Radiation panel and radiation heating and cooling system

Abstract

To provide a radiation panel which promotes transfer of heat contained in a gas to a heat radiation member, and to provide a radiation cooling / heating system.SOLUTION: A radiation panel includes: a flow passage formation member for forming a gas flow passage; and a restriction member. The flow passage formation member has: a surface plate which emits or receives thermal radiation energy; and an enclosing member which forms the gas flow passage in conjunction with the surface plate. The restriction member is provided in the gas flow passage with a gap formed between the restriction member and the surface plate and limits a cross-sectional area of the gas flow passage, and a plurality of the restriction members is provided at predetermined intervals along the direction in which the gas flows in the gas flow passage. The radiation panel is able to increase a flow rate of the gas passing through the gap between the surface plate and the restriction members and promotes transfer of cold or heat of the gas to the surface plate. A radiation cooling / heating system comprises: the radiation panel; a temperature adjustment device for adjusting the temperature of the gas; and a distribution duct for guiding the temperature-adjusted gas to the gas flow passage.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to a radiation panel and a radiation heating and cooling system, and particularly to a radiation panel and a radiation heating and cooling system that promote the transfer of heat carried by a gas to a heat radiation member.

Background Art

[0002] In recent years, as a heating and cooling method that achieves both energy saving and comfort, the use of a radiation heating and cooling system that performs heating and cooling by radiant heat has been increasing. A radiation heating and cooling system is a system that cools or heats a member (such as a ceiling) facing the space to be heated and cooled, and performs heating and cooling of the target space by radiant heat from the cooled or heated member. As a member used in a radiation heating and cooling system, there is a partition panel that provides a plurality of flow paths for flowing temperature-controlled air on the back side of a surface plate facing the target space, and transfers the heat of the air flowing through these flow paths to the surface plate, and radiates cold or warm heat from the surface plate (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In heating and cooling by radiation, if more heat carried by a gas can be transferred to a member that radiates cold or warm heat, heating and cooling can be performed more effectively, which also contributes to energy saving.

[0005] In view of the above problems, the present disclosure relates to providing a radiation panel and a radiation heating and cooling system that promote the transfer of heat carried by a gas to a member that radiates cold or warm heat.

Means for Solving the Problems

[0006] The radiation panel according to the first aspect of the present disclosure includes a surface plate that emits or receives thermal radiation energy, a flow path forming member having an enclosing member that cooperates with the surface plate to form a gas flow path through which gas flows, and a restricting member that is provided in the gas flow path with a gap between the restricting member and the surface plate and restricts the cross-sectional area of the gas flow path. A plurality of the restricting members are provided at predetermined intervals along the direction in which the gas flows inside the gas flow path.

[0007] With this configuration, the flow velocity of the gas passing through the gap between the surface plate and the restricting member can be increased, and the transfer of the cold or warm heat possessed by the gas to the surface plate can be promoted.

[0008] Further, the radiation panel according to the second aspect of the present disclosure is the radiation panel according to the first aspect of the present disclosure, wherein the restricting member includes a closing plate that extends in a direction intersecting the surface plate and closes the cross-sectional area of the gas flow path leaving a gap, and a parallel plate that extends along the surface plate from the closing plate in the direction in which the gas flows.

[0009] With this configuration, a gap between the surface plate and the restricting member is formed over the length of the parallel plate, and the flow of the gas passing through the gap can be stabilized.

[0010] Further, the radiation panel according to the third aspect of the present disclosure is the radiation panel according to the second aspect of the present disclosure, wherein the closing plate is formed with through holes through which a predetermined flow rate of the gas can pass.

[0011] With this configuration, the pressure difference between the upstream side and the downstream side across the restricting member can be reduced, and the generation of vortices of the gas near the end of the parallel plate can be suppressed.

[0012] Further, in the radiation panel according to the fourth aspect of the present disclosure, in the radiation panel according to any one of the first to third aspects of the present disclosure, the gas flow path is formed to be elongated in the flow direction in which the gas flows, the surrounding member is connected to the surface plate and has side plates extending in the flow direction, and a plurality of the flow path forming members are arranged in a direction intersecting the flow direction so as to share the side plates or the side plates are adjacent to each other.

[0013] With this configuration, it is possible to increase the area of the surface plate that efficiently transfers the cold or heat held by the gas.

[0014] Further, in the radiation panel according to the fifth aspect of the present disclosure, in the radiation panel according to any one of the first to fourth aspects of the present disclosure, a direction conversion member is provided at an outlet through which the gas flows out of the gas flow path and has a contour for changing the flow direction of the gas so that the gas flowing out of the outlet flows along the surface plate outside the gas flow path.

[0015] With this configuration, it is possible to transfer the cold or heat remaining in the gas after passing through the gas flow path from the outside of the gas flow path to the surface plate.

[0016] Further, in the radiation panel according to the sixth aspect of the present disclosure, in the radiation panel according to the fifth aspect of the present disclosure, an air flow guide plate is provided on the surface plate outside the gas flow path and has a contour for changing the flow direction of the gas flowing along the surface plate outside the gas flow path in a direction away from the surface plate.

[0017] With this configuration, it is possible to forcibly convect the gas toward the space that radiates cold or heat from the surface plate, and assist in cooling or heating the space.

[0018] Moreover, the radiant heating and cooling system according to the seventh aspect of the present disclosure includes a radiant panel according to any one of the first to sixth aspects of the present disclosure, temperature control equipment for adjusting the temperature of the gas, and a distribution duct for guiding the gas whose temperature has been adjusted by the temperature control equipment to the gas flow path.

[0019] With this configuration, the cooling or heating can be performed by transferring the cooling or heating heat possessed by the gas to the surface plate and performing heat radiation from the surface plate.

Advantages of the Invention

[0020] According to the present disclosure, the flow velocity of the gas passing through the gap between the surface plate and the restricting member can be increased, and the transfer of the cooling or heating heat possessed by the gas to the surface plate can be promoted.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0022] Hereinafter, embodiments will be described with reference to the drawings. In each figure, members that are the same or corresponding to each other are given the same or similar reference numerals, and redundant descriptions are omitted.

