WO2023017847A1 - Radiation panel and radiation heating/cooling system - Google Patents

Abstract

The 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 that, in conjunction with the surface plate, forms the gas flow passage. The restriction member is provided in the gas flow passage with a gap to the surface plate, and limits the cross-sectional area of the gas flow passage, and a plurality of the restriction members are provided along the direction in which the gas flows in the interior of the gas flow passage. The radiation panel is able to increase the flow rate of the gas passing through the gap between the surface plate and the restriction members, and promotes the transfer of cold or heat of the gas to the surface plate. The radiation heating/cooling 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.

Description

Radiant panels and radiant cooling and heating systems

The present disclosure relates to a radiant panel and a radiant cooling and heating system, and more particularly to a radiant panel and a radiant cooling and heating system that promote the transfer of heat possessed by gas to heat radiation members.

　In recent years, the use of radiant heating and cooling systems, which use radiant heat for cooling and heating, has been increasing as a cooling and heating system that achieves both energy conservation and comfort. A radiant cooling and heating system cools a member (e.g., ceiling) facing a space to be cooled and heated during cooling and warms during heating, and cools and heats the target space by radiant heat from the cooled or heated member. As a member used in a radiant cooling and heating system, a plurality of channels for flowing temperature-controlled air are provided on the back side of the surface plate facing the target space, and the heat of the air flowing through these channels is transferred to the surface plate. There is a partition panel that radiates cold or hot heat from the outside (see, for example, Japanese Patent Application Laid-Open No. 2011-252375).

With radiation-based cooling and heating, if more of the cold or warm heat possessed by the gas can be transmitted to the member that radiates cold or hot heat, it will be possible to perform cooling and heating more effectively, which will also contribute to energy conservation.

In view of the above-mentioned problems, the present disclosure relates to providing a radiant panel and a radiant cooling and heating system that promote the transfer of cold or hot heat possessed by gas to members that radiate cold or hot heat.

A radiation panel according to a first aspect of the present disclosure includes a surface plate that emits or injects thermal radiation energy, and a surrounding member that cooperates with the surface plate to form a gas flow path through which gas flows. and a limiting member provided in the gas flow path with a gap between the surface plate and limiting a cross-sectional area of the gas flow path, wherein the limiting member is the gas flow path. are provided at predetermined intervals along the direction in which the gas flows.

With this configuration, it is possible to increase the flow velocity of the gas passing through the gap between the surface plate and the restricting member, and to promote the transmission of the cold or hot heat possessed by the gas to the surface plate.

Further, as a radiation panel according to a second aspect of the present disclosure, in the radiation panel according to the first aspect of the present disclosure, the limiting member extends in a direction intersecting the surface plate and leaves the gap. It may include a blocking plate that blocks the cross-sectional area of the gas flow channel, and parallel plates that extend along the surface plate in a direction in which the gas flows from the blocking plate.

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

Further, as a radiation panel according to a third aspect of the present disclosure, in the radiation panel according to the second aspect of the present disclosure, the blocking plate is formed with a passage hole through which the gas at a predetermined flow rate can pass. may

With this configuration, the pressure difference between the upstream side and the downstream side across the restricting member can be reduced, and the occurrence of gas vortices near the ends of the parallel plates can be suppressed.

Further, as a radiation panel according to a 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 flows through the gas flow path The surrounding member is elongated in the flow direction, and the surrounding member has a side plate connected to the surface plate and extending in the flow direction, and a plurality of the flow path forming members share the side plates. The side plates may be arranged side by side or adjacent to each other in a direction crossing the flow direction.

With this configuration, it is possible to increase the area of the surface plate that efficiently transfers the cold or hot heat possessed by the gas.

Further, as a radiation panel according to a fifth aspect of the present disclosure, in the radiation panel according to any one of the first to fourth aspects of the present disclosure, the gas flows out from the gas flow path. A direction changing member provided at the outlet and having a profile for changing the flow direction of the gas so that the gas flowing out from the outlet flows along the surface plate outside the gas flow path. good too.

With this configuration, cold heat or heat remaining in the gas after passing through the gas flow channel can be transmitted from the outside of the gas flow channel to the surface plate.

Further, as a radiation panel according to a sixth aspect of the present disclosure, in the radiation panel according to the fifth aspect of the present disclosure, provided on the surface plate outside the gas flow channel, An air flow guide plate may be provided that has a contour that changes the direction of the flow of the gas that has flowed along the surface plate to a direction away from the surface plate.

With this configuration, gas can be forced to convect from the surface plate toward the space where cold or warm heat is radiated, and cooling or heating of the space can be assisted.

Further, a radiation cooling and heating system according to a seventh aspect of the present disclosure includes a radiation panel according to any one of the first to sixth aspects of the present disclosure, and a temperature control for adjusting the temperature of the gas and a distribution duct that guides the gas temperature-controlled by the temperature control device to the gas flow path.

With this configuration, cooling or heating can be performed by transferring the cold or hot heat possessed by the gas to the surface plate and radiating heat from the surface plate.

According to the present disclosure, it is possible to increase the flow velocity of the gas passing through the gap between the surface plate and the restricting member, and it is possible to promote the transfer of cold or heat possessed by the gas to the surface plate.

