JP2023125549A - Radiation body, concrete structure, radiation unit, and air conditioning system - Google Patents

Abstract

To provide a radiation body efficiently transferring heat held by a heat medium, a concrete structure, a radiation unit, and an air conditioning system.SOLUTION: A radiation body 10 includes: an outer cylinder 12; an inner cylinder 15 disposed inside the outer cylinder 12; and a nozzle 20 for guiding a heat medium A flowing inside the inner cylinder 15 into the outer cylinder 12 at the outside of the inner cylinder 15. An axis of the inner cylinder 15 is extended in a direction same as an axis of the outer cylinder 12. In the nozzle 20, a discharge port for discharging the heat medium A is formed along an inner wall of the outer cylinder 12 in a direction crossing the axis of the inner cylinder 15. A concrete structure includes the radiation body 10 and concrete covering its circumference. A radiation unit includes the radiation body 10 and a reflection plate disposed near the same. An air conditioning system includes the concrete structure or the radiation unit, and a temperature adjustment device for adjusting a temperature of the heat medium A.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a radiator, a concrete structure, a radiant unit, and a heating and cooling system, and particularly relates to a radiator, a concrete structure, a radiant unit, and a heating and cooling system with improved heat transfer efficiency from a heat medium.

In recent years, radiant heating and cooling systems that perform heating and cooling using radiant heat have been increasingly adopted as a heating and cooling system that achieves both energy savings and comfort. A radiant heating and cooling system is a system that cools the parts (ceilings, floors, walls, etc.) facing the space to be cooled or heated during cooling and warms them during heating, and cools or heats the space using radiant heat from the cooled or heated parts. . As a component used in a radiant heating and cooling system, multiple 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 warm heat from the air (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2011-252375

In heating and cooling by radiation, if more of the cold or warm heat held by the air can be transferred to the member that radiates cold or warm heat, then heating and cooling can be performed more effectively and it will also contribute to energy savings.

In view of the above-mentioned problems, the present disclosure relates to providing a radiator, a concrete structure, a radiant unit, and a heating and cooling system that can efficiently transmit cold or warm heat held by a heat medium.

A radiator according to a first aspect of the present disclosure includes an outer cylinder, an inner cylinder arranged in a space inside the outer cylinder, through which a gaseous heat medium flows, and the heat medium flows inside the inner cylinder. a nozzle that guides the inside of the outer cylinder outside the inner cylinder, and the inner cylinder is arranged such that the axis of the inner cylinder extends in the same direction as the axis of the outer cylinder. , the nozzle is formed with a discharge port for discharging the heat medium in a direction intersecting with an extending direction of the axis of the inner cylinder and along an inner wall of the outer cylinder.

With this configuration, when the heat medium discharged from the discharge port flows along the inner wall of the outer cylinder, the cold or warm heat held by the heat medium is efficiently transferred to the outer cylinder, and the outer cylinder transfers cold or hot heat. be able to utter.

Further, in a radiator according to a second aspect of the present disclosure, in the radiator according to the first aspect of the present disclosure, a plurality of the nozzles are provided at intervals in a direction in which the axis of the inner cylinder extends. ing.

With this configuration, it is possible to increase the portion of the outer cylinder that comes into contact with the heat medium discharged from the nozzle, and it is possible to increase the area over which cold or hot heat held by the heat medium is transmitted to the outer cylinder.

Further, in the radiator according to the second aspect of the present disclosure, a first nozzle among the plurality of nozzles is arranged to direct the heat in a first predetermined direction. The discharge port is formed in a direction in which the medium is discharged, and the discharge port in the second nozzle is formed in a direction in which the heat medium is discharged in a second predetermined direction different from the first predetermined direction. has been done.

With this configuration, it is possible to suppress unevenness in cold or hot heat transferred from the heat medium to the outer cylinder.

Further, a radiator according to a fourth aspect of the present disclosure is a radiator according to any one of the first to third aspects of the present disclosure, including a band that wraps around the outer surface of the inner cylinder; A support having a claw protruding from the band and hooking onto the outer cylinder is provided.

With this configuration, the inner cylinder can be positioned with respect to the outer cylinder with a simple configuration.

Further, a concrete structure according to a fifth aspect of the present disclosure includes a radiator according to any one of the first to fourth aspects of the present disclosure, and concrete covering the radiator. , is provided.

With this configuration, the cold or hot heat emitted by the outer cylinder is transmitted to the concrete, and the cold or hot heat can be radiated from the surface of the concrete.

Further, a radiation unit according to a sixth aspect of the present disclosure includes a radiator according to any one of the first to fourth aspects of the present disclosure, and a reflection unit disposed near the radiator. A reflecting plate is provided, which is a plate and reflects heat radiated from the radiator in a predetermined direction.

With this configuration, the cold or hot heat radiated from the outer cylinder can be radiated in a predetermined direction by the reflective plate.

Further, a heating and cooling system according to a seventh aspect of the present disclosure includes the concrete structure according to the fifth aspect of the present disclosure or the radiant unit according to the sixth aspect of the present disclosure, and A temperature controller that adjusts the temperature of the heat medium.

With this configuration, the temperature-controlled heat medium can be flowed into the inner cylinder, the heat held by the heat medium can be transmitted to the concrete or the reflective plate via the outer cylinder, and the cold or heat from the concrete or the reflective plate can be transferred. The space to be cooled and heated can be heated and cooled by radiation of heat.

According to the present disclosure, when the heat medium discharged from the discharge port flows along the inner wall of the outer cylinder, the cold or warm heat held by the heat medium is efficiently transferred to the outer cylinder, and the outer cylinder transfers the cold or hot heat. be able to utter.