[0023] First, referring to FIG. 1, a radiation panel 10 according to an embodiment will be described. FIG. 1 is an exploded perspective view of the radiation panel 10. The radiation panel 10 is for performing heating and cooling of the surroundings by passing air whose temperature is adjusted (hereinafter referred to as "temperature-controlled air A") inside and radiating cold or heat from the cooled or heated radiation panel 10. Here, when the radiation panel 10 is cooled and cold is radiated, the radiation panel 10 having a temperature lower than the surroundings absorbs heat from the surroundings, so a sense of coolness can be obtained. For convenience, it is expressed that the radiation panel 10 radiates cold. Also, performing heating and cooling means performing either cooling or heating according to the situation. The radiation panel 10 for performing heating and cooling can typically perform both cooling and heating. In the present embodiment, the radiation panel 10 will be described as being installed on the ceiling of a building (such as a factory, a multi-purpose hall, an office, etc.). The radiation panel 10 includes, as main components, a first lid 11, a second lid 15, and a heat transfer promoting element 20. Hereinafter, the configuration of the radiation panel 10 will be described with appropriate reference to FIG. 1.

[0024] FIG. 2(A) is a perspective view of the first cover 11, and FIG. 2(B) is a partial front view of the first cover 11. The first cover 11 is a member that constitutes approximately half of the exterior of the radiation panel 10. The first cover 11 is formed by folding a thin plate-like member. The first cover 11 is typically composed of a steel plate, but it may also be composed of other metal plates or other materials (materials other than metals) that are rich in formability and excellent in heat transfer by thermal radiation. Further, the material constituting the first cover 11 may be subjected to a surface treatment such as zinc plating. The first cover 11 has a first side plate 13 and small protrusions 14 formed by folding the thin plate-like member. In the present embodiment, the first side plate 13 is formed by bending the thin plate-like member at 90 degrees, folding it back 180 degrees at a predetermined length from the bent position, and then bending it 90 degrees on the side opposite to the side where the thin plate-like member exists at the position where it was bent 90 degrees earlier. Since it is folded in this way, in the present embodiment, the first side plate 13 is in a state where two thin plate-like members overlap. The small protrusions 14 are shorter in height than the first side plate 13 but are formed by the same folding process as the first side plate 13. A plurality of first side plates 13 and small protrusions 14 are respectively formed on the first cover 11, and the first side plates 13 and the small protrusions 14 are formed alternately. The first side plates 13 and the small protrusions 14 extend parallel to each other along the direction in which the folding line extends when the thin plate-like member is bent. The surface of the first cover 11 on the side opposite to the side where the first side plates 13 and the small protrusions 14 protrude is flush. The portion of the surface of the first cover 11 that is flush is referred to as the surface plate 12. By the above-described folding process, in the present embodiment, the surface plate 12, the first side plates 13, and the small protrusions 14 are integrally formed. The surface plate 12 is capable of emitting (during heating) or receiving (during cooling) thermal radiation energy.

[0025] FIG. 3(A) is a perspective view of the second lid 15, and FIG. 3(B) is a partial front view of the second lid 15. Hereinafter, when referring to the configuration of the first lid 11, FIG. 2 will be appropriately referred to. The second lid 15 is a member that constitutes approximately the remaining half of the exterior of the radiation panel 10. The second lid 15 is formed by folding a thin plate-like member. The second lid 15 is typically composed of the same material as the first lid 11, but it may be composed of a different material from the first lid 11. The second lid 15 can adopt the materials that the first lid 11 can adopt. The second side plate 17 is formed on the second lid 15 by folding the thin plate-like member. The second lid 15 is not formed with the same configuration as the small protrusion 14 in the first lid 11. In this embodiment, the second side plate 17 is formed in the same manner as the first side plate 13 and has the same predetermined length as the first side plate 13. A plurality of second side plates 17 are formed on the second lid 15. Each second side plate 17 extends parallel to the direction in which the folding line extends when the thin plate-like member is bent. The interval between adjacent second side plates 17 is the same as the interval between adjacent first side plates 13 in the first lid 11 (in other words, twice the interval between the first side plate 13 and the small protrusion 14). The surface on the side opposite to the side where the second side plate 17 protrudes is flush. The portion of the surface of the second lid 15 that is flush is referred to as the opposing plate 16. In this embodiment, the opposing plate 16 and the second side plate 17 are integrally formed by folding the thin plate-like member. In this embodiment, an inlet 18 is formed in the opposing plate 16. The inlet 18 is an opening through which gas (temperature-controlled air A) passes. In this embodiment, the inlet 18 is formed at the center of the opposing plate 16 in the direction in which the second side plate 17 extends. Also, one inlet 18 is formed for each interval between adjacent second side plates 17. Therefore, the number of inlets 18 formed is equal to the number of second side plates 17 minus one.

[0026] As shown in FIGS. 4(A) and 4(B), the exterior of the radiation panel 10 is configured by combining a first lid 11 and a second lid 15. The first lid 11 and the second lid 15 are combined such that a first side panel 13 and a second side panel 17 are sandwiched between a surface plate 12 and a counter plate 16. At this time, the second side panels 17 are combined so as to be in contact with one side surface of each small protrusion 14. By combining the first lid 11 and the second lid 15 in this way, a plurality of spaces partitioned by the first side panel 13 and the second side panel 17 are formed between the surface plate 12 and the counter plate 16. The space surrounded by the surface plate 12, the first side panel 13, the counter plate 16, and the second side panel 17 becomes a gas flow path R through which conditioned air A, which is a form of gas, flows. Therefore, the first side panel 13, the second side panel 17, and the respective portions of the surface plate 12 and the counter plate 16 between the first side panel 13 and the second side panel 17 constitute a flow path forming member 19. Further, the portions other than the surface plate 12 of the flow path forming member 19 (the first side panel 13, the small protrusion 14, the counter plate 16, the second side panel 17) correspond to a surrounding member. In the present embodiment, a plurality of gas flow paths R are formed by combining the first lid 11 and the second lid 15. The gas flow path R is formed in an elongated shape in the direction in which the bending line extends when the thin plate-like member is bent when the first lid 11 and the second lid 15 are molded. Hereinafter, for convenience of explanation, the direction in which the bending line extends when the thin plate-like member is bent may be referred to as the axial direction X. Further, with respect to the gas flow path R, the distance in the axial direction X may be referred to as "length", the distance in the direction orthogonal to the axial direction X and parallel to the surface plate 12 may be referred to as "width", and the distance in the direction orthogonal to the axial direction X and the surface plate 12 may be referred to as "height". Expressing the gas flow path R using these terms, it can be said that a plurality of gas flow paths R elongated in the axial direction X are arranged in the width direction within the radiation panel 10. The predetermined length of the first side panel 13 and the second side panel 17 described above may be determined so as to be the height of the gas flow path R. Also, one inlet 18 can be expressed as being formed at the center in the axial direction X across two gas flow paths R.

