JP2015040663A - Panel for radiation air conditioning, and radiation air conditioning unit including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a panel for radiation air conditioning capable of achieving both of air conditioning performance and sound absorbing performance, and also having incombustibility.SOLUTION: A panel for radiation air conditioning has a base plate 2, a pipe 3, and a frame member 4. The pipe 3 is held by the base plate 2 through a heat sink 5. As the base plate 2 is composed of a sintered metal plate or a metallic non-woven fabric plate having a porosity of about 30-60%, air freely passes therethrough thus sound absorbing performance is improved, but as a groove width of an air passage inside is thin of about 10 μm, the pipe 3 does not drip through the base plate 2 even when it is melted in the case of fire. Accordingly, the panel has a condition as a non-combustible ceiling board. The base plate 2 has a heat transfer surface on the entire lower surface so that air conditioning performance can be also improved.

Description

  The present invention relates to a panel disposed on a ceiling of a building for radiation air conditioning and a radiation air conditioning unit using the panel.

  Radiant air-conditioning that exchanges heat via a metal panel has the advantage that it does not generate noise because it does not have a fan, and it has the advantage that it is comfortable because cold air and warm-up do not hit the skin because there is no wind. I am doing.

  One of the features of radiant air conditioning is that the radiant panel is arranged in a wide area on the ceiling, in other words, the radiant panel also serves as a ceiling plate. Therefore, the radiation panel is required to have the same function as the ceiling panel. Non-flammability and sound absorption are listed as functions required for the ceiling panel.

  Since the radiant panel is mostly made of metal, the radiant panel itself is nonflammable. On the other hand, conventionally, sound absorbing properties have been dealt with by making many small holes in the radiation panel. That is, the radiation panel is made of punching metal, so that the radiation panel has sound absorption. However, if the pipe through which air-conditioning fluid (generally water) passes is made of resin, in the event of a fire, the flame will enter the back of the radiation panel (back of the ceiling) through a small hole and the pipe will burn, resulting in non-combustibility. There was a problem that could not be secured.

  In view of this, it has been considered that a large number of small holes are formed in the radiant panel to ensure sound absorption while preventing flame from propagating to the pipe to ensure nonflammability. As an example, Patent Document 1 describes that a non-combustible sheet or plate is interposed between a pipe and a radiant panel, and Patent Document 2 holds and holds a pipe on the radiant panel with a non-combustible sheet. On the other hand, it is described that the periphery of the small hole in the radiant panel is formed into a cylindrical part, and the small hole provided in the non-combustible sheet is fitted into the cylindrical part of the radiant panel. Patent Document 3 discloses that in a configuration in which a heat equalizing plate is fixed to a radiant panel and a pipe is attached to the radiant panel, an incombustible sheet is attached to a portion of the radiant panel excluding the heat equalizing plate.

Japanese Patent Laid-Open No. 10-227495 JP 2000-121086 A JP 2008-267618 A

  Although it can be said that each of these patent documents can ensure sound absorption and non-combustibility, a non-combustible sheet and a non-combustible plate are required, so that the structure becomes complicated and it takes time to manage and assemble members. In addition, since many small holes open downward, it is difficult to say that the design is excellent. And in order to improve sound absorption, it is necessary to increase the number of small holes, but in this case, the radiation area will be reduced and the air conditioning performance will be lowered, and the fatal problem that the air noise performance and the air conditioning performance will conflict There is.

  The present invention has been made to improve the current situation.

  The present invention includes a radiation panel and a radiation air conditioning unit, and the radiation panel is specified in claims 1 to 3. Of these, the invention of claim 1 constitutes a superordinate concept, and the radiation panel of claim 1 has a complicated and complicated space inside, and the air escapes vertically but the molten resin does not pass through. The substrate is disposed such that the lower surface forms a ceiling surface, and the upper surface is provided with a pipe attachment portion through which air-conditioning fluid flows.

  In this case, the porosity (porosity) is the ratio of the space to the volume of the substrate, and the porosity is preferably about 30 to 60%. In addition, a minute space (gap) opened on the front and back faces enters the inside of the substrate like a maze, but the width of the space may be about 10 μm.

  In the invention of claim 2, the substrate is made of a sintered metal obtained by compacting metal powder or a metal nonwoven fabric obtained by compacting metal fibers. According to a third aspect of the present invention, in the first or second aspect, the attachment portion of the pipe is formed of a metal heat sink, and the heat sink is integrated with the holding portion into which the pipe is fitted and the holding portion. And a blade portion that is continuous and bonded to the substrate.

  According to a fourth aspect of the present invention, in the third aspect, the substrate is a sintered metal obtained by pressing and compacting metal powder in a mold, and the blade portion of the heat sink is overlaid on the metal powder layer when the substrate is manufactured. Alternatively, it is integrally bonded to the substrate by an insert molding method in which pressure is applied while being embedded in the metal powder layer.