1 is an exploded perspective view of a radiation panel according to an embodiment of the present disclosure; FIG. (A) is a perspective view of a first lid that constitutes a radiation panel according to an embodiment of the present disclosure, and (B) is a partial front view of the first lid. (A) is a perspective view of a second lid that constitutes the radiation panel according to the embodiment of the present disclosure, and (B) is a partial front view of the second lid. (A) is a partial perspective view of a flow path forming member constituting a radiation panel according to an embodiment of the present disclosure, and (B) is a partial front view of the flow path forming member. (A) is a partial perspective view of a heat transfer enhancing element that constitutes a radiation panel according to an embodiment of the present disclosure, (B) is a perspective view of a limiting member that the heat transfer enhancing element has, and (C) is a heat transfer enhancing element. is a partial side cross-sectional view of the flow path forming member to which is attached. (A) is a perspective view of a radiation panel according to an embodiment of the present disclosure, and (B) is a side view of the radiation panel. FIG. 4 is a perspective view of a conversion member included in the radiation panel according to the embodiment of the present disclosure; 4 is a perspective view of a guide plate included in the radiation panel according to the embodiment of the present disclosure; FIG. FIG. 2 is a perspective view of a distribution duct attached to a radiant panel according to an embodiment of the present disclosure; 1 is a schematic system diagram of a radiation cooling/heating system according to an embodiment of the present disclosure; FIG.

This application is based on Japanese Patent Application No. 2021-131230 filed on August 11, 2021 in Japan, the content of which forms part of the present application.
Also, the present invention will be more fully understood from the detailed description that follows. Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. However, the detailed description and specific examples are of preferred embodiments of the invention and are given for purposes of illustration only. Various alterations and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
Applicant does not intend to offer to the public any of the described embodiments, and any modifications, alternatives disclosed that may not literally fall within the scope of the claims are equally valid. be part of the invention under discussion.

Embodiments will be described below with reference to the drawings. In each figure, the same or similar members are denoted by the same or similar reference numerals, and redundant explanations are omitted.

First, a radiation panel 10 according to one embodiment will be described with reference to FIG. FIG. 1 is an exploded perspective view of the radiation panel 10. FIG. The radiation panel 10 passes temperature-controlled air (hereinafter referred to as “temperature-controlled air A”) inside and radiates cold or hot heat from the cooled or heated radiation panel 10, thereby cooling and heating the surroundings. It is for doing Here, when the radiation panel 10 is cooled to radiate cold heat, the radiation panel 10, which has a lower temperature than the surroundings, absorbs heat from the surroundings to provide a cool feeling. is expressed as radiating. Also, "cooling/heating" refers to either cooling or heating depending on the situation. The cooling and heating radiant panel 10 is typically capable of both cooling and heating. In this embodiment, the radiation panel 10 will be described as being installed on the ceiling of a building (factory, multipurpose hall, office, etc.). The radiation panel 10 includes a first lid 11, a second lid 15, and a heat transfer enhancement element 20 as main constituent members. Hereinafter, the configuration of the radiation panel 10 will be described with reference to FIG. 1 as appropriate.

FIG. 2(A) is a perspective view of the first lid 11, and FIG. 2(B) is a partial front view of the first lid 11. The first lid 11 is a member that constitutes about half of the exterior of the radiation panel 10 . The first lid 11 is formed by folding a thin plate member. The first lid 11 is typically made of a steel plate, but may be made of another metal plate or another material (material other than metal) that is highly formable and has excellent heat transfer properties due to heat radiation. good too. Further, the material forming the first lid 11 may be subjected to surface treatment such as zinc plating. The first lid 11 has a first side plate 13 and a small protrusion 14 formed by folding a thin plate member. The first side plate 13 is formed in the following manner in this embodiment. First, the thin plate-like member is bent at 90 degrees and then folded back 180 degrees at a predetermined length from the bent position. Then, it is bent 90 degrees to the side opposite to the side where the thin plate-like member exists at the position where it was bent 90 degrees. Since the folding process is performed in this manner, the first side plate 13 in this embodiment is in a state in which two thin plate-like members are overlapped. The small protrusion 14 is shorter in height than the first side plate 13 and is formed by the same folding process as the first side plate 13 . A plurality of first side plates 13 and small protrusions 14 are formed on the first lid 11, and the first side plates 13 and small protrusions 14 are formed alternately. The first side plate 13 and the small protrusions 14 extend parallel to each other along the direction in which the bending lines of the thin plate member extend. The surface of the first lid 11 on the side opposite to the side where the first side plate 13 and the small projection 14 protrude is flush. The portion of the surface of the first lid 11 that is flush with the surface is called a surface plate 12 . In the present embodiment, the surface plate 12, the first side plate 13, and the small projections 14 are integrally formed by the folding process described above. The surface plate 12 is capable of emitting (at the time of heating) or injecting (at the time of cooling) thermal radiation energy.