[0027] Each gas flow path R has the function of a partition plate in which the first side plate 13 and the second side plate 17 partition adjacent gas flow paths R. In the present embodiment, the gas flow paths R except for the gas flow paths R at both ends in the width direction share the first side plate 13 or the second side plate 17 as a partition plate with the adjacent gas flow paths R. In the present embodiment, since the first side plate 13 is integrally formed with the top plate 12, it can be said that it is connected to the top plate 12. Also, in the present embodiment, although the second side plate 17 is formed separately from the top plate 12, since it is in contact with the top plate 12, it can be said that it is connected to the top plate 12. Thus, being connected to the top plate 12 includes not only being integrally formed but also being in contact with a separated one. Therefore, the first side plate 13 and the second side plate 17 that function as partition plates correspond to side plates. In the present embodiment, the cross section orthogonal to the axial direction X of the gas flow path R is formed in a rectangular shape. The size of the radiation panel 10 and the gas flow path R therein can be appropriately determined according to the place and use where the radiation panel 10 is installed. The gas flow path R is typically configured such that the ratio of the length to the width (length / width) is 5 or more, and may be about 10 or 20, or may be about 30 to 85, and is generally about 40 to 45 in the present embodiment.

[0028] As described above, each gas flow path R has an inlet 18 formed at the center in the axial direction X, while outlets 29 are formed at both ends in the axial direction X. The inlet 18 is an opening through which the temperature-controlled air A flows into the gas flow path R. The outlet 29 is an opening through which the temperature-controlled air A flows out from the gas flow path R. In the present embodiment, the outlets 29 are formed by the both ends in the axial direction X of the combined first lid 11 and second lid 15 being open without being blocked. For each gas flow path R, with the inlet 18 formed at the center in the axial direction X and the outlets 29 formed at both ends in the axial direction X, the inlet 18 and the outlets 29 are separated by half the length of the first lid 11 (second lid 15) in the present embodiment.

[0029] FIG. 5(A) is a partial perspective view of the heat transfer promoting element 20, FIG. 5(B) is a perspective view of the restricting member 22 included in the heat transfer promoting element 20, and FIG. 5(C) is a partial side cross-sectional view of the flow path forming member 19 to which the heat transfer promoting element 20 is attached. The heat transfer promoting element 20 (hereinafter simply referred to as "element 20") is to be mounted in the gas flow path R. In FIG. 1, the elements 20 are arranged in the same number as the gas flow paths R (one gas flow path R from the inlet 18 to one outlet 29) formed by the first lid 11 and the second lid 15. FIG. 5(A) shows a state in which the flow path forming member 19 is not shown with a plurality of elements 20 installed in each gas flow path R. The element 20 has a pedestal 21 and a restricting member 22. The pedestal 21 is a member for positioning a plurality of restricting members 22 in a predetermined positional relationship. The pedestal 21 is formed by processing a thin plate-like member to the size of the opposing plate 16 in one gas flow path R. That is, the pedestal 21 is generally formed to have a dimension corresponding to the distance between the first side plate 13 and the small projection 14 of the first lid 11 in the width direction and a dimension corresponding to the distance between the inlet 18 and the outlet 29 in the length direction. The pedestal 21 is installed on the opposing plate 16 when the element 20 is mounted in the gas flow path R. Hereinafter, when referring to the relationship between the element 20 including the pedestal 21 and the restricting member 22 and the first lid 11, the second lid 15, and the gas flow path R, unless otherwise specified, it is assumed that the element 20 is mounted in the gas flow path R. The pedestal 21 can be made of various materials such as resin and metal, but in this embodiment, it is preferable to use a material with excellent heat insulation properties in order to suppress heat transfer to the opposing plate 16 that is not a radiation surface.

[0030] The restricting member 22 is a member that restricts the flow area (cross-sectional area of the gas flow path R) through which the temperature-controlled air A flowing in the axial direction X of the gas flow path R can pass. The restricting member 22 has a closing plate 23 and parallel plates 24. The closing plate 23 is composed of a thin plate-like member and is the main member of the restricting member 22 that generally closes a cross-section intersecting the axial direction X of the gas flow path R. The closing plate 23 is attached to the pedestal 21 and extends from the pedestal 21 toward the surface plate 12 but does not contact the surface plate 12. When viewed in the height direction, the closing plate 23 is inclined such that the side closer to the surface plate 12 is located on the downstream side in the direction in which the temperature-controlled air A flows, rather than the side of the pedestal 21. Hereinafter, the direction in which the temperature-controlled air A flows in the gas flow path R may be simply referred to as the "flow direction". In the present embodiment, the flow direction is parallel to the axial direction X. The closing plate 23 is preferably inclined such that the angle formed with the surface of the pedestal 21 on the downstream side in the flow direction is approximately 45 degrees to 75 degrees, and in the present embodiment, it is inclined to be approximately 60 degrees. In the width direction, the closing plate 23 is preferably formed to have dimensions that ideally contact the first side plate 13 and the second side plate 17 on both sides. However, considering the workability (ease of assembly) when attaching the element 20 to the second lid 15 and aligning the first lid 11 therewith, a very small gap may be formed between the closing plate 23 and the first side plate 13 and / or the second side plate 17.