  The radiant air-conditioning unit is specified in claim 5, and the radiant air-conditioning unit has the substrate described in any of claims 1 to 4 and a pipe disposed on the upper surface thereof, and the substrate is a flat surface. On the other hand, the pipe has a plurality of straight portions extending long in parallel with two parallel sides of the substrate, and a crosspiece member in a posture crossing them is provided at a direct portion of the pipe. Overlapping from the top, two standing edges of the four sides of the substrate parallel to the straight line portion of the pipe are provided with standing portions in which the ends of the crosspiece members are held so as not to be displaced.

  Since the board | substrate of this invention is used for heat exchange as the whole radiation | emission surface, the board | substrate of this invention can ensure high air conditioning performance. Moreover, since the air passes above and below (front and back) the substrate, the sound absorption is also excellent. Therefore, both air conditioning performance and sound absorption can be achieved simultaneously.

  In addition, since the space inside the board is intertwined like a maze, the flame does not reach the pipe even if it hits the lower surface of the board, so it is a radiation air conditioning unit that incorporates a resin pipe. However, the pipe does not burn and exhibits high incombustibility. Also, even if a resin pipe melts with heat, it does not sag through the substrate, so the melted pipe does not burn. High nonflammability is also exhibited in this aspect.

  Furthermore, since the substrate is porous, it has a Japanese paper-like appearance, so that it does not give the person a sense of incongruity but gives a calm impression to the room. Therefore, the commercial value is high from the viewpoint of design. Since the surface has an infinite number of fine holes, there is an advantage that even if the surface is damaged by hitting an object or the like, it is buried in the unevenness of the surface and the damage is not noticeable.

  The substrate can be manufactured by, for example, pressure bonding using an extremely fine metal wire as a material, but when a sintered metal or a metal nonwoven fabric is used as in claim 2, the substrate has a high strength with an appropriate porosity. There is an advantage that can be manufactured with high accuracy.

  The pipe can be directly stacked on the upper surface of the substrate. However, when a heat sink made of a metal plate is used as in claim 3, the pipe holding function is excellent, and heat dissipation and heat absorption are also excellent. .

  If the structure of Claim 4 is employ | adopted, since the process of joining a heat sink to a board | substrate becomes unnecessary, the effort of a manufacturing process can be reduced by that much. Further, since the heat sink is integrated with the substrate, it can be said that the bonding strength is also excellent. Furthermore, since the adhesion between the heat sink and the substrate is high, it can contribute to the improvement of the air conditioning efficiency.

It is the partially broken perspective view which looked up at the ceiling where the radiation air-conditioning unit of the present invention was arranged from the bottom. (A) is a top view of the radiation air-conditioning unit which concerns on 1st Embodiment, (B) is the BB view front view of (A). 3A is a sectional view taken along line IIIA-IIIA in FIG. 2A, and FIG. 3B is a sectional view taken along line IIIB-IIIB in FIG. It is sectional drawing which shows 2nd Embodiment. (A) is sectional drawing which shows 3rd Embodiment, (B) is the fragmentary top view of the blade | wing part in the heat sink which concerns on 3rd Embodiment. It is sectional drawing which shows 4th Embodiment. It is sectional drawing which shows 5th Embodiment. (A) is sectional drawing which shows 6th Embodiment, (B) is sectional drawing which shows 7th Embodiment.

  Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 schematically shows a state in which the radiation air conditioning unit 1 of the present invention is arranged. The radiation air conditioning unit 1 has a rectangular shape in plan view (bottom view), and a large number of groups of the radiation air conditioning units 1 are arranged vertically and horizontally with a space between them and the ceiling slab S.

  In the drawing, the radiant air-conditioning unit 1 near the wall is applied to the wall W of the building, but is actually supported by the trunk edge. In FIG. 1, the entire ceiling surface is displayed as being composed of a group of radiant air-conditioning units 1. However, it is sufficient to arrange the radiant air-conditioning unit 1 only in an area necessary for air conditioning. It can be said that in many cases, only a few percent of the ceiling surface is composed of a group of radiant air-conditioning units 1, for example, by arranging the air-conditioning units 1 in rows. In that case, the illuminating device (lamp) is often arranged between adjacent rows of the radiation air conditioning units 1.

  If the entire ceiling surface is not composed of the group of radiant air conditioning units 1, the ceiling surface is the same as the radiant air conditioning unit 1 and the ceiling plate having the same external appearance. If it comprises, it is suitable because design unification is taken.