(A) is a perspective view of a radiator according to an embodiment, and (B) is a front sectional view of the radiator. FIG. 2 is a perspective view of a nozzle included in a radiator according to an embodiment. FIG. 2 is an exploded perspective view of a support included in a radiator according to an embodiment. (A) is a perspective view showing a schematic configuration of a heating and cooling system according to an embodiment, (B) is a partial perspective view of the radiator around the connection to the distribution duct, and (C) shows the end portion of the inner cylinder. FIG. (A) is an exploded perspective view showing a schematic configuration of a heating and cooling system according to a modification of one embodiment, and (B) is a perspective view showing a schematic configuration of a heating and cooling system according to a modification of one embodiment.

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

First, a radiator 10 according to an embodiment will be described with reference to FIGS. 1(A) and 1(B). FIG. 1(A) is a perspective view of the radiator 10, with a portion cut away to show the internal structure. FIG. 1(B) is a front sectional view of the radiator 10. The radiator 10 allows temperature-adjusted air (hereinafter referred to as "temperature-adjusted air A") as a gaseous heat medium to flow inside, and cold or hot heat held by the temperature-adjusted air A is transferred to cool or heat the radiator 10. It radiates cold or hot heat from its outer surface. Here, when cooling the outer surface of the radiator 10 and radiating cold heat, the outer surface of the radiator 10, which has a lower temperature than the surroundings, absorbs heat from the surroundings. I will express it. The radiator 10 includes an outer cylinder 12, an inner cylinder 15, and a nozzle 20.

The outer cylinder 12 is a member that forms the outer surface of the radiator 10. Further, the outer cylinder 12 is also a member that accommodates the inner cylinder 15 and the plurality of nozzles 20. The outer cylinder 12 has a basic shape of a cylinder. Further, the outer cylinder 12 can also allow temperature-controlled air A to flow inside. In this embodiment, the outer cylinder 12 has a cross section perpendicular to the cylindrical axis of the basic shape (an imaginary line passing through the centroid of the shape in a plane perpendicular to the longitudinal direction of the cylindrical shape and extending in the longitudinal direction). It is shaped like a competition track. In other words, the shape of the outer cylinder 12 in a cross section perpendicular to the axis is divided into two equal parts by dividing a circle by an imaginary straight line, and two parallel straight lines separated from each other in a direction perpendicular to the imaginary bisector. It is formed in a connected shape. For example, the outer cylinder 12 may have a distance between two straight lines of 100 mm to 250 mm, or 150 mm to 200 mm, but this distance can be changed as appropriate depending on the purpose. Further, the outer cylinder 12 may have a maximum distance of 200 mm to 350 mm, or 250 mm to 300 mm, for example, between mutually separated semicircular parts, but this distance may be determined as appropriate depending on the application. Can be changed. The outer tube 12, which has a cylindrical basic shape, is open at both end surfaces. The outer cylinder 12 is typically formed of a steel plate, but may be formed of a metal other than a steel plate or a resin.

The inner cylinder 15 is a member that allows the temperature-controlled air A to flow therein, and forms a flow path for the temperature-controlled air A. The inner cylinder 15 is a member through which the temperature-controlled air A flowing into the radiator 10 first flows. The inner cylinder 15 is a cylindrical member, and both ends thereof are open surfaces. Although a spiral duct is typically used for the inner cylinder 15, a square duct may also be used. That is, the shape of the cross section of the inner tube 15 perpendicular to the cylindrical axis is typically circular, but may be rectangular or other polygonal, or may be elliptical. The inner cylinder 15 is typically formed of a steel plate, but may be formed of a metal other than a steel plate or a resin. When a spiral duct is used, the inner cylinder 15 may have a diameter of 80 mm to 230 mm, or 120 mm to 170 mm, but the diameter can be changed as appropriate depending on the purpose. In the inner cylinder 15, one duct may be integrally formed, or a plurality of ducts may be connected in the axial direction to form one duct. The inner cylinder 15 is typically arranged inside the outer cylinder 12 at a position where its axis coincides with the axis of the outer cylinder 12. In the inner cylinder 15, a plurality of mounting holes into which the nozzles 20 are mounted are formed on the cylindrical side surface along the longitudinal direction.

The nozzle 20 is a member that guides the temperature-controlled air A flowing inside the inner cylinder 15 to a space inside the outer cylinder 12 (hereinafter referred to as "discharge space 18") outside the inner cylinder 15. The nozzle 20 is typically attached to the side surface of the inner cylinder 15 at the part where the distance between the outer cylinder 12 and the inner cylinder 15 is the shortest. There are two parts where the distance between the outer cylinder 12, which has a cross section shaped like an athletics track, and the inner cylinder 15, which has a circular cross section, is the shortest. , a plurality of nozzles 20 are installed at intervals along the longitudinal direction. Each nozzle 20 is mounted on the inner cylinder 15 in such a manner that it is fitted into a mounting hole formed in the inner cylinder 15. Conversely, mounting holes are formed in the side surface of the inner cylinder 15 at positions suitable for mounting each nozzle 20. The distance between the reference positions of adjacent nozzles 20 in the longitudinal direction (the direction in which the axes of the outer cylinder 12 and the inner cylinder 15 extend) can be, for example, 200 mm to 600 mm, or 300 mm to 400 mm to 500 mm. However, the interval between the adjacent nozzles 20 can be changed as appropriate depending on the size and installation location of the radiator 10, the amount of heat load to be processed, and the like.