[0031] The parallel plate 24 is composed of a thin plate-like member and extends downstream in the flow direction from the end on the surface plate 12 side of the closing plate 23. The parallel plate 24 is typically formed of the same material as the closing plate 23. Typically, a single thin plate-like member is bent and configured to be distinguishable into the closing plate 23 and the parallel plate 24 with a folding line as the boundary. That is, the restricting member 22 is distinguished into the closing plate 23 and the parallel plate for convenience of explanation, but typically the closing plate 23 and the parallel plate are integrally formed. However, the closing plate 23 and the parallel plate 24 may be composed of mutually separated and independent members and joined to each other afterwards. In the present embodiment, the parallel plate 24 extends parallel to the surface plate 12. A gap 26 is formed between the parallel plate 24 and the surface plate 12. The gap 26 serves as a flow path through which the temperature-controlled air A can pass and plays a role in increasing the flow velocity of the passing temperature-controlled air A. The flow velocity of the temperature-controlled air A passing through the gap 26 is preferably set to be approximately 3 m / s to 5 m / s, and may be about 7 m / s. The gap 26 may be determined in terms of dimensions from the viewpoint of giving such a flow velocity to the temperature-controlled air A, for example, it may be about 5 mm to 10 mm, or may be about 7 mm to 8 mm. In addition, in the present embodiment, the length of the parallel plate 24 in the axial direction X is about 35 mm to 40 mm.

[0032] The closing plate 23 is formed with a through hole 25 through which the temperature-controlled air A can pass. The through hole 25 serves to reduce the differential pressure between the front and back surfaces of the restricting member 22 in order to suppress the generation of vortices of the temperature-controlled air A that wraps around to the back side of the parallel plate 24 on the downstream side in the flow direction of the parallel plate 24. In the present embodiment, the through hole 25 is formed at the center in the width direction and at a position closer to the pedestal 21 than the center in the height direction with respect to the closing plate 23, but it is not limited to this position. For example, the through hole 25 may be formed so as to be in contact with the pedestal 21. The through hole 25 is formed to have a size and shape that allow a predetermined flow rate of the temperature-controlled air A to pass through. The predetermined flow rate referred to here is a flow rate that can reduce the differential pressure between both sides of the restricting member 22 to such an extent that vortices of the temperature-controlled air A do not substantially occur around the downstream portion in the flow direction of the parallel plate 24. In the present embodiment, the through hole 25 is formed in a circular shape with a diameter of about 5 mm. In the present embodiment, the diameter of the through hole 25 is formed to be about 0.2 times (about 1 / 5) the width of the closing plate 23. Note that the size of the through hole 25 can be appropriately changed within a range that can achieve the purpose of suppressing the generation of vortices of the temperature-controlled air A on the downstream side in the flow direction of the restricting member 22, and the shape can also be appropriately changed. For example, the size of the through hole 25 may be 3 mm to 10 mm (including 8 mm, etc.) or 0.1 to 0.5 times (including 0.3 times, etc.) the width of the closing plate 23, and the shape of the through hole 25 may be an ellipse or a polygon such as a quadrilateral, hexagon, or octagon.

[0033] One element 20 is composed of a plurality of restricting members 22 attached to a pedestal 21 at a predetermined interval in the axial direction X. At this time, each restricting member 22 attached to the pedestal 21 is arranged such that the direction in which the parallel plate 24 extends with respect to the closing plate 23 is aligned. The element 20 is attached to the gas flow path R such that in each restricting member 22, the closing plate 23 is on the side of the inlet 18 and the parallel plate 24 is on the side of the outlet 29. In other words, the element 20 is arranged in such a direction that the closing plate 23 is located on the upstream side in the flow direction of the temperature-controlled air A flowing through the gas flow path R, and the parallel plate 24 is located on the downstream side. The predetermined interval between each restricting member 22 attached to the pedestal 21 is preferably determined from the viewpoint of forming as many gaps 26 as possible in the axial direction X, which can make the flow velocity of the temperature-controlled air A approximately 3 m / s to 5 m / s (in some cases, about 7 m / s). In the present embodiment, the predetermined interval between each restricting member 22 is set to about 100 mm. The predetermined interval is the interval between the reference points (for example, the end position of the parallel plate 24 at the most downstream position in the flow direction) of each restricting member 22.

[0034] The radiation panel 10 can be configured by assembling the above-described first lid 11, second lid 15, and element 20 as follows. First, place the second lid 15 on a workbench (working floor) with the second side plate 17 above the opposing plate 16. Next, attach the element 20 onto the opposing plate 16 between the second side plates 17. Since the element 20 fits into two rows in the width direction and two tiers in the length direction with the inlet 18 as the boundary for each space between adjacent second side plates 17, a total of four elements 20 will be attached. At this time, all four elements 20 attached to one space between adjacent second side plates 17 are aligned so that the parallel plate 24 extending from the closing plate 23 is positioned on the side of the outlet 29 rather than the closing plate 23 (downstream in the flow direction). Also, move the two elements 20 arranged side by side in the width direction closer to the respective adjacent second side plates 17. By moving them closer in this way, a space is created between the two elements 20 arranged side by side in the width direction for the first side plate 13 to fit in. When attaching the pedestal 21 of the element 20 to the opposing plate 16 of the second lid 15, it is done by welding, adhesion, etc. to prevent the element 20 from falling even if the opposing plate 16 is turned upside down. The attachment of four elements 20 for each space is carried out for the entire second lid 15. Next, cover the second lid 15 with the first lid 11 to which the element 20 is attached. At this time, insert the first side plate 13 into each space between two adjacent elements 20 in the width direction and install the first lid 11 so that the small protrusion 14 contacts the second side plate 17. When assembling the second lid 15, element 20, and first lid 11 in the above manner, two gas flow paths R are formed between each first side plate 13 and second side plate 17, sandwiching the inlet 18, and one element 20 is provided in each of the two gas flow paths R. The radiation panel 10 configured in this way has openings at both end faces in the axial direction X and an opening at the central portion of the opposing plate 16 in the axial direction X in this embodiment. The openings at both end faces of the radiation panel 10 in the axial direction X become the outlets 29. The opening at the central portion of the opposing plate 16 in the axial direction X becomes the inlet 18.In addition, from the perspective of weight reduction, the materials of the respective members constituting the radiation panel 10 may be a composite material, such as an aluminum plate or a steel plate in the case of metal, and resin for the parts that do not contribute to heat transfer. When the radiation panel 10 is installed on the ceiling of the space to be air-conditioned, since the surface plate 12 is to be installed facing downward (toward the space to be air-conditioned), the up and down directions are reversed compared to the above-described assembly. Also, when the radiation panel 10 is installed on the ceiling of the space to be air-conditioned, the following members may be further added.