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, reference will be made to FIG. 2 as appropriate. The second lid 15 is a member that constitutes about the remaining half of the exterior of the radiation panel 10 . The second lid 15 is formed by folding a thin plate member. The second lid 15 is typically made of the same material as the first lid 11 , but may be made of a material different from the first lid 11 . The second lid 15 can employ a material that can be used for the first lid 11 . The second lid 15 has a second side plate 17 formed by folding a thin plate member. The second lid 15 does not have the same structure as the small protrusion 14 in the first lid 11 . In the present 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 of the second side plates 17 extends parallel to the direction in which the bending lines of the thin plate member extend. The interval between adjacent second side plates 17 is the same as the interval between adjacent first side plates 13 in first lid 11 (in other words, twice the interval between first side plate 13 and small projection 14). ing. The surface 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 with the surface is called a counter plate 16 . In the present embodiment, the facing plate 16 and the second side plate 17 are integrally formed by folding back the thin plate member. In this embodiment, an inlet 18 is formed in the opposing plate 16 . The inflow port 18 is an opening through which gas (temperature-controlled air A) passes. Inflow port 18 is formed in the center of opposing plate 16 in the direction in which second side plate 17 extends in the present embodiment. In addition, one inflow port 18 is formed for each interval between adjacent second side plates 17 . Therefore, the number of inlets 18 equal to the number obtained by subtracting one from the number of second side plates 17 is formed.

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. As shown in FIG. The first lid 11 and the second lid 15 are combined so that the first side plate 13 and the second side plate 17 are sandwiched between the surface plate 12 and the opposing plate 16 . At this time, each second side plate 17 is 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 manner, a plurality of spaces partitioned by the first side plate 13 and the second side plate 17 are formed between the surface plate 12 and the opposing plate 16. The Rukoto. The space surrounded by the surface plate 12, the first side plate 13, the opposing plate 16, and the second side plate 17 serves as a gas flow path R through which the temperature-controlled air A, which is one form of gas, flows. . Therefore, the first side plate 13 , the second side plate 17 , and the portions of the surface plate 12 and the opposing plate 16 between the first side plate 13 and the second side plate 17 are the flow path forming member 19 constitutes Also, portions of the flow path forming member 19 other than the surface plate 12 (the first side plate 13, the small projections 14, the opposing plate 16, and the second side plate 17) correspond to the surrounding member. In this 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 elongated in a direction along which a bending line extends when the thin plate member is bent when the first lid 11 and the second lid 15 are formed. 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. As shown in FIG. Regarding the gas flow path R, the distance in the axial direction X is defined as the "length", the distance in the direction perpendicular to the axial direction X and parallel to the surface plate 12 is defined as the "width", and the axial direction X and the surface plate 12 are orthogonal to each other. The distance in the direction to do is sometimes called "height". Using these terms to express the gas flow passages R, it can be said that a plurality of gas flow passages R elongated in the axial direction X are arranged in the width direction in the radiation panel 10 . The predetermined lengths of the first side plate 13 and the second side plate 17 may be determined so as to be the height of the gas flow path R. Moreover, it can be expressed that one inlet 18 is formed in the center of the axial direction X across the two gas flow paths R.

In each gas channel R, the first side plate 13 and the second side plate 17 function as partition plates that partition adjacent gas channels R. In the present embodiment, the gas flow paths R excluding 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 partition plates with the adjacent gas flow paths R. Since the first side plate 13 is formed integrally with the surface plate 12 in this embodiment, it can be said that the first side plate 13 is connected to the surface plate 12 . Further, the second side plate 17 is formed separately from the surface plate 12 in the present embodiment, but since it is in contact with the surface plate 12 , it can be said that it is connected to the surface plate 12 . In this way, being connected to the surface plate 12 includes being integrally formed as well as being in contact with separate objects. Therefore, the first side plate 13 and the second side plate 17 functioning as partition plates correspond to side plates. In this embodiment, the gas flow path R has a rectangular cross section perpendicular to the axial direction X. As shown in FIG. The size of the radiation panel 10 and the gas flow path R therein can be appropriately determined according to the place where the radiation panel 10 is installed and the application. The gas flow path R is typically configured such that the ratio of length to width (length/width) is 5 or more, and may be about 10 or 20, or about 30 to 85. In the form of , it is approximately 40 to 45.

Each gas flow path R has an inlet 18 formed in the center in the axial direction X as described above, and an outlet 29 formed at both ends in the axial direction X. The inflow port 18 is an opening through which the temperature-controlled air A flows into the gas flow path R. As shown in FIG. The outflow port 29 is an opening through which the temperature-controlled air A flows out from the gas flow path R. As shown in FIG. In the present embodiment, the outflow port 29 is formed by opening both ends in the axial direction X of the combined first lid 11 and second lid 15 without being blocked. For each gas channel R, an inlet 18 is formed in the center in the axial direction X, and outlets 29 are formed at both ends in the axial direction X. In configuration, they are separated by half the length of the first lid 11 (second lid 15).