An example of the configuration of the nozzle 20 will be described with reference to FIG. 2 as well. FIG. 2 is a perspective view showing a schematic configuration of the nozzle 20. As shown in FIG. The nozzle 20 has an insert body 21, an exposed body 25, and a flange 29. The insert body 21 is a part that is inserted into the inside of the inner tube 15. The exposed body 25 is a portion located in the discharge space 18. The insert body 21 is generally formed in the shape of a rectangular parallelepiped, and one set of the three opposing faces of the rectangular parallelepiped is an open face. One of the opposing opening surfaces serves as an inlet 22. The inlet 22 is an opening that takes the temperature-controlled air A flowing inside the inner cylinder 15 into the nozzle 20 . The insertion body 21 has an opening surface facing the inflow port 22 connected to the exposed body 25 . Hereinafter, regarding the description of the nozzle 20, the direction in which the insert body 21 and the exposed body 25 are continuous will be referred to as the "height direction H." Further, the direction perpendicular to the height direction H on the surface of the pair of faces having a smaller area among the two pairs of opposing surfaces other than the generally rectangular parallelepiped opening surface constituting the insert body 21 is referred to as a "depth direction D"; The direction perpendicular to the height direction H and the depth direction D will be referred to as the "width direction W." The insert body 21 has a notch 23 formed in a surface extending in the height direction H and the depth direction D. The notch 23 is formed from the inlet 22 to the opposing opening surface. The notch 23 is widest at a position adjacent to the inlet 22 , becomes narrower as it approaches the exposed body 23 , and has no width at a position adjacent to the exposed body 23 . The cut 23 is typically formed at a position that bisects the surface on which the cut 23 is formed. The insert body 21 is inserted into the inner cylinder 15 from the outside of the inner cylinder 15 with the notch 23 closed, and then the notch 23 opens inside the inner cylinder 15. By forming the notch 23 in this manner, it is possible to prevent the nozzle 20 attached to the inner cylinder 15 from falling off from the inner cylinder 15.

The exposed body 25 is formed into a generally rectangular parallelepiped shape so that the insert body 21 extends from the opening surface with the same size. The exposed body 25 has a pair of surfaces extending in the depth direction D and the width direction W, the surface connecting to the insert body 21 is entirely open, and a pair of surfaces extending in the height direction H and the width direction W. A discharge port 28 is formed on one of the surfaces. The discharge port 28 is an opening that discharges the temperature-controlled air A that has entered the nozzle 20 from the inside of the inner cylinder 15 via the inflow port 22 from the nozzle 20 into the discharge space 18 . The surface of the exposed body 25 in which the discharge port 28 is formed is not a surface that is an extension of the surface of the insert body 21 in which the notch 23 is formed, but is located between the pair of surfaces in which the notch 23 is formed. A surface that is an extension of one of a pair of surfaces. The size of the discharge port 28 can be determined as appropriate by taking into account the flow rate and flow velocity of the temperature-controlled air A to be discharged, and even if the discharge port 28 is not formed on the entire surface of the exposed body 25 on which the discharge port 28 is formed. good. The discharge port 28 is typically formed in a rectangular shape, but may have a shape other than a rectangle, such as a circle, an ellipse, or a polygon. Further, although the discharge port 28 is formed of one opening in the example shown in FIG. 2, it may be formed of a plurality of openings. In either case, it is preferable that the discharge port 28 is formed at a position farther from the insert body 21 than at a position closer to the insert body 21. By forming the outlet 28 at such a position, the outlet 28 can be placed near the outer cylinder 12 when the nozzle 20 is attached to the inner cylinder 15.

A curved portion 26 is formed in the exposed body 25 at a portion where a surface facing the surface on which the discharge port 28 is formed and a surface facing the opening surface connected to the insert body 21 intersect. The curved portion 26 is formed over the entire width direction W. The cross section of the curved portion 26 perpendicular to the width direction W is typically formed into a 1/4 arc, but the curvature can be changed as appropriate. The curved portion 26 is formed to smoothly change the direction of the temperature-controlled air A that has entered the exposed body 25 from the insert body 21 toward the discharge port 28 (so that the pressure loss is as small as possible). . The length of the exposed body 25 in the height direction H is set to be equal to or less than the distance between the outer cylinder 12 and the inner cylinder 15 at the mounting position of the nozzle 20 so that the nozzle 20 can be properly mounted on the inner cylinder 15. It is preferable that the distance be as close as possible to the distance between the outer cylinder 12 and the inner cylinder 15. If the length of the exposed body 25 in the height direction H is close to the distance between the outer cylinder 12 and the inner cylinder 15, the discharge port 28 will be located close to the outer cylinder 12, and the discharge port 28 will be The temperature-controlled air A can easily follow the inner wall of the outer cylinder 12.

The flange 29 is provided at the boundary between the insert body 21 and the exposed body 25. The flange 29 projects outwardly from the side of the boundary between the insert body 21 and the exposed body 25 . The flange 29 is typically formed over the entire circumference of the side surface of the boundary between the insert body 21 and the exposed body 25. The outer periphery of the flange 29 is larger than the outer periphery of the mounting hole formed in the inner cylinder 15. In other words, the flange 29 is formed to a size that can accommodate the mounting hole. By providing the flange 29, when the nozzle 20 is attached to the inner cylinder 15, the flange 29 and the exposed body 25 can be prevented from entering the inner cylinder 15. Note that the flange 29 does not need to be formed over the entire circumference of the side surface of the boundary between the insert body 21 and the exposed body 25. However, for the following reason, it is preferable that the flange 29 be formed over the entire circumference of the side surface of the boundary between the insert body 21 and the exposed body 25. This is because when the mounting hole is made one size larger than the outer circumference of the insert 21 to make it easier to insert the insert 21 into the inner cylinder 15, the mounting hole remains between the insert 21 and the inner cylinder 15. This is to close the mounting hole remaining between the insert body 21 and the inner cylinder 15. The nozzle 20 is typically made of a resin molded product, but may also be formed by processing a metal material such as a galvanized steel plate or a stainless steel plate.

Returning to FIG. 1 again, the description of the configuration of the radiator 10 will be continued. In addition, in the following description, when referring to the configuration of the nozzle 20, reference will be made to FIG. 2 as appropriate. In this embodiment, a plurality of nozzles 20 are installed at intervals in the longitudinal direction of the inner cylinder 15, and the discharge ports 28 of adjacent nozzles 20 face in opposite directions. Specifically, a certain (arbitrary) nozzle 20 is arranged so that its discharge port 28 faces in a first direction, and the adjacent nozzle 20 is arranged so that its discharge port 28 faces in a second direction. The second direction is opposite to the first direction. Even after that, the nozzles 20 whose discharge ports 28 face in the first direction and the nozzles 20 whose discharge ports 28 face in the second direction are alternately arranged. In this embodiment, the first direction and the second direction are directions perpendicular to the axis (longitudinal direction) of the inner cylinder 15. The inner cylinder 15 to which the plurality of nozzles 20 are attached is fixed to the outer cylinder 12 by a support 30. In this embodiment, the support 30 circumferentially surrounds the outer surface of the inner cylinder 15 and has a portion that projects away from the inner cylinder 15 and hangs over the outer cylinder 12.