[0035] FIG. 6(A) is a perspective view of the radiation panel 10, and FIG. 6(B) is a side view of the radiation panel 10. In FIGS. 6(A) and 6(B), the conversion member 31 and the guide plate 38 are also shown. The conversion member 31 and the guide plate 38 were omitted in FIG. 1 in order to show only the main configuration of the radiation panel 10. For the sake of convenience, the distribution duct 51 is also shown in FIGS. 6(A) and 6(B), but in the present embodiment, the distribution duct 51 is not a component of the radiation panel 10 and is typically installed by facility construction. However, the distribution duct 51 may be a component of the radiation panel 10. The conversion member 31 is a member that changes the flow direction of the temperature-controlled air A flowing out from the outlet 29 through the gas flow path R to a direction flowing along the outer surface plate 12 of the gas flow path R, and corresponds to a direction conversion member. In the present embodiment, since the outlets 29 are formed at both ends in the axial direction X of the flow path forming member 19, two conversion members 31 are provided. The guide plate 38 is a member that changes the flow direction of the temperature-controlled air A that has been changed in direction by the conversion member 31 and flows along the surface plate 12 to a direction away from the surface plate 12, and corresponds to an air flow guide plate. In the present embodiment, one guide plate 38 is provided at the central position in the axial direction X of the outer surface plate 12 of the gas flow path R. The distribution duct 51 distributes the temperature-controlled air A to each gas flow path R of the flow path forming member 19 through the inlet 18. In the present embodiment, one distribution duct 51 is provided on the opposing plate 16 so as to cover the entire inlet 18.

[0036] FIG. 7 is a perspective view of the conversion member 31. The conversion member 31 has a bottom plate 32, side plates 33, a mounting plate 34, and a cover 35. The bottom plate 32 is a member formed by bending an elongated rectangular thin plate-like member. The bottom plate 32 is formed by bending the shorter sides of the rectangular state before bending into an arc shape. The length of the bottom plate 32 in the longitudinal direction is the same as the length in the width direction of the flow path forming member 19. The side plates 33 are attached to the curved short sides of the bottom plate 32. A total of two side plates 33 are attached to both ends of the bottom plate 32 in the longitudinal direction. The side plates 33 are formed by a thin plate-like member in a fan shape. The arc of the fan shape of the side plate 33 has the same curvature as the curvature of the bottom plate 32. That is, the arc of the fan shape of the side plate 33 affects the state (such as the flow velocity and flow direction) of the temperature-controlled air A flowing along the surface plate 12. The central angle of the fan shape of the side plate 33 is preferably 120 degrees to 150 degrees, more preferably 130 degrees to 140 degrees, and is about 135 degrees in the present embodiment. The mounting plate 34 is an elongated rectangular thin plate-like member, and both ends in the longitudinal direction are fixed to the side plates 33 attached to both ends of the bottom plate 32 in the longitudinal direction. The short side of the elongated rectangle of the mounting plate 34 is attached along one of the two radii of the fan shape of the side plate 33. Further, the mounting plate 34 is provided at a position away from the bottom plate 32. An opening 36 is formed on one side in the direction orthogonal to the longitudinal direction with respect to the mounting plate 34, and a discharge port 37 is formed on the other side. The discharge port 37 has a width (distance in the direction orthogonal to the longitudinal direction) larger than the radius of the fan shape of the side plate 33. The width of the opening 36 is narrower than that of the discharge port 37. The mounting plate 34 comes into contact with the surface plate 12 when the conversion member 31 is attached to the flow path forming member 19. At this time, the sides of the surface plate 12 that form the boundary with the outlet 29 are aligned with the long side of the mounting plate 34 on the opening 36 side. The cover 35 is a member that covers the outlet 29 of the flow path forming member 19 when the conversion member 31 is attached to the flow path forming member 19. The cover 35 has a shape in which two adjacent side surfaces are removed from an elongated rectangular parallelepiped having a length corresponding to the longitudinal direction of the bottom plate 32.Of the two side surfaces removed from the elongated rectangular parallelepiped, one side surface faces the mounting plate 34 and the opening 36, and the other side surface faces the side (the center side of the sector of the side plate 33) that receives the flow path forming member 19, and is attached to the bottom plate 32 and the side plate 33. Both end faces of the elongated rectangular parallelepiped of the cover 35 are flush with both side plates 33.

[0037] FIG. 8 is a perspective view of the guide plate 38. In the present embodiment, the guide plate 38 is configured by combining two composite plates 39. One composite plate 39 is formed by bending a thin plate-like member as follows. In a side view (a state of viewing the surface where the thickness of the thin plate-like member appears), the composite plate 39 is linear up to about half of its length, and the remaining about half is curved in a quarter-arc shape, and a short linear portion is formed at the tip of the arc shape. In other words, in a side view, the composite plate 39 has a relatively long (about half of the total length) linear portion continuing at one end of the quarter-arc, and a short linear portion continuing at the other end. The short linear portion is provided for surface contact with the surface plate 12, and may be about 5 mm to 20 mm, or may be about 10 mm to 15 mm. The depth of the composite plate 39 is the same as the width of the surface plate 12 (the length in the direction orthogonal to the axial direction X). The guide plate 38 is configured by bringing the two relatively long linear portions of the two composite plates 39 into surface contact with each other. At this time, the two composite plates 39 are arranged such that the quarter-arc portions of each composite plate 39 are back-to-back and move away from each other.