(1) 1st Embodiment Next, the specific structure of the radiation air-conditioning unit 1 is demonstrated based on drawing after FIG. First, a first embodiment shown in FIGS. The radiation air conditioning unit 1 includes a rectangular (square) substrate 2 in plan view, a resin pipe 3 disposed on the upper surface of the substrate 2, and a crosspiece member (frame) 4 that holds the pipe 3 against the substrate 2. Yes.

  The substrate 2 is a sintered metal plate made of light metal powder such as aluminum powder, which is put into a mold and integrated by heating and pressing, and has a thickness of 2 to 3 mm. The porosity of the substrate 2 is 30 to 60%, and air freely passes through the front and back (up and down). For example, when the person puts his mouth on one side and breathes in, the porosity is such that the breath can escape to the other side without much resistance.

  However, the substrate 2 has a porosity that does not drop down even when the resin pipe 3 is melted. That is, the melted resin has a superior surface tension and remains on the upper surface of the substrate 2, and does not pass through the substrate 2 due to capillary action. Even if a fire occurs indoors, the flame does not pass through the substrate 2. When the interval between the internal spaces (the groove width of the path such as a maze or a cave) is about 10 μm, the molten resin does not pass through.

  The pipe 3 is bent zigzag in a plan view and has six straight portions 3 a that are long in the direction of the long side of the substrate 2. One end 3b and the other end 3c of the pipe 3 are located at one short side portion of the substrate 2, and the adjacent pipes 3 are connected in series by a joint pipe.

  The straight portion 3 a of the pipe 3 is held on the substrate 2 so as not to be detached via a heat sink (pipe holder) 5 joined to the substrate 2. The heat sink 5 is an extruded product of light metal such as aluminum, and has a holding part 5a into which the pipe 3 is fitted, and a blade part 5b that extends on both sides of the holding part 5a. And the lower surface of the blade portion 5b is joined to the substrate 2 so as not to be detached by adhesion or brazing.

  The gap between the opening edges of the holding part 5a is narrowed to a dimension slightly smaller than the outer diameter of the pipe 3, and therefore, the straight part 3a of the pipe 3 is fitted to the holding part 5a so as not to be detached. . The fitting is performed by forced fitting against elasticity. The width of the blade portion 5b is approximately the same as the outer diameter of the pipe 3, but the width of the blade portion 5b can be arbitrarily set. The heat sink 5 extends over the entire length of the substrate 2. The heat sink 5 can also be manufactured by sheet metal processing using a metal plate such as an aluminum plate. In this case, the holding part 5a has a two-layer structure.

  The crosspiece member 4 uses a channel material having a U-shaped downward opening and extends long in a direction crossing the straight portion 3 a of the pipe 3 (or in the short side direction of the substrate 2). In the side plate 4a constituting the crosspiece member 4, a recess 6 that fits into the straight portion 3a of the pipe 3 from above is cut out.

  At both ends of the crosspiece member 4, end plates 7 projecting downward are provided so as to close the inside of the crosspiece member 4, while upward standing pieces 7 are bent or molded at the long sides of the substrate 2. The end plate 7 of the crosspiece member 4 is overlapped on the inner surface of the upright piece 7, and both are fastened with screws (dish screws) 9. Although the screw 9 uses a drill screw or a tapping screw, a bolt type screw may be used and screwed into a nut fixed to the inner surface of the end plate 7.

  Suspension support nuts 10 are welded to the inner bottom surface near the both ends of the crosspiece member 4, and suspension bolts 11 suspended from a beam of a building or the like are screwed into the suspension support nuts 10. It is also possible to place the substrate 2 on a cross-girder-like ceiling frame without using the suspension bolt 11.

  In the above configuration, since the lower surface of the substrate 2 has an appearance like Japanese paper, a calm atmosphere without a sense of incongruity can be formed. Moreover, since the board | substrate 2 is porous, it is excellent in sound absorption, and can improve indoor quietness. Moreover, since heat radiation and heat absorption are performed in the entire area of the lower surface of the substrate 2, high air conditioning efficiency can be exhibited while being excellent in sound absorption.

  Further, since the lower surface of the substrate 2 is in the same state as innumerable irregularities, the surface area is much larger than that of a simple plate material. Therefore, the heat rays emitted from the air-conditioned space are received. The air conditioning efficiency is expected to be improved from this aspect as well. Furthermore, as described above, the flame does not pass through the substrate 2, and even if the pipe 3 is melted by heat, the molten resin does not spill out through the substrate 2, so that nonflammability can be ensured. Therefore, it has the conditions as a nonflammable ceiling board.

(2). Other Embodiments Next, other embodiments shown in FIG. 4 and the following will be described. In 2nd Embodiment shown in FIG. 4, the base end part of the blade | wing part 5b and the holding part 5a among the heat sinks 5 is embedded and integrated in the board | substrate 2 by insert molding. When the heat sink 5 is insert-molded in this way, since the bonding strength is high, the width of the blade portion 5b may be short. As a result, the area of the heat sink 5 can be reduced to further improve the sound absorption.