FIG. 3 shows a schematic configuration of the support 30. FIG. 3 is an exploded perspective view of the support 30. In this embodiment, the supports 30 are configured to be used in pairs. The support 30 has a band 31 and a claw piece 33. The band 31 is a part that wraps around the outer surface of the inner cylinder 15. The band 31 typically has a bent rectangular thin plate-like member. The rectangular thin plate member that forms the base of the band 31 has two pairs of opposing sides, one set of sides is half the length of the outer circumference of the inner cylinder 15, and the other set of sides is half the length of the outer circumference of the inner cylinder 15. The length of the side is shorter than the length of the space between adjacent nozzles 20. The band 31 is formed by a pair of sides of a rectangular thin plate-like member having a length that is half the outer circumference of the inner tube 15 curved at the curvature of the outer diameter of the inner tube 15 .

A claw piece 33 is connected to the non-curved side of the band 31. The claw piece 33 is a small piece that hangs on the outer cylinder 12. In other words, an insertion hole (not shown) into which the claw piece 33 is engaged is formed in the outer cylinder 12 at an appropriate position. The claw pieces 33 extend on an imaginary extension of the diameter of the semicircle of the band 31. The length of the claw piece 33 extending from the band 31 is longer than the distance between the inner tube 15 and the outer tube 12. In the example shown in FIG. 3, the tip of the claw piece 33 (the side opposite to the connecting side with the band 31) is bent, but this shows the state when it is attached to the outer cylinder 12 (however, In FIG. 3, the outer cylinder 12 and the inner cylinder 15 are omitted to facilitate understanding of the structure of the support 30).

In this embodiment, the band 31 has a notch 39 formed next to the claw piece 33 on the non-curved side. The notch 39 is typically formed to have the same size as the claw piece 33 before its tip is bent. The adjacent claw pieces 33 and notches 39 are all provided approximately at the center of the non-curved side of the band 31. Further, the adjacent claw pieces 33 and notches 39 provided on each of the pair of opposing sides are arranged symmetrically with respect to the centroid of the rectangular thin plate-like member that forms the base of the band 31. It is preferable that With this configuration, waste of material can be avoided when cutting out a mold for the support 30 before bending the band 31 from a long thin plate-like raw material. The support 30 is typically formed by processing a metal material such as a galvanized steel plate or a stainless steel plate, but a resin molded product may also be used. With the tips of the claw pieces 33 not bent, the support tool 30 is constructed by sandwiching the outer surface of the inner cylinder 15 between two pieces at each supporting position, and then passing the claw pieces 33 through the insertion holes of the outer cylinder 12. It is used by bending the claw pieces 33 that protrude outside the outer cylinder 12 along the outer surface of the outer cylinder 12.

Next, with reference to FIG. 4(A), a heating and cooling system 100 according to an embodiment will be described. FIG. 4(A) is a perspective view showing a schematic configuration of the heating and cooling system 100. The heating and cooling system 100 is typically installed in a building and performs heating and cooling of spaces within the building. Here, performing air conditioning or heating refers to performing either cooling or heating depending on the situation. The heating and cooling system 100 has the ability to perform both cooling and heating depending on the season.

The air conditioning system 100 includes a concrete structure 50 according to one embodiment. The concrete structure 50 is constructed by arranging a plurality of the above-described radiators 10 in parallel on a virtual plane and covering them with concrete 51. The concrete 51 is integrally molded to cover the entire outer peripheral side surface of the outer cylinder 12 of the plurality of radiators 10, and does not cover both end surfaces of the radiator 10. In addition, in FIG. 4(A), in order to show the internal structure of the concrete 51, a part of the concrete 51 is shown cut away. Furthermore, when referring to the configuration of the radiator 10 in the following description, reference will be made to FIGS. 1(A), 1(B), and FIG. 2 as appropriate. The spacing between the radiators 10 may be determined so that concrete 51 is filled between adjacent radiators 10 to a depth of 30 mm or more, preferably 40 mm or more, more preferably 50 mm or more. In the direction perpendicular to the direction in which each radiator 10 is arranged (upward and downward when each radiator 10 is arranged horizontally), the cover of the concrete 51 is approximately 30 mm to 40 mm to 50 mm. It is better to make it . The concrete 51 may be poured at the site (building construction site), or the concrete structure 50 manufactured as precast concrete at a factory may be transported to the site. A concrete structure 50 in which a plurality of radiators 10 are embedded in concrete 51 can function as a void slab when used for a floor (ceiling for a downstairs space). In other words, the concrete structure 50 can be viewed as having the inner tube 15 and the nozzle 20 provided within the void of a void slab, or the outer tube 12 can be viewed as a void formwork. Therefore, when the concrete structure 50 is used for a floor, it enjoys the advantages of a void slab, such as being able to create a highly rigid slab with high sound insulation, and being able to create a space without small beams. can do.

The heating and cooling system 100 includes an air conditioner 61 in addition to the concrete structure 50 described above. The air conditioner 61 is a device that adjusts the temperature of the temperature-conditioned air A, and corresponds to a temperature controller. The air conditioner 61 may be placed in a space under the attic or in another space. The air conditioner 61 includes a coil (not shown) and a fan (not shown). The coil cools or heats the temperature-controlled air A introduced into the air conditioner 61. The coil has a tube through which cold water or hot water whose temperature is controlled by a heat source device (not shown) flows inside. The tube of the coil is provided with a number of fins. The coil transmits the heat of the cold water or hot water to the temperature-controlled air A by passing the temperature-controlled air A between a large number of fins and exchanging heat between the cold water or hot water and the temperature-controlled air A. It is composed of The fan forces the temperature-controlled air A whose temperature is controlled by a coil toward the radiator 10 of the concrete structure 50. Note that the air conditioner 61 only needs to be able to adjust the temperature of the temperature-conditioned air A, and does not need to have a configuration for adjusting the humidity of the temperature-conditioned air A. However, if there is a risk that the moisture contained in the temperature-conditioned air A supplied from the air conditioner 61 may condense, the air conditioner 61 may adjust the humidity of the temperature-conditioned air A to prevent condensation from occurring. It is preferable to have a configuration.