[0038] FIG. 9 is a perspective view of the distribution duct 51. In the present embodiment, the distribution duct 51 has an elongated rectangular parallelepiped main body 52 and an introduction portion 56 that guides the temperature-controlled air A to the main body 52. The length of the main body 52 in the longitudinal direction is the same as the width of the opposing plate 16 (the length in the direction orthogonal to the axial direction X). With respect to the main body 52, hereinafter, the four surfaces having sides of the same length as the width of the opposing plate 16 may be referred to as side surfaces, and the two surfaces intersecting the four side surfaces may be referred to as end surfaces. One of the four side surfaces of the main body 52 is formed with a supply port 53, and the introduction portion 56 is attached to the side surface opposite to the surface on which the supply port 53 is formed. Two supply ports 53 are formed on the side surface with the same shape and size. Each of the supply ports 53 is formed as a rectangle slightly smaller than an elongated rectangle obtained by virtually bisecting the side surface in the short side direction. The long sides of the two supply ports 53 are adjacent to each other. The longitudinal size of the supply port 53 is such that it can encompass the plurality of inlets 18 formed in the flow path forming member 19. Inside the main body 52, a baffle plate 54 is provided. The baffle plate 54 is shorter in the long side direction and has the same length in the short side direction as compared with the side surface on which the supply port 53 is formed. Typically, the baffle plate 54 is attached to the main body 52 in a direction parallel to the side surface on which the supply port 53 is formed at positions away from the main body 52 at both ends in the longitudinal direction, in the middle between the side surface on which the supply port 53 is formed and the side surface to which the introduction portion 56 is attached. Communication ports 55 are formed between the baffle plate 54 and the main body 52 at both ends in the longitudinal direction. The communication port 55 is an opening through which the temperature-controlled air A can pass. The introduction portion 56 is provided in the middle of the longitudinal direction of the side surface. In the present embodiment, the introduction portion 56 is composed of a short round duct. The side surface of the main body 52 to which the round duct of the introduction portion 56 is attached has an opening in the inner portion of the round duct. Thus, the temperature-controlled air A can enter the main body 52 from the introduction portion 56. In the distribution duct 51 configured as described above, the temperature-controlled air A introduced from the introduction portion 56 into the main body 52 collides with the baffle plate 54 and flows toward both ends in the longitudinal direction, enters the main body 52 on the side of the supply port 53 through the communication port 55, and then flows out from the supply port 53.The distribution duct 51 has communication ports 55 formed at both longitudinal ends of the baffle plate 54, so that the inside of the main body 52 functions like a loop duct, and the temperature-controlled air A flowing out from the supply port 53 can be made to have a nearly uniform pressure at any location.

[0039] Next, referring to FIG. 10, a radiant heating and cooling system 100 including the radiant panel 10 described so far will be described. FIG. 10 is a schematic system diagram of the radiant heating and cooling system 100. The radiant heating and cooling system 100 includes, in addition to the radiant panel 10, an air conditioner 40 and a supply duct 45. The radiant heating and cooling system 100 can be installed in a building, a vehicle, or the like. In the following description, it is assumed that the radiant heating and cooling system 100 is applied to a building.

[0040] The air conditioner 40 is a device that adjusts the temperature of the temperature-controlled air A and corresponds to a temperature control device. The air conditioner 40 has a coil 41 and a fan 42. The coil 41 cools or heats the temperature-controlled air A introduced into the air conditioner 40. The coil 41 has a tube through which chilled water or warm water whose temperature is adjusted by a heat source machine (not shown) flows inside. A large number of fins are provided on the tube of the coil 41. The coil 41 is configured to allow the temperature-controlled air A to pass between a large number of fins and transfer the heat of the chilled water or warm water to the temperature-controlled air A by performing heat exchange between the chilled water or warm water and the temperature-controlled air A. The fan 42 pumps the temperature-controlled air A whose temperature has been adjusted by the coil 41 toward the radiant panel 10. Note that the air conditioner 40 only needs to be able to adjust the temperature of the temperature-controlled air A and does not need to have a configuration for adjusting the humidity of the temperature-controlled air A. However, when there is a possibility that moisture contained in the temperature-controlled air A supplied from the air conditioner 40 may condense, it is preferable for the air conditioner 40 to have a configuration for adjusting the humidity of the temperature-controlled air A in order to prevent condensation.

[0041] The supply duct 45 guides the temperature-controlled air A whose temperature is adjusted by the air conditioner 40 to the distribution duct 51. One end of the supply duct 45 is connected to the discharge side of the air conditioner 40, and the other end is connected to the introduction part 56 of the distribution duct 51. The supply duct 45 may use a square duct or a spiral duct, and its size may be appropriately determined in consideration of the designed air volume of the temperature-controlled air A. The supply duct 45 is typically wrapped with a heat-insulating material. However, if the outer surface of the intake duct does not become lower than the dew point temperature of the surrounding environment, the construction of the heat-insulating material may be omitted. In this embodiment, a suction duct 46 is connected to the suction side of the air conditioner 40. The suction duct 46 is a duct for taking into the air conditioner 40 the air that becomes the temperature-controlled air A in the air conditioner 40. The end of the suction duct 46 opposite to the end connected to the air conditioner 40 may open to the heating and cooling target space so as to take in the air in the heating and cooling target space, or may be connected to a gallery (not shown) provided on the outer wall so as to take in all outside air. When the other end of the suction duct 46 opens to the heating and cooling target space, an outside air duct may be separately provided so that outside air can be taken into the air conditioner 40 at a predetermined ratio. The suction duct 46 may also use a square duct or a spiral duct, and its size can also be appropriately determined.