5A is a partial perspective view of the heat transfer enhancing element 20, FIG. 5B is a perspective view of the restricting member 22 of the heat transfer enhancing element 20, and FIG. 3 is a partial side cross-sectional view of the flow path forming member 19. FIG. The heat transfer enhancing element 20 (hereinafter simply referred to as “the element 20”) is attached to the gas flow path R. As shown in FIG. In FIG. 1, the elements 20 are arranged by the number of gas flow paths R formed by the first lid 11 and the second lid 15 (one gas flow path R from the inlet 18 to one outlet 29). is shown. FIG. 5A shows a state in which a plurality of elements 20 are installed in each gas flow path R and the flow path forming member 19 is hidden. The element 20 has a pedestal 21 and a limiting member 22 . The pedestal 21 is a member for positioning the plurality of restricting members 22 in a predetermined positional relationship. The pedestal 21 is formed by processing a thin plate member into the size of the opposing plate 16 in one gas flow path R. As shown in FIG. That is, the pedestal 21 has a dimension corresponding to the distance between the first side plate 13 of the first lid 11 and the small protrusion 14 in the width direction, and a distance between the inlet 18 and the outlet 29 in the length direction. It is formed in a dimension corresponding to The pedestal 21 is installed on the opposing plate 16 when the element 20 is attached to the gas flow path R. As shown in FIG. Hereinafter, when referring to the relationship between the first lid 11, the second lid 15, and the gas flow path R for the element 20 including the pedestal 21 and the restricting member 22, unless otherwise specified, the element 20 is attached to the gas flow path R. Various materials such as resin and metal can be used for the pedestal 21, but in the present embodiment, a material with excellent heat insulation is used in order to suppress heat transfer to the opposing plate 16, which is not a radiation surface. is preferred.

The limiting member 22 is a member that limits the channel area (cross-sectional area of the gas channel R) through which the temperature-controlled air A flowing through the gas channel R in the axial direction X can pass. The restricting member 22 has a blocking plate 23 and a parallel plate 24 . The blocking plate 23 is a thin plate-like member, and is a main member of the limiting member 22 that substantially blocks the cross section of the gas flow path R intersecting the axial direction X. As shown in FIG. The blocking 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 . The closing plate 23 is inclined so that the surface plate 12 side is positioned downstream in the flow direction of the temperature-controlled air A rather than the pedestal 21 side when viewed in the height direction. 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". The flow direction is parallel to the axial direction X in this embodiment. The blocking plate 23 is preferably inclined so 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, the angle is approximately 60 degrees. are doing. The closing plate 23 is ideally sized to contact the first side plate 13 and the second side plate 17 on both sides in the width direction. However, considering workability (easiness of assembly) when attaching the element 20 to the second lid 15 and matching the first lid 11 thereto, the closure plate 23 is A gap as small as possible may be formed between it and the face plate 17 .

The parallel plate 24 is composed of a thin plate-like member and extends downstream in the flow direction from the end of the closing plate 23 on the surface plate 12 side. The parallel plates 24 are typically made of the same material as the closing plate 23 . Typically, one sheet of thin plate-like member is bent so that the closing plate 23 and the parallel plate 24 can be distinguished from each other along the bending line. In other words, although the restricting member 22 is divided into a blocking plate 23 and a parallel plate for convenience of explanation, the blocking plate 23 and the parallel plate are typically integrally formed. However, the blocking plate 23 and the parallel plate 24 may be composed of members separated from each other and joined together afterwards. The parallel plate 24 extends parallel to the surface plate 12 in this embodiment. 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 serves to increase the flow velocity of the temperature-controlled air A passing through. The flow velocity of the temperature-controlled air A passing through the gap 26 is preferably approximately 3 m/s to 5 m/s, and may be approximately 7 m/s. The size of the gap 26 may be determined from the viewpoint of giving such a flow velocity to the temperature-controlled air A, and may be, for example, about 5 mm to 10 mm, or about 7 mm to 8 mm. The length of the parallel plate 24 in the axial direction X is approximately 35 mm to 40 mm in this embodiment.

A passage hole 25 through which the temperature-controlled air A can pass is formed in the blocking plate 23 . The passage hole 25 reduces the differential pressure between the front and back surfaces of the restricting member 22 in order to suppress the occurrence of vortices of the temperature-controlled air A that flow around the back side of the parallel plate 24 on the downstream side of the parallel plate 24 in the flow direction. play a role. In this embodiment, the passage hole 25 is formed at the center of the closing plate 23 in the width direction and at a position closer to the pedestal 21 than the center in the height direction, but the position is not limited to this position. . For example, the passage hole 25 may be formed so as to be in contact with the pedestal 21 . The passage hole 25 is formed in a size and shape that allows the temperature-controlled air A at a predetermined flow rate to pass through. The predetermined flow rate referred to here is a flow rate that can reduce the differential pressure on both sides of the restricting member 22 to such an extent that a vortex of the temperature-controlled air A does not substantially occur around the downstream portion of the parallel plate 24 in the flow direction. The through hole 25 is formed in a circular shape with a diameter of about 5 mm in this embodiment. In the present embodiment, the diameter of the passage hole 25 is approximately 0.2 times (approximately 1/5) the width of the blocking plate 23 . The size and shape of the passage hole 25 can be changed as appropriate within a range in which the purpose of suppressing the generation of vortices in the temperature-controlled air A on the downstream side of the restricting member 22 in the flow direction can be achieved. be able to. For example, the size of the passage 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 blocking plate 23. The shape of 25 may be an ellipse, or a polygon such as a quadrangle, hexagon, or octagon.