In this embodiment, the air conditioning system 100 further includes a distribution duct 63, a collection duct 65, and an outgoing duct 68 for conveying temperature-conditioned air A between the air conditioner 61 and the concrete structure 50. ing. The distribution duct 63 is a member that distributes the temperature-controlled air A to the inner cylinder 15 of each radiator 10 within the concrete structure 50. At the end of the radiator 10 connected to the distribution duct 63, a short pipe 41 and an outer cylinder cap 43 are provided, as shown in FIG. 4(B). The short pipe 41 is a pipe that connects the inner cylinder 15 of the radiator 10 and the distribution duct 63. The outer cylinder cap 43 is a member that closes the end of the outer cylinder 12 excluding the inside of the inner cylinder 15 (the portion of the discharge space 18 that appears on the end surface of the outer cylinder 12). The outer cylinder cap 43 has an opening through which the short tube 41 passes. In other words, the short tube 41 passes through the outer cylinder cap 43 and is connected to the end of the inner cylinder 15. The distribution duct 63 is formed into an elongated cylindrical shape in the direction (width direction) in which the plurality of short pipes 41 (inner cylinder 15) are lined up. The cross section of the distribution duct 63 perpendicular to the longitudinal direction is typically rectangular, but may be circular, elliptical, or polygonal. The distribution duct 63 has a size in the longitudinal direction (the size of the cylindrical side surface) that includes the entire end surface of each of the plurality of short pipes 41, and the short pipe 41 is attached to the cylindrical side surface. The end faces of each radiator 10 are connected via. The height of the side surface of the distribution duct 63 to which each radiator 10 is connected is preferably the same as the thickness of the concrete structure 50. The distribution duct 63 and the radiator 10 are in communication via the short pipe 41, so that the temperature-controlled air A can flow into the radiator 10 from the distribution duct 63. The distribution duct 63 has an introduction port 64 for introducing the temperature-controlled air A at one end of the elongated cylindrical shape. In the present embodiment, the distribution duct 63 does not have any openings other than the communication port with the radiator 10 and the introduction port 64, and all of the temperature-controlled air A introduced from the introduction port 64 is distributed to each radiator. It is now possible to lead to 10.

The collection duct 65 is a member that collects the temperature-controlled air A flowing through each radiator 10. An inner cylinder cap 45 is provided at the end of the radiator 10 on the side connected to the collection duct 65, as shown in FIG. 4(C). The inner cylinder cap 45 is a member that closes the end surface of the inner cylinder 15. At the end of the radiator 10 connected to the collection duct 65, the end face of the inner cylinder 15 is closed with the inner cylinder cap 45, but the end face of the outer cylinder 12 is not closed, and the end face of the inner cylinder 15 is closed with the inner cylinder cap 45. The end of the outer cylinder 12 excluding the inside of the outer cylinder 15 (the discharge space 18 portion exposed on the end surface of the outer cylinder 12) is open. Collection duct 65 typically has the same size and shape as distribution duct 63. However, as long as it can fulfill the function of collecting temperature-controlled air A, it may have a different shape and size from the distribution duct 63. The collection duct 65 has a longitudinal size (the size of the cylindrical side surface) that is large enough to encompass the entire end surface of each of the plurality of radiators 10, and each radiator is attached to the cylindrical side surface. 10 end faces are connected. The height of the side of the collection duct 65 to which each radiator 10 is connected is preferably the same as the thickness of the concrete structure 50. The collection duct 65 and the discharge space 18 portion appearing on the end surface of the outer cylinder 12 communicate with each other at the connecting portion between the two, and the temperature-controlled air A can flow into the collection duct 65 from the discharge space 18 inside the radiator 10. It is now possible to do so. The collection duct 65 has a reflux port 66 for discharging the temperature-controlled air A at one end of the elongated cylindrical shape. In this embodiment, the return port 66 is provided at the longitudinal end of the collection duct 65 so that the return port 66 of the collection duct 65 is closest to the radiator 10 furthest from the inlet 64 of the distribution duct 63. It is formed. In this embodiment, the reflux port 66 is provided with a louver. In the present embodiment, the collection duct 65 has no openings except for the communication port with the radiator 10 and the return port 66, and all of the temperature-controlled air A flowing out from the radiator 10 into the collection duct 65 is can be guided to the reflux port 66. Note that when the concrete structure 50 is manufactured as precast concrete in a factory, the concrete structure 50 is equipped with a distribution duct 63 (including the short pipe 41 and the outer cylinder cap 43) and/or a collection duct 65 (including the inner cylinder cap). 45) may be attached. Further, the distribution duct 63 (including the short pipe 41 and the outer cylinder cap 43) and/or the collection duct 65 (including the inner cylinder cap 45) may be covered with concrete 51 and molded integrally. In other words, the distribution duct 63 (including the short pipe 41 and the outer cylinder cap 43) and/or the collection duct 65 (including the inner cylinder cap 45) may be included in the components of the concrete structure 50.

The concrete structure 50 to which the distribution duct 63 and the collection duct 65 are attached (hereinafter, this may be referred to as an "aggregate") is formed into a rectangular plate shape as a whole. The inlet 64 of the distribution duct 63 and the return opening 66 of the collection duct 65 are configured to be located diagonally across the generally rectangular assembly. The discharge side of the air conditioner 61 and the inlet 64 of the distribution duct 63 are connected by an outgoing duct 68. In this embodiment, a duct is not connected to the reflux port 66 of the collection duct 65, and the duct is open to the space in which the reflux port 66 is exposed. Accordingly, air around the air conditioner 61 is taken into the air conditioner 61.