[0042] Continuing to refer to FIGS. 1 to 10, the operation of the radiant heating and cooling system 100 will be described. The operation of the radiant panel 10 will be described as part of the operation of the radiant heating and cooling system 100. When operating the radiant heating and cooling system 100, first, the air conditioner 40 is started. Then, air is introduced into the air conditioner 40 through the suction duct 46. When the air introduced into the air conditioner 40 passes through the coil 41, it is cooled during cooling and warmed during heating, becoming temperature-controlled conditioned air A. The conditioned air A whose temperature has been adjusted by passing through the coil 41 is discharged from the air conditioner 40 by the fan 42. The conditioned air A discharged from the air conditioner 40 reaches the distribution duct 51 after flowing through the supply duct 45. The conditioned air A that reaches the distribution duct 51 (see FIG. 9) flows into the inside of the distribution duct 51 from the introduction part 56. The conditioned air A that has flowed into the distribution duct 51 from the introduction part 56 collides with the baffle plate 54 and is divided into two flows and flows along the baffle plate 54 toward the communication ports 55 at both longitudinal ends. The conditioned air A that reaches the communication port 55 enters the opposite main body part 52 through the communication port 55 and flows out of the distribution duct 51 through the supply port 53. The conditioned air A that has flowed out of the supply port 53 flows into each gas flow path R (see FIG. 4(A)) inside the flow path forming member 19 from the inlet 18 formed in the opposing plate 16 (see FIG. 6(B)).

[0043] The temperature-controlled air A flowing into each gas flow path R flows through the gas flow path R toward the outlet 29. The direction in which the temperature-controlled air A in the gas flow path R flows from the inlet 18 toward the outlet 29 is referred to as the "flow direction". The flow direction is parallel to the axial direction X. When the temperature-controlled air A flows through the gas flow path R in the flow direction, it transfers the cold or heat it holds to the surface plate 12, the first side plate 13, and the second side plate 17 through the portions in contact with them. Also, when the temperature-controlled air A flows through the gas flow path R in the flow direction, it encounters the restricting member 22 (see Fig. 5(C)). The temperature-controlled air A that reaches the restricting member 22 is blocked from going to the closing plate 23 and mainly gathers in the gap 26. At this time, since the closing plate 23 is inclined so as to be positioned more downstream in the flow direction as it approaches the side of the gap 26, the pressure loss when the temperature-controlled air A hits the closing plate 23 is reduced. When the temperature-controlled air A passes through the gap 26, the flow velocity increases because the cross-sectional area of the flow path decreases. The flow velocity of the temperature-controlled air A when passing through the gap 26 is generally 3 m / s to 5 m / s. By passing through the gap 26 at a speed of generally 3 m / s to 5 m / s, the velocity boundary layer existing along the surface plate 12 is removed, and the cold or heat held by the temperature-controlled air A is efficiently transferred to the surface plate 12. Also, since the gap 26 is ensured to have a certain length (about 35 mm to 40 mm in the axial direction X by the parallel plates 24), the flow of the temperature-controlled air A flowing through the gap 26 can be stabilized. Note that on the downstream side of the parallel plates 24, there is a possibility that the temperature-controlled air A that has passed through the gap 26 flows around to the back side of the parallel plates 24 and vortices are generated. However, in this embodiment, since the through hole 25 is formed in the closing plate 23, the differential pressure between the front and back surfaces of the restricting member 22 can be reduced, and the generation of vortices can be suppressed. The temperature-controlled air A flowing through the gas flow path R encounters a plurality of restricting members 22 from the inlet 18 to the outlet 29, and each time it acts as described above, it can efficiently transfer the cold or heat held by the temperature-controlled air A to a wide area of the surface plate 12. The surface plate 12 is cooled during cooling and warmed during heating by heat transfer from the temperature-controlled air A and heat conduction from the first side plate 13 and the second side plate 17.

[0044] The surface plate 12 cooled or heated by heat transfer from the temperature-controlled air A radiates cold or warm heat from its surface to cool or heat the air-conditioning target space facing the surface plate 12. During cooling, the heat of the objects existing in the air-conditioning target space is absorbed by the surface plate 12 to obtain a cooling feeling. However, in this specification, for the sake of convenience, it is expressed that cold heat is radiated from the surface plate 12. In the radiation air-conditioning system 100, since the heat medium that cools or heats the surface plate 12 is the temperature-controlled air A, the occurrence of condensation can be suppressed and water leakage can be avoided compared with the case where cold water or hot water is used as the heat medium. If radiation cooling is performed with cold water as the heat medium, it is conceivable to set the temperature of the cold water to 23°C or higher (a temperature higher than the dew point) in order to prevent condensation on the radiation surface. However, when cold water at a constant temperature of 23°C is flowed, it becomes difficult to quickly follow when there is a load fluctuation. In this regard, in the radiation air-conditioning system 100 according to the present embodiment, since the heat medium is the temperature-controlled air A, it is excellent in followability during load fluctuations.

[0045] The temperature-controlled air A that has flowed through each gas flow path R and reached the outlet 29 exits from the flow path forming member 19 through the outlet 29 and flows into the conversion member 31 (see Fig. 6(B)). The temperature-controlled air A that has flowed into the conversion member 31 flows along the inner arc of the bottom plate 32, changes its direction, and flows out of the conversion member 31 through the discharge port 37. The temperature-controlled air A that has flowed out of the conversion member 31 flows along the outer side of the surface plate 12 (outside the gas flow path R), along the surface plate 12 (while maintaining the vicinity of the surface plate 12), in the direction opposite to the direction in which the temperature-controlled air A flowing through the gas flow path R flows. The temperature-controlled air A flowing along the outer side of the surface plate 12 along the surface plate 12 flows along each composite plate 39 when it reaches the guide plate 38. As a result, the temperature-controlled air A changes its direction and flows away from the surface plate 12, diffuses into the space to be air-conditioned, and contributes to the cooling or heating of the space to be air-conditioned by convection. In the present embodiment, the temperature-controlled air A diffused into the space to be air-conditioned flows out of the space to be air-conditioned through a door gallery (not shown), a ventilation port (not shown), etc., and diffuses into the surrounding environment. In the present embodiment, since the temperature-controlled air A used for air-conditioning is not directly returned to the air conditioner 40, the air corresponding to the amount diffused into the surrounding environment is separately introduced into the air conditioner 40 through the suction duct 46, and thereafter, the above-described operation is repeated.