A single element 20 is configured by attaching a plurality of restricting members 22 to a pedestal 21 at predetermined intervals in the axial direction X. At this time, each restriction member 22 attached to the pedestal 21 is arranged so 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 so that the blocking plate 23 is on the side of the inlet 18 and the parallel plate 24 is on the side of the outlet 29 in each restricting member 22 . In other words, the element 20 is arranged such that the blocking plate 23 is positioned upstream in the flow direction of the temperature-controlled air A flowing through the gas flow path R, and the parallel plate 24 is positioned downstream. A predetermined interval between each of the restricting members 22 attached to the pedestal 21 is a gap 26 that allows the flow velocity of the temperature-controlled air A to be approximately 3 m/s to 5 m/s (approximately 7 m/s in some cases). , should be determined from the viewpoint of being able to form as many as possible in the axial direction X. In this embodiment, the predetermined interval between each restricting member 22 is approximately 100 mm. The predetermined interval is the interval between the reference points of each restricting member 22 (for example, the end position of the parallel plate 24 which is the most downstream position in the flow direction).

The radiation panel 10 can be configured by assembling the above-described first lid 11 and second lid 15 and element 20 as follows. First, the second lid 15 is placed on the workbench (workfloor) so that the second side plate 17 is above the opposing plate 16 . Next, the element 20 is attached on the opposing plate 16 between the second side plates 17 . The elements 20 fit in two rows in the width direction and two stages in the length direction bordering on the inflow port 18 for each space between the adjacent second side plates 17, so a total of four elements 20 are attached. . At this time, all of the four elements 20 attached to one space between the adjacent second side plates 17 are arranged so that the parallel plate 24 extending from the closing plate 23 is closer to the outflow port 29 than the closing plate 23 is. Align the direction so that it is positioned (downstream in the flow direction). Also, the two elements 20 arranged side by side in the width direction are brought closer to the adjacent second side plate 17 . A space for receiving the first side plate 13 is formed between the two elements 20 arranged side by side in the width direction by bringing the elements together in this way. When attaching the pedestal 21 of the element 20 to the opposing plate 16 of the second lid 15, welding or adhesion is performed so that the element 20 does not drop even if the opposing plate 16 is turned upside down. Four elements 20 are attached to the entire second lid 15 for each space. Next, the first lid 11 is put on the second lid 15 to which the element 20 is attached. At this time, the first side plate 13 is placed in each space between the two elements 20 adjacent in the width direction, and the first lid 11 is installed so that the small protrusions 14 are in contact with the second side plate 17. - 特許庁When the second lid 15, the element 20, and the first lid 11 are assembled in the manner described above, two gas flow paths R are formed between the first side plate 13 and the second side plate 17 so as to sandwich the inlet 18. One element 20 is provided for each of the two gas flow paths R. In this embodiment, the radiant panel 10 configured in this way is open at both end faces in the axial direction X, and the central portion of the facing plate 16 in the axial direction X is open. Openings on both end faces in the axial direction X of the radiation panel 10 serve as outflow ports 29 . An opening in the center of the opposing plate 16 in the axial direction X serves as an inflow port 18 . From the viewpoint of weight reduction, the material of each member constituting the radiant panel 10 may be a composite material such as aluminum plate or steel plate in the case of metal, and resin in the portion that does not contribute to heat transfer. When the radiation panel 10 is installed on the ceiling of the space to be cooled and heated, the surface plate 12 is installed so that it faces downward (toward the space to be cooled and heated), so that it is upside down from the assembly described above. Moreover, when installing the radiation panel 10 on the ceiling of the space to be cooled and heated, the following members may be added.

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. FIGS. 6A and 6B also show the conversion member 31 and the guide plate 38 . The conversion member 31 and the guide plate 38 are omitted in FIG. 1 to show only the main components of the radiation panel 10 . For the sake of convenience, the distribution duct 51 is also shown in FIGS. 6A and 6B. It can be installed during construction. However, the distribution duct 51 may be a component of the radiant panel 10 . The conversion member 31 is a member that changes the direction of the flow of the temperature-controlled air A flowing through the gas flow path R and exiting from the outlet 29 to the direction of flow along the outer surface plate 12 of the gas flow path R. It corresponds to a conversion member. In this embodiment, since the outlets 29 are formed at both ends of the flow path forming member 19 in the axial direction X, two converting members 31 are provided. The guide plate 38 is a member that changes the flow direction of the temperature-controlled air A flowing along the surface plate 12 after being changed in direction by the conversion member 31 in a direction away from the surface plate 12, and corresponds to an air flow guide plate. do. In the present embodiment, one guide plate 38 is provided at the central position in the axial direction X of the surface plate 12 outside the gas flow path R. As shown in FIG. The distribution duct 51 distributes the temperature-controlled air A to each gas flow path R of the flow path forming member 19 via the inlet 18 . In this embodiment, one distribution duct 51 is provided on the opposing plate 16 so as to cover the entire inlet 18 .