The operation of the heating and cooling system 100 will be explained with continued reference to FIGS. 4(A) to 4(C). The actions of the radiator 10 and the concrete structure 50 will be described as part of the action of the heating and cooling system 100. In the following description, when referring to the configuration of the radiator 10, reference will be made to FIGS. 1(A), 1(B), and FIG. 2 as appropriate. When operating the heating and cooling system 100, first, the air conditioner 61 is started. Then, air around the air conditioner 61 is introduced into the air conditioner 61. When the air introduced into the air conditioner 61 passes through the coil, it is cooled during cooling and warmed during heating, becoming temperature-controlled air A. The temperature-controlled air A generated by passing through the coil is discharged from the air conditioner 61 by a fan. Temperature-conditioned air A discharged from the air conditioner 61 flows through the outgoing duct 68 and then flows into the distribution duct 63. The temperature-controlled air A that has flowed into the distribution duct 63 flows toward the end opposite to the side to which the outbound duct 68 is connected. The temperature-controlled air A flowing through the distribution duct 63 flows into the radiator 10 via the short tube 41 every time it encounters the short tube 41 connected to the radiator 10 arranged in the longitudinal direction.

The temperature-controlled air A flowing into each radiator 10 from the distribution duct 63 via the short pipe 41 flows into the inner cylinder 15 to which the short pipe 41 is connected. The temperature-controlled air A flowing into the inner cylinder 15 flows inside the inner cylinder 15 toward the end on the side where the inner cylinder cap 45 is provided. Every time the temperature-controlled air A flowing inside the inner cylinder 15 encounters a nozzle 20 arranged along the longitudinal direction of the inner cylinder 15, it flows into the inside of the nozzle 20 from the inlet 22. Note that since the end of the inner cylinder 15 is closed with the inner cylinder cap 45, all of the temperature-controlled air A that has flowed into the inner cylinder 15 flows into one of the nozzles 20. The temperature-controlled air A that has flowed into the nozzle 20 from the inlet 22 of each nozzle 20 passes through the insert body 21 and reaches the inside of the exposed body 25, and the curved portion 26 is bent inside the exposed body 25. The direction of the flow is changed along the direction and flows out from the discharge port 28 into the discharge space 18 . The temperature-controlled air A flowing out from the discharge port 28 into the discharge space 18 flows along the inner wall of the outer cylinder 12 because the discharge port 28 is arranged close to the outer cylinder 12 . Furthermore, in this embodiment, since the discharge port 28 is oriented in a direction perpendicular to the longitudinal direction of the inner cylinder 15, the temperature-controlled air A flows mainly in the circumferential direction of the outer cylinder 12 and flows through the distribution duct as a whole. 63 side to the collection duct 65 side. When the temperature-controlled air A flowing into the discharge space 18 flows along the inner wall of the outer cylinder 12, the cold or warm heat held by the temperature-controlled air A is transferred to the outer cylinder 12. At this time, if the size of the discharge port 28 is formed so that the flow velocity of the temperature-controlled air A flowing out from the discharge port 28 is approximately 3 m/s to 5 m/s, the temperature-controlled air A is present near the inner wall of the outer cylinder 12. The resulting still air (velocity boundary layer) will be removed or reduced in thickness, and the heat transfer rate will increase. As the heat transfer coefficient increases, more of the cold or hot heat held by the temperature-controlled air A is transferred to the outer cylinder 12. Furthermore, in this embodiment, a plurality of nozzles 20 are provided at predetermined intervals along the longitudinal direction, and the discharge ports 28 of adjacent nozzles 20 alternately face in opposite directions, so that the entire outer cylinder 12 is Cold or hot heat can be transferred to In this way, in the radiator 10, as the temperature-controlled air A flows, the cold or warm heat held by the temperature-controlled air A is effectively transmitted to the outer cylinder 12. The cold or hot heat transferred to the outer cylinder 12 is transferred to the concrete 51 surrounding the outer cylinder 12, thereby lowering or increasing the temperature of the concrete 51.

The concrete 51, which is cooled during cooling and warmed during heating by the transfer of cold or warm heat from the outer cylinder 12, radiates cold or warm heat from its surface to cool or heat the space facing the concrete 51. . Note that during cooling, the concrete 51 absorbs the heat of objects in the space to be cooled, giving a sense of coolness; however, in this specification, for convenience, it is expressed as cold heat being radiated from the concrete 51. are doing. In the air-conditioning system 100, since the temperature-controlled air A is used as the heat medium for cooling or heating the concrete 51, it is possible to suppress the occurrence of dew condensation and avoid water leakage, compared to when cold water or hot water is used as the heat medium. be able to. If radiant cooling is performed using cold water as the heat medium, it is possible to set the temperature of the cold water to 23°C or higher (a temperature higher than the dew point) to prevent condensation on the radiant surface. In this case, it becomes difficult to quickly follow changes in load. In this regard, since the heating and cooling system 100 according to the present embodiment uses the temperature-controlled air A as the heat medium, it has excellent followability during load fluctuations.

In each radiator 10 , temperature-controlled air A is discharged from the discharge port 28 of each nozzle 20 and moves along the inner wall of the outer cylinder 12 in the discharge space 18 toward the collection duct 65 . Once there, it flows from the discharge space 18 into the collection duct 65 . The temperature-controlled air A flowing into the collection duct 65 from each radiator 10 flows through the collection duct 65 toward the recirculation port 66 . At this time, the end of the collection duct 65 provided with the return port 66 is located diagonally to the end of the distribution duct 63 to which the outgoing duct 68 is connected, as described above. Therefore, the distances traveled by the temperature-controlled air A flowing through each radiator 10 from the inlet 64 to the return port 66 are approximately equal (reverse rethan system), and the entire concrete 51 can be evenly cooled or heated. . The temperature-controlled air A that has flowed through the collection duct 65 and reached the return port 66 is diffused into the space where the return port 66 is exposed (typically, a space where heating and cooling is performed by radiation of cold or warm heat from the concrete 51). Ru. The air diffused from the recirculation port 66 is separately taken into the air conditioner 61 from the air around the air conditioner 61, and thereafter the above-described operation is repeated.