[0046] As described above, according to the radiation panel 10 according to the present embodiment, the flow velocity of the temperature-controlled air A flowing in the gas flow path R in the flowing direction increases when it hits the restricting member 22 and passes through the gap 26. As a result, the velocity boundary layer near the surface plate 12 can be removed, and the cold heat or warm heat possessed by the temperature-controlled air A can be efficiently transmitted to the surface plate 12. Further, according to the radiation air-conditioning system 100 according to the present embodiment, since the above-described radiation panel 10 is provided, heat radiation is performed from the surface plate 12, so that the space to be air-conditioned can be efficiently cooled or heated.

[0047] In the above description, the radiation panel 10 has been described as being installed on the ceiling of a building. However, instead of installing it on the ceiling, or in addition to installing it on the ceiling, it may be installed on the floor surface or wall surface. Further, the radiation panel 10 may be installed not only in a building but also on the ceiling and / or floor surface and / or wall surface of a space where people stay, including vehicles (such as buses, passenger cars, trains, etc.).

[0048] In the above description, it has been assumed that the first lid 11 and the second lid 15 are each formed into a folded-back structure by bending a single thin plate-like member. However, they may be composed of a plurality of members. For example, the first lid 11 may be formed by welding a separate first side plate 13 and small protrusions 14 to a surface plate 12 made of a single rectangular plate-like member. The same applies to the second lid 15. However, by forming the first lid 11 and / or the second lid 15 into a folded-back structure, the load-bearing capacity can be improved, which is particularly useful when the radiation panel 10 is installed on the floor surface. Further, by forming the first lid 11 and / or the second lid 15 into a folded-back structure, particularly when the radiation panel 10 is installed in a vehicle, the flow path forming member 19 can be given the role of a structure.

[0049] In the above description, it has been assumed that the first side plate 13 and the second side plate 17 are shared as partition plates between adjacent gas flow paths R. However, it is also possible to arrange a plurality of gas flow paths R by each gas flow path R having its own partition plate and closely contacting these partition plates with each other.

[0050] In the above description, it has been assumed that the radiation panel 10 includes a direction conversion member (conversion member 31) and an air flow guide plate (guide plate 38). However, depending on the situation, both or one of them may be omitted. For example, when the radiation panel 10 is installed on the floor surface, both the direction conversion member and the air flow guide plate may be omitted.

[0051] In the above description, it has been assumed that the distribution duct 51 is provided with an introduction part 56 at the longitudinal center part and a baffle plate 54 is provided in the main body part 52. However, the number and arrangement of the introduction parts 56 and the presence or absence of the baffle plate 54 can be appropriately changed.

[0052] In the above description, the temperature-controlled air A that has passed through the radiation panel 10 is supplied to the space to be air-conditioned and used for convective air conditioning. However, the temperature-controlled air A flowing out from the outlet 29 may be collected without being released into the space to be air-conditioned and returned to the air conditioner 40. In this case, the conversion member 31 and the guide plate 38 may be omitted.

Explanation of Reference Numerals

[0053] 10 Radiation panel 12 Surface plate 13 First side plate 14 Small protrusion 16 Opposing plate 17 Second side plate 19 Flow path forming member 22 Limiting member 23 Closing plate 24 Parallel plate 25 Through hole 26 Gap 29 Outlet 31 Conversion member (direction conversion member) 38 Guide plate (airflow guide plate) 40 Air conditioner (temperature control equipment) 51 Distribution duct 100 Radiation heating and cooling system A Temperature-controlled air R Gas flow path

Claims

1. A flow path forming member having a surface plate for emitting or receiving thermal radiation energy, and an enclosing member that cooperates with the surface plate to form a gas flow path through which gas flows, A restricting member provided in the gas flow path with a gap from the surface plate to restrict the cross-sectional area of the gas flow path, A plurality of the restricting members are provided at predetermined intervals along the direction in which the gas flows inside the gas flow path, The restricting member includes a closing plate that extends in a direction intersecting the surface plate and closes the cross-sectional area of the gas flow path leaving a gap, and a parallel plate that extends along the surface plate from the closing plate in the direction in which the gas flows, The closing plate is formed with through holes through which a predetermined flow rate of the gas can pass, A radiation panel.

2. A direction changing member provided at an outlet where the gas flows out of the gas flow path, having a contour for changing the direction of the gas flow so that the gas flowing out of the outlet flows along the surface plate outside the gas flow path, The radiation panel according to claim 1.

3. A flow path forming member having a surface plate for emitting or receiving thermal radiation energy, and an enclosing member that cooperates with the surface plate to form a gas flow path through which gas flows, A restricting member provided in the gas flow path with a gap from the surface plate to restrict the cross-sectional area of the gas flow path, A plurality of the restricting members are provided at predetermined intervals along the direction in which the gas flows inside the gas flow path, A direction changing member provided at an outlet where the gas flows out of the gas flow path, having a contour for changing the direction of the gas flow so that the gas flowing out of the outlet flows along the surface plate outside the gas flow path, A radiation panel.

4. The restricting member includes a closing plate that extends in a direction intersecting the surface plate and closes the cross-sectional area of the gas flow path leaving a gap, and a parallel plate that extends along the surface plate from the closing plate in the direction in which the gas flows, The radiation panel according to claim 3.

5. An air flow guiding plate provided on the surface plate outside the gas flow path, having a contour for changing the direction of the gas flow flowing along the surface plate outside the gas flow path in a direction away from the surface plate, The radiation panel according to any one of claims 2 to 4.

6. The gas flow path is formed to be elongated in the flow direction in which the gas flows, The surrounding member has side plates that are connected to the surface plate and extend in the flow direction. A plurality of the flow path forming members are arranged in a direction intersecting the flow direction, sharing the side plates with each other or the side plates being adjacent to each other. The radiation panel according to any one of claims 1 to 5.

7. The radiation panel according to any one of claims 1 to 6, temperature control equipment for adjusting the temperature of the gas, and a distribution duct for guiding the gas whose temperature has been adjusted by the temperature control equipment to the gas flow path. A radiation heating and cooling system.

Images