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

FIG. 8 is a perspective view of the guide plate 38. FIG. In this embodiment, the guide plate 38 is constructed by joining two composite plates 39 together. One composite plate 39 is formed by bending a thin plate member as follows. The composite plate 39 is linear up to about half of its length when viewed from the side (viewing the surface where the thickness of the thin plate-like member appears), and the other half is curved into a 1/4 arc shape. A short linear portion is formed at the end of the arc. In other words, the composite plate 39 has a relatively long (approximately half the total length) linear portion at one end of a quarter arc and a short linear portion at the other end when viewed from the side. in the process of. The short linear portion is provided for surface contact with the surface plate 12, and may be about 5 mm to 20 mm, or 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 perpendicular to the axial direction X). The guide plate 38 is constructed by bringing the relatively long linear portions of the two composite plates 39 thus constructed into contact with each other. At this time, the two composite plates 39 are arranged such that the 1/4 circular arc portions of the composite plates 39 face each other and are separated from each other.

9 is a perspective view of the distribution duct 51. FIG. In this embodiment, the distribution duct 51 has an elongated rectangular parallelepiped body portion 52 and an introduction portion 56 that guides the temperature-controlled air A to the body portion 52 . The length in the longitudinal direction of the body portion 52 is the same as the width of the opposing plate 16 (the length in the direction perpendicular to the axial direction X). Regarding the body portion 52, hereinafter, the four surfaces having sides with the same length as the width of the opposing plate 16 may be referred to as side surfaces, and the two surfaces intersecting these four side surfaces may be referred to as end surfaces. The body portion 52 has a supply port 53 formed in one of four side surfaces, and an 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 having the same shape and size are formed on the side surface. Each of the supply ports 53 is formed in a rectangle that is one size smaller than an elongated rectangle obtained by virtually bisecting the side surface in the short side direction. Long sides of the two supply ports 53 are adjacent to each other. The supply port 53 has a longitudinal dimension large enough to accommodate the plurality of inlets 18 formed in the flow path forming member 19 . A baffle plate 54 is provided inside the body portion 52 . The baffle plate 54 is shorter in the long side direction and has the same length in the short side direction than the side surface on which the supply port 53 is formed. The baffle plate 54 is typically attached to the body portion 52 in the following manner. The baffle plate 54 is arranged between the side surface of the body portion 52 on which the supply port 53 is formed and the side surface on which the introduction portion 56 is attached. The baffle plates 54 are arranged at positions apart from the body portion 52 at both ends in the longitudinal direction. Also, the baffle plate 54 is parallel to the side surface of the body portion 52 on which the supply port 53 is formed. A communicating port 55 is formed between the baffle plate 54 and the body portion 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 part 56 is provided in the middle of the side surface in the longitudinal direction. The introduction part 56 is configured by a short round duct in this embodiment. The side surface of the body portion 52 to which the round duct of the introduction portion 56 is attached has an opening inside the round duct. This allows the temperature-controlled air A to enter the body portion 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 portion 52 collides with the baffle plate 54 and flows toward both ends in the longitudinal direction, and passes through the communication port 55. After entering the body portion 52 on the side of the supply port 53 , it flows out from the supply port 53 . In the distribution duct 51 , communication ports 55 are 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 is can be a nearly uniform pressure everywhere.

Next, referring to FIG. 10, a radiation cooling/heating system 100 including the radiation panel 10 described above will be described. FIG. 10 is a schematic system diagram of the radiation cooling/heating system 100. As shown in FIG. The radiation cooling/heating system 100 includes a radiation panel 10 , an air conditioner 40 and an air supply duct 45 . The radiation cooling/heating system 100 can be installed inside a building, a vehicle, or the like. In the following description, it is assumed that the radiation cooling/heating system 100 is applied to a building.

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 cold water or hot water whose temperature is adjusted by a heat source machine (not shown) flows. A tube of the coil 41 is provided with a large number of fins. The coil 41 transmits the heat of the cold water or hot water to the temperature-controlled air A by allowing the temperature-controlled air A to pass through a number of fins and exchanging heat between the cold water or hot water and the temperature-controlled air A. is configured as The fan 42 pumps the temperature-controlled air A whose temperature is controlled by the coil 41 toward the radiation 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, if there is a risk that the moisture contained in the temperature-controlled air A supplied from the air conditioner 40 will condense, the air conditioner 40 will adjust the humidity of the temperature-controlled air A to prevent condensation. It is preferred to have a configuration.

The air supply duct 45 guides the temperature-controlled air A whose temperature has been adjusted by the air conditioner 40 to the distribution duct 51 . The supply air duct 45 has one end connected to the discharge side of the air conditioner 40 and the other end connected to the introduction portion 56 of the distribution duct 51 . The supply air duct 45 may be a square duct or a spiral duct, and the size thereof may be appropriately determined in consideration of the design air volume of the temperature-controlled air A. The supply air duct 45 is typically wrapped with heat insulating material. However, if the outer surface of the air intake duct does not fall below the dew point temperature of the surrounding environment, it is advisable to omit the installation of the heat insulating material. A suction duct 46 is connected to the suction side of the air conditioner 40 in this embodiment. The intake duct 46 is a duct for taking in the air that becomes the temperature-controlled air A in the air conditioner 40 into the air conditioner 40 . The suction duct 46 may have an end opposite to the end connected to the air conditioner 40 opening into the cooling/heating target space so as to take in the air in the cooling/heating target space, or the outer wall so as to take in the outside air. It may be connected to a louver (not shown) provided in the . When the other end of the suction duct 46 opens to the space to be cooled and heated, an outside air duct may be provided separately so that outside air can be taken into the air conditioner 40 at a predetermined rate. The suction duct 46 may also be a square duct or a spiral duct, and its size can be determined as appropriate.