As explained above, according to the radiator 10 according to the present embodiment, the temperature-controlled air A flowing out from the nozzle 20 into the discharge space 18 flows along the inner wall of the outer cylinder 12. Thereby, the cold or hot heat held by the temperature-controlled air A can be efficiently transferred to the outer cylinder 12, and the outer cylinder 12 can emit cold or hot heat. Furthermore, if the temperature-controlled air A flowing out from the discharge port 28 can remove or reduce the thickness of the velocity boundary layer near the inner wall of the outer cylinder 12, more cold or warm heat can be transferred to the outer cylinder 12. can be transmitted. In addition, since a plurality of nozzles 20 are provided at predetermined intervals along the longitudinal direction, and the discharge ports 28 of adjacent nozzles 20 face alternately in opposite directions, cold or hot heat is transmitted to the entire outer cylinder 12. can be done. Furthermore, the concrete structure 50 according to the present embodiment can function as a void slab when used for a floor, and can be a structure that has both the advantages of a radiant plate and a void slab. Moreover, according to the air conditioning system 100 according to the present embodiment, since the concrete structure 50 is provided with the above-described radiator 10, heat radiation is performed from the concrete 51, thereby efficiently cooling or heating the space to be cooled or heated. can do.

Next, a heating and cooling system 200 according to a modification of the embodiment will be described with reference to FIGS. 5(A) and 5(B). 5(A) is an exploded perspective view showing a schematic configuration of the heating and cooling system 200, and FIG. 5(B) is a perspective view showing a schematic configuration of the heating and cooling system 200. The air conditioning system 200 is similar in configuration to the air conditioning system 100 (see FIG. 4(A)), but instead of the concrete structure 50 (see FIG. 4(A)), a radiant unit 70 according to an embodiment is used. The main difference is that The radiation unit 70 is configured by arranging a plurality of the above-mentioned radiators 10 in parallel on a virtual plane and covering them with a reflecting plate 71. That is, the radiation unit 70 has a configuration in which a reflecting plate 71 is provided instead of covering the plurality of radiators 10 with concrete in the concrete structure 50 (see FIG. 4(A)). The reflector plate 71 reflects part of the cold or hot heat radiated from the radiator 10 in a predetermined direction (desired direction), thereby increasing the amount of heat radiated in the predetermined direction.

The reflecting plate 71 is typically formed in a size that can include all of the plurality of radiators 10 arranged on a virtual plane in a plan view. In this embodiment, the reflecting plate 71 has a basic shape of a rectangular thin flat plate, and a pair of opposing sides are curved into a 1/4 arc shape in a cross section perpendicular to the sides. However, the shape of the reflection plate 71 can be determined as appropriate depending on the direction in which the radiant heat from the radiator 10 is desired to be reflected, the amount of heat, and the like. It is preferable that the reflecting plate 71 is configured such that a reflecting surface 72, which is a surface facing the radiator 10 and reflects radiant heat from the radiator 10, has a high emissivity. As a measure to increase the emissivity of the reflective surface 72, for example, coating the entire reflective surface 72 with a water-repellent black paint can be mentioned. On the other hand, it is preferable that the back surface 73 on the back side of the reflective surface 72 be made, for example, of silver color with a metallic luster and low emissivity to suppress radiation from the back surface 73. By providing such a reflecting plate 71, the heat radiation from the radiator 10 can be given directivity. The reflecting plate 71 is provided so as to cover one surface of a rectangular plate when the plurality of radiators 10 arranged on a virtual plane are regarded as a rectangular plate as a whole.

In addition to the above-described radiant unit 70, the heating and cooling system 200 includes an air conditioner 61, a distribution duct 63 (including the short pipe 41 and the outer cylinder cap 43), similar to the heating and cooling system 100 (see FIG. 4(A)), The collection duct 65 (including the inner cylinder cap 45) is provided. Note that in FIG. 5(A), illustration of the area around the air conditioner 61 is omitted. The manner in which the distribution duct 63 and the collection duct 65 are connected to each radiator 10 of the radiant unit 70 is similar to that of the heating and cooling system 100 (see FIG. 4(A)). Further, the point that the air conditioner 61 and the inlet 64 of the distribution duct 63 are connected through the outgoing duct 68 is similar to the heating and cooling system 100 (see FIG. 4(A)). However, in the air-conditioning system 200, the return port 66 of the collection duct 65 is not opened to the space where the return port 66 is exposed through the louver, but the return duct 69 is used to connect the return port 66 and the air conditioner 61. The side is connected. In the heating and cooling system 200, both the radiation unit 70 and the air conditioner 61 are typically installed on the ceiling of a space to be heated and cooled. Therefore, the radiation unit 70 and the air conditioner 61 are arranged close to each other, and the outgoing duct 68 and the return duct 69 can be relatively short. The radiation unit 70 is arranged so that the reflection plate 71 is located further away from the radiator 10 with respect to the space to be heated and cooled. Therefore, the reflective surface 72 of the reflective plate 71 faces the space to be heated and cooled. The configuration of the heating and cooling system 200 other than the above is the same as that of the heating and cooling system 100 (see FIG. 4(A)).

The operation of the heating and cooling system 200 configured as described above will be explained. When the air conditioning system 200 is operated, when the air conditioner 61 is started, temperature-conditioned air A is generated in the air conditioner 61, and the generated temperature-conditioned air A flows into each radiator 10 via the outgoing duct 68 and the distribution duct 63. What is done is similar to the heating and cooling system 100 (see FIG. 4(A)). Furthermore, the temperature-controlled air A that has flowed into each radiator 10 may transfer its cold or warm heat to the outer cylinder 12 before reaching the collection duct 65 in the heating and cooling system 100 (see FIG. 4(A)). ).