  The third embodiment shown in FIG. 5 is a modification of the second embodiment, and when the heat sink 5 is integrated with the substrate 2 by insert molding, the through holes 13 jump to the blade portions 5b of the heat sink 5 along the longitudinal direction. As a result, the bonding strength of the heat sink 5 to the substrate 2 is further increased.

  In the fourth embodiment shown in FIG. 6, the heat sink 5 is integrated with the substrate 2 by insert molding. In this embodiment, the portion of the blade portion 5b of the heat sink 5 in the substrate 2 is configured to be thick, The blade portion 5 b of the heat sink 5 is pressed by the upward protruding portion 14 of the substrate 2. Also in this case, it is possible to increase the bonding strength by opening the through hole 13 in the blade portion 5b as shown in FIG.

  In the fifth embodiment shown in FIG. 7, the heat sink 5 is not used, and the pipe receiving portion 15 into which the lower half of the pipe 3 is fitted is formed integrally with the substrate 2. As indicated by the alternate long and short dash line, ribs 16 for promoting heat transfer may be provided on both sides of the pipe receiving portion 15 (the ribs 16 are formed so as to jump in the longitudinal direction of the straight portion 3a of the pipe 3).

  As can be understood from FIG. 7, the heat sink 5 is not necessarily required in the present invention. The pipe 3 may be simply placed on the flat upper surface of the substrate 2 without providing the pipe receiving portion 15 as shown in FIG.

  FIG. 8 shows a fixing means for the crosspiece member 4 and the substrate 2. Among them, in the sixth embodiment shown in (A), a metal plate edge member 17 having an L-shaped cross section is integrally provided at the end portion of the substrate 2 by insert molding, and a diagonally downward engaging claw 17a is bent on the edge member 17. On the other hand, the engaging groove 18 in which the engaging claw 17a of the edge member 17 is fitted is formed at both ends of the side plate 4a of the crosspiece member 4. The engagement claw 17a and the engagement groove 18 are fitted together by pressing the crosspiece member 4 downward.

  The seventh embodiment shown in FIG. 8B is similar to the sixth embodiment, but in this embodiment, the long side portion of the substrate 2 is held by the edge member 17. Therefore, the edge member 17 is formed with a fitting groove 19 into which the long side portion of the substrate 2 is fitted.

  The present invention can be embodied in various ways other than the above-described embodiment. For example, the substrate can be made of a metal nonwoven fabric made of metal fibers, a metal fiber compressed body, a metal foam having open cells, or the like. In addition, the substrate can be formed of a plurality of layers of different materials or the same material, and a nonflammable heat insulating material may be disposed on the upper surface of the substrate 2. You may paint on many sides of a substrate.

  The present invention can be actually embodied in a radiation air conditioning panel. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Radiation air conditioning unit 2 Board | substrate which comprises the panel for radiation air conditioning 3 Pipe 3a Straight part of pipe 3 4 Crosspiece member 5 Heat sink 5a Holding part 5b Blade | wing part 7 End plate of crosspiece member 8 Standing piece of board | substrate

Claims (5)

There is a complicated porous space inside, and it has a metal porous substrate with a porosity that allows air to escape vertically but does not allow molten resin to pass through, and the lower surface of the substrate forms a ceiling surface. And the upper surface is provided with a pipe attachment portion through which air-conditioning fluid flows,
Radiant air conditioning panel. The substrate is made of a sintered non-woven metal obtained by compacting metal powder or a metal nonwoven fabric obtained by compacting metal fibers.
The panel for radiant air conditioning according to claim 1. The pipe mounting part is composed of a metal heat sink, and the heat sink includes a holding part into which the pipe is fitted, and a blade part integrally connected to the holding part and joined to the board. Have
The panel for radiation air conditioning according to claim 1 or 2. The substrate is made of sintered metal by pressing and compacting metal powder in a mold, and the blade portion of the heat sink is pressed in a state of being superimposed on the metal powder layer or embedded in the metal powder layer when the substrate is manufactured. It is integrally joined to the substrate by a molding method,
The panel for radiant air conditioning according to claim 3. The substrate according to any one of claims 1 to 4 and a pipe disposed on an upper surface thereof, wherein the substrate is square in a plan view, while the pipe has two parallel sides of the substrate. It has a plurality of straight portions extending long in parallel, and a crosspiece member in a posture that crosses the straight portions of the pipe overlaps from above, and is parallel to the straight portion of the pipe among the four sides of the substrate. Two side edges are provided with upright portions in which the ends of the crosspieces are held so as not to be displaced,
Radiant air conditioning unit.

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