　Continued to refer to FIGS. 1 to 10, the operation of the radiation cooling/heating system 100 will be described. The operation of the radiant panel 10 will be described as part of the operation of the radiant cooling and heating system 100. FIG. When operating the radiation cooling/heating system 100, first, the air conditioner 40 is started. Air is then introduced into the air conditioner 40 via 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 to become temperature-controlled air A whose temperature is adjusted. The temperature-controlled 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 temperature-controlled air A discharged from the air conditioner 40 reaches the distribution duct 51 after flowing through the air supply duct 45 . The temperature-controlled air A that has reached the distribution duct 51 (see FIG. 9) flows into the distribution duct 51 from the introduction portion 56 . The temperature-controlled air A that has flowed into the distribution duct 51 from the introduction portion 56 collides with the baffle plate 54 and flows along the baffle plate 54 toward the communication ports 55 at both ends in the longitudinal direction. The temperature-controlled air A that has reached the communication port 55 enters the body portion 52 on the opposite side through the communication port 55 and flows out of the distribution duct 51 through the supply port 53 . The temperature-controlled air A flowing out from the supply port 53 flows from the inlet 18 formed in the opposing plate 16 (see FIG. 6B) into each gas flow channel R inside the flow channel forming member 19 (see FIG. 4A ) see).

The temperature-controlled air A that has flowed into each gas channel R flows through the gas channel R toward the outlet 29 . The direction in which the temperature-controlled air A in the gas flow path R goes from the inlet 18 to the outlet 29 is called "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 passes through the surface plate 12, the first side plate 13, and the second side plate 17 through the portions in contact with the surface plate 12, the first side plate 13, and the second Cold heat or hot heat possessed by the temperature-controlled air A is transferred to the second side plate 17 . Also, when the temperature-controlled air A flows in the gas flow path R in the flow direction, it meets the restricting member 22 (see FIG. 5(C)). The temperature-controlled air A reaching the restricting member 22 is blocked by the blocking plate 23 and mainly gathers in the gap 26 . At this time, since the closing plate 23 is inclined so as to be positioned downstream in the flow direction as it approaches the gap 26 side, 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 is reduced. The flow velocity of the temperature-controlled air A when passing through the gap 26 is approximately 3 m/s to 5 m/s. When the temperature-controlled air A passes through the gap 26 at a speed of approximately 3 m/s to 5 m/s, the velocity boundary layer existing along the surface plate 12 is removed, and the cold or hot heat possessed by the temperature-controlled air A is removed. It is efficiently transmitted to the surface plate 12 . In addition, since the gap 26 has a certain length (about 35 mm to 40 mm in the present embodiment) 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. can be done. On the downstream side of the parallel plate 24, the temperature-controlled air A that has passed through the gap 26 may flow around the back side of the parallel plate 24 to generate a vortex. However, in the present embodiment, since the passage 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, the temperature-controlled air A spreads over a wide range of the surface plate 12. It is possible to efficiently transmit cold heat or heat that the air A possesses. The surface plate 12 is cooled during cooling and warmed during heating by heat transfer from the temperature-controlled air A and heat transfer from the first side plate 13 and the second side plate 17 .

The surface plate 12 cooled or warmed by heat transfer from the temperature-controlled air A radiates cold heat or heat from the surface to cool or heat the space facing the surface plate 12 to be cooled or heated. During cooling, the heat of objects existing in the space to be cooled is absorbed by the surface plate 12 to provide a feeling of coolness. is expressed. In the radiant cooling/heating system 100, the heat medium that cools or heats the surface plate 12 is the temperature-controlled air A. Therefore, compared to the case where cold water or hot water is used as the heat medium, the occurrence of dew condensation can be suppressed, and water leakage can be prevented. can be avoided. If radiant cooling is performed using cold water as the heat medium, it is conceivable to set the temperature of the cold water to 23°C or higher (higher than the dew point) in order to prevent condensation on the radiation surface. In this case, it becomes difficult to quickly follow when there is a change in the load. In this respect, the radiant cooling/heating system 100 according to the present embodiment is excellent in followability when the load fluctuates because the heat medium is the temperature-controlled air A.