In the air-conditioning system 200, the outer cylinder 12, which has been cooled or warmed by the transfer of cold or warm heat from the temperature-controlled air A, radiates cold or warm heat from the surface of the outer cylinder 12 to cool or heat the air-conditioned space facing the outer cylinder 12. Provide cooling or heating. At this time, the heat radiated from the surface of the outer cylinder 12 facing opposite to the space to be cooled and heated is reflected by the reflective surface 72 of the reflector plate 71 and radiated to the space to be cooled and heated. Therefore, most of the heat radiated from the entire side surface of the outer cylinder 12 is directed toward the space to be heated and cooled, and the space to be cooled and heated can be efficiently heated and cooled. Note that during cooling, the heat of objects present in the space to be cooled is absorbed by the outer cylinder 12, giving a cool feeling. However, in this specification, for convenience, cold heat is radiated from the outer cylinder 12. It is expressed as. Furthermore, the air conditioning system 200 can also suppress the occurrence of dew condensation, can avoid water leakage, and has excellent followability during load fluctuations.

The temperature-controlled air A that has finished flowing through each radiator 10 flows into the collection duct 65 and flows through the collection duct 65 toward the recirculation port 66, similar to the heating and cooling system 100 (see FIG. 4(A)). . Thereafter, in the heating and cooling system 200, the temperature-conditioned air A that has reached the return port 66 flows through the return duct 69 and is introduced into the air conditioner 61. The temperature-conditioned air A introduced into the air conditioner 61 is temperature-controlled again and then discharged from the air conditioner 61, and thereafter the above-described operation is repeated. According to the heating and cooling system 200 that operates in this manner, most of the cold or hot heat radiated from the radiator 10 (outer cylinder 12) is directed toward the space to be heated and cooled with the help of the reflector plate 71. Efficient radiant heating and cooling can be performed for the space.

In the above description, the shape of the cross section perpendicular to the axis of the outer cylinder 12 is shaped like a track and field track, but it may be oval or circular. When the cross section perpendicular to the axis of the outer cylinder 12 has a circular shape, the nozzle 20 may be installed at any position on the circumference of the inner cylinder 15. For example, the nozzles 20 arranged at predetermined intervals in the longitudinal direction of the inner cylinder 15 are arranged so as to be shifted by a predetermined angle (for example, 60°, 90°, 120°, etc.) when viewed in a cross section perpendicular to the axis of the inner cylinder 15. It may also be a thing.

In the above description, the direction of the discharge port 28 was assumed to be perpendicular to the longitudinal direction of the inner cylinder 15. It may be inclined at a predetermined angle (for example, 15°, 30°, 45°, 60°, 75°, etc.). Further, the first direction and the second direction, which are the directions of the discharge ports 28 of the adjacent nozzles 20, are opposite directions (the angle between the vector in the first direction and the vector in the second direction is 180°). I suppose there is. However, the angle between the first direction and the second direction may be 150°, 120°, 90°, 60°, 30°, or the like.

In the above description, the case where the concrete structure 50 is used for the floor (for the downstairs space, the ceiling) has been mentioned, but it may also be used for the wall. Furthermore, in the above description, the radiation unit 70 is installed on the ceiling of the space to be cooled and heated, but it may be installed on the wall.

In the above description, in the heating and cooling system 100 (see FIG. 4(A)), it is assumed that the return port 66 of the collection duct 65 is open to the space where the return port 66 is exposed through the louver. However, in the heating and cooling system 100 (see FIG. 4(A)), the return port 66 and the air conditioner 61 may be connected by the return duct 69 as in the heating and cooling system 200 (see FIG. 5(B)). On the other hand, in the heating and cooling system 200 (see FIG. 5(B)), the return port 66 of the collection duct 65 and the air conditioner 61 are connected through a return duct 69. However, in the air-conditioning system 200 (see FIG. 5(B)), the return duct 69 is not provided as in the air-conditioning system 100 (see FIG. 4(A)), and the return port 66 of the collection duct 65 is connected through the louver. It may be open to a space where the reflux port 66 is exposed.

10 Radiator 12 Outer cylinder 15 Inner cylinder 18 Discharge space 20 Nozzle 28 Discharge port 30 Support 31 Band 33 Claw piece 50 Concrete structure 51 Concrete 61 Air conditioner 70 Radiation unit 71 Reflector A Temperature-controlled air

Claims (7)

outer cylinder and
an inner cylinder arranged in a space inside the outer cylinder, through which a gaseous heat medium flows;
a nozzle that guides the heat medium flowing inside the inner cylinder to a space inside the outer cylinder outside the inner cylinder,
The inner cylinder is arranged such that the axis of the inner cylinder extends in the same direction as the axis of the outer cylinder,
The nozzle is formed with a discharge port that discharges the heat medium in a direction intersecting with the direction in which the axis of the inner cylinder extends and along the inner wall of the outer cylinder.
radiant. A plurality of the nozzles are provided at intervals in a direction in which the axis of the inner cylinder extends.
The radiator according to claim 1. Among the plurality of nozzles, the first nozzle has the discharge port formed in a direction that discharges the heat medium in the first predetermined direction, and the second nozzle has the discharge port formed in a direction that discharges the heat medium in the first predetermined direction. the discharge port is formed in a direction in which the heat medium is discharged in a second different predetermined direction;
The radiator according to claim 2. A support having a band that wraps around the outer surface of the inner cylinder, and a claw that protrudes from the band and hangs on the outer cylinder.
The radiator according to any one of claims 1 to 3. The radiator according to any one of claims 1 to 4,
Concrete covering the radiator;
concrete structure. The radiator according to any one of claims 1 to 4,
a reflector plate disposed near the radiator, the reflector plate reflecting heat radiated from the radiator in a predetermined direction;
radiation unit. The concrete structure according to claim 5 or the radiant unit according to claim 6,
a temperature controller that adjusts the temperature of the heat medium flowing into the inner cylinder;
Heating and cooling system.