin module when the second skin module is supported by the first skin module at least as the length of the heating module shrinks in the direction in which the fluid moves module; Foldable sunlight heating device, characterized in that it further comprises at least any one of.
A sunlight condensing module that heats the fluid by sunlight; And
Including; a light path module for adjusting the direction of the line of sight in which the sunlight condensing module looks at the sunlight in response to the irradiation direction of sunlight,
The sunlight condensing module,
A sunlight heating system comprising the foldable sunlight heating device according to any one of claims 1 to 8.
The method of claim 9,
The optical path module,
A rotation drive unit for rotating the drive shaft by generating a rotational force in response to the horizontal movement of the sun from sunrise time to sunset time;
A rotation input unit coupled to the sunlight condensing module; And
Includes; a rotation transmission unit for transmitting the rotational force to the rotation input unit,
A path guide module that connects the rotation input unit and the sunlight condensing module, and adjusts the direction of the sunlight concentrating module's gaze to the sunlight in response to the horizontal movement of the sun from sunrise time to sunset time; And
A tilt adjustment module for connecting the rotation input unit and the sunlight condensing module, and adjusting the direction of the sunlight concentrating module's view of the sunlight in response to vertical movement of the sun from sunrise time to sunset time;
Sunlight heating system, characterized in that it further comprises at least any one of.

Images