The temperature-controlled air A that flows through each gas flow path R and reaches the outlet 29 exits the flow path forming member 19 via 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 direction, and flows out of the conversion member 31 through the outlet 37 . The temperature-controlled air A that has flowed out of the conversion member 31 flows along the outside 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) and the gas flow path R. It flows in the direction opposite to the direction in which the flowing temperature-controlled air A flows. The temperature-controlled air A flowing outside the surface plate 12 along the surface plate 12 flows along each composite plate 39 when reaching the guide plate 38 . As a result, the temperature-controlled air A flows in a direction away from the surface plate 12, is diffused in the space to be cooled and heated, and contributes to cooling or heating of the space to be cooled and heated by convection. In this embodiment, the temperature-controlled air A diffused into the space to be cooled/heated flows out of the space to be cooled/heated via a door louver (not shown), a vent (not shown), or the like, and diffuses into the surrounding environment. In the present embodiment, since the temperature-controlled air A used for cooling and heating is not directly returned to the air conditioner 40, the air diffused into the surrounding environment is separately introduced into the air conditioner 40 via the suction duct 46, Henceforth, the above-mentioned action is repeated.

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

In the above description, the radiant panel 10 is installed on the ceiling of the building. may be The radiation panel 10 can also be installed on the ceiling and/or the floor and/or the wall of a space where people stay, including vehicles (buses, passenger cars, trains, etc.) as well as buildings.

In the above description, the first lid 11 and the second lid 15 are each formed in a folded structure by bending a sheet of thin plate member. good. For example, the first lid 11 may be formed by welding separate first side plates 13 and small projections 14 to a surface plate 12 made of a single rectangular plate member. The second lid 15 is also the same. However, by forming the first lid 11 and/or the second lid 15 into a folded structure, the load resistance can be improved, which is particularly useful when the radiation panel 10 is installed on the floor. Further, by forming the first lid 11 and/or the second lid 15 into a folded structure, the passage forming member 19 can be given a role of a structure particularly when the radiation panel 10 is installed in a vehicle.

In the above description, the adjacent gas flow paths R share the first side plate 13 and the second side plate 17 as partition plates. However, each gas channel R may have its own partition plate and the partition plates may be brought into close contact with each other so that a plurality of gas channels R may be arranged.

In the above description, the radiation panel 10 is provided with a direction changing member (converting member 31) and an airflow guide plate (guide plate 38), but both or one of them may be omitted depending on the situation. For example, when installing the radiation panel 10 on the floor, both the direction changing member and the airflow guide plate may be omitted.

In the above description, the distribution duct 51 is provided with the introduction portion 56 in the central portion in the longitudinal direction, and the baffle plate 54 is provided in the main body portion 52. The presence or absence can be changed as appropriate.

In the above description, the temperature-controlled air A that has passed through the radiation panel 10 is supplied to the space to be cooled and heated and is used for convection air conditioning. Alternatively, the air conditioner 40 may be configured to collect the air without cleaning and return it to the air conditioner 40 . In this case, the conversion member 31 and the guide plate 38 may be omitted.

All documents, including publications, patent applications, and patents, cited in this specification are individually identified and incorporated by reference, and the entire contents of each are set forth herein. To the same extent, incorporated herein by reference.

The use of nouns and similar denoting terms used in connection with the description of the present invention (especially in connection with the claims below) unless otherwise indicated herein or clearly contradicted by context. , to cover both the singular and the plural. The phrases “comprising,” “having,” “including,” and “including” are to be construed as open-ended terms (ie meaning “including but not limited to”) unless stated otherwise. Recitation of numerical ranges herein, unless otherwise indicated herein, is intended merely to serve as a shorthand method for referring individually to each value falling within the range. , and each value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. Any examples or exemplary language (e.g., "such as") used herein are intended merely to better illustrate the invention and constitute limitations on the scope of the invention, unless otherwise claimed. isn't it. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.

Preferred embodiments of the present invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments will become apparent to those of ordinary skill in the art upon reading the above description. The inventors anticipate that skilled artisans will apply such variations as appropriate, and anticipate that the invention will be practiced otherwise than as specifically described herein. . Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.

Claims (7)

a flow path forming member having a surface plate that emits or injects thermal radiation energy, and an enclosing member that forms a gas flow path through which gas flows in cooperation with the surface plate;
a limiting member provided in the gas flow path with a gap between it and the surface plate to limit 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,
radiation panel. The restricting member includes a blocking plate that extends in a direction intersecting the surface plate and closes the cross-sectional area of the gas flow path while leaving the gap, and a blocking plate extending along the surface plate in a direction in which the gas flows from the blocking plate. parallel plates extending through
A radiation panel according to claim 1 . The closure plate is formed with a passage hole through which a predetermined flow rate of the gas can pass,
3. The radiation panel according to claim 2. The gas flow path is formed elongated in a direction in which the gas flows,
The surrounding member has a side plate connected to the surface plate and extending 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 or adjoining the side plates.
The radiation panel according to any one of claims 1 to 3. An outlet is provided at which the gas flows out from the gas channel, and the direction of the flow of the gas is changed so that the gas that has flowed out from the outlet flows along the surface plate outside the gas channel. comprising a redirecting member having a contour;
The radiation panel according to any one of claims 1 to 4. An air flow guide provided on the surface plate outside the gas flow channel and having a contour that changes the flow direction of the gas flowing along the surface plate outside the gas flow channel in a direction away from the surface plate. with a board,
A radiation panel according to claim 5 . a radiation panel according to any one of claims 1 to 6;
a temperature control device that controls the temperature of the gas;
a distribution duct that guides the gas whose temperature has been adjusted by the temperature control device to the gas flow path;
Radiant heating and cooling system